The effect of myostatin silencing by lentiviral-mediated RNA interference on goat fetal fibroblasts
文献类型: 外文期刊
第一作者: Lu, Jian
作者: Lu, Jian;Wei, Caihong;Zhang, Xiaoning;Xu, Lingyang;Zhang, Shifang;Liu, Jiasen;Cao, Jiaxue;Zhao, Fuping;Zhang, Li;Du, Lixin;Lu, Jian;Lu, Jian;Li, Bichun;Liu, Jiasen;Cao, Jiaxue
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关键词: Myostatin;Lentiviral;RNA interference;Fibroblasts;Myogenesis;Adipogenesis
期刊名称:MOLECULAR BIOLOGY REPORTS ( 影响因子:2.316; 五年影响因子:2.357 )
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收录情况: SCI
摘要: Myostatin is a transforming growth factor-beta family member that acts as a negative regulator of skeletal muscle mass. To identify possible myostatin inhibitors that may promote muscle growth, we used RNA interference mediated by a lentiviral vector to knockdown myostatin in goat fetal fibroblast cells. We also investigated the expression changes in relevant myogenic regulatory factors (MRFs) and adipogenic regulatory factors in the absence of myostatin in goat fetal fibrolasts. Quantitative RT-PCR revealed that myostatin transcripts were significantly reduced by 75 % (P < 0.01). Western blot showed that myostatin protein expression was reduced by 95 % (P < 0.01). We also found that the mRNA expression of activin receptor IIB (ACVR2B) significantly increased by 350 % (P < 0.01), and p21 increased 172 % (P < 0.01). Furthermore, myostatin inhibition decreased Myf5 and increased MEF2C mRNA expression in goat fetal fibroblasts, suggesting that myostatin regulates MRFs differently in fibroblasts compared to muscle. In addition, the expression of adipocyte marker genes peroxisome proliferator-activated receptor (PPAR) gamma and leptin, but not CCAAT/enhance-binding protein (C/EBP) alpha and C/EBP beta, were upregulated at the transcript level after myostatin silencing. These results suggest that we have generated a novel way to block myostatin in vitro, which could be used to improve livestock meat production and gene therapy of musculoskeletal diseases. This also suggests that myostatin plays a negative role in regulating the expression of adipogenesis related genes in goat fetal fibroblasts.
分类号: Q7
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