中性细胞细胞外陷在牛皮中促进巨细胞炎症
Ruolin Li1, Yunjie Xiong2, Linqiang Ma2
1Department of Dermatology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Clinical immunology (Orlando, Fla.)
|July 13, 2024
概括
中性细胞外细胞陷 (NETs) 通过激活巨细胞STING信号来驱动牛皮炎症. 缺少PAD4会减少皮肤病变,突出显示NETs是牛皮的治疗标.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 细胞生物学 细胞生物学
背景情况:
- 牛皮是一种与免疫失调相关的慢性炎症性皮肤疾病.
- 巨细胞是牛皮病原体的核心,但它们的激活机制仍然不清楚.
- 中性粒细胞外细胞陷 (NETs) 影响巨细胞的功能,可能在牛皮中起作用.
研究的目的:
- 调查NETs在牛皮病原发生中的作用.
- 为了阐明银病中巨细胞激活的机制.
- 探索STING信号通路在NET介导的牛皮的参与.
主要方法:
- 在牛皮病变中评估NET沉积.
- 使用了一种因伊米基莫德诱导的牛皮小鼠模型,该小鼠具有PAD4缺乏.
- 研究了STING信号通路的激活和对STING激动剂 (DMXAA) 和抑制剂 (C-176) 的反应.
- 研究了对巨细胞炎症和HaCaT细胞增殖的影响.
主要成果:
- 在牛皮病变中,NET沉积量升高.
- 在小鼠模型中,PAD4缺乏减少了皮肤病变和炎症.
- 在牛皮中,STING信号通路被激活,而在PAD4缺陷下被抑制.
- 在PAD4缺乏的小鼠中,STING激活加剧了症状,而STING抑制减少了NET诱导的炎症和细胞增殖.
结论:
- NET 在牛皮发育中起着重要作用.
- 巨细胞中的STING/NF-κB信号通路与NET相关的牛皮病原发生有关.
- 准NET或STING通路可能为牛皮提供治疗策略.
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