TM-1 is a potent inhibitor of pyruvate dehydrogenase kinase (PDHK1). TM-1 inhibits PDHK1 and PDHK2 with IC50s of 2.97 μM and 5.2 μM, respectively. TM-1 blocks pyruvate dehydrogenase complex (PDHC) phosphorylation, and inhibits cell proliferation[1].
TM-1 (0-10 μM) inhibits PDHK1 activity with the inhibition rate of 80.5% (dosage at 10 μM) and an IC50 value of 2.97 μM[1].TM-1 (0-2.1 μM; 12 h) shows anti-osteosarcoma activity and inhibits MG-63 cells with an EC50 value of 14.5 μM[1].TM-1 (3, 6, 12 μM; 24 h) decreases PDHC phosphorylation of both Ser293 and Ser232 sites in a dose-dependent manner[1].
[1]. Fang A, et al. Identification of pyruvate dehydrogenase kinase 1 inhibitors with anti-osteosarcoma activity. Bioorg Med Chem Lett. 2017 Dec 15;27(24):5450-5453.