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Cheng Ye, Duo Zhang, Lei Zhao, Yan Li, Xiaohan Yao, Hui Wang, Shengjie Zhang, Wei Liu, Hongchao Cao, Shuxian Yu, Yucheng Wang, Jingjing Jiang, Hui Wang, Xihua Li, Hao Ying
Skeletal muscle has a major role in locomotion and muscle disorders are associated with poor regenerative efficiency. Therefore, a deeper understanding of muscle regeneration is needed to provide a new insight for new therapies. CaMKK2 plays a role in the calcium/calmodulin-dependent kinase cascade; however, its role in skeletal muscle remains unknown. Here, we found that CaMKK2 expression levels were altered under physiological and pathological conditions including postnatal myogensis, freeze or cardiotoxin-induced muscle regeneration, and Duchenne muscular dystrophy...
October 24, 2016: International Journal of Molecular Sciences
Hai-Yan Huang, Wen-Ting Zhang, Wen-Yan Jiang, Su-Zhen Chen, Yang Liu, Xin Ge, Xi Li, Yong-Jun Dang, Bo Wen, Xiao-Hui Liu, Hao-Jie Lu, Qi-Qun Tang
The integration of signals involved in deciding the fate of mesenchymal stem cells is largely unknown. We used proteomics profiling to identify RhoGDIβ, an inhibitor of the small G-protein Rho family, as a component that regulates commitment of C3H10T1/2 mesenchymal stem cells to the adipocyte or smooth muscle cell lineage in response to bone morphogenetic protein 4 (BMP4). RhoGDIβ is notably down-regulated during BMP4-induced adipocytic lineage commitment of C3H10T1/2 mesenchymal stem cells, and this involves the cytoskeleton-associated protein lysyl oxidase...
April 24, 2015: Journal of Biological Chemistry
Kwok-Kuen Cheung, Simon S Yeung, Shannon W Au, Levina S Lam, Zhong-Quan Dai, Ying-Hui Li, Ella W Yeung
INTRODUCTION: TRPC1 and TRPC3 proteins are widely expressed in skeletal muscles in forming calcium-permeable channels. Herein we characterize the expression pattern of TRPC transcripts during skeletal myogenesis in C2C12 myoblasts. METHODS: We used polymerase chain reaction and Western blotting to detect expression levels, immunohistochemistry for subcellular localization, and co-immunoprecipitation techniques to assess interaction. RESULTS: TRPC1 localizes to the cytoplasm and is enriched in the perinuclear region in undifferentiated myoblasts...
September 2011: Muscle & Nerve
David Horst, Svetlana Ustanina, Consolato Sergi, Gregor Mikuz, Herbert Juergens, Thomas Braun, Eugene Vorobyov
Pax3 and Pax7 are closely related transcription factors involved in the commitment of myogenic precursors in the developing trunk. However, it is not yet clear whether these genes are required for myogenic cell specification in the head and for post-somitic myogensis per se. In part, this uncertainty is due to the scarce information about their normal time course and pattern of expression. Here, we present a systematic immunohistochemical in situ analysis of spatiotemporal characteristics of Pax3 and Pax7 protein expression in comparison to that of MyoD and myogenin in the developing trunk and head muscles...
2006: International Journal of Developmental Biology
Hyung Wook Nam, Richard Simpson, Yu Sam Kim
N-Terminal isotope tagging (NIT) is an important proteomic tool for quantifying proteins in complex mixtures. Here we describe a modified version of the isotope-coded propionylation procedure of Zhang et al. [Zhang et al., Rapid Commun. Mass Spectom. 16 (2002) 2325], which uses 'light' D0 and 'heavy' D10-propionic anhydride. The method has been extensively modified to improve both the kinetics and overall yield of propionylation. Using albumin as a model protein, the overall variation in quantification yields, calculated using several tryptic peptides, was within +/-10% (S...
November 5, 2005: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
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