203 results about "Binding peptide" patented technology

The invention discloses a human albumin binding peptide 1E3 and application of the human albumin binding peptide 1E3 in promoting purification of human albumin, and belongs to the technical field of polypeptides. The human albumin binding peptide comprises an amino acid sequence as shown in SEQ ID NO. 1; and / or an amino acid sequence of a fusion protein with the same function, which is obtained by connecting tag protein to the N terminal and / or C terminal of the amino acid sequence as shown in SEQ ID NO.1. The human albumin binding peptide has extremely high affinity with human albumin and can be used for separating and purifying a human albumin solution, and the purity of the purified human albumin far exceeds the pharmacopoeia standard and can reach 99.99% or above. The method is good in safety and stable in process, and has a wide application prospect in the aspect of separation and purification of the human albumin.

The invention provides a DHODH polypeptide degradation agent and application of the DHODH polypeptide degradation agent in preparation of drugs for preventing and / or treating DHODH-mediated diseases, and belongs to the technical field of biological medicines. The invention provides a DHODH polypeptide degradation agent. The DHODH polypeptide degradation agent comprises a cell-penetrating peptide, a DHODH binding peptide, a linker and an E3 ubiquitin ligase VHL binding peptide which are sequentially connected from an N terminal to a C terminal. The DHODH polypeptide degradation agent provided by the invention can be efficiently combined with DHODH protein, and has a good anti-tumor effect on the cellular level and the animal level. The compound has a good application prospect in preparation of drugs for preventing and treating DHODH-mediated diseases, overcomes the defects that existing drugs for treating DHODH-related diseases are single in variety and insufficient in curative effect, and has important significance.

The application provides a preparation method of a functionalized phage probe and application of the functionalized phage probe in detection of escherichia coli. The functionalized phage is a recombinant phage (M13KO7@SaBP) in which streptavidin binding peptide (SaBP) is fused and expressed at the N terminal of the main capsid protein P8 protein of M13K07 phage. In the application, the gene encoding SaBP (MDVEAWLGAR) is inserted into the N terminal of the P8 protein gene of M13K07 phage by site-directed mutagenesis to prepare M13K07@SaBP. The stable signal amplification is realized by using the abundant P8 protein (about 2700) of M13 phage and the super strong binding force of biotin-streptavidin, the interference of food sample matrix is reduced by combining the magnetic separation technology, and a detection method of escherichia coli with high sensitivity and small sample matrix interference is constructed.

Provided herein are antigen binding proteins (ABPs) that bind HLA-PEPTIDE targets. Also disclosed are methods for identifying the HLA-PEPTIDE targets and methods of treating cancers and other diseases using the disclosed ABPs.

The present invention relates to an anti-apolipoprotein E4 (ApoE4) antibody and use thereof and, more specifically, to: an anti-ApoE4 antibody or an antigen-binding fragment thereof; a fusion in which the anti-ApoE4 antibody or an antigen-binding fragment thereof and one or more blood-brain barrier (BBB) receptor-binding peptides are bound; a method for preparing the fusion; and a composition for preventing or treating neurodegenerative diseases or metabolic diseases, comprising the anti-ApoE4 antibody or an antigen-binding fragment thereof, or the fusion.

The present disclosure relates to compositions and methods for treating viral infections. Compositions and methods for treating viral infections include conjugates comprising a viral neuraminidase inhibitor (e.g., zanamivir, peramivir, or an analog thereof) linked to an Fc monomer, an Fc domain, and an Fc binding peptide, albumin, or an albumin binding peptide. In particular, the conjugates are useful in the treatment of viral infections (e.g., influenza virus infections).

The application provides a toxicity-enhanced neurotoxin recombinant protein and application thereof, and belongs to the technical field of biological medicine. The recombinant protein comprises a botulinum toxin type A receptor binding domain and at least one GM1 binding peptide inserted into the botulinum toxin type A receptor binding domain, and the recombinin protein can recognize and bind to ganglioside GM1. The short peptide sequence capable of binding to ganglioside GM1 is introduced into the botulinum toxin type A receptor binding domain to obtain the recombinant protein, the binding capacity of the recombinant protein to ganglioside GM1 is enhanced, the target recognition and binding capacity of the recombinant protein to the nerve cell membrane are improved, the overall affinity and endocytosis efficiency of the recombinant protein to the nerve cell are improved, and the neurotoxicity of the botulinum toxin is enhanced. The application not only improves the binding efficiency of BoNT / A in the in-vitro nerve cell model, but also shows a higher toxicity level in the functional verification, and shows a good clinical conversion prospect.

