化 (Cetylpyridinium chloride) 在胚胎早期发育过程中,通过损害线粒体功能和基因素修饰来破坏孕产妇到胚胎的过渡
Caiyun Wu1, Zhiming Ding1, Xuanxi Li1
1Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Hefei 230022, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, No.81 Meishan Road, Hefei 230032, China; Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Ministry of Education of the People's Republic of China, No.81 Meishan Road, Hefei 230032, China.
Ecotoxicology and environmental safety
|July 3, 2025
概括
环境暴露于化 (CPC) 破坏小鼠早期胚胎发育,通过损害线粒体功能和改变基因表达. 这种生殖毒性突显了女性健康的潜在风险.
科学领域:
- 生殖生物学 生殖生物学
- 发育毒理学 发展毒理学
- 分子胚胎学 分子胚胎学
背景情况:
- 化 (CPC) 是一种常见的消毒剂,已知有毒作用,但其对女性生殖和早期胚胎发育的具体影响尚未完全理解.
- 以前的研究表明,CPC在细胞类型中具有毒性,因此需要对其对早期胚胎发生的微妙过程的影响进行调查.
- 了解CPC的生殖毒性对于评估环境健康风险至关重要.
研究的目的:
- 研究环境中CPC度对小鼠早期胚胎发育的 in vitro 影响.
- 阐明CPC影响胚胎发育的潜在分子机制,重点关注基因表达,线粒体功能和表观遗传修饰.
- 评估CPC对女性健康的潜在生殖毒性.
主要方法:
- 在实验室中,将小鼠的两细胞胚胎暴露在CPC的不同度中.
- 转录组测序用于识别差异表达基因 (DEG) 和分析受影响的通路.
- 测量细胞内ATP水平,线粒体膜潜力,活性氧物种 (ROS) 和DNA损伤.
- 对基因素甲基化和乙化修饰的分析 (H3K9me3,acH3K27,H3K27me3,acH3K9).
主要成果:
- 在环境度中暴露于CPC会以剂量依赖的方式损害小鼠早期胚胎发育.
- 转录组分析揭示了3799个DEG,显著影响了线粒体功能,ROS生产和基因转录通路.
- 通过阻碍胚胎基因组激活和母体效应基因降解,CPC破坏了母体到胚胎的转变 (MZT).
- CPC暴露导致ATP减少,线粒体膜潜能增加,ROS和DNA损伤增加,表明线粒体功能障碍和氧化应激.
- 观察到改变的基因组修饰,包括增加H3K9me3和acH3K27,以及减少H3K27me3和acH3K9.
结论:
- 环境中CPC度会破坏小鼠植入前胚胎发育,因为它会损害线粒体功能,改变组织组织蛋白的修饰,最终阻断发育.
- 在早期胚胎中,CPC暴露会干扰关键的母体至胚胎过渡 (MZT).
- 这些发现揭示了CPC的显著生殖毒性,突出了女性生殖健康的潜在风险.
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