作为卵细胞衍生因子,EFNA5通过在体外成熟过程中调节氧化应激,炎症和亡来增强发育能力
Xingyuan Liu1, Jian Cui1, Yubing Wang1
1College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Antioxidants (Basel, Switzerland)
|December 30, 2025
概括
埃弗林-A5 (EFNA5) 通过减少氧化和炎症应激来改善卵细胞的体外成熟 (IVM). 这种来自卵细胞的因子增强了胚胎的发育,为辅助生殖技术提供了一个新的策略.
科学领域:
- 生殖生物学 生殖生物学
- 发展生物学 发展生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 卵子细胞的体外成熟 (IVM) 是受氧化应激和糟糕的积卵子-卵子细胞通信的限制.
- 卵细胞衍生因子 (ODF) 在IVM期间对调节卵细胞质量和发育能力至关重要.
- 识别关键的ODF对于改善IVM协议和辅助生殖技术至关重要.
研究的目的:
- 调查以弗林-A5 (EFNA5) 作为ODF在IVM期间调节卵细胞质量的作用.
- 阐明EFNA5影响积卵细胞复合体扩张,氧化应激和炎症的机制.
- 评估EFNA5作为治疗剂的潜力,以提高IVM结果.
主要方法:
- 跨物种转录组分析以评估卵细胞中的EFNA5表达.
- 绵羊IVM模型补充了复合EFNA5.5的补充.
- 评估胚芽细胞形成率,总细胞数和细胞亡.
- 对活性氧物种 (ROS) 水平,NRF2和NF-κB信号通路的分析.
- 用RNA测序和功能验证来评估DNA损伤和氧化还原平衡.
主要成果:
- 与体内对应物相比,在体外成熟的卵细胞中EFNA5的表达减少.
- 再组合EFNA5补充剂显著改善了胚胎细胞的形成,并增加了总细胞数量.
- EFNA5促进了积卵细胞复合体扩张,减少了ROS积累,并激活了NRF2依赖的抗氧化剂信号.
- EFNA5抑制了NF-κB驱动的炎症,增强了氧化还原平衡,减少了DNA损伤,从而改善了卵细胞的发育潜力.
结论:
- EFNA5是一种保存的卵细胞衍生因子,在IVM期间增强卵细胞质量和胚胎发育.
- EFNA5减轻氧化和炎症压力,这是改善IVM成功的关键机制.
- 通过优化卵细胞成熟,EFNA5代表了推进辅助生殖技术的有希望的战略.
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