Ru Wenxiu, Liu Kunpeng, Yang Jiameng, Liu Jianyong, Qi Xinglei, Huang Bizhi, Chen Hong
Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Xianyang 712100, China.
Yunnan Academy of Grassland and Animal Science, Kunming 650212, China.
Animals (Basel). 2022 Oct 17;12(20):2799. doi: 10.3390/ani12202799.
Muscle development is an important factor affecting meat yield and quality and is coordinated by a variety of the myogenic genes and signaling pathways. Recent studies reported that miRNA, a class of highly conserved small noncoding RNA, is actively involved in regulating muscle development, but many miRNAs still need to be further explored. Here, we identified that the miR-183/96/182 cluster exhibited higher expression in bovine embryonic muscle; meanwhile, it widely existed in other organizations. Functionally, the results of the RT-qPCR, EdU, CCK8 and immunofluorescence assays demonstrated that the miR-183/96/182 cluster promoted proliferation and differentiation of bovine myoblast. Next, we found that the miR-183/96/182 cluster targeted and restrained its expression. Meanwhile, the expression of had a negative correlation with the expression of the miR-183/96/182 cluster during myoblast differentiation. In a word, our findings indicated that the miR-183/96/182 cluster serves as a positive regulator in the proliferation and differentiation of bovine myoblasts through suppressing the expression of .
肌肉发育是影响产肉量和肉质的重要因素,并且由多种成肌基因和信号通路协调。最近的研究报道,miRNA作为一类高度保守的小非编码RNA,积极参与调节肌肉发育,但许多miRNA仍有待进一步探索。在此,我们发现miR-183/96/182簇在牛胚胎肌肉中表达较高;同时,它广泛存在于其他组织中。在功能上,RT-qPCR、EdU、CCK8和免疫荧光分析结果表明,miR-183/96/182簇促进了牛成肌细胞的增殖和分化。接下来,我们发现miR-183/96/182簇靶向并抑制其表达。同时,在成肌细胞分化过程中, 的表达与miR-183/96/182簇的表达呈负相关。总之,我们的研究结果表明,miR-183/96/182簇通过抑制 的表达,在牛成肌细胞的增殖和分化中起正调节作用。