Viral infection triggers central nervous system autoimmunity via activation of CD8+ T cells expressing dual TCRs.

Viral infection triggers central nervous system autoimmunity via activation of CD8+ T cells expressing dual TCRs.
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病毒感染通过激活表达双重 TCR 的 CD8+ T 细胞触发中枢神经系统自身免疫。

DOI:
10.1038/ni.1888
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发表时间:
2010-07
期刊:
影响因子:
30.5
通讯作者:
Goverman, Joan M.
Goverman, Joan M.
中科院分区:
医学1区
文献类型:
--
作者:
Ji, Qingyong;Perchellet, Antoine;Goverman, Joan M.

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多发性硬化症(MS)是一种由髓磷脂特异性T细胞介导的炎症性、脱髓鞘性中枢神经系统疾病。导致髓磷脂特异性T细胞耐受性崩溃的环境触发因素尚不清楚。我们发现CD8+髓鞘碱性蛋白(MBP)特异性T细胞耐受性可以被破坏,并通过不表达MBP交叉反应表位的病毒感染诱导自身免疫,并且不依赖于旁观者激活。相反,病毒激活了双T细胞受体(TCR)-表达能够识别MBP和病毒抗原的T细胞。这些结果证明了双TCR T细胞在自身免疫中的重要性,并提示了一种机制,通过这种机制,一种无处不在的病毒感染可以触发一部分受感染个体的自身免疫,正如MS病因学中假设的那样。
Multiple sclerosis (MS) is an inflammatory, demyelinating, central nervous system disease mediated by myelin-specific T cells. Environmental triggers that cause a breakdown of myelin-specific T cell tolerance are unknown. We found that CD8+ myelin basic protein (MBP)-specific T cell tolerance can be broken and autoimmunity induced by infection with a virus that does not express MBP cross-reactive epitopes and does not depend on bystander activation. Instead, the virus activated dual T cell receptor (TCR)-expressing T cells capable of recognizing both MBP and viral antigens. These results demonstrate the importance of dual TCR T cells in autoimmunity and suggest a mechanism by which a ubiquitous viral infection could trigger autoimmunity in a subset of infected individuals, as hypothesized in the etiology of MS.
DOI: 10.1016/0092-8674(94)90419-7
发表时间: 1994-08-12
期刊: CELL
影响因子: 64.5
作者:
LAFAILLE, JJ;NAGASHIMA, K;TONEGAWA, S
通讯作者: TONEGAWA, S
人T淋巴细胞上的双T细胞受体β链表达。
DOI: 10.1084/jem.181.4.1391
发表时间: 1995-04-01
影响因子: 15.3
作者:
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通讯作者: Bonneville, Marc
DOI: 10.1212/wnl.30.7_part_2.80
发表时间: 1980-01-01
期刊: NEUROLOGY
影响因子: 9.9
作者:
COOK, SD;DOWLING, PC
通讯作者: DOWLING, PC
DOI: 10.1084/jem.182.4.953
发表时间: 1995-10-01
影响因子: 15.3
作者:
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DOI: 10.1016/s1074-7613(00)80562-2
发表时间: 1998-05-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Harrington, CJ;Paez, A;Goverman, J
通讯作者: Goverman, J