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Biochemistry. 1998 Dec 22;37(51):17754-64.

Novel peptides selected to bind vascular endothelial growth factor target the receptor-binding site.

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  • 1Department of Protein Engineering, Genentech, Inc., South San Francisco, California 94080, USA.

Abstract

Peptides that inhibit binding of vascular endothelial growth factor (VEGF) to its receptors, KDR and Flt-1, have been produced using phage display. Libraries of short disulfide-constrained peptides yielded three distinct classes of peptides that bind to the receptor-binding domain of VEGF with micromolar affinities. The highest affinity peptide was also shown to antagonize VEGF-induced proliferation of primary human umbilical vascular endothelial cells. The peptides bind to a region of VEGF known to contain the contact surface for Flt-1 and the functional determinants for KDR binding. This suggests that the receptor-binding region of VEGF is a binding "hot spot" that is readily targeted by selected peptides and supports earlier assertions that phage-derived peptides frequently target protein-protein interaction sites. Such peptides may lead to the development of pharmacologically useful VEGF antagonists.

PMID:
9922141
[PubMed - indexed for MEDLINE]
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