Radioligands for targeting cell surface receptors and uses thereof
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2026-04-08
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Figure CN2024096796_05122024_PF_FP_ABST
Abstract
Description
RADIOLIGANDS FOR TARGETING CELL SURFACE RECEPTORS AND USES THEREOFRELATED APPLICATIONSThe present application claims the benefit of priority of application No. PCT / CN2023 / 097449 filed on May 31, 2023, the contents of which are incorporated herein by reference in their entirety.FIELDThe present application relates generally to the field of radioligands that target cell surface receptors. In particular, it relates to compounds comprising a target binding group, such as a peptide, for example, a glucose-dependent insulinotropic peptide (e.g gastric inhibitory peptide, GIP) analogue, a glucagon-like peptide-1 (GLP-1) analogue or a B7-H3 binding peptide, a potency enhancing group, and an effector group, as well as compositions thereof. It also relates to methods of using the compounds and compositions for targeting and / or killing target cells.BACKGROUNDCancer is a disease in which some of the body’s cells grow uncontrollably and spread to other parts of the body. In comparison to normal cells, cancer cells may overexpress specific receptors on the cell membrane (Sgouros G et al., 2020) . For example, glucagon-like peptide 1 (GLP-1) receptor is highly overexpressed in nearly 100%insulinoma tumors (M et al., 2012) , and gastric inhibitory polypeptide (GIP) receptor is highly overexpressed in most neuroendocrine tumours (Regazzo D. et al., 2020) . B7 Homolog 3 (B7-H3) , also known as CD276, is another transmembrane receptor and immune checkpoint protein that's highly expressed in malignant cells.Such overexpression of receptors has facilitated targeted cancer treatments, where the drug is often constructed as a conjugate or a construct or a complex or a hybrid consisting of a cell-killing moiety and a vector for delivering the payload. Most notable examples include antibody-drug conjugates, peptide-drug conjugates, cell-based therapy CAR-T and others. The therapeutic payloads can be cytotoxic small molecules, proteins, immunostimulants, radionuclides and others. Examples of approved drugs in this class include Adcetris (brentuximab vedotin) , Kadcyla (Trastuzumab emtansine) , Lutathera (lutetium (177Lu) oxodotreotide) , Kymriah (Tisagenlecleucel) etc.A radioligand typically contains a targeting moiety that seeks overexpressed receptors of interest and directs the radioisotope toward the targeted site. In the case of radiometal-based radioligand therapeutics, a chelator group is connected to a targeting moiety via a linker. Once the chelator group is complexed with a radionuclide (radiolabeling) , the final radioligand complex is formed. The radioligand delivers a radioactive payload to the targeted cell, followed by the on-site emission of alpha, beta, or gamma particles, leading to damage, or the breakdown of DNA strands and eventually killing the cancer cell. Similarly, when a diagnostic radionuclide is used, a radioligand diagnostic agent is produced.One objective of optimizing a radioligand is to maximize tumor uptake and minimize off-target accumulation in normal organs. When a radioligand binds to the targeted receptor on the cancer cell surface, the resulting receptor-radioligand complex is often internalized, and the radioisotope is concentrated inside the cancer cell. In order to achieve an acceptable therapeutic window, a sufficient amount of the injected radioisotope dose must accumulate in the targeting cell. In addition, the accumulation of the radioisotope in the non-target normal tissue must be reasonably low.Both small and large molecules have been used as targeting vectors for radioligands, while each resulting in distinct in vivo biodistribution profiles of the radionuclide. Peptide and small molecule-based radioligands, often clear rapidly from systemic circulation, mostly excreted through kidney filtration. Such short half-lives, in some cases, do offer high tumor to normal organ contrast of radioisotope uptake. However, the short blood residence time is often detrimental to tumor uptake. In addition, a considerable amount of peptide scaffolds and small molecule-based radioligand tend to accumulate in the kidney that leads to poor tumor to kidney ratio of radionuclide uptake. On the other side, antibody-based radioligands are distinguished by significantly longer blood circulation half-life and slower kidney clearance, which translates into higher tumor uptake and relatively lower kidney uptake. Despite that, the prolonged blood exposure unavoidably results in high uptake in normal organs including bone marrow, spleen, and liver etc.Consequently, there is a need for improved radioligands that can deliver a high percentage of dosed radioisotope to the targeted cancer cell, while simultaneously maintaining or ideally reducing uptake by normal organs such as kidney, blood, and bone marrow.To circumvent the short circulating half-life problem of peptide-based compounds, the attachment of long polyethylene glycol (PEG) and the incorporation of a serum albumin binding moiety, including 4- (p-Iodophenyl) butyric acid (or methyl analogue) , Evans blue motif and ibuprofen, have been employed (S et al., 2011; Wang Z et al., 2018; Choy CJ et al., 2017; Kuo HT et al., 2018; Deberle LM et al., 2020; Kramer V et al., 2021) . The former extends its plasma half-life through the large hydrodynamic size of PEG while the latter achieves the same by engaging serum albumin protein, which results in the slowdown of the renal clearance of the radioligand. Such modifications have produced mixed results, in most cases, the resulted higher tumor uptake is compromised by higher uptake in other organs including kidney.In the case of Mab-based radioligands, cleavable constructs were briefly explored to reduce the accumulation of radioisotope in the liver and other normal organs (Arano Y et al., 1996) . This was done by introducing a metabolizable bond between Mab and radioisotope complex. However, only marginal improvement was achieved presumably due to the slow internalization kinetics of the covalently modified Mab that diminished the benefit of having a metabolizable linkage.Overall, there is still a lack of optimized radioligands that can concurrently achieve high tumor uptake and low normal organ accumulation. Such radioisotope biodistribution profile is expected to result in significantly improved efficacy and safety profiles and increase the therapeutic index.SUMMARYNew radioligands that target cell surface receptors, for example, gastric inhibitory peptide receptors (GIP-R) , glucagon-like peptide-1 receptors (GLP-1R) and B7 Homolog 3 (B7-H3) are described herein. These compounds are designed to optimize tumor cell uptake, in vivo systemic clearance and other key radioligand properties.In one aspect, provided herein is a compound comprising a structure of Formula I,wherein:Z is a target binding group, wherein the target binding group is a peptide;F and F' are independently selected from A or E;each A is independentlyA1——LA;;each E is independentlyE1——LE;each LAis independentlyeach LE is independentlyeach of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is independently selected from the group consisting of a direct bond, a non-cleavable linker and a cleavable linker;each of TA, TE and T is independently a branching group that is at least trivalent;each of A1 and A2 is independently a potency enhancing group;each of E1 and E2 is independently an effector group;a is any integer selected from 0-10, and preferably 0 or 1;b is any integer selected from 0-10, and preferably 0, 1 or 2;c is any integer selected from 0-10, and preferably 0, 1 or 2;d is any integer selected from 0-10, and preferably 0 or 1; ande is any integer selected from 0-10, and preferably 0 or 1;provided that:(i) when b and c are both 0, then a is at least 1, and one of F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is at least 1, and one or both of F and F' is A, or(iii) when c is 0, then a is at least 1, and one or both of F and F' is E.In some embodiments, a is 0, and the compound of Formula I is a compound of Formula I-i,wherein:each of Z, A and E is as defined herein,b is any integer selected from 1-10, and preferably 1 or 2, andc is any integer selected from 1-10, and preferably 1 or 2.In some embodiments, a is 0, b and c are both 1 and d and e are both 0, and the compound of Formula I (i) is a compound of Formula I (i-a) ,wherein Z, A1, LA1, E1 and LE1 are as defined herein.In some embodiments, a is 1, b, c, d and e are all 0, F is A, F’ is E, A isA1——LA, E isE1——LE, LA is LA1 and LE is LE1 and the compound of Formula I is a compound of Formula I (ii) ,wherein Z, T, A1, E1, LA1, LE1 and LZ are as defined herein.In some embodiments, a is 1, b and c are both 0, F is A, F’ is E, A isA1——LA; E isE1——LE, and the compound of Formula I is a compound of Formula I (iii) ,whereinZ, TA, TE, T, LA1, LA2, LA3, LE1, LE2, LE3, LZ, A1, A2, E1 and E2 are as defined herein; andd and e are independently selected from 0 and 1.In some embodiments, d is 1 and e is 0 and the compound of Formula I (iii) is a compound of Formula I (iii-a)wherein Z, A1, A2, E1, LA1, LA2, LA3, LE1, LZ, TA, and T are as defined herein.In some embodiments, a is 1, b is 0, c is 1, d is 0 or 1, e is 0, F and F’a re both A, and A isA1——LA; and the compound of Formula I is a compound of Formula I (iv) ,wherein Z, T, E1, LE and LZ are as defined in claim 10; andeach A1 and each LA are as defined herein and each A1 and each LA are the same ordifferent.In some embodiments, each of A, E and LZ is independently covalently linked to an amino acid residue of Z selected from the group consisting of Lys, ornithine (Orn) , homo-lysine, 2, 3-diaminopropionic acid (Dap) , 2, 4-diaminobutyric acid (Dab) , cysteine, homo-cysteine, glutamine, glutamic acid, asparagine, aspartic acid, 3, 5-bis (aminomethyl) benzoic acid (Bab) , 4-aminomethylphenylalaline (Amp) , 4R-4-aminoproline (Apr) , 4- (2-aminoethoxy) phenylalanine, 4-aminopiperidine-4-carboxylic acid (Apc) , 2- ( (1, 3-diaminopropan-2-yl) oxy) acetic acid (Dpa) , and a D enantiomer thereof. In some embodiments, each of TA, TE and T independently comprises one or more amino acid residues each independently derived from Lys, ornithine (Orn) , homo-lysine, 2, 3-diaminopropionic acid (Dap) , 2, 4-diaminobutyric acid (Dab) , cysteine, homo-cysteine, glutamine, glutamic acid, asparagine, aspartic acid, 3, 5-bis (aminomethyl) benzoic acid (Bab) , 4-aminomethylphenylalaline (Amp) , 4R-4-aminoproline (Apr) , 4- (2-aminoethoxy) phenylalanine, 4-aminopiperidine-4-carboxylic acid (Apc) , 2- ( (1, 3-diaminopropan-2-yl) oxy) acetic acid (Dpa) , or a D enantiomer thereof.In some embodiments, the potency enhanced by A includes but is not limited to improved binding affinity against the tumor antigen that Z specifically binds to, extended in vivo half-life, increased tumor uptake, and / or enhanced in vivo activity.In some embodiments, each of A1 and A2 independently comprises one or more plasma protein binding groups. In some embodiments, the plasma protein is selected from albumin, alpha-1-acid glycoprotein, fetuin, transferrin, IgG, HDL (high-density lipoprotein) or LDL (low-density lipoprotein) . In some embodiments, each of A1 and A2 independently comprises one or more albumin binding groups. In some embodiments, the albumin binding group is selected from the group consisting of unsubstituted or substituted C (O) C1-26alkyleneCOOH, unsubstituted or substituted C (O) C1-26alkenyleneCOOH, unsubstituted or substituted C (O) C1-26alkyl, and unsubstituted or substituted C (O) C1-26alkenyl. In some embodiments, the albumin binding group is selected from unsubstituted or substituted C (O) C6-20alkyleneCOOH, or unsubstituted or substituted C (O) C7-21alkyl. In some embodiments, the albumin binding group is selected from the group consisting of C (O) C7alkyl, C (O) C8alkyl, C (O) C9alkyl, C (O) C10alkyl, C (O) C11alkyl, C (O) C12alkyl, C (O) C13alkyl, C (O) C14alkyl, C (O) C15alkyl, C (O) C16alkyl, C (O) C17alkyl, C (O) C18alkyl, C (O) C19alkyl, C (O) C20alkyl, C (O) C21alkyl, C (O) C6alkyleneCOOH, C (O) C7alkyleneCOOH, C (O) C8alkyleneCOOH, C (O) C9alkyleneCOOH, C (O) C10alkyleneCOOH, C (O) C11alkyleneCOOH, C (O) C12alkyleneCOOH, C (O) C13alkyleneCOOH, C (O) C14alkyleneCOOH, C (O) C15alkyleneCOOH, C (O) C16alkyleneCOOH, C (O) C17alkyleneCOOH, C (O) C18alkyleneCOOH, C (O) C19alkyleneCOOH, and C (O) C20alkyleneCOOH.In some embodiments, each of E1 and E2 is independently selected from a chemotherapeutic agent, a toxin, an immunomodulator, a diagnostic agent, a radionuclide, or a chelating group. In some embodiments, each of E1 and E2 independently comprises a radionuclide selected from the group consisting of11C, 13N, 14C, 15O, 18F, 75Br, 76Br, 77Br, 123I, 124I, 125I, 131I, 35S, 211At, 32P, 33P, 71As, 72As, 74As, 76As, and 77As. In some embodiments, each of E1 and E2 independently comprises a chelating group derived from a chelating agent. In some embodiments, the chelating agent is selected from the group consisting of 1, 4, 7-Triazacyclononane (TACN) , 1, 4, 7-triazacyclononane-triacetic acid (NOTA) , 1, 4, 7-triazacyclononane-N-succinic acid-N', N"-diacetic acid (NOTASA) , 1, 4, 7-triazacyclononane-N-glutamic acid-N', N"-diacetic acid (NODAGA) , 1, 4, 7-triazacyclononane-N, N', N"-tris (methylenephosphonic) acid (NOTP) , 1, 4, 7, 10-tetraazacyclododecane (
[0012] aneN4) (cyclen) , 1, 4, 7, 10-tetraazacyclotridecane (
[0013] aneN4) , 1, 4, 7, 11-tetraazacyclotetradecane (iso-cyclam) , 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid (DOTA) , 2- (1, 4, 7, 10-tetraazacyclododecan-1-yl) acetate (DO1A) , 2, 2' - (1, 4, 7, 10-tetraazacyclododecane-1, 7-diyl) diacetic acid (DO2A) , 2, 2' , 2" - (1 , 4, 7, 10-tetraazacyclododecane-1 , 4, 7-triyl) triacetic acid (DO3A) , 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetra (methanepnosphonic acid) (DOTP) , 1, 4, 7, 10-tetraazacyclododecane-1, 7-di (methanephosphoriic acid) (DO2P) , 1 , 4, 7, 10-tetraazacyclododecane-1, 4, 7-tri (methanephosphonic acid) (DO3P) , 1, 4, 7, 10-tetraazacyclo-decane-1 -glutamic acid-4, 7, 10-triacetic acid (DOTAGA) , 1, 4, 7, 10-tetraazacyclodecane-1 -succinic acid-4, 7, 10-triacetic acid (DOTASA) , 1, 4, 8, 11-tetraazacyclotetradecane (
[0014] aneN4) (cyclam) , 1, 4, 8, 12-tetraazacyclopentadecane (
[0015] aneN4) , 1, 5, 9, 13-tetraazacyclohexadecane (
[0016] aneN4) , 1, 4-ethano-1, 4, 8, 11-tetraazacyclo-tetradecane (et-cyclam) , 1, 4, 8, 11-tetraazacyclotetradecane-1, 4, 8, 1 1-tetraacetic acid (TETA) , 2- (1, 4, 8, 11 -tetraazacyclotetradecane-1-y I) acetic acid (TE1A) , 2, 2' - (1, 4, 8, 11-tetraazacyclotetradecane-1,8-diyl) diacetic acid (TE2A) , 4, 11-bis (carboxy methyl) -1, 4, 8, 11-tetraazabicyclo [6.6.2] -hexadecane (CB-TE2A) , 3, 6, 10, 13, 16, 19-hexaazabicyclo [6.6.6] icosane (Sar) , 1, 4, 7, 10-tetra- (2-carbamoyl-methyl) -cyclododecane (TCMC) , N, N′-bis [ (6-carboxy-2-pyridil) methyl] -4, 13-diaza-18-crown-6 (macropa) , phthalocyanines, porphyrins, PCTA (3, 6, 9, 15-tetraazabicyclo [9.3.1] pentadeca-1 (15) , 11, 13-triene-3, 6, 9-triacetic acid) , DEPA (7- [2- (biscarboxymethylamino) ethyl] -4, 10-biscarboxymethyl-1, 4, 7, 10-tetraazacyclododec-1-yl-acetic acid) , DTPA (1, 1, 4, 7, 7-diethylenetriaminepentaacetic acid) , CHX-DTPA (cyclohexane-1, 2-diamineN, N, N′, N′-tetraacetate) , BATPA (1, 2-bis [2-aminophenoxy] ethane-N, N, N′, N′-tetraacetic acid) , TTHA (triethylenetetramineN, N, N′, N″, N″′, N″′-hexaacetic acid) , HBED (N, N′ -bis [2-hydroxybenzyl] ethylenediamine-N, N′-diacetic acid) , EGTA (ethylene glycol bis [2-aminoethyl ether] -N, N, N′, N′-tetraacetic acid) , EDTMP (ethylenediamine tetra- [methylene phosphonic acid] ) , TRAP (triazacyclononate phosphinic acids) , SHBED (N, N′-bis [2-hydroxy-5-sulfobenzyl] ethylenediaminediacetic acid) , H6Sbbpen (N, N′-bis- [2-hydroxy-5-sulfonylbenzyl] -N, N′-bis [2-methylpyridyl] ethylenediamine) , THP (Tris (3, 4-hydroxypyridinone) , DFO (deferoxamine) , FSC (Fusarinine) , TAFC (triacetylfusarinine C) , FOXE (ferrioxamine E) , 6SS (N, N′-bis [2, 2-dimethyl-2-mercaptoethyl] ethylenediamine-N, N′-diacetic acid) , ECC (ethylenecysteamine cysteine) , ECD (ethyl cysteinate dimer) , NETA ( [2- {4, 7-biscarboxymethyl (1, 4, 7) triazacyclonona-1-yl-ethyl} carbonylmethylamino] acetic acid, THPN (Tetrakis (3-Hydroxy-4-Pyridinone) ) , H2dedpa (1, 2- [ {6- (carboxylato-) pyridin-2-yl} methylamino] -ethane) , H4octapa (N, N′-bis [6-carboxy-2-pyridylmethyl] -ethylenediamine-N, N′-diacetic acid) , H2bispa2 (6, 6′- [ {9-hydroxy-1, 5-bis- (methoxycarbonyl) -2, 4-di (pyridin-2-yl) -3, 7-diazabicyclo [3.3.1] nonane-3, 7-diyl} bis (methylene) ] dipicolinic acid) , DOTMP (1, 4, 7, 10-Tetraazacyclododecane-1, 4, 7, 10-tetrayl-tetrakis (methylphosphonic acid) ) , PEPA (1, 4, 7, 10, 13-pentaazocyclopentadecane pentaacetic acid) , HEHA (1, 4, 7, 10, 13, 16-hexaazocyclooctadecane hexaacetic acid) , H2hox, H2CHXhox, H2octox, H2pyhox, H4neunopa, TETPA, H4pypa, H4py4pa, DTPAm, EGTAm, ampam, Me-3, 2-HOPO, 3, 4, 3- (LI-1, 2-HOPO) , and macrocyclic tetrapthalimide. In some embodiments, the chelating group is derived from DOTA or DOTAGA.In some embodiments, each of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is independently selected from a direct bond, a non-cleavable linker, or a cleavable linker. In some embodiments, the non-cleavable linker comprises one or more groups selected from the group consisting of R1NC1-20alkyleneNR2, R1NC1-20alkenyleneNR2, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R1NC1-20alkyleneC (O) , R1NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNHR2, C (O) C1-20alkenyleneNR2, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , C (O) C1-20alkenyleneC (S) , C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, R1NC1-20alkenyleneC (S) , C (S) C1-20alkyleneNR2 or C (S) C1-20alkenyleneNR2, each of which is independently and optionally interrupted by one or more of S, O, NH, N (C1-6alkyl) , C (O) , C (O) NH, NHC (O) , C (S) NH, NHC (S) , NHC (O) NH, NHC (S) NH, NHC (NH) , NHC (NC1-4alkyl) , C (NH) NH, C (NC1-4alkyl) NH, NC4-10cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, COOH, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR3R4, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR3R4, wherein each R1, R2, R3 and R4 is independently selected from H and C1-4alkyl. In some embodiments, the non-cleavable linker comprises one or more amino acid residues. In some embodiments, the amino acid residue is derived from a naturally occurring amino acid or a non-naturally occurring amino acid. In some embodiments, the non-cleavable linker comprises one of more moieties of - (OCH2CH2) n-, wherein n is an integer of 1-28 In some embodiments, the non-cleavable linker further comprises one or more groups selected from the group consisting of - (C2alkyleneO) 2C1alkyleneC (O) (OEG) , - (C2alkyleneO) C2alkyleneC (O) (PEG1) , - (C2alkyleneO) 3C2alkyleneC (O) (PEG3) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG6) , - (C2alkyleneO) 6C2alkyleneC (O) (PEG8) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG12) . In some embodiments, at least one of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is a cleavable linker. In some embodiments, the cleavable linker comprises one or more cleavable moieties selected from the group consisting of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) , C (O) S, C=NNH, C=NO, NC1-4alkylC (O) O, NHOC (O) NH, NC1-4alkylOC (O) , and an enzymatically cleavable peptide sequence. In some embodiments, the cleavable linker comprises one or more groups selected from the group consisting of R5NC1-20alkyleneNR6, R5NC1-20alkenyleneNR5, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R5NC1-20alkyleneC (O) , R5NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNR6, C (O) C1-20alkenyleneNR6, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , C (O) C1-20alkenyleneC (S) , SC1-20alkyleneS, SC1-20alkenyleneS, SC1-20alkyleneNR6, SC1-20alkenyleneNR6, R5NC1-20alkyleneS, R5NC1-20alkenyleneS, R5NC1-20alkyleneO, R5NC1-20alkenyleneO, OC1-20alkyleneNR6, OC1-20alkenyleneNR6, SC1-20alkyleneO, SC1-20alkenyleneO, OC1-20alkyleneS, and OC1-20alkenyleneS, C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, OC1-20alkyleneC (O) , OC1-20alkenyleneC (O) , C (O) C1-20alkyleneS, C (O) C1-20alkenyleneS, SC1-20alkyleneC (O) , SC1-20alkenyleneC (O) , R5NC1-20alkyleneC (S) , R5NC1-20alkenyleneC (S) , C (S) C1-20alkyleneNR6, C (S) C1-20alkenyleneNR6, C (S) C1-20alkyleneO, C (S) C1-20alkenyleneO, OC1-20alkyleneC (S) , OC1-20alkenyleneC (S) , SC1-20alkyleneC (S) , SC1-20alkenyleneC (S) , OC1-20alkyleneO, OC1-20alkenyleneCO, SC1-20alkyleneS, or SC1-20alkenyleneS, each of which is independently and optionally interrupted by one or more of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) , C (O) S, NC1-4alkylC (O) O, NHOC (O) NH, NC1-4alkylOC (O) , C=NNH, C=NNH2, C=NOH, C=NO, NH-NH, NH-NC1-4alkyl, NC1-4alkyl-NH, NC1-4alkylNC1-4alkyl, S, O, NH, N (C1-6alkyl) , C (O) , C (O) NH, NHC (O) , NHC (O) NH, NHC (S) NH, C (S) NH, NHC (S) , NHC (NH) , NHC (NC1-4alkyl) , C (NH) NH, C (NC1-4alkyl) NH, NC4-18cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and wherein each alkyl, alkylene or alkenylene is optionally substituted with one or more substituents selected from halo, COOH, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR7R8, and each of R5, R6, R7 and R8 is independently selected from H and C1-4alkyl.In some embodiments, the cleavable linker comprises or is a structure of Formula (I-CL3) :-Y1-W1-Y2-W2-Y3-W3-Y4-W4-Y5-W5-Y6-, (I-CL3)wherein each of W1, W2, W3, W4, or W5 is independently a bond, or unbranched or branched C1-6alkylene;wherein each of Y1, Y2, Y3, Y4, Y5, Y6 is independently a bond, O, S, S-S, C (O) O, OC (O) , OC (O) O, OC (O) NRY, NRYC (O) O, NRY, C (O) , C (O) NRY, NRYC (O) , NRYC (O) NRY, C5-7cycloalkyl, C4-6heterocycloalkyl, or CH (RAA) ,wherein each RY is independently H, C1-6alkyl, C1-6alkyl substituted with one or more independently selected halogen, C1-6alkyleneOH, C1-6alkyleneNR7R8, C1-5alkyleneCOOH, or C1-4alkyleneOC1-4alkyl; andwherein RAA is a side chain of a naturally occurring amino acid;provided that at least one of Y1, Y2, Y3, Y4, Y5, Y6 is not a bond.In some embodiments, at least one of Y1, Y2, Y3, Y4, Y5, Y6 is C (O) O, OC (O) , OC (O) O, OC (O) NRY, or NRYC (O) O.In some embodiments, the cleavable linker comprises one or more groups comprising a structure of Formula (I-CL1) :andwherein W is selected from C (R10a) 2, N (R10a) or O,each R10a is independently H, C1-6alkyl, C1-6alkyl substituted with one or more independently selected halogen, C1-6alkyleneOH, C1-6alkyleneNR7R8, C1-5alkyleneCOOH, C1-4alkyleneOC1-4alkyl, or the side chain of a naturally occurring amino acid, or two R10a groups, together with the carbon atom to which they are attached, form a C3-10cycloalkyl or C3-10heterocycloalkyl;each R10b is independently H, C1-6alkyl, C1-6alkyl substituted with one or more independently selected halogen, C1-6alkyleneOH, C1-6alkyleneNR7R8, C1-5alkyleneCOOH, C1-4alkyleneOC1-4alkyl, or two R10b groups, together with the carbon atom to which they are attached, form a C3-10cycloalkyl or C3-10heterocycloalkyl; andR7 and R8 are each independently H, or C1-4alkyl.In some embodiments, the cleavable linker comprises one or more groups selected from the group consisting ofIn some embodiments, at least one of Y1, Y2, Y3, Y4, Y5, Y6 is -S-S-.In some embodiments, the cleavable linker comprises one or more groups having a structure of Formula (I-CL2) :andwherein each R11 is independently selected from H or C1-4alkyl.In some embodiments, the cleavable linker comprises one or more groups selected from the group consisting ofIn some embodiments, the enzymatically cleavable peptide sequence is selected from the group consisting of Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys.In some embodiments, the cleavable linker comprises one or more amino acid residues. In some embodiments, the amino acid residue is derived from a naturally occurring amino acid or a non-naturally occurring amino acid. In some embodiments, the cleavable linker further comprises one of more moieties of - (OCH2CH2) n-, wherein n is an integer of 1-28. In some embodiments, the cleavable linker further comprises one or more groups selected from the group consisting of - (C2alkyleneO) 2C1alkyleneC (O) (OEG) , - (C2alkyleneO) C2alkyleneC (O) (PEG1) , - (C2alkyleneO) 3C2alkyleneC (O) (PEG3) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG6) , - (C2alkyleneO) 6C2alkyleneC (O) (PEG8) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG12) . In some embodiments, the compound of Formula I is a compound of Formula I (i) , and at least one of LA1, LA2, LA3, LE1, LE2 and LE3 isa cleavable linker. In some embodiments, the compound of Formula I (i) is a compound of Formula I (i-a) , and at least one of LA1 and LE1 is cleavable linker. In some embodiments, the compound of Formula I is a compound of Formula I (ii) , and at least one of LA1 and LE1 is cleavable linker. In some embodiments, the compound of Formula I is a compound of Formula I (iii) , and at least one of LA1, LA2, LA3, LE1, LE2 and LE3 is a cleavable linker. In some embodiments, the compound of Formula I (iii) is a compound of Formula I (iii-a) and at least one of LA1, LA2, LA3, and LE1 isa cleavable linker. In some embodiments, the compound of Formula I is a compound of Formula I (iv) , and one of LAand LE1 isa cleavable linker. In some embodiments, Z is a linear polypeptide comprising at least 20 amino acids. In some embodiments, Z is a linear polypeptide comprising about 20 to about 80 amino acids. In some embodiments, Z is a linear polypeptide comprising about 20 to about 65 amino acids. In some embodiments, Z specifically binds to a target selected from the group consisting of B7 Homolog 3 (B7-H3) , prostate specific membrane antigen (PSMA) , glucagon-like peptide-1 receptor (GLP-1R) , glucose-dependent insulinotropic peptide (gastric inhibitory peptide; GIP) receptor (GIP-R) , cholecystokinin-2 receptor (CCK2R) , somatostatin receptor 2 (SSTR2) , neuropeptide Y receptor type 1 (Y1R) , nectin-4, epithelial cell adhesion molecule (EpCAM) , insulin-like growth factor-1 (IGF-1) , and human epidermal growth factor receptor 2 (HER2) . In some embodiments, Z specifically binds to GLP-1R or GIP-R. In some embodiments, Z specifically binds to GIP-R and comprises or consists of an amino acid sequence of: Xa1Xa2EGT FXa7SDY SIAXa14D Xa16 Xa17Xa18 Xa19Xa20 Xa21FXa23NW LL Xa28Xa29 (SEQ ID NO. 4) ,whereinXa1 is selected from histidine (His) , tyrosine (Tyr) , D-Tyr, Phe, des-amino histidine, and des-amino tyrosine;Xa2 is selected from alanine (Ala) , D-Ala and 2-aminoisobutyric acid (Aib) ;Xa7is selected from threonine (Thr) and isoleucine (Ile) ;Xa14 is selected from norleucine (Nle) , methionine (Met) and leucine (Leu) ;Xa16 is lysine (Lys) , (Serine) Ser, Thr, His, Aib, arginine (Arg) and (glutamic acid) Glu;Xa17 is glutamine (Gln) and (isoleucine) Ile;Xa18 is selected from Arg and His;Xa19 is Gln and Ala;Xa20 is selected from Gln, Aib, His, Arg and Lys;Xa21 is selected from aspartic acid (Asp) , Lys, Glu, Thr, Ala;Xa23 is selected from valine (Val) , Ile, Leu, (phenylalanine) Phe and Lys;Xa28 is selected from Glu, Ser and Ala; andXa29 is selected from Gln, glycine (Gly) , Ala and Lys.In some embodiments, Z specifically binds to GIP-R and comprises or consists of an amino acid sequence of:Xa1Xa2EGT FXa7SDY SIAXa14D Xa16 Xa17Xa18 Xa19Xa20 Xa21FXa23NW LL Xa28Xa29 Xa30Xa31Xa32Xa33G Xa35 Xa36 Xa37 Xa38 Xa39Xa40 (SEQ ID NO. 5) ,whereinXa1 is selected from histidine (His) , tyrosine (Tyr) , D-Tyr, Phe, des-amino histidine, and des-amino tyrosine;Xa2 is selected from alanine (Ala) , D-Ala and 2-aminoisobutyric acid (Aib) ;Xa7 is selected from threonine (Thr) and isoleucine (Ile) ;Xa14 is selected from norleucine (Nle) , methionine (Met) and leucine (Leu) ;Xa16 is lysine (Lys) , serine (Ser) , Thr, His, Aib, arginine (Arg) and glutamic acid (Glu) ;Xa17 is glutamine (Gln) and Ile;Xa18 is selected from Arg and His;Xa19 is Gln and Ala;Xa20 is selected from Gln, Aib, His, Arg and Lys;Xa21 is selected from aspartic acid (Asp) , Lys, Glu, Thr and Ala;Xa23 is selected from valine (Val) , Ile, leucine (Leu) , phenylalanine (Phe) and Lys;Xa28 is selected from Glu, Ser and Ala;Xa29 is selected from Gln, glycine (Gly) , Ala and Lys;Xa30 is selected from Gly, Ser, D-Ser, and Lys;Xa31 is selected from proline (Pro) , and D-Pro;Xa32 is selected from Ser, Glu, and D-Ser;Xa33 is selected from Ser, Glu, and D-Ser;Xa35 is selected from Ala, Ser, Glu, and D-Ala;Xa36 is selected from Pro, and D-Pro;Xa37 is selected from Pro, and D-Pro;Xa38 is selected from Pro, and D-Pro;Xa39 is selected from Ser, Glu, or D-Ser; andXa40 is absent or is Lys.In some embodiments, each of LZ, A and each E is independently covalently linked to an amino acid residue of Z selected from Xa16, Xa18, Xa20, Xa21, Xa23, Xa29, Xa30, and Xa40. In some embodiments, LZ or A are covalently linked to Xa21 of Z and E is covalently linked to Xa40of Z, and Xa21 and Xa40 are both lysine. In some embodiments, LZ is covalently linked Xa21, and Xa21 is lysine and Xa40is absent. In some embodiments, Z specifically binds to GLP-1R and comprises or consists of an amino acid sequence of:Xb1Xb2EGT FTSDXb10 SXb12Xb13Xb14E X16Xb17Xb18AX20 Xb21FXb23AW L Xb27X28Xb29 (SEQ ID NO. 6) ,whereinXb1 is selected from alanine (Ala) , glycine (Gly) , histidine (His) , valine (Val) , Leucine (Leu) , isoleucine (Ile) , threonine (Thr) , and serine (Ser) ;Xb2 is selected from Ala, D-Ala and Aib;Xb10 is selected from Val and Leu;Xb12 is selected from Ser, lysine (Lys) and arginine (Arg) ;Xb13 is selected from tyrosine (Tyr) and glutamine (Gln) ;Xb14 is selected from Leu, Nle and methionine (Met) ;Xb16 is selected from glutamic acid (Glu) , Ser, Thr, His, Aib, Arg and Lys;Xb17 is selected from Gln, Glu and Arg;Xb18 is selected from Ala and Val;Xb20 is selected from Gln and Lys;Xb21 is selected from Glu, Asp and Leu;Xb23 is selected from Ile, Val, Leu and Phe;Xb27 is selected from Val and Lys;Xb28 is Lys; andXb29 is Gly.In some embodiments, the GLP-1R binding group comprises or consists of an amino acid sequence of:Xb1Xb2EGT FTSDXb10 SXb12Xb13Xb14E X16Xb17Xb18AX20 Xb21FXb23AW L Xb27X28Xb29Xb30 Xb31Xb32Xb33G Xb35 Xb36 Xb37 Xb38 Xb39Xb40 (SEQ ID NO. 7) .whereinXb1 is selected from Ala, Gly, His, Val, Leu, Ile, Thr, Ser and Aib;Xb2 is selected from Ala, D-Ala and Aib;Xb10 is selected from Val and Leu;Xb12 is selected from Ser, Lys and Arg;Xb13 is selected from Tyr and Gln;Xb14 is selected from Leu, Nle and Met;Xb16 is selected from Glu and Lys;Xb17 is selected from Gln, Glu and Arg;Xb18 is selected from Ala and Val;Xb20 is selected from Gln and Lys;Xb21 is selected from Glu and Leu;Xb23 is Ile;Xb27 is selected from Val and Lys;Xb28 is Lys;Xb29 is Gly;Xb30 is selected from Gly, and Lys;Xb31 is selected from Pro, and D-Pro;Xb32 is selected from Ser, Glu, and D-Ser;Xb33 is selected from Ser, Glu, and D-Ser;Xb35 is selected from Ala, Ser, Glu, and D-Ala;Xb36 is selected from Pro, and D-Pro;Xb37 is selected from Pro, and D-Pro;Xb38 is selected from Pro, and D-Pro;Xb39 is selected from Ser, Glu, and D-Ser; andXb40 is absent or Lys.In some embodiments, each of LZ, A and each E is independently covalently linked to an amino acid residue of Z selected from Xb16, Xb20, Xb21, Xb23, Xb28, Xb29, Xb30, or Xb40. In some embodiments, LZ and A are covalently linked to Xb28 of Z and E is covalently linked to Xb40, and Xb28 and Xb40 are both lysine. In some embodiments, LZ or T is covalently linked to Xb28 of Z, Xb28 is lysine and Xb40 is absent.In some embodiments, Z specifically binds to B7-H3 and comprises or consists of an amino acid sequence of:AEAKXc5 AKEKI Xc11ALXc14E IIWLP NLTXc19Xc20 QIXc23AF IAXc28LN DDPSQ SSELL SEAKK LXc47Xc48SQ Xc51Xc52Xc53Xc54Xc55 (SEQ ID NO. 27) ,whereinXc5 is selected from Phe or Tyr;Xc11 is selected from Lys, Asn or Ala;Xc14 is selected from Ser or Gly;Xc19 is selected from Tyr or His;Xc20 is selected from Gly or Asp;Xc23 is selected from Lys or Met;Xc28 is selected from Lys or Ala;Xc47 is selected from Ser or Asn;Xc48 is selected from Glu or Asp;Xc51 is selected from null or Gly;Xc52 is selected from null or Gly;Xc53 is selected from null or Gly;Xc54 is selected from Cys or Lys; andXc55 is selected from null or Ala.In some embodiments, Z specifically binds to B7-H3 and comprises or consists of an amino acid sequence having at least 80%identity with AEAKFAKEKI KALSEIIWLP NLTYGQIKAF IAKLNDDPSQ SSELLSEAKK LSESQGGGCA (SEQ ID NO. 29) .In some embodiments, LZ is covalently linked to Xc54 of Z.In some embodiments, Xc54 is Cys, and LZ is covalently linked to Xc54 and comprises a structure selected from the group consisting ofIn some embodiments, the compound of Formula I is selected from any one in Table1.In one aspect, provided herein is a radionuclide complex, comprising the compound described herein and a radionuclide.In some embodiments, the radionuclide is selected from the group consisting of 99Tc, 99mTc, 188Re, 186Re, 153Sm, 66Ga, 67Ga, 68Ga, 111In, 123In, 59Fe, 63Zn, 52Fe, 52Mn, 45Ti, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 82Rb, 195mPt, 191mPt, 193mPt, 117mSn, 89Zr, 177Lu, 18F, 188Re, 186Re, 153Sm, 66Ho, 86Y , 87Y , 90Y, 89Sr, 153Gd, 159Gd, 225Ac, 212Bi, 213Bi, 198Au, 199Au, 193mPt, 197Pt, 103Pd, 109Pd, 105Rh, 101mRh, 103mRh, 223Ra, 224Ra, 97Ru, 227Th, 229Th, 161Tb, 149Tb, 203Pb, 212Pb, 201TI, 119Sb, 58mCo, 55Co, 57Co, 47Sc, 149Pm, 142Pr, 161Ho, 166Ho, 175Yb, and 51Cr.In one aspect, provided herein is a pharmaceutical composition, comprising the compound or the radionuclide complex described herein, and a pharmaceutically acceptable excipient.In some embodiments, provided herein is a kit, comprising:(1) the compound described herein or the radionuclide complex described herein, and(2) instructions for using the kit to diagnose a disease or disorder in a subject in need thereof.In one aspect, provided herein is a method of treating a disease or disorder in a subject in need thereof, comprising administering to the subject a pharmaceutical effective amount of the compound described herein or the radionuclide complex described herein.In one aspect, provided herein is a method of inhibiting proliferative activity in a cell, comprising administering an effective amount of the compound described herein or the radionuclide complex described herein.In one aspect, provided herein is a method of imaging a tissue in a subject, comprising:(1) administering an imaging effective amount a pharmaceutical effective amount of the compound described herein or the radionuclide complex described herein, to a subject in need thereof, and(2) applying an imaging technique to detect emitted gamma rays.In one aspect, provided herein is a method of diagnosing cancer in subject comprising:(1) administering a diagnostic effective amount a pharmaceutical effective amount of the compound described herein or the radionuclide complex described herein, and(2) applying an imaging technique to detect emitted gamma rays.Other features and advantages of the present application will become apparent from the following detailed description. It should be understood, however, that the detailed description and the specific examples, while indicating embodiments of the application, are given by way of illustration only and the scope of the claims should not be limited by these embodiments, but should be given the broadest interpretation consistent with the description as a whole.BRIEF DESCRIPTION OF THE DRAWINGSCertain embodiments of the application will now be described in greater detail with reference to the attached drawings in which:Figures 1A-1E illustrate biodistribution studies of the radionuclide complexes targeting GLP-1R.Figures 2A-2D illustrate biodistribution studies of the radionuclide complexes targeting GIPR.Figures 3A-3E illustrate biodistribution studies of the radionuclide complexes targeting B7-H3.DETAILED DESCRIPTIONI .DefinitionsUnless otherwise indicated, the definitions and embodiments described in this and other sections are intended to be applicable to all embodiments and aspects of the present application herein described for which they are suitable as would be understood by a person skilled in the art.All features disclosed in the specification, including the claims, abstract, and drawings, and all the steps in any method or process disclosed, may be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive. Each feature disclosed in the specification, including the claims, abstract, and drawings, can be replaced by alternative features serving the same, equivalent, or similar purpose, unless expressly stated otherwise.As used in this application and claim (s) , the words "comprising" (and any form