147 results about "Protein transduction domain" patented technology

The present invention relates to a pharmaceutical composition for treating heart diseases, neurodegenerative diseases, and diseases and conditions caused by apoptosis, which contains a conjugate of a heat shock protein (Hsp) and a protein transduction domain (PTD). According to the present invention, PTD-Hsp70 effectively suppresses apoptosis under low-oxygen conditions.

The present invention relates to a compound comprising a toxin linked to a translocator. Non-limiting examples of toxins of the present invention are botulimum toxin, butyricum toxin, tetani toxins and the light chains thereof. In some embodiments, the translocator of the present invention comprises a protein transduction domain.

The disclosure provides fusion polypeptides and constructs useful in delivering anionically charged nucleic acid molecules including diagnostics and therapeutics to a cell or subject. The fusion constructs include a protein transduction domain and a nucleic acid binding domain, or a protein transduction domain and a nucleic acid that is coated with one or more nucleic acid binding domains sufficient to neutralize an anionic charge on the nucleic acid. Also provided are methods of treating disease and disorders such as cell proliferative disorders.

The present invention discloses methods and materials for delivering a cargo compound into a cancer cell. Delivery of the cargo compound is accomplished by the use of protein transduction domains derived from cupredoxins. The invention further discloses methods for treating cancer and diagnosing cancer.

Methods and compositions for delivering polynucleotides are provided. One embodiment provides a non-viral vector comprising a recombinant polynucleotide-binding protein comprising a protein transduction domain operably linked to a targeting signal. Methods for modifying the genome of non-nuclear organelles are also provided.

Methods and compositions for delivering polynucleotides are provided. One embodiment provides a non-viral vector comprising a recombinant polynucleotide-binding protein comprising a protein transduction domain operably linked to a targeting signal.

The present invention discloses methods and materials for delivering a cargo compound into a cancer cell. Delivery of the cargo compound is accomplished by the use of protein transduction domains derived from cupredoxins. The invention further discloses methods for treating cancer and diagnosing cancer.

Disclosed are compositions for chimeric proteins comprising a protein transduction domain and a deaminase domain, mimetics or analog thereof, and uses of same.

Methods and compositions for delivering polynucleotides are provided. One embodiment provides a non-viral vector comprising a recombinant polynucleotide-binding protein comprising a protein transduction domain operably linked to a targeting signal. Methods for modifying the genome of non-nuclear organelles are also provided.

An amino acid sequence Arg-Lys-Met-Leu-Lys-Ser-Thr-Arg-Arg-Gln-Arg-Arg (SEQ ID NO:1) functions as a protein transduction domain (PTD) and is capable of delivering small molecules, proteins, and nucleic acids to an intracellular compartment of a cell. An amino terminal lysine linker improves the efficiency of the PTD. A nuclear localization signal can be used to target the PTD to a cell's nucleus. The PTD can be used in PTD-cargo moiety complexes that can reversibly immortalize cells and increase cell viability in culture.

The invention discloses a micro-molecule polypeptide TAT-p53DM and an application thereof to preparing a medicine for treating or preventing ischemic stroke. A fusion protein polypeptide TAT-p53DM of a TAT protein transduction domain and p53DM is artificially synthesized; TAT carries p53DM protein polypeptide to pass through a blood brain barrier through blood so as to be taken by nerve cells; used in an in-vitro and in-vivo ischemic stroke model, the micro-molecule polypeptide TAT-p53DM is capable of effectively playing a biological role in blocking binding between death domain of death associated protein kinase 1 (DAPK1DD) and tumor suppression protein p53DNA binding motifs (p53DM), inhibiting signals capable of causing neuronal apoptosis and necrosis at DAPK1 downstream, and reducing ischemic stroke brain injury; moreover, molecular targets are provided for further developing medicines for clinically treating ischemic stroke.

The present invention relates to isolated polypeptides comprising: (i) a protein transduction domain consisting of ZEBRA or a fragment thereof that retains the capacity of internalization, (ii) at least one CD4+ epitope; and (iii) at least one CD8+ epitope. It also relates to antigen presenting cells loaded with said polypeptides, and the use thereof in immunotherapy including prevention and / or treatment of cancers or infectious diseases.

