Inflammatory monocytes activate memory CD8(+) T and innate NK lymphocytes independent of cognate antigen during microbial pathogen invasion.

Inflammatory monocytes activate memory CD8(+) T and innate NK lymphocytes independent of cognate antigen during microbial pathogen invasion.
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炎症单核细胞激活记忆CD8(+)T和先天NK淋巴细胞在微生物病原体入侵期间独立于同源抗原。

DOI:
10.1016/j.immuni.2012.05.029
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发表时间:
2012-09-21
期刊:
影响因子:
32.4
通讯作者:
Lauvau G
Lauvau G
中科院分区:
医学1区
文献类型:
--
作者:
Soudja SM;Ruiz AL;Marie JC;Lauvau G

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免疫后诱导的记忆CD8+T细胞表现出更好的功能特性,有助于保护免疫宿主。虽然同源抗原识别和炎症对记忆CD8+T细胞的重新激活都很重要,但这些因素的相对贡献以及体内提供这些信号的细胞类型尚不清楚。在这里,我们发现,Ly6C+CCR2+炎性单核细胞是单核细胞的一个亚群,主要通过分化为产生白介素18(IL-18)和IL-15的细胞,以炎症体和I型干扰素-IRF3依赖的方式,在很大程度上协调记忆CD8+T和NK淋巴细胞的激活。记忆CD8+T细胞通过感知单核细胞的炎症而成为有效的效应细胞,而不依赖于它们的同源抗原。像NK细胞一样,它们在细菌、病毒和寄生虫感染时经历了快速动员,上调了强烈和持续的效应功能,并在体内参与了先天反应和保护。因此,炎性单核细胞来源的IL-18和IL-15在启动记忆性CD8+T和NK淋巴细胞分化为抗微生物效应细胞方面起着关键作用。
Memory CD8+ T cells induced upon immunization exhibit improved functional features that contribute to protection of immunized hosts. Although both cognate antigen recognition and inflammation are important for memory CD8+ T cell reactivation, the relative contribution of these factors and the cell types providing these signals in vivo are poorly defined. Here, we show that Ly6C+CCR2+ inflammatory monocytes, a subset of monocytes, largely orchestrate memory CD8+ T and NK lymphocytes activation by differentiating into interleukin-18 (IL-18)- and IL-15-producing cells in an inflammasome and type I interferon-IRF3-dependent manner. Memory CD8+ T cells became potent effector cells by sensing inflammation from monocytes independently of their cognate antigen. Like NK cells, they underwent rapid mobilization, upregulated intense and sustained effector functions during bacterial, viral and parasitic infections, and contributed to innate responses and protection in vivo. Thus, inflammatory monocyte-derived IL-18 and IL-15 are critical to initiate memory CD8+ T and NK lymphocytes differentiation into antimicrobial effector cells.
DOI: 10.1016/j.chom.2009.10.007
发表时间: 2009-11-19
影响因子: 30.3
作者:
Hohl TM;Rivera A;Lipuma L;Gallegos A;Shi C;Mack M;Pamer EG
通讯作者: Pamer EG
DOI: 10.1084/jem.20031051
发表时间: 2003-11-17
期刊: The Journal of experimental medicine
影响因子: --
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DOI: 10.4049/jimmunol.180.12.7859
发表时间: 2008-06-15
影响因子: 4.4
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发表时间: 2002-08-01
期刊: IMMUNITY
影响因子: 32.4
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Jung, S;Unutmaz, D;Lang, RA
通讯作者: Lang, RA
DOI: 10.1016/j.immuni.2009.09.017
发表时间: 2009-11-20
期刊: IMMUNITY
影响因子: 32.4
作者:
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通讯作者: Ma, Averil