MPT0B206 is a novel tubulin polymerization inhibitor. MPT0B206 induced G2/M cell cycle arrest and the appearance of the mitotic marker MPM-2 in K562 and K562R cells, which is associated with the upregulation of cyclin B1 and the dephosphorylation of Cdc2.
WP-1034 is a novel Jak-Stat inhibitor, which is active against AML blasts. WP-1034 effectively inhibited proliferation of OCIM2 cells and fresh AML samples. WP-1034 caused cell cycle arrest of OCIM2 cells in sub-Go phase. WP-1034 induced apoptosis of OCIM2 cells and that induction of apoptosis involved cleavage of caspase 3 and the DNA repair enzyme poly (adenosine diphosphate [ADP]-ribose) polymerase (PARP).