miR-214-3p与EZH2的靶向关系及其对卵巢癌SKOV3细胞增殖、侵袭和凋亡的影响
翟丽 , 陈孟 , 罗建波 , 张爱利 , 王良晓 , 魏颖 , 张曦
吉林大学学报(医学版) ›› 2026, Vol. 52 ›› Issue (02) : 460 -468.
miR-214-3p与EZH2的靶向关系及其对卵巢癌SKOV3细胞增殖、侵袭和凋亡的影响
Targeting relationship between miR-214-3p and EZH2 and its effects on proliferation, invasion, and apoptosis of ovarian cancer SKOV3 cells
目的 探讨微小RNA-214-3p(miR-214-3p)和果蝇zeste基因增强子人类同源物2(EZH2)之间的靶向关系,并阐明其对卵巢癌SKOV3细胞增殖、侵袭和凋亡的影响。 方法 将人卵巢癌SKOV3细胞分为对照组、 mimics阴性对照(NC)组、 miR-214-3p mimics组、 miR-214-3p mimics+过表达NC(OE-NC)组和miR-214-3p mimics+过表达EZH2(OE-EZH2)组。采用实时荧光定量PCR(RT-qPCR)法检测各组细胞中miR-214-3p和EZH2 mRNA表达水平,Western blotting法检测各组细胞中EZH2蛋白表达水平。构建含EZH2野生型(WT)或突变型(MT)报告质粒,与miR-214-3p mimics或NC共转染至293T细胞,采用双荧光素酶报告基因实验检测各组细胞荧光素酶活性。采用细胞计数试剂盒8(CCK-8)法检测各组细胞活性,Transwell小室实验检测各组侵袭细胞数,流式细胞术检测各组细胞凋亡率和细胞周期分布。 结果 与对照组和mimics NC组比较,miR-214-3p mimics组细胞中miR-214-3p表达水平明显升高(P<0.05),EZH2 mRNA和蛋白表达水平明显降低(P<0.05)。与miR-214-3p mimics组比较,miR-214-3p mimics+OE-EZH2组细胞中miR-214-3p表达水平明显降低(P<0.05),EZH2 mRNA和蛋白表达水平明显升高(P<0.05)。与pGL3-EZH2-WT+NC组比较,pGL3-EZH2-WT+miR-214-3p mimics组荧光素酶活性明显降低(P<0.05)。与对照组和mimics NC组比较,miR-214-3p mimics组细胞活性明显降低(P<0.05),侵袭细胞数明显减少(P<0.05),细胞凋亡率明显升高(P<0.05),细胞周期G1期细胞百分率明显升高(P<0.05)。与miR-214-3p mimics组比较,miR-214-3p mimics+OE-EZH2组细胞活性明显升高(P<0.05),侵袭细胞数明显增加(P<0.05),细胞凋亡率明显降低(P<0.05)。 结论 miR-214-3p可靶向下调EZH2表达,从而抑制卵巢癌SKOV3细胞的增殖和侵袭能力,促进细胞凋亡。EZH2过表达可拮抗miR-214-3p的抑癌作用,进一步证实了二者间的靶向调控关系。
Objective To discuss the targeting relationship between microRNA-214-3p (miR-214-3p) and enhancer of zeste homolog 2 (EZH2), and to clarify its effects on the proliferation, invasion, and apoptosis of ovarian cancer SKOV3 cells. Methods The human ovarian cancer SKOV3 cells were divided into control group, mimics negative control (NC) group, miR-214-3p mimics group, miR-214-3p mimics+overexpression NC (OE-NC) group, and miR-214-3p mimics+overexpression EZH2 (OE-EZH2) group. Real-time fluorescence quantitative PCR (RT-qPCR) method was used to detect the expression levels of miR-214-3p and EZH2 mRNA in the cells in various groups; Western blotting method was used to detect the expression levels of EZH2 protein in the cells in various groups. Reporter plasmids containing wild-type (WT) or mutant-type (MT) EZH2 were constructed and co-transfected with miR-214-3p mimics or NC into the 293T cells, and the dual-luciferase reporter gene assay was used to detect the luciferase activities of the cells in various groups. Cell counting kit-8 (CCK-8) method was used to detect the activities of the cells in various groups; Transwell chamber assay was used to detect the numbers of invasion cells in various groups; flow cytometry was used to detect the apoptotic rates and cell cycle distribution of the cells in various groups. Results Compared with control group and mimics NC group, the expression level of miR-214-3p in the cells in miR-214-3p mimics group was significantly increased (P<0.05), and the expression levels of EZH2 mRNA and protein were significantly decreased (P<0.05). Compared with miR-214-3p mimics group, the expression level of miR-214-3p in the cells in miR-214-3p mimics+OE-EZH2 group was significantly decreased (P<0.05), and the expression levels of EZH2 mRNA and protein were significantly increased (P<0.05). Compared with pGL3-EZH2-WT+NC group, the luciferase activity in the cells in pGL3-EZH2-WT+miR-214-3p mimics group was significantly decreased (P<0.05). Compared with control group and mimics NC group, the activity of the cells in miR-214-3p mimics group was significantly decreased (P<0.05), the number of invasion cells was significantly decreased (P<0.05), the apoptotic rate was significantly increased (P<0.05), and the percentage of the cells at G1 phase was significantly increased (P<0.05). Compared with miR-214-3p mimics group, the activity of the cells in miR-214-3p mimics+OE-EZH2 group was significantly increased (P<0.05), the number of invasion cells was significantly increased (P<0.05), and the apoptotic rate was significantly decreased (P<0.05). Conclusion miR-214-3p can down-regulate EZH2 expression by targeting it, thereby inhibiting the proliferation and invasion abilities and promoting the apoptosis of ovarian cancer SKOV3 cells. Overexpression of EZH2 can antagonize the tumor-suppressive effect of miR-214-3p, further confirming the targeting regulatory relationship between them.
| [1] |
|
| [2] |
姜丹凤, 朱孟秀, 赵清娟, |
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
孙伟涛, 石彦科, 封俊连, |
| [8] |
|
| [9] |
严 涵, 郭绍兰, 戴学敏, |
| [10] |
尹艳辉, 吴爱军, 周玲芝. 鼻咽癌患者miR-214-3p表达意义及与预后的关系分析[J]. 现代医学, 2022, 50(8): 974-979. |
| [11] |
周大新, 谢方利, 刘海科, |
| [12] |
郭剑锋. EZH2调节P57的表达促进卵巢癌进展的体内外实验研究[D]. 武汉: 华中科技大学, 2011. |
| [13] |
王俊杰, 蔡 晶, 高艳萍, |
| [14] |
杨 丹, 李 凤, 杨斐斐, |
| [15] |
|
| [16] |
|
| [17] |
胡双洁, 章 勇, 薄维波, |
| [18] |
孙海力, 李绍霄, 叶纪拓. circRNA001263-miR-214信号轴调控鼻咽癌干细胞信号通路的机制研究[J]. 健康研究, 2024, 44(6): 675-682. |
| [19] |
黎康玲. miR-214-3p调控IKBKB基因抑制宫颈癌细胞的迁移及增殖[D]. 衡阳: 南华大学, 2024. |
| [20] |
|
| [21] |
|
云南省科技厅应用基础研究计划项目(202101AY070001-165)
云南省教育厅科学研究基金项目(2024J0330)
©《吉林大学学报(医学版)》编辑部,开放获取遵循CC BY-NC-ND协议。
/
| 〈 |
|
〉 |