Rapid on/off cycling of cytokine production by virus-specific CD8+ T cells

Rapid on/off cycling of cytokine production by virus-specific CD8+ T cells
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病毒特异性 CD8 T 细胞产生细胞因子的快速开/关循环

DOI:
10.1038/43454
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发表时间:
1999
期刊:
影响因子:
64.8
通讯作者:
J. Whitton
J. Whitton
中科院分区:
综合性期刊1区
文献类型:
--
作者:
M. Slifka;F. Rodríguez;J. Whitton

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CD8 阳性 T 细胞通过两种重要机制保护身体免受病毒病原体的侵害:产生抗病毒细胞因子和裂解受感染的细胞。细胞因子的产生可能会产生局部和全身的后果,而细胞溶解活性仅限于与 T 细胞直接接触的受感染细胞。在这里,我们分析了感染淋巴细胞性脉络膜脑膜炎病毒的小鼠的活化CD8阳性T细胞,发现在没有肽刺激的情况下,细胞因子不会离体产生,但在T细胞遇到与主要组织相容性复合物结合的病毒肽后,它们会迅速产生。值得注意的是,T 细胞从其靶标解离后,细胞因子的产生立即停止,并在抗原接触恢复时恢复。与细胞因子的“开/关/开”循环相反,成孔细胞毒性蛋白穿孔素是组成型维持的。我们的结果表明,根据抗病毒产物是分泌的(如细胞因子)还是储存在细胞内(如穿孔素),效应分子的表达存在差异。在维持穿孔素细胞内储存的同时打开和关闭细胞因子的能力显示了细胞免疫反应的多功能性,并提供了维持有效免疫监视同时减少全身免疫病理的机制。
CD8-positive T cells protect the body against viral pathogens by two important mechanisms: production of antiviral cytokines and lysis of infected cells. Cytokine production can have both local and systemic consequences, whereas cytolytic activity is limited to infected cells that are in direct contact with T cells. Here we analyse activated CD8-positive T cells from mice infected with lymphocytic choriomeningitis virus and find that cytokines are not produced ex vivo in the absence of peptide stimulation, but that they are rapidly generated after T cells encounter viral peptides bound to the major histocompatibility complex. Remarkably, cytokine production ceases immediately upon dissociation of the T cells from their targets and resumes when antigenic contact is restored. In contrast to the ‘on/off/on’ cycling of cytokines, the pore-forming cytotoxic protein perforin is constitutively maintained. Our results indicate that there is differential expression of effector molecules according to whether the antiviral product is secreted (like cytokines) or stored inside the cell (like perforin). The ability to turn cytokines on and off while maintaining intracellular stores of perforin shows the versatility of the cellular immune response and provides a mechanism for maintaining effective immune surveillance while reducing systemic immunopathology.
在个体活细胞中研究抗原呈递和细胞毒性 T 淋巴细胞杀伤。
DOI: 10.1006/viro.1994.1298
发表时间: 1994
期刊: Virology
影响因子: 3.7
作者:
Hahn,K;DeBiasio,R;Tishon,A;Lewicki,H;Gairin,JE;LaRocca,G;Taylor,DL;Oldstone,M
通讯作者: Oldstone,M
DOI: 10.1016/s1074-7613(00)80470-7
发表时间: 1998-02-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Murali-Krishna, K;Altman, JD;Ahmed, R
通讯作者: Ahmed, R
DOI: 10.1073/pnas.91.23.10854
发表时间: 1994-11-08
影响因子: 11.1
作者:
WALSH, CM;MATLOUBIAN, M;CLARK, WR
通讯作者: CLARK, WR
DOI: 10.1016/s1074-7613(00)80469-0
发表时间: 1998-02-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Butz, EA;Bevan, MJ
通讯作者: Bevan, MJ
DOI: 10.1016/s1074-7613(00)80573-7
发表时间: 1998-06-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Flynn, KJ;Belz, GT;Doherty, PC
通讯作者: Doherty, PC