BX-912

BX912 is a selective potent PDK1 inhibitor with an IC50 of 12 nM. BX912 also inhibits other kinases such as ChcK1, PKA, c-kit, and KDR with IC50 of 0.83, 0.11, 0.85, and 0.41 μM, resepectively. BX912 potently prevents PDK1 enzyme activity in a direct kinase assay format, although BX912 fails to block preactivated AKT2 activity (IC50 < 10 μM). BX912 is a competitive inhibitor of PDK1 activity with respect to its substrate, ATP. BX912 promotes a pronounced increase in the population of MDA-468 cells with 4 N DNA content, indicative of a block at the G2/M phase of the cell cycle. BX912 also potently inhibits the growth of HCT-116 cells in soft agar, showing a 96% inhibitory effect at a dose of 1 μM.