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Anti-Angiogenic Peptides
Identified in thrombospondin Type I domains

Anti-angiogenic peptides identified in thrombospondin type I domains

Thrombospondin 1, the prototypical protein of the thrombospondin protein family, is a potent endogenous inhibitor of angiogenesis. Although the effects of the thrombospondin 1 on neovascularization have been well studied, little is known about the anti-angiogenic potency of other proteins or peptide fragments derived from the proteins in this family. Here we identify a set of 18 novel, anti-angiogenic 17- to 20-amino acid peptides that are derived from proteins containing type I thrombospondin motifs. We have named these peptides adamtsostatin-4, adamtsostatin-16, adamtsostatin-18, cartilostatin-1, cartilostatin-2, fibulostatin-6.2, fibulostatin-6.3, papilostatin-1, papilostatin-2, properdistatin, scospondistatin, semastatin-5A.1, semastatin-5A.2, semastatin-5B, thrombostatin containing-1, thrombostatin contaning-3, thrombostatin contaning-6, and wispostatin-1 to reflect their origin. We further demonstrate that these peptides inhibit the proliferation and migration of human umbilical vein endothelial cells in vitro. The anti-proliferative and anti-migratory properties of the identified peptides may be important in maintaining angiogenic homeostasis in vivo and make these peptides suitable candidates for use as anti-angiogenic pharmaceutical agents in numerous therapeutic applications

Karagiannis ED, Popel AS. Biochem. Biophys. Res. Commun. 2007 Jul 20;359(1):63-9. Epub 2007 May 14.

Tumstatin

019-89;019-90;019-91;019-87;019-88;019-85;019-86;019-77;019-78;019-63;019-64;019-61;019-69;019-62;019-72;019-58


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