Extending foldamer design beyond α-helix mimicry: α/β-peptide inhibitors of vascular endothelial growth factor signaling.

Extending foldamer design beyond α-helix mimicry: α/β-peptide inhibitors of vascular endothelial growth factor signaling.
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DOI:
10.1021/ja302469a
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发表时间:
2012-05-09
影响因子:
15
通讯作者:
Gellman, Samuel H.
Gellman, Samuel H.
中科院分区:
化学1区
文献类型:
--
作者:
Haase, Holly S.;Peterson-Kaufman, Kimberly J.;Levengood, Sheeny K. Lan;Checco, James W.;Murphy, William L.;Gellman, Samuel H.

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Diverse strategies have been explored to mimic the surface displayed by an α-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 α-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 α-peptide previously reported by Fairbrother et al. (Biochemistry 1998, 37, 17754) to bind to this surface on VEGF. Systematic evaluation of α → β replacements throughout this 19-mer sequence enabled us to identify homologues that contain up to ~30% β residues, retain significant affinity for VEGF, and display substantial resistance to proteolysis. These α/β-peptides can block VEGF-stimulated proliferation of human umbilical vein endothelial cells.
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