Ethanol induction of FGF21 in the liver is dependent on histone acetylation and ligand activation of ChREBP by glycerol-3-phosphate

• 成果类型: Article
• 署名作者: Cheong, Mi Cheong; Mackowiak, Bryan; Kim, Hyung Bum; Hernandez, Genaro; Nandu, Tulip; Vale, Kevin; Zhang, Yuan; Zacharias, Lauren G.; Mathews, Thomas P.; Gao, Bin; Kraus, W. Lee; Kliewer, Steven A.; Mangelsdorf, David J.
• 署名单位: University of Texas System; University of Texas Southwestern Medical Center; National Institutes of Health (NIH) - USA; NIH National Institute on Alcohol Abuse & Alcoholism (NIAAA); University of Texas System; University of Texas Southwestern Medical Center; University of Texas System; University of Texas Southwestern Medical Center; University of Texas System; University of Texas Southwestern Medical Center; University of Texas System; University of Texas Southwestern Medical Center; Howard Hughes Medical Institute
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-12216
• DOI: 10.1073/pnas.2505263122
• 发表日期: 2025-05-29
• 关键词: thermal shift assay; alcohol; metabolism

摘要

Ethanol rapidly stimulates the liver to synthesize the hormone fibroblast growth factor 21 (FGF21), which then acts on the brain to elicit a multifaceted protective response. We show that in mice, this induction of FGF21 occurs at the level of gene transcription and is regulated by two byproducts of ethanol metabolism, glycerol-3-phosphate (G3P) and acetyl-CoA. Using cell-based reporter and thermal shift binding assays, we show that G3P binds to a conserved domain and activates the transcription factor carbohydrate-responsive element-binding protein (ChREBP), which regulates the Fgf21 gene promoter. The stimulation of Fgf21 gene transcription by ethanol also requires its metabolism to acetyl-CoA and correlates with histone acetylation. Accordingly, a p300/ CBP histone acetyltransferase inhibitor blocks histone acetylation, ChREBP recruitment, and transcriptional activation at the Fgf21 promoter. Together, these findings reveal a dual regulatory mechanism driven by both G3P and acetyl-CoA that explains ethanol's robust stimulatory effect on Fgf21 and possibly other ChREBP target genes in the liver.