of comprising, such as "comprise" and "comprises") , "having" (and any form of having, such as "have" and "has") , "including" (and any form of including, such as "include" and "includes") or "containing" (and any form of containing, such as "contain" and "contains") , are inclusive or open-ended and do not exclude additional, unrecited elements or process steps.The term “consisting” and its derivatives as used herein are intended to be closed terms that specify the presence of the stated features, elements, components, groups, integers, and / or steps, and also exclude the presence of other unstated features, elements, components, groups, integers and / or steps.The term “consisting essentially of” , as used herein, is intended to specify the presence of the stated features, elements, components, groups, integers, and / or steps as well as those that do not materially affect the basic and novel characteristic (s) of these features, elements, components, groups, integers, and / or steps.The terms "about" , “substantially” and “approximately” as used herein mean a reasonable amount of deviation of the modified term such that the end result is not significantly changed. These terms of degree should be construed as including a deviation of at least ±5%of the modified term if this deviation would not negate the meaning of the word it modifies or unless the context suggests otherwise to a person skilled in the art.As used in the present application, the singular forms “a” , “an” and “the” include plural references unless the content clearly dictates otherwise. For example, an embodiment including “a compound” should be understood to present certain aspects with one compound, or two or more additional compounds.In embodiments comprising an “additional” or “second” component or effect, such as an additional or second compound, the second compound as used herein is different from the other compounds or first compound. A “third” compound is different from the other, first, and second compounds, and further enumerated or “additional” compounds are similarly different.The term “and / or” as used herein means that the listed items are present, or used, individually or in combination. In effect, this term means that “at least one of” or “one or more” of the listed items is used or present. The term “and / or” with respect to enantiomers, prodrugs, salts and / or solvates thereof means that the compounds of the application exist as individual enantiomers, prodrugs, salts and hydrates, as well as a combination of, for example, a salt of a solvate of a compound of the application.The term “compound (s) of the application” or “compound (s) of the present application” and the like as used herein refers to a compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) , I (i-a) - A (C) (C) , Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , I (iii) , I (iii) -A, I (iii) -A (A) , I (iii) - A (B) , I (iii) -A (C) , I (iv) , I (iv) (A) , I (iv) (B) , I (iv) (C) and Formula I (iv-a) .The term “complex of the application” or “complexes of the application” and the like as used herein refers to a complex comprising one or more compounds of the application and one or more radionuclides.The term “composition of the application” or “composition of the present application” and the like as used herein refers to a composition comprising one or more compounds or complexes of the application.The term “radioligand” as used herein refers to a compound comprising a targeting moiety and a radionuclide. The complexes of the application are examples of radioligands.The term “radionuclide” as used herein refers to any atom capable of undergoing radioactive decay. The term radionuclide is used synonymously herein with radioactive nuclide, radioisotope, and radioactive isotope.The term “suitable” as used herein means that the selection of the particular compound or conditions would depend on the specific synthetic manipulation to be performed, the identity of the molecule (s) to be transformed and / or the specific use for the compound, but the selection would be well within the skill of a person trained in the art.The present description refers to a number of chemical terms and abbreviations used by those skilled in the art. Nevertheless, definitions of selected terms are provided for clarity and consistency.The term “protecting group” or “PG” and the like as used herein refers to a chemical moiety which protects or masks a reactive portion of a molecule to prevent side reactions in those reactive portions of the molecule, while manipulating or reacting a different portion of the molecule. After the manipulation or reaction is complete, the protecting group is removed under conditions that do not degrade or decompose the remaining portions of the molecule. The selection of a suitable protecting group can be made by a person skilled in the art. Many conventional protecting groups are known in the art, for example as described in “Protective Groups in Organic Chemistry” McOmie, J.F.W. Ed., Plenum Press, 1973, in Greene, T.W. and Wuts, P.G.M., “Protective Groups in Organic Synthesis” , John Wiley &Sons, 3rd Edition, 1999 and in Kocienski, P. Protecting Groups, 3rd Edition, 2003, Georg Thieme Verlag (The Americas) .The term “alkyl” as used herein, whether it is used alone or as part of another group, means straight or branched chain, saturated alkyl groups. The number of carbon atoms that are possible in the referenced alkyl group are indicated by the prefix “Cn1-n2” . For example, the term C1-10alkyl means an alkyl group having 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms. All alkyl groups are optionally fluoro-substituted unless otherwise indicated.The term “alkylene” , whether it is used alone or as part of another group, means straight or branched chain, saturated alkylene group, that is, a saturated carbon chain that contains substituents on two of its ends. The number of carbon atoms that are possible in the referenced alkylene group are indicated by the prefix “Cn1-n2” . For example, the term C2-6alkylene means an alkylene group having 2, 3, 4, 5 or 6 carbon atoms. All alkylene groups are optionally fluoro-substituted unless otherwise indicated.The term “alkenyl” as used herein, whether it is used alone or as part of another group, means straight or branched chain, unsaturated alkyl groups containing at least one double bond. The number of carbon atoms that are possible in the referenced alkylene group are indicated by the prefix “Cn1-n2” . For example, the term C2-6alkenyl means an alkenyl group having 2, 3, 4, 5 or 6 carbon atoms and at least one double bond. All alkenyl groups are optionally fluoro-substituted unless otherwise indicated.The term “alkenylene” , whether it is used alone or as part of another group, means straight or branched chain, unsaturated alkyl groups containing at least one double bond that contains substituents on two of its ends. The number of carbon atoms that are possible in the referenced alkylene group are indicated by the prefix “Cn1-n2” . For example, the term C2-6alkenylene means an alkenylene group having 2, 3, 4, 5 or 6 carbon atoms. All alkenylene groups are optionally fluoro-substituted unless otherwise indicated.The term “aryl” as used herein, whether it is used alone or as part of another group, refers to carbocyclic groups containing at least one aromatic ring and contains 6 to 20 carbon atoms.The term “cycloalkyl, ” as used herein, whether it is used alone or as part of another group, means a saturated carbocyclic group containing from 3 to 20 carbon atoms and one or more rings. The number of carbon atoms that are possible in the referenced cycloalkyl group are indicated by the numerical prefix “Cn1-n2” . For example, the term C3-10cycloalkyl means a cycloalkyl group having 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms.The term “heterocycloalkyl” as used herein, whether it is used alone or as part of another group, refers to cyclic groups containing at least one non-aromatic ring containing from 3 to 20 atoms in which one or more of the atoms are a heteroatom selected from O, S and N and the remaining atoms are C. Heterocycloalkyl groups are either saturated or unsaturated (i.e. contain one or more double bonds) . When a heterocycloalkyl group contains the prefix Cn1-n2 this prefix indicates the number of carbon atoms in the corresponding carbocyclic group, in which one or more, suitably 1 to 5, of the ring atoms is replaced with a heteroatom as selected from O, S and N and the remaining atoms are C. In some embodiments, 1 to 5, 1 to 4, 1 to 3, 1, 2, or 3 of the ring atoms in a heterocycloalkyl are heteroatoms, each independently selected from the group consisting of O, S, and NH. Heterocycloalkyl groups are optionally benzofused.The term “heteroaryl” as used herein, whether it is used alone or as part of another group, refers to cyclic groups containing at least one heteroaromatic ring containing 5-20 atoms in which one or more (e.g., 1, 2, 3, or 4) of the atoms are a heteroatom selected from O, S and N and the remaining atoms are C. When a heteroaryl group contains the prefix Cn1-n2 this prefix indicates the number of carbon atoms in the corresponding carbocyclic group, in which one or more, suitably 1 to 5, of the ring atoms is replaced with a heteroatom as defined above. In some embodiments, 1 to 5, 1 to 4, 1 to 3, 1, 2, or 3 of the ring atoms in a heteroaryl are heteroatoms, each independently selected from the group consisting of O, S, N, and NH. Heteroaryl groups are optionally benzofused.All cyclic groups, including aryl, heteroaryl, heterocycloalkyl and cycloalkyl groups, contain one or more than one ring (i.e. are polycyclic) . When a cyclic group contains more than one ring, the rings may be fused, bridged, spirofused or linked by a bond.The term “benzofused” as used herein refers to a polycyclic group in which a benzene ring is fused with another ring.A first ring being “fused” with a second ring means the first ring and the second ring share two adjacent atoms there between.A first ring being “bridged” with a second ring means the first ring and the second ring share two non-adjacent atoms there between.A first ring being “spirofused” with a second ring means the first ring and the second ring share one atom there between.The term “target binding group" are used herein refers to a moiety that is recognized by a target site to which it binds.The term “target” or “target site” as used herein means a receptor, for example a cell surface receptor, antigen or other protein on a cell surface to which a target binding group can bind.The term “peptide” as used herein refers to two or more amino acids linked by a peptide bond and includes synthetic and natural peptides as well as peptides that are modified. Various lengths of peptides are contemplated herein.The term “analogue” when used herein as referring to a peptide refers to a modified peptide wherein one or more amino acid residues of the peptide have been substituted by other amino acid residues and / or wherein one or more amino acid residues have been deleted from the peptide and / or wherein one or more amino acid residues have been added to the peptide.The term “GIP” as used herein means glucose-dependent insulinotropic peptide which is also known as gastric inhibitory polypeptide or gastric inhibitory peptide also known as glucose-dependent insulinotropic polypeptide. In humans, GIP (also known as hGIP) circulates as a 42-amino acid peptide of SEQ ID NO. 1.The term “GIP-R” as used herein means glucose-dependent insulinotropic polypeptide receptor or gastric inhibitory polypeptide receptor GIP-R is a G-protein coupled receptor for GIP.The term “GIP-R binding group” as used herein refers to a peptide that binds gastric inhibitory polypeptide receptor. An example of a GIP-R binding group is a GIP analogue.The term "GIP analogue" as used herein refers to any peptide GIP-R agonist, including naturally occurring forms of GIP1, either human or from any other species. The term includes peptides, peptide derivatives and peptide mimics. In one embodiment, the GIP analogue is a variant of GIP.The term “GLP-1” as used herein means glucagon-like peptide-1. In humans, GLP-1 (also known as hGLP-1) circulates as a 30 or 31 -amino acid peptide of SEQ ID NO. 2 or 3.The term “GLP-1R” as used herein means glucagon-like peptide-1 receptor. “GLP-1R” is a G-protein coupled receptor for GLP-1.The term “glucagon-like peptide-1 receptor (GLP-1R) binding group” as used herein refers to a peptide that binds glucagon-like peptide-1 receptor. An example of a GLP-1R binding group is a GLP-1R analogue.The term "GLP-1 analogue" , as used herein is indicated any GLP-1 receptor agonist, including naturally occurring forms of GLP-1, either human or from any other species. The term includes peptides, peptide derivatives and peptide mimics. In one embodiment, the GLP-1 analogue is a variant of GLP-1.As used herein, the term “variant” with respect to peptides refers to a peptide with at least one amino acid substitution, deletion or addition compared to a reference peptide.As used herein, the term “conservatively substituted variant” refers to a variant with at least one conservative amino acid substitution. A "conservative amino acid substitution" as used herein, refers to the substitution of an amino acid with similar hydrophobicity, polarity, and R-chain length for one another. In a conservative amino acid substitution, one amino acid residue is replaced with another amino acid residue without abolishing the protein's desired properties. Without the intention of being limited thereby, in one embodiment, the substitutions of amino acids are made that preserve the structure responsible for the ability of the peptide to increase glucose uptake or decrease hepatic glucose production as disclosed herein. Examples of conservative amino acid substitutions include:Peptides with sequence identity to a reference peptide are also contemplated herein. Sequence identity can be calculated according to methods known in the art. Sequence identity is optionally assessed by the algorithm of BLAST version 2.1 advanced search. BLAST is a series of programs that are available, for example, online from the National Institutes of Health. The advanced blast search is set to default parameters. (i.e. Matrix BLOSUM62; Gap existence cost 11; Per residue gap cost 1; Lambda ratio 0.85 default) . References to BLAST searches are: Altschul, S.F., Gish, W., Miller, W., Myers, E.W. &Lipman, D.J. (1990) “Basic local alignment search tool. ” J. Mol. Biol. 215: 403410; Gish, W. &States, D.J. (1993) “Identification of protein coding regions by database similarity search. ” Nature Genet. 3: 266272; Madden, T.L., Tatusov, R.L. &Zhang, J. (1996) “Applications of network BLAST server” Meth. Enzymol. 266: 131_141; Altschul, S.F., Madden, T.L., A.A., Zhang, J., Zhang, Z., Miller, W. &Lipman, D.J. (1997) “Gapped BLAST and PSI_BLAST: a new generation of protein database search programs. ” Nucleic Acids Res. 25: 33893402; Zhang, J. &Madden, T.L. (1997) “PowerBLAST: A new network BLAST application for interactive or automated sequence analysis and annotation. ” Genome Res. 7: 649656. In addition, percent identity between two sequences may be determined by comparing a position in the first sequence with a corresponding position in the second sequence. When the compared positions are occupied by the same amino acid, as the case may be, the two sequences are conserved at that position. The degree of conservation between two sequences is often expressed, as it is here, as a percentage representing the ratio of the number of matching positions in the two sequences to the total number of positions compared.The term “circulation enhancing group” as used herein is a chemical structure that increases the circulation time of the compound of the application in the blood.The term “chelating group” as used herein refers to chelator capable of complexing a radionuclide.The term “branching group that is at least trivalent” as used herein refers to any molecular structure that comprises at least three terminal functional groups and each terminal functional group connects with another molecular structure. The at least three terminal functional groups can be the same or different.The term “in vivo half-life” as used herein refers to the time required for half the quantity of a compound administered to a subject to be cleared from the circulation (e.g blood) and / or other tissues of the subject.The term “ex vivo plasma half-life” as used herein refers to the time required for half the quantity of a compound that has been combined with plasma, for example, mouse plasma, to be degraded within the plasma at about 37℃ and at neutral pH. Ex vivo plasma half-life may be measured for example by incubating a radioligand in mouse plasma at 37 ℃. At each desired time point, an aliquot of sample may be taken out, worked up and analyzed by HPLC with radio detection. This measures the remaining %of intact radioligand, which can be plotted to provide a measure of ex vivo plasma half-life.The term “linker group” as used herein refers to any molecular structure that connects two or more other molecular structures together.The term “non-cleavable linker group” as used herein refers to any molecular structure that joins two or more other molecular structures together and comprises non-cleavable moieties. The non-cleavable linker group contains functional groups on each of the termini that react with complementary functional groups of the molecules to be linked to form non-cleavable moieties. When a compound of the application comprises more than one non-cleavable linker, each non-cleavable linker is an independent non-cleavable linker and the non-cleavable linkers may be the same or different.The term “cleavable linker” as used herein refers to any molecular structure that joins two or more other molecular structures together and comprises at least one cleavable moiety. The cleavable linker group contains functional groups on each of the termini that reacts with complementary functional groups of the molecules to be linked to form non-cleavable or cleavable moieties. When a compound of the application comprises more than one cleavable linker, each cleavable linker is an independent cleavable linker and the cleavable linkers may be the same or different.The term “non-cleavable moiety (ies) ” as used herein refers to chemical functional groups that resist degradation by one or more of acids, bases, reducing agents oxidizing agents and enzymes. Non-cleavable moieties are generally stable towards cleavage but can be cleavable, for example, by enzymes or physiological conditions inside a cell, tissue or organ after a period of time and after the compound or the portion of the compound that contains the non-cleavable moiety is delivered or transported to the target site.The term “cleavable moiety (ies) ” as used herein refers to a chemical functional group that is degraded by one or more of acids, bases, reducing agents, oxidizing agents and enzymes.The term “stable towards cleavage” , or “resists degradation” as used herein refers to a chemical functional group that less than about 5%of which is degraded in mouse plasma at about 37℃ after at least about 48 hours following combining of a compound comprising the chemical functional group with the mouse plasma.The term “degraded” or “cleavable” as used herein in relation to the cleavable moiety means that greater than about 5%of the cleavable moiety is degraded in mouse plasma at about 37℃ after at least about 48 hours following combining of a compound comprising the cleavable moiety with the mouse plasma.The term “amino acid residue” are used herein refers to an amino acid without the “-OH” of its carboxyl group and the “H” portion of an amino group. “Amino acid residue” includes natural and non-naturally occurring amino acid residues.The term “amino acid” as used herein is any compound comprising a carboxyl (-CO2H) functional group and an amine (-NH2) functional group.The term “non-naturally occurring amino acid” , as used herein, refers to an amino acid that is not a naturally occurring amino acid and is obtained synthetically or by modification of a natural amino acid.The term “naturally occurring amino acid” or “natural amino acid” as used herein refers amino acids that occur naturally and are encoded by the genetic code, as well as those encoded amino acids that are later modified in vivo.The term “N-methyl amino acids” are used herein refers to amino acids that comprise methyl group at the alpha amino nitrogen instead of a proton.The term “alpha-methyl amino acids” as used herein refers to amino acids that comprise a methyl comprise at the alpha carbon instead of a proton.The term “at least one” means one or more” , e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9 or more.The term “treating” or “treatment” as used herein and as is well understood in the art, means an approach for obtaining beneficial or desired results, including clinical results. Beneficial or desired clinical results include but are not limited to alleviation or amelioration of one or more symptoms or conditions, diminishment of extent of disease, stabilized (i.e. not worsening) state of disease, preventing spread of disease, delay or slowing of disease progression, amelioration or palliation of the disease state, diminishment of the reoccurrence of disease, and remission (whether partial or total) , whether detectable or undetectable. “Treating” and “treatment” can also mean prolonging survival as compared to expected survival if not receiving treatment. A subject with early cancer can be treated to prevent progression for example, or alternatively a subject in remission can be treated with a compound or composition of the application to prevent recurrence. Treatment methods comprise administering to a subject a therapeutically effective amount of one or more of the compounds of the application and optionally consist of a single administration, or alternatively comprise a series of administrations.“Palliating” a disease, disorder or condition means that the extent and / or undesirable clinical manifestations of a disease, disorder or condition are lessened and / or time course of the progression is slowed or lengthened, as compared to not treating the disorder.The terms “preventing” , “prevention” or “prophylaxis” , or synonyms thereto, as used herein refers to a reduction in the risk or probability of a patient becoming afflicted with a disease, disorder or condition or manifesting a symptom associated with a disease, disorder or condition.As used herein, the term “therapeutically effective amount” means an amount of a compound, or one or more compounds, of the application, or complex, or one or more complexes of the application that is effective, at dosages and for periods of time necessary to achieve the desired result.The term “imaging effective amount” when used in connection with a one or more complexes of the application, is an amount of the complex that is sufficient to produce a visible image when the complex is administered to a subject and the radiation emitted by the complex is detected using positron-emission tomography ( “PET” ) or single photon emission tomography (SPECT) or autoradiography or ex vivo or in vitro binding assays.As used herein, the term “diagnostic effective amount” means an amount of a compound, or one or more compounds, of the application or complex, or one or more complexes of the application, that is effective, at dosages and for periods of time necessary to achieve the desired diagnostic effect including, for example, diagnosing a particular condition being assessed.The term “administered” as used herein means administration of an imaging, diagnostic and / or therapeutically effective amount of one or more compounds, complexes or compositions of the application to a cell, tissue, organ or subject.The term “cancer” as used herein refers to cellular-proliferative disease states.The term “subject” as used herein includes all members of the animal kingdom including mammals, and suitably refers to humans. Thus, the methods and uses of the present application are applicable to both human therapy and veterinary applications.The term “cell” as used herein refers to a single cell or a plurality of cells and includes a cell either in a cell culture or in a subject.The term “pharmaceutically acceptable” means compatible with the treatment of subjects, for example humans.The term “pharmaceutically acceptable carrier” means a non-toxic solvent, dispersant, excipient, adjuvant or other material which is mixed with the active ingredient in order to permit the formation of a pharmaceutical composition, i.e., a dosage form capable of administration to a subject.The term “pharmaceutically acceptable salt” means either an acid addition salt or a base addition salt which is suitable for, or compatible with the treatment of subjects.An acid addition salt suitable for, or compatible with, the treatment of subjects is any non-toxic organic or inorganic acid addition salt of any basic compound.A base addition salt suitable for, or compatible with, the treatment of subjects is any non-toxic organic or inorganic base addition salt of any acidic compound.The term “solvate” as used herein means a compound, or a salt and / or prodrug of a compound, wherein molecules of a suitable solvent are incorporated in the crystal lattice. A suitable solvent is physiologically tolerable at the dosage administered.The term “ESL1” or “ESL-1” as used herein refers to a cleavable linker group having the chemical formula:The term “ESL2” or “ESL-2” as used herein refers to a cleavable linker group having the chemical formula:The term “ESL3” or “ESL-3” as used herein refers to a cleavable linker group having the chemical formula:The term “SSL1” or “SSL-1” as used herein refers to a cleavable linker group having the chemical formula:The term “OEG” as used herein refers to a group having the chemical formula:The term “Aoc” as used herein refers to a group having the chemical formula:The term “Aun” as used herein refers to a group having the chemical formula:The term “Ava” as used herein refers to a group having the chemical formula:The term “4hBA” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “4hPA-Gly” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “5hPA-Gly” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “4hBA-Leu” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “6hHA-Gly” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “Gly-5aPOH” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “I-PADT” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “SA-5aPOH” as used herein refers to a group having the chemical name 4-hydroxybutanoic acid and having the chemical formula:The term “DAB” as used herein refers to a group having the chemical name 2, 4-diaminobutyric acid and having the chemical formula:The term “DAP” as used herein refers to a group having the chemical name 2, 3-diaminopropionic acid and having the chemical formula:The term “MAL” as used herein refers to a maleimide group having the chemical formula:The term “IPhBu” and “4-pIBA” (4-pIPhBu) can be used interchangeably herein and refer to a group having the chemical name 4-iodophenylbutyryl (4- (p-iodophenyl) butyryl) and having the chemical formula:The term "Ahx” as used herein refers to a linker group having the chemical formula:The term “HO-C14” as used herein refers to a tetradecanedioic acid group having the chemical formula:The term “HO-C18” as used herein refers to an octadecanedioic acid group having the chemical formula:The symbolwhen drawn perpendicularly across a bond indicates a point of covalent attachment of a chemical group.When used, for example, with respect to the methods of treatment, uses, compositions, packages and / or kits of the application, a subject, for example a subject “in need thereof” is a subject that would benefit from administration of one or more compounds or complexes of the application.II. Compounds and radionuclide complexes of the applicationThe present application relates to improved radioligands that target cell surface receptors, methods of preparation of the radioligands and methods of their use for targeting and / or inhibiting target cells. In particular, it relates to radioligands comprising a target binding moiety that is a peptide, a potency enhancing groups, an effector groups, and compositions thereof. The inventors have shown that radioligands described herein have significantly increased uptake in the target tumor cell, and improved tumor uptake to normal organ uptake ratios including tumor to kidney, and / or tumor to blood and tumor to muscle.Accordingly, the present application includes a compound comprising: a target binding group that is a peptide; a potency enhancing group; an effector group; at least two linking groups independently selected from a direct bond, a cleavable linker or a non-cleavable linker; and optionally a branching group that is at least trivalent; wherein each of the potency enhancing group and the effector group is independently covalently linked to the target binding group through the linking group. In some embodiments, at least one of the linking groups is cleavable.In some embodiments, each of the potency enhancing group and the effector group is independently covalently linked to the target binding group through a linking group selected from a direct bond, a cleavable linker or a non-cleavable linker. In some embodiments, the potency enhancing group is covalently linked to the target binding group through a linking group selected from a direct bond or a non-cleavable linker, and the effector group is covalently linked to the target binding group through a cleavable linker. In some embodiments, the effector group is covalently linked to the target binding group through a linking group selected from a direct bond or a non-cleavable linker, and the potency enhancing group is covalently linked to the target binding group through a cleavable linker. In some embodiments, each of the effector group and potency enhancing group is independently covalently linked to the target binding group through a cleavable linker.In some embodiments, each of the potency enhancing group and the effector group is independently covalently linked to an amino acid residue of the target binding group. In some embodiments, the potency enhancing group and the effector group are covalently linked to the same amino acid residue of the target binding group. In some embodiments, the potency enhancing group and the effector group are covalently linked to different amino acid residues of the peptide.In some embodiments, the compound comprises a branching group that is at least trivalent, and the branching group is covalently linked to the potency enhancing groups, the effector group and the target binding group. In some embodiments, the compound comprises a branching group that is at least trivalent, and the branching group is covalently linked to the potency enhancing group and the target binding group. In some embodiments, the compound comprises a branching group that is at least trivalent, and the branching group is covalently linked to the effector group and the target binding group.In some embodiments, the branching group is linked to the target binding group through a linking group selected from a direct bond, a cleavable linker or a non-cleavable linker. In some embodiments, the branching group is linked to the effector group through a linking group selected from a direct bond, a cleavable linker or a non-cleavable linker. In some embodiments, the branching group is linked to the potency enhancing group through a linking group selected from a direct bond, a cleavable linker or a non-cleavable linker.In some embodiments, the potency enhancing group comprises a plasma protein binding group and / or a polyethylene glycol chain. In some embodiments, the plasma protein is selected from albumin, alpha-1-acid glycoprotein, fetuin, transferrin, IgG, HDL (high-density lipoprotein) or LDL (low-density lipoprotein) . In some embodiments, the potency enhancing groups comprises an albumin binding group.In some embodiments, the target binding group binds to a cell, optionally a cancer cell. Therefore, in some embodiments, the target binding group is a tumor binding group. In some embodiments, the target binding group binds to an antigen or other protein on a cell surface, for example a cell surface receptor.In some embodiments, the compound comprises one to four, one to three, one to two, or four, three, two or one potency enhancing groups. In some embodiments, the compound comprises one to four, one to three, one to two, or four, three, two or one effector groups.In some embodiments, the target binding group is selected from a B7 Homolog 3 (B7-H3) binding group, prostate specific membrane antigen (PSMA) binding group, a glucagon-like peptide-1 receptor (GLP-1R) binding group, a glucose-dependent insulinotropic peptide (gastric inhibitory peptide ; GIP) receptor (GIP-R) binding group, a Cholecystokinin-2 receptor (CCK2R) binding group, a gastrin releasing peptide receptor (GRPR) binding group, a somatostatin receptor 2 (SSTR2) binding group, and a neurotensin receptor 1 (NTR1) binding group, a neuropeptide Y receptor type 1 (Y1R) binding group, a nectin-4 binding group, an epithelial cell adhesion molecule (EpCAM) binding group, an insulin-like growth factor-1 (IGF-1) receptor binding group, a human epidermal growth factor receptor 2 (HER2) binding group. In some embodiments, the target binding group binds to an antigen or other protein on a cell surface, for example a cell surface receptor. In some embodiments, the target binding group is selected from a glucagon-like peptide-1 receptor (GLP-1R) binding group and a glucose-dependent insulinotropic peptide (gastric inhibitory peptide; GIP) receptor (GIP-R) binding group. In some embodiments, the target binding group is a glucagon-like peptide-1 receptor (GLP-1R) binding group. In some embodiments, the target binding group is glucose-dependent insulinotropic peptide (gastric inhibitory peptide; GIP) receptor (GIP-R) binding group. In some embodiments, the target binding group is a B7-H3 binding group.In some embodiments, each potency enhancing group is independently an albumin binding group and the target binding group is selected from a GLP-1R binding group, a GIP-R binding group, or a B7-H3 binding group.In some embodiments, the compound has an ex vivo half-life in mouse plasma at about 37℃ of about 4 hours to about 360 hours, about 6 hours to about 144 hours, about 12 hours to about 120 hours. In some embodiments, the compound has an ex vivo half-life in mouse plasma at about 37℃ of about 12 hours to about 120 hours.In some embodiments, each non-cleavable linker resists degradation and is less than 5%, less than 4%, less than 3%or less than 2%degraded in the ex vivo mouse plasma after at least about 4 hours, at least about 8 hours, at least about 12 hours, at least about 16 hours, at least about 32 hours, or at least about 48 hour following administration of the compound to mouse plasma.In some embodiments, each non-cleavable linker resists degradation and the compound is less than 5%, less than 4%, less than 3%or less than 2%degraded in the mouse plasma after at least about 8 hours, at least about 12 hours, at least about 16 hours, at least about 24 hours, or at least about 32 hour following administration of the compound to the mouse plasma.In some embodiments, each non-cleavable linker resists degradation for at least about 2 to about 8 hours, at least about 4 hours to about 16 hours, at least about 12 hours to about 24 hours, at least about 1 day to about 5 days, or at least about 5 days to about 10 days under physiological conditions.In some embodiments, each non-cleavable linker independently comprises one or more non-cleavable moieties. In some embodiments, each non-cleavable linker independently comprises one or more non-cleavable moieties that resist degradation by one or more of acids, bases, reducing agents, oxidizing agents and enzymes. In some embodiments, each non-cleavable linker independently comprises one to thirty non-cleavable moieties that resist degradation by one or more of acids, bases, reducing agents, oxidizing agents and enzymes.In some embodiments, each non-cleavable linker independently comprises one or more non-cleavable moieties that resist degradation by one or more of acids and bases. Therefore, in some embodiments, each non-cleavable linker resists degradation in the plasma. In some embodiments, each non-cleavable linker independently comprises one or more non-cleavable moieties that resist degradation in the ex vivo plasma at about 37℃ for at least about 2 to about 8 hours, at least about 4 hours to about 16 hours, at least