Probing cytochrome P450-mediated activation with a truncated azinomycin analogue
MEDCHEMCOMM(2015)
摘要
A deactivated alkene precursor (IC50=81 mu M) to the azinomycin epoxide natural product can be bioactivated by several cytochromes P450 (CYP) to generate antiproliferative metabolites with increased potency (IC50=1-30 mu M) in CHOwt cells. CYP1A1 and 3A4 were shown to generate exclusively the unnatural and the natural-configured azinomycin epoxide diastereoisomer respectively, while CYP1B1 produced both epoxides in a 3:1 mixture. The antiproliferative activity is linked to DNA damage as demonstrated using the comet assay.
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