微粒物质诱导NLRP3在人类鼻上皮质细胞中的炎症酶介导的烧亡
Hosung Choi1, Hyunsu Choi2, Jeong-Min Oh2
1Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Journal of rhinology : official journal of the Korean Rhinologic Society
|December 12, 2024
概括
暴露于颗粒物 (PM) 在人鼻上皮质细胞中触发了细胞死亡的一种形式 - - 热亡. 这一过程依赖于NLRP3炎症体信号通路.
科学领域:
- 环境健康 环境健康
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 空气污染,特别是颗粒物 (PM),对健康构成重大风险.
- 众所周知,暴露在PM中会诱导细胞死亡,包括热亡.
- 有限的研究存在于PM诱导的鼻上皮质细胞中的烧.
研究的目的:
- 为了研究PM对人类鼻腔上皮细胞的影响.
- 探索这些细胞中PM诱导的热的机制.
主要方法:
- 人类鼻腔上皮细胞在体外培养.
- 评估了细胞活力,细胞死亡 (LDH释放,PI染色) 和热的标记物 (NLRP3,caspase-1,GSDMD-N,IL-1β,IL-18).
- 通过MCC950抑制来研究NLRP3炎症酶的作用.
主要成果:
- 暴露于颗粒物会降低细胞活力,增加细胞死亡标志物.
- 观察到与热致死相关的蛋白质 (NLRP3,裂开的卡斯帕-1,GSDMD-N) 和细胞因子 (IL-1β,IL-18) 的表达升高.
- 抑制NLRP3炎症酶减弱的PM诱导的烧.
结论:
- 颗粒物会在人类鼻腔上皮细胞中引发热.
- 在PM诱导的热中,NLRP3炎酶依赖信号通路至关重要.
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