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抑制Crebzf的MiR-425-5p通过染色质修饰来调节卵细胞衰老

Kadiliya Jueraitetibaike¹, Ting Tang^1,2, Rujun Ma¹

¹Department of Reproductive Medicine, Nanjing Jinling Hospital: East Region Military Command General Hospital, Medical School of Nanjing University, Nanjing, 210002, People's Republic of China.

|August 2, 2023

概括

微RNA-425-5p (miR-425-5p) 随着卵细胞的衰老而增加. 通过抗体抑制miR-425-5p,通过向Crebzf,改善了老年女性的卵细胞质量和发育,这为不孕症提供了潜在的治疗方法.

科学领域:

生殖生物学生殖生物学
分子生物学分子生物学
遗传学遗传学是一种遗传学.

背景情况:

女性不孕症通常与与年龄相关的卵细胞质量下降有关.
微RNAs (miRNAs) 在衰老过程中与细胞应激反应有关.
基于miRNA的疗法正在成为与年龄有关的疾病的潜在治疗方法.

研究的目的:

为了研究特定的微RNA在卵细胞衰老中的作用.
确定与年龄相关的卵细胞功能障碍背后的分子标和机制.
评估针对特定的miRNA来改善卵子质量的治疗潜力.

主要方法:

高通量测序用于识别老化卵细胞中差异表达的miRNA.
在体外微注射miRNA抑制剂和对抗剂.
在老年雌性小鼠体内给予miR-425-5p对抗体.
单细胞RNA测序以分析基因表达变化.
西部涂抹和定量实时PCR用于评估蛋白质和mRNA水平.

主要成果:

确定miR-425-5p是自然老化和氧化应激卵细胞中唯一升级的miRNA.
抑制miR-425-5p在体外挽救的受损卵细胞表型中.
在体内使用miR-425-5p抗体治疗通过向Crebzf.改善了老年女性的卵细胞发育.
发现Crebzf调节了素H3,三甲基化素4 (H3K4me3) 甲基化,这是转录沉默的关键标志物.
miR-425-5p过度表达通过降低Crebzf调节和破坏转录调节来抑制卵细胞成熟.

结论:

miR-425-5p在与年龄相关的卵细胞质量下降中发挥着关键作用.
用抗体药物向miR-425-5p是治疗女性不孕症的一个有希望的治疗策略.
miR-425-5p/Crebzf轴影响转录调节和卵细胞发育潜力.

关键词:

克雷布兹夫 / H3K4me3me3 / H3K4me3 / H3K4me3 / H3K4me3 / H3K4me3 / H3K4me3 / H3K4me3 / H3K4me3 在 miR-425-5p 中使用.卵细胞衰老卵细胞衰老转录的沉默转录的沉默

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