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重庆医科大学公共卫生学院生殖与发育教育部国际合作联合实验室,重庆 400016
贺思慧,Email:18702307890@163.com,研究方向:m6A修饰对生殖功能的影响。
李 娜,Email:coco0411@126.com。
收稿:2025-06-24,
修回:2025-08-02,
录用:2025-09-15,
纸质出版:2025-11-28
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贺思慧,李伟轲,高茹菲等.ALKBH5介导的m6A修饰在早孕小鼠子宫内膜蜕膜化中的作用研究[J].重庆医科大学学报,2025,50(11):1541-1549.
He Sihui,Li Weike,Gao Rufei,et al.Role of ALKBH5-mediated m6A modification in endometrial decidualization of mice in early pregnancy[J].Journal of Chongqing Medical University,2025,50(11):1541-1549.
贺思慧,李伟轲,高茹菲等.ALKBH5介导的m6A修饰在早孕小鼠子宫内膜蜕膜化中的作用研究[J].重庆医科大学学报,2025,50(11):1541-1549. DOI: 10.13406/j.cnki.cyxb.003949.
He Sihui,Li Weike,Gao Rufei,et al.Role of ALKBH5-mediated m6A modification in endometrial decidualization of mice in early pregnancy[J].Journal of Chongqing Medical University,2025,50(11):1541-1549. DOI: 10.13406/j.cnki.cyxb.003949.
目的
2
探讨烷基化修复同源物5(alkylation repair homolog 5,ALKBH5)介导的N6-甲基腺苷(N6-methyladenosine,m6A)修饰在子宫内膜蜕膜化过程中的作用。
方法
2
构建妊娠小鼠模型和假孕小鼠模型,通过实时荧光定量PCR、蛋白质印迹法检测ALKBH5在子宫内膜中的表达规律。构建人工诱导蜕膜化的小鼠模型及细胞模型,采用实时荧光定量PCR、蛋白质印迹法、免疫组织化学法检测蜕膜化相关标志物表达。采用EpiQuik m6A RNA甲基化定量试剂盒检测m6A水平。构建干扰ALKBH5表达的人工诱导蜕膜化小鼠模型及细胞模型,利用实时荧光定量PCR、蛋白质印迹法、免疫组织化学法检测蜕膜化相关标志物、细胞增殖标志分子和凋亡分子的表达。采用流式细胞分析术检测细胞凋亡率。
结果
2
在妊娠小鼠模型中,子宫胚胎着床点ALKBH5的表达明显高于着床旁;在人工诱导蜕膜化的小鼠和细胞模型中,与对照组相比,诱导组ALKBH5的表达水平明显升高,同时m6A水平明显降低。若干扰ALKBH5表达,则可导致m6A水平升高,进而抑制基质细胞增殖,诱导细胞凋亡,最终损害子宫内膜蜕膜化的正常进程。
结论
2
ALKBH5缺失可导致子宫内膜m6A水平升高,从而导致蜕膜化损伤,为m6A修饰在蜕膜化的研究奠定了基础。
Objective
2
To investigate the role of alkylation repair homolog 5(ALKBH5)-mediated N6-methyladenosine (m6A) modification in endometrial decidualization.
Methods
2
The mouse models of pregnancy and pseudopregnancy were established,and quantitative real-time PCR and Western blot were used to measure the expression pattern of ALKBH5 in the endometrium. The mouse and cell models of artificially induced decidualization were established,and quantitative real-time PCR,Western blot,and immunohistochemistry were used to measure the expression levels of decidualization-related markers. The EpiQuik m6A RNA methylation quantification kit was used to measure the level of m6A. The mouse and cell models of artificially induced decidualization with interference of ALKBH5 expression were established,and quantitative real-time PCR,Western blot,and immunohistochemistry were used to measure the expression levels of decidualization-related markers,cell proliferation marker molecules,and apoptosis molecules. Flow cytometry was used to measure cell apoptosis rate.
Results
2
In the mouse model of pregnancy,the expression level of ALKBH5 at the uterine embryo implantation site was significantly higher than that adjacent to the implantation site,and in the mouse and cell models of artificially induced decidualization,compared with the control group,the induction group had a significant increase in the expression level of ALKBH5 and a significant reduction in the level of m6A. Inhibiting the expression of ALKBH5 led to an increase in the level of m6A,which in turn inhibited the proliferation of stromal cells,induced cell apoptosis,and ultimately impaired the normal process of endometrial decidualization.
Conclusion
2
ALKBH5 deficiency leads to an increase in the level of m6A and decidualization injury in the endometrium,which lays a foundation for the research on m6A modification in decidualization.
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