Peptides and compositions for treatment of joint damage
The present invention provides new protease-resistant polypeptides, as well as compositions and methods for treating, ameliorating or preventing conditions related to joint damage, including acute joint injury and arthritis.
1. A method of inducing differentiation of mesenchymal stem cells into chondrocytes, the method comprising contacting mesenchymal stem cells in the joint of a subject suffering from arthritis or cartilage damage with an effective amount of a polypeptide comprising an amino acid sequence that has at least 95% amino acid sequence identity to an amino acid sequence selected from any one of SEQ ID NOs: 58-70, wherein the amino acid at position 423, as determined with reference to SEQ ID NO: 1, is deleted, to induce differentiation of the mesenchymal stem cells into chondrocytes, wherein said contacting is achieved by intra-articular delivery of the polypeptide to said subject.
2. The method of claim 1 , wherein the subject is a human subject.
3. The method of claim 2 , wherein the arthritis is osteoarthritis, traumatic arthritis, or autoimmune arthritis.
4. The method of claim 2 , wherein the polypeptide comprises an amino acid sequence selected from any one of SEQ ID NOs: 58-70.
5. The method of claim 2 , wherein the polypeptide consists of an amino acid sequence selected from any one of SEQ ID NOs: 58-70.
6. The method of claim 2 , wherein the polypeptide is PEGylated.
7. The method of claim 2 , wherein the polypeptide is fused to a heterologous peptide selected from any of human serum albumin (HSA), immunoglobulin heavy chain constant region (Fc), polyhistidine, glutathione S transferase (GST), thioredoxin, protein A, protein G, or maltose binding protein (MBP), or a fragment thereof, wherein the heterologous peptide is fused at either the amino-terminal end or the carboxy-terminal end of the polypeptide.
8. The method of claim 2 , further comprising administering one or more additional chondrogenic factors to the subject.
9. The method of claim 2 , further comprising performing a surgical procedure on an affected joint of the subject.
10. A method of treating or ameliorating arthritis or cartilage damage in a joint of a subject in need thereof comprising administering to the subject at a site in need of treatment or by intra-articular delivery a therapeutically effective amount of a polypeptide comprising an amino acid sequence that has at least 95% amino acid sequence identity to an amino acid sequence selected from any one of SEQ ID NOs: 58-70, wherein the amino acid at position 423, as determined with reference to SEQ ID NO: 1, is deleted.
11. The method of claim 10 , wherein the subject is a human.
12. The method of claim 10 , wherein the arthritis is osteoarthritis, trauma traumatic arthritis, or autoimmune arthritis.
13. The method of claim 10 , wherein the polypeptide comprises an amino acid sequence selected from any one of SEQ ID NOs: 58-70.
14. The method of claim 10 , wherein the polypeptide consists of an amino acid sequence selected from any one of SEQ ID NOs: 58-70.
15. The method of claim 10 , wherein the polypeptide is PEGylated.
16. The method of claim 10 , wherein the polypeptide is fused to a heterologous peptide selected from any of human serum albumin (HSA), immunoglobulin heavy chain constant region (Fc), polyhistidine, glutathione S transferase (GST), thioredoxin, protein A, protein G, or maltose binding protein (MBP), or a fragment thereof, wherein the heterologous peptide is fused at either the amino-terminal end or the carboxy-terminal end of the polypeptide.
17. The method of claim 10 , wherein the polypeptide is administered in a matrix or biocompatible scaffold.
18. The method of claim 10 , further comprising administering one or more additional chondrogenic factors to the subject.
19. The method of claim 10 , further comprising performing a surgical procedure on an affected joint of the subject.
20. The method of claim 10 , further comprising performing one or more of the following procedure to the subject: bone marrow stimulation, cartilage replacement, autologous chondrocyte implantation (ACI), matrix-induced autologous chondrocyte implantation (MACI).