JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Colorimetric immunoassays for the screening and specificity evaluation of molecules disturbing VEGFs/VEGFRs interactions.

Angiogenesis and its involved proteins, particularly Vascular Endothelial Growth Factor family (VEGFs) and VEGF receptors (VEGFRs), have been considered as a target of therapeutic interest for numerous inflammatory and vascular diseases. Acting on this biological process through interaction with VEGFs or VEGFRs has received considerable attention. Indeed, VEGFs and VEGFRs are currently targeted by drugs such as monoclonal antibodies. The feasibility of a therapeutic strategy based on blocking the VEGF/VEGFR interaction by using ligands "other-than-biologics" is also explored. To help to the discovery of new molecules, screening assays have been developed, particularly to evaluate the VEGFA/VEGFR1 interaction. Despite the therapeutic importance of VEGFB and PlGF (Placental Growth Factor), no assays have been developed to evaluate molecules against their interactions with VEGFR1. Here, we present new versatile colorimetric immunoassays to screen and evaluate the specific interaction of discovered molecules with different growth factors (VEGFA, VEGFB, PlGF) and receptors (VEGFR1, VEGFR2). These tests, based on competitive immunoassay format, will provide essential information on specificity and selectivity of molecules for their targets and will help to work on the pharmaco-modulation of molecules for targeting one specific interaction.

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