ML753286 is an orally active and selective BCRP (Breast cancer resistance protein) inhibitor with an IC50 of 0.6 μM. ML753286 has high permeability and low to medium clearance in rodent and human liver S9 fractions, and is stable in plasma cross species[1].
ML753286 has IC50 values of >30, 0.6, and 39.0 μM for the inhibition of P-gp-, BCRP-, and OATP mediated transport, respectively[1].
ML753286 (25- or 50-mg/kg (PO); 10 or 20 mg/kg (IV); 0.083-24 hours) appears to completely inhibit Bcrp functions in rats at 25 mg/kg PO or at 20 mg/kg IV. The tmax values in plasma were 1.4, 4.0, and 4.1 hours in Bcrp KO rats, WT rats pre-administered 25-mg/kg ML753286, and WT rats pre-administered 50-mg/kg ML753286, respectively[1]. Animal Model: Male Bcrp KO (Abcg2-/-) and WT (Wistar) Rats[1]
[1]. Liao M, et al. Preclinical absorption, distribution, metabolism, excretion and pharmacokinetics of a novelselective inhibitor of breast cancer resistance protein (BCRP). Xenobiotica. 2018 May;48(5):467-477.