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lncRNA MALAT1 Regulates Mouse Granulosa Cell Apoptosis and 17 beta-Estradiol Synthesis via Regulating miR-205/CREB1 Axis

文献类型： 外文期刊

作者： Sun, Lei 1 ; Zhang, Pengju 2 ; Lu, Wenfa 1 ;

作者机构： 1.Jilin Agr Univ, Joint Lab Modern Agr Technol Int Cooperat, Minist Educ, Changchun 130118, Peoples R China

2.Jilin Acad Agr Sci, Inst Anim Biotechnol, Changchan 130033, Peoples R China

期刊名称：BIOMED RESEARCH INTERNATIONAL （ 影响因子：3.411； 五年影响因子：3.62 ）

ISSN： 2314-6133

年卷期： 2021 年 2021 卷

页码：

收录情况： SCI

摘要： Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), a known long noncoding RNA, was reported to play a crucial role in follicular growth and ovarian disease. However, the physiological function of MALAT1 in mouse granulosa cells (mGCs) remains largely unclear. The aims of this study were to determine the biological function and molecular mechanism of MALAT1 in mGCs. We knocked down MALAT1 in mGCs by using siRNA against MALAT1. We found that knockdown of MALAT1 promoted apoptosis and caspase-3/9 activities in mGCs. Enzyme-linked immunosorbent assay demonstrated that knockdown of MALAT1 significantly decreased the production of estradiol (E2) and progesterone (P4) in mGCs. Mechanistically, MALAT1 serves as a competing endogenous RNA (ceRNA) to sponge microRNA-205 (miR-205), thereby facilitating its downstream target of cyclic AMP response element- (CRE-) binding protein 1 (CREB1). Furthermore, CREB1 overexpression or miR-205 downregulation partially recovered the effect of MALAT1 depletion in mGCs. In summary, these findings suggested that MALAT1 regulated apoptosis and estradiol synthesis of mGCs through the miR-205/CREB1 axis.

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