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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Regulation of CYP1A2 by histone deacetylase inhibitors in mouse hepatocytes.

Cytochrome P450 1A2 (CYP1A2) is constitutively expressed in the mouse liver, but the constitutive expression progressively declines to an undetectable level in isolated hepatocytes. In this study, CYP1A2 was induced in hepatocytes exposed to the histone deacetylase inhibitors trichostatin A (TSA) and sodium butyrate (SB), but only well after constitutive CYP1A2 expression was silenced. However, cotreatment with the arylhydrocarbon receptor (AhR) ligand 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and either TSA or SB reduced the induction of CYP1A2 with the same time course as TSA or SB increased its induction. These results suggest that histone modification is involved in CYP1A2 regulation in hepatocytes through pathways that are independent of AhR.[1]


  1. Regulation of CYP1A2 by histone deacetylase inhibitors in mouse hepatocytes. Jin, B., Ryu, D.Y. J. Biochem. Mol. Toxicol. (2004) [Pubmed]
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