Coller Lab

Rockefeller University

BIOLOGY

New York · United States

NIH-funded
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NIH R01 · 2024

Platelet Integrin AlphaIIbBeta3 Structure, Activation, and Ligand Binding: Fibrinogen, Fibrin, D-dimer, and von Willebrand Factor

Project Summary/Abstract Platelets play a key role in both hemostasis and thrombosis and contribute to COVID-19 pathology. Platelet αIIbβ3 is the paradigmatic integrin receptor and a validated drug target, with abciximab, developed under this grant, the first FDA-approved αIIbβ3 antagonist. In the current grant period, we rationally designed and synthesized novel αIIbβ3 and αVβ3 antagonists that lock the receptor in the inactive conformation, which may confer therapeutic benefits. The αIIbβ3 antagonist (RUC-4; zalunfiban) is now in Phase 2 human studies for pre- hospital therapy of heart attacks and the αVβ3 antagonists are being developed for pre-clinical testing. We also began studying…

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