期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 18, 页码 7652-7655出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja302469a
关键词
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资金
- NIH [GM056414, HL093282, T32 GM008505, T32 GM008349]
- Wisconsin Stem Cell and Regenerative Medicine Center
Diverse strategies have been explored to mimic the surface displayed by an a-helical segment of a protein, with the goal of creating inhibitors of helix-mediated protein-protein interactions. Many recognition surfaces on proteins, however, are topologically more complex and less regular than a single alpha-helix. We describe efforts to develop peptidic foldamers that bind to the irregular receptor-recognition surface of vascular endothelial growth factor (VEGF). Our approach begins with a 19-residue a-peptide previously reported by Fairbrother et al. (Biochemistry 1998, 37, 17754) to bind to this surface on VEGF. Systematic evaluation of alpha ->beta replacements throughout this 19-mer sequence enabled us to identify homologues that contain up to similar to 30% beta residues, retain significant affinity for VEGF, and display substantial resistance to proteolysis. These alpha/beta-peptides can block VEGF-stimulated proliferation of human umbilical vein endothelial cells.
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