Cited by 332Sirtuins and Resveratrol in MedicineCholesterol and Lipid MetabolismDrug Transport and Resistance Mechanisms

FXR Acetylation Is Normally Dynamically Regulated by p300 and SIRT1 but Constitutively Elevated in Metabolic Disease States

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Kemper, Jongsook Kim, Xiao, Zhen, Ponugoti, Bhaskar, Miao, Ji, Fang, Sungsoon, Kanamaluru, Deepthi, Tsang, Stephanie, Wu, Shwu-Yuan +2 more·2009·Cell Metabolism

Abstract

The nuclear bile acid receptor FXR is critical for regulation of lipid and glucose metabolism. Here, we report that FXR is a target of SIRT1, a deacetylase that mediates nutritional and hormonal modulation of hepatic metabolism. Lysine 217 of FXR is the major acetylation site targeted by p300 and SIRT1. Acetylation of FXR increases its stability but inhibits heterodimerization with RXRalpha, DNA binding, and transactivation activity. Downregulation of hepatic SIRT1 increased FXR acetylation with deleterious metabolic outcomes. Surprisingly, in mouse models of metabolic disease, FXR interaction with SIRT1 and p300 was dramatically altered, FXR acetylation levels were elevated, and overexpression of SIRT1 or resveratrol treatment reduced acetylated FXR levels. Our data demonstrate that FXR acetylation is normally dynamically regulated by p300 and SIRT1 but is constitutively elevated in metabolic disease states. Small molecules that inhibit FXR acetylation by targeting SIRT1 or p300 may be promising therapeutic agents for metabolic disorders.

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Crossref · 10.1016/j.cmet.2009.09.009

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Authors
Kemper, J. K., Xiao, Z., Ponugoti, B., Miao, J., Fang, S., Kanamaluru, D., Tsang, S., Wu, S.-Y., Chiang, C.-M., & Veenstra, T. D.
Affiliations
  • University of Illinois Urbana-Champaign (US)
  • Frederick National Laboratory for Cancer Research (US)
  • Harold C. Simmons Comprehensive Cancer Center (US)
Corresponding author
Kemper, Jongsook Kim
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2009-11
Volume
10
Issue
5
Pages
392-404
ISSN
1550-4131 (ISSN-L)
OpenAlex
W1983620925
Cited by
332
References
39
Citations by year
2026: 12 · 2025: 16 · 2024: 10 · 2023: 15 · 2022: 17 · 2021: 16 · 2020: 22 · 2019: 20 · 2018: 23 · 2017: 22 · 2016: 15 · 2015: 18 · 2014: 29 · 2013: 29 · 2012: 30
FWCI
16.12
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DigitalCommons-Cedarville (Cedarville University) (submittedVersion)
Funders
  • National Institutes of Health (n01co12400-79-0-22)
  • National Cancer Institute (N01CO12400, N01-CO-012400, CA103867, R01CA103867, R01CA124760, CA124760)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK062777, R01DK080032, DK062777, R56DK062777, DK80032)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
Keywords
farnesoid X receptor, protein acetylation, P300, SIRT1, receptor stability, DNA binding, transcriptional activation, hepatic metabolism, metabolic disorders, resveratrol, small molecule drugs
MeSH terms
Resveratrol, Receptor, Farnesoid X-Activated, p300-CBP-Associated Factor, Acetylation, Animals, Disease Models, Animal, Histone Deacetylases, Liver, Liver Diseases, Male, Stilbenes, Transcription Factors, Transcriptional Activation, Down-Regulation, Mutagenesis, Site-Directed, Receptors, Cytoplasmic and Nuclear, Dimerization, RNA, Small Interfering, Retinoid X Receptor alpha, p300-CBP Transcription Factors, Mice, Protein Stability, Sirtuin 1, Hep G2 Cells

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