566-人类结核病肉芽肿的免疫调节图谱

这项研究利用多路离子束成像（MIBI-TOF）技术，对人类结核分枝杆菌感染形成的肉芽肿进行了深入的空间分析。研究揭示了肉芽肿内部高度有序的免疫微环境，特别是发现了由调节性髓系细胞和调节性T细胞共同构成的免疫抑制生态位。通过对比结核病与结节病，科学家识别出结核病特有的免疫调节特征，如PD-L1和IDO1的高表达，而这些特征在常规模型中难以模拟。此外，研究证实血液中的PD-L1表达量不仅与肺部炎症程度相关，还能有效预测疾病从潜伏期向活动期的转化。这些发现揭示了局部组织结构如何驱动免疫逃逸，为开发宿主导向的新型结核病疗法提供了关键的理论依据。References: McCaffrey, E.F., Donato, M., Keren, L. et al. The immunoregulatory landscape of human tuberculosis granulomas. Nat Immunol 23, 318–329 (2022). doi.org前往小宇宙评论区与主播互动

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566-人类结核病肉芽肿的免疫调节图谱

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