A method for generating binding peptides presented by any given Major Histocompatibility Complex (MHC) protein is presented. The method includes, given a peptide and an MHC protein pair, enabling a Reinforcement Learning (RL) agent to interact with and exploit a peptide mutation environment by repeatedly mutating the peptide and observing an observation score of the peptide, learning to form a mutation policy, via a mutation policy network, to iteratively mutate amino acids of the peptide to obtain desired presentation scores, and generating, based on the desired presentation scores, qualified peptides and binding motifs of MHC Class I proteins.

The present disclosure relates to collagen binding modification engineering of anti-inflammatory agents using collagen binding peptides (CBP) and vWF A3 to achieve targeted therapy of inflammatory diseases. Accordingly, embodiments of the present disclosure relate to compositions comprising an anti-inflammatory agent operably linked to an extracellular matrix (ECM) affinity peptide. Also disclosed are cytokines and anti-inflammatory agents, such as CD200, linked to serum proteins and / or ECM affinity peptides. Other aspects of the present disclosure relate to methods for treating an autoimmune or inflammatory disorder in a subject comprising administering to the subject a composition of the present disclosure.

This invention describes of a means of stabilizing lipophilic drugs for long-term storage by incorporating them into a “thermally stabilized nanoemulsion” that has a phase transition temperature that is at or below the body temperature of 37 C and above a storage temperature of 4-8 C. One or more lipid soluble drugs are incorporated into the nanoemulsion at an elevated temperature above the phase transition temperature of the nanoemulsion and then stabilized for extended storage by lowering the temperature to below its phase transition temperature. This causes the nanoemulsion to transform into solid lipid nanospheres entrapping the drug within the solid lipid matrix. Upon rewarming the lipid nanospheres they will reconvert to an oil-in-water nanoemulsion suitable for administration to the patient in need. This invention further discloses disease targeting thermally stabilized nanoemulsions utilizing targeting agents such as antibodies, aptamers, binding peptides, hormones, cytokines and the like, attached to the exterior of the nanodroplets comprising the nanoemulsion.

The invention relates to a ligand targeting neutrophil and neurons as well as a preparation method and application of the ligand. The ligand for targeting the neutrophil and the neuron is prepared from the following raw materials in parts by weight: 30 to 50 parts of DSPE-PEG-Tet1, 2 to 3 parts of ketal thiol with carboxyl groups at two ends and 30 to 50 parts of a neutrophil targeting ligand, the neutrophil targeting ligand is one or more of sialic acid, an anti-CD66b antibody, an anti-CD177 antibody, an anti-CD16b antibody, N-formylmethionine peptide (fMLF) and an analogue thereof, a CXCR1 / CXCR2 binding peptide, an integrin binding peptide, a selectin ligand and lectin. According to the invention, sequential targeting of neutrophile granulocytes-neurons can be realized, target cells of ischemic lesions can be accurately protected, and the improvement effect on the cerebral infarction area of MCAO rats can be obviously enhanced.

Disclosed herein, are peptides that bind urokinase-type plasminogen activator receptors. The peptides may comprise amino acid sequences of IPPWEAPK (SEQ ID NO: 1), DLAQCQTPTQAAPPTPVSPR (SEQ ID NO: 2), or LHVPLMPAQPAPPK (SEQ ID NO: 3), or retro-inverso amino acid sequences of the above enumerated sequences. Also described herein, are methods of administering compounds comprising peptides that bind urokinase-type plasminogen activator receptors to subjects for the treatment of ovarian cancer and improving wound closure.

The present invention provides novel antigen-binding peptides, such as antibodies or antibody fragments, that specifically bind to selective FXIa inhibitors and / or dual inhibitors of FXIa and plasma kallikrein.The present invention further relates to a method of reducing the antithrombotic effect of FXIa inhibitors by administering to a subject a pharma- ceutical effective amount of the antigen-binding peptides disclosed herein.In addition, the present invention provides detection reagents and methods for detecting FXIa inhibitor levels in biological samples. TIFF2024505390000129.tif113125

A system for binding peptide search for immunotherapy is presented. The system includes employing a deep neural network to predict a peptide presentation given Major Histocompatibility Complex allele sequences and peptide sequences, training a Variational Autoencoder (VAE) to reconstruct peptides by converting the peptide sequences into continuous embedding vectors, running a Monte Carlo Tree Search to generate a first set of positive peptide vaccine candidates, running a Bayesian Optimization search with the trained VAE and a Backpropagation search with the trained VAE to generate a second set of positive peptide vaccine candidates, using a sampling from a Position Weight Matrix (sPWM) to generate a third set of positive peptide vaccine candidates, screening and merging the first, second, and third sets of positive peptide vaccine candidates, and outputting qualified peptides for immunotherapy from the screened and merged sets of positive peptide vaccine candidates to support downstream clinical decision making.

