数字农科院2.0

miR-7 regulates the apoptosis of chicken primary myoblasts through the KLF4 gene

文献类型： 外文期刊

作者： Zhang, X.;Chen, F.;He, M.;Wu, P.;Zhou, K.;Zhang, T.;Chu, M.;Zhang, G.

作者机构：

关键词： miR-7; KLF4; myoblasts; apoptosis; Jinghai yellow chicken

期刊名称： BRITISH POULTRY SCIENCE

ISSN： 0007-1668

年卷期： 2021 年

页码：

收录情况： JCR（2021版）

摘要： 1. MicroRNAs (miRNAs) play a vital role in the proliferation, differentiation, and apoptosis of myoblasts. However, the effect of miR-7 on the apoptosis of chicken primary myoblasts (CPMs) and its mechanism is still unclear. 2. In this study, the expression of apoptosis marker genes (RAF1, Caspase3, Caspase9, Cytc, Fas) in CPMs was significantly increased after transfection of miR-7 mimic. The expression of the apoptosis marker genes in CPMs was significantly reduced after transfection with miR-7 inhibitor. Flow cytometry showed that the late apoptosis rate of the mimic group was significantly higher than the negative control (NC). The viable cells of the mimic group were significantly lower than the NC. In contrast, inhibition of miR-7 had the opposite effect. 3. The dual-luciferase assay showed that the KLF4 was a target gene of miR-7. The rescue experiment showed that the KLF4 gene could attenuate the effect of miR-7 on the expression of apoptosis marker genes in CPMs. 4. Determination of the function the KLF4 gene showed that the expression of the apoptosis marker genes in CPMs decreased significantly compared with the NC after its overexpression. Inhibition of KLF4 gene had the opposite effect. Flow cytometry showed that overexpression of the KLF4 gene inhibited early apoptosis of myoblasts (P <= 0.01), while interference with the KLF4 gene could promote early apoptosis of myoblasts (P <= 0.001). 5. The results demonstrated, for the first time, that miR-7 promotes apoptosis in chicken primary myoblasts by regulating the expression of the KLF4 gene.

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