about 12 hours to about 24 hours, at least about 1 day to about 5 days, at least about 5 days to about 10 days under or at least about 24 hours following administration of a compound comprising the group to the plasma.In some embodiments, each non-cleavable linker independently comprises one or more non-cleavable moieties that resist degradation that are selected from amine bonds, ether bonds, thioether bonds, amide bonds, urea bonds, thiourea groups, thioamide groups or triazole groups. In some embodiments, the triazole group is prepared using click chemistry.In some embodiments, each cleavable linker is degraded in ex vivo mouse plasma and have an ex vivo mouse plasma half-life of about 4 hours to about 360 hours, about 6 hours to about 144 hours, about 12 hours to about 120 hours, about 18 hours to about 108 hours, or about 24 hours to 96 at about 37℃ in mouse plasma.In some embodiments, each cleavable linker is degraded in ex vivo mouse plasma and greater than about 5%, about 6%, about 7%, about 8%, about 9%or about 10%of the cleavable linker is degraded after about 48 to about 96 hours, or about 60 to 96 hours at about 37℃ in mouse plasma.In some embodiments, each cleavable linker independently comprises one or more cleavable moieties that are degraded by one or more of acids, bases, reducing agents, oxidizing agents and enzymes.In some embodiments, each cleavable linker independently comprises one or more cleavable moieties that are degraded by enzymes.In some embodiments, the one or more cleavable moieties are independently selected from an ester group, a disulfide bond, a thioester group, a carbamate group, a carbonate group, a hydrazone bond, an oxime bond such as a ketoxime or aldoxime bond, and enzymatically cleavable peptide sequences.In some embodiments, each cleavable linker independently comprises one or more cleavable moieties that are degradable by one or more of acids and bases. Therefore, in some embodiments, each cleavable linker is independently degraded in the circulating blood and ex-vivo plasma such as mouse plasma.Accordingly, in some embodiments, each cleavable linker independently comprises at least one cleavable moiety that is cleavable in the circulating blood and ex vivo plasma. In some embodiments, each cleavable linker independently comprises one to four cleavable moieties that are cleavable in the circulating blood and ex vivo plasma. In some embodiments, each cleavable linker independently comprises one to three cleavable moieties that are cleavable in the circulating blood and ex vivo plasma. In some embodiments, each cleavable linker independently comprises one or two cleavable moieties that are cleavable in the circulating blood and ex vivo plasma. In some embodiments, each cleavable linker independently comprises one cleavable moiety that is cleavable in the circulating blood and ex vivo plasma. In some embodiments, each cleavable linker independently comprises at least one cleavable moiety that is cleavable in the ex-vivo mouse plasma and has an ex vivo mouse plasma half-life at about 37℃ of at least about 4 hours to about 360 hours, about 6 hours to about 144 hours, about 12 hours to about 120 hours, about 18 hours to about 108 hours, or about 24 hours to 96 hours following administration of the compound to the mouse plasma.In some embodiments, the compound comprises one to four cleavable linkers. In some embodiments, the compound comprises one to three cleavable linkers. In some embodiments, the compound comprises one or two cleavable linkers. In some embodiments, the compound comprises one cleavable linker.In some embodiments, the compound comprises one to four cleavable moieties. In some embodiments, the compound comprises one to three cleavable moieties. In some embodiments, the compound comprises three cleavable moieties. In some embodiments, the compound comprises two cleavable moieties. In some embodiments, the compound comprises one or two cleavable moieties. In some embodiments, the compound comprises one cleavable moiety.It would be appreciated by a person skilled in the art that the non-cleavable linkers do not comprise a cleavable moiety, while for the cleavable linkers it is an option that they can further comprise non-cleavable moieties.It would be further appreciated by a person skilled in the art that the non-cleavable and cleavable linkers comprise a functional group on each of the termini that reacts with complementary functional groups of the molecules to be linked to form a non-cleavable or cleavable covalent connection, and that for non-cleavable linkers the connections between the linker and the molecules to be joined are non-cleavable and for cleavable linkers the connections between the linker and the molecules to be joined are non-cleavable or cleavable.Further, it would be appreciated by a person skilled in the art that the branching group that is at least trivalent comprises a functional group on each termini that reacts with a complementary functional group of each of the at least three molecules to be linked. In some embodiments, the branching group that is at least trivalent comprises a functional group on each termini that reacts with a complementary functional group of the potency enhancing groups, the target binding group, and / or the effector groups when bound directly to any one of these groups, or to the non-cleavable linkers, and / or cleavable linkers.It would be further appreciated by a person skilled in the art that the branching group that is at least trivalent comprises a functional group on each terminus that connects to the potency enhancing groups, the target binding group and / or the effector groups, or to the non-cleavable linkers, and / or to the cleavable linkers through connections (e.g., functional groups) and that, when joining to the non-cleavable linkers the connections between the branching group that is at least trivalent and the non-cleavable linker are non-cleavable, and when joining to the cleavable linkers the connections between the branching group that is at least trivalent and the cleavable linkers are non-cleavable or cleavable.In some embodiments, the branching group that is at least trivalent comprises at least a first terminal functionality, a second terminal functionality and a third terminal functionality that covalently linked to a complementary functional group on each of the at least three molecules to be linked.In some embodiments, the non-cleavable linker groups and the cleavable linker groups optionally comprise functional groups, in addition to the functional groups on each of the termini, that react with complementary functional groups of additional target binding groups, potency enhancing group, effectors groups, or branching groups. In some embodiments, the non-cleavable linker or the cleavable linker further attaches to another effector group and / or potency enhancing group.Accordingly, in one aspect, provided is a compound of Formula I,whereinZ is target binding group, wherein the target binding group is a peptide;F and F' a re independently selected from A or E;each A is independentlyA1——LA;each E is independentlyE1——LE;each A1 is independently a potency enhancing group;each E1 is independently an effector group;each LA is independentlyeach LE is independentlyeach LA1, LA2, LA3, LE1, LE2, LE3 and LZ are independently selected from a direct bond, a non-cleavable linker and a cleavable linker, and the non-cleavable linkers or cleavable linkers are the same or different;each of TA, TE and T is independently a branching group that is at least trivalent, and TA, TE and T are the same or different;A2 is A1 and each A1 and A2 are the same or different;E2 is E1 and each E1 and E2 are the same or different;LZ, each A and each E are independently covalently linked to Z;a is any integer selected from 0-10, and preferably 0 or 1;b is any integer selected from 0-10, and preferably 0, 1 or 2;c b is any integer selected from 0-10, and preferably 0, 1 or 2;d is any integer selected from 0-10, and preferably 0 or 1; ande is any integer selected from 0-10, and preferably 0 or 1;provided(i) when b and c are both 0, then a is at least 1, and one or F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is at least 1, and one or both of F and F' is A, or(iii) when c is 0, then b is at least 1, and one or both of F and F' is E.In some embodiments, the compound of Formula (I) comprises at least one cleavable linker.It would be appreciated by a person skilled in the art, that when a, b, c, d and / or e is 0, it means that the corresponding group in the bracket is not present. In some embodiments, a is selected from 0 and 1. In some embodiments, b is selected from selected from 0, 1 and 2. In some embodiments, c is selected from 0, 1 or 2. In some embodiments, d is selected from 0 or 1.In some embodiments, e is selected from selected from 0 or 1.In some embodiments, LZ, each A and each E are independently covalently linked to an amino acid residue of the peptide selected from the group consisting of Lys, ornithine (Orn) , homo-lysine, 2, 3-diaminopropionic acid (Dap) , 2, 4-diaminobutyric acid (Dab) , cysteine, homo-cysteine, glutamine, glutamic acid, asparagine, aspartic acid, 3, 5-bis (aminomethyl) benzoic acid (Bab) , 4-aminomethylphenylalaline (Amp) , 4R-4-aminoproline (Apr) , 4- (2-aminoethoxy) phenylalanine, 4-aminopiperidine-4-carboxylic acid (Apc) , 2- ( (1, 3-diaminopropan-2-yl) oxy) acetic acid (Dpa) , and a D enantiomer thereof. In some embodiments, LZ, each A and each E are independently covalently linked to a lysine amino acid residue of the peptide. In some embodiments, LZ, A or E are covalently linked to the C-terminus of the peptide. In some embodiments, LZ, A or E are covalently linked to the N-terminus of the peptide. In some embodiments, LZ, A or E are covalently linked to the alpha-amino group of the amino acid residue in the N-terminus of the peptide in Z. In some embodiments, E is linked to the alpha-amino group of the amino acid residue in the N-terminus of the peptide in Z.In some embodiments, the peptide is a linear peptide. In some embodiments, the peptide comprises at least about 20, at least about 25, at least about 30, or at least about 35 amino acid residues. In some embodiments, the peptide comprises at least 20 amino acid residues. In some embodiments, the peptide comprises no more than 80 amino acids. In some embodiments, the peptide comprises about 20 to about 80, about 20 to about 70, about 20 to about 60, about 20 to about 55, about 20 to about 50, about 20 to about 45, about 20 to about 40, about 20 to about 30, about 25 to about 60, about 25 to about 50, about 25 to about 45, about 25 to about 40, about 30 to about 40 or about 35 to about 40 amino acid residues. In some embodiments, the peptide comprises about 20 to about 50, about 20 to about 45, about 20 to about 40, about 20 to about 30, about 25 to about 60, about 25 to about 50, about 25 to about 45, about 25 to about 40, about 30 to about 40 or about 35 to about 40 amino acid residues.In some embodiments, the peptide comprises one or more amino acid residues derived from naturally occurring amino acids. In some embodiments, the peptide comprises one or more amino acids derived from non-naturally occurring amino acids. In some embodiments, the amino acid residues in the peptide are derived from naturally occurring amino acids and / or non-naturally occurring amino acids.In some embodiments, the peptide comprises one or more amino acid residues derived from naturally occurring amino acids. In some embodiments, the naturally occurring amino acids include, but are not limited to, alanine (Ala, A) , arginine (Arg, R) , asparagine (Asn, N) , aspartic acid (Asp, D) , cysteine (Cys, C) , glutamine (Gln, Q) , glutamic acid (Glu, E) , γGlu glutamine (Gln) , glycine (Gly, G) , histidine (His, H) , isoleucine (Ile, I) , leucine (Leu, L) , Lysine (Lys, K) , εLysmethionine (Met, M) , phenylalanine (Phe, F) , proline (Pro, P) , serine (Ser, S) , threonine (Thr, T) , tryptophan (Trp, W) , tyrosine (Tyr, Y) , valine (Val, V) , pyrrolysine (Pyl, O) , selenocycleine (Sec) , pyrroline-carboxy-lysine (PCL) , gamma-carboxyglutamic acid (Gla) , and a D enantiomer thereof.In some embodiments, the peptide comprises one or more amino acids derived from non-naturally occurring amino acids. In some embodiments, the non-naturally occurring amino acid is selected from modified amino acids, β-amino acids, γ-amino acids, homo amino acids, N-methyl amino acids, alpha-methyl amino acids, des-amino amino acids, and D enantiomer of the naturally occurring amino acids or the modified amino acids.In some embodiments, the non-naturally occurring amino acid residue in the peptide is derived from a modified amino acid. In some embodiments, the modified amino acid is selected from, but not limited to, hydroxyproline (Hyp) , γ-carboxyglutamate, O-phosphoserine, azetidinecarboxylic acid, 2-aminoadipic acid, 3-aminoadipic acid, beta-alanine, aminopropionic acid, 2-aminobutyric acid, 4-aminobutyric acid (Abu) , 6-aminocaproic acid, 2-aminoheptanoic acid, 2-aminoisobutyric acid (Aib) , 3-aminoisobutyric acid, 2-aminopimelic acid, tertiary-butylglycine, 2, 4-diaminoisobutyric acid, desmosine, 2, 2′-diaminopimelic acid, 2, 3-diaminoproprionic acid, N-ethylglycine, N-methylglycine, N-ethylasparagine, homoproline, hydroxylysine, allo-hydroxylysine, 3-hydroxyproline, 4-hydroxyproline, isodesmosine, allo-isoleucine, N-methylalanine, N-methylglycine, N-methylisoleucine, N-methylpentylglycine, N-methylvaline, naphthalanine (Nal) , norvaline, norleucine (Nle) , ornithine (Orn) , pentylglycine, pipecolic acid, thioproline, 3-nitrotyrosine, nitroarginine, 2, 4-diaminobutyric acid (DAB) , 2, 3-diaminopropionic acid (DAP) , methionine sulfoxide, methionine sulfone NR5C5alkyleneC (O) (Ahx) , L-Cysteic acid (Cya) , norleucine (Nle) , norvaline (Nva) , 2-aminooctanoic acid (Aoc) , 2-naphthylalanine (2-Nal) , 3- (trifluoromethyl) phenylalanine (TFP) , homophenylalanine (hPhe) , cyclohexylalanine (Cha) , 1-naphthylalanine (1-Nal) , 4-benzoyl-L-phenylalanine (Bpa) , 2-methoxy-4-vinylphenylalanine (MvF) , 4-fluorophenylalanine (4-F-Phe) , 4-phenyl-2, 3-dihydroxy-6-nitrophenylalanine (pNIPA) , 2- (2-naphthyl) alanine (2-Nal-ala) , 4- (4-propoxyphenyl) alanine (Ppa) , 4-carboxyphenylalanine (4-CPA) , 4-butylphenylalanine (Bua) , 2-nitrophenylalanine (2-Npa) , 4-azidophenylalanine (4-AzF) , 2- (4-nitrophenyl) ethylalanine (2-Npe) , 3-iodo-L-tyrosine (Ity) , and 5, 5, 5-trifluoroleucine (TFL) .In some embodiments, the non-naturally occurring amino acid is a D enantiomer of the naturally occurring amino acids or the modified amino acids.In some embodiments, Z is a target binding group as defined above. In exemplary embodiments, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group and / or a glucose-dependent insulinotropic peptide receptor (GIP-R) binding group. In some embodiments, Z is glucagon-like peptide-1 receptor (GLP-1R) binding group. In some embodiments, Z is glucose-dependent insulinotropic peptide receptor (GIP-R) binding group. In some embodiments, the glucose-dependent insulinotropic peptide receptor is also known as the gastric inhibitory peptide receptor. In some embodiments, Z is a GIP analogue. In some embodiments, Z is a GLP-1 analogue.In some embodiments, Z is a B7-H3 binding group.In some embodiments, Z is a compound comprising a peptide encoded by an amino acid sequence comprising or consisting of any of SEQ ID NOs: 4-30 or a conservatively substituted variant thereof. In some embodiments, Z is a compound comprising a peptide encoded by an amino acid sequence comprising or consisting of a sequence with at least 75%, 80%, 85%, 90%, 95%or 99%sequence identity to any of SEQ ID NOs: 4-30 or a conservatively substituted variant thereof. In some embodiments, Z is a compound comprising a peptide encoded by an amino acid sequence comprising or consisting of any of SEQ ID NOs: 32-46. In some embodiments, Z is a compound comprising a peptide encoded by an amino acid sequence comprising or consisting of a sequence with at least 75%, 80%, 85%, 90%, 95%or 99%sequence identity to any of SEQ ID NOs: 32-46 or a conservatively substituted variant thereof.In exemplary embodiments, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group, a glucose-dependent insulinotropic peptide receptor (GIP-R) binding group, or a B7-H3 binding group, and the compound of Formula I is a compound of Formula I-A,whereinZGIP / GLP / B7H3 is a glucagon-like peptide-1 receptor (GLP-1R) binding group, a glucose-dependent insulinotropic peptide receptor (GIPR) binding group, and / or a B7-H3 binding group;F, F', A, T, E, LZ, a, b and c are as defined in Formula (I)provided(i) when b and c are both 0, then a is 1, and one or F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is 1, and one or both of F and F' is A, or(iii) when c is 0, then b is 1, and one or both of F and F' is E.In some embodiments, the compound of Formula I-A comprises at least one cleavable linker.In some embodiments, Z is a GIP-R binding group and the compound of Formula I is a compound of Formula I-A (A) ,whereinZGIP is glucose-dependent insulinotropic peptide receptor (GIP-R) binding group; andF, F', A, E, LZ, a, b and c are as defined in Formula (I)provided(i) when b and c are both 0, then a is 1, and one or F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is 1, and one or both of F and F' is A, or(iii) when c is 0, then b is 1, and one or both of F and F' is E.In some embodiments, the compound of Formula I-A (A) comprises at least one cleavable linker.In some embodiments, the GIP-R binding group is a GIP analogue. In some embodiments, the GIP-R is a human GIP analogue.In some embodiments, the GIP-R target binding group in Z comprises or consists of an amino acid sequence of:Xa1Xa2EGT FXa7SDY SIAXa14D Xa16 Xa17Xa18 Xa19Xa20 Xa21FXa23NW LL Xa28Xa29 (SEQ ID NO. 4) .wherein:Xa1 is selected from histidine (His) , tyrosine (Tyr) , D-Tyr, Phe, des-amino histidine, and des-amino tyrosine.Xa2 is selected from alanine (Ala) , D-Ala and 2-aminoisobutyric acid (Aib) ;Xa7 is selected from threonine (Thr) and isoleucine (Ile)Xa14 is selected from norleucine (Nle) , methionine (Met) and leucine (Leu) ;Xa16 is lysine (Lys) , (Serine) Ser, Thr, His, Aib, arginine (Arg) and (glutamic acid) Glu;Xa17 is glutamine (Gln) and (isoleucine) Ile;Xa18 is selected from Arg and His;Xa19 is Gln and Ala;Xa20 is selected from Gln, Aib, His, Arg and Lys;Xa21 is selected from aspartic acid (Asp) , Lys, Glu, Thr, Ala;Xa23 is selected from valine (Val) , Ile, Leu, (phenylalanine) Phe and Lys;Xa28 is selected from Glu, Ser and Ala;Xa29 is selected from Gln, glycine (Gly) , Ala and Lys.In some embodiments, the GIP-R binding group in Z comprises or consists of an amino acid sequence of:Xa1Xa2EGT FXa7SDY SIAXa14D Xa16 Xa17Xa18 Xa19Xa20 Xa21FXa23NW LL Xa28Xa29 Xa30Xa31Xa32Xa33G Xa35 Xa36 Xa37 Xa38 Xa39Xa40 (SEQ ID NO. 5) .wherein:Xa1 is selected from histidine (His) , tyrosine (Tyr) , D-Tyr, Phe, des-amino histidine, and des-amino tyrosine.Xa2 is selected from alanine (Ala) , D-Ala and 2-aminoisobutyric acid (Aib) ;Xa7 is selected from threonine (Thr) and isoleucine (Ile) ;Xa14 is selected from norleucine (Nle) , methionine (Met) and leucine (Leu) ;Xa16 is lysine (Lys) , serine (Ser) , Thr, His, Aib, arginine (Arg) and glutamic acid (Glu) ;Xa17 is glutamine (Gln) and Ile;Xa18 is selected from Arg and His;Xa19 is Gln and Ala;Xa20 is selected from Gln, Aib, His, Arg and Lys;Xa21 is selected from aspartic acid (Asp) , Lys, Glu, Thr and Ala;Xa23 is selected from valine (Val) , Ile, leucine (Leu) , phenylalanine (Phe) and Lys;Xa28 is selected from Glu, Ser and Ala;Xa29 is selected from Gln, glycine (Gly) , Ala and Lys.Xa30 is selected from Gly, Ser, D-Ser, and Lys;Xa31 is selected from proline (Pro) , and D-Pro;Xa32 is selected from Ser, Glu, and D-Ser;Xa33 is selected from Ser, Glu, and D-Ser;Xa35 is selected from Ala, Ser, Glu, and D-Ala;Xa36 is selected from Pro, and D-Pro;Xa37 is selected from Pro, and D-Pro;Xa38 is selected from Pro, and D-Pro;Xa39 is selected from Ser, Glu, or D-Ser; andXa40 is absent or is Lys.In some embodiments, Xa1 is selected from His, Tyr, D-Tyr, Phe, des-amino histidine, and des-amino tyrosine, Xa2 is selected from Ala, D-Ala and Aib, Xa14 is selected from Nle, Met and Leu, Xa16 is selected from Lys, Ser, Thr, His, Aib, Arg and Glu, Xa18 is selected from Arg and His, Xa20 is selected from Gln, Aib, His, Arg and Lys; , Xa21 is selected from Asp, Lys, Glu, Thr, Ala; Xa23 is selected from Val, Ile, Leu, Phe and Lys; Xa29 is selected from Gln, Gly, Ala and Lys, Xa30 is selected from Gly, Ser, D-Ser, and Lys, and Xa40 is absent or is Lys. In some embodiments, Xa21 is Lys and Xa40 is absent or is Lys.In some embodiments, LZ, each A and each E are independently covalently linked to a lysine amino acid residue in ZGIP. In some embodiments, LZ, each A and each E are independently covalently linked to an amino acid residue in ZGIP selected from Xa16, Xa18, Xa20, Xa21, Xa23, Xa29, Xa30, and Xa40. In some embodiments, LZ or A are covalently linked to Xa21 in ZGIP and E is covalently linked to Xa40. In some embodiments, LZ or A are covalently linked to Xa21 in ZGIP and E is covalently linked to Xa40, and Xa21 and Xa40 are both lysine. In some embodiments, LZ is covalently linked Xa21, Xa21 is lysine and Xa40is absent.In some embodiments, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group and the compound of Formula I is a compound of Formula I-A (B) ,whereinZGLP is glucagon-like peptide-1 receptor (GLP-1R) target binding group ; andF, F', A, E, LZ, a, b and c are as defined in Formula (I)provided(i) when b and c are both 0, then a is 1, and one or F and F' is A and the other of F and F' is E; (ii) when b is 0, then a is 1, and one or both of F and F' is A, or(iii) when c is 0, then b is 1, and one or both of F and F' is E.In some embodiments, the compound of Formula I-A (B) comprises at least one cleavable linker.In some embodiments, the GLP-1R binding group in Z is a GLP-1 analogue. In some embodiments, the GLP-1R binding group in Z is a human GLP-1 analogue.In some embodiments, the GLP-1R binding group in Z comprises or consists of a sequence of:Xb1Xb2EGT FTSDXb10 SXb12Xb13Xb14E X16Xb17Xb18AX20 Xb21FXb23AW L Xb27X28Xb29 (SEQ ID NO. 6) .wherein:Xb1 is selected from alanine (Ala) , glycine (Gly) , histidine (His) , valine (Val) , Leucine (Leu) , isoleucine (Ile) , threonine (Thr) , and serine (Ser) ;Xb2 is selected from Ala, D-Ala and Aib;Xb10 is selected from Val and Leu;Xb12 is selected from Ser, lysine (Lys) and arginine (Arg) ;Xb13 is selected from tyrosine (Tyr) and glutamine (Gln) ;Xb14 is selected from Leu, Nle and methionine (Met) ;Xb16 is selected from glutamic acid (Glu) , Ser, Thr, His, Aib, Arg and Lys;Xb17 is selected from Gln, Glu and Arg;Xb18 is selected from Ala and Val;Xb20 is selected from Gln and Lys;Xb21 is selected from Glu, Asp and Leu;Xb23 is selected from Ile, Val, Leu and Phe;Xb27 is selected from Val and Lys;Xb28 is Lys; andXb29 is Gly.In some embodiments, the GLP-1R binding group comprises or consists of an amino acid sequence of:Xb1Xb2EGT FTSDXb10 SXb12Xb13Xb14E X16Xb17Xb18AX20 Xb21FXb23AW L Xb27X28Xb29Xb30 Xb31Xb32Xb33G Xb35 Xb36 Xb37 Xb38 Xb39Xb40 (SEQ ID NO. 7) .wherein:Xb1 is selected from Ala, Gly, His, Val, Leu, Ile, Thr, Ser and Aib;Xb2 is selected from Ala, D-Ala and Aib;Xb10 is selected from Val and Leu;Xb12 is selected from Ser, Lys and Arg;Xb13 is selected from Tyr and Gln;Xb14 is selected from Leu, Nle and Met;Xb16 is selected from Glu and Lys;Xb17 is selected from Gln, Glu and Arg;Xb18 is selected from Ala and Val;Xb20 is selected from Gln and Lys;Xb21 is selected from Glu and Leu;Xb23 is Ile;Xb27 is selected from Val and Lys;Xb28 is Lys;Xb29 is Gly;Xb30 is selected from Gly, and Lys;Xb31 is selected from Pro, and D-Pro;Xb32 is selected from Ser, Glu, and D-Ser;Xb33 is selected from Ser, Glu, and D-Ser;Xb35 is selected from Ala, Ser, Glu, and D-Ala;Xb36 is selected from Pro, and D-Pro;Xb37 is selected from Pro, and D-Pro;Xb38 is selected from Pro, and D-Pro;Xb39 is selected from Ser, Glu, and D-Ser; andXb40 is absent or Lys.In some embodiments, LZ, each A and each E are independently covalently linked to a lysine amino acid residue in ZGLP. In some embodiments, LZ, each A and each E are independently covalently linked to an amino acid residue in ZGLP selected from Xb16, Xb20, Xb21, Xb23, Xb28, Xb29, Xb30, or Xb40. In some embodiments, LZ or A is covalently linked to Xb28 in ZGLP and E is covalently linked to Xb40. In some embodiments, LZ or A are covalently linked to Xb28 in ZGLP. In some embodiments, LZ or T is covalently linked to Xb28 in ZGLP and Xb40 is absent. In some embodiments, LZ or A is covalently linked to an amino acid residue in ZGLP selected from Xb20 and Xb40.In some embodiments, Z is a B7-H3 binding group and the compound of Formula I is a compound of Formula I-A (C) ,whereinZB7H3 is B7-H3 target binding group ; andF, F', A, E, LZ, a, b and c are as defined in Formula (I)provided(i) when b and c are both 0, then a is 1, and one or F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is 1, and one or both of F and F' is A, or(iii) when c is 0, then b is 1, and one or both of F and F' is E.In some embodiments, the compound of Formula I-A (C) comprises at least one cleavable linker.In some embodiments, the B7-H3 binding group in Z comprises or consists of a sequence of:AEAKXc5 AKEKI Xc11ALXc14E IIWLP NLTXc19Xc20 QIXc23AF IAXc28LN DDPSQ SSELL SEAKK LXc47Xc48SQ Xc51Xc52Xc53Xc54Xc55 (SEQ ID NO. 27) ,whereinXc5 is selected from Phe or Tyr;Xc11 is selected from Lys, Asn or Ala;Xc14 is selected from Ser or Gly;Xc19 is selected from Tyr or His;Xc20 is selected from Gly or Asp;Xc23 is selected from Lys or Met;Xc28 is selected from Lys or Ala;Xc47 is selected from Ser or Asn;Xc48 is selected from Glu or Asp;Xc51 is selected from null or Gly;Xc52 is selected from null or Gly;Xc53 is selected from null or Gly;Xc54 is selected from Cys or Lys; andXc55 is selected from null or Ala.In some embodiments of Formula I-A (C) , b and c are 0, a is 1, and LZ is covalently linked to Xc54 of ZB7H3. In some embodiments, Xc54 is Cys, and LZ comprises a structure selected from the group consisting ofIn some embodiments of the compound of Formula (I) , each of A1 or A2 independently comprises one or more plasma protein binding groups. In some embodiments, the plasma protein is selected from the group consisting of albumin, alpha-1-acid glycoprotein, fetuin, transferrin, IgG, HDL (high-density lipoprotein) and LDL (low-density lipoprotein) .In some embodiments, A1 or A2 independently comprises one or more albumin binding groups. In some embodiments, A1 or A2 independently comprises a polyethylene glycol chain.In some embodiments, each of A1 and A2 independently comprises one or more albumin binding groups. Any suitable albumin binding group known in the art can be used in the present application. In some embodiments, the albumin binding group is selected from the group consisting of unsubstituted or substituted C (O) C1-26alkyleneCOOH, unsubstituted or substituted C (O) C1-26alkenyleneCOOH, unsubstituted or substituted C (O) C1-26alkyl, and unsubstituted or substituted C (O) C1-26alkenyl. In some embodiments, the albumin binding groups is selected from the group consisting of unsubstituted or substituted C (O) C6-20alkyleneCOOH, and unsubstituted or substituted C (O) C7-21alkyl. In some embodiments, the albumin binding group is selected from the group consisting of C (O) C7alkyl, C (O) C8alkyl, C (O) C9alkyl, C (O) C10alkyl, C (O) C11alkyl, C (O) C12alkyl, C (O) C13alkyl, C (O) C14alkyl, C (O) C15alkyl, C (O) C16alkyl, C (O) C17alkyl, C (O) C18alkyl, C (O) C19alkyl, C (O) C20alkyl, C (O) C21alkyl, C (O) C6alkyleneCOOH, C (O) C7alkyleneCOOH, C (O) C8alkyleneCOOH, C (O) C9alkyleneCOOH, C (O) C10alkyleneCOOH, C (O) C11alkyleneCOOH, C (O) C12alkyleneCOOH, C (O) C13alkyleneCOOH, C (O) C14alkyleneCOOH, C (O) C15alkyleneCOOH, C (O) C16alkyleneCOOH, C (O) C17alkyleneCOOH, C (O) C18alkyleneCOOH, C (O) C19alkyleneCOOH, and C (O) C20alkyleneCOOH. In some embodiments, the albumin binding group is selected from the group consisting of C (O) C14alkyleneCOOH, C (O) C16alkyleneCOOH, and C (O) C18alkyleneCOOH.In some embodiments, the albumin binding group is an unsubstituted or substituted fatty acid moiety. In some embodiments, the fatty acid moiety is a fatty monoacid moiety or a fatty diacid moiety. In some embodiments, the albumin binding group is selected from the group consisting of CH3- (CH2) M1-CO-and COOH- (CH2) N1-CO-, wherein each of M1 and N1 is independently selected from an integer of 6-22. In some embodiments, the albumin binding group is COOH- (CH2) N1-CO-, wherein N1 is an integer of 6-22. In some embodiments, the albumin binding group is COOH- (CH2) N1-CO-, wherein N1 is an integer of 6-18. In some embodiments, the albumin binding group is COOH- (CH2) N1-CO-, wherein N1 is an integer of 10-18. In some embodiments, the albumin binding group is COOH- (CH2) N1-CO-, wherein N1 is an integer of 6-12. In some embodiments, the albumin binding group is COOH- (CH2) N1-CO-, wherein N1 is an integer of 14-18. In some embodiments, the albumin binding group is selected from the group consisting of COOH- (CH2) 6-CO-, COOH- (CH2) 7-CO-, COOH- (CH2) 8-CO-, COOH- (CH2) 9-CO-, COOH- (CH2) 10-CO-, COOH- (CH2) 11-CO-, COOH- (CH2) 12-CO-, COOH- (CH2) 13-CO-, COOH- (CH2) 14-CO-, COOH- (CH2) 15-CO-, COOH- (CH2) 16-CO-, COOH- (CH2) 17-CO-, COOH- (CH2) 18-CO-, COOH- (CH2) 19-CO-, COOH- (CH2) 20-CO-, COOH- (CH2) 21-CO-, and COOH- (CH2) 22-CO-. In some embodiments, the albumin binding group is COOH- (CH2) 16-CO-or COOH- (CH2) 18-CO.Additional exemplary albumin binding group that can be used in the present application includes but is not limited to a myristic acid, a substituted or unsubstituted indole-2-carboxylic acid, a substituted or unsubstituted thioamide, a substituted or unsubstituted 4-oxo-4- (5, 6, 7, 8-tetrahydronaphthalen-2-yl) butanoic acid, a substituted or unsubstituted naphthalene acylsulfonamide, a substituted or unsubstituted diphenylcyclohexanol phosphate ester, a substituted or unsubstituted 4-iodophenylalkanoic acid, a substituted or unsubstituted 3- (4-iodophenyl) propionic acid, a substituted or unsubstituted 2- (4-iodophenyl) acetic acid, or a substituted or unsubstituted 4- (4-iodophenyl) butanoic acid.In some embodiments, the albumin binding group comprises a structure ofwherein Rx is selected from the group consisting ofand wherein n is any integer ranging from 1 to 6,each of Rx1, Rx2, Rx3, Rx4, Rx5, Rx6, and Rx7 is independently selected from the group consisting of H, N, SH, OH, halogen, a C5-20 aryl group, a C1-20 alkyl group, a C2-20 alkenyl group, and a C2-20 alkynyl group. In some embodiments, the C5-20 aryl group, C1-20 alkyl group, C2-20 alkenyl group or the C2-20 alkynyl group can be unsubstituted or substituted by one or more substituents selected from the group consisting of N, S, O, Se, P, and halogen atom. In some embodiments, 0, 1 or 2 carbon atoms of the C5-20 aryl group, C1-20 alkyl group, C2-20 alkenyl group or the C2-20 alkynyl group can be replaced by any group selected from the group consisting of C6-10 arylene, 5 to 10 membered heteroarylene group, C3-7 carbocyclylen, or 5 to 10 membered heterocyclylene group, and wherein the arylene, heteroarylene, carbocyclylene and heterocyclylene groups are unsubstituted or substituted by one or more substituents selected from the group consisting of N, S, O, Se, P, halogen, C1-6 alkyl, C1-6 alkoxy, C1-6 alkylthiol, -N (C1-6 alkyl) (C1-6 alkyl) , nitro and sulfonic acid groups. In some embodiments, 0, 1 or 2 -CH-or -CH2-groups of the C5-20 aryl group, C1-20 alkyl group, C2-20 alkenyl group or the C2-20 alkynyl group can be replaced by any group selected -O-, -S-, -S-S-, -C (O) -or -N (C1-6 alkyl) -group.In some embodiments, the albumin binding group comprises a structure ofwherein Ryis selected from the group consisting of H, F, Cl, Br, I, -CH3, -OCH3, COOH, and -CF3, and n is any integer ranging from 1 to 6.In some embodiments, the albumin binding group is selected from the group consisting of :and.In some embodiments, the albumin binding group is selected fromunsubstituted or substituted C (O) C6-20alkyleneCO2H, unsubstituted or substituted C (O) C6-20alkenyleneCO2H, unsubstituted or substituted C (O) C6-18alkyl and unsubstituted or substituted C (O) C2-20alkenyl, and any combination thereof. In some embodiments, the albumin binding group is selected from 2-Naph-SO2NH-SA, 4-pIBA, unsubstituted or substituted C (O) C10-20alkyleneCO2H, unsubstituted or substituted C (O) C10-20alkenyleneCO2H, unsubstituted or substituted C (O) C10-20alkyl and unsubstituted or substituted C (O) C10-20alkenyl, and any combination thereof.In some embodiments, the albumin binding group is selected from 2-2-Naph-SO2NH-SA, 4-pIBA, unsubstituted or substituted C (O) C12-18alkyleneCO2H and unsubstituted or substituted C (O) C12-18alkenyleneCO2H, unsubstituted or substituted C (O) C12-19alkyl and unsubstituted or substituted C (O) C12-18alkenyl, and any combination thereof.In some embodiments, the albumin binding group is selected from SO2NH-Su, 4-pIBA, unsubstituted or substituted C (O) C12-18alkyleneCO2H and unsubstituted or substituted C (O) C12-18alkenyleneCO2H, unsubstituted or substituted C (O) C12-18alkyl and unsubstituted or substituted C (O) C12-18alkenyl, and any combination thereof.In some embodiments, the albumin binding group is selected from 4-pIBA, unsubstituted or substituted C (O) C14-18alkyleneCO2H and unsubstituted or substituted C (O) C14-18alkyl, and any combination thereof.In some embodiments, the albumin binding group is selected from 4-pIBA C (O) C9alkylC (O) C11alkyl C (O) C13alkylunsubstituted or substituted C (O) C15alkyl unsubstituted or substituted C (O) C17alkyl unsubstituted or substituted C (O) C12alkyleneCO2H , unsubstituted or substituted C (O) C14alkyleneCO2Hunsubstituted or substituted C (O) C16alkyleneCO2H and, unsubstituted or substituted C (O) C18alkyleneCO2Hand any combination thereof.In some embodiments, the albumin binding group is selected from 4-pIBA, unsubstituted or substituted C (O) C15alkyl, unsubstituted or substituted C (O) C16alkyleneCO2H and, unsubstituted or substituted C (O) C18alkyleneCO2H, and any combination thereof.In some embodiments, the albumin binding group is selected from unsubstituted or substituted C (O) C16alkyleneCO2H and unsubstituted or substituted C (O) C18alkyleneCO2H, and any combination thereof.In some embodiments, the albumin binding group is selected from 4-pIBA, C (O) C15alkyl, C (O) C16alkyleneCO2H and C (O) C18alkyleneCO2H, or any combination thereof.In some embodiments, the albumin binding group is selected from C (O) C16alkyleneCO2H and C (O) C18alkyleneCO2H, and a combination thereof. In some embodiments, the albumin binding group is C (O) C16alkyleneCO2H. In some embodiments, the albumin binding group is C (O) C18alkyleneCO2H.In some embodiments, when substituted each C (O) C6-20alkyleneCO2H, C (O) C6-20alkenyleneCO2H, C (O) C6-18alkyl and C (O) C2-20alkenyl is substituted with one or more of halo, CO2H, CO2C1-C4alkyl, C (O) NH2, C (O) N (CH3) 2, C (O) NHC1-C4alkyl, SO2C1-C4alkyl, C1-C4alkyl, C1-C4fluoralkyl, C2-C6alkenyl, C2-C6fluoroalkenyl, C2-C6alkynyl, C2-C6fluoroalkynyl, C3-C6cycloalkyl and a 3-to 6-membered heterocyclic ring including 1 to 2 ring members selected from O, S, S (O) , SO2, N, NH and NCH3.In some embodiments, the present inventors have found that compounds of Formula I comprising C (O) C12-18alkyleneCO2H including C (O) C16alkyleneCO2H and C (O) C18alkyleneCO2H as the albumin binding group demonstrate a higher tumor to kidney uptake ratio. Therefore, in an exemplary embodiment, each A1 is independently selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H.Accordingly, in some embodiments, the compound of Formula I is a compound of Formula I (C)whereinZ, F, F', T, E, LZ, a, b and c are as defined in Formula I;each A is independentlyandk is an integer from 10 to 20,provided(i) when b and c are both 0, then a is at least 1, and one or F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is at least 1, and one or both of F and F' is A, or(iii) when c is 0, then b is at least 1, and one or both of F and F' is E.In some embodiments, the compound of Formula I (C) comprises at least one cleavable linker.In some embodiments, in the compound of Formula I (C) , is a GIP-R binding group GLP-1R binding group, and / or a B7-H3 binding group, and the compound of Formula I (C) is a compound of Formula I-A (C) , a compound of Formula I-A (A) (C) , Formula I-A (B) (C) or Formula I-A (C) (C) ,whereinZGIP / GLP is as defined in Formula I-A;ZGIP is as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;F, F' , T, E, LZ, a, b and c are as defined in Formula (I) ;each A is independentlyandk is an integer