BAY-1143572|cas 1414943-88-6

BAY-1143572|cas 1414943-88-6

DC Chemicals, Website: www.dcchemicals.com

Product Name: BAY-1143572|Cas Number: 1414943-88-6| Catalog Number: DC10376|Other Nmaes: BAY1143572; BAY 114357

BAY 1143572 is a highly selective, potent and orally available inhibitor of PTEFb/CDK9; inhibits the proliferation of AML cell lines with a median IC50 of 385 nM.

BAY 1143572 inhibits the proliferation of 7 MLL-rearrangements positive and negative AML cell lines with a median IC50 of 385 nM (range 230-1100 nM) and induces apoptosis[1]. BAY 1143572 has potent and highly selective PTEFb-kinase inhibitory activity in the low nanomolar range against PTEFb/CDK9 and an at least 50-fold selectivity against other CDKs. BAY 1143572 shows a favorable selectivity against a panel of non-CDK kinases. It shows broad antiproliferative activity against a panel of tumor cell lines with sub-micromolar IC50 values. The concentration-dependent inhibition of the phosphorylation of the RNA polymerase II and downstream reduction of MYC mRNA and protein levels is observed[2].BAY 1143572 exhibits single agent efficacy at tolerated doses in 4 out of 5 AML xenograft tumor models in mice and in 2 out of 2 AML xenograft tumor models in rats upon once daily oral administration. Partial or even complete remissions could be achieved in several models[1].The inhibition of MYC mRNA is also observed in blood cells of BAY 1143572-treated rats indicating the potential clinical utility of MYC in blood cells as a pharmacodynamic marker in clinical development. The in vivo efficacy of BAY 1143572 is significantly enhanced in combination with several chemotherapeutics in different solid tumor models[2].