Regulator T Cells: Specific for Antigen and/or Antigen Receptors?

Regulator T Cells: Specific for Antigen and/or Antigen Receptors?
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调节 T 细胞:对抗原和/或抗原受体具有特异性?

DOI:
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发表时间:
2003
影响因子:
3.7
通讯作者:
Eli E. Sercarz
Eli E. Sercarz
中科院分区:
医学4区
文献类型:
--
作者:
B. Rubin;Y. D. D. Durana;N. Li;Eli E. Sercarz

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适应性免疫应答受许多不同的分子和细胞效应物调节。调节性T细胞再次获得了它们的权利,这些T细胞似乎具有普通的α/β T细胞受体(TCR)并在胸腺中发育。自身免疫应答受到这种调节性T细胞的严格调节,这是一种在自身免疫情况下对宿主有益的现象。然而,对肿瘤细胞的自身免疫反应的调节对宿主是有害的,因为这种调节延迟了对新生细胞生长的防御。在本综述中,我们讨论了调节性T细胞是否对抗原和/或抗原受体具有特异性。我们对这些现象的兴趣来自于T细胞产生的TCR-α和TCR-β链比TCR-αβ异二聚体与CD 3复合物的表面膜表达所需的多得多的发现。过量的TCR链被蛋白酶体降解,TCR肽因此可用于主要组织相容性复合物I类分子的组装途径。因此,T细胞是否在细胞膜上表达两种不同的识别标志物,即用于B细胞受体识别的TCR-αβ克隆型和用于T细胞识别的克隆型TCR-αβ肽?
Adaptive immune responses are regulated by many different molecular and cellular effectors. Regulator T cells are coming to their rights again, and these T cells seem to have ordinary α/β T‐cell receptors (TCRs) and to develop in the thymus. Autoimmune responses are tightly regulated by such regulatory T cells, a phenomenon which is beneficial to the host in autoimmune situations. However, the regulation of autoimmune responses to tumour cells is harmful to the host, as this regulation delays the defence against the outgrowth of neoblastic cells. In the present review, we discuss whether regulatory T cells are specific for antigen and/or for antigen receptors. Our interest in these phenomena comes from the findings that T cells produce many more TCR‐α and TCR‐β chains than are necessary for surface membrane expression of TCR‐αβ heterodimers with CD3 complexes. Excess TCR chains are degraded by the proteasomes, and TCR peptides thus become available to the assembly pathway of major histocompatibility complex class I molecules. Consequently, do T cells express two different identification markers on the cell membrane, the TCR‐αβ clonotype for recognition by B‐cell receptors and clonotypic TCR‐αβ peptides for recognition by T cells?
遗传易感小鼠的泰勒病毒感染会诱导中枢神经系统浸润 CTL,但没有明显的病毒或主要髓磷脂抗原特异性。
DOI: --
发表时间: 1998
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Lin,X;Pease,LR;Murray,PD;Rodriguez,M
通讯作者: Rodriguez,M
DOI: 10.1126/science.8418501
发表时间: 1993-01-01
期刊: SCIENCE
影响因子: 56.9
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DOI: 10.1093/intimm/11.3.307
发表时间: 1999
影响因子: 4.4
作者:
Sun,D;Whitaker,JN;Wilson,DB
通讯作者: Wilson,DB
自身抗体转基因小鼠的 B 和 T 细胞耐受性和自身免疫。
DOI: 10.1093/intimm/dxf064
发表时间: 2002
影响因子: 4.4
作者:
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通讯作者: Mamula,MarkJ