from 10 to 20,provided(i) when b and c are both 0, then a is at least 1, and one or F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is at least 1, and one or both of F and F' is A, or(iii) when c is 0, then b is at least 1, and one or both of F and F' is E.In some embodiments, the compound of Formula I-A (C) , Formula I-A (A) (C) , Formula I-A (B) (C) or Formula I-A (C) (C) comprises at least one cleavable linker.In some embodiments, k is 14 to 18. In some embodiments, k is 16 to 18. In some embodiments, k is 16 or 18.In some embodiment, each E1 is independently an effector group comprising a moiety selected from a chemotherapeutic agent, a toxin, an immunomodulator, a diagnostic agent, a radionuclide and a chelating group.In some embodiments, E1 is a chemotherapeutic agent useful in the treatment of cancer. Examples of chemotherapeutic agents include Erlotinib (Genentech / OSI Pharm.) , Bortezomib (Millennium Pharm.) , Fulvestrant (Astrazeneca) , Sutent (SUl 1248, Pfizer) , Letrozole (Novartis) , Imatinib mesylate (Novartis) , PTK787 / ZK 222584 (Novartis) , Oxaliplatin (Sanofi) , 5-FU (5-fluorouracil) , Leucovorin, Rapamycin (Sirolimus, Wyeth) , Lapatinib (GSK572016, GlaxoSmithKline) , Lonafarnib (SCH 66336) , Sorafenib (BAY43-9006, Bayer Labs.) , and Gefitinib (Astrazeneca) , AG1478, AG1571 (SU 5271; Sugen) , alkylating agents such as Thiotepa andcyclosphosphamide; alkyl sulfonates such as busulfan, improsulfan and piposulfan; aziridines such as benzodopa, carboquone, meturedopa, and uredopa; ethylenimines and methylamelamines including altretamine, triethylenemelamine, triethylenephosphoramide, triethylenethiophosphoramide and trimethylomelamine; acetogenins; a camptothecin (including the synthetic analogue topotecan) ; bryostatin; callystatin; CC-1065 (including its adozelesin, carzelesin and bizelesin synthetic analogues) ; cryptophycins (particularly cryptophycin 1 and cryptophycin 8) ; dolastatin; duocarmycin (including the synthetic analogues, KW-2189 and CB1-TM1) ; eleutherobin; pancratistatin; a sarcodictyin; spongistatin; nitrogen mustards such as chlorambucil, chlornaphazine, cholophosphamide, estramustine, ifosfamide, mechlorethamine, mechlorethamine oxide hydrochloride, melphalan, novembichin, phenesterine, prednimustine, trofosfamide, uracil mustard; nitrosureas such as carmustine, chlorozotocin, fotemustine, lomustine, nimustine, and ranimnustine; antibiotics such as the enediyne antibiotics (e.g., calicheamicin, especially calicheamicin gammall and calicheamicin omegall; dynemicin, including dynemicin A; bisphosphonates, such as clodronate; an esperamicin; as well as neocarzinostatin chromophore and related chromoprotein enediyne antibiotic chromophores) , aclacinomysins, actinomycin, anthramycin, azaserine, bleomycins, cactinomycin, carabicin, carminomycin, carzinophilin, chromomycinis, dactinomycin, daunorubicin, detorubicin, 6-diazo-5-oxo-L-norleucine,doxorubicin (including morpholino-doxorubicin, cyanomorpholino-doxorubicin, 2-pyrrolino-doxorubicin and deoxydoxorubicin) , epirubicin, esorubicin, idarubicin, marcellomycin, mitomycins such as mitomycin C, mycophenolic acid, nogalamycin, olivomycins, peplomycin, potfiromycin, puromycin, quelamycin, rodorubicin, streptonigrin, streptozocin, tubercidin, ubenimex, zinostatin, zorubicin; anti-metabolites such as methotrexate and 5-fluorouracil (5-FU) ; folic acid analogues such as denopterin, methotrexate, pteropterin, trimetrexate; purine analogs such as fludarabine, 6-mercaptopurine, thiamiprine, thioguanine; pyrimidine analogs such as ancitabine, azacitidine, 6-azauridine, carmofur, cytarabine, dideoxyuridine, doxifluridine, enocitabine, floxuridine; androgens such as calusterone, dromostanolone propionate, epitiostanol, mepitiostane, testolactone; anti-adrenals such as aminoglutethimide, mitotane, trilostane; folic acid replenisher such as frolinic acid; aceglatone; aldophosphamide glycoside; aminolevulinic acid; eniluracil; amsacrine; bestrabucil; bisantrene; edatraxate; defofamine; demecolcine; diaziquone; elfornithine; elliptinium acetate; an epothilone; etoglucid; gallium nitrate; hydroxyurea; lentinan; lonidainine; maytansinoids such as maytansine and ansamitocins; mitoguazone; mitoxantrone; mopidanmol; nitraerine; pentostatin; phenamet; pirarubicin; losoxantrone; podophyllinic acid; 2-ethylhydrazide; procarbazine; polysaccharide complex (JHS Natural Products, Eugene, OR) ; razoxane; rhizoxin; sizofiran; spirogermanium; tenuazonic acid; triaziquone; 2,2', 2"-trichlorotriethylamine; trichothecenes (especially T-2 toxin, verracurin A, roridin A and anguidine) ; urethan; vindesine; dacarbazine; mannomustine; mitobronitol; mitolactol; pipobroman; gacytosine; arabinoside ("Ara-C") ; cyclophosphamide; thiotepa; taxoids, e.g., paclitaxel (Bristol-Myers Squibb Oncology, Princeton, N.J.) , ABRAXANETM Cremophor-free, albumin-engineered nanoparticle formulation of paclitaxel (American Pharmaceutical Partners, Schaumberg, Illinois) , anddoxetaxel (Rhone-Poulenc Rorer, Antony, France) ; chloranbucil; gemcitabine; 6-thioguanine; mercaptopurine; methotrexate; platinum analogs such as cisplatin and carboplatin; vinblastine; platinum; etoposide (VP-16) ; ifosfamide; mitoxantrone; vincristine; vinorelbine; novantrone; teniposide; edatrexate; daunomycin; aminopterin; xeloda; ibandronate; CPT-11; topoisomerase inhibitor RFS 2000; difluorometlhylornithine (DMFO) ; retinoids such as retinoic acid; capecitabine; and pharmaceutically acceptable salts, acids or derivatives of any of the above.In some embodiments, the chemotherapeutic agent also includes but is not limited to (i) anti-hormonal agents that act to regulate or inhibit hormone action on tumors such as anti-estrogens and selective estrogen receptor modulators (SERMs) , including, for example, tamoxifen (includingtamoxifen) , raloxifene, droloxifene, 4-hydroxytamoxifen, trioxifene, keoxifene, LY117018, onapristone, and FARESTON-toremifene; (ii) aromatase inhibitors that inhibit the enzyme aromatase, which regulates estrogen production in the adrenal glands, such as, for example, 4 (5) -imidazoles, aminoglutethimide, megestrol acetate, exemestane, formestanie, fadrozole, vorozole, letrozole, andanastrozole; (iii) anti-androgens such as flutamide, nilutamide, bicalutamide, leuprolide, and goserelin; as well as troxacitabine (a 1, 3-dioxolane nucleoside cytosine analog) ; (iv) aromatase inhibitors; (v) protein kinase inhibitors; (vi) lipid kinase inhibitors; (vii) antisense oligonucleotides, particularly those which inhibit expression of genes in signaling pathways implicated in abherant cell proliferation, such as, for example, PKC-alpha, Ralf and H-Ras; (viii) ribozymes such as a VEGF expression inhibitor (e.g., ribozyme) and a HER2 expression inhibitor; (ix) vaccines such as gene therapy vaccines, for example, vaccine, vaccine, andvaccine; rIL-2; topoisomerase 1 inhibitor; rmRH; (x) anti-angiogenic agents such as bevacizumab (Genentech) ; and (xi) pharmaceutically acceptable salts, acids or derivatives of any of the above.In some embodiments, E1 comprises a cytokine. The term “cytokine” is a generic term for proteins released by one cell population which act on another cell as intercellular mediators. Examples of such cytokines are lymphokines, monokines, and traditional polypeptide hormones. Included among the cytokines are growth hormone such as human growth hormone, N-methionyl human growth hormone, and bovine growth hormone; parathyroid hormone; thyroxine; insulin; proinsulin; relaxin; prorelaxin; glycoprotein hormones such as follicle stimulating hormone (FSH) , thyroid stimulating hormone (TSH) , and luteinizing hormone (LH) ; hepatic growth factor; fibroblast growth factor; prolactin; placental lactogen; tumor necrosis factor-a and -β; mullerian-inhibiting substance; mouse gonadotropin-associated peptide; inhibin; activin; vascular endothelial growth factor; integrin; thrombopoietin (TPO) ; nerve growth factors such as NGF-β; platelet-growth factor; transforming growth factors (TGFs) such as TGF-a and TGF-β; insulin-like growth factor-I and -II; erythropoietin (EPO) ; osteoinductive factors; interferons such as interferon-a, -β, and -γ; colony stimulating factors (CSFs) such as macrophage-CSF (M-CSF) ; granulocyte-macrophage-CSF (GM-CSF) ; and granulocyte-CSF (G-CSF) ; interleukins (ILs) such as IL-1, IL-la, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12; a tumor necrosis factor such as TNF-a or TNF-β; and other polypeptide factors including LIF and kit ligand (KL) .In some embodiments, E1 comprises a radionuclide. In some embodiments, the radionuclide is selected from the group consisting of 11C, 13N, 14C, 15O, 18F, 75Br, 76Br, 77Br, 123I, 124I, 125I, 131I, 35S, 211At, 32P, 33P, 71As, 72As, 74As, 76As, and 77As.In some embodiments, E1 comprises a diagnostic agent. In some embodiments, the diagnostic agent is a label selected from a fluorescent label, a chromogenic label, or a radiolabel. Therefore, in some embodiments, the diagnostic agent is selected from a fluorescent compound, an enzyme, a prosthetic group, a luminescent material, a bioluminescent material, or a radioactive material.In some embodiments, each E1 comprises a chelating group.In some embodiment, each E1 independently comprises any chelating group that is capable of binding with and / or complexing a metal ion (e.g. radionuclide) . In some embodiments, each E1 independently comprises any chelating group that is capable of binding with and / or complexing a metal ion to form a heterocyclic ring including the metal ion. In some embodiments, each E1 independently comprises any chelating known in the art, for example, as disclosed in Banerjee et al., Nucl. Med. Biol., 2005, 32, 1-20, Wadas et al., Chem. Rev., 2010, 110, 2858-2902, U.S. Pat. Nos. 5,367,080, 5,364,613, 5,021,556, 5,075,099, and 5,886,142.In some embodiments, each E1 independently comprises a chelating group derived from a chelating agent. In some embodiments, the chelating agent is selected from a cyclic and an acyclic bifunctional chelating agent capable of complexing one or more radionuclides. In some embodiments, the chelating agent is selected from the group consisting of 1, 4, 7-Triazacyclononane (TACN) , 1, 4, 7-triazacyclononane-triacetic acid (NOTA) , 1, 4, 7-triazacyclononane-N-succinic acid-N', N"-diacetic acid (NOTASA) , 1, 4, 7-triazacyclononane-N-glutamic acid-N', N"-diacetic acid (NODAGA) , 1, 4, 7-triazacyclononane-N, N', N"-tris (methylenephosphonic) acid (NOTP) , 1, 4, 7, 10-tetraazacyclododecane (
[0012] aneN4) (cyclen) , 1, 4, 7, 10-tetraazacyclotridecane (
[0013] aneN4) , 1, 4, 7, 11-tetraazacyclotetradecane (iso-cyclam) , 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid (DOTA) , 2- (1, 4, 7, 10-tetraazacyclododecan-1-yl) acetate (DO1A) , 2, 2' - (1, 4, 7, 10-tetraazacyclododecane-1, 7-diyl) diacetic acid (DO2A) , 2, 2' , 2" - (1 , 4, 7, 10-tetraazacyclododecane-1 , 4, 7-triyl) triacetic acid (DO3A) , 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetra (methanepnosphonic acid) (DOTP) , 1, 4, 7, 10-tetraazacyclododecane-1, 7-di (methanephosphoriic acid) (DO2P) , 1 , 4, 7, 10-tetraazacyclododecane-1, 4, 7-tri (methanephosphonic acid) (DO3P) , 1, 4, 7, 10-tetraazacyclo-decane-1 -glutamic acid-4, 7, 10-triacetic acid (DOTAGA) , 1, 4, 7, 10-tetraazacyclodecane-1 -succinic acid-4, 7, 10-triacetic acid (DOTASA) , 1, 4, 8, 11-tetraazacyclotetradecane (
[0014] aneN4) (cyclam) , 1, 4, 8, 12-tetraazacyclopentadecane (
[0015] aneN4) , 1, 5, 9, 13-tetraazacyclohexadecane (
[0016] aneN4) , 1, 4-ethano-1, 4, 8, 11-tetraazacyclo-tetradecane (et-cyclam) , 1, 4, 8, 11-tetraazacyclotetradecane-1, 4, 8, 1 1-tetraacetic acid (TETA) , 2- (1, 4, 8, 11 -tetraazacyclotetradecane-1-y I) acetic acid (TE1A) , 2, 2' - (1, 4, 8, 11-tetraazacyclotetradecane-1,8-diyl) diacetic acid (TE2A) , 4, 11-bis (carboxy methyl) -1, 4, 8, 11-tetraazabicyclo [6.6.2] -hexadecane (CB-TE2A) , 3, 6, 10, 13, 16, 19-hexaazabicyclo [6.6.6] icosane (Sar) , 1, 4, 7, 10-tetra- (2-carbamoyl-methyl) -cyclododecane (TCMC) , N, N′-bis [ (6-carboxy-2-pyridil) methyl] -4, 13-diaza-18-crown-6 (macropa) , phthalocyanines, porphyrins, PCTA (3, 6, 9, 15-tetraazabicyclo [9.3.1] pentadeca-1 (15) , 11, 13-triene-3, 6, 9-triacetic acid) , DEPA (7- [2- (biscarboxymethylamino) ethyl] -4, 10-biscarboxymethyl-1, 4, 7, 10-tetraazacyclododec-1-yl-acetic acid) , DTPA (1, 1, 4, 7, 7-diethylenetriaminepentaacetic acid) , CHX-DTPA (cyclohexane-1, 2-diamineN, N, N′, N′-tetraacetate) , BATPA (1, 2-bis [2-aminophenoxy] ethane-N, N, N′, N′-tetraacetic acid) , TTHA (triethylenetetramineN, N, N′, N″, N″′, N″′-hexaacetic acid) , HBED (N, N′-bis [2-hydroxybenzyl] ethylenediamine-N, N′-diacetic acid) , EGTA (ethylene glycol bis [2-aminoethyl ether] -N, N, N′, N′-tetraacetic acid) , EDTMP (ethylenediamine tetra- [methylene phosphonic acid] ) , TRAP (triazacyclononate phosphinic acids) , SHBED (N, N′-bis [2-hydroxy-5-sulfobenzyl] ethylenediaminediacetic acid) , H6Sbbpen (N, N′-bis- [2-hydroxy-5-sulfonylbenzyl] -N, N′-bis [2-methylpyridyl] ethylenediamine) , THP (Tris (3, 4-hydroxypyridinone) , DFO (deferoxamine) , FSC (Fusarinine) , TAFC (triacetylfusarinine C) , FOXE (ferrioxamine E) , 6SS (N, N′-bis [2, 2-dimethyl-2-mercaptoethyl] ethylenediamine-N, N′-diacetic acid) , ECC (ethylenecysteamine cysteine) , ECD (ethyl cysteinate dimer) , NETA ( [2- {4, 7-biscarboxymethyl (1, 4, 7) triazacyclonona-1-yl-ethyl} carbonylmethylamino] acetic acid, THPN (Tetrakis (3-Hydroxy-4-Pyridinone) ) , H2dedpa (1, 2- [ {6- (carboxylato-) pyridin-2-yl} methylamino] -ethane) , H4octapa (N, N′-bis [6-carboxy-2-pyridylmethyl] -ethylenediamine-N, N′-diacetic acid) , H2bispa2 (6, 6′- [ {9-hydroxy-1, 5-bis- (methoxycarbonyl) -2, 4-di (pyridin-2-yl) -3, 7-diazabicyclo [3.3.1] nonane-3, 7-diyl} bis (methylene) ] dipicolinic acid) , DOTMP (1, 4, 7, 10-Tetraazacyclododecane-1, 4, 7, 10-tetrayl-tetrakis (methylphosphonic acid) ) , PEPA (1, 4, 7, 10, 13-pentaazocyclopentadecane pentaacetic acid) , HEHA (1, 4, 7, 10, 13, 16-hexaazocyclooctadecane hexaacetic acid) , H2hox, H2CHXhox, H2octox, H2pyhox, H4neunopa, TETPA, H4pypa, H4py4pa, DTPAm, EGTAm, ampam, Me-3, 2-HOPO, 3, 4, 3- (LI-1, 2-HOPO) , and macrocyclic tetrapthalimide; or any derivatives thereof. In some embodiments, each E1 independently comprises a chelating group derived from a chelating agent selected from DOTA and DOTAGA.A person skilled in the art would appreciate that “a chelating group derived from a chelating agent” as used herein refers to a chelating agent derivative formed after the chelating agent is connected to the compound of Formula I. For example, “a chelating group derived from a chelating agent” may be a chelating agent without the “-OH” (or ester thereof) of an available carboxyl group (or ester thereof) on the chelating agent, without the “H” portion of an available amino group on the chelating agent, without the “NCS” portion of an available isothiocyanate on the chelating agent, without the “H” portion of an available maleimide group on the chelating agent, a chelating agent after an available acetylene group on the chelating agent has been reacted to connect to the compound of Formula I, or a chelating agent after an available tetrazole group on the chelating agent has been reacted to connect to the compound of Formula I. For example, a person skilled in the art would appreciate that when E1 is a chelating group derived from a DOTA, one “-OH” from one of the four available carboxyl groups on DOTA is removed to form the connection to LE (or, e.g., Z when LE is a direct bond) in the compound of Formula I.In some embodiments, each E1 (optionally E2) is independently connected to LE1, LE2, LE3, T or to Z through any one of the available functional groups. In some embodiments, each E1 is independently a chelating group comprising two or more carboxyl groups, and E1 is connected to LE1, LE2, LE3, T or to Z through a carboxyl functional group. In some embodiments, each E1 is independently a chelating group derived from DOTA or DOTAGA and is connected to LE1, LE2, LE3, T or to Z through any one of the available carboxyl functional groups. In some embodiments, each E1 is independently a chelating group derived from DOTA and is connected to LE1, LE2, LE3, T or to Z through any one of the available carboxyl functional groups.In some embodiments, the metal ion is a radionuclide. In some embodiments, the radionuclides complexed with the chelating group are each independently a radioactive isotope of As, K, Sc, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ga, Ge, Rb, Sr, Y, Zr, Nb, Tc, Rh, Pd, In, Sn, Sb, Zn, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po, Fr, Pm, lanthanide (such as La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) , an actinide (such as Ac, Th, U) , Mg, Al, Ca, Cd, and Ba. In some embodiments, the lanthanide is Lu, Sm, Ho, or Tb. In some embodiments, the actinide is Ac, Th, or U.In some embodiments, the one or more radionuclides complexed with the chelating group are each independently selected from the group consisting of 199Tc, 99mTc, 188Re, 186Re, 153Sm, 66Ga, 67Ga, 68Ga, 111In, 123In, 59Fe, 63Zn, 52Fe, 52Mn, 45Ti, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 82Rb, 195mPt, 191mPt, 193mPt, 117mSn, 89Zr, 177Lu, 18F, 188Re, 186Re, 153Sm, 66Ho, 86Y , 87Y , 90Y, 89Sr, 153Gd, 159Gd, 225Ac, 212Bi, 213Bi, 198Au, 199Au, 193mPt, 197Pt, 103Pd, 109Pd, 105Rh, 101mRh, 103mRh, 223Ra, 224Ra, 97Ru, 227Th, 229Th, 161Tb, 149Tb, 203Pb, 212Pb, 201TI, 119Sb, 58mCo, 55 Co, 57Co, 47Sc, 149Pm, 142Pr, 161Ho, 166Ho, 175Yb, and 51Cr.In some embodiments, the compound provided herein may be used for imaging, and the one or more radionuclides complexed with the chelating group for use in imaging are selected from the group consisting of99mTc, 188Re, 186Re, 153Sm, 66Ga, 67Ga, 68Ga, 111In, 59Fe, 63Zn, 52Fe, 52Mn, 45Ti, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 82Rb, 198Au, 199Au, 195mPt, 191mPt, 193mPt, 117mSn, 89Zr, 177Lu, 203Pb, 44Sc, 51Cr, 101mRh, and 166Ho.In some embodiments, the compound provided herein may be used for killing a cell or treating a disease, and the one or more radionuclides for killing a cell or treating a disease are selected from the group consisting of188Re, 186Re, 153Sm, 66Ho, 90Y, 89Sr, 111In, 153Gd, 225Ac, 212Bi, 213Bi, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 198Au, 99Au, 195mPt, 193mPt, 197Pt, 117mSn, 103Pd, 105Rh, 103mRh, 177Lu, 223Ra, 224Ra, 227Th, 229Th, 149Tb, 161Tb, 203Pb, 212Pb, 201TI, 119Sb, 58mCo, 47Sc, 149Pm, 161Ho, 159Gd, 142Pr, 166Ho, and 175Yb. In some embodiments, the one or more radionuclides for use in therapy are selected from the group consisting of 177Lu, 212Pb, and 225Ac. In some embodiments, the radionuclides for killing a cell or treating a disease is 177Lu or 225Ac. In some embodiments, the one or more radionuclides for killing a cell or treating a disease is 177Lu. In some embodiments, the one or more radionuclides for killing a cell or treating a disease is 225Ac.In some embodiments, each of TA, TE and T is independently a branching group which is trivalent, tetravalent or pentavalent. In some embodiments, each of TA, TE and T is independently a branching group which is trivalent. Therefore, in some embodiments, each of TA, TE and T is independently a trivalent branching group.In some embodiments, each of TA, TE and T independently comprises at least a first terminal functionality, a second terminal functionality and a third terminal functionality which are the same or different and when bonded to LA1, LA2 and LA3, (or alternatively A1 and / or T) , to LE1, LE2 and LE3 (or alternatively E1and / or T) , and to LZ, F, and F' respectively independently form an amide group. In some embodiments, when bonded to LA1, LA2 and LA3, (or alternatively A1 and / or T) , to LE1, LE2 and LE3 (or alternatively E1 and / or T) , and to LZ, F, and F' respectively, an amide group, an ester group or a disulfide bond group is formed. In some embodiments, when bonded to LA1, LA2 and LA3, (or alternatively A1 and / or T) , to LE1, LE2 and LE3(or alternatively E1 and / or T) , and to LZ, F, and F' respectively an ester group is formed. In some embodiments, each of TA, TE and T independently comprises at least a first terminal functionality, a second terminal functionality and a third terminal functionality which are the same or different and when bonded to LA1, LA2 and LA3, (or alternatively A1 and / or T) , to LE1, LE2 and LE3 (or alternatively E1 and / or T) , and to LZ, F, and F' respectively independently form an amide group.In some embodiments, each TA, TE and T independently comprises an amino acid residue derived from Lys, ornithine (Orn) , homo-lysine, 2, 3-diaminopropionic acid (Dap) , 2, 4-diaminobutyric acid (Dab) , cysteine, homo-cysteine, glutamine, glutamic acid, asparagine, aspartic acid, 3, 5-bis (aminomethyl) benzoic acid (Bab) , 4-aminomethylphenylalaline (Amp) , 4R-4-aminoproline (Apr) , 4- (2-aminoethoxy) phenylalanine, 4-aminopiperidine-4-carboxylic acid (Apc) , 2- ( (1, 3-diaminopropan-2-yl) oxy) acetic acid (Dpa) , or a D enantiomer thereof. In some embodiments, each TA, TE and T is independently an amino acid residue derived from lysine, DAP or DAB. In some embodiments, each TA, TE and T is independently an amino acid residue derived from lysine, or DAB. In some embodiments, each TA, TE and T is independently an amino acid residue derived from DAB. In some embodiments, each TA, TE and T is independently an amino acid residue derived from lysine, having the following structureIn some embodiments, one of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is a cleavable linker and the remaining of LA1, LA2, LA3, LE1, LE2, LE3 and LZ are selected from a direct bond and a non-cleavable linker. In some embodiments, one of LA1, LE1 and LZ is a cleavable linker and the remaining of LA1, LA2, LA3, LE1, LE2, LE3 and LZ are selected from a direct bond and a non-cleavable linker. In some embodiments, LE1 is a cleavable linker and the remaining of LA1, LA2, LA3, LE1, LE2, LE3 and LZ are selected from a direct bond and a non-cleavable linker. In some embodiments, LA1 is a cleavable linker and the remaining of LA1, LA2, LA3, LE1, LE2, LE3 and LZ are selected from a direct bond and a non-cleavable linker. In some embodiments, LZ is a cleavable linker and the remaining of LA1, LA2, LA3, LE1, LE2, LE3 and LZ are selected from a direct bond and a non-cleavable linker. In some embodiments, LZ is a direct bond and one of LA1 and LE1 is cleavable linker. In some embodiments, LZ is a direct bond, LE1 is the only cleavable linker. In some embodiments, LZ is a direct bond and LA1 isthe only cleavable linker. In some embodiments, when a is 0 (LZ is not present) , one of LA1 and LE1 is cleavable linker. In some embodiments, when a is 0 (LZ is not present) , LE1 is the onlycleavable linker.In some embodiments, each non-cleavable linker independently comprises one or more groups each comprising one or more non-cleavable moieties. In some embodiments, each non-cleavable linker independently comprises one or more non-cleavable moieties that resist degradation. In some embodiments, the one or more non-cleavable moieties that resist degradation are selected from amine bonds, ether bonds, thioether bonds, amide bonds, thioamide, urea and thiourea bonds.In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, R1NC1-20alkyleneNR2, R1NC1-20alkenyleneNR2 C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R1NC1-20alkyleneC (O) , R1NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNHR2, C (O) C1-20alkenyleneNR2, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , C (O) C1-20alkenyleneC (S) , C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, R1NC1-20alkenyleneC (S) , C (S) C1-20alkyleneNR2 and C (S) C1-20alkenyleneNR2, the latter 19 groups being optionally interrupted by one or more of S, O, NH, N (C1-6alkyl) , C (O) , C (O) NR1, NR1C (O) , C (S) NR1, NR1C (S) , NHC (O) NH, NHC (S) NH, NHC (NH) , NHC (NC1-4alkyl) , C (NH) NH, C (NC1-4alkyl) NH, C4-10cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR3R4, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR3R4, wherein each R1, R2, R3 and R4 is independently selected from H and C1-4alkyl. In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, HNC1-20alkyleneNH, HNC1-20alkenyleneNH, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , HNC1-20alkyleneC (O) , HNC1-20alkenyleneC (O) , C (O) C1-20alkyleneNH, C (O) C1-20alkenyleneNH, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , and C (O) C1-20alkenyleneC (S) , the latter 14 groups being optionally interrupted by one or more of S, O, NH, N (C1-6alkyl) , C (O) , C (O) NR1, NR1C (O) , C (S) NR1, NR1C (S) , NHC (O) NH, NHC (S) NH, NHC (NH) , NHC (NC1-4alkyl) , C (NH) NH, C (NC1-4alkyl) NH, NC4-10cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NH2, NHC1-4alkyl and N (C1-4alkyl) 2.In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, R1NC1-20alkyleneNR2, R1NC1-20alkenyleneNR2, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R1NC1-20alkyleneC (O) , R1NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNR2, and C (O) C1-20alkenyleneNR2, the latter 8 groups being optionally interrupted by one or more of S, O, NH, N (C1-6alkyl) , C (O) , C (O) NR1, NR1C (O) , NHC (O) NH, NHC (S) NH, C4-6cycloalkyl, C4-6heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR3R4, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR3R4, wherein each R1, R2, R3 and R4 is independently selected from H and C1-4alkyl. In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, HNC1-20alkyleneNH, HNC1-20alkyleneNH, C (O) C1-20alkyleneC (O) , C (O) C1-20alkyleneC (O) , HNC1-20alkyleneC (O) , HNC1-20alkenyleneC (O) , C (O) C1-20alkyleneNH, and C (O) C1-20alkenyleneNH, the latter 8 groups being optionally interrupted by one or more of S, O, NH, N (C1-6alkyl) , C (O) , C (O) NH, C (O) N (C1-6alkyl) , NHC (O) , N (C1-6alkyl) C (O) , NHC (O) NH, NHC (S) NH, C4-6cycloalkyl, C4-6heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NH2, NHC1-4alkyl and N (C1-4alkyl) 2.In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, R1NC1-20alkyleneNR2, C (O) C1-20alkyleneC (O) , R1NC1-20alkyleneC (O) , and C (O) C1-20alkyleneNR2, the latter 4 groups being optionally interrupted by one or more of S, O, C (O) NR1, NR1C (O) , C4-6cycloalkyl, C4-6heterocycloalkyl, and each alkyl, and alkylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR3R4, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR3R4 wherein each R1, R2, R3 and R4 is independently selected from H and C1-4alkyl. In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, HNC1-20alkyleneNH, C (O) C1-20alkyleneC (O) , HNC1-20alkyleneC (O) , and C (O) C1-20alkyleneNH, the latter 4 groups being optionally interrupted by one or more of S, O, C (O) NH, C (O) N (C1-6alkyl) , NHC (O) , N (C1-6alkyl) C (O) , C4-6cycloalkyl, C4-6heterocycloalkyl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NH2, NHC1-4alkyl and N (C1-4alkyl) (C1-4alkyl) .In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, R1NC1-20alkyleneNR2, C (O) C1-20alkyleneC (O) , R1NC1-20alkyleneC (O) , and C (O) C1-20alkyleneNR2, the latter 4 groups being optionally interrupted by one or more of S, O, C (O) NR1, NR1C (O) , C4-6cycloalkyl and C4-6heterocycloalkyl and each alkyl and alkylene is optionally substituted with one or more substituents selected from halo, CO2H, NR3R4 and C1-4alkyleneNR3R4 wherein each R1, R2, R3 and R4 is independently selected from H and C1-4alkyl.In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, R1NC1-20alkyleneNR2, C (O) C1-20alkyleneC (O) , R1NC1-20alkyleneC (O) , and C (O) C1-20alkyleneNR2, the latter 4 groups being optionally interrupted by one or more of S, O, C (O) NR1, NR1C (O) , C4-6cycloalkyl and C4-6heterocycloalkyl wherein each R1 and R2 is independently selected from H and C1-4alkyl. In some embodiments, each non-cleavable linker independently comprises one or more groups selected from amino acid residues, HNC1-20alkyleneNH, C (O) C1-20alkyleneC (O) , HNC1-20alkyleneC (O) , and C (O) C1-20alkyleneNH, the latter 4 groups being optionally interrupted by one or more of S, O, C (O) NH, C (O) N (C1-6alkyl) , NHC (O) , N (C1-6alkyl) C (O) , C4-6cycloalkyl and C4-6heterocycloalkyl.In some embodiments, R1, R2, R3 and R4 are independently selected from H, CH3, CH2CH3, CH2CH2CH3, CH (CH3) 2, and C (CH3) 3. In some embodiments, R1, R2, R3 and R4 are independently selected from H and C1-3alkyl. In some embodiments, R1, R2, R3 and R4 are independently selected from H, CH3, CH2CH3, and CH (CH3) 2. In some embodiments, R1, R2, R3 and R4 are independently selected from H, and CH3. In some embodiments, R1, R2, R3 and R4 are all H.In some embodiments, each non-cleavable linker independently further one or more groups selected from the group consisting of - (C2alkyleneO) 2C1alkyleneC (O) (OEG) , - (C2alkyleneO) C2alkyleneC (O) (PEG1) , - (C2alkyleneO) 3C2alkyleneC (O) (PEG3) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG6) , - (C2alkyleneO) 6C2alkyleneC (O) (PEG8) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG12) .In some embodiments, each cleavable linker independently comprises at least one group comprising one to four cleavable moieties or at least two groups which connect to form a cleavable moiety. In some embodiments, each cleavable linker independently comprises two to four groups each comprising one or two cleavable moieties and / or which connect to form a cleavable moiety. In some embodiments, each cleavable linker independently comprises two groups which each comprise one or two cleavable moieties and / or which connect to form cleavable moieties. In some embodiments, each cleavable linker independently comprises one group comprising one or two cleavable moieties.In some embodiments, each cleavable linker independently comprises one or more groups selected from one or more amino acid residues, R5NC1-20alkyleneNR6, R5NC1-20alkenyleneNR5, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R5NC1-20alkyleneC (O) , R5NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNR6, C (O) C1-20alkenyleneNR6, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , C (O) C1-20alkenyleneC (S) , SC1-20alkyleneS, SC1-20alkenyleneS, SC1-20alkyleneNR6, SC1-20alkenyleneNR6, R5NC1-20alkyleneS, R5NC1-20alkenyleneS, R5NC1-20alkyleneO, R5NC1-20alkenyleneO, OC1-20alkyleneNR6, OC1-20alkenyleneNR6, SC1-20alkyleneO, SC1-20alkenyleneO, OC1-20alkyleneS, and OC1-20alkenyleneS, C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, OC1-20alkyleneC (O) , OC1-20alkenyleneC (O) , C (O) C1-20alkyleneS, C (O) C1-20alkenyleneS, SC1-20alkyleneC (O) , SC1-20alkenyleneC (O) , R5NC1-20alkyleneC (S) , R5NC1-20alkenyleneC (S) , C (S) C1-20alkyleneNR6, C (S) C1-20alkenyleneNR6, C (S) C1-20alkyleneO, C (S) C1-20alkenyleneO, OC1-20alkyleneC (S) , OC1-20alkenyleneC (S) , SC1-20alkyleneC (S) , SC1-20alkenyleneC (S) , OC1-20alkyleneO, OC1-20alkenyleneCO, SC1-20alkyleneS, SC1-20alkenyleneS, the latter 50 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NR5, NR5C (O) O, SC (O) , C (O) S, NR5OC (O) NR6, C=NNH, C=NNH2, C=NOH, C=NO, NR5-NR6, S, O, NR5, C (O) , C (O) NR5, NR5C (O) , NHC (O) NH, NHC (S) NH, C (S) NH, NHC (S) , NHC (NR5) , C (NR5) NH, C4-18cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR7R8 wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, or at least one group comprises at one or more cleavable moieties, wherein each cleavable moiety is independently selected from S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, OC (O) NC1-4alkyl, NHC (O) O, N (C1-4alkyl) C (O) O SC (O) , C (O) S, C=NNH, C=NO, NC1-4alkylC (O) O, NHOC (O) NH, NC1-4alkylOC (O) , NH-NH, NH-NC1-4alkyl, NC1-4alkyl-NH, NC1-4alkyl-NC1-4alkyl, or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, each cleavable linker independently comprises one or more groups selected from amino acid residues, R5NC1-20alkyleneNR6, R5NC1-20alkenyleneNR6, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R5NC1-20alkyleneC (O) , R5NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNR6, C (O) C1-20alkenyleneNR6, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , SC1-20alkyleneS, SC1-20alkyleneNR6, R5NC1-20alkyleneS, R5NC1-20alkyleneO, R5NC1-20alkenyleneO, OC1-20alkyleneNR6, OC1-20alkenyleneNR6, SC1-20alkyleneO, OC1-20alkyleneS, C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, OC1-20alkyleneC (O) and OC1-20alkenyleneC (O) , the latter 26 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NR5, NR5C (O) O, SC (O) , C (O) S, NR5OC (O) NR6, C=NNH, C=NNH2, C=NOH, C=NO, NR5-NR6, S, O, NR5, C (O) , C (O) NR5, NR5C (O) , NHC (O) NH, NHC (S) NH, C (S) NH, NHC (S) , C4-18cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR7R8 wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, at least one group comprises one or more cleavable moieties, wherein each cleavable moiety is independently selected from S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) , C (O) S, C=NNH, C=NO, NC1-4alkylC (O) O, NHOC (O) NH, NC1-4alkylOC (O) , NH-NH, NH-NC1-4alkyl, NC1-4alkyl-NH and NC1-4alkyl-NC1-4alkyl, or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, each cleavable linker independently comprises one or more groups selected from amino acid residues, R5NC1-20alkyleneNR6, R5NC1-20alkenyleneNR6, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R5NC1-20alkyleneC (O) , R5NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNR6, C (O) C1-20alkenyleneNR6, R5NC1-20alkyleneO, R5NC1-20alkenyleneO, OC1-20alkyleneNR6, OC1-20alkenyleneNR6, OC1-20alkyleneS, C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, OC1-20alkyleneC (O) and OC1-20alkenyleneC (O) , the latter 16 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NR5, NR5C (O) O, SC (O) , C (O) S, NR5OC (O) NR5, S, O, NR5, C (O) , C (O) NR5, NR5C (O) , NHC (O) NH, NHC (S) NH, C (S) NH, NHC (S) , C4-18cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR7R8 wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, or at least one group comprises one or more cleavable moieties, wherein each cleavable moiety is independently selected from S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) , C (O) Sand NC1-4alkylC (O) O, or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, each cleavable linker independently comprises one or more groups selected from one or more amino acid residues, R5NC1-20alkyleneNR6, C (O) C1-20alkyleneC (O) , R5NC1-20alkyleneC (O) , C (O) C1-20alkyleneNR6, R5NC1-20alkyleneO, OC1-20alkyleneNR6, C (O) C1-20alkyleneO and OC1-20alkyleneC (O) the latter 8 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NR5, NR5C (O) O, SC (O) , C (O) S, NR5OC (O) NR5, S, O, NR5, C (O) , C (O) NR5, NR5C (O) , NHC (O) NH, NHC (S) NH, C (S) NH, NHC (S) , C4-18cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl and alkylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR7R8 wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, at least one group comprises one or more cleavable moieties, wherein each cleavable moiety I sindependently selected from S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) , C (O) Sand NC1-4alkylC (O) O, or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, each cleavable linker independently comprises one or more groups selected from amino acid residues, R5NC1-20alkyleneNR6, C (O) C1-20alkyleneC (O) , R5NC1-20alkyleneC (O) , C (O) C1-20alkyleneNR6, R5NC1-20alkyleneO, OC1-20alkyleneNR6, C (O) C1-20alkyleneO and OC1-20alkyleneC (O) the latter 8 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NR5, SC (O) , C (O) S, S, O, NR5, C (O) , C (O) NR5, NR5C (O) , NHC (O) NH, NHC (S) NH, C (S) NH, NHC (S) , C4-18cycloalkyl, and C4-10heterocycloalkyl, and each alkyl and alkylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, and C1-4alkyleneNR7R8 wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, at least one group comprises one or more cleavable moieties, wherein, each cleavable moiety is independently selected from S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) and C (O) S, or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, each cleavable linker independently comprises one or more groups selected from amino acid residues, R5NC1-20alkyleneNR6, C (O) C1-20alkyleneC (O) , R5NC1-20alkyleneC (O) , C (O) C1-20alkyleneNR6, R5NC1-20alkyleneO, OC1-20alkyleneNR6, C (O) C1-20alkyleneO and OC1-20alkyleneC (O) the latter 8 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , S, O, C (O) NR5, NR5C (O) , C4-18cycloalkyl, and C4-10heterocycloalkyl, and each alkyl and alkylene is optionally substituted with one or more substituents selected from halo, CO2H, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, and C1-4alkyleneNR7R8 wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, provided one or more cleavable moieties, wherein, each cleavable moiety is independently selected from S-S, C (O) O and OC (O) , or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, each cleavable linker independently comprises one or more groups