China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (4): 1204-1210.doi: 10.16431/j.cnki.1671-7236.2021.04.007

• Physiology and Biochemistry • Previous Articles     Next Articles

Isolation,Culture,Identification and Myogenic Differentiation of Sheep Skeletal Muscle Satellite Cells

LI Xin1, YU Yongsheng1, ZHANG Lichun1, MA Huihai2, LUO Xiaotong3, WEI Tian2, XIAO Cheng1, ZHANG Qi1, CAO Yang1, ZHAO Zhongli2   

  1. 1. Institute of Animal Biotechnology, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China;
    2. Institute of Animal and Veterinary Medicine, Jilin Academy of Agricultural Sciences, Gongzhuling 136100, China;
    3. Agricultural College, Yanbian University, Yanji 133002, China
  • Received:2020-08-14 Online:2021-04-20 Published:2021-04-16

Abstract: This experiment was aimed to isolate sheep skeletal muscle satellite cells(SMSCs),establish an optimal system for isolation,culture and identification of sheep SMSCs in vitro,thereby laying a seed cells for future pertinent researches.The SMSCs were isolated from new-born healthy sheep,disassociated with collagenase Ⅳ and trypsin and purified via differential adhesion method.RT-PCR and immunofluorescence methods were used to identify the expression of SMSCs marker genes paired box 7 (Pax7),Desmin and myogenic regulatory factors 1(MyoD1),and serum withdrawal method was used to induce SMSCs to differentiate into myoblasts.Satellite cells underwent muscle differentiation and formed myotubes.Muscle differentiation marker myosin heavy chain (MHC) in cytoplasm were detected by immunofluorescence.RT-PCR results showed that the amplified bands were consistent with the expected results,indicating that the cells expressed SMSCs marker genes Pax7,Desmin and MyoD1.The cultured cells expressed marker proteins Pax7,Desmin and MyoD1,demonstrating that SMSCs were obtained.Muscle differentiation marker MHC was detected in these cells.From the above results,the isolated and cultured cells were SMSCs,and a suitable in vitro culture system for sheep SMSCs was established,and myogenic differentiation was successfully carried out,which provided experimental materials and technical support for the future research on the mechanism of sheep skeletal muscle growth and development.

Key words: sheep; skeletal muscle satellite cells; isolation and culture; immunofluorescence identification; myogenic differentiation

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