暴露于PM2.5会通过诱导氧化应激和RAGE表达加剧16HBE细胞中的炎症反应和粘液产生
Huishan Han1,2, Xianru Peng1, Minyu Huang1
1Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Cell biochemistry and biophysics
|September 18, 2024
概括
颗粒物2.5 (PM2.5) 暴露会通过氧化应激和高级糖化最终产品受体 (RAGE) 途径恶化肺炎和粘液. 抑制RAGE或NADPH氧化酶可以减少这些作用,并增强保护性Nrf2.
科学领域:
- 环境健康 环境健康
- 细胞生物学 细胞生物学
- 毒理学 毒理学 毒理学
背景情况:
- 颗粒物2.5 (PM2.5) 的氧化应激与肺部疾病有关.
- 先进的糖化最终产品 (RAGE) 的受体与肺部疾病的进展有关.
研究的目的:
- 研究PM2.5对人类支气管上皮细胞 (16HBE) 的影响.
- 确定PM2.5是否通过氧化应激和RAGE信号传递调解肺损伤.
主要方法:
- 评估了细胞活力 (MTT试验),炎症 (ELISA),ROS活性 (流细胞计) 和氧化应激标志物.
- 西方斑点分析了Nrf2,RAGE,β-catenin和MUC5AC的表达.
- 免疫光追踪了β-catenin的核转位.
主要成果:
- 暴露于PM2.5会增加16HBE细胞中的炎症,氧化应激和粘液产生.
- PM2.5提高了RAGE和β-catenin的核转位,同时降低了Nrf2.
- RAGE或NADPH氧化酶抑制逆转了PM2.5诱导的肺细胞损伤.
结论:
- 通过氧化应激和RAGE激活,PM2.5驱动肺炎和粘液产生.
- 准RAGE或NADPH氧化酶可能会减轻PM2.5诱导的肺损伤.
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