selected from one or more amino acid residues, R5NC1-20alkyleneNR6, C (O) C1-20alkyleneC (O) , R5NC1-20alkyleneC (O) , C (O) C1-20alkyleneNR6, R5NC1-20alkyleneO, OC1-20alkyleneNR6, C (O) C1-20alkyleneO and OC1-20alkyleneC (O) , the latter 8 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , S, O, C (O) NR5, NR5C (O) , C4-18cycloalkyl, and C4-10heterocycloalkyl, and each alkyl and alkylene is optionally substituted with one or more substituents selected from halo, CO2H, NR7R7, and C1-4alkyleneNR7R8 , wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, at least one group comprises one or more cleavable moieties, wherein, each cleavable moiety is independently selected from S-S, C (O) O and OC (O) , or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, each cleavable linker independently comprises one or more groups selected from one or more amino acid residues, R5NC1-20alkyleneNR6, C (O) C1-20alkyleneC (O) , R5NC1-20alkyleneC (O) , C (O) C1-20alkyleneNR6, R5NC1-20alkyleneO, OC1-20alkyleneNR6, C (O) C1-20alkyleneO and OC1-20alkyleneC (O) , the latter 8 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , S, O, C (O) NR5, NR5C (O) , wherein R5 and R6 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, at least one group comprises one or more cleavable moieties, wherein, each cleavable moiety is independently selected from S-S, C (O) O and OC (O) , or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, the cleavable moiety is selected from S-S, C (O) O and OC (O) . In some embodiments, the cleavable moiety is selected from C (O) O and OC (O) .In some embodiments, at least two groups connect to form a cleavable moiety selected from S-S, C (O) O and OC (O) . In some embodiments, two groups selected from an amino acid residue, R5NC1-20alkyleneO, OC1-20alkyleneNR6, C (O) C1-20alkyleneO and OC1-20alkyleneC (O) connect to form a cleavable moiety selected from C (O) O and OC (O) . In some embodiments, an amino acid residue, and one of R5NC1-20alkyleneO, OC1-20alkyleneNR6, C (O) C1-20alkyleneO and OC1-20alkyleneC (O) connect to form a cleavable moiety selected from C (O) O and OC (O) . In some embodiments, an amino acid residue, and one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) connect to form a cleavable moiety selected from C (O) O and OC (O) .In some embodiments, each cleavable linker independently comprises one to fifteen groups, one to twelve, one to ten, one to eight, one to seven or one to six groups as defined above. In some embodiments, each cleavable linker independently comprises one to one to eight, one to seven or one to six groups as defined above.In some embodiments, C4-10cycloalkyl is selected from cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and cycloheptyl.In some embodiments, C4-10heterocycloalkyl is selected from azetidinyl, oxetanyl, tetrohydrofuranyl, tetrahydrothiophenyl, pyrrolidinyl, dihydropyrrolyl, imidazolidinyl, pyrazolidinyl, thiazolidinyl, isothiazolidinyl, dioxolanyl, dithiolanyl, 3, 4, 5, 6-tetrahydro-1, 2, 4-triazinyl, dioxidothiomorpholino, tetrahydropyridinyl, dihydropyridinyl, dihydropyranyl, thianyl, piperidinyl, piperazinyl, tetrahydropyranyl, thiomorpholinyl, morpholinyl, dioxanyl, azepanyl, diazepanyl, oxepanyl and thiepanyl.In some embodiments, the C6-10aryl is selected from phenyl, indanyl or naphthyl.In some embodiments, the C5-11heteroaryl is selected from triazolyl, pyrrolyl, imidazolyl, oxazolyl, pyrazolyl, thiazolyl, pyridinyl, pyrazinyl, pyridazinyl and pyrimidinyl.In some embodiments, the amino acid residues in the cleavable linkers or non-cleavable linkers are derived from naturally occurring amino acids or non-naturally occurring amino acids.In some embodiments, each cleavable linker independently further one or more groups selected from the group consisting of - (C2alkyleneO) 2C1alkyleneC (O) (OEG) , - (C2alkyleneO) C2alkyleneC (O) (PEG1) , - (C2alkyleneO) 3C2alkyleneC (O) (PEG3) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG6) , - (C2alkyleneO) 6C2alkyleneC (O) (PEG8) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG12) .In some embodiments, the amino acid residues in the cleavable or non-cleavable linkers are derived naturally occurring amino acids. In some embodiments, the naturally occurring amino acids are one or more naturally occurring amino acid selected from, but are not limited to, alanine (Ala, A) , arginine (Arg, R) , asparagine (Asn, N) , aspartic acid (Asp, D) , cysteine (Cys, C) , glutamine (Gln, Q) , glutamic acid (Glu, E) , γGluglutamine (Gln) , glycine (Gly, G) , histidine (His, H) , isoleucine (Ile, I) , leucine (Leu, L) , Lysine (Lys, K) , εLys, methionine (Met, M) , phenylalanine (Phe, F) , proline (Pro, P) , serine (Ser, S) , threonine (Thr, T) , tryptophan (Trp, W) , tyrosine (Tyr, Y) , valine (Val, V) , pyrrolysine (Pyl, O) , selenocycleine (Sec) , pyrroline-carboxy-lysine (PCL) ) , gamma-carboxyglutamic acid (Gla) , and a D enantiomer thereof..In some embodiments, the non-naturally occurring amino acids are one or more non-naturally occurring amino acids selected from modified amino acids, β-amino acids, γ-amino acids, homo amino acids, N-methyl amino acids, α-methyl amino acids, des-amino amino acids, and D enantiomer of the naturally occurring amino acids or the modified amino acids.In some embodiments, the non-naturally occurring amino acid is one or more modified amino acid. In some embodiments, the one or more modified amino acids are selected from, but not limited hydroxyproline (Hyp) , γ-carboxyglutamate, O-phosphoserine, azetidinecarboxylic acid, 2-aminoadipic acid, 3-aminoadipic acid, beta-alanine, aminopropionic acid, 2-aminobutyric acid, 4-aminobutyric acid (Abu) , 6-aminocaproic acid, 2-aminoheptanoic acid, 2-aminoisobutyric acid (Aib) , 3-aminoisobutyric acid, 2-aminopimelic acid, tertiary-butylglycine, 2, 4-diaminoisobutyric acid, desmosine, 2, 2′-diaminopimelic acid, 2, 3-diaminoproprionic acid, N-ethylglycine, N-methylglycine, N-ethylasparagine, homoproline, hydroxylysine, allo-hydroxylysine, 3-hydroxyproline, 4-hydroxyproline, isodesmosine, allo-isoleucine, N-methylalanine, N-methylglycine, N-methylisoleucine, N-methylpentylglycine, N-methylvaline, naphthalanine (Nal) , norvaline, norleucine (Nle) , ornithine (Orn) , pentylglycine, pipecolic acid, thioproline, 3-nitrotyrosine, nitroarginine, 2, 4-diaminobutyric acid (DAB) , 2, 3-diaminopropionic acid (DAP) , methionine sulfoxide, methionine sulfone, NR5C5alkyleneC (O) (Ahx) , L-Cysteic acid (Cya) , norleucine (Nle) , norvaline (Nva) , 2-aminooctanoic acid (Aoc) , 2-naphthylalanine (2-Nal) , 3- (trifluoromethyl) phenylalanine (TFP) , homophenylalanine (hPhe) , cyclohexylalanine (Cha) , 1-naphthylalanine (1-Nal) , 4-benzoyl-L-phenylalanine (Bpa) , 2-methoxy-4-vinylphenylalanine (MvF) , 4-fluorophenylalanine (4-F-Phe) , 4-phenyl-2, 3-dihydroxy-6-nitrophenylalanine (pNIPA) , 2- (2-naphthyl) alanine (2-Nal-ala) , 4- (4-propoxyphenyl) alanine (Ppa) , 4-carboxyphenylalanine (4-CPA) , 4-butylphenylalanine (Bua) , 2-nitrophenylalanine (2-Npa) , 4-azidophenylalanine (4-AzF) , 2- (4-nitrophenyl) ethylalanine (2-Npe) , 3-iodo-L-tyrosine (Ity) , and 5, 5, 5-trifluoroleucine (TFL) .In some embodiments, the non-naturally occurring amino acid is a D enantiomer of the naturally occurring amino acids or the modified amino acids.In some embodiments, the naturally occurring amino acid residue derived from Glu is connected through the α-amino and the α-carboxy or the α-amino and the γ-carboxy terminal. Therefore, in some embodiments, the naturally occurring amino acid residue derived from Glu isor γGlu residue , In some embodiments, the naturally occurring amino acid residue derived from Asp is connected through amino and the α-carboxy or is connected through the amino and the β-carboxy terminal. In some embodiments, the naturally occurring amino acid residue derived from Lys is connected through α-amino and the α-carboxy or the α-amino and the ε-amino terminal. Therefore, in some embodiments, the naturally occurring amino acid residue is derived from Lysand / or εLys residue, Therefore, in some embodiments, each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl, Sec or PCL; D enantiomers of the naturally occurring amino acid residues; N-methyl amino acids residues of the naturally occurring amino acid residues; 4-diaminobutyric acid (DAB) ; 2, 3-diaminopropionic acid (DAP) ; -R1NC1-20alkyleneNR2; C (O) C1-20alkyleneC (O) ; R1NC1-20alkyleneC (O) ; and C (O) C1-20alkyleneNR2, the latter 4 groups being optionally interrupted by one or more of S, O, C (O) NR1, NR1C (O) , C4-6cycloalkyl and C4-6heterocycloalkyl, wherein each R1 and R2 is independently selected from H and C1-2alkyl.In some embodiments, each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl, Sec or PCL, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino acid residues; amino acid residues derived from modified amino acids selected from DAB and DAP; R1NC1-20alkyleneNR2; C (O) C1-20alkyleneC (O) ; R1NC1-20alkyleneC (O) ; and C (O) C1-20alkyleneNR2, the latter 4 groups being optionally interrupted by one to four of S, O, C (O) NR1 and NR1C (O) , wherein each R1 and R2 is independently selected from H and C1-2alkyl.In some embodiments, each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl , Sec or PCL, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino acid residues; amino acids residues derived from modified amino acids selected from DAB and DAP; R1NC1-20alkyleneNR2; C (O) C1-20alkyleneC (O) ; R1NC1-20alkyleneC (O) ; C (O) C1-20alkyleneNR2, the latter 4 groups being optionally interrupted by one to three of O, wherein each R1 and R2 is independently selected from H and C1-2alkyl.In some embodiments, R1NC1-20alkyleneC (O) is interrupted by one to six of O, and is In some embodiments, R1NC1-20alkyleneC (O) is selected from In some embodiments, R1NC1-20alkyleneNR2 isTherefore, in some embodiments, each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl , Sec or PCL, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino; amino acids residues derived from modified amino acids selected from DAB and DAP;wherein each R1 is independently selected from H and C1-2alkyl.In some embodiments, each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1 andwherein each R1 is independently selected from H and C1-2alkyl.In some embodiments, each non-cleavable linker independently comprises one or more groups independently selected from amino acid residues derived from Glu, γGlu, or Gly; and OEG-R1, wherein R1 is selected from H and CH3.In some embodiments, each non-cleavable linker independently comprises one or more γGlu and one or more OEG-R1 and each non-cleavable linker independently comprises γGlu1-8- (OEG-R1) 1-8, wherein R1 is selected from H and CH3. In some embodiments, each non-cleavable linker independently comprises γGlu1-6- (OEG-R1) 1-3, wherein R1 is selected from H and CH3. In some embodiments, each non-cleavable linker independently comprises γGlu1-3- (OEG-R1) 1-6, wherein R1 is selected from H and CH3. In some embodiments, each non-cleavable linker independently comprises a γGlu group covalently linked to an OEG-R1 group and each non-cleavable linker independently comprises wherein R1 is selected from H and CH3.In some embodiments, each non-cleavable linker independently comprises one or more OEG-R1, wherein R1 is selected from H and CH3.In some embodiments, when LA2 or LA3, is a non-cleavable linker, each LA2 and LA3 independently comprises γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3. In some embodiments, when LA2 or LA3, is a non-cleavable linker, each LA2 and LA3 independently comprises γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and each of LA2 and LA3, is covalently linked to A1 by γGlu group, In some embodiments, when d is 0 and LA1 is a non-cleavable linker, each LA1 independently comprises γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3. In some embodiments, when d is 0 and LA1 is a non-cleavable linker, each LA1, independently comprises γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by γGlu group, In some embodiments, when e is 0 and LE1 is a non-cleavable linker, LE1 independently comprises one or more such as one to eight, one to seven, one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3. In some embodiments, when LE1 is a non-cleavable linker, and each LE1 independently comprises one or more such as one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3.In some embodiments, when LZ is a non-cleavable linker, and each LZ independently comprises one or more such as one to eight, one to seven, one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3. In some embodiments, when LZ is a non-cleavable linker, and each LE independently comprises one to four OEG-R1, wherein R1 is selected from H and CH3In some embodiments, each cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acids residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl , Sec or PCL, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino acid residues; amino acids residues derived from modified amino acids selected from 4-diaminobutyric acid (DAB) and 2,3-diaminopropionic acid (DAP) ; R5NC1-20alkyleneNR6; R5NC1-20alkyleneC (O) ; C (O) C1-20alkyleneNR6; C (O) C1-20alkyleneO and OC1-20alkyleneC (O) , the latter 5 groups being optionally interrupted by one or more of S-S, C (O) O, OC (O) , O, C (O) NR5 and NR5C (O) , and each alkyl and alkylene is optionally substituted with one or more substituents selected from halo, CO2H, NR7R7, and C1-4alkyleneNR7R8;wherein R5, R6, R7 and R8 are independently selected from H and C1-4alkyl, provided at least two groups are covalently linked to form a cleavable moiety, at least one group comprises one or more cleavable moieties, wherein, each cleavable moiety is independently selected from S-S, C (O) O and OC (O) , or the cleavable linker comprises an enzymatically cleavable peptide sequence.In some embodiments, one of the least two groups that are covalently linked to form a cleavable moiety selected from C (O) O and OC (O) is selected from C (O) C1-20alkyleneO and OC1-20alkyleneC (O) .In some embodiments, the at least one group comprising one or more cleavable moieties selected from S-S, C (O) O and OC (O) is R5NC1-20alkyleneC (O) , and R5NC1-20alkyleneC (O) is optionally further interrupted by one or more of by O, C (O) NR5 and NR5C (O) .In some embodiments, the enzymatically cleavable peptide sequences are peptide sequences cleavable by the kidney brush border enzyme, thermolysin, prolineendopeptidase, fibroblast activation protein (FAP) , neprilysin or a general endopeptidase. In some embodiments, the peptide sequences cleavable by the kidney brush border enzyme are selected from Met-Val-Lys. In some embodiments, the peptide sequences cleavable by thermolysin in Ala-Val. In some embodiments, the peptide sequences cleavable by prolineendopeptidase is Ala-Pro and Gly-Pro. In some embodiments, the peptide sequences cleavable by FAP is Gly-Pro. In some embodiments, the peptide sequences cleavable by neprilysin is Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys. Therefore, in some embodiments, the enzymatically cleavable peptide sequence is selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys.Therefore, in some embodiments, each cleavable linker independently comprises R5NC1-20alkyleneC (O) optionally interrupted by a cleavable moiety selected from S-S, C (O) O and OC (O) ) and optionally further interrupted by one or more of by O, C (O) NR5 and NR5C (O) ; or at least two groups covalently linked to form a cleavable moiety selected from C (O) O and OC (O) , wherein one group is selected from C (O) C1-10alkyleneO or OC1-10alkyleneC (O) ; or an enzymatically cleavable peptide sequence selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys; and optionally further comprises one to fifteen groups independently selected from naturally occurring amino acid residues derived from Gly, γGlu, Glu, Leu, Phe, Tyr, or Lys, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino acid residues; amino acids residues derived from modified amino acids selected from 4-diaminobutyric acid (DAB) and 2, 3-diaminopropionic acid (DAP) ; R5NC1-20alkyleneNR6 andR5NC1-20alkyleneC (O) optionally interrupted by one or more of O.In some embodiments, each cleavable linker independently comprises R5NC1-20alkyleneC (O) optionally interrupted by a cleavable moiety selected from S-S, C (O) O and OC (O) ) and optionally further interrupted by one or more of by O, C (O) NR5 and NR5C (O) ; or at least two groups covalently linked to form a cleavable moiety selected from C (O) O and OC (O) , wherein one group is selected from C (O) C1-10alkyleneO or OC1-10alkyleneC (O) ; or an enzymatically cleavable peptide sequence selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys; and optionally further comprises one to fifteen groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Leu, Phe, Tyr, or Lys, or the D enantiomers thereof; one or more amino acid residues derived from DAP or DAB; R5NC1-20alkyleneNR6 andR5NC1-20alkyleneC (O) optionally interrupted by one to three of O.In some embodiments, the least two groups that are covalently linked to form a cleavable moiety selected from C (O) O and OC (O) is an amino acid residue and one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) .In some embodiments, R5NC1-20alkyleneC (O) interrupted by at least one of S-S, C (O) O and OC (O) and optionally further interrupted by one or more of by O, C (O) NR5 and NR5C (O) is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, R5NC1-20alkyleneNR6 isTherefore, in some embodiments, each cleavable linker independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, and SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; or an enzymatically cleavable peptide sequence selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys; and further optionally comprises one to fifteen groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is selected from H and C1-4alkyl.In some embodiments, each cleavable linker independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, the amino acid residue is as defined above. Therefore, in some embodiments, the least two groups that are covalently linked to form a cleavable moiety selected from C (O) O and OC (O) are selected from a naturally occurring amino acid residue derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl , Sec or PCL, a D enantiomer of the naturally occurring amino acid residue, a N-methyl amino acid residue of the naturally occurring amino acid residue, and an amino acid residue derived from a modified amino acid selected from 4-diaminobutyric acid (DAB) and 2, 3-diaminopropionic acid (DAP) ; and one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) .In some embodiments, the least two groups that are covalently linked to form a cleavable moiety selected from C (O) O and OC (O) is a naturally occurring amino acid residue derived from Gly, Leu, DAB or DAP, and one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) . In some embodiments, the least two groups that are covalently linked to form a cleavable moiety selected from C (O) O and OC (O) is an amino acid residue derived from Gly and one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) .In some embodiments, when LA1, LE1 or LZ is a cleavable linker, each LA1, LE1 or LZ independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or each LA1, LE1 or LZ independently comprises an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) .In some embodiments, when LA1 is a cleavable linker, each LA1 independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, each LA1 further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein R5 is selected from H and C1-4alkyl.In some embodiments, when LA1 is a cleavable linker, each LA1 independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, each LA1 further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from γGlu and OEG-R5, wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, when LA1 is a cleavable linker, each LA1 independently comprises at least one of one group selected from ESL1-R5 and SSL1-R5. In some embodiments, each LA1 further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from γGlu and OEG-R5.In some embodiments, when LA1 is a cleavable linker, each LA1 independently comprises at least one of one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) . In some embodiments, each LA1 further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, when LA1 is a cleavable linker, each LA1 independently comprises an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) . In some embodiments, each LA1 further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein R5 is selected from H and C1-4alkyl.In some embodiments, when LA1 is a cleavable linker, each LA1 independently comprises an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) . In some embodiments, each LA1 further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl.In some embodiments, when LE1 is a cleavable linker, each LE1 independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) . In some embodiments, each LE1 further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, when LE1 is a cleavable linker, each LE1 independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, each LE1 further optionally comprises one to eight OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, when LE1 is a cleavable linker, each LE1 independently is at least one of one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, when LE1 is a cleavable linker, each LE1 independently is ESL1-R5.In some embodiments, when LE1 is a cleavable linker, each LE1 is an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) and further optionally comprises one or more such as one to eight, one to six or one to four OEG-R5 groups wherein R5 is selected from H and C1-4alkyl. In some embodiments, when LE1 is a cleavable linker, each LE1 is an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) .In some embodiments, when LZis a cleavable linker, each LZ independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, each LZ further optionally comprises one or more such as one to eight OEG-R5 groups, wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, when LZ is a cleavable linker, each LZ independently comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, when LE is a cleavable linker, each LZ independently is ESL1 R5. In some embodiments, when LE is a cleavable linker, each LZ is an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) and further optionally comprises one or more such as one to eight, one to six or one to four OEG-R5 groups, wherein R5 is selected from H and C1-4alkyl.In some embodiments, when LZ is a cleavable linker, each LZ is an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) .In some embodiments, C (O) C1-20alkyleneO or OC1-20alkyleneC (O) is selected from ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, and SA-5aPOH.In some embodiments, R5, R6, R7 and R8 are independently selected from H, CH3, CH2CH3, CH2CH2CH3, CH (CH3) 2, and C (CH3) 3. In some embodiments, R5, R6, R7 and R8 are independently selected from H and C1-3alkyl. In some embodiments, R5, R6, R7 and R8 are independently selected H, CH3, CH2CH3, and CH (CH3) 2. In some embodiments, R5, R6, R7 and R8 are independently selected H, and CH3. In some embodiments, R5 is H.In some embodiments, a is 0 (not present) , and the compound of Formula I is a compound of Formula I (i) ,wherein:each A and each E are independently covalently linked to Z;each A is independentlyA1——LA,each E is independentlyE1——LE,Z, A1, E1, LA, LEare as defined in Formula I,b is any integer selected from 1-10, and preferably 1 or 2,c is any integer selected from 1-10, and preferably 1 or 2.In some embodiments, the compound of Formula I (i) comprises at least one cleavable linker.In an exemplary embodiment, b and c are both 1 and d and e are both 0, and the compound of Formula I (i) is a compound of Formula I (i-a) ,wherein Z, A1, LA1, E1 and LE1 are as defined in Formula I (i) .In some embodiments, at least one LA1 and LE1 is a cleavable linker.In an exemplary embodiment, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group, a glucose-dependent insulinotropic peptide receptor (GIP-R) binding group, and / or a B7-H3 binding group, and the compound of compound of Formula I (i-a) is a compound of Formula I (i-a) -A, Formula I (i-a) -A (A) , Formula I (i-a) -A (B) and Formula I (i-a) -A (C) , respectively,andwhereinZGIP / GLP / B7H3 is as defined in Formula I-A;ZGIPis as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;ZB7H3 is as defined in Formula I-A (C) ; andA1, LA1, E1 and LE1 are as defined in Formula IIn some embodiments, the compound of Formula I (i-a) -A, Formula I (i-a) -A (A) , Formula I (i-a) -A (B) , or Formula I (i-a) -A (C) comprises at least one cleavable linker..In an exemplary embodiment, A1 is selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H and unsubstituted or substituted C (O) C14-18alkyl. In an exemplary embodiment, A1 is selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H. In an exemplary embodiment, A1 is selected from C (O) C12-18alkyleneCO2H. In an exemplary embodiment, A1 is selected from C (O) C14-18alkyleneCO2H. In an exemplary embodiment, A1 is selected from C (O) C16alkyleneCO2H and C (O) C18alkyleneCO2H.Accordingly, in an exemplary embodiment, A1 is selected from C (O) C14-18alkyleneCO2H and the compound of I (i-a) is a compound of Formula I (i-a) (C) ,whereink is an integer from 10 to 20, andZ, LA1, E1 and LE1 are as defined in Formula I.In some embodiments, in the compound of Formula I (i-a) (C) , Z is a GIP-R binding group, a GLP-1R binding group, and / or a B7-H3 binding group, and the compound of Formula I (i-a) (C) is a compound of Formula I (i-a) -A (C) , Formula I (i-a) -A (A) (C) , Formula I (i-a) -A (B) (C) and Formula I (i-a) -A (C) (C) , respectively,whereinZGIP / GLP / B7H3 is as defined in Formula I-A;ZGIP is as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;ZB7H3 is as defined in Formula I-A (C) ; andk is an integer from 10 to 20.In some embodiments of the compound of formula I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) , I (i-a) -A (C) (C) , at least one of LA1 and LE1 is a cleavable linker.In some embodiments, k is 14 to 18. In some embodiments, k is 16 to 18. In some embodiments, k is 16 or 18.In an exemplary embodiment, E1 is chelating group derived from a chelating agent selected from DOTA and DOTAGA.In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , one of LA1 and LE1 is a cleavable linker.In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , one of LA1 and LE1 is a cleavable linker.In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LA1 is a direct bond and LE1 is a cleavable linker. In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LE1 is a direct bond and LA1 is a cleavable linker.In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LE1 iscleavable linker and LA1 is a non-cleavable linker. In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LA1 is cleavable linker and LE1 is a non-cleavable linker.In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LE1 is cleavable linker and LA1 is a cleavable linker.In some embodiments, the cleavable linker is as defined herein. In some embodiments, the non-cleavable linker is as defined herein.In an exemplary embodiment, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , the non-cleavable linker comprises one or more groups independently selected from naturally occurring amino acid residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl , Sec or PCL, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino; amino acids residues derived from modified amino acids selected from DAB and DAP; wherein each R1 is independently selected from H and C1-2alkyl.In an exemplary embodiment, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , the non-cleavable linker comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1; andwherein each R1 is independently selected from H and C1-2alkyl.In an exemplary embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LA1 is a non-cleavable linker, LA1 is γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3. In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LA is a non-cleavable linker, LA is independently γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA is covalently linked to A1 by γGlu group, In some embodiments, in the compounds of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LA1 is a non-cleavable linker, LA1 is γGlu1-3- (OEG-R1) 2-8 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by γGlu group. In some embodiments, when LA1 is a non-cleavable linker, LA1 is γGlu1- (OEG-R1) 5-6 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by the γGlu group.In some embodiments, in the compounds of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LE1 is a non-cleavable linker, LE1 comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1; andwherein each R1 is independently selected from H and C1-2alkyl. In some embodiments, when LE1 is a non-cleavable linker, each LE1 independently comprises one to eight, one to seven, one to six, one to five or one to four OEG-R1,wherein R1 is selected from H and CH3.In exemplary embodiments, in the compounds of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , each cleavable linker independently comprises at least one of one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; or an enzymatically cleavable peptide sequence selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys; and further optionally comprises one to fifteen groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compounds of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LA1 is a cleavable linker, LA1 comprises an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl. In some embodiments, when LA1 is a cleavable linker, LA1 comprises an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu γGlu, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl.In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LE1 is a cleavable linker, LE1 comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl.In some embodiments, the amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) is an amino acid residue derived from Gly.In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LE1 is a cleavable linker, LE1 comprises at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, and further optionally comprises one to eight OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LE1 is a non-cleavable linker, LE1 is selected from EESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , when LE1 is a cleavable linker, LE1 is ESL1-R5 wherein R5 is selected from H and C1-4alkyl.In some embodiments, in the compound of in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LA1 is γGlu1-3- (OEG-R1) 2-8 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by γGlu group and LE1 is selected from ESL1-R5, SSL1-R5, ESL2-R5 and ESL3-R5wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, in the compound of in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LE1 is ESL1-R5 wherein R5 is selected from H and C1-4alkyl.In some embodiments, in the compound in the compound of in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , LA1 comprises an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu or γGlu, and OEG-R5, wherein R5 is selected from H and C1-4alkyl, and LE1 comprises one to four OEG-R1, wherein R1 is selected from H and CH3. In some embodiments, the amino acid covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) is an amino acid derived from Gly.In some embodiments, a is 1, b, c, d and e are all 0, F is A and F’ is E, A is A1——LA; E isE1——LE; LA is LA1 and LE is LE1 and the compound of Formula I is a compound of Formula I (ii) ,wherein:Z, T, A1, E1, LA1, LE1 and LZ are as defined in Formula I.In some embodiments, at least one of LA1, LE1 and LZ1 is a cleavable linker. In some embodiments, one of LA1, LE1 and LZ1 is a cleavable linker.In an exemplary embodiment, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group, a glucose-dependent insulinotropic peptide receptor (GIP-R) binding group, and / or a B7-H3 binding group, and the compound of compound of Formula I (ii) is a compound of Formula I (ii) -A, Formula I (ii) -A (A) , Formula I (ii) - (A) (B) , and Formula I (ii) - (A) (C) , respectively,whereinZGIP / GLP / B7H3 is as defined in Formula I-A;ZGIPis as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;ZB7H3 is as defined in Formula I-A (C) ; andA1, E1, LA1, LE1 and LZ are as defined in Formula I.In some embodiments, the compound of Formula I (ii) -A, Formula I (ii) -A (A) , Formula I (ii) -A (B) , and Formula I (ii) -A (C) comprises at least one cleavable linker. In an exemplary embodiment, A1 is selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H and unsubstituted or substituted C (O) C14-18alkyl. In an exemplary embodiment, A1 is selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H. In an exemplary embodiment, A1 is selected from C (O) C12-18alkyleneCO2H. In an exemplary embodiment, A1 is selected from C (O) C14-18alkyleneCO2H. In an exemplary embodiment, A1 is selected from C (O) C16alkyleneCO2H and C (O) C18alkyleneCO2H.Accordingly, in an exemplary embodiment, A1 is selected from C (O) C14-18alkyleneCO2H and the compound of I (ii) is a compound of Formula I (ii) (C) ,whereink is an integer from 10 to 20, andZ, T, E1, LA1, LE1 and LZ are as defined in Formula I. In some embodiments, in the compound of Formula I (ii) (C) , Z is a GIP-R binding group, a GLP-1R binding group, and / or a B7-H3 binding group, and the compound of Formula I (ii) (C) is a compound of Formula I (ii) -A (A) (C) , Formula I (ii) -A (B) (C) and Formula I (ii) -A (C) (C) respectively,whereinZGIP / GLP is as defined in Formula I-A;ZGIP is as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;ZB7H3 is as defined in Formula I-A (C) ; andT, E1, LA1, LE1 and LZ are as defined in Formula I,k is an integer from 10 to 20.In some embodiments, in the compound of Formula I (ii) (C) , of Formula I (ii) -A (A) (C) , Formula I (ii) -A (B) (C) and Formula I (ii) -A (C) (C) , at least one of LA1 and LE1 is a cleavable linker. In some embodiments, k is 14 to 18. In some embodiments, k is 16 to 18. In some embodiments, k is 16 or 18.In an exemplary embodiment, E1 is chelating group derived from a chelating agent selected from DOTA and DOTAGA.In some embodiments, T is a branching group that is at least trivalent comprising at least a first terminal functionality, a second terminal functionality and a third terminal functionality, which are the same or different and bind to LZ (or alternatively Z) , LA1 (or A1) and LE1 (or alternatively E1) , respectively. In an exemplary embodiment, T is an amino acid residue derived from lysine or DAB. In an exemplary embodiment, T is an amino acid residue derived from lysine.In an exemplary embodiment, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , and I (ii) -A (C) (C) , T is an amino acid residue derived from lysine. Therefore, in exemplary embodiments, the compound of Formula I (ii) is a compound of Formula I (ii) (D) or Formula I (ii) (E) ,whereinZ, A1, E1, LA1, LE1 and LZ are as defined in Formula IIn some embodiments, the compound of Formula I (ii) (D) or I (ii) (E) comprises at least one cleavable linker.In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , one of LA1, LE1 and LZ is a cleavable linker. In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , LZ is selected from a direct bond and a non-cleavable linker, LE1 is a non-cleavable linker and LA1 is a cleavable linker. In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , LZ is selected from a direct bond and a non-cleavable linker, LA1 is a non-cleavable linker and LE1 is a cleavable linker. In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , LE1 is selected from a direct bond and a non-cleavable linker, LA1 is a non-cleavable linker and LZ is a cleavable linker.In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , each cleavable linker independently is as defined in Formula I. In some embodiments, each non-cleavable linker independently is as defined in Formula I.In an exemplary embodiment, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , the non-cleavable linker comprises one or more groups independently selected from naturally occurring amino acid residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl , Sec or PCL, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino; amino acids residues derived from modified amino acids selected from DAB and DAP; wherein each R1 is independently selected from H and C1-2alkyl.In an exemplary embodiment, in the compound of Formula I (i) including II (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) and I (i-a) -A (C) (C) , the non-cleavable linker comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1; andwherein