期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES
卷 13, 期 4, 页码 413-425出版社
IVYSPRING INT PUBL
DOI: 10.7150/ijbs.17508
关键词
MiR-696; CNTFR alpha; myoblast proliferation and differentiation
资金
- Natural Science Foundation of Jiangsu Province [BK20140688]
- Agricultural Science and Technology independent Innovation Foundation of Jiangsu Province [CX (15) 1006]
- Youth Science and Technology Innovation Fund of Nanjing Agricultural College in China [KYCYL201502-3]
- foundations from science and technology support program of Jiangsu Province [BE2014396]
Micro-696 (miR-696) has been previously known as an exercise related miRNA, which has a profound role in fatty acid oxidation and mitochondrial biogenesis of skeletal muscle. However, its role in skeletal myoblast proliferation and differentiation is still unclear. In this study, we found that miR-696 expressed highly in skeletal muscle and reduced during C2C12 myoblasts differentiation. MiR-696 overexpression repressed C2C12 myoblast proliferation and myofiber formation, while knockdown of endogenous miR-696 expression showed opposite results. During myogenesis, we observed an inversed expression pattern between miR-696 and CNTFR alpha in vitro, and demonstrated that miR-696 could specifically target CNTFR alpha and repress the expression of CNTFR alpha. Additionally, we further found that knockdown of CNTFR alpha suppressed the proliferation and differentiation of C2C12 cells. Taking all things together, we propose a novel insight that miR-696 down-regulates C2C12 cell myogenesis by inhibiting CNTFR alpha expression.
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