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Heat shock cognate protein 70 promotes the differentiation of C2C12 myoblast and targets Yin Yang 1

  
@article{ATM30268,
	author = {Lei Chen and Tao Guo and Yan Yu and Yeqing Sun and Guangrong Yu and Liming Cheng},
	title = {Heat shock cognate protein 70 promotes the differentiation of C2C12 myoblast and targets Yin Yang 1},
	journal = {Annals of Translational Medicine},
	volume = {7},
	number = {20},
	year = {2019},
	keywords = {},
	abstract = {Background: Heat shock cognate protein 70 (HSC70) is a constitutively expressed molecular chaperone protein which can maintain the structure and function of the protein. HSC70 is engaged in a variety of physiological processes, yet its role during skeletal muscle differentiation is still unclear.
Methods: C2C12 cells were obtained and cultured. During differentiation, the expression of HSC70 was evaluated by RT-PCR. To determine the function of HSC70 during C2C12 myoblast differentiation, myotube transfection of siR-HSC70 was performed with Lipofectamine 2000 Reagent. Western blot was used to measure the expression of Yin Yang 1 (YY1) after down-regulating HSC70. To further assess if YY1 mediates the pro-differentiation effect of HSC70, a plasmid of YY1 overexpression was used to increase the expression of YY1 in the presence of siR-HSC70-2. The formation of myotubes was visualized by immunofluorescent staining, while the expression levels of MyoD and MyoG were evaluated by RT-PCR. 
Results: In this study, we found that HSC70 was up-regulated during C2C12 myoblast differentiation. Knockdown of HSC70 not only inhibited the C2C12 myoblast differentiation but also reduced the expression of MyoD and MyoG. When YY1 protein was over-expressed, it could restore the differentiation in cells with HSC70 knockdown or inhibition. 
Conclusions: Collectively, this study demonstrates that HSC70 is involved in the regulation of C2C12 myoblast differentiation via YY1 and may serve as a potential target for a therapeutic strategy to prevent muscle atrophy.},
	issn = {2305-5847},	url = {https://atm.amegroups.org/article/view/30268}
}