Positive selection of CD4+ thymocytes controlled by MHC class II gene products

Positive selection of CD4+ thymocytes controlled by MHC class II gene products
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由 MHC II 类基因产物控制的 CD4 胸腺细胞的阳性选择

DOI:
10.1038/336471a0
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发表时间:
1988
期刊:
影响因子:
64.8
通讯作者:
H. Hengartner
H. Hengartner
中科院分区:
综合性期刊1区
文献类型:
--
作者:
H. Macdonald;R. Lees;R. Schneider;R. Zinkernagel;H. Hengartner

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成熟T细胞抗原受体库的特征在于缺乏对自身组分的反应性以及在主要组织相容性复合体1内编码的多态性自身蛋白的背景下对外来抗原的优先反应性。前一种特征(称为阴性选择或耐受性)与表达T细胞抗原受体β链可变结构域的T细胞的胸腺内缺失相关,其赋予对自身抗原的优先反应性2 -4,后者的存在(称为阳性选择或MHC限制)迄今为止仅从功能研究中间接推断5 -8。我们在这里表明,V+ β 6 T细胞(与Mls a基因座编码的自身抗原反应)的胸腺内缺失是由多态性MHC II类决定簇控制的。此外,在缺乏Mls * 表达的小鼠中,相同的II类MHC基因座控制成熟CD 4 + T淋巴细胞中V+ β 6细胞的出现频率。这些数据是直接的证据,在未经操作的动物胸腺中的MHC决定簇的积极选择。
The mature T-cell antigen receptor repertoire is characterized by lack of reactivity to self-components as well as by preferential reactivity to foreign antigens in the context of polymorphic self-proteins encoded within the major histocompatibility complex1. Whereas the former characteristic (referred to as negative selection or tolerance) is associated with intrathymic deletion of T cells expressing T-cell antigen receptor β-chain variable domains, which confer a preferential reactivity to self antigens2–4, the existence of the latter (referred to as positive selection or MHC restriction) has so far only been inferred indirectly from functional studies5–8. We show here that intrathymic deletion of V+ β6T cells (reactive with a self-antigen encoded by the Mls a locus) is control-led by polymorphic MHC class II determinants. Furthermore, in mice lacking expression of Mls *, the same class II MHC loci control the frequency of occurrence of V+ β6cells among mature CD4+ T lymphocytes. These data are direct evidence for positive selection by MHC determinants in the thymus in unmanipulated animals.
DOI: 10.1016/0022-1759(84)90477-0
发表时间: 1984-01-01
影响因子: 2.2
作者:
LANDEGREN, U
通讯作者: LANDEGREN, U
小鼠胸腺中辅助 T 细胞前体的发育。
DOI: --
发表时间: 1988
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Marrack,P;Kushnir,E;Born,W;McDuffie,M;Kappler,J
通讯作者: Kappler,J
DOI: --
发表时间: 1985
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
JanewayJr,CA;Katz,ME
通讯作者: Katz,ME