Cited by 1,487Cholesterol and Lipid MetabolismDrug Transport and Resistance MechanismsLipid metabolism and disorders

Molecular Basis for Feedback Regulation of Bile Acid Synthesis by Nuclear Receptors

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Lu, Timothy T., Makishima, Makoto, Repa, Joyce J., Schoonjans, Kristina, Kerr, Thomas A., Auwerx, Johan, Mangelsdorf, David J.·2000·Molecular Cell

Abstract

The catabolism of cholesterol into bile acids is regulated by oxysterols and bile acids, which induce or repress transcription of the pathway's rate-limiting enzyme cholesterol 7alpha-hydroxylase (CYP7A1). The nuclear receptor LXRalpha binds oxysterols and mediates feed-forward induction. Here, we show that repression is coordinately regulated by a triumvirate of nuclear receptors, including the bile acid receptor, FXR; the promoter-specific activator, LRH-1; and the promoter-specific repressor, SHP. Feedback repression of CYP7A1 is accomplished by the binding of bile acids to FXR, which leads to transcription of SHP. Elevated SHP protein then inactivates LRH-1 by forming a heterodimeric complex that leads to promoter-specific repression of both CYP7A1 and SHP. These results reveal an elaborate autoregulatory cascade mediated by nuclear receptors for the maintenance of hepatic cholesterol catabolism.

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Crossref · 10.1016/s1097-2765(00)00050-2

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Authors
Lu, T. T., Makishima, M., Repa, J. J., Schoonjans, K., Kerr, T. A., Auwerx, J., & Mangelsdorf, D. J.
Affiliations
  • The University of Texas Southwestern Medical Center (US)
  • Howard Hughes Medical Institute (US)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Mangelsdorf, David J.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2000-09
Volume
6
Issue
3
Pages
507-515
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2068458442
Cited by
1,487
References
37
Citations by year
2026: 36 · 2025: 32 · 2024: 39 · 2023: 47 · 2022: 35 · 2021: 51 · 2020: 43 · 2019: 48 · 2018: 56 · 2017: 47 · 2016: 44 · 2015: 52 · 2014: 47 · 2013: 52 · 2012: 64
FWCI
73.34
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Topics
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
bile acid synthesis, feedback regulation, nuclear receptors, farnesoid X receptor, liver X receptor alpha, LRH-1, SHP, CYP7A1, oxysterols, bile acids, transcriptional repression, heterodimeric complex
MeSH terms
Liver X Receptors, Receptor, Farnesoid X-Activated, Animals, Bile Acids and Salts, Cells, Cultured, Cholesterol, Cholesterol 7-alpha-Hydroxylase, DNA-Binding Proteins, Feedback, Homeostasis, Humans, Kidney, Promoter Regions, Genetic, Repressor Proteins, Transcription Factors, Transcription, Genetic, Gene Expression Regulation, Enzymologic, Receptors, Cytoplasmic and Nuclear, Mice, Orphan Nuclear Receptors

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