each R1 is independently selected from H and C1-2alkyl.In exemplary embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , the non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; (Ava-R1) ; (Aoc-R1) ; (Aun-R1) ; andwherein each R1 is independently selected from H and C1-2alkyl.In an exemplary embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LA1 is a non-cleavable linker, LA1 is independently γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3. In some embodiments, in the compound of in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LA1 is a non-cleavable linker, LA1 is independently γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA is covalently linked to A1 by γGlu group, In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LA1 is a non-cleavable linker, LA1 is γGlu1-3- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by γGlu group. In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LA1 is a non-cleavable linker, LA1 is independently γGlu1- (OEG-R1) 2-6 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by the γGlu group.In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LE or LZ is a non-cleavable linker, LE1 or LZ independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1; andwherein each R1 is independently selected from H and C1-2alkyl. In some embodiments, LE1 comprises one or more such as one to eight, one to seven, one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3. In some embodiments, LZ comprises one or more such as one to eight, one to seven, one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3.In exemplary embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , each cleavable linker independently comprises at least one of one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; or an enzymatically cleavable peptide sequence selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys; and further optionally comprises one to fifteen groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LA1 is a cleavable linker, each LA1 independently comprises an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl. In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LA1 is a cleavable linker, each LA independently comprises an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu γGlu, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl.In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LE1 or LZ is a cleavable linker, LE1 or LZ independently comprise at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl.In some embodiments, the amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) is an amino acid residue derived from Gly.In some embodiments, in the compounds of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LE1 or LZ is a cleavable linker, LE1 or LZ independently comprise at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, and further optionally comprises one or more such as one to eight OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compounds of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LE1 is a non-cleavable linker, LE1 is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , when LE1 is a cleavable linker, LE is ESL1-R5 wherein R5 is selected from H and C1-4alkyl.In some embodiments, in the compound of Formula I (ii) including I (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , LA1 is γGlu1-3- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by γGlu group, LE1 independently is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, and further optionally comprises one to eight OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl, and LZ is selected from a direct bond and a non-cleavable linker comprising one to six OEG-R1, wherein R1 is selected from H and CH3.In some embodiments, a is 1, b and c are both 0, F is A and F’ is E, A isA1——LA; E isE1——LE; and d and e are selected from 0 and 1, and the compound of Formula I is a compound of Formula I (iii) ,whereinZ, TA, TE, T, LA1, LA2, LA3, LE1, LE2, LE3, LZ, A1, A2, E1 and E2 are as defined in Formula I; and d and e are independently selected from 0 and 1.In some embodiments, at least one of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is a cleavable linker.In an exemplary embodiment, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group, a glucose-dependent insulinotropic peptide (gastric inhibitory peptide, GIP) receptor (GIP-R) binding group, a B7-H3 binding group, and the compound of compound of Formula I (iii) is a compound of Formula I (iii) -A, Formula I (iii) -A (A) , Formula I (iii) -A (B) , and Formula I (iii) -A (C) , respectively,whereinZGIP / GLP / B7H3 is as defined in Formula I-A;ZGIP is as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;ZB7H3 is as defined in Formula I-A (C) ; andA1, A2, E1, E2, LA1, LA2, LA3, LE1, LE2, LE3, LZ , TA, TE , T, e and f are as defined in Formula I (iii) . In some embodiments, the compound of Formula (iii) comprises at least one cleavable linker. In an exemplary embodiment, A1 and A2 are independently selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H and unsubstituted or substituted C (O) C14-18alkyl. In an exemplary embodiment, A1 and A2 are independently from unsubstituted or substituted C (O) C12-18alkyleneCO2H. In an exemplary embodiment, A1 and A2 are independently C (O) C12-18alkyleneCO2H. In an exemplary embodiment, A1 and A2 is selected from C (O) C14-18alkyleneCO2H and Z is a GIP-R binding group, a GLP-1R binding group or a B7-H3 binding group. In some embodiments, A1 and A2 are the same.In an exemplary embodiment, E1 and E2 are independently selected form a chelating group derived from a chelating agent selected from DOTA and DOTAGA. In an exemplary embodiment, E1 and E2 are independently selected form a chelating group derived from a chelating agent selected from DOTA. In some embodiments, E1 and E2 are the same.In some embodiments, T is a branching group that is at least trivalent comprising at least a first terminal functionality, a second terminal functionality and a third terminal functionality, which are the same or different and bind to LZ (or alternatively Z) , LA2 (or alternatively LA2 or A2) and LE1 (or alternatively LE2 or E1) , respectively. In an exemplary embodiment, T is lysine or DAB. In an exemplary embodiment, T is lysine.In some embodiments, each of TA and TE is independently a branching group that is at least trivalent comprising at least a first terminal functionality, a second terminal functionality and a third terminal functionality, which are the same or different and linked to LA1, LA2 and LA3 (or alternatively A1 and T) , and LE1, LE2 and LE3 (or alternatively E1 and T) , respectively. In some embodiments, each of TA and TE is independently a branching group that is at least trivalent comprising at least a first terminal functionality, a second terminal functionality and a third terminal functionality, which are the same or different and linked to LA1, LA2 and LA3 (or alternatively A1 and T) , and LE1, LE2 and LE3 (or alternatively E1 and T) , respectively to form an amide group, a thiourea groups, a urea or a thioamide group. In some embodiments, each of TA and TE is independently a branching group that is at least trivalent comprising at least a first terminal functionality, a second terminal functionality and a third terminal functionality, which are the same or different and linked to LA1, LA2 and LA3 (or alternatively A1 and T) , and LE1, LE2 and LE3 (or alternatively E1 and T) , to form an ester group, a thioester group, a carbonate group, a carbamate group, a disulfide bond, a hydrazone group, or a oxime group such as a ketoxime or aldoxime is further formed. In some embodiments, each of TA and TEis independently selected from an amino acid residue derived from lysine and / or glutamine, DAB and a trimesic acid residue, In some embodiments, each of TA and TE is independently selected from an amino acid residue derived from lysine and a trimesic acid residue. In some embodiments, each of TA and TE is independently selected from an amino acid residue derived from lysine.In some embodiments, in the compound of Formula I (iii) including I (iii) -A, I (iii) -A (A) , I (iii) -A (B) , and I (iii) -A (C) , one of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is a cleavable linker. In some embodiments, in the compound of Formula I (iii) including I (iii) -A, I (iii) -A (A) , I (iii) -A (B) , and I (iii) -A (C) , LZ is selected from a direct bond and a non-cleavable linker, one of LE1, LE2 and LE3 is a cleavable linker and each of LA1, LA2 and LA3 is independently selected from a direct bond a non-cleavable linker. In some embodiments, in the compound of Formula I (iii) including I (iii) -A, I (iii) -A (A) I (iii) -A (B) , , and I (iii) -A (C) LZ is a cleavable linker, and LA1, LA2, LA3, LE1, LE2 and LE3 are independently selected from a direct bond and a non-cleavable linker. In some embodiments, in the compound of Formula I (iii) including I (iii) -A, I (iii) -A (A) , I (iii) -A (B) , and I (iii) -A (C) , LZ is selected from a direct bond and a non-cleavable linker, LE1, LE2 and LE3 are independently selected from a direct bond and a non-cleavable linker and one of LA1, LA2 and LA3 is a cleavable linker.In some embodiments, in the compound Formula I (iii) including I (iii) -A, I (iii) -A (A) , I (iii) -A (B) , and I (iii) -A (C) , each cleavable linker independently is as defined in Formula I. In some embodiments, each non-cleavable linker independently is as defined in Formula I.In some embodiments, in the compound of Formula I (iii) , d is 1 and e is 0 and the compound of Formula I (iii) is a compound of Formula I (iii-a)whereinZ, A1, A2, E1, LA1, LA2, LA3, LE1, LZ , TA, and T are as defined in Formula I (iii) In some embodiments, the compound of Formula I (iii-a) comprises at least one cleavable linker.In an exemplary embodiment, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group or a glucose-dependent insulinotropic peptide (gastric inhibitory peptide , GIP) receptor (GIP-R) binding group and the compound of compound of Formula I (iii-a) is a compound of Formula I (iii-a) -A, Formula I (iii-a) -A (A) , Formula I (iii-a) -A (B) and Formula I (iii-a) -A (C) , respectively,whereinZGIP / GLP / B7H3 is as defined in Formula I-A;ZGIP is as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;ZB7H3 is as defined in Formula I-A (B) ; andA1, A2, E1, LA1, LA2, LA3, LE1, LZ , TA, and T are as defined in Formula I (iii) .In some embodiments, the compound of Formula I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) , and I (iii-a) -A (C) comprises at least one cleavable linker.In some embodiments, in the compound of Formula I (iii) , Z is a GIP-R binding group, a GLP-1R binding group, and / or a B7-H3 binding group, A1 and A2 are independently C (O) C14-18alkyleneCO2H, and E1 is chelating group derived from a chelating agent selected from DOTA and DOTAGA.In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , one of LA1, LA2, LA3, LE1, and LZ is a cleavable linker. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LZ is selected from a direct bond and a non-cleavable linker, LE1 is a cleavable linker and each of LA1, LA2 and LA3 is independently selected from a direct bond and a non-cleavable linker. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LZ is selected from a direct bond and a non-cleavable linker, LA2 is a cleavable linker and each of LA1, LA2 and LE1 is independently selected from a direct bond and a non-cleavable linker. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LZ is a cleavable linker, and LA1, LA2, LA3 and LE1 are independently selected from a direct bond or non-cleavable linkers.In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , each cleavable linker independently is as defined in Formula I. In some embodiments, each non-cleavable linker independently is as defined in Formula I.In exemplary embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; (Ava-R1) ; (Aoc-R1) ; (Aun-R1) ; andwherein each R1 is independently selected from H and C1-2alkyl.In exemplary embodiments, in the compound of Formula I (ii) including II (ii) -A, I (ii) -A (A) , I (ii) -A (B) , I (ii) -A (C) , I (ii) (C) , I (ii) -A (C) , I (ii) -A (A) (C) , I (ii) -A (B) (C) , I (ii) -A (C) (C) , I (ii) (D) , I (ii) (E) , the non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; (Ava-R1) ; (Aoc-R1) ; (Aun-R1) ; andwherein each R1 is independently selected from H and C1-2alkyl.In exemplary embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) and I (iii-a) -A (B) , each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; (Ava-R1) ; (Aoc-R1) ; (Aun-R1) ; andwherein each R1 is independently selected from H and C1-2alkyl.In an exemplary embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA2 or LA3 is a non-cleavable linker, LA2 and LA3 are independently γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3. In an exemplary embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA2 or LA3 is a non-cleavable linker, LA2 and LA3 are independently γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA2 and LA3 is covalently linked to A1 and A2 respectively by γGlu group, In an exemplary embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) and I (iii-a) -A (B) , when LA2 or LA3 is a non-cleavable linker, LA2 and LA3 are independently γGlu1-4- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LAis covalently linked to A1 by γGlu group.In some embodiments in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA1, LE1 and / or LZ is a non-cleavable linker, each of LA1, LE1 and LZ independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1; and wherein each R1 is independently selected from H and C1-2alkyl. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LA1, LE1 and LZ independently comprise one to eight, one to seven, one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3. In some embodiments, LA1, LE1 and LZ independently comprise one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3.In exemplary embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) and I (iii-a) -A (B) , each cleavable linker independently comprises at least one of one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; or an enzymatically cleavable peptide sequence selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys; and further optionally comprises one to fifteen groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA1, LZ and / or LE1 is a cleavable linker, LA1, LZ and LE1 independently comprise an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA1, LZ and / or LE1 is a cleavable linker, LA1, LZ and LE1 independently comprises an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, Glu γGlu, and D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl.In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA1, LZ and / or LE1 is a cleavable linker, LA1, LZ and / or LE1 independently comprise at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; and OEG-R5, wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA1, LZ and / or LE1 are a cleavable linker, LA1, LZ and / or LE1 independently comprise at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, and further optionally comprise one or more groups independently selected from naturally occurring amino acid residues derived from Gly and γGlu, and OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LZ is a cleavable linker, LZ is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) and I (iii-a) -A (B) , when LZ is a cleavable linker, LZ is ESL1-R5wherein R5 is selected from H and C1-4alkyl.In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LE1 is a cleavable linker, LE1 is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) and I (iii-a) -A (B) , when LE1 is a cleavable linker, LE1 is ESL1-R5wherein R5 is selected from H and C1-4alkyl.In some embodiments, i in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA1, LZ and / or LE1 is a cleavable linker, LA1, LZ and / LE1 independently comprise an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly and γGlu, D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl. In some embodiments, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , when LA1, LZ and / or LE1 is a cleavable linker, LA2, LZ and / LE1 independently comprise an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) .In an exemplary embodiment, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LA2 and LA3 are independently γGlu1-4- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA2and LA3 are covalently linked to A1 by γGlu group, LA1 and LZ are independently selected from a direct bond and a non-cleavable linker comprising one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3, and LE1 is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, LA2 and LA3 are the same.In an exemplary embodiment, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LA2 and LA3 are independently γGlu1-4- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA2and LA3 are covalently linked to A1 by γGlu group, LA1 and LZ are independently selected from a direct bond and a non-cleavable linker comprising one to six, one to five or one to four OEG-R1, wherein R1 is selected from H and CH3, and LE1 comprises an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprise one or more groups independently selected from naturally occurring amino acid residues derived from Gly and γGlu, D enantiomers thereof; and OEG-R5, wherein R5 is selected from H and C1-4alkyl.In an exemplary embodiment, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LA2 and LA3 are independently γGlu1-4- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA2and LA3 are covalently linked to A1 by γGlu group, LA1 and LE1 are independently selected from a direct bond and a non-cleavable linker comprising one to five or one to four OEG-R1, wherein R1 is selected from H and CH3, and LZ is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, LA2and LA3 are the same.In an exemplary embodiment, in the compound of I (iii) including I (iii-a) -A, I (iii-a) -A (A) , I (iii-a) -A (B) and I (iii-a) -A (C) , LA2and LA3 are independently γGlu1-4- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA2and LA3 are covalently linked to A1 and A2 respectively by γGlu group, LZ and LE1 are independently selected from a direct bond and a non-cleavable linker comprising one to five or one to four OEG-R1, wherein R1 is selected from H and CH3, and LA1 is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly and γGlu, and OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, LA2and LA3 are the same.In some embodiments, a is 1, b is 0, c is 1, d is 0 or 1, e is 0, , F and F’ are both E, E isE1——LE; and since e is 0, LE is LE1 and the compound of Formula I is a compound of Formula I (iv) ,whereinZ, T, E1, LE and LZ are as defined in Formula I; andeach A1 and each LA are as defined in Formula I and each A1 and each LA are the same or different.In some embodiments, at least one LA or LE1 is a cleavable linker.In an exemplary embodiment, Z is a glucagon-like peptide-1 receptor (GLP-1R) binding group, a glucose-dependent insulinotropic peptide (GIP-R) binding group and / or a B7-H3 binding group, and the compound of compound of Formula I (iv) is a compound of Formula I (iv) -A, Formula I (iv) -A (A) , Formula I (iv) -A (B) , and Formula I (iv) -A (C) ,whereinZGIP / GLP / B7H3 is as defined in Formula I-A;ZGIPis as defined in Formula I-A (A) ;ZGLP is as defined in Formula I-A (B) ;ZB7H3 is as defined in Formula I-A (C) ; andeach A1 and each LA are as defined in Formula I and each A1 and each LA are the same or different.In some embodiments, the compound of Formula I (iv) -A, Formula I (iv) -A (A) , Formula I (iv) -A (B) , and Formula I (iv) -A (C) comprises at least one cleavable linker.In an exemplary embodiment, in the compound of Formula I (iv) , each A1 is independently selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H and unsubstituted or substituted C (O) C14-18alkyl. In an exemplary embodiment, each A1 is independently selected from unsubstituted or substituted C (O) C12-18alkyleneCO2H. In an exemplary embodiment, each A1 is independently selected from C (O) C12-18alkyleneCO2H. In an exemplary embodiment, each A1 is independently selected from C (O) C14-18alkyleneCO2H. In an exemplary embodiment, each A1 is independently selected from C (O) C16alkyleneCO2H and C (O) C18alkyleneCO2H.In some embodiments, in the compound of Formula I (iv) , Z is a GIP-R binding group or a GLP-1R binding group and each A1 is independently C (O) C14-18alkyleneCO2H.In an exemplary embodiment, E1 is chelating group derived from a chelating agent selected from DOTA and DOTAGA.In some embodiments, T is a branching group that is at least trivalent comprising at least a first terminal functionality, a second terminal functionality and a third terminal functionality, which are the same or different and bind to LZ (or alternatively Z) , LA (or A1) respectively. In an exemplary embodiment, T is an amino acid residue derived from lysine.In some embodiments, in the compound of Formula I (iv) -A, Formula I (iv) -A (A) and / or Formula I (iv) -A (B) , d is 0, and therefore LA is LA1 and the compound of Formula I (iv) is a compound of Formula I (iv-a) ,whereinZ, T, E1, LE1 and LZ are as defined in Formula I; andeach A1 and each LA1 are as defined in Formula I and each A1 and each LA1 are the same or different.In some embodiments, the compound of Formula I (iv-a) comprises at least one cleavable linker.In some embodiments, in the compound of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , one of LZ and LE1 is a cleavable linker. In some embodiments, Formula I (iv) including I (iv) -A, I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , LZ is selected from a direct bond and a non-cleavable linker and LE1 is a cleavable linker.In some embodiments, Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , each cleavable linker independently is as defined in Formula I. In some embodiments, Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , each non-cleavable linker independently is as defined in Formula I.In an exemplary embodiment, Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) and I (iv-a) , each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Ala, Arg, Asn, Asp, Cys, Gln, Glu, γGlu, Gly, His, Ile, Leu, Lys, εLys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, Val, Pyl , Sec or PCL, D enantiomers of the naturally occurring amino acid resides, N-methyl amino acids residues of the naturally occurring amino; amino acids residues derived from modified amino acids selected from DAB and DAP; wherein each R1 is independently selected from H and C1-2alkyl. In an exemplary embodiment, in the compound of Formula I (i) including I (i-a) , I (i-a) -A, I (i-a) -A (A) , I (i-a) -A (B) , I (i-a) -A (C) , I (i-a) - (C) , I (i-a) -A (C) , I (i-a) -A (A) (C) , I (i-a) -A (B) (C) , and I (i-a) -A (C) (C) , each non-cleavable linker comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1; andwherein each R1 is independently selected from H and C1-2alkyl.In exemplary embodiments, Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) and I (iv-a) , each non-cleavable linker independently comprises one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; (Ava-R1) ; (Aoc-R1) ; (Aun-R1) ; andwherein each R1 is independently selected from H and C1-2alkyl.In an exemplary embodiments, in the compound of Formula I (iv-a) , when LA1 is a non-cleavable linker, each LA1 is independently γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3. In some embodiments, in the compound of Formula I (iv-a) when LA1 is a non-cleavable linker, each LA1 is independently γGlu1-8- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by γGlu group, In some embodiments, in the compounds of Formula I (iv-a) , when LA1 is a non-cleavable linker, LA1 is γGlu1-3- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by γGlu group. In some embodiments, in the compounds of Formula I (iv-a) , when LA1 is a non-cleavable linker, LA1 is independently γGlu1- (OEG-R1) 2-6 wherein R1 is selected from H and CH3, and LA1 is covalently linked to A1 by the γGlu group.In some embodiments, in the compounds of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) and I (iv-a) , when LE1 or LZ is a non-cleavable linker, LE or LZ independently comprise one or more groups independently selected from naturally occurring amino acid residues derived from Glu, γGlu, or Gly, D enantiomers of Glu and γGlu, N-methyl amino acids residues of Glu, γGlu, or Gly; amino acids residues derived from modified amino acids selected from DAB and DAP; OEG-R1; Ava-R1; Aoc-R1; Aun-R1; andwherein each R1 is independently selected from H and C1-2alkyl. In some embodiments, in the compounds of Formula I (iv-a) , LE1 comprises one to four OEG-R1, wherein R1 is selected from H and CH3. In some embodiments, in the compounds of Formula I (iv-a) , LZ comprises one to four OEG-R1, wherein R1 is selected from H and CH3.In exemplary embodiments, in the compounds of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , each cleavable linker independently comprises at least one of one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue derived from Gly covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; or an enzymatically cleavable peptide sequence selected from Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys; and further optionally comprises one to fifteen groups independently selected from naturally occurring amino acid residues derived from Gly, Glu, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compounds of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , when LE1 or LZ is a cleavable linker, LE1 or LZ independently comprise at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, or an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly, γGlu, Lys, Phe, Tyr, and D enantiomers thereof; and OEG-R5, wherein each R5 is independently selected from H and C1-4alkyl.In some embodiments, in the compounds of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , when LE1 or LZ is a cleavable linker, LE1 or LZ independently comprise at least one group selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, and further optionally comprises one to eight OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl. In some embodiments, in the compounds of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , when LE1 is a non-cleavable linker, LE1 is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH. In some embodiments, in the compounds of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , when LE1 is a cleavable linker, LE1 is ESL1-R5.In some embodiments, in the compounds of Formula I (iv) including I (iv) -A, I (iv) -A (A) , I (iv) -A (B) , I (iv) -A (C) , and I (iv-a) , when LE1 or LZ is a cleavable linker, LE1 or LZ independently comprises an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one or more groups independently selected from naturally occurring amino acid residues derived from Gly and γGlu, and OEG-R5, wherein R5 is selected from H and C1-4alkyl. In some embodiments, the amino acid residue is an amino acid residue derived from Gly.In exemplary embodiments, in the compounds of Formula I (iv-a) , each LA1 is independently γGlu1-3- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and each LA1 is covalently linked to A1 by γGlu group, LE1 is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, wherein each R5 is independently selected from H and C1-4alkyl and LZ is selected from a direct bond and a non-cleavable linker comprising one to six OEG-R1, wherein R1 is selected from H and CH3.In exemplary embodiments, in the compound of Formula I (iv-a) , each LA1 is independently γGlu1-3- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and each LA1 is covalently linked to A1 by γGlu group, LZ independently is selected from ESL1-R5, SSL1-R5, ESL2-R5, ESL3-R5, ESL1, ESL2, ESL3, 4hPA-Gly, 5hPA-Gly, 4hBA-Leu, 6hHA-Gly, Gly-5aPOH, I-PADT, or SA-5aPOH, and further optionally comprises one to eight OEG-R5 groups wherein each R5 is independently selected from H and C1-4alkyl, and LE1 is selected from a direct bond and a non-cleavable linker comprising one to three OEG-R1, wherein R1 is selected from H and CH3.In exemplary embodiments, in the compound of Formula I (iv-a) , each LA1 is independently γGlu1-3- (OEG-R1) 1-8 wherein R1 is selected from H and CH3, and each LA1 is covalently linked to A1 by γGlu group, LZ comprises an amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) ; and further optionally comprises one to eight groups independently selected from amino acid residues, and OEG-R5, wherein R5 is selected from H and C1-4alkyl, and LE1 is selected from a direct bond and a non-cleavable linker comprising one to three OEG-R1,wherein R1 is selected from H and CH3.In some embodiments, the amino acid residue covalently linked to one of C (O) C1-20alkyleneO and OC1-20alkyleneC (O) to form a cleavable moiety selected from C (O) O and OC (O) is an amino acid residue derived from Gly.In some embodiments, each non-cleavable linker independently comprises one to twenty, one to fifteen, one to twelve, one to ten, one to eight, one to six, two to ten, two to eight group. In some embodiments, each cleavable linker independently comprises one to twenty, one to fifteen, one to twelve, one to ten, one to eight, one to six, two to ten, two to eight group.In embodiments, the compound of Formula I is selected from the following list of compounds. The amino acids set out in lower case are D-amino acids.Table 1. Exemplary compounds of the present applicationThe chelating binding group is capable of complexing a radionuclide. Therefore, in some embodiments, the compound of Formula I further comprises a radioisotope complexed to the chelating binding group.Accordingly, the present application also includes a radionuclide complex, comprising a compound of the application, and one or more radionuclides.In some embodiments, the one or more radionuclides are radioactive isotopes of As, K, Sc, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ga, Ge, Rb, Sr, Y, Zr, Nb, Tc, Rh, Pd, In, Sn, Sb, Zn, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po, Fr, Pm, lanthanide (such as La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) , an actinide (such as Ac, Th, U) , Mg, Al, Ca, Cd, and Ba. In some embodiments, the radionuclide is lanthanide, and the lanthanide is Lu, Sm, Ho, or Tb. In some embodiments, the radionuclide is actinide and the actinide is Ac, Th, or U.In some embodiments, the one or more radionuclides complexed with the chelating group are each independently selected from the group consisting of199Tc, 99mTc, 188Re, 186Re, 153Sm, 66Ga, 67Ga, 68Ga, 111In, 123In, 59Fe, 63Zn, 52Fe, 52Mn, 45Ti, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 82Rb, 195mPt, 191mPt, 193mPt, 117mSn, 89Zr, 177Lu, 18F, 188Re, 186Re, 153Sm, 66Ho, 86Y , 87Y , 90Y, 89Sr, 153Gd, 159Gd, 225Ac, 212Bi, 213Bi, 198Au, 199Au, 193mPt, 197Pt, 103Pd, 109Pd, 105Rh, 101mRh, 103mRh, 223Ra, 224Ra, 97Ru, 227Th, 229Th, 161Tb, 149Tb, 203Pb, 212Pb, 201TI, 119Sb, 58mCo, 55 Co, 57Co, 47Sc, 149Pm, 142Pr, 161Ho, 166Ho, 175Yb, and 51Cr.In some embodiments, the compound provided herein may be used for imaging, and the one or more radionuclides complexed with the chelating group for use in imaging are selected from the group consisting of99mTc, 188Re, 186Re, 153Sm, 66Ga, 67Ga, 68Ga, 111In, 59Fe, 63Zn, 52Fe, 52Mn, 45Ti, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 82Rb, 198Au, 199Au, 195mPt, 191mPt, 193mPt, 117mSn, 89Zr, 177Lu, 203Pb, 44Sc, 51Cr, 101mRh, and 166Ho.In some embodiments, the compound provided herein may be used for killing a cell or treating a disease, and the one or more radionuclides for killing a cell or treating a disease are selected from the group consisting of188Re, 186Re, 153Sm, 66Ho, 90Y, 89Sr, 111In, 153Gd, 225Ac, 212Bi, 213Bi, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 198Au, 99Au, 195mPt, 193mPt, 197Pt, 117mSn, 103Pd, 105Rh, 103mRh, 177Lu, 223Ra, 224Ra, 227Th, 229Th, 149Tb, 161Tb, 203Pb, 212Pb, 201TI, 119Sb, 58mCo, 47Sc, 149Pm, 161Ho, 159Gd, 142Pr, 166Ho, and 175Yb. In some embodiments, the one or more radionuclides for use in therapy are selected from the group consisting of 177Lu, 212Pb, and 225Ac. In some embodiments, the radionuclides for killing a cell or treating a disease is 177Lu or 225Ac. In some embodiments, the one or more radionuclides for killing a cell or treating a disease is 177Lu. In some embodiments, the one or more radionuclides for killing a cell or treating a disease is 225Ac.Any compound or structure given herein, is also intended to represent free form as well as salt form of the compound or structure. In some embodiments, the compound or structure is in neutral form or free form. In some embodiments, the compound or structure is a salt of the compound or structure as provided herein, such as a pharmaceutically acceptable salt. “Pharmaceutically acceptable salts” are those salts which retain at least some of the biological activity of the free (non-salt) compound and which can be administered as drugs or pharmaceuticals to an individual. Such salts, for example, include: (1) acid addition salts, formed with inorganic acids such as hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, and the like; or formed with organic acids such as acetic acid, oxalic acid, propionic acid, succinic acid, maleic acid, tartaric acid and the like; (2) salts formed when an acidic proton present in the parent compound either is replaced by a metal ion, e.g., an alkali metal ion, an alkaline earth ion, or an aluminum ion; or coordinates with an organic base. Acceptable organic bases include ethanolamine, diethanolamine, triethanolamine and the like. Acceptable inorganic bases include aluminum hydroxide, calcium hydroxide, potassium hydroxide, sodium carbonate, sodium hydroxide, and the like. Further examples of pharmaceutically acceptable salts include those listed in Berge et al., Pharmaceutical Salts, J. Pharm. Sci. 1977 Jan; 66 (1) : 1-19. Pharmaceutically acceptable salts can be prepared in situ in the manufacturing process, or by separately reacting a purified compound of the disclosure in its free acid or base form with a suitable organic or inorganic base or acid, respectively, and isolating the salt thus formed during subsequent purification.Also provided are stereoisomers, mixture of stereoisomers, and tautomers, of the compounds, structures, or conjugates described herein, such as any of the formulae described herein.III. Compositions and Kits of the ApplicationThe compounds and complexes of the present application are suitably formulated in a conventional manner into compositions using one or more carriers. Accordingly, the present application also includes a composition comprising one or more compounds or complexes of the application and a carrier. The compounds or complexes of the application are suitably formulated into pharmaceutical compositions for administration to subjects in a biologically compatible form suitable for administration in vivo. Accordingly, the present application further includes a pharmaceutical composition comprising one or more compounds or complexes of the application and a pharmaceutically acceptable carrier. In embodiments of the application the pharmaceutical compositions are used in the treatment of any of the diseases, disorders or conditions described herein.The present application also includes a kit comprising: (1) one or more compounds of Formula I as defined above, and (2) instructions for administration of the one or more compounds of Formula I, to a subject in need thereof.The present application also includes a kit comprising: (1) one or more compounds of Formula I as defined above, and (2) one or more radioisotope as defined above, and (3) optionally instructions for administration of the one or more compounds of Formula I, to a subject in need thereof and the radioisotope to a subject in need thereof.The present application also includes a kit comprising: (1) one or more complexes of the application as defined above, and (2) instructions for administration of the one or more compounds complexes to a subject in need thereof.In some embodiments, the one or more compounds of Formula I as defined above, the one or more complexes as defined above, or the one or more radioisotope as defined above and are each present in the kits in one or more pharmaceutical compositions.In some embodiments, the pharmaceutical compositions comprising the one or more compounds of Formula I as defined above, the one or more complexes as defined above, or the one or more radioisotope as defined above are formulated for parenteral administration as described below. In some embodiments, the parenteral administration is by injection.In some embodiments, the kits are for use in imaging. In some embodiments, the kits are for use