Nutrient regulation of the islet epigenome controls adaptive insulin secretion
Nutrient regulation of the islet epigenome controls adaptive insulin secretion
Abstract Adaptation of the islet β-cell insulin secretory response to changing insulin demand is critical for blood glucose homeostasis, yet the mechanisms underlying this adaptation are unknown. Here, we show that nutrient-stimulated histone acetylation plays a key role in adapting insulin secretion through regulation of genes involved in β-cell nutrient sensing and metabolism. Nutrient regulation of the epigenome occurs at sites occupied by the chromatin-modifying enzyme Lsd1 in islets. We demonstrate that β-cell-specific deletion of Lsd1 leads to insulin hypersecretion, aberrant expression of nutrient response genes, and histone hyperacetylation. Islets from mice adapted to chronically increased insulin demand exhibited similar epigenetic and transcriptional changes. Moreover, genetic variants associated with fasting glucose and type 2 diabetes are enriched at LSD1-bound sites in human islets, suggesting that interpretation of nutrient signals is genetically determined. Our findings reveal that adaptive insulin secretion involves Lsd1-mediated coupling of nutrient state to regulation of the islet epigenome.
Cross Benjamin R.、Metallo Christian M.、Jhala Ulupi S.、Huising Mark O.、Gaulton Kyle J.、Wortham Matthew、Liu Fenfen、Fleischman Johanna Y.、Harrington Austin R.、Chiou Joshua、Shirihai Orian S.、Vinckier Nicholas K.、Mulas Francesca、Wallace Martina、Sui Yinghui、Sander Maike、Patel Nisha A.
Departments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartment of Bioengineering, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartment of Neurobiology, Physiology and Behavior, College of Biological Sciences, and Physiology and Membrane Biology, School of Medicine, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartment of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartment of Bioengineering, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of CaliforniaDepartments of Pediatrics and Cellular & Molecular Medicine, Pediatric Diabetes Research Center, University of California
基础医学生理学分子生物学
Cross Benjamin R.,Metallo Christian M.,Jhala Ulupi S.,Huising Mark O.,Gaulton Kyle J.,Wortham Matthew,Liu Fenfen,Fleischman Johanna Y.,Harrington Austin R.,Chiou Joshua,Shirihai Orian S.,Vinckier Nicholas K.,Mulas Francesca,Wallace Martina,Sui Yinghui,Sander Maike,Patel Nisha A..Nutrient regulation of the islet epigenome controls adaptive insulin secretion[EB/OL].(2025-03-28)[2025-04-30].https://www.biorxiv.org/content/10.1101/742403.点此复制
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