MiR-21-5p actions at the Smad7 gene during pig ovarian granulosa cell apoptosis

文献类型： 外文期刊

第一作者： Zhang, Xiaodong

作者： Zhang, Xiaodong;Chen, Yige;Yang, Min;Shang, Jinnan;Xu, Yiliang;Zhang, Liang;Wu, Xudong;Ding, Yueyun;Yin, Zongjun;Zhang, Xiaodong;Chen, Yige;Yang, Min;Shang, Jinnan;Xu, Yiliang;Zhang, Liang;Wu, Xudong;Ding, Yueyun;Yin, Zongjun;Liu, Yuanyuan;Chu, Mingxing

作者机构：

关键词： MiR-21-5p; Smad7; Granulosa cell; Apoptosis; Pig

期刊名称：ANIMAL REPRODUCTION SCIENCE （ 影响因子：2.145； 五年影响因子：2.281 ）

ISSN： 0378-4320

年卷期： 2020 年 223 卷

页码：

收录情况： SCI

摘要： MicroRNAs (miRNAs) are endogenous non-coding RNAs in eukaryotic cells that modulate apoptosis of ovarian granulosa cells (GCs), which is an important cause of mammalian follicular atresia. In the present study, associations were evaluated between miR-21-5p and the extent of Smad7 protein production in regulation of ovarian granulosa cell (pGC) apoptosis. There was detection of miR-21-5p and Smad7 primarily in the cytoplasm and nucleus of pGCs, respectively. When there was an enhanced abundance of miR-21-5p and decreased abundance of Smad7 there were similar effects in pGCs, including inducing proliferation, inhibiting apoptosis, increasing the number of cells in S and G2/M phases, increasing serum estradiol, and decreasing serum progesterone concentrations. Furthermore, the Smad7 mRNA transcript was identified as a target for miR-21-5p actions, with enhanced abundances of miR-21-5p being associated with a lesser abundance of Smad7 mRNA transcript and protein in pGCs. Overall, results from the present study indicate that miR-21-5p has actions on the Smad7 mRNA transcript during the process of ovarian granulosa cell apoptosis in pigs.

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