826-成纤维细胞NF-κB激活驱动肺部免疫衰老 episode artwork

EPISODE · Apr 20, 2026 · 22 MIN

826-成纤维细胞NF-κB激活驱动肺部免疫衰老

from 聊聊Sci

这份研究揭示了成纤维细胞在驱动免疫衰老(Inflammaging)中的核心作用,特别是在肺部组织中。随着年龄增长,成纤维细胞中的NF-κB信号通路被激活,诱导形成三级淋巴结构并招募巨噬细胞。这种微环境变化促使了一种表达颗粒酶K(GZMK+)的特殊T细胞出现,这类细胞兼具耗竭与促炎特性。实验表明,这类T细胞会显著增加老年个体对急性肺损伤和肺炎的易感性。通过干预成纤维细胞或清除GZMK+ T细胞,可以有效减轻老年肺部的过度炎症。该发现为预防和治疗老年人常见的呼吸窘迫综合征等炎症性疾病提供了全新的潜在靶点。References: Allen N C, Ringler C, Woo S H, et al. NF-κB-activated fibroblasts orchestrate inflammaging and emergence of pro-inflammatory granzyme K+ T cells[J]. Immunity, 2026.前往小宇宙评论区与主播互动

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826-成纤维细胞NF-κB激活驱动肺部免疫衰老

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