Protective efficacy of hGSTM1-1 against B[a]P and (+)- or (-)-B[a]P-7,8-dihydrodiol cytotoxicity, mutagenicity, and macromolecular adducts in V79 cells coexpressing hCYP1A1.

Abstract excerpt

Transgenic cell lines were constructed to study the dynamics of competition between activation versus detoxification of benzo[a]pyrene (B[a]P) or B[a]P-7,8-dihydrodiol metabolites. Stably transfected V79MZ cells expressing human cytochrome P4501A1 (hCYP1A1) alone or in combination with human glutathione-S-transferase M1 (hGSTM1) were used to determine how effectively this GST isozyme protects against cytotoxic,...

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