The present disclosure relates to methods of producing and screening libraries of disulfide rich proteins, for instance to identify binding peptides specific for a target molecule. In some embodiments, the binding peptides comprise disulfide rich proteins. Also provided herein are methods of producing and screening libraries comprising disulfide-rich proteins and molecular chaperones. The present disclosure also relates to methods of producing or expressing soluble disulfide rich proteins, for instance using a suitable host cell. Also provided herein are compositions comprising soluble disulfide rich proteins.

The present invention relates to compositions and methods of GDNF fusion polypeptides, wherein the GDNF fusion polypeptides include an Fc domain, an albumin-binding peptide, a fibronectin domain, or a human serum albumin, joined to a GDNF variant either directly or by the way of a linker. The GDNF fusion polypeptides may used to treat metabolic diseases, such as obesity and Type-1 and Type-2 diabetes, and neurological diseases, such as Amyotrophic lateral sclerosis (ALS) and Parkinson's disease.

The invention relates to β-catenin-binding peptides and peptidomimetics comprising an amino acid sequence ESILDEHXQRVW or EYPESILDEHXQRVWR, wherein X is L, M, I, F, Y, W or C, or a variant of said amino acid sequences, and to uses thereof.

The present invention relates to a peptide of 12 to 30 amino acids, said peptide comprising the sequence SEQ ID NO: 1 represented by:(SEQ ID NO: 1)V-X1-X2-R-X3-E-W-X4-X5-X6-Y-W,wherein each of X1, X2, X3, X4, X5, and X6 independently corresponds to any amino acid, andwherein said peptide binds to the EGF receptor variant III (EGFRvIII), as well as products incorporating such peptide and uses thereof.

Novel peptides that bind to the human transferrin receptor (hTfR) are provided. The peptide is a peptide comprising an amino acid sequence described in Ala-Val-MePhe-Val-Trp-Asn-Tyr-Tyr-Ile-Ile-K(MePEG4c)-Arg-Phe-MeTyr-Cys (SEQ ID NO: 1), or the peptide comprising one or more predetermined substitutions in the amino acid sequence described in SEQ ID NO:1.

This invention provides a LYTACA polypeptide complex (sRD-Lytaca) targeting the degradation of soluble IL-17RD (sIL-17RD), its preparation method, and its applications. This polypeptide complex is formed by the self-assembly of the sIL-17RD-binding peptide sRDL and the scavenger receptor-binding peptide SRAL after Nap-FF modification and mixing. sRDL can be conjugated with fluorescently labeled molecules to prepare detection reagents for the detection of sIL-17RD. This invention also provides a variant with at least 80% sequence identity with sRDL and retaining binding ability, and pharmaceutical compositions containing sRDL and / or sRD-Lytaca. This invention provides a new technical means for the prevention and treatment of osteoarthritis and diseases related to sIL-17RD protein (such as rheumatoid arthritis).

The present invention relates to a polypeptide forming one part of a two-part linker wherein the polypeptide (protein) spontaneously forms an isopeptide bond with a peptide tag, i.e. The other part of the two-part linker. The invention also relates to a method for producing a polypeptide of the invention and to the use of said polypeptide. According to the present invention, the reaction rate of the Sdy-Catcher variant obtained through mutation is significantly improved compared to the reaction rate of Sdy-Tag, such that the ideal direction is provided for the searching of polypeptides with characteristics of high binding rate and good binding effect in the field.

The invention discloses a human albumin binding peptide 1A3 and application thereof in purification of human albumin, and belongs to the technical field of polypeptides. The amino acid sequence of the human albumin binding peptide comprises an amino acid sequence as shown in SEQ ID NO. 1; and / or an amino acid sequence of a fusion protein with the same function, which is obtained by connecting tag protein to the N terminal and / or C terminal of the amino acid sequence as shown in SEQ ID NO.1. The human albumin binding peptide has extremely high affinity with human albumin and can be used for separating and purifying a human albumin solution, and the purity of the purified human albumin far exceeds the pharmacopoeia standard and can reach 99.99% or above. The method is good in safety and stable in process, and has a wide application prospect in the aspect of separation and purification of the human albumin.

The invention belongs to the field of polypeptides, and particularly relates to a TLR4 binding peptide and application thereof. The specific technical scheme is as follows: the nucleotide sequence of the polypeptide is edited as shown in SEQ ID NO: 1. The binding peptide containing 67 amino acids is screened out, is good in solubility, can be stably bound with TLR4, and is expected to become a new medicine for treating or relieving pain including chronic pain. The polypeptide can also be prepared into health care products, special medical foods and the like with the function of treating or relieving pain according to actual conditions.

