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聚烯纳米颗粒破坏氧化酸化,并损害小鼠的胎盘发育

Bingyi Wang^1,2, Xinyi Xie², Nairui Fan³

¹Department of Cell Biology & Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.

|February 26, 2026

概括

在小鼠中,孕期暴露于聚乙烯纳米塑料 (PS-NPs) 损害了胎盘能量代谢和信号通路. 这种干扰影响了胚胎发育,突显了纳米塑料对生殖健康的风险.

科学领域:

环境毒理学环境毒理学
生殖生物学生殖生物学
发展生物学发展生物学

背景情况:

微塑料和纳米塑料是持久性污染物,对生殖健康的担忧越来越大.
聚乙烯纳米塑料 (PS-NP) 生殖毒性的机制,特别是对胎盘发育的毒性,尚未完全理解.

研究的目的:

研究妊娠期暴露于不同大小和度的PS-NPs对小鼠胎盘功能和胚胎发育的影响.
阐明导致PS-NP引起的生殖和发育毒性的分子机制.

主要方法:

在怀孕期间,ICR小鼠通过尾静脉注射暴露于PS-NP (50和200nm).
胎盘和胚胎组织在胚胎第14.5天被收集用于分析.
进行了转录基因分析,以确定胎盘中的分子变化.

主要成果:

暴露PS-NP导致胚胎体重,长度和头周长增加.
胎盘转录学揭示了线粒体基因 (Ndufa5,mt-CO1) 的下调和Cldn1和Erbb3.3的上调.
丰富的途径包括氧化酸化,TCA循环和ErbB信号传递.

结论:

PS-NP 破坏胎盘能量稳定,降低ATP 生产并增加氧化应激.
观察到发生变化的胎盘屏障功能和热囊细胞信号传递.
这项研究提供了通过代谢和信号通路中断的PS-NP生殖和发育毒性的新奇机制的证据.

关键词:

导读: 没有任何的领导力线粒体功能线粒体功能在 mt-CO1 的情况下.氧化酸化是一种氧化酸化.氧化应激是一种氧化应激.胎盘胎盘胎盘胎盘聚乙烯纳米塑料 (PS-NP) 的使用

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