Journal
FEBS LETTERS
Volume 494, Issue 3, Pages 150-156Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0014-5793(01)02314-6
Keywords
vascular endothelial growth factor (vascular; permeability factor); Flt-1(VEGFR-1); angiogenesis; Miles' assay; chick chorioallantoic membrane
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Vascular endothelial growth factor (VEGF) is an angiogenic stimulator which functions through two endothelial specific tyrosine kinase receptors, Flt-1 and Flk-1, In this work, we show that an 11-amino acid peptide derived from the second immunoglobulin-like domain of Flt-1 functions as an angiogenic inhibitor in chick chorioallantoic membrane and inhibited VEGF-induced vascular permeability in Miles' assay without binding to VEGF directly, Circular dichroism and nuclear magnetic resonance analyses indicate that this peptide forms a stable extended structure in solution, presumably beta -sheet structure and is most likely existing as a dimer, Our results suggest that this small peptide functions as an angiogenic inhibitor by inhibiting VEGF function through a non-VEGF binding mechanism, (C) 2001 Federation of European Biochemical Societies, Published by Elsevier Science B,V, All rights reserved.
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