The invention generally relates to synthetic mimics of cell penetrating peptides. More particularly, the invention relates to certain novel monomers, oligomers and polymers (e.g., co-polymers) that are useful for the preparation of synthetic mimics of cell penetrating peptides, their compositions, preparations and use.

The present invention provides polynucleotides and expression vectors containing a sequence encoding a soluble lysosomal enzyme and a sequence encoding Tat protein transduction domain (PTD), and the corresponding polypeptides. The present demonstrates the utility of these protein fusions in altering the bioavailability of proteins for use in treating genetic diseases or acquired diseases. The invention further provides cell expression systems, and methods of treating a genetic disease or cancer in a mammal using the polynucleotides, polypeptides, or expression system of the present invention.

Methods and compositions for delivering polynucleotides are provided. One embodiment provides a non-viral vector comprising a recombinant polynucleotide-binding protein comprising a protein transduction domain operably linked to a targeting signal. Methods for modifying the genome of non-nuclear organelles are also provided.

The present invention relates to non-activated Wnt inhibition polypeptides (WIPs) containing: (a) a protein transduction domain (PTD) which enables said WIPs to permeate a cell membrane without the aid of a cell membrane receptor; and (b) a Wnt antagonist domain which is inactive by itself, but is activated in mammalian cells and then secreted out of the cells to function to inhibit Wnt signal transduction. Also, the invention relates to a method for preparing said non-activated WIPs, and a pharmaceutical composition containing said WIPs as active ingredients. Said non-activated WIPs can be produced in large quantities through the culture of bacteria such as E coli., and are biochemically inactive before being administered into the human body, and thus the production cost thereof is only one several tenths of that of previously known active proteins (sFRPs, DKKs, etc.) having uses similar thereto, and the isolation / purification and handling / administration processes thereof are significantly simple and convenient. When said non-activated WIPs are administered in vivo, they will have the effects of inhibiting the invasive growth and metastasis of cancer cells and treating immune diseases, such as rheumatoid arthritis by pharmacological mechanisms different from those of the previously known sFRPs or DKKs.

The present invention is based on the innovative concept of conjugating a cell-penetrating peptide (CPP), including a protein transduction domain, to a nucleic acid molecule to provide a nucleic acid-protein conjugate exhibiting enhanced cellular uptake. Accordingly, the invention provides a method of producing a cell permeable nucleic acid molecule conjugate nucleic acid including a nucleic acid conjugated with a homeodomain of an antennapedia homeotic transcription factor protein (Antp), or functional fragment thereof. The invention further provides compositions and methods treating a subject using the conjugates produced by the method described herein.

An amino acid sequence Arg-Lys-Met-Leu-Lys-Ser-Thr-Arg-Arg-Gln-Arg-Arg (SEQ ID NO:1) functions as a protein transduction domain (PTD) and is capable of delivering small molecules, proteins, and nucleic acids to an intracellular compartment of a cell. An amino terminal lysine linker improves the efficiency of the PTD. A nuclear localization signal can be used to target the PTD to a cell's nucleus. The PTD can be used in PTD-cargo moiety complexes that can reversibly immortalize cells and increase cell viability in culture.

This invention relates to a method for in vivo and in vitro transferring efficiently DNA / RNA coding materials regulating bio-function to cytoplasm or nucleus in eukaryotic or prokaryotic cells using PTD (Protein Transduction Domain) and DNA / RNA binding factor. Particularly, this invention provides a method for in vivo transferring the materials to cells through various routes comprising intramuscular, intraperitoneal, intravein, oral, nasal, subcutaneous, intradermal, mucosal, inhalation. Accordingly, the method of this invention can be used for technology to transfer DNA / RNA to various cell types and express them in the cells transiently or permanently in medicinal applications such as DNA / RNA vaccine and gene therapy, as well as basic applications.

Lysostaphin is a bacteriocin secreted by S. simulans to kill S. aureus, and has been shown to also be a potent antimicrobial for many antibiotic-resistant strains of S. aureus. By adding a ˜13 amino acid protein transduction domain (PTD) from the HIV-TAT protein to lysostaphin to form lysostaphin-PTD, both extracellular and intracellular forms of S. aureus and MRSA are killed in all (multiple) cell types examined.

