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第41卷第8期                           南京医科大学学报(自然科学版)
                  2021年8月                   Journal of Nanjing Medical University(Natural Sciences)     ·1135 ·


               ·基础医学·

                二甲双胍对IFN⁃γ诱导的人卵巢颗粒细胞损伤的保护作用



                姚   雪,刘 烁,俞宛君,陶泽华,蒋雅斓,陈少聃,冉银宏,夏                        圣 *
                江苏大学医学院免疫学教研室,江苏 镇江                212013




               [摘   要] 目的:探讨二甲双胍对干扰素(interferon,IFN)⁃γ诱导的人卵巢颗粒细胞KGN功能损伤的效应及可能机制。方法:
                采用CCK⁃8法检测不同浓度二甲双胍单独及与IFN⁃γ共处理对KGN细胞活力的影响,并观察细胞生长状态的变化;流式细胞
                术检测不同处理对KGN细胞凋亡及周期的影响;q⁃PCR 法检测细胞周期蛋白依赖性激酶抑制剂1A(cyclin dependent kinase in⁃
                hibitor 1A,CDKN1A)mRNA的表达。结果:IFN⁃γ可抑制KGN细胞活力、阻滞细胞从G0⁃G1期进入S期,并促进凋亡(P < 0.05);
                二甲双胍单独处理几乎不影响KGN细胞功能;但二甲双胍与IFN⁃γ共同作用可提高损伤的KGN细胞活力,缓解IFN⁃γ引起的
                细胞凋亡及周期阻滞,并抑制细胞周期负性调节蛋白CDKN1A表达的异常上调。结论:二甲双胍可减轻IFN⁃γ诱导的KGN细
                胞功能损伤,并且可能是通过下调细胞周期负性调节蛋白CDKN1A 的异常表达发挥保护作用。
               [关键词] 二甲双胍;IFN⁃γ;人卵巢颗粒细胞KGN;凋亡;细胞周期
               [中图分类号] R392.12                   [文献标志码] A                     [文章编号] 1007⁃4368(2021)08⁃1135⁃06
                doi:10.7655/NYDXBNS20210805



                Protective effects of metformin on KGN cells injury induced by IFN⁃γ

                YAO Xue,LIU Shuo,YU Wanjun,TAO Zehua,JIANG Yalan,CHEN Shaodan,RAN Yinhong,XIA Sheng    *
                Department of Immunology,School of Medicine,Jiangsu University,Zhenjiang 212013,China



               [Abstract] Objective: This study aims to investigate the effects and potential mechanisms of metformin on the inflammatory
                cytokine interferon(IFN)⁃γ induced cell damage in human ovarian granulosa cells KGN. Methods:The effects of metformin alone and
                with IFN⁃γ on the viability of KGN cells were detected using CCK⁃8 kit,and the cell growth status of KGN cells were observed under
                microscope. The apoptotic cells and the cell cycle in KGN cells were analyzed using flow cytometry. The mRNA expression levels of
                cyclin dependent kinase inhibitor 1A(CDKN1A),a gene related to cell cycle regulation,were analyzed using q⁃PCR. Results:IFN⁃γ
                treatment inhibited the vitality of KGN cells through blocking these cells from G0⁃G1 phase to S phase and promoting into apoptosis.
                Although metformin treatment alone had no obvious effects on the KGN cells,it alleviated the apoptosis in KGN cells and reversed the
                cell cycle which induced by IFN⁃γ. Moreover,metformin significantly inhibited the expression levels of CDKN1A in IFN⁃γ treated
                KGN cells. Conclusion:Metformin had a protective role on the IFN ⁃ γ induced cell injury in KGN cells by down ⁃ regulating the
                abnormal expression of the negative cell cycle regulator CDKN1A in these cells.
               [Key words] metformin;IFN⁃γ;human ovarian granulosa cells;KGN;apoptosis;cell cycle
                                                                            [J Nanjing Med Univ,2021,41(08):1135⁃1140]





                    多 囊 卵 巢 综 合 征(polycystic ovary syndrome,      是一种炎性细胞因子,在卵泡发育过程中主要分布
                PCOS)是一种好发于育龄期妇女的内分泌紊乱疾                           在颗粒细胞(granular cells,GC)和卵母细胞中。颗
                病 [1] 。近年来的研究结果提示,PCOS 的发生发展                      粒细胞的增殖、分化在卵泡生长发育过程中起着十
                                    [2]
                与慢性炎症也密切相关 。干扰素(interferon,IFN)⁃γ                 分重要的作用,而颗粒细胞的大量凋亡会影响卵泡
                                                                  细胞的正常发育、成熟,进而导致疾病产生 。本课
                                                                                                        [3]
               [基金项目] 国家自然科学基金资助(81871234)
                ∗                                                 题组前期体外实验研究发现,IFN⁃γ作用48 h后可明
                通信作者(Corresponding author),E⁃mail: xiasheng1519@163.
                com                                               显抑制人卵巢颗粒细胞 KGN 的增殖并促进细胞凋
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