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AMP-activated Protein Kinase And Myogenesis | 5206
ISSN: 2157-7013

Journal of Cell Science & Therapy
Open Access

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AMP-activated protein kinase and myogenesis

International Conference & Exhibition on Cell Science & Stem Cell Research

Min Du

ScientificTracks Abstracts: J Cell Sci Ther

DOI: 10.4172/2157-7013.S1.02

An accumulating body of evidence points to the crucial role of AMP-activated protein kinase (AMPK) in the regulation of mesenchymal stem cell diff erentiation. Activation of AMPK inhibits adipogenesis and enhances myogenesis. We have demonstrated that muscle growth is correlated with AMPK. Using C3H10T1/2 cells, for the fi rst time, we observed that AMPK phosphorylates b-catenin at Ser 552, which stabilizes b-catenin and enhances its targeted gene expression. In addition, our preliminary data also show that AMPK promotes b-catenin mRNA expression through phosphorylation of histone deacetylase 5 (HDAC5) in mouse C3H10T1/2 cells. HDAC5 belongs to the class IIa HDAC family, and acts as a conserved transcriptional repressor. HDAC5 interacts with myocyte enhancer factor-2 (MEF2) to target specifi c gene promoters. We identifi ed a MEF2 binding site on the b-catenin promoter. Th ese data prompted us to hypothesize that AMPK regulates b-catenin expression through phosphorylation of HDAC5, which was proven in mouse C3H10T1/2 cells. In summary, our recent studies clearly show that AMPK enhances b-catenin signaling, which points to the notion that AMPK regulates MSC diff erentiation via enhancing Wingless in Int (Wnt)/b-catenin signaling.
Min earned his B.S. from Zhejiang University in 1990, M.S. from China Agricultural University in 1993, and Ph.D. in Meat Science and Muscle Biology from Iowa State University in 2001. He was a Canadian NSERC postdoctoral fellow in Biochemistry and Cell Signaling at University of Alberta from 2001 to 2003. After that, he joined Animal Science Department at University of Wyoming as an Assistant Professor and was later promoted to Associate Professor. In 2011, he moved to Washington State University as a Professor and Endowed Chair in Muscle Biology. His research focuses on molecular mechanisms controlling mesenchymal stem cell differentiation into myocytes and adipocytes, and fetal skeletal muscle development.
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