In one aspect, the invention provides a peptide comprising a chaperone-mediated autophagy (CMA)-targeting signal domain; a protein-binding domain that selectively binds to a target cytosolic protein; and a cell membrane penetrating domain (CMPD). In another aspect, the invention provides methods for reducing the intracellular expression level of an endogenous target protein in vitro and in an animal, wherein the method involves administration of the peptide. Methods are also provided for treating a pathological condition in an animal, the methods comprising administering the peptide to the animal. In one embodiment, the pathological condition is a neurodegenerative disease. In another embodiment of the invention, the target cytosolic protein is death associated protein kinase 1 and the CMPD is protein transduction domain of the HIV-1 Tat protein.

A composition for delivery of a molecule into a cell is provided. The composition includes a protein transduction domain that is conjugated to the molecule which is incorporated into a multilayered film. Preferably, the protein transduction domain is a cationic protein transduction domain. More preferably, the cationic protein transduction domain is nonaarginine, and the multilayered film includes polyelectrolyte multilayers. When the composition is presented to a cell, the multilayered film dissolves or erodes in physiological media, and the molecule is delivered into the cell.

Probes for detecting a target polynucleotide are provided. One aspect provides a molecular beacon probe set wherein the donor molecular beacon comprises a quantum dot and an acceptor molecular beacon comprises at least one reporter. The probes optionally comprise a protein transduction domain, targeting signal, or a combination thereof. Methods for detecting target polynucleotides using the disclosed probes are also provided.

The invention relates to an artificial transcription factor comprising a polydactyl zinc finger protein targeting specifically a receptor gene promoter fused to an inhibitory or activatory protein domain, a nuclear localization sequence, and a protein transduction domain. In particular examples these receptor gene promoters regulate the expression of the endothelin receptor A, the endothelin receptor B, the Toll-like receptor 4 or the high-affinity IgE receptor. Artificial transcription factors directed to the endothelin A or B receptors are useful in the treatment of diseases modulated by endothelin, such as cardiovascular diseases, and, in particular, eye diseases, e.g. retinal vein occlusion, retinal artery occlusion, macular edema, optic neuropathy, central serous chorioretinopathy, retinitis pigmentosa, Leber's hereditary optic neuropathy, and the like. Artificial transcription factors directed to the Toll-like receptor 4 or the IgE receptor are useful for the treatment of autoimmune disorders, and the like, and allergic disorders, respectively.

The invention discloses a recombination fusion protein PACAP-PTD (Pituitary Adenylate Cyclase Activating Peptide-Protein Transduction Domain) as well as an expression method and application thereof. The amino acid sequence of the recombination fusion protein PACAP-PTD provided by the invention is shown as SEQ ID NO: 1 and the nucleotide sequence encoding the protein is shown as SEQ ID NO: 2. The recombination fusion protein PACAP-PTD provided by the invention has biological activity of PACAP and gives a function of transcellular barrier transport of the PTD to the PACAP to ensure that the function of cellular barrier traversing transport can be provided, therefore, blood brain barrier, cornea, qi-blood barrier, testis barrier, endothelium and mucosa organization and the like can be effectively traversed; the application value of the PACAP-PTD in diseases related to parts of brain, eyes, lung, genitals and the like can be greatly enhanced; the route of administration can be improved; and the application range can be extended.

The present invention relates to a target-activated cell / tissue-penetrating peptide for delivery of impermeable compounds (Target Activated Cell / tissue Translocation peptide for Impermeable Compound Strategy (TACTICS)), and the use thereof, and more particularly to a target-activated cell / tissue-penetrating peptide, which comprises (a) a protein transduction domain (PTD), (b) a masking domain and (c) a spacer having a cleavage site specific for a target cell / tissue enzyme and is provided with target selectivity so as to penetrate specifically into a target tissue, and to a conjugate of the peptide with a drug or drug-containing particles for imaging or therapeutic applications. Because the target-activated cell / tissue-penetrating peptide has target selectivity, the peptide-drug conjugate exhibits maximized imaging and therapeutic effects, and the non-specific distribution of the conjugate in vivo is inhibited, so that the side effects of the conjugate are minimized, the diagnostic effects of the conjugate are maximized, and the conjugate is useful for the treatment of disease.