MicroRNA expression profile in the process of cyclic mechanical stretch promoting C2C12 myogenesis
10.3969/j.issn.2095-4344.2017.28.013
- VernacularTitle:周期性机械拉伸促进C2C12细胞成肌过程中microRNA表达谱分析
- Author:
tong Yu HE
1
;
hui Ma ZHANG
;
Chen SONG
;
lan Gen YE
;
Lei YU
;
zhong Xiao QIU
;
yu Le WANG
Author Information
1. 南方医科大学人体解剖学教研室
- From:
Chinese Journal of Tissue Engineering Research
2017;21(28):4505-4511
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:In recent years,the incidence of skeletal muscle injury becomes higher and higher,but the skeletal muscle repair ability is limited;therefore,studies on the molecular mechanism of skeletal muscle repair play a positive role in the treatment of skeletal muscle injury.OBJECTIVE:To explore the role of microRNA in skeletal muscle regeneration.METHODS:C2C12 myoblasts were cyclic stretched in vitro by the Flexercell-5000 flexible device,and the appropriate stretch condition which could induce myogenesis was selected.The microRNA expression alteration during mechanical stretch-induced myoblast myogenesis was explored using high-throughout sequencing,and the differentially expressed microRNAs were further studied by the bioinformatics analysis.RESULTS AND CONCLUSION:10％ deformation,0.125 Hz cyclic mechanical stretch could promote myoblast proliferation and increase MyoD and Myogenin expressions in C2C12 myoblasts.MicroRNA expression profile alteration,including the downregulated miR-500-3p/1934-5p/31-3p/378a-5p/3473b/331-3p/5097 and upregulated miR-340-5p/449c-Sp/1941-3p,were all involved in the stretch-mediated myoblast myogenesis,and the MAPK signal pathway seemed to participate in this process.These results suggest that the low frequency of the cyclic mechanical stretch can upregulate the expression levels of myogenic regulatory factors through the alteration of MicroRNA expression,further inducing myogenesis,which the MAPK signal pathway may be involved in.
