1型先天性淋巴细胞-未成熟的中性粒细胞轴抑制急性组织炎症
Kenshiro Matsuda1,2,3,4, Natsuki Ide1,5, Yan Xu1,6
1Department of Immunology, Institute of Medicine, University of Tsukuba, Ibaraki, Japan.
Nature communications
|July 17, 2025
概括
1型先天性淋巴细胞 (ILC1) 释放干扰素- (IFN-γ) 来调动骨髓中的未成熟中性粒细胞 (imNeu). 这个ILC1-imNeu轴保护组织免受急性炎症和损伤.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 不成熟的中性粒细胞 (imNeu) 对于免疫反应至关重要,但它们从骨髓 (BM) 的调动知之甚少.
- 了解免疫调动对于治疗炎症疾病至关重要.
研究的目的:
- 为了阐明来自BM的ImNeu动员机制.
- 研究1型先天性淋巴细胞 (ILC1) 在imNeu迁移中的作用.
- 确定ILC1-imNeu轴在炎症中的病理生理意义.
主要方法:
- 在小鼠模型中研究 imNeu 迁移的肝脏缺血-再输液损伤和多微生物败血症.
- 使用了干扰素- (IFN-γ) 和ILC1操纵.
- 分析了支架蛋白 Ahnak 和 Smad7 核转移的作用.
- 评估了C-X-C化学因子受体4 (CXCR4) 表达和互白素-10 (IL-10) 生产.
主要成果:
- 来自ILC1的IFN-γ增强了来自BM的ImNeu,但不是成熟的中性粒细胞迁移.
- 在imNeu中的阿纳克蛋白促进Smad7核转位响应IFN-γ,降低调控CXCR4.
- 减少CXCR4表达促进了从BM释放到循环和炎症组织中的imNeu.
- 来自 imNeu 的 IL-10 可以改善组织炎症.
结论:
- 确定了ILC1-imNeu轴作为中性粒细胞调动的关键调节器.
- 证明IFN-γ介导的CXCR4下调对imNeu释放至关重要.
- 确立了imNeu在缓解急性组织炎症和损伤方面的保护作用.
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