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The expression of Phase II drug-metabolizing enzymes in human B-lymphoblastoid TK6 cells.

Xilin LiYuxi LiKylie G NingSi ChenLei GuoJessica A BonzoNan Mei
Published in: Journal of environmental science and health. Part C, Toxicology and carcinogenesis (2022)
In vitro genotoxicity testing plays an important role in chemical risk assessment. The human B-lymphoblastoid cell line TK6 is widely used as a standard cell line for regulatory safety evaluations. Like many other mammalian cell lines, TK6 cells have limited metabolic capacity; therefore, usually require a source of exogenous metabolic activation for use in genotoxicity testing. Previously, we developed a set of TK6-derived cell lines that individually express one of fourteen cytochrome P450s (CYPs). In the present study, we surveyed a panel of major Phase II drug-metabolizing enzymes to characterize their baseline expression in TK6 cells. These results may serve as a reference enzymatic profile of this commonly used cell line.
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