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黑色素通过激活Nrf2信号通路来缓解铁亡,从而防止颗粒物诱导的卵巢功能障碍

Xiaoyuan Zhang¹, Xiaxia Man², Qi Zhang³

¹Department of Reproductive Medicine, Jilin Provincial Key Laboratory of Women's Reproductive Health, The First Hospital of Jilin University, Changchun, Jilin, China.

|November 6, 2024

概括

暴露于空气污染颗粒PM2.5会通过诱导细胞死亡的一种类型 - - 铁亡 - - 引起卵巢衰竭. 黑色素治疗通过Nrf2通路抑制铁亡,从而保护卵巢功能.

科学领域:

环境健康环境健康
生殖生物学生殖生物学
细胞死亡机制细胞死亡机制

背景情况:

环境细颗粒物 (PM2.5) 暴露与原发性卵巢缺陷 (POI) 风险的增加有关.
铁亡的作用,一个独特的细胞死亡途径,在PM2.5诱导的POI中仍然没有被阐明.

研究的目的:

为了调查PM2.5诱导的铁死在卵巢功能障碍中的参与.
为了确定是否可以通过Nrf2信号通路通过抑制铁亡来减轻POI.

主要方法:

使用KGN细胞的体外研究和使用Nrf2-淘汰赛和对照小鼠的体内研究.
对铁亡标记物的评估,包括铁积累,脂质过氧化,MDA,GSH,GPX4和XCT.
评估黑素和铁素-1 (Fer-1) 对铁和卵巢功能的影响.
对Nrf2信号通路激活的分析.

主要成果:

暴露于PM2.5促进了卵巢细胞和组织中的铁亡,由增加的铁积累和脂质过氧化证明.
Nrf2通路的激活是至关重要的,Nrf2-过度表达的细胞受到保护,而Nrf2-敲击细胞显示出增强的铁亡.
通过激活Nrf2通路,氨酸和Fer-1治疗抑制了铁亡并改善了卵巢功能.
Nrf2淘汰赛小鼠对铁亡和PM2.5诱导的POI的敏感性增加.

结论:

暴露于PM2.5会触发卵巢中的铁亡,导致POI的发展.
黑色素通过激活Nrf2信号通路来抑制铁亡,从而改善PM2.5诱导的POI.

关键词:

铁化是铁化的一种.黑色素是什么黑色素是什么黑色素是什么 Nrf2 没有任何问题.对于PM2.5来说,这是一个很好的例子.过早的卵巢衰竭是早期的卵巢衰竭.

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