Microsomes from UGT-HEK293 cells or commercially available bacculosomes (10 μg) were incubated in the presence of 100 μM of the racemic mixture of (R/S)bicalutamide (R/S, A and B), or of the pure (R) (R, C) or (S) enantiomers (S, D) and UDPGA (1mM) for 2 hours at 37°C. The formation of (R)bicalutamide-glucuronide (R-G, A and C) and (S)bicalutamide-glucuronide (S-G, B and D) was analyzed by LC-MS/MS. Data represent the mean ± S.D. of two independent experiments performed in triplicate.
G: glucuronide.