VAMP2 Marks Quiescent Satellite Cells and Myotubes, but not Activated Myoblasts
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概要
- 論文の詳細を見る
We examined the expression and intracellular localization of vesicle-associated membrane protein 2 (VAMP2) during the differentiation of skeletal muscle cells by immunofluorescence microscopy. In isolated single myofibers, VAMP2 was expressed in quiescent satellite cells, downregulated in proliferating myoblastic cells, and re-expressed with differentiation. In the myoblastic cell line C2C12, VAMP2 was expressed at a low level in the proliferating stage, and then increased after differentiation into myotubes. Based on these results, we propose that VAMP2 can be used as a molecular marker for both quiescent satellite cells and myotubes, but not for proliferating myoblasts. We also found the partial colocalization of VAMP2 with transferrin- or Rab11-labeled vesicles in myotubes, suggesting a role of VAMP2 in the trafficking of recycling endosomes.
著者
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Tajika Yuki
Department of Anatomy, Gunma University Graduate School of Medicine
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Takahashi Maiko
Department of Anatomy, Gunma University Graduate School of Medicine
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Hino Mizuki
Department of Anatomy, Gunma University Graduate School of Medicine
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Murakami Tohru
Department of Anatomy, Gunma University Graduate School of Medicine
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Yorifuji Hiroshi
Department of Anatomy, Gunma University Graduate School of Medicine
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