Cutting edge: CD1d restriction and Th1/Th2/Th17 cytokine secretion by human Vδ3 T cells.

Cutting edge: CD1d restriction and Th1/Th2/Th17 cytokine secretion by human Vδ3 T cells.
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DOI:
10.4049/jimmunol.1300121
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发表时间:
2013-07-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Doherty DG
Doherty DG
中科院分区:
其他
文献类型:
--
作者:
Mangan BA;Dunne MR;O'Reilly VP;Dunne PJ;Exley MA;O'Shea D;Scotet E;Hogan AE;Doherty DG

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表达Vδ3 TCR的人γδ T细胞在血液中是一个次要的淋巴细胞亚群,但在肝脏和一些慢性病毒感染和白血病患者中富集。我们分析了新鲜和扩增的外周血v δ 3t细胞的频率、表型、限制因子和功能。Vδ3 T细胞占循环T细胞的约0.2%,包括CD4+、CD8+和CD4 - CD8−亚群,表达CD56、CD161、HLA-DR和NKG2D,但不表达NKG2A和NKG2C。在IL-2的刺激下,Vδ3 T细胞被分选并扩增。扩增的Vδ3 T细胞识别CD1d,但不能识别CD1a、CD1b和CD1c。激活后,它们杀死CD1d+靶细胞,释放Th1、Th2和Th17细胞因子,诱导树突状细胞成熟为apc。因此,Vδ3 T细胞是糖脂反应性T细胞,具有不同的抗原特异性,但功能与自然杀伤T细胞相似。
Human γδ T cells expressing the Vδ3 TCR comprise a minor lymphocyte subset in blood but are enriched in liver and in patients with some chronic viral infections and leukemias. We analysed the frequencies, phenotypes, restriction elements and functions of fresh and expanded peripheral blood Vδ3 T cells. Vδ3 T cells accounted for ~0.2% of circulating T cells, included CD4+, CD8+ and CD4−CD8− subsets, and variably expressed CD56, CD161, HLA-DR and NKG2D, but not NKG2A nor NKG2C. Vδ3 T cells were sorted and expanded by mitogen stimulation in the presence of IL-2. Expanded Vδ3 T cells recognised CD1d, but not CD1a, CD1b nor CD1c. Upon activation, they killed CD1d+ target cells, released Th1, Th2 and Th17 cytokines and induced maturation of dendritic cells into APCs. Thus, Vδ3 T cells are glycolipid-reactive T cells with distinct antigen specificities but functional similarities to natural killer T cells.
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