Synthesis and structure-activity relationship of non-peptidic antagonists of neuropilin-1 receptor
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Updated: Apr 26, 2026

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Wang-Qing Liu1, Valentino Megale2, Lucia Borriello3
1INSERM U648, Laboratory of Molecular and Cellular Pharmacochemistry, Université Paris Descartes, Sorbonne Paris Cité, UFR Biomédicale des Saints Pères, 45 rue des Saints Pères, 75270 Paris cedex 06, France.
Abstract:
Neuropilins (NRPs) are VEGF-A165 co-receptors over-expressed in tumor cells, and considered as targets in angiogenic-related pathologies. We previously identified compound 1, the first non-peptidic antagonist of the VEGF-A165/NRP binding, which exhibits in vivo anti-angiogenic and anti-tumor activities. We report here the synthesis and biological evaluations of new antagonists structurally-related to compound 1. Among these molecules, 4a, 4c and 4d show cytotoxic effects on HUVEC and MDA-MB-31 cells, and antagonize VEGF-A165/NRP-1 binding. This study confirmed our key structure-activity relationships hypothesis and paved the way to compound 1 'hit to lead' optimization.
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