Nuclear Receptor Regulation of Hepatic Cytochrome P450 Enzymes

Nuclear Receptor Regulation of Hepatic Cytochrome P450 Enzymes... 

Nuclear Receptor Regulation of Hepatic Cytochrome P450 Enzymes. Figure 1 General mechanism for transcriptional activation of CYP genes by xenochemicals that activate their cognate xeno-receptor proteins. In the case of Ah receptor, the receptor s heterodimerization partner is Arnt, whereas in the case of the nuclear receptors CAR, PXR, and PPARa, the heterodimerization partner is RXR. The coactivator and basal transcription factor complexes shown are each comprised of a large number of protein components. 

Figure 4.1 (a) Hormone nuclear receptors involved in the regulation of hepatic cytochrome P450 enzymes, phase II conjugation enzymes, and uptake/efflux transporters. (,b) Integrated regulation of phase I and II enzymes as well as uptake and efflux proteins by nuclear receptors. (Modified from [98].)... 

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