The application provides a DNA tetrahedron-based complex and a preparation method and application thereof, and belongs to the field of medicines. The application designs a functionalized DNA tetrahedron complex modified bioactive composite hydrogel scaffold containing BMP-2, combines the functionalized BMP-2 binding peptide with the tetrahedron framework structure with unique three-dimensional spatial structure and fine programmability through a chemical clicking mode, and further prepares the composite hydrogel scaffold by combining with methacrylated hyaluronic acid. The functionalized DNA tetrahedron complex realizes the performance of efficiently capturing BMP-2, and the composite hydrogel scaffold realizes the targeted capture of endogenous BMP-2 in the early stage of bone defect and stimulates the osteogenic differentiation of stem cells to promote in-situ osteogenesis, avoids a series of complications caused by the delivery of exogenous bone morphogenetic protein-2, and solves the problems of poor in-vivo stability, safety and high cost, and has a good application prospect.

The invention relates to the technical field of biological medicine. The invention provides a PCSK9-targeted PROTAC oral drug as well as a preparation method and application thereof. The drug comprises the following structures: a PCSK9 binding peptide, an E3 ubiquitin ligase ligand, a cell penetrating peptide and a flexible linker. The medicine provided by the invention can be used for preparing products for treating lipid metabolism disorder diseases such as hypercholesteremia and atherosclerosis. In addition, the medicine disclosed by the invention can also be combined with statins to synergistically enhance the lipid-lowering curative effect.

Provided is a use of a recombinant fusion protein in the preparation of a drug for treating an autoimmune disease that can benefit from the reduction or elimination of CD20+B cells (for example, CD20+ B cell depletion therapy). The recombinant fusion protein comprises i) a CD47-binding peptide, and ii) an anti-CD20 antibody or an antigen-binding portion thereof, wherein the CD47-binding peptide comprises a first extracellular Ig-like domain (SIRPαD1) of signal regulatory protein α (SIRPα), and the anti-CD20 antibody or the antigen-binding portion thereof comprises a heavy chain variable region, a heavy chain constant region, a light chain variable region, and a light chain constant region. The heavy chain variable region comprises VH-CDR1, VH-CDR2, and VH-CDR3, and the light chain variable region comprises VL-CDR1, VL-CDR2, and VL-CDR3, wherein the VH-CDR1, VH-CDR2, VH-CDR3, VL-CDR1, VL-CDR2, and VL-CDR3 respectively comprise amino acid sequences as shown in GYTFTSYN (SEQ ID NO: 1), IYPGNGDT (SEQ ID NO: 2), ARSTYYGGDWYFNV (SEQ ID NO: 3), SSVSY (SEQ ID NO: 4), ATS, and QQWTSNPPT (SEQ ID NO: 5). The heavy chain constant region has the binding capacity for an FcR or a complement system protein. The CD47-binding peptide is linked to the N-terminus of the heavy chain variable region or light chain variable region of the anti-CD20 antibody or the antigen-binding portion thereof.

The present disclosure provides a heterodimeric antibody, or antigen-binding fragment thereof, comprising two heavy chains with different amino acid sequences and a binding polypeptide. The heterodimer antibody, or the antigen-binding fragment thereof, include a first heavy chain comprising none or one or more modifications and the second heavy chain comprises one or more modifications and is fused to a binding polypeptide, which can form a isopeptide bond with a binding peptide. The present disclosure further provides systems and methods for purifying such heterodimeric antibodies, and antigen-binding fragments thereof.

Provided herein are conjugates for selective delivery of a therapeutic molecule, such as an oligonucleotide, to adipose tissue. In particular, the conjugate includes a NPR-C binding peptide, a therapeutic agent (e.g., an oligonucleotide), and optionally a linker conjugating the peptide to the therapeutic agent. The conjugates can also include one or more fatty acids. Also provided herein are methods and uses of treating diseases and conditions associated with adipose tissue (e.g., obesity or obesity-related comorbidity) by the conjugates described herein.

Provided are TRPV6 binding peptide-drug conjugates (PDCs), methods of synthesizing the PDCs, and related compositions and methods for treating diseases such as cancers.

This article describes multispecific antigen-binding peptides comprising at least three antigen-binding moieties, each of which pairs with a universal light chain peptide. This article also describes multispecific antigen-binding peptides comprising a first antigen-binding moieties and a second antigen-binding moieties, wherein the C-terminus of the CH1 region of the first antigen-binding moieties is coupled to the N-terminus of the heavy chain variable region of the second antigen-binding moieties.