延迟胚胎细胞形成通过增加DNA损伤,减少细胞增殖和改变转录因子表达模式,降低了猪亲遗传胚胎细胞质量和化能力
Ling Sun1, Yan Wang1, Mo Yang1
1School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056038, China.
Journal of developmental biology
|October 25, 2024
概括
猪中胚胎囊形成的延迟会对胚胎质量产生负面影响. 晚期囊胚发育 (7-8天) 增加了DNA损伤和亡,减少了化能力和必要的细胞标记物.
科学领域:
- 生殖生物学 生殖生物学
- 发展生物学 发展生物学
- 胚胎学 胚胎学
背景情况:
- 胚胎形成的时间对胚胎发育至关重要.
- 亲遗传激活是一种在没有受精的情况下创造胚胎的方法.
- 评估胚胎细胞质量对于繁殖成功至关重要.
研究的目的:
- 调查胚胎细胞形成的时间如何影响猪胚胎质量.
- 评估延迟胚胎细胞发育对关键质量指标的影响.
主要方法:
- 猪胚胎是通过伴生代激活产生的.
- 胚胎囊根据形成日 (第6,7或8天) 进行了分类.
- 评估的参数包括亡,DNA复制,多能因子 (Oct4,Sox2),线粒体潜力和化能力.
主要成果:
- 延迟芽细胞形成 (7/8日) 与增加的ROS,DNA损伤和亡相关.
- 延迟形成减少了线粒体膜潜力,DNA复制,Oct4和Sox2的表达.
- 第7天的胚芽细胞减少了化率;第8天的胚芽细胞无法化.
结论:
- 延迟芽细胞形成会对猪胚胎质量产生负面影响.
- 早期胚芽细胞发育 (6日) 与优越的胚胎质量和发育潜力有关.
- 胚胎囊形成的时间是评估胚胎生存能力的关键因素.
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