树突细胞中的DNGR-1通过抑制中性粒细胞招募来限制组织损伤
Carlos Del Fresno1, Paula Saz-Leal2, Michel Enamorado2
1Immunobiology Laboratory, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain. dsancho@cnic.es cdelfresno@cnic.es.
概括
树突细胞天然杀菌素组受体-1 (DNGR-1) 限制了受伤后的炎症反应和组织损伤. DNGR-1 缺乏会通过增加中性恋来加剧胰腺炎和感染病理.
科学领域:
- 免疫学
- 细胞生物学
- 传染性疾病
背景情况:
- 宿主受伤会激活反机制以限制组织损伤.
- 传统的1型树突细胞 (cDC1s) 表达DNGR-1 (由Clec9a编码),感知组织损伤并促进与CD8+ T细胞的交叉呈现.
研究的目的:
- 研究DNGR-1在调节无菌和传染性组织损伤的炎症反应中的作用.
- 阐明DNGR-1影响宿主破坏性炎症的机制.
主要方法:
- 使用了无菌损伤的小鼠模型 (由caerulein引起的胰腺炎) 和传染性损伤 (Candida albicans系统性感染).
- 在野生型和DNGR-1缺乏的小鼠中评估了病理,免疫细胞透 (中性恋) 和细胞因子产生 (MIP-2/Cxcl2).
- 调查了SHP-1信号通路的参与.
主要成果:
- DNGR-1 缺乏症加剧了瘤性胰腺炎和Candida albicans感染病理.
- 在DNGR- 1缺乏的小鼠中,独立于B细胞和T细胞,观察到中性恋的增加.
- 在Candida感染期间,DNGR- 1激活了SHP- 1并抑制了cDC1s的MIP- 2产生,抑制了中性粒细胞的招募.
结论:
- DNGR-1 作为先天免疫反应和组织损伤的关键调节者.
- 在cDC1s中DNGR-1信号抑制中性粒细胞的招募,并促进疾病耐受性,从而控制免疫病理.
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