APJ receptor agonist 1, a potent biphenyl acid derivative, acts as an agonist (EC50 of 0.093 nM and 0.12 nM for human and rat APJ receptors, respectively) for the APJ receptor (APJ-R). It exhibits significant in vitro potency towards apelin-13, the endogenous peptidic ligand for the APJ receptor. APJ receptor agonist 1 holds promise for heart failure research.
Potent apelin receptor antagonist (Ki = 82 nM; IC50 = 93 nM). Antagonizes the inhibitory affect of [Pyr1]-Apelin-13 on forskolin-induced cAMP accumulation in CHO-K1-APJ cells. Recuces tumor expansion and lengthens survival time in a mouse xenograft model