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  • 1
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    PRDM16 controls a brown fat/skeletal muscle switch (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-08-23
    Description: 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-gamma (peroxisome-proliferator-activated receptor-gamma) 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.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2583329/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2583329/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seale, Patrick -- Bjork, Bryan -- Yang, Wenli -- Kajimura, Shingo -- Chin, Sherry -- Kuang, Shihuan -- Scime, Anthony -- Devarakonda, Srikripa -- Conroe, Heather M -- Erdjument-Bromage, Hediye -- Tempst, Paul -- Rudnicki, Michael A -- Beier, David R -- Spiegelman, Bruce M -- R01 AR044031/AR/NIAMS NIH HHS/ -- R01 AR044031-11/AR/NIAMS NIH HHS/ -- R37 DK031405/DK/NIDDK NIH HHS/ -- R37 DK031405-27/DK/NIDDK NIH HHS/ -- England -- Nature. 2008 Aug 21;454(7207):961-7. doi: 10.1038/nature07182.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute and the Department of Cell Biology, Harvard Medical School, 1 Jimmy Fund Way, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18719582" target="_blank"〉PubMed〈/a〉
    Keywords: Adipocytes, Brown/cytology/*metabolism ; Adipocytes, White/metabolism ; Adipose Tissue, Brown/cytology ; Animals ; COS Cells ; *Cell Differentiation/genetics ; Cell Line ; Cercopithecus aethiops ; DNA-Binding Proteins/genetics/*metabolism ; *Gene Expression Regulation, Developmental ; Male ; Mice ; Muscle Development/genetics ; Muscle, Skeletal/cytology/growth & development/*metabolism ; Myogenic Regulatory Factor 5/genetics ; PPAR gamma/genetics ; Transcription Factors/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    TAZ, a transcriptional modulator of mesenchymal stem cell differentiation (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-16
    Description: Mesenchymal stem cells (MSCs) are a pluripotent cell type that can differentiate into several distinct lineages. Two key transcription factors, Runx2 and peroxisome proliferator-activated receptor gamma (PPARgamma), drive MSCs to differentiate into either osteoblasts or adipocytes, respectively. How these two transcription factors are regulated in order to specify these alternate cell fates remains a pivotal question. Here we report that a 14-3-3-binding protein, TAZ (transcriptional coactivator with PDZ-binding motif), coactivates Runx2-dependent gene transcription while repressing PPARgamma-dependent gene transcription. By modulating TAZ expression in model cell lines, mouse embryonic fibroblasts, and primary MSCs in culture and in zebrafish in vivo, we observed alterations in osteogenic versus adipogenic potential. These results indicate that TAZ functions as a molecular rheostat that modulates MSC differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hong, Jeong-Ho -- Hwang, Eun Sook -- McManus, Michael T -- Amsterdam, Adam -- Tian, Yu -- Kalmukova, Ralitsa -- Mueller, Elisabetta -- Benjamin, Thomas -- Spiegelman, Bruce M -- Sharp, Phillip A -- Hopkins, Nancy -- Yaffe, Michael B -- CA042063/CA/NCI NIH HHS/ -- GM60594/GM/NIGMS NIH HHS/ -- GM68762/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2005 Aug 12;309(5737):1074-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cancer Research, Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, E18-580, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16099986" target="_blank"〉PubMed〈/a〉
    Keywords: Adipocytes/*cytology ; Animals ; Bone Morphogenetic Protein 2 ; Bone Morphogenetic Proteins/pharmacology ; Cell Differentiation ; Cell Line ; Core Binding Factor Alpha 1 Subunit ; Gene Expression Regulation, Developmental ; Humans ; Mesenchymal Stromal Cells/*cytology/physiology ; Mice ; Neoplasm Proteins/metabolism ; Oligonucleotides, Antisense ; Osteoblasts/*cytology ; Osteocalcin/genetics ; Osteogenesis ; PPAR gamma/metabolism ; Promoter Regions, Genetic ; Protein Structure, Tertiary ; Proteins/chemistry/genetics/*physiology ; RNA, Small Interfering ; Transcription Factors/chemistry/genetics/metabolism/*physiology ; Transcriptional Activation ; Transfection ; Transforming Growth Factor beta/pharmacology ; Zebrafish ; Zebrafish Proteins/genetics/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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