Jpet # 162222 1 Persistent Induction of Cytochrome P4501a1 in Human Hepatoma Cells by 3-methylcholanthrene: Evidence for Sustained Transcriptional Activation of the Cyp1a1 Promoter
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Persistent induction of cytochrome P4501A1 in human hepatoma cells by 3-methylcholanthrene: evidence for sustained transcriptional activation of the CYP1A1 promoter.
Cytochrome P450 (P450)1A1 plays a critical role in the metabolic activation and detoxification of polycyclic aromatic hydrocarbons (PAHs), many of which are potent human carcinogens. In this investigation, we tested the hypothesis that MC elicits persistent induction of CYP1A1 expression in human hepatoma cells (HepG2) and that this phenomenon is mediated by sustained transcriptional activation...
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The cytochrome P4501A enzymes play important roles in carcinogen metabolism. We reported previously that 3-methylcholanthrene (MC) elicits a persistent induction of hepatic, pulmonary, and mammary microsomal cytochrome P450 (P450) 1A enzymes for several weeks after MC withdrawal. In this study, we tested the hypothesis that CYP1A2, a liver-specific P450 isozyme, plays an important role in the m...
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