MCUF-651

– MCUF-651 (MCUF651) is a small molecule guanylyl cyclase A receptor (GC-A) positive allosteric modulator (PAM), potentiate ANP-mediated cGMP with EC50 of 0.45 uM (Emax=82%) in HEK293 GC-A cells.MCUF-651 enhanced ANP-mediated cGMP generation in human cardiac, renal, and fat cells and inhibited cardiomyocyte hypertrophy in vitro.MCUF-651 binds to GC-A (Kd=397 nM) and selectively enhances the binding of ANP to GC-A ( MCUF-651+ANP, Kd=0.06 nM).MCUF-651 is orally bioavailable in mice and enhances the ability of endogenous ANP and BNP to generate GC-A-mediated cGMP ex vivo.