畜牧兽医学报 ›› 2023, Vol. 54 ›› Issue (6): 2421-2435.doi: 10.11843/j.issn.0366-6964.2023.06.021

• 生物技术与繁殖 • 上一篇    下一篇

miR-144-5p靶向WNT5a对山羊卵巢颗粒细胞增殖、凋亡的影响

刘杰1,2, 许香萍1,2, 邓铭1,3,4, 邹娴1,2, 江声伟1,2, 刘德武1,3,4, 柳广斌1,3,4, 孙宝丽1,3,4, 郭勇庆1,3,4, 李耀坤1,3,4*   

  1. 1. 华南农业大学动物科学学院, 广州 510642;
    2. 广东省农业科学院动物科学研究所, 畜禽育种国家重点实验 室, 广东省畜禽育种与营养研究重点实验室, 广州 510640;
    3. 华南农业大学 畜禽育种国家地方联合工程研究中 心, 广州 510642;
    4. 华南农业大学, 广东省农业动物基因组学与分子育种重点实验室, 广州 510642
  • 收稿日期:2022-08-30 出版日期:2023-06-23 发布日期:2023-06-16
  • 通讯作者: 李耀坤,主要从事动物繁殖与生产研究,E-mail:ykli@scau.edu.cn
  • 作者简介:刘杰(1998-),男,山东临沂人,硕士生,主要从事动物遗传育种与繁殖研究,E-mail:1968286470@qq.com;许香萍(1997-),女,广东潮州人,硕士生,主要从事动物繁殖与生产研究,E-mail:99502921616@qq.com
  • 基金资助:
    广东省现代农业产业技术体系项目(2021KJ127);广东省科技特派员项目(KTP20210344)

Effect of miR-144-5p Targeting WNT5a on the Proliferation and Apoptosis of Goat Ovarian Granulosa Cells

LIU Jie1,2, XU Xiangping1,2, DENG Ming1,3,4, ZOU Xian1,2, JIANG Shengwei1,2, LIU Dewu1,3,4, LIU Guangbin1,3,4, SUN Baoli1,3,4, GUO Yongqing1,3,4, LI Yaokun1,3,4*   

  1. 1. College of Animal Science, South China Agricultural University, Guangzhou 510642, China;
    2. Guangdong Key Laboratory of Animal Breeding and Nutrition, State Key Laboratory of Livestock and Poultry Breeding, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    3. National Engineering Research Center for Livestock and Poultry Breeding, South China Agricultural University, Guangzhou 510642, China;
    4. Guangdong Key Laboratory of Agricultural Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
  • Received:2022-08-30 Online:2023-06-23 Published:2023-06-16

摘要: 旨在探究miR-144-5p靶向WNT5a对山羊颗粒细胞增殖和凋亡的影响。本研究选用2岁健康雷州母山羊的卵巢颗粒细胞来过表达和抑制表达miR-144-5p及WNT5a,通过荧光定量PCR(real-time qPCR, RT-qPCR)、Western blot、双荧光素酶报告基因、CCK-8等技术来探究miR-144-5p与WNT5a对颗粒细胞增殖和凋亡的影响。结果表明,miR-144-5p在大卵泡颗粒细胞中的表达量极显著高于小卵泡颗粒细胞(P<0.01),WNT5a在大卵泡颗粒细胞中的表达量极显著低于小卵泡颗粒细胞(P<0.01);CCK-8检测发现,miR-144-5p抑制了GCs增殖,过表达miR-144-5p后,抑凋亡基因BCL-2的mRNA和蛋白表达极显著下调(P<0.01),促凋亡基因BAX的mRNA和蛋白表达极显著上调(P<0.01);Wnt/β-Catenin通路基因CTNNB1 mRNA和β-Catenin蛋白水平极显著降低(P<0.01);另外,miR-144-5p能靶向WNT5a抑制其表达。同时,CCK-8检测结果表明,WNT5a可促进GCs增殖,过表达WNT5a后,抑凋亡基因BCL-2的mRNA和蛋白水平极显著上调(P<0.01),促凋亡基因BAX的mRNA显著下调(P<0.05)、蛋白水平极显著下调(P<0.01),Wnt/β-Catenin通路CTNNB1 mRNA和β-Catenin蛋白水平极显著提高(P<0.01)。综上所述,在GCs中,miR-144-5p靶向负调控WNT5a的表达,调控Wnt/β-Catenin通路,进而上调BAX/BCL-2的比值来抑制颗粒细胞增殖并促进其凋亡,这可能对山羊的排卵数和产羔数产生一定的影响。

关键词: 颗粒细胞, miR-144-5p, WNT5a, 山羊, 繁殖

Abstract: The study aimed to investigate the effect of miR-144-5p targeting WNT5a on proliferation and apoptosis of goat granulosa cells. Ovarian granulosa cells from 2-year-old healthy Leizhou female goats were selected to overexpress and repress miR-144-5p and WNT5a, and the effects of miR-144-5p and WNT5a on granulosa cell proliferation and apoptosis were investigated by fluorescent quantitative PCR (real-time qPCR, RT-qPCR), Western blot, dual luciferase reporter gene, CCK-8 and other techniques. The results showed that the expression of miR-144-5p was significantly higher in large follicular granulosa cells than that in small follicular granulosa cells (P<0.01), and the expression of WNT5a was significantly lower in large follicular granulosa cells than that in small follicular granulosa cells (P<0.01); CCK-8 assay revealed that miR-144-5p inhibited the proliferation of GCs, and overexpression of miR-144-5p resulted in significant downregulation of mRNA and protein expression of the apoptosis suppressor gene BCL-2 (P<0.01) and significant upregulation of mRNA and protein expression of the pro-apoptotic gene BAX (P<0.01); Wnt/β-Catenin pathway gene CTNNB1 mRNA and β-Catenin protein levels were highly significantly reduced (P<0.01); In addition, miR-144-5p could target WNT5a to inhibit its expression. Meanwhile, CCK-8 assay results showed that WNT5a promoted the proliferation of GCs, and overexpression of WNT5a significantly upregulated the mRNA and protein levels of the BCL-2 (P<0.01), significantly downregulated the mRNA level (P<0.05) and protein level (P<0.01) of BAX, and the Wnt/β-Catenin pathway gene CTNNB1 mRNA and β-Catenin protein levels were significantly increased (P<0.01). In summary, in GCs, miR-144-5p targets and negatively regulates WNT5a expression, regulates the Wnt/β-Catenin pathway, and then upregulates the BAX/BCL-2 ratio to inhibit granulosa cell proliferation and promote apoptosis, which may have an effect on ovulation and lambing numbers in goats.

Key words: granulosa cells, miR-144-5p, WNT5a, goat, reproduction

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