miR-26b promotes granulosa cell apoptosis by targeting ATM during follicular atresia in porcine ovary.

miR-26b promotes granulosa cell apoptosis by targeting ATM during follicular atresia in porcine ovary.
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猪卵巢卵泡闭锁期间 miR-26b 通过靶向 ATM 促进颗粒细胞凋亡

DOI:
10.1371/journal.pone.0038640
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Liu HL
Liu HL
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lin F;Li R;Pan ZX;Zhou B;Yu DB;Wang XG;Ma XS;Han J;Shen M;Liu HL

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在哺乳动物中,超过99%的卵巢卵泡会发生闭锁,但卵泡闭锁的机制仍有待阐明。在本研究中,我们探究了猪卵巢中卵泡闭锁的微小RNA(miRNA)调控。构建了健康卵泡、早期闭锁卵泡和渐进性闭锁卵泡的miRNA表达谱,并对差异表达的miRNAs进行了筛选和分析。我们发现,在卵泡闭锁过程中上调的miR - 26b通过在体外直接靶向共济失调毛细血管扩张突变基因,增加了DNA断裂的数量并促进了颗粒细胞凋亡。
More than 99% of ovarian follicles undergo atresia in mammals, but the mechanism of follicular atresia remains to be elucidated. In this study, we explored microRNA (miRNA) regulation of follicular atresia in porcine ovary. A miRNA expression profile was constructed for healthy, early atretic, and progressively atretic follicles, and the differentially expressed miRNAs were selected and analyzed. We found that miR-26b, which was upregulated during follicular atresia, increased the number of DNA breaks and promoted granulosa cell apoptosis by targeting the ataxia telangiectasia mutated gene directly in vitro.
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