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Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
10:51

Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists

Published on: November 15, 2013

[Advances in the research of pregnane X receptor and constitutive androstane receptor]

Bing-fang Hu1, Hui-chang Bi, Min Huang

  • 1Laboratory of Drug Metabolism and Pharmacokinetics, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.

Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|January 17, 2012
PubMed

Insights

Nuclear receptors pregnane X receptor (PXR) and constitutive androstane receptor (CAR) regulate drug metabolism and hepatic energy. Their roles in lipogenesis and down-regulating gluconeogenesis, fatty acid oxidation, and ketogenesis have implications for drug interactions and disease treatments.

Area of Science:

  • Endocrinology
  • Molecular Biology
  • Pharmacology

Background:

  • Nuclear receptors pregnane X receptor (PXR) and constitutive androstane receptor (CAR) are known transcription factors.
  • Recent research highlights their roles beyond basic gene regulation.

Purpose of the Study:

  • To elucidate the roles of PXR and CAR in regulating hepatic energy metabolism.
  • To understand the implications of PXR and CAR in drug metabolism and drug-drug interactions.

Main Methods:

  • Analysis of gene expression related to drug metabolism and energy pathways.
  • Investigating the regulatory functions of PXR and CAR in cellular models.

Main Results:

  • PXR and CAR modulate genes encoding drug metabolism enzymes.
  • These receptors influence hepatic energy metabolism by down-regulating gluconeogenesis, fatty acid oxidation, and ketogenesis.
  • They also up-regulate lipogenesis.

Conclusions:

  • PXR and CAR are key regulators of hepatic energy homeostasis.
  • Understanding PXR and CAR functions is crucial for predicting drug-drug interactions.
  • These receptors represent potential therapeutic targets for metabolic diseases.

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