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Asian-Australas J Anim Sci > Volume 24(5); 2011 > Article
Animal Biotechnology
Asian-Australasian Journal of Animal Sciences 2011;24(5): 685-695.
DOI: https://doi.org/10.5713/ajas.2011.10345    Published online April 27, 2011.
Proteomic Analysis of Bovine Longissimus Muscle Satellite Cells during Adipogenic Differentiation
Ramanna Valmiki Rajesh, Mi-Rim Park, Kang-Nyeong Heo, Duhak Yoon, Tae-Hun Kim, Hyun-Jeong Lee
Abstract
Satellite cells are skeletal muscle progenitor/stem cells that reside between the basal lamina and plasma membranes of skeletal fibers in vivo. These cells can give rise to both myogenic and adipogenic cells. Given the possible role for differentiation of satellite cells into adipocytes in marbling and in some pathological disorders like sarcopenia, knowledge of the proteins involved in such process remains obscure. Using two-dimensional polyacrylamide gel electrophoresis coupled with mass spectrometry, we investigated the proteins that are differentially expressed during adipogenic differentiation of satellite cells from bovine longissimus muscle. Our proteome mapping strategy to identify the differentially expressed intracellular proteins during adipogenic differentiation revealed a total of 25 different proteins. The proteins up-regulated during adipogenic differentiation of satellite cells like Cathepsin H precursor, Retinal dehydrogenase 1, Enoyl-CoA hydratase, Ubiquinol-cytochrome-c reductase, T-complex protein 1 subunit beta and ATP synthase D chain were found to be associated with lipid metabolism. The down-regulated proteins like LIM protein, annexin proteins, cofilin-1, Rho GDP-dissociation inhibitor 1 and septin-2, identified in the present study were found to be associated with myogenesis. These results clearly demonstrate that the adipogenic conversion of muscle satellite cells is associated with the up-regulated and down-regulated proteins involved in adipogenesis and myogenesis respectively.
Keywords: 2-DE; Satellite Cells; Adipogenesis; Myogenesis; Proteome


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