in therapy. In some embodiments, the kits are for use in treating cancer. In some embodiments, the kits are adapted and / or arranged to carry out any method of the present application. Therefore, the present application also includes pharmaceutical packages or kits adapted and arranged to carry out any method of the present application.IV. Methods and Uses of the ApplicationThe present application also includes a method of treating a disease or disorder comprising administering a therapeutically effective amount of one or more compounds or complexes of the application to a subject in need thereof. The present application also includes a use of one or more compounds or complexes of the application for treatment of a disease or disorder as well as a use of one or more compounds or complexes of the application for the preparation of a medicament for treatment of a disease or disorder. The application further includes one or more compounds or complexes of the application for use in treating a disease or disorder.In one embodiment, a target of the target binding group of the compound or complex is present on disease cells. Indeed, the presence and / or overexpression of receptors on the cell surface is a hallmark of many disease associated cells including cancer cells. According, in another embodiment, a target of the target binding group (for example a cell surface receptor) is present on cancer cells and disease or disorder is cancer. For example, in one embodiment, of the target binding group is glucagon-like peptide 1 (GLP-1) receptor and the disease or disorder is a neuroendocrine tumor, optionally an insulinoma tumor. In another embodiment, the target of the target binding group is gastric inhibitory polypeptide (GIP) receptor and the disease or disorder is a neuroendocrine tumor.In one embodiment, the disease or disorder is cancer.In one embodiment, the cancer is a neuroendocrine tumor.In an embodiment, the cancer is a glucagon-like peptide 1 (GLP-1) receptor or gastric inhibitory polypeptide (GIP) receptor positive cancer. In an embodiment, the glucagon-like peptide 1 (GLP-1) receptor or gastric inhibitory polypeptide (GIP) receptor positive cancer positive cancer is a neuroendocrine tumor. As used herein, the term “glucagon-like peptide 1 (GLP-1) receptor positive cancer” or “gastric inhibitory polypeptide (GIP) receptor positive cancer refers to a cancer where the cancer cells express glucagon-like peptide 1 (GLP-1) receptor or gastric inhibitory polypeptide (GIP) receptor, respectively, at a higher level than a corresponding non-cancerous cells.Efficaciousness of treatment is determined in association with any known method for diagnosing or treating the particular cancer. Alleviation of one or more symptoms of the cancer indicates that the compound or complex confers a clinical benefit.As used herein, “treating a cancer” includes, but is not limited to, reversing, alleviating or inhibiting the progression of the cancer or symptoms or conditions associated with the cancer. “Treating the cancer” also includes extending survival in a subject. Survival is optionally extended by at least 1, 2, 3, 6 or 12 months, or at least 2, 3, 4, 5 or 10 years over the survival that would be expected without treatment with a cytotoxic agent or composition as described herein. “Treating the cancer” also includes reducing tumour mass and / or reducing tumour. Optionally, tumour mass and / or tumour burden is reduced by at least 5, 10, 25, 50, 75 or 100%following treatment with a cytotoxic agent or composition as described herein. “Treating the cancer” also includes reducing the aggressiveness, grade and / or invasiveness of a tumour.The application also includes a method of inhibiting proliferative activity in a cell, comprising administering an effective amount of one or more compounds or complexes of the application to the cell. The present application also includes a use of one or more compounds or complexes of the application for inhibition of proliferative activity in a cell as well as a use of one or more compounds one or more compounds or complexes of the application for the preparation of a medicament for inhibition of proliferative activity in a cell. The application further includes one or more compounds one or more compounds or complexes of the application for use in inhibiting proliferative activity in a cell.The present application also includes a method of imaging a tissue in a subject by administering an imaging effective amount of one or more compounds or complexes of the application for use in imaging to a subject in need thereof.The present application also includes a use of one or more compounds or complexes of the application for use in imaging for imaging a tissue well as a use of one or more compounds or complexes of the application comprising a radionuclide for use in imaging for the preparation of a medicament for imaging a tissue. The application further includes one or more compounds or complexes of the application comprising a radionuclide for use in imaging for use in imaging a tissue.The present application also includes a method of diagnosing cancer in subject by administering a diagnostic effective amount of one or more compounds or complexes of the application to a subject in need thereof and applying an imaging technique to detect emitted gamma rays. The present application also includes a use of one or more compounds or complexes of the application for diagnosing cancer in well as a use of one or more compounds or complexes of the application for diagnosing cancer. The application further includes one or more compounds or complexes of the application comprising a radionuclide for use in imaging for use in diagnosing cancer.In an embodiment, the subject is a mammal. In another embodiment, the subject is human. In an embodiment, the subject is a non-human animal. In an embodiment, the subject is canine. In an embodiment, the subject is feline. Accordingly, the compounds, methods and uses of the present application are directed to both human and veterinary diseases, disorders and conditions.IV. Methods of Preparing the Compounds of the ApplicationCompounds and / or complexes of the present application or comparator compounds can be prepared by various synthetic processes. The choice of particular structural features and / or substituents may influence the selection of one process over another. The selection of a particular process to prepare a given compound and / or complexes of the present application or comparator compounds I is within the purview of the person of skill in the art. Some starting materials for preparing compounds of the present application are available from commercial chemical sources. Other starting materials, for example as described below, are readily prepared from available precursors using straightforward transformations that are well known in the art.In some embodiments, the compound of Formula I or comparator compound is prepared all or in part using solid phase peptide synthesis (SPPS) or solution phase coupling techniques known in the art, for example, using the synthetic procedures found in Stewart and Young, 1984, Solid Phase Synthesis, Second Edition, Pierce Chemical Co., Rockford, Ill.; Fields and Noble, 1990, "Solid phase peptide synthesis utilizing 9-fluorenylmethyloxycarbonyl amino acids, " Int. J. Pept. Protein Res. 35: 161-214; Geysen et al., 1987, J. Immunol. Methods 102: 259-274.Accordingly, in some embodiments, in SPPS, an Nα -protected linker group, such as a tert-butoxycarbonyl (Boc) or 9-fluorenylmethyloxycarbonyl (Fmoc) amino acid linker group, is activated at the α-carbonyl and coupled with the deprotected Nα functionality of the solid phase support. The newly added Nα -protected linker group is then deprotected and coupled to the next Nα -protected linker group if necessary until the final cleavage step. It would be appreciated by the person skilled in the art the chemistry of the coupling, deprotection, and final cleavage step of the linker from the solid phase support depends on choice of α N-protecting group. In some embodiments, the cleavage is accomplished by treatment with acid, for example trifluoro acetic acid (TFA) optionally in the presence of scavenger reagents such as triisopropylsilane. In some embodiments, when the α N-protecting group is Fmoc, cleavage in acid will also result in deprotection of the side chains.Therefore, in an exemplary embodiment, the compounds of Formula I or comparator compounds are prepared using fluorenylmethyloxycarbonyl (Fmoc) solid-phase peptide synthesis chemistry known in the art. Accordingly, in some embodiments, the compounds of Formula I or fragments therefore are prepared, manually or by using automated multiple solid-phase peptide synthesizer, using a Wang resin, Rink Amide-MBHA or equivalent resin and Fmoc-protected linker group derivatives with suitable side-chain protections such as Fmoc-Ala-OH, Fmoc-Arg (Pbf) -OH, Fmoc-Asn (Trt) -OH, Fmoc-Asp (OtBu) -OH, Fmoc-Cys (Trt) -OH, Fmoc-Gln (Trt) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Gly-OH, Fmoc-His (Trt) -OH, Fmoc-Ile-OH, Fmoc-Leu-OH, Fmoc-Lys (Boc) -OH, Fmoc-Met-OH, Fmoc-Phe-OH, Fmoc-Pro-OH, Fmoc-Ser(tBu) -OH, Fmoc-Thr (tBu) -OH, Fmoc-Trp (Boc) -OH, Fmoc-Tyr (tBu) -OH, Fmoc-Val-OH, Fmoc-Lys (Mtt) -OH, Fmoc-Aib-OH, Fmoc-Nle-OH, Fmoc-8-amino-3, 6-dioxaoctanoic acid (Fmoc-OEG-OH) , Fmoc-tranexamic acid (Fmoc-Trx-OH) , Fmoc-Glu-OtBu, octadecanedioic acid mono-tert-butyl ester, nonadecanedioic acid mono-tert-butyl ester, eicosanedioic acid mono-tert-butyl ester and tetradecanedioic acid mono-tert-butyl ester. The resin is swelled using a suitable solvent such as combination of dichloromethane (DCM) and (DMF) . Prior to each coupling step the base-labile Nα-protecting group Fmoc is cleaved off from the Fmoc protected linker groups using a suitable base such as piperidine in a suitable solvent such as DMF for time to cleave to cleave the Fmoc protecting group, for example, about 10-15 min. The resin is then subsequently washed with a suitable solvent such as the DMF to, for example, remove piperidine. An excess amount of the Fmoc-linker group (e.g., 4 to 8 molar equivalent) is then coupled using coupling agents known in the art, for example, N, N'-diisopropylcarbodiimide (DIC) and ethyl cyanohydroxyiminoacetate (Oxyma, e.g Oxyma ) or (Benzotriazol-1-yloxy) tripyrrolidinophosphonium hexafluorophosphate (PyBOP) and (1-Hydroxybenzotriazole (HOBt) , in a suitable solvent such as DMF for about 1 to about 2 hours and then further washed with a suitable solvent, such as DMF. The coupling step is repeated once for each linker group.When necessary, the methyltrityl (Mtt) group of the Fmoc-Lys (Mtt) -OH (i.e., N-α-Fmoc-N-ε-4-methyltrityl-L-lysine) linker group or the deprotected Lys (Mtt) -residue in the linker fragment is removed by treating the group or residue with hexafluoroisopropanol (HFIP) in a suitable solvent such as dichloromethane (DCM) (e.g. about 30%v / v) for suitable amount of time, for example, about 1 hour, followed by washing the resin with the suitable solvent and repeating the treatment with HFIP in DCM with a final washing with DCM after treatment.After coupling, the compound of Formula I, comparator compound or fragment thereof is cleaved from the solid phase by treatment with a suitable acid for example, trifluoroacetic acid (TFA) and optionally in the presence of a trialkylsilane such as triisopropylsilane (TIP) and water and then precipitated with a suitable solvent such as diethyl ether. The product is dissolved in a suitable solvent such as water and acetonitrile and purified using high-performance liquid chromatography (HPLC) such as reversed phase HPLC using a suitable solvent or solvent mixture such as water with acetonitrile and TFA with an increasing gradient of acetonitrile. Relevant fractions are checked by analytical UPLC. Fractions containing the pure target compounds are pooled and freeze-dried.The chelating group such as DOTA is conjugated to the linker fragment, for example, ε-amine of a lysine residue of the linker fragment or the linker fragment covalently linked to the tumour binding group and / or potency enhancing group using active ester chemistry known in the art. For example, DOTA is combined with the linker fragment in the presence of a base such as an amine.The chelating groups can be synthesized through methods known in the art or are commercially available. For example, DOTA is available from Sigma-Aldrich (St. Louis, Missouri, United States) .In some embodiments, when the linker comprises a triazole (i.e., X3 is triazole) , the triazole ring is incorporated in the linker group by reacting a suitable azide precursor compound with a suitable acetylene precursor compound using click reaction conditions (e.g., Tetrahedron 2016, 72, 5257-5283; Tetrahedron 2016, 72, 6136-6141) .Throughout the processes described herein it is to be understood that, where appropriate, suitable protecting groups will be added to, and subsequently removed from, the various reactants and intermediates in a manner that will be readily understood by one skilled in the art. Conventional procedures for using such protecting groups as well as examples of suitable protecting groups are described, for example, in “Protective Groups in Organic Synthesis” , T.W. Green, P.G.M. Wuts, Wiley-Interscience, New York, (1999) . It is also to be understood that a transformation of a group or substituent into another group or substituent by chemical manipulation can be conducted on any intermediate or final product on the synthetic path toward the final product, in which the possible type of transformation is limited only by inherent incompatibility of other functionalities carried by the molecule at that stage to the conditions or reagents employed in the transformation. Such inherent incompatibilities, and ways to circumvent them by carrying out appropriate transformations and synthetic steps in a suitable order, will be readily understood to one skilled in the art. Examples of transformations are given herein, and it is to be understood that the described transformations are not limited only to the generic groups or substituents for which the transformations are exemplified. References and descriptions of other suitable transformations are given in “Comprehensive Organic Transformations -A Guide to Functional Group Preparations” R. C. Larock, VHC Publishers, Inc. (1989) . References and descriptions of other suitable reactions are described in textbooks of organic chemistry, for example, “Advanced Organic Chemistry” , March, 4th ed.McGraw Hill (1992) or, “Organic Synthesis” , Smith, McGraw Hill, (1994) . Techniques for purification of intermediates and final products include, for example, straight and reversed phase chromatography on column or rotating plate, recrystallisation, distillation and liquid-liquid or solid-liquid extraction, which will be readily understood by one skilled in the art.The following non-limiting examples are illustrative of the present application.EXAMPLESExample 1. Synthesis of Exemplary Compounds of the Application1.1 ReagentsThe Fmoc-protected amino acid derivatives used, unless specifically stated otherwise, were the standard recommended: Fmoc-Ala-OH, Fmoc-Arg (Pbf) -OH, Fmoc-Asn (Trt) -OH, Fmoc-Asp (OtBu) -OH, Fmoc-Cys (Trt) -OH, Fmoc-Gln (Trt) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Gly-OH, Fmoc-His (Trt) -OH, Fmoc-Ile-OH, Fmoc-Leu-OH, Fmoc-Lys (Boc) -OH, Fmoc-Lys (Fmoc) -OH, Fmoc-Leu-OH, Fmoc-Met-OH, Fmoc-Phe-OH, Fmoc-D-Phe-OH, Fmoc-Pro-OH, Fmoc-D-Pro-OH, Fmoc-Ser (tBu) -OH, Fmoc-Thr (tBu) -OH, Fmoc-Trp (Boc) -OH, Fmoc-D-Trp (Boc) -OH, Fmoc-Tyr (tBu) -OH, Fmoc-Val-OH, Fmoc-Lys (Mtt) -OH, Fmoc-Lys (ivDde) -OH, Fmoc-Glu-OtBu, Fmoc-8-amino-3, 6-dioxaoctanoic acid (Fmoc-OEG-OH) , Fmoc-8-amino-octanoic acid (Fmoc-Aoc-OH) , Fmoc-PEG1-OH (Fmoc-HN-CH2CH2O-CH2CH2CO2H) , Fmoc-PEG3-OH (Fmoc-HN- [CH2CH2O] 3-CH2CH2CO2H) , Fmoc-PEG6-OH (Fmoc-HN- [CH2CH2O] 6-CH2CH2CO2H) etc. Other reagents used included DOTA-tris (tert-butyl ester) , DOTAGA-tetra (t-Bu ester) etc.1.2 Synthesis of the Exemplary Linker Group ESL1A mixture of Fmoc-Gly-OH (2.45 g, 8.25 mmol) and DIC (1.04 g, 8.25 mmol) in THF (15 mL) was stirred at room temperature (r.t. ) for 10 min before the addition of DMAP (67 mg, 0.55 mmol) and tert-Butyl 4-hydroxybutanoate (880 mg, 5.5 mmol) . The resulting mixture was stirred at r.t. overnight. The solvent was removed by rotatory evaporator, and the crude product was extracted with ethyl acetate (EA) (50 mL x 3) . The combined organic layers were washed by brine and dried over Na2SO4, concentrated and purified by the flash chromatography to afford the ester intermediate (1.6 g, 75%yield) as a white solid. The ester intermediate (1.6 g, 3.65 mmol) was dissolved in HCl / dioxane (2.5 M, 5 mL) and stirred at r. t. for 3 h. The resulting crude product was purified by preparative reverse phase HPLC to afford Fmoc protected ESL1 carboxylic acid (800 mg) as a white solid.1.3 Loading of C-terminal residuesThe C-terminal amide peptides were prepared using Rink Amide-MBHA resin. The first C-terminal residue (Fmoc-Lys (Mtt) -OH; Fmoc-D-Lys (Mtt) ; Fmoc-Ser (tBu) -OH) was covalently linked following a standard amide bond coupling conditions using PyBOP / HOBt / DIEA as coupling reagents. The resin was washed with DMF 6 times before the coupling of the 2nd residue.1.4 Standard Solid-Phase Assembly protocolThe synthesis was performed using Fmoc-based chemistry manually. The stepwise assembly was conducted following the below steps:1) Pre-swell the resin with DCM and DMF;2) Remove the Fmoc group by 20%piperidine; 2 treatments, 10 min each;3) Wash the resin with DMF to remove piperidine;4) Add Fmoc-amino acid (1 mmol) , PyBOP (1 mmol) , HOBt (0.2 mmol) and DMF (5 mL) to a reaction vessel containing 0.20 mmol resin followed by addition of DIEA (2 mmol) , the resulting mixture was mixed by bubbling nitrogen for 1 -2 h;5) Drain the resin, and wash the resin with DMF 6 times;6) When needed, the N-epsilon-lysine Mtt protective group can be removed by treating the resin with 30% (v / v) HFIP in DCM for 1 h twice; drain the resin and wash it with DCM and DMF;7) The final wash before resin cleavage was done with DMF (3 times) , DCM (3 times) and MeOH (3 times) , respectively.1.5 Resin cleavage and purificationAfter solid-phase peptide assembly was completed, the resin was subject to a 1.5 -3 h treatment of TFA / triisopropylsilane (TIS) / H2O (95: 2.5: 2.5, v / v / v) . The resin was filtered off and washed one time with TFA, the combined filtrate was treated with methyl tert-butyl ether (MTBE) to precipitate the crude peptide out of the solution. The precipitate was collected by centrifugation and washed 3 times with diethyl ether, briefly dried, then subjected to purification by using a reverse phase preparative HPLC system (Waters Delta Prep 4000) with a C18-reverse phase column. Mobile phases: A: 0.1%TFA / H2O; B: 0.1%TFA / ACN. Relevant fractions were analyzed by analytical ultra-performance liquid chromatography (UPLC) . The pure fractions were pooled and freeze-dried affording the product as a white lyophilized powder.1.6 LC-MS conditionInstrument: Agilent prime-6125B_2LCMSColumn: Boltimate EXT C18 CoreShell 4.6 x 50 mm, 2.7 μmDetection: UV (254 nm 214 nm 280 nm) and MS (ESI, 100 to 2000 amu)Mobile Phase: A: H2O (0.05%formic acid) ; B: ACN (0.05%formic acid)Flow Rate: 2.0 mL / minColumn Temperature: 45℃Gradient: 10 %to 95%B within 1.5 min, followed by 95%B for 1.0 min.1.7 Analytical HPLC conditionInstrument: WATERS ARC UPLCColumn: XBridge BEH peptide BEH C18, 3.5 μm, 2.1 mm x 150 mmDetection: UV 254 nm, 214 nm, 280 nmMobile Phase: A: H2O (0.1%TFA) ; B: ACN (0.1%TFA)Column Temperature: 40 ℃Flow Rate: 0.6 mL / minGradient:The following exemplary compounds of the application were prepared using the above methods.1.8 Synthesis and characterization of the exemplary compoundsTable 2 Synthesis and characterization of exemplary compounds1.9 Radiochemistry Methods1.9.1125I complex synthesisTo a 38 μL of comparator compound in solution (20 μM in 100 mM pH 7.5 sodium phosphate) , was added Na125I solution (2.0 mCi, Perkin Elmer) , then added 14 μL of a Chloramine-T solution (fresh 500 μM in 100 mM pH 7.5 sodium phosphate) . The resulting solution was mixed well then left at room temperature for 5 min before the addition of 2 μL of the sodium ascorbate solution (fresh 50 mM in H2O) . The resulting crude product was mixed at room temperature for 2 min before loaded to Oasis HLB cartridge (10 mg) for purification. The cartridge was first washed with 0.80 mL x 3 H2O, then the product was eluted by 0.40 mL x 3 -80%aqueous ethanol. The fractions were analyzed by radio-thin-layer chromatography (TLC) on a polyamide film using methanol and 1M ammonium acetate as the mobile phase (v / v: 4: 1) and detected by Mini Scan (Eckert &Ziegler Radiopharma Inc. ) . The selected fractions were pooled and diluted by 1%bovine serum albumin (BSA) and 5 mg / mL sodium ascorbate-containing pH 7.5 100 mM sodium phosphate buffer to a final activity of ~ 50-100 μCi / mL. The aliquoted products were stored at -80℃ until being used for the radioligand binding assay and expired at 4 weeks after synthesis.125I-C2 were prepared using the above protocol.1.9.2 177Lu complex synthesisTo a 0.5 M NaOAc buffer (20-50 μL, pH = 4.5) was added 4 μL of exemplary or comparator compound in DMSO stock solution (2000 μM) and 2 mCi 177Lu (ITM Isotope Technologies Munich) , the resulting mixture was heated to 95℃ for 15 min. The resulting product was analyzed by radio-TLC and radio-HPLC (column: Shim-pack GIST 5μm 4.6*150mm; buffer A: 0.2%formic acid H2O; buffer B: 0.1%formic acid acetonitrile; flow rate: 1 mL / min; gradient: 0-5 min: 10%B to 95%B; then 5-8 min: 95%B) . The labelled products were used immediately or diluted by a PBS buffer containing freshly added 3 mg / mL ascorbate.177Lu complexes of the application were prepared using protocols described above.Example 2. Binding affinities of the exemplary compounds of the applicationGLP-1R binding affinities were determined by using 125I labeled compound C-2 (125I-C2) of the present application. Briefly, 100 μL INS-1 cells expressing human GLP-1R at a density of 1 ~ 2 x 106 cells / mL were mixed with binding buffer (RPMI-1640 medium supplemented with 0.25%bovine serum albumin) in each well of the 96-well filter plate (Millipore) . Then the cells in each well were incubated with 125I-C2 (0.02 μCi / well) in the presence of increasing concentrations (0-10000 nM) of test compounds under 37℃ for 1 hr (3 repeats) . After incubation, unbound 125I-C2 in each well was removed by filtration using a Multiscreen vacuum manifold (Millipore) and the cells were further rinsed with the binding buffer for 5 times. The cells from each well were then collected and radioactivity of the cells in each well was individually measured by γ counter (2480 WIZARD2, PerkinElmer) . The best-fit IC50 values of test compounds were calculated by fitting the data with nonlinear regression using GraphPad Prism 8.0.1.Tables 3 illustrates the results from representative test compounds in the above described radioligand competitive binding assay. The data confirms that all compounds can effectively bind to GLP-1R with a IC50 in the range of 1-1000 nM.Table 3 IC50 of the representative compoundsGIPR binding affinity was determined in a functional assay where stimulation of GIPR can lead to increased cyclic adenosine monophosphate (cAMP) production. Briefly, 10 μl CHO cells stably expressing human GIPR was seeded in each well of a 384-well plate at a concentration of 2x105 per ml (supplemented with 0.1%BSA) , and then incubated at room temperature for 30 min. Then the cells in each well were mixed with 10 μl of the diluted test compound and incubated with TopSeal-Afilm covered at room temperature for 60 min. The plate was then subject to cAMP activation analysis.Table 4 illustrates mean EC50 of the test compounds in cAMP activation assay. The data confirms that the representative GIP analogs can effectively activate GIPR with a EC50 of single-digital nanomolar.Table 4 Mean EC50 of the test compounds in FLIPR AssaysThe binding affinity of B7-H3 targeting compounds was determined by a flow cytometry based competitive binding assay using CT26 cells that overexpress human B7-H3 (Cobioer Biosciences, Cat#: CBPG0018) and a biotinylated B7H3 ligand (compound #FL081-254) . The assay started with harvesting and centrifuging the CT26 cells at 400 g for 4 min, then re-suspended them in a FACS buffer (PBS containing 10%protein free blocking buffer, ThermoFisher, Cat#: 37572) at a density of 2X106 cells / ml. The assay was set up by mixing 50 μL of cell suspension, 50 μL of biotinylated ligand solution (final concentration of 81 nM in the FACS buffer) and 50 μL of series diluted test compound solution (in the FACS buffer) in a 96-well plate. A Her2 targeting compound was included as a negative control. The resulting plate was incubated at 4℃ for 2 h, then washed twice with the FACS buffer, followed by the addition of Alexa 647-conjugated streptavidin (final concentration of 1.8 μg / ml, Jackson, Cat #: 016-600-084) and further incubation at 4℃ for 1 h. The final plate was washed twice with the FACS buffer, and the resulting samples were measured for fluorescence intensity via a flow cytometer (NovoCyte Flow Cytom) and the IC50 values were calculated by using GraphPad Prism 10. The data is summarized in Table 5The IC50 data suggested that the B7-H3 targeting compounds can specifically bind to the CT26 cells over-expressing huma B7H3 with IC50 values of 50-300 nM.Table5 Binding affinities of the exemplary B7H3 targeting compoundsExample 3 Biodistribution study of the exemplary complexes of the applicationThe BALB / c nude mice and SCID CB-17 mice (Charles River, Beijing) were utilized to establish the xenografted model of INS-1 (Cobioer Bioscience, Nanjing) and CHO-K1-GIP-Gα15 (Genscript, Nanjing, China) , respectively, for biodistribution studies. All animal care and experimental procedure were performed by following the animal protocols approved by the ethics committee of China Institute of Radiation Protection.3.1 Biodistribution studies of the complexes of the application targeting GLP-1RBriefly, each mouse was inoculated with approximately 4 × 106 GLP-1R expressing INS-1 cells mixed with Matrigel, by subcutaneous injection at rear flank. After inoculation, the xenografted tumors were allowed to grow for~2-4 weeks till the tumor weight reached to about 0.20 g.Biodistribution studies were performed by administrating 177Lu labeled complexes of representative compounds of the application at a dose of~30 -50 μCi (in 100 μL 0.9%NaCl, ~1.11 -1.85 MBq, with specific activity 50-250 μCi / nmol) to the animals in each group through tail vein injection.At different time points after the administration, the mice treated in each group were euthanized. The tissues and organs of the animals were collected, excised, weighed, and analyzed in a PerkinElmer 2480 WIZARD2 γ counter, and the percent injected dose (%ID) and %ID / g of each organ or tissue were calculated.Tables 6-14 below illustrate the biodistribution of the tested complexes in INS-1 tumor bearing mice at 1, 4, 24, and at 72 hours, including 177Lu-C-3, 177Lu-I-14b, 177Lu-I-1b, 177Lu-I-2b, 177Lu-I-3b, 177Lu-I-7b, 177Lu-I-8b, 177Lu-I-10b, and 177Lu-I-11b.Figures 1A-1E further show the biodistribution of representative 177Lu-labeled complexes 177Lu-C-3, 177Lu-I-2b, 177Lu-I-3b, 177Lu-I-7b, and 177Lu-I-10b in INS-1 tumor bearing mice at different time points after administration.Table 6 Biodistribution of177Lu-C-3 (ID% / g, Mean ± SD, n = 3)Table 7 Biodistribution of177Lu-I-14b (ID% / g, Mean ± SD, n = 3)Table 8 Biodistribution of177Lu-I-1b (ID% / g, Mean ± SD, n = 3)Table 9 Biodistribution of177Lu-I-2b (ID% / g, Mean ± SD, n = 3)Table 10 Biodistribution of177Lu-I-3b (ID% / g, Mean ± SD, n = 3)Table 11 Biodistribution of177Lu-I-7b (ID% / g, Mean ± SD, n = 3)Table 12 Biodistribution of177Lu-I-8b (ID% / g, Mean ± SD, n = 3)Table 13 Biodistribution of177Lu-I-10b (ID% / g, Mean ± SD, n = 3)Table 14 Biodistribution of177Lu-I-11b (ID% / g, Mean ± SD, n = 3)Tables 15-16 show the tumor to normal organ ratio of biodistribution of representative complexes at 24 h or 72 h after administration. It was found that the complexes had significantly improved tumor uptake and the ratio of tumor uptake to kidney uptake when compared to comparator 177Lu-C-3. In addition, the complexes with cleavable linker demonstrated superior tumor uptake to normal organ uptake ratios, including tumor to blood and tumor to muscle, over the complex with non-cleavable linker 177Lu-I-14b. Such unexpected improvements on the biodistribution offer these constructs significantly more favorable profiles concerning therapeutic efficacy and therapeutic safety window.Table 15 Relative ratio of biodistribution of representative complexes 24 hours after administrationTable 16 Relative ratio of biodistribution of representative complexes 72 hours after administration3.2 Biodistribution studies of the complexes of the application comprising a GIP-R target binding groupBriefly, each mouse was inoculated with approximately 4 × 106 GIPR expressing CHO-K1-GIP-Gα15 cells mixed with Matrigel, by subcutaneous injection at rear flank. After inoculation, the xenografted tumors were allowed to grow for~2-4 weeks till the tumor weight reached to about 0.20 g.Biodistribution studies were performed by administrating 177Lu labeled complexes of representative compounds of the application at a dose of~30 -50 μCi (in 100 μL 0.9%NaCl, ~1.11 -1.85 MBq, with specific activity 50-250 μCi / nmol) to the animals in each group through tail vein injection.At different time points after the administration, the mice treated in each group were euthanized. The tissues and organs of the animals were collected, excised, weighed, and analyzed in a PerkinElmer 2480 WIZARD2 γ counter, and the percent injected dose (%ID) and %ID / g of each organ or tissue were calculated.Tables 17-23 below illustrate the biodistribution of the tested complexes in CHO-K1-GIP-Gα15 tumor bearing mice at 1, 4, 24, and at 72 h, including 177Lu-C-1, 177Lu-I-1a, 177Lu-I-2a, 177Lu-I-5a, 177Lu-I-13a, 177Lu-I-14a, and177Lu-I-15a.Figures 2A-2C further show the biodistribution of representative 177Lu-labeled complexes 177Lu-C-1, 177Lu-I-5a, and177Lu-I-15a in CHO-K1-GIP-Gα15 tumor bearing mice at different time points after administration.Table 17 Biodistribution of177Lu-C-1 (ID% / g, Mean ± SD, n = 3)Table 18 Biodistribution of177Lu-I-1a (ID% / g, Mean ± SD, n = 3)Table 19 Biodistribution of177Lu-I-2a (ID% / g, Mean ± SD, n = 3)Table 20 Biodistribution of177Lu-I-5a (ID% / g, Mean ± SD, n = 3)Table 21 Biodistribution of177Lu-I-13a (ID% / g, Mean ± SD, n = 3)Table 22 Biodistribution of177Lu-I-14a (ID% / g, Mean ± SD, n = 3)Table 23 Biodistribution of177Lu-I-15a (ID% / g, Mean ± SD, n = 3)Table 24 Biodistribution of177Lu-I-6a (ID% / g, Mean ± SD, n = 3)Table 25 Biodistribution of177Lu-I-16a (ID% / g, Mean ± SD, n = 3)Tables 26-27 show the tumor to normal organ ratio of the biodistribution of representative complexes at 24 or 72 h after administration. It was found that the complexes including 177Lu-I-1a, 177Lu-I-2a, 177Lu-I-5a, 177LuI-13a, 177Lu-I-14a and 177Lu-I-15ahad significantly improved tumor uptake and the ratio of tumor uptake to kidney uptake when compared to comparator 177Lu-C-1 which provide them significantly more favorable profiles concerning therapeutic efficacy and therapeutic safety window.Table 26 Tumor to normal organ ratio of biodistribution of representative complexes 24 hours after administrationTable 27 Tumor to normal organ ratio of biodistribution of representative complexes 72 hours after administration3.3 Biodistribution studies of the complexes of the application comprising B7-H3 target binding groupBriefly, each mouse was inoculated with approximately 4 × 106 B7-H3 expressing CT26 cells mixed with Matrigel, by subcutaneous injection at rear flank. After inoculation, the xenografted tumors were allowed to grow for~2-4 weeks till the tumor weight reached to around 100-250 mm3.Biodistribution studies were performed by administrating 177Lu labeled complexes of representative compounds of the application at a dose of~30 -100 μCi per mouse (in 100 μL 0.9%NaCl, ~1.1 -3.7 MBq, with specific activity 50-500 μCi / nmol) through tail vein injection.At different time points after the administration, the mice treated in each group were euthanized. The tissues and organs of the animals were collected, excised, weighed, and analyzed in a PerkinElmer 2480 WIZARD2 γ counter, and the percent injected dose (%ID) and %ID / g of each organ or tissue were calculated.Tables 28-32 below illustrate the biodistribution of the tested complexes in CT-26 tumor bearing mice at 4, 24, and at 72 hours, including 177Lu-C-5, 177Lu-I-1c, 177Lu-I-2c, 177Lu-I-3c, and 177Lu-I-4c.Table 28 Biodistribution of177Lu-C-5 (ID% / g, Mean ± SD, n = 3)Table 29 Biodistribution of177Lu-I-1c (ID% / g, Mean ± SD, n = 3)Table 30 Biodistribution of177Lu-I-2c (ID% / g, Mean ± SD, n = 3)Table 31 Biodistribution of177Lu-I-3c (ID% / g, Mean ± SD, n = 3)Table 32 Biodistribution of177Lu-I-4c (ID% / g, Mean ± SD, n = 3)Figures 3A-3E further show the biodistribution of representative 177Lu-labeled complexes 177Lu-C-5, 177Lu-I-1c, 177Lu-I-2c, 177Lu-I-3c, and 177Lu-I-4c in CT-26 tumor bearing mice at different time points after administration.Tables 33-34 summarize the tumor uptake and the ratio of tumor uptake to normal organ uptake of the representative complexes. It was found that, as compared to the comparator complex 177Lu-C-5, the complexes of the present application including 177Lu-I-1c, 177Lu-I-2c, 177Lu-I-3c, and 177Lu-I-4c all displayed significantly higher tumor uptake, lower kidney uptake, and improved T / K at 24h.In addition, the conjugates with cleavable linkers as described herein also demonstrated superior tumor uptake to normal organ uptake ratios, including tumor to blood and tumor to muscle, over the ones with non-cleavable linkers, for example, the complexes with cleavable linkers 177Lu-I-2c, 177Lu-I-3c vs the complex without the cleavable linker 177Lu-I-1c.Table 33 The ratio of tumor uptake verse key normal organ uptake of the representative B7-H3 targeting complexes 24 hours after administrationTable 34 The ratio of tumor uptake verse key normal organ uptake of the representative B7-H3 targeting complexes 72 hours after administrationTABLE 26. List of sequencesFULL CITATIONS FOR DOCUMENTS REFERRED TO IN THE SPECIFICATIONA number of publications are cited herein. Full citations for these references are provided below. Each of these references is incorporated herein by reference in its entirety into the present disclosure, to the same extent as if each individual reference was specifically and individually indicated to be incorporated by reference.Sgouros G, Bodei Lisa, McDevitt MR, et al. “Radiopharmaceutical therapy in cancer: clinical advances and challenges” . Nat Rev Drug Discov. 2020 Sep; 19 (9) : 589-608.M, Christ E, Wild D, et al. “Glucagon-like peptide-1 receptor overexpression in cancer and its impact on clinical applications” . Front Endocrinol (Lausanne) . 2012 Dec 6; 3: 158. doi: 10.3389 / fendo. 2012.00158.Regazzo, D., Barbot, M., Scaroni, C. et al. The pathogenic role of the GIP / GIPR axis in human endocrine tumors: emerging clinical mechanisms beyond diabetes. Rev Endocr Metab Disord 21, 165-183 (2020) .S, García Garayoa E, Maes V, et al. “PEGylation of (99m) Tc-labeled bombesin analogues improves their pharmacokinetic properties” . Nucl Med Biol. 2011 Oct; 38 (7) : 997-1009.Wang Z, Tian R, Niu G, et al., “Single low-dose injection of Evans blue modified PSMA-617 radioligand therapy eliminates prostate-specific membrane antigen positive tumors” . Bioconjug Chem. 2018 Sep 19; 29 (9) : 3213-21Choy CJ et al., 2017;Kuo HT, Merkens H, Zhang Z, et al. “Enhancing treatment efficacy of 177Lu-PSMA-617 with the conjugation of an albumin-binding motif: preclinical dosimetry and endoradiotherapy studies” . Mol Pharm. 2018 Nov 5; 15 (11) : 5183-91.Deberle LM, M, Umbricht CA, et al. “Development of a new class of PSMA radioligands comprising ibuprofen as an albumin-binding entity” . Theranostics. 2020 Jan 1; 10 (4) : 1678-93.Kramer V, Fernández R, Lehnert W, et al. “Biodistribution and dosimetry of a single dose of albumin-binding ligand [177 Lu] Lu-PSMA-ALB-56 in patients with mCRPC” . Eur J Nucl Med Mol Imaging. 2021 Mar; 48 (3) : 893-903.Arano Y, Wakisaka K, Ohmono Y, et al. “Assessment of radiochemical design of antibodies using an ester bond as the metabolizable linkage: evaluation of maleimidoethyl 3- (tri-n-butylstannyl) hippurate as a radioiodination reagent of antibodies for diagnostic and therapeutic applications” .Bioconjug Chem. 1996 Nov-Dec; 7 (6) :628-37.
