Biological Activity |
BRD0705 is a potent, paralog selective and orally active GSK3alpha inhibitor with an IC50 of 66 nM and a Kd of 4.8 uM. BRD0705 displays increased selectivity for GSK3alpha (8-fold) versus GSK3beta (IC50 of 515 nM). BRD0705 can be used for acute myeloid leukemia (AML) research[1]. In Vitro: BRD0705 displays excellent selectivity in a penal of 311 kinases, the CDK family of kinases (CDK2, 3 and 5) are next most potently inhibits at values of 6.87 uM, 9.74 uM and 9.20 uM (87-fold, 123-fold and 116-fold selectivity relative to GSK3alpha)[1]. BRD0705 (10-40 uM; 2-24 hours; U937 cells) treatment impairs GSK3alpha Tyr279 phosphorylation in a time-and concentration-dependent manner without affecting GSK3beta Tyr216 phosphorylation[1]. Using a beta-catenin dependent TCF/LEF luciferase reporter assay, the absence of beta-catenin induced target activation after treatment with BRD0705 in AML cell lines[1]. BRD0705 impairs AML colony formation in all six tested cell lines, MOLM13, TF-1, U937, MV4-11, HL-60 and NB4, in a concentration-dependent manner, as opposed to BRD3731 which impairs colony formation in TF-1 while increasing colony forming ability in the MV4-11 cell line[1]. In Vivo: BRD0705 (30 mg/kg; oral gavage; twice daily; NSG mice) treatment impairs leukemia initiation and prolongs survival in AML mouse models[1]. |