The human Vδ2(+) T-cell compartment comprises distinct innate-like Vγ9(+) and adaptive Vγ9(-) subsets.

The human Vδ2(+) T-cell compartment comprises distinct innate-like Vγ9(+) and adaptive Vγ9(-) subsets.
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DOI:
10.1038/s41467-018-04076-0
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发表时间:
2018-05-02
影响因子:
16.6
通讯作者:
Willcox BE
Willcox BE
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Davey MS;Willcox CR;Hunter S;Kasatskaya SA;Remmerswaal EBM;Salim M;Mohammed F;Bemelman FJ;Chudakov DM;Oo YH;Willcox BE

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Vδ2+ T 细胞形成外周血中主要的人类 γδ T 细胞群,并介导 T 细胞受体 (TCR) 依赖性抗微生物和抗肿瘤免疫。在这里,我们表明 Vδ2+ 区室包含先天性子集和适应性子集。 Vγ9+ Vδ2+ T 细胞显示出半不变的 TCR 库,具有与脐带血和成人血液中等效的公共 Vγ9 TCR 序列。相比之下,我们还鉴定了一个单独的 Vγ9−Vδ2+ T 细胞亚群,通常具有 CD27hiCCR7+CD28+IL-7Rα+ 幼稚样表型和多样化的 TCR 库,然而,响应病毒感染,经历克隆扩增和分化为 CD27loCD45RA+CX3CR1+ 粒酶 A/B+ 效应表型。与实体组织免疫监视的功能一致,我们检测到具有显性克隆扩张和效应表型的人肝内 Vγ9− Vδ2+ T 细胞。这些发现通过将 Vδ2+ T 细胞区室划分为先天性 (Vγ9+) 和适应性 (Vγ9−) 子集,重新定义了人类 γδ T 细胞子集,这些子集在微生物免疫监视中具有不同的功能。人类 Vδ2+ γδ T 细胞被认为是先天性 T 细胞群。在这里,作者展示了 Vδ2+ 区室包含先天性 Vγ9+ 和适应性 Vγ9- 子集,该子集在病毒感染期间经历克隆扩张并可以渗透肝组织。
Vδ2+ T cells form the predominant human γδ T-cell population in peripheral blood and mediate T-cell receptor (TCR)-dependent anti-microbial and anti-tumour immunity. Here we show that the Vδ2+ compartment comprises both innate-like and adaptive subsets. Vγ9+ Vδ2+ T cells display semi-invariant TCR repertoires, featuring public Vγ9 TCR sequences equivalent in cord and adult blood. By contrast, we also identify a separate, Vγ9− Vδ2+ T-cell subset that typically has a CD27hiCCR7+CD28+IL-7Rα+ naive-like phenotype and a diverse TCR repertoire, however in response to viral infection, undergoes clonal expansion and differentiation to a CD27loCD45RA+CX3CR1+granzymeA/B+ effector phenotype. Consistent with a function in solid tissue immunosurveillance, we detect human intrahepatic Vγ9− Vδ2+ T cells featuring dominant clonal expansions and an effector phenotype. These findings redefine human γδ T-cell subsets by delineating the Vδ2+ T-cell compartment into innate-like (Vγ9+) and adaptive (Vγ9−) subsets, which have distinct functions in microbial immunosurveillance. Human Vδ2+ γδ T cells are thought to be an innate-like T-cell population. Here the authors show the Vδ2+ compartment contains both innate-like Vγ9+ and an adaptive Vγ9- subset that undergoes clonal expansion during viral infection and can infiltrate liver tissue.
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发表时间: 2017-03-01
影响因子: 16.6
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发表时间: 1993-04-01
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