XL413 (BMS-863233) is a potent and selective cell division cycle 7 homolog (CDC7) kinase inhibitor with IC50 of 3.4 nM, showing 63-, 12- and 35-fold selectivity over CK2, Pim-1 and pMCM2, respectively. Phase 1/2.
In MDA-MB-231T and Colo-205 cell lines, XL413 results in inhibition of CDC7 specific phosphorylation of MCM2. XL413 also inhibits the cell proliferation, decreases cell viability and elicits the caspase 3/7 activity in Colo-205 cells. Moreover, XL413 results in modified S phase progression that subsequently leads to apoptotic cell death. [1]
In a Colo-205 xenograft model, XL413, at the 3 mg/kg dose, causes 70% inhibition of phosphorylated MCM2, and causes significant tumor growth regression at the 100 mg/kg dose. [1]
[1] Koltun ES, et al. Bioorg Med Chem Lett. 2012, 22(11), 3727-3731.