Thymic selection of CD8+ single positive cells with a class II major histocompatibility complex-restricted receptor.

Thymic selection of CD8+ single positive cells with a class II major histocompatibility complex-restricted receptor.
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用II类主要的组织相容性复合受体的CD8+单个阳性细胞的胸腺选择。

DOI:
10.1084/jem.180.1.25
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发表时间:
1994-07-01
影响因子:
15.3
通讯作者:
Von Boehmer, Harald
Von Boehmer, Harald
中科院分区:
医学1区
文献类型:
--
作者:
Kirberg, Joerg;Baron, Agnes;Jakob, Sylvia;Rolink, Antonius;Karjalainen, Klaus;Von Boehmer, Harald

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我们描述了表达转基因T细胞受体α/β(TCR-α/β)的小鼠,该受体对I-Ed II类主要组织相容性复合体(MHC)分子呈递的流感血凝素的肽111-119具有特异性。即使在重排缺陷或不表达内源性TCR-α基因的小鼠中,转基因TCR也在CD 4 +8-以及CD 4 -8+成熟T细胞上表达。CD 4 -8+ T细胞需要I-Ed II类MHC分子进行阳性选择,并且可以被呈递相关肽的I-Ed分子激活以增殖和杀伤。然而,这些细胞的完全成熟也需要I类MHC分子的存在。这些结果与T细胞成熟需要多种受体-配体相互作用的概念相一致,并建立了II类限制性TCR仅由成熟CD 4 +8-细胞表达的规则的例外。
We describe mice that express a transgenic T cell receptor alpha/beta (TCR-alpha/beta) specific for peptide 111-119 from influenza hemagglutinin presented by I-Ed class II major histocompatibility complex (MHC) molecules. The transgenic TCR is expressed on CD4+8- as well as CD4-8+ mature T cells even in mice that are deficient in rearrangement or do not express endogenous TCR-alpha genes. The CD4-8+ T cells require I-Ed class II MHC molecules for positive selection and can be activated to proliferate and to kill by I-Ed molecules presenting the relevant peptide. Full maturation of these cells, however, also requires the presence of class I MHC molecules. The results are compatible with the notion that T cell maturation requires multiple receptor-ligand interactions and establish an exception to the rule that class II-restricted TCRs are exclusively expressed by mature CD4+8- cells.
DOI: 10.1016/0008-8749(80)90335-4
发表时间: 1980-01-01
影响因子: 4.3
作者:
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期刊: SCIENCE
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