Acta Veterinaria et Zootechnica Sinica ›› 2021, Vol. 52 ›› Issue (12): 3439-3448.doi: 10.11843/j.issn.0366-6964.2021.012.011

• ANIMAL GENETICS AND BREEDING • Previous Articles     Next Articles

Effect of Overexpression of MyBPC1 on Proliferation and Differentiation of Bovine Skeletal Muscle Satellite Cells

HONG Qianqian1, GUO Hong2, GAO Shuxin1*, GUO Yiwen2*   

  1. 1. College of Animal Science and Technology, Inner Mongolia University for the Nationalities, Tongliao 028000, China;
    2. College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2021-03-25 Online:2021-12-25 Published:2021-12-22

Abstract: The study aimed to explore the effects of myosin binding protein C1 (MyBPC1) on the proliferation and myogenic differentiation of bovine skeletal muscle satellite cells, and provide a basis for further study of the regulatory role of MyBPC1 in cell differentiation and muscle development. The Simmental fetal bovine primary bovine skeletal muscle satellite cells to inducing myogenic differentiation model in vitro was used to simulate the growth and development process of bovine skeletal muscle. qRT-PCR and Western blot were used to detect the cellular temporal expression profile of MyBPC1. There were two groups in this experiment. At the RNA level, there were 4 replicates in each group, and 20 μL in each replicate. However, at the protein level, there were 3 replicates in each group, and 15 μg in each replicate. qRT-PCR and Western blot were used to detect the overexpression effect of MyBPC1 transfected into bovine skeletal muscle sate-llite cells, and to further detect the expression changes of cell proliferation marker factors Pax7, Ki67 and cell differentiation marker factors MyHC, MyOG. The myotube formation status of bovine skeletal muscle satellite cells was observed. The expression level of MyBPC1 was significantly different before and after the differentiation of bovine skeletal muscle satellite cells. After the differentiation of bovine skeletal muscle satellite cells, the mRNA and protein expression of MyBPC1 were significantly higher than those in the proliferation phase (P<0.01). After overexpression of MyBPC1, the number of myotubes formed by cell differentiation was significantly greater than that of the control group. There was no significant difference at the mRNA and protein expression levels of the proliferation marker factor Pax7. The mRNA and protein expression levels of the differentiation marker factor MyHC were significantly higher than that of the control group (P<0.01). Overexpression of MyBPC1 can promote the myogenic differentiation of bovine skele-tal muscle satellite cells in vitro, which lays the foundation for further studying the regulatory mechanism of MyBPC1 on bovine skeletal muscle satellite cells.

Key words: bovine, skeletal muscle satellite cells, overexpression, MyBPC1, proliferation, differentiation

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