EPISODE · Sep 29, 2026 · 18 MIN
1627-IL-17A+ γδ T 细胞拮抗脓肿分枝杆菌感染的免疫机制
from 聊聊Sci
这篇文章详细阐述了IL-17A+ γδ T细胞在抵御脓肿分枝杆菌（MAB）感染中的关键保护作用。通过小鼠模型实验，研究人员发现巨噬细胞利用TLR2受体识别细菌，进而产生IL-1β和IL-23，这两种细胞因子共同驱动了γδ T细胞的扩增与激活。研究表明，这些特定的T细胞并非依赖干扰素（IFNγ），而是通过分泌白细胞介素-17A（IL-17A）和释放颗粒酶B来直接杀灭病原体。即使在干扰素介导的免疫功能缺陷或患有肺纤维化的情况下，这些γδ T细胞依然能显著降低肺部病变和细菌负荷。该研究不仅揭示了一种新型的非干扰素依赖性免疫机制，还为治疗耐药性非结核分枝杆菌感染提供了极具潜力的免疫治疗靶点。References:Hu X, Lin S, Meng W, et al. IL-17A-producing γδ T cells control pulmonary Mycobacterium abscessus infection in mice[J]. Nature Microbiology, 2026: 1-15.前往小宇宙评论区与主播互动
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1627-IL-17A+ γδ T 细胞拮抗脓肿分枝杆菌感染的免疫机制
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