Claims
1.A compound comprising a structure of Formula I, wherein:Z is a target binding group, wherein the target binding group is a peptide;F and F' are independently selected from A or E;each A is independentlyeach E is independentlyeach LAis independentlyeach LE is independentlyeach of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is independently selected from the group consisting of a direct bond, a non-cleavable linker and a cleavable linker;each of TA, TE and T is independently a branching group that is at least trivalent;each of A1 and A2 is independently a potency enhancing group;each of E1 and E2 is independently an effector group;a is any integer selected from 0-10, and preferably 0 or 1;b is any integer selected from 0-10, and preferably 0, 1 or 2;c is any integer selected from 0-10, and preferably 0, 1 or 2;d is any integer selected from 0-10, and preferably 0 or 1; ande is any integer selected from 0-10, and preferably 0 or 1;provided that:(i) when b and c are both 0, then a is at least 1, and one of F and F' is A and the other of F and F' is E;(ii) when b is 0, then a is at least 1, and one or both of F and F' is A, or(iii) when c is 0, then a is at least 1, and one or both of F and F' is E.2.The compound of claim 1, wherein a is 0, and the compound of Formula I is a compound of Formula I-i, wherein:each of Z, A and E is as defined in claim 1,b is any integer selected from 1-10, and preferably 1 or 2, andc is any integer selected from 1-10, and preferably 1 or 2.3.The compound of claim 1 or 2, wherein a is 0, b and c are both 1 and d and e are both 0, and the compound of Formula I (i) is a compound of Formula I (i-a) , wherein Z, A1, LA1, E1 and LE1 are as defined in claim 1.4.The compound of claim 1, wherein a is 1, b, c, d and e are all 0, F is A, F’ is E, A is E is LA is LA1 and LE is LE1 and the compound of Formula I is a compound of Formula I (ii) , wherein Z, T, A1, E1, LA1, LE1 and LZ are as defined in claim 1.5.The compound of claim 1, wherein a is 1, b and c are both 0, F is A, F’ is E, A is E is and the compound of Formula I is a compound of Formula I (iii) , whereinZ, TA, TE, T, LA1, LA2, LA3, LE1, LE2, LE3, LZ, A1, A2, E1 and E2 are as defined in claim 1; andd and e are independently selected from 0 and 1.6.The compound of claim 5, wherein d is 1 and e is 0 and the compound of Formula I(iii) is a compound of Formula I (iii-a) wherein Z, A1, A2, E1, LA1, LA2, LA3, LE1, LZ, TA, and T are as defined in claim 1.7.The compound of claim 1, wherein a is 1, b is 0, c is 1, d is 0 or 1, e is 0, F and F’ are both A, and A is and the compound of Formula I is a compound of Formula I (iv) , wherein Z, T, E1, LE and LZ are as defined in claim 10; andeach A1 and each LA are as defined in claim 1 and each A1 and each LA are the same or different.8.The compound of any one of claims 1-7, wherein each of A, E and LZ is independently covalently linked to an amino acid residue of Z selected from the group consisting of Lys, ornithine (Orn) , homo-lysine, 2, 3-diaminopropionic acid (Dap) , 2, 4-diaminobutyric acid (Dab) , cysteine, homo-cysteine, glutamine, glutamic acid, asparagine, aspartic acid, 3, 5-bis (aminomethyl) benzoic acid (Bab) , 4-aminomethylphenylalaline (Amp) , 4R-4-aminoproline (Apr) , 4- (2-aminoethoxy) phenylalanine, 4-aminopiperidine-4-carboxylic acid (Apc) , 2- ( (1, 3-diaminopropan-2-yl) oxy) acetic acid (Dpa) , and a D enantiomer thereof.9.The compound of any one of claims 1-8, wherein each of TA, TE and T independently comprises one or more amino acid residues each independently derived from Lys, ornithine (Orn) , homo-lysine, 2, 3-diaminopropionic acid (Dap) , 2, 4-diaminobutyric acid (Dab) , cysteine, homo-cysteine, glutamine, glutamic acid, asparagine, aspartic acid, 3, 5-bis (aminomethyl) benzoic acid (Bab) , 4-aminomethylphenylalaline (Amp) , 4R-4-aminoproline (Apr) , 4- (2-aminoethoxy) phenylalanine, 4-aminopiperidine-4-carboxylic acid (Apc) , 2- ( (1, 3-diaminopropan-2-yl) oxy) acetic acid (Dpa) , or a D enantiomer thereof.10.The compound of any one of claims 1-9, wherein the potency enhanced by A includes but is not limited to improved binding affinity against the tumor antigen that Z specifically binds to, extended in vivo half-life, increased tumor uptake, and / or enhanced in vivo activity.11.The compound of any one of claims 1-10, wherein each of A1 and A2 independently comprises one or more plasma protein binding groups.12.The compound of claim 11, wherein the plasma protein is selected from albumin, alpha-1-acid glycoprotein, fetuin, transferrin, IgG, HDL (high-density lipoprotein) or LDL (low-density lipoprotein) .13.The compound of any one of claims 1-12, wherein each of A1 and A2 independently comprises one or more albumin binding groups.14.The compound of claim 13, wherein the albumin binding group is selected from the group consisting of unsubstituted or substituted C (O) C1-26alkyleneCOOH, unsubstituted or substituted C (O) C1-26alkenyleneCOOH, unsubstituted or substituted C (O) C1-26alkyl, and unsubstituted or substituted C (O) C1-26alkenyl.15.The compound of claim 14, wherein the albumin binding group is selected from unsubstituted or substituted C (O) C6-20alkyleneCOOH, or unsubstituted or substituted C (O) C7-21alkyl.16.The compound of claim 15, wherein the albumin binding group is selected from the group consisting of C (O) C7alkyl, C (O) C8alkyl, C (O) C9alkyl, C (O) C10alkyl, C (O) C11alkyl, C (O) C12alkyl, C (O) C13alkyl, C (O) C14alkyl, C (O) C15alkyl, C (O) C16alkyl, C (O) C17alkyl, C (O) C18alkyl, C (O) C19alkyl, C (O) C20alkyl, C (O) C21alkyl, C (O) C6alkyleneCOOH, C (O) C7alkyleneCOOH, C (O) C8alkyleneCOOH, C (O) C9alkyleneCOOH, C (O) C10alkyleneCOOH, C (O) C11alkyleneCOOH, C (O) C12alkyleneCOOH, C (O) C13alkyleneCOOH, C (O) C14alkyleneCOOH, C (O) C15alkyleneCOOH, C (O) C16alkyleneCOOH, C (O) C17alkyleneCOOH, C (O) C18alkyleneCOOH, C (O) C19alkyleneCOOH, and C (O) C20alkyleneCOOH.17.The compound of any one of claims 1-16, wherein each of E1and E2 is independently selected from a chemotherapeutic agent, a toxin, an immunomodulator, a diagnostic agent, a radionuclide, or a chelating group.18.The compound of claim 17, each of E1 and E2 independently comprises a radionuclide selected from the group consisting of 11C, 13N, 14C, 15O, 18F, 75Br, 76Br, 77Br, 123I, 124I, 125I, 131I, 35S, 211At, 32P, 33P, 71As, 72As, 74As, 76As, and 77As.19.The compound of claim 17, wherein each of E1 and E2 independently comprises a chelating group derived from a chelating agent.20.The compound of claim 19, the chelating agent is selected from the group consisting of 1, 4, 7-Triazacyclononane (TACN) , 1, 4, 7-triazacyclononane-triacetic acid (NOTA) , 1, 4, 7-triazacyclononane-N-succinic acid-N', N"-diacetic acid (NOTASA) , 1, 4, 7-triazacyclononane-N-glutamic acid-N', N"-diacetic acid (NODAGA) , 1, 4, 7- triazacyclononane-N, N', N"-tris (methylenephosphonic) acid (NOTP) , 1, 4, 7, 10-tetraazacyclododecane ( [12] aneN4) (cyclen) , 1, 4, 7, 10-tetraazacyclotridecane ( [13] aneN4) , 1, 4, 7, 11-tetraazacyclotetradecane (iso-cyclam) , 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid (DOTA) , 2- (1, 4, 7, 10-tetraazacyclododecan-1-yl) acetate (DO1A) , 2, 2'- (1, 4, 7, 10-tetraazacyclododecane-1, 7-diyl) diacetic acid (DO2A) , 2, 2', 2"- (1 , 4, 7, 10-tetraazacyclododecane-1 , 4, 7-triyl) triacetic acid (DO3A) , 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetra (methanepnosphonic acid) (DOTP) , 1, 4, 7, 10-tetraazacyclododecane-1, 7-di (methanephosphoriic acid) (DO2P) , 1 , 4, 7, 10-tetraazacyclododecane-1, 4, 7-tri (methanephosphonic acid) (DO3P) , 1, 4, 7, 10-tetraazacyclo-decane-1 -glutamic acid-4, 7, 10-triacetic acid (DOTAGA) , 1, 4, 7, 10-tetraazacyclodecane-1 -succinic acid-4, 7, 10-triacetic acid (DOTASA) , 1, 4, 8, 11-tetraazacyclotetradecane ( [14] aneN4) (cyclam) , 1, 4, 8, 12-tetraazacyclopentadecane ( [15] aneN4) , 1, 5, 9, 13-tetraazacyclohexadecane ( [16] aneN4) , 1, 4-ethano-1, 4, 8, 11-tetraazacyclo-tetradecane (et-cyclam) , 1, 4, 8, 11-tetraazacyclotetradecane-1, 4, 8, 1 1-tetraacetic acid (TETA) , 2- (1, 4, 8, 11 -tetraazacyclotetradecane-1-y I) acetic acid (TE1A) , 2, 2'- (1, 4, 8, 11-tetraazacyclotetradecane-1, 8-diyl) diacetic acid (TE2A) , 4, 11-bis (carboxy methyl) -1, 4, 8, 11-tetraazabicyclo [6.6.2] -hexadecane (CB-TE2A) , 3, 6, 10, 13, 16, 19-hexaazabicyclo [6.6.6] icosane (Sar) , 1, 4, 7, 10-tetra- (2-carbamoyl-methyl) -cyclododecane (TCMC) , N, N′-bis [ (6-carboxy-2-pyridil) methyl] -4, 13-diaza-18-crown-6 (macropa) , phthalocyanines, porphyrins, PCTA (3, 6, 9, 15-tetraazabicyclo [9.3.1] pentadeca-1 (15) , 11, 13-triene-3, 6, 9-triacetic acid) , DEPA (7- [2- (biscarboxymethylamino) ethyl] -4, 10-biscarboxymethyl-1, 4, 7, 10-tetraazacyclododec-1-yl-acetic acid) , DTPA (1, 1, 4, 7, 7-diethylenetriaminepentaacetic acid) , CHX-DTPA (cyclohexane-1, 2-diamineN, N, N′, N′-tetraacetate) , BATPA (1, 2-bis [2-aminophenoxy] ethane-N, N, N′, N′-tetraacetic acid) , TTHA (triethylenetetramineN, N, N′, N″, N″′, N″′-hexaacetic acid) , HBED (N, N′-bis [2-hydroxybenzyl] ethylenediamine-N, N′-diacetic acid) , EGTA (ethylene glycol bis [2-aminoethyl ether] -N, N, N′, N′-tetraacetic acid) , EDTMP (ethylenediamine tetra- [methylene phosphonic acid] ) , TRAP (triazacyclononate phosphinic acids) , SHBED (N, N′-bis [2-hydroxy-5-sulfobenzyl] ethylenediaminediacetic acid) , H6Sbbpen (N, N′-bis- [2-hydroxy-5-sulfonylbenzyl] -N, N′-bis [2-methylpyridyl] ethylenediamine) , THP (Tris (3, 4-hydroxypyridinone) , DFO (deferoxamine) , FSC (Fusarinine) , TAFC (triacetylfusarinine C) , FOXE (ferrioxamine E) , 6SS (N, N′-bis [2, 2-dimethyl-2-mercaptoethyl] ethylenediamine-N, N′-diacetic acid) , ECC (ethylenecysteamine cysteine) , ECD (ethyl cysteinate dimer) , NETA ( [2- {4, 7-biscarboxymethyl (1, 4, 7) triazacyclonona-1-yl-ethyl} carbonylmethylamino] acetic acid, THPN (Tetrakis (3-Hydroxy-4-Pyridinone) ) , H2dedpa (1, 2- [ {6- (carboxylato-) pyridin-2-yl} methylamino] -ethane) , H4octapa (N, N′-bis [6-carboxy-2-pyridylmethyl] -ethylenediamine-N, N′-diacetic acid) , H2bispa2 (6, 6′- [ {9-hydroxy-1, 5-bis- (methoxycarbonyl) -2, 4-di (pyridin-2-yl) -3, 7-diazabicyclo [3.3.1] nonane-3, 7-diyl} bis (methylene) ] dipicolinic acid) , DOTMP (1, 4, 7, 10-Tetraazacyclododecane-1, 4, 7, 10-tetrayl-tetrakis (methylphosphonic acid) ) , PEPA (1, 4, 7, 10, 13-pentaazocyclopentadecane pentaacetic acid) , HEHA (1, 4, 7, 10, 13, 16-hexaazocyclooctadecane hexaacetic acid) , H2hox, H2CHXhox, H2octox, H2pyhox, H4neunopa, TETPA, H4pypa, H4py4pa, DTPAm, EGTAm, ampam, Me-3, 2-HOPO, 3, 4, 3- (LI-1, 2-HOPO) , and macrocyclic tetrapthalimide.21.The compound of claim 20, wherein the chelating group is derived from DOTA or DOTAGA.22.The compound of any one of claims 1-21, wherein each of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is independently selected from a direct bond, a non-cleavable linker, or a cleavable linker.23.The compound of claim 22, wherein the non-cleavable linker comprises one or more groups selected from the group consisting of R1NC1-20alkyleneNR2, R1NC1-20alkenyleneNR2, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R1NC1-20alkyleneC (O) , R1NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNHR2, C (O) C1-20alkenyleneNR2, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , C (O) C1-20alkenyleneC (S) , C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, R1NC1-20alkenyleneC (S) , C (S) C1-20alkyleneNR2 or C (S) C1-20alkenyleneNR2, each of which is independently and optionally interrupted by one or more of S, O, NH, N (C1-6alkyl) , C (O) , C (O) NH, NHC (O) , C (S) NH, NHC (S) , NHC (O) NH, NHC (S) NH, NHC (NH) , NHC (NC1-4alkyl) , C (NH) NH, C (NC1-4alkyl) NH, NC4-10cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, and each alkyl, alkylene and alkenylene is optionally substituted with one or more substituents selected from halo, COOH, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR3R4, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR3R4, wherein each R1, R2, R3 and R4 is independently selected from H and C1-4alkyl.24.The compound of claim 23, wherein the non-cleavable linker comprises one or more amino acid residues.25.The compound of claim 24, wherein the amino acid residue is derived from a naturally occurring amino acid or a non-naturally occurring amino acid.26.The compound of any one of claims 22-25, wherein the non-cleavable linker comprises one of more moieties of - (OCH2CH2) n-, wherein n is an integer of 1-28.27.The compound of claim 26, wherein the non-cleavable linker further comprises one or more groups selected from the group consisting of - (C2alkyleneO) 2C1alkyleneC (O) (OEG) , - (C2alkyleneO) C2alkyleneC (O) (PEG1) , - (C2alkyleneO) 3C2alkyleneC (O) (PEG3) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG6) , - (C2alkyleneO) 6C2alkyleneC (O) (PEG8) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG12) .28.The compound of any one of claims 1-25, wherein at least one of LA1, LA2, LA3, LE1, LE2, LE3 and LZ is a cleavable linker.29.The compound of claim 28, wherein the cleavable linker comprises one or more cleavable moieties selected from the group consisting of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) , C (O) S, C=NNH, C=NO, NC1-4alkylC (O) O, NHOC (O) NH, NC1-4alkylOC (O) , and an enzymatically cleavable peptide sequence.30.The compound of claim 28 or 29, wherein the cleavable linker comprises one or more groups selected from the group consisting of R5NC1-20alkyleneNR6, R5NC1-20alkenyleneNR5, C (O) C1-20alkyleneC (O) , C (O) C1-20alkenyleneC (O) , R5NC1-20alkyleneC (O) , R5NC1-20alkenyleneC (O) , C (O) C1-20alkyleneNR6, C (O) C1-20alkenyleneNR6, C (S) C1-20alkyleneC (S) , C (S) C1-20alkenyleneC (S) , C (S) C1-20alkyleneC (O) , C (S) C1-20alkenyleneC (O) , C (O) C1-20alkyleneC (S) , C (O) C1-20alkenyleneC (S) , SC1-20alkyleneS, SC1-20alkenyleneS, SC1-20alkyleneNR6, SC1-20alkenyleneNR6, R5NC1-20alkyleneS, R5NC1-20alkenyleneS, R5NC1-20alkyleneO, R5NC1-20alkenyleneO, OC1-20alkyleneNR6, OC1-20alkenyleneNR6, SC1-20alkyleneO, SC1-20alkenyleneO, OC1-20alkyleneS, and OC1-20alkenyleneS, C (O) C1-20alkyleneO, C (O) C1-20alkenyleneO, OC1-20alkyleneC (O) , OC1-20alkenyleneC (O) , C (O) C1-20alkyleneS, C (O) C1-20alkenyleneS, SC1-20alkyleneC (O) , SC1-20alkenyleneC (O) , R5NC1-20alkyleneC (S) , R5NC1-20alkenyleneC (S) , C (S) C1-20alkyleneNR6, C (S) C1-20alkenyleneNR6, C (S) C1-20alkyleneO, C (S) C1-20alkenyleneO, OC1-20alkyleneC (S) , OC1-20alkenyleneC (S) , SC1-20alkyleneC (S) , SC1-20alkenyleneC (S) , OC1-20alkyleneO, OC1-20alkenyleneCO, SC1-20alkyleneS, or SC1-20alkenyleneS, each of which is independently and optionally interrupted by one or more of S-S, C (O) O, OC (O) , OC (O) O, OC (O) NH, NHC (O) O, SC (O) , C (O) S, NC1-4alkylC (O) O, NHOC (O) NH, NC1-4alkylOC (O) , C=NNH, C=NNH2, C=NOH, C=NO, NH-NH, NH- NC1-4alkyl, NC1-4alkyl-NH, NC1-4alkylNC1-4alkyl, S, O, NH, N (C1-6alkyl) , C (O) , C (O) NH, NHC (O) , NHC (O) NH, NHC (S) NH, C (S) NH, NHC (S) , NHC (NH) , NHC (NC1-4alkyl) , C (NH) NH, C (NC1-4alkyl) NH, NC4-18cycloalkyl, C4-10heterocycloalkyl, C6-10aryl and C5-10heteroaryl, andwherein each alkyl, alkylene or alkenylene is optionally substituted with one or more substituents selected from halo, COOH, C1-6alkyl, OH, OC1-6alkyl, SH, SC1-6alkyl, NR7R7, C1-4alkyleneOH, C1-4alkyleneOC1-4alkyl and C1-4alkyleneNR7R8, andeach of R5, R6, R7 and R8 is independently selected from H and C1-4alkyl.31.The compound of any one of claims 28-30, wherein the cleavable linker comprises or is a structure of Formula (I-CL3) : -Y1-W1-Y2-W2-Y3-W3-Y4-W4-Y5-W5-Y6-, (I-CL3)wherein each of W1, W2, W3, W4, or W5 is independently a bond, or unbranched or branched C1-6alkylene;wherein each of Y1, Y2, Y3, Y4, Y5, Y6 is independently a bond, O, S, S-S, C (O) O, OC (O) , OC (O) O, OC (O) NRY, NRYC (O) O, NRY, C (O) , C (O) NRY, NRYC (O) , NRYC (O) NRY, C5-7cycloalkyl, C4-6heterocycloalkyl, or CH (RAA) ,wherein each RY is independently H, C1-6alkyl, C1-6alkyl substituted with one or more independently selected halogen, C1-6alkyleneOH, C1-6alkyleneNR7R8, C1-5alkyleneCOOH, or C1-4alkyleneOC1-4alkyl; andwherein RAA is a side chain of a naturally occurring amino acid;provided that at least one of Y1, Y2, Y3, Y4, Y5, Y6 is not a bond.32.The compound of claim 31, wherein at least one of Y1, Y2, Y3, Y4, Y5, Y6 is C (O) O, OC (O) , OC (O) O, OC (O) NRY, or NRYC (O) O.33.The compound of any one of claims 28-32, wherein the cleavable linker comprises one or more groups comprising a structure of Formula (I-CL1) : wherein W is selected from C (R10a) 2, N (R10a) or O,each R10a is independently H, C1-6alkyl, C1-6alkyl substituted with one or more independently selected halogen, C1-6alkyleneOH, C1-6alkyleneNR7R8, C1-5alkyleneCOOH, C1-4alkyleneOC1-4alkyl, or the side chain of a naturally occurring amino acid, or two R10a groups, together with the carbon atom to which they are attached, form a C3-10cycloalkyl or C3-10heterocycloalkyl;each R10b is independently H, C1-6alkyl, C1-6alkyl substituted with one or more independently selected halogen, C1-6alkyleneOH, C1-6alkyleneNR7R8, C1-5alkyleneCOOH, C1-4alkyleneOC1-4alkyl, or two R10b groups, together with the carbon atom to which they are attached, form a C3-10cycloalkyl or C3-10heterocycloalkyl; andR7 and R8 are each independently H, or C1-4alkyl.34.The compound of claim 33, wherein the cleavable linker comprises one or more groups selected from the group consisting of 35.The compound of claim 31, wherein at least one of Y1, Y2, Y3, Y4, Y5, Y6 is -S-S-.36.The compound of claims 35, wherein the cleavable linker comprises one or more groups having a structure of Formula (I-CL2) : andwherein each R11 is independently selected from H or C1-4alkyl.37.The compound of claim 35, wherein the cleavable linker comprises one or more groups selected from the group consisting of 38.The compound of claim 29, wherein the enzymatically cleavable peptide sequence is selected from the group consisting of Met-Val-Lys, Ala-Val, Ala-Pro, Gly-Pro, Ser-Ser, Ser-Gly, Gly-Ala and Ser-Lys.39.The compound of any one of claims 29-31, wherein the cleavable linker comprises one or more amino acid residues.40.The compound of claim 39, wherein the amino acid residue is derived from a naturally occurring amino acid or a non-naturally occurring amino acid.41.The compound of any one of claims 29-40, wherein the cleavable linker further comprises one of more moieties of - (OCH2CH2) n-, wherein n is an integer of 1-28.42.The compound of claim 41, wherein the cleavable linker further comprises one or more groups selected from the group consisting of - (C2alkyleneO) 2C1alkyleneC (O) (OEG) , - (C2alkyleneO) C2alkyleneC (O) (PEG1) , - (C2alkyleneO) 3C2alkyleneC (O) (PEG3) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG6) , - (C2alkyleneO) 6C2alkyleneC (O) (PEG8) , and - (C2alkyleneO) 6C2alkyleneC (O) (PEG12) .43.The compound of claim 28, wherein the compound of Formula I is a compound of Formula I (i) , and at least one of LA1, LA2, LA3, LE1, LE2 and LE3 isa cleavable linker.44.The compound of claim 28, wherein the compound of Formula I (i) is a compound of Formula I (i-a) , and at least one of LA1 and LE1 is cleavable linker.45.The compound of claim 28, wherein the compound of Formula I is a compound of Formula I (ii) , and at least one of LA1 and LE1 iscleavable linker.46.The compound of claim 28, wherein the compound of Formula I is a compound of Formula I (iii) , and at least one of LA1, LA2, LA3, LE1, LE2 and LE3 isa cleavable linker.47.The compound of claim 28, wherein the compound of Formula I (iii) is a compound of Formula I (iii-a) and at least one of LA1, LA2, LA3, and LE1 isa cleavable linker.48.The compound of claim 28, wherein the compound of Formula I is a compound of Formula I (iv) , and one of LA and LE1 is a cleavable linker.49.The compound of any one of claims 1-48, wherein Z is a linear polypeptide comprising at least 20 amino acids.50.The compound of claim 49, wherein Z is a linear polypeptide comprising about 20 to about 80 amino acids.51.The compound of claim 50, wherein Z is a linear polypeptide comprising about 20 to about 65 amino acids.52.The compound of any one of claims 1-51, wherein Z specifically binds to a target selected from the group consisting of B7 Homolog 3 (B7-H3) , prostate specific membrane antigen (PSMA) , glucagon-like peptide-1 receptor (GLP-1R) , glucose-dependent insulinotropic peptide (gastric inhibitory peptide; GIP) receptor (GIP-R) , cholecystokinin-2 receptor (CCK2R) , somatostatin receptor 2 (SSTR2) , neuropeptide Y receptor type 1 (Y1R) , nectin-4, epithelial cell adhesion molecule (EpCAM) , insulin-like growth factor-1 (IGF-1) , and human epidermal growth factor receptor 2 (HER2) .53.The compound of claim 52, wherein Z specifically binds to GLP-1R or GIP-R.54.The compound of claim 53, wherein Z specifically binds to GIP-R and comprises or consists of an amino acid sequence of: Xa1Xa2EGT FXa7SDY SIAXa14D Xa16 Xa17Xa18 Xa19Xa20 Xa21FXa23NW LL Xa28Xa29 (SEQ ID NO. 4) ,whereinXa1 is selected from histidine (His) , tyrosine (Tyr) , D-Tyr, Phe, des-amino histidine, and des-amino tyrosine;Xa2 is selected from alanine (Ala) , D-Ala and 2-aminoisobutyric acid (Aib) ;Xa7is selected from threonine (Thr) and isoleucine (Ile) ;Xa14 is selected from norleucine (Nle) , methionine (Met) and leucine (Leu) ;Xa16 is selected from lysine (Lys) , (Serine) Ser, Thr, His, Aib, arginine (Arg) and (glutamic acid) Glu;Xa17 is selected from glutamine (Gln) and (isoleucine) Ile;Xa18 is selected from Arg and His;Xa19 is selected from Gln and Ala;Xa20 is selected from Gln, Aib, His, Arg and Lys;Xa21 is selected from aspartic acid (Asp) , Lys, Glu, Thr, Ala;Xa23 is selected from valine (Val) , Ile, Leu, (phenylalanine) Phe and Lys;Xa28 is selected from Glu, Ser and Ala; andXa29 is selected from Gln, glycine (Gly) , Ala and Lys.55.The compound of claim 54, wherein Z specifically binds to GIP-R and comprises or consists of an amino acid sequence of: Xa1Xa2EGT FXa7SDY SIAXa14D Xa16 Xa17Xa18 Xa19Xa20 Xa21FXa23NW LL Xa28Xa29 Xa30Xa31Xa32Xa33G Xa35 Xa36 Xa37 Xa38 Xa39Xa40 (SEQ ID NO. 5) ,whereinXa1 is selected from histidine (His) , tyrosine (Tyr) , D-Tyr, Phe, des-amino histidine, and des-amino tyrosine;Xa2 is selected from alanine (Ala) , D-Ala and 2-aminoisobutyric acid (Aib) ;Xa7 is selected from threonine (Thr) and isoleucine (Ile) ;Xa14 is selected from norleucine (Nle) , methionine (Met) and leucine (Leu) ;Xa16 is selected from lysine (Lys) , serine (Ser) , Thr, His, Aib, arginine (Arg) and glutamic acid (Glu) ;Xa17 is selected from glutamine (Gln) and Ile;Xa18 is selected from Arg and His;Xa19 is selected from Gln and Ala;Xa20 is selected from Gln, Aib, His, Arg and Lys;Xa21 is selected from aspartic acid (Asp) , Lys, Glu, Thr and Ala;Xa23 is selected from valine (Val) , Ile, leucine (Leu) , phenylalanine (Phe) and Lys;Xa28 is selected from Glu, Ser and Ala;Xa29 is selected from Gln, glycine (Gly) , Ala and Lys;Xa30 is selected from Gly, Ser, D-Ser, and Lys;Xa31 is selected from proline (Pro) , and D-Pro;Xa32 is selected from Ser, Glu, and D-Ser;Xa33 is selected from Ser, Glu, and D-Ser;Xa35 is selected from Ala, Ser, Glu, and D-Ala;Xa36 is selected from Pro, and D-Pro;Xa37 is selected from Pro, and D-Pro;Xa38 is selected from Pro, and D-Pro;Xa39 is selected from Ser, Glu, or D-Ser; andXa40 is absent or is Lys.56.The compound of claim 54 or 55, wherein each of LZ, A and each E is independently covalently linked to an amino acid residue of Z selected from Xa16, Xa18, Xa20, Xa21, Xa23, Xa29, Xa30, and Xa40.57.The compound of claim 54 or 55, wherein LZ or A are covalently linked to Xa21 of Z and E is covalently linked to Xa40of Z, and Xa21 and Xa40 are both lysine.58.The compound of claim 54 or 55, wherein LZ is covalently linked Xa21, and Xa21 is lysine and Xa40 is absent.59.The compound of claim 53, wherein Z specifically binds to GLP-1R and comprises or consists of an amino acid sequence of: Xb1Xb2EGT FTSDXb10 SXb12Xb13Xb14E X16Xb17Xb18AX20 Xb21FXb23AW LXb27X28Xb29 (SEQ ID NO. 6) ,whereinXb1 is selected from alanine (Ala) , glycine (Gly) , histidine (His) , valine (Val) , Leucine (Leu) , isoleucine (Ile) , threonine (Thr) , and serine (Ser) ;Xb2 is selected from Ala, D-Ala and Aib;Xb10 is selected from Val and Leu;Xb12 is selected from Ser, lysine (Lys) and arginine (Arg) ;Xb13 is selected from tyrosine (Tyr) and glutamine (Gln) ;Xb14 is selected from Leu, Nle and methionine (Met) ;Xb16 is selected from glutamic acid (Glu) , Ser, Thr, His, Aib, Arg and Lys;Xb17 is selected from Gln, Glu and Arg;Xb18 is selected from Ala and Val;Xb20 is selected from Gln and Lys;Xb21 is selected from Glu, Asp and Leu;Xb23 is selected from Ile, Val, Leu and Phe;Xb27 is selected from Val and Lys;Xb28 is Lys; andXb29 is Gly.60.The compound of claim 59, wherein the GLP-1R binding group comprises or consists of an amino acid sequence of: Xb1Xb2EGT FTSDXb10 SXb12Xb13Xb14E X16Xb17Xb18AX20 Xb21FXb23AW L Xb27X28Xb29Xb30 Xb31Xb32Xb33G Xb35 Xb36 Xb37 Xb38 Xb39Xb40 (SEQ ID NO. 7) ,whereinXb1 is selected from Ala, Gly, His, Val, Leu, Ile, Thr, Ser and Aib;Xb2 is selected from Ala, D-Ala and Aib;Xb10 is selected from Val and Leu;Xb12 is selected from Ser, Lys and Arg;Xb13 is selected from Tyr and Gln;Xb14 is selected from Leu, Nle and Met;Xb16 is selected from Glu and Lys;Xb17 is selected from Gln, Glu and Arg;Xb18 is selected from Ala and Val;Xb20 is selected from Gln and Lys;Xb21 is selected from Glu and Leu;Xb23 is Ile;Xb27 is selected from Val and Lys;Xb28 is Lys;Xb29 is Gly;Xb30 is selected from Gly, and Lys;Xb31 is selected from Pro, and D-Pro;Xb32 is selected from Ser, Glu, and D-Ser;Xb33 is selected from Ser, Glu, and D-Ser;Xb35 is selected from Ala, Ser, Glu, and D-Ala;Xb36 is selected from Pro, and D-Pro;Xb37 is selected from Pro, and D-Pro;Xb38 is selected from Pro, and D-Pro;Xb39 is selected from Ser, Glu, and D-Ser; andXb40 is absent or Lys.61.The compound of claim 59 or 60, wherein each of LZ, A and each E is independently covalently linked to an amino acid residue of Z selected from Xb16, Xb20, Xb21, Xb23, Xb28, Xb29, Xb30, or Xb40.62.The compound of claim 59 or 60, wherein LZ and A are covalently linked to Xb28 of Z and E is covalently linked to Xb40, and Xb28 and Xb40 are both lysine.63.The compound of claim 59 or 60, wherein LZ or T is covalently linked to Xb28 of Z, Xb28 is lysine and Xb40is absent.64.The compound of claim 52, wherein Z specifically binds to B7-H3 and comprises or consists of an amino acid sequence of: AEAKXc5 AKEKI Xc11ALXc14E IIWLP NLTXc19Xc20 QIXc23AF IAXc28LN DDPSQ SSELL SEAKK LXc47Xc48SQ Xc51Xc52Xc53Xc54Xc55 (SEQ ID NO. 27) ,whereinXc5 is selected from Phe or Tyr;Xc11 is selected from Lys, Asn or Ala;Xc14 is selected from Ser or Gly;Xc19 is selected from Tyr or His;Xc20 is selected from Gly or Asp;Xc23 is selected from Lys or Met;Xc28 is selected from Lys or Ala;Xc47 is selected from Ser or Asn;Xc48 is selected from Glu or Asp;Xc51 is selected from null or Gly;Xc52 is selected from null or Gly;Xc53 is selected from null or Gly;Xc54 is selected from Cys or Lys; andXc55 is selected from null or Ala.65.The compound of claim 64, wherein Z specifically binds to B7-H3 and comprises or consists of an amino acid sequence having at least 80%identity with AEAKFAKEKI KALSEIIWLP NLTYGQIKAF IAKLNDDPSQ SSELLSEAKK LSESQGGGCA (SEQ ID NO. 29) .66.The compound of claim 64 or 65, wherein LZ is covalently linked to Xc54 of Z.67.The compound of claim 66, wherein Xc54 is Cys, and LZ is covalently linked to Xc54 and comprises a structure selected from the group consisting of 68.The compound of claim 1, wherein the compound of Formula I is selected from any one in Table 1.69.A radionuclide complex, comprising the compound of any one of claims 1-68 and a radionuclide.70.The radionuclide complex of claim 69, wherein the radionuclide is selected from the group consisting of99Tc, 99mTc, 188Re, 186Re, 153Sm, 66Ga, 67Ga, 68Ga, 111In, 123In, 59Fe, 63Zn, 52Fe, 52Mn, 45Ti, 60Cu, 61Cu, 67Cu, 64Cu, 62Cu, 82Rb, 195mPt, 191mPt, 193mPt, 117mSn, 89Zr, 177Lu, 18F, 188Re, 186Re, 153Sm, 66Ho, 86Y , 87Y , 90Y, 89Sr, 153Gd, 159Gd, 225Ac, 212Bi, 213Bi, 198Au, 199Au, 193mPt, 197Pt, 103Pd, 109Pd, 105Rh, 101mRh, 103mRh, 223Ra, 224Ra, 97Ru, 227Th, 229Th, 161Tb, 149Tb, 203Pb, 212Pb, 201TI, 119Sb, 58mCo, 55 Co, 57Co, 47Sc, 149Pm, 142Pr, 161Ho, 166Ho, 175Yb, and 51Cr.71.A pharmaceutical composition, comprising the compound of any one of claims 1-68 or the radionuclide complex of claim 69 or 70, and a pharmaceutically acceptable excipient.72.A kit, comprising:(1) the compound of any one of claims 1-68 or the radionuclide complex of claim 69 or 70, and(2) instructions for using the kit to diagnose a disease or disorder in a subject in need thereof.73.A method of treating a disease or disorder in a subject in need thereof, comprising administering to the subject a pharmaceutical effective amount of the compound of any one of claims 1-68 or the radionuclide complex of claim 69 or 70.74.A method of inhibiting proliferative activity in a cell, comprising administering an effective amount of the compound of any one of claims 1-68 or the radionuclide complex of claim 69 or 70.75.A method of imaging a tissue in a subject, comprising:(1) administering an imaging effective amount a pharmaceutical effective amount of the compound of any one of claims 1-68 or the radionuclide complex of claim 69 or 70, to a subject in need thereof, and(2) applying an imaging technique to detect emitted gamma rays.76.A method of diagnosing cancer in subject comprising:(1) administering a diagnostic effective amount a pharmaceutical effective amount of the compound of any one of claims 1-68 or the radionuclide complex of claim 69 or 70, and(2) applying an imaging technique to detect emitted gamma rays.