MK-2206 is an orally active, highly potent and selective allosteric Akt inhibitor, with IC₅₀s of 8, 12, and 65 nM for Akt1, Akt2, and Akt3, respectively. Many breast cancer cell lines, and PIK3CA-mutant and cell lines with PTEN loss are sensitive to MK-2206. Anticancer activities^[1][2]. In Vitro: MK-2206 (0-10 μM; 72 and 96 hours) inhibits the nasopharyngeal carcinoma (NPC) cell lines CNE-1, CNE-2, HONE-1, and SUNE-1 proliferation in dose- and time-dependent manner^[3].
MK-2206 (0-10 μM; 24 and 48 hours) results in a dose-dependent increase in the percentage of cells in G0/G1 phase and a concomitant reduction of cell numbers in S phase in CNE-2 and HONE-1 cells^[3].
MK-2206 (0-10 μM; 24 hours) attenuates phosphorylation levels of PRAS40 and S6 in a dose-dependent manner. MK-2206 does not affect phosphorylation of GSKα/β and AKT^[3].
MK-2206 (0-10 μM; 24 hours) increases the appearance of LC3-II in CNE-2 cells dose-dependently. Microtubule-associated protein 1 LC3 is an essential autophagy protein^[3]. In Vivo: Both MK-2206 doses (oral gavage; 480 mg/kg once a week and 240 mg/kg three times a week; for 2 weeks) can inhibit the growth of human CNE-2 xenografts in nude mice. No other obvious toxicity is observed in mice^[3].
MK-2206 (orally; 120 mg/kg; alternate days; for 3 weeks) significantly inhibits tumor growth in 3-5 week old athymic nude mice with GEO colon carcinoma cells^[4].