PRDM16 controls a brown fat/skeletal muscle switch

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ID: 265822
1970
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Résumé
Brown fat can increase energy expenditure and protect against obesity through a specialized program of uncoupled respiration. Here we show by in vivo fate mapping that brown, but not white, fat cells arise from precursors that express Myf5, a gene previously thought to be expressed only in the myogenic lineage. We also demonstrate that the transcriptional regulator PRDM16 (PRD1-BF1-RIZ1 homologous domain containing 16) controls a bidirectional cell fate switch between skeletal myoblasts and brown fat cells. Loss of PRDM16 from brown fat precursors causes a loss of brown fat characteristics and promotes muscle differentiation. Conversely, ectopic expression of PRDM16 in myoblasts induces their differentiation into brown fat cells. PRDM16 stimulates brown adipogenesis by binding to PPAR-γ (peroxisome-proliferator-activated receptor-γ) and activating its transcriptional function. Finally, Prdm16-deficient brown fat displays an abnormal morphology, reduced thermogenic gene expression and elevated expression of muscle-specific genes. Taken together, these data indicate that PRDM16 specifies the brown fat lineage from a progenitor that expresses myoblast markers and is not involved in white adipogenesis.
Clé de Référence
seale1970natureprdm16 Utilisez cette clé pour citer automatiquement dans le manuscrit lors de l'utilisation de SciMatic Manuscript Manager ou Thesis Manager
Auteurs Patrick Seale;Bryan Bjork;Wenli Yang;Shingo Kajimura;Sherry Chin;Shihuan Kuang;Anthony Scimè;Srikripa Devarakonda;Heather M. Conroe;Hediye Erdjument-Bromage;Paul Tempst;Michael A. Rudnicki;David R. Beier;Bruce M. Spiegelman;Patrick Seale;Bryan Bjork;Wenli Yang;Shingo Kajimura;Sherry Chin;Shihuan Kuang;Anthony Scimè;Srikripa Devarakonda;Heather M. Conroe;Hediye Erdjument-Bromage;Paul Tempst;Michael A. Rudnicki;David R. Beier;Bruce M. Spiegelman;
Revue Nature
Année 1970
DOI
doi:10.1038/nature07182
URL
http://dx.doi.org/10.1038/nature07182
Mots-clés
Science humanities and social sciences multidisciplinary National Center for Biotechnology Information NCBI NLM MEDLINE Mice gene expression regulation animals pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't male N.I.H. Extramural cell line DNA-Binding Proteins / metabolism* Transcription Factors / metabolism* adipose tissue white / metabolism developmental* chlorocebus aethiops skeletal / cytology dna-binding proteins / genetics transcription factors / genetics ppar gamma / genetics muscle bruce m spiegelman skeletal / metabolism* cos cells pmid:18719582 pmc2583329 doi:10.1038/nature07182 patrick seale bryan bjork adipocytes brown / cytology brown / metabolism* cell differentiation* / genetics muscle development / genetics skeletal / growth & development myogenic regulatory factor 5 / genetics

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