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Vitam Horm. 2013;91:243-58. doi: 10.1016/B978-0-12-407766-9.00010-9.

The emerging role of constitutive androstane receptor and its cross talk with liver X receptors and peroxisome proliferator-activated receptor A in lipid metabolism.

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Key Laboratory for Cell Proliferation and Regulation Biology, Ministry of Education, Biomedicine Research Institute and College of Life Sciences, Beijing Normal University, Beijing, China.


The regulation of lipid metabolism is central to energy homeostasis in higher multicellular organisms. Lipid homeostasis depends on factors that are able to transduce metabolic parameters into regulatory events representing the fundamental components of the general control system. Nuclear receptors form a superfamily of ligand-activated transcription factors implicated in various physiological functions including energy metabolism. The constitutive androstane receptor (CAR, NR1I3), initially identified as a xenobiotic-sensing receptor, may also have roles in lipid homeostasis. The nuclear receptors liver X receptors (LXRs, NR1H2/3) and peroxisome proliferator-activated receptors (PPARs, NR1C) have been known for their roles in lipid metabolism. LXR is a sterol sensor that promotes lipogenesis, whereas PPARα controls a variety of genes in several pathways of lipid metabolism. This chapter focuses primarily on the role of CAR in lipid metabolism directly or through its cross talk with LXRs and PPARα.

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