A composition for delivering cargo molecules across biological membranes is provided comprising (i) a peptide comprising consecutive amino acid residues having the sequence set forth in SEQ ID NO 1 for the transport of a cargo molecule across a biological membrane and (ii) the cargo molecule, wherein the cargo molecule is not a peptide comprising amino acid residues having the sequence set forth in SEQ ID NO 4. Methods of delivering cargo molecules across biological membranes are also provided. Methods of treating a tumor, cancer, a metabolic disorder, and a cardiovascular disorder are also provided.
1. A composition comprising (i) a peptide comprising consecutive amino acid residues 22-173 of the sequence set forth in SEQ ID NO:1, or a portion of amino acid residues 22-173 of SEQ ID NO:1, for the transport of a cargo molecule across a biological membrane and (ii) the cargo molecule, wherein the cargo molecule is not a peptide comprising amino acid residues having the sequence set forth in SEQ ID NO:4, wherein the cargo molecule is attached to the peptide for transport via a polymeric linker.
2. A method for delivering a cargo molecule into a cell, comprising contacting the cell with a composition comprising (i) a peptide comprising consecutive amino acid residues 22-173 of the sequence set forth in SEQ ID NO:1, or a portion of the amino acid residues set forth in SEQ ID NO:1, for the transport of the cargo molecule across a biological membrane and (ii) the cargo molecule, wherein the cargo molecule is not a peptide comprising amino acid residues having the sequence set forth in SEQ ID NO:4, under conditions permitting the entry of the cargo molecule into the cell, wherein the cargo molecule is a nucleic acid and encodes a human p53 protein.
3. A method for delivering a cargo molecule into a cell, comprising contacting the cell with a composition comprising (i) a peptide comprising consecutive amino acid residues 22-173 of the sequence set forth in SEQ ID NO:1, or a portion of the amino acid residues set forth in SEQ ID NO:1, for the transport of the cargo molecule across a biological membrane and (ii) the cargo molecule, wherein the cargo molecule is not a peptide comprising amino acid residues having the sequence set forth in SEQ ID NO:4, under conditions permitting the entry of the cargo molecule into the cell, wherein the cargo molecule is a human p53 protein.
4. A method for treating cancer in a subject comprising administering to the subject an amount of a composition comprising a peptide comprising amino acid residues 22-173 of SEQ ID NO:1, or a portion of amino acid residues 22-173 of SEQ ID NO:1, conjugated to a to a cargo molecule, wherein the cargo molecule is not a peptide comprising amino acid residues having the sequence set forth in SEQ ID NO:4 in an amount effective to treat the cancer in the subject, wherein the cargo molecule is a tumor suppressor protein.
5. A method for treating a metabolic disorder, wherein the metabolic disorder is characterized by a deficiency in a metabolic enzyme comprising administering to the subject an amount of a composition comprising a peptide comprising amino acid residues 22-173 of SEQ ID NO:1, or portion of amino acid residues 22-173 of SEQ ID NO:1, conjugated to the metabolic enzyme in an amount effective to treat the metabolic disorder in the subject.
6. A method for treating diabetes in a subject comprising administering to the subject an amount of a composition comprising a peptide comprising amino acid residues 22-173 of SEQ ID NO:1, or a portion of amino acid residues 22-173 of SEQ ID NO:1, conjugated to a cargo molecule in an amount effective to treat the diabetes in the subject.
7. A method for treating a cardiovascular disease in a subject comprising administering to the subject an amount of a composition comprising a peptide comprising amino acid residues 22-173 of SEQ ID NO:1, or a portion of amino acid residues 22-173 of SEQ ID NO:1, conjugated to a cargo molecule in an amount effective to treat the cardiovascular disease in the subject.