INY-03-041 is a potent, highly selective and PROTAC-based pan-AKT degrader consisting of the ATP-competitive AKT inhibitor GDC-0068 conjugated to Lenalidomide (Cereblon ligand). INY-03-041 inhibits AKT1, AKT2 and AKT3 with IC50s of 2.0 nM, 6.8 nM and 3.5 nM, respectively[1].
INY-03-041 (10-1000 nM; 2-24 hours; MDA-MB-468 cells) treatment induces potent degradation of all three AKT isoforms in a dose-dependent manner after a 12-h treatment, with maximal degradation observed between 100 and 250 nM. At concentrations of 500 nM and greater, AKT degradation is diminished. Treatment with 250 nM of INY-03-041 over time reveals partial degradation of all AKT isoforms within 4 h and progressive loss of AKT abundance out to 24 h[1].INY-03-041 exhibits potent in vitro inhibition of S6K1 (IC50 =37.3 nM) and PKG1 (IC50 = 33.2 nM)[1].INY-03-041 displays enhanced anti-proliferative effects compared with GDC-0068 in MDA-MB-468 and HCC1937 cells[1].
[1]. You I, et al. Discovery of an AKT Degrader with Prolonged Inhibition of Downstream Signaling. Cell Chem Biol. 2020 Jan 16;27(1):66-73.e7.