Abstract
Phenobarbital is the classic inducer of cytochrome P450 and drug metabolism. Here we describe the cell signaling mechanism by which phenobarbital binds to antagonize epidermal growth factor receptor to indirectly activate the nuclear constitutive androstane receptor (CAR). In response to this signaling, residue threonine 38 of CAR is dephosphorylated in the cytoplasm. Nonphosphorylated CAR translocates into the nucleus, thereby activating genes that encode enzymes and transporters to induce drug metabolism and excretion.
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Acknowledgments
This research was supported by the Intramural Research Program of National Institute of Environmental Health Sciences (Grants Z01ES1005-01).
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Mutoh, S., Negishi, M. (2014). Epidermal Growth Factor Receptor: The Phenobarbital Receptor that Elicits CAR Activation Signal for P450 Induction. In: Yamazaki, H. (eds) Fifty Years of Cytochrome P450 Research. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54992-5_14
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DOI: https://doi.org/10.1007/978-4-431-54992-5_14
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