1469-小鼠 Vδ7+ γδT 细胞的发育与稳态 episode artwork

EPISODE · Aug 21, 2026 · 28 MIN

1469-小鼠 Vδ7+ γδT 细胞的发育与稳态

from 聊聊Sci

这项研究揭示了IL17RA(白细胞介素17受体A)在免疫系统中扮演的第二重角色:它不仅是细胞因子受体,还是Vδ7+ γδT细胞的直接配体。研究人员通过cDNA筛选发现,IL17RA能与小鼠体内这类特定的T细胞受体结合,且这种相互作用主要取决于Vδ7链的生殖系编码序列,而非高度多变的CDR3区域。实验表明,这种识别机制驱动了外周淋巴器官中大规模TH1样效应子子集的胸腺选择、功能成熟以及稳态增殖。由于该过程不需要特定的抗原特异性结构,它被归类为一种非克隆型相互作用,类似于丁酰亲和素家族对免疫系统的调节。这些成果不仅破解了长期以来关于γδT细胞抗原识别的部分谜团,还证明了非克隆型配体在塑造机体适应性免疫布局中具有普遍意义。References:Ye K, Francis N, Dunst J, et al. Direct interaction of Vδ7 TCRs with IL17RA drives the differentiation of TH1-like γδT cells[J]. Science, 2026, 393(6808): eadx9264.前往小宇宙评论区与主播互动

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1469-小鼠 Vδ7+ γδT 细胞的发育与稳态

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