Notch2 Regulates the Function of Bovine Follicular Granulosa Cells via the Wnt2/β-Catenin Signaling Pathway

文献类型： 外文期刊

第一作者： Dang, Wenqing

作者： Dang, Wenqing;Ren, Yongping;Chen, Qingqing;He, Min;Lyu, Lihua;Kebreab, Ermias;Wang, Dong

作者机构：

关键词： Notch2; Wnt2/beta-catenin; bovine; follicular granulosa cells; interaction

期刊名称：ANIMALS （ 影响因子：3.0； 五年影响因子：3.2 ）

ISSN： 2076-2615

年卷期： 2024 年 14 卷 7 期

页码：

收录情况： SCI

摘要： Ovarian follicular GCs are strongly implicated in the growth, development, and atresia of ovarian follicles. The Wnt/beta-catenin and Notch signaling pathways participate in GC proliferation, differentiation, apoptosis, and steroid hormone production during follicular development. However, the crosstalk between Wnt and Notch signaling in GCs remains unclear. This study investigated this crosstalk and the roles of these pathways in apoptosis, cell cycle progression, cell proliferation, and steroid hormone secretion in bovine follicular GCs. The interaction between beta-catenin and Notch2 in GCs was assessed by overexpressing CTNNB1, which encodes beta-catenin. The results showed that inhibiting the Notch pathway by Notch2 silencing in GCs arrested the cell cycle, promoted apoptosis, reduced progesterone (P4) production, and inhibited the Wnt2-mediated Wnt/beta-catenin pathway in GCs. IWR-1 inhibited Wnt2/beta-catenin and Notch signaling, reduced GC proliferation, stimulated apoptosis, induced G1 cell cycle arrest, and reduced P4 production. CTNNB1 overexpression had the opposite effect and increased 17 beta-estradiol (E2) production and Notch2 protein expression. Co-immunoprecipitation assays revealed that Notch2 interacted with beta-catenin. These results elucidate the crosstalk between the Wnt/beta-catenin and Notch pathways and the role of these pathways in bovine follicular GC development.

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