B cell-derived IL-27 promotes control of persistent LCMV infection.

B cell-derived IL-27 promotes control of persistent LCMV infection.
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B细胞衍生的IL-27促进持续LCMV感染的控制。

DOI:
10.1073/pnas.2116741119
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发表时间:
2022-01-18
影响因子:
11.1
通讯作者:
Teijaro JR
Teijaro JR
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Pratumchai I;Zak J;Huang Z;Min B;Oldstone MBA;Teijaro JR

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持续的病毒感染仍然是全球发病率和死亡率的主要来源。利用淋巴细胞性脉络丛脑膜炎病毒(LCMV)的持续克隆进行的研究表明,除了T细胞和B细胞的最佳功能和相互作用外,细胞因子的产生对于促进感染的长期控制至关重要。在这里,我们报道B细胞是持续LCMV感染过程中IL-27不可缺少的来源。B细胞衍生的IL-27通过支持病毒特异性CD8和CD4 T细胞的积累来促进病毒控制。在感染后期,B细胞来源的IL-27分别通过病毒特异性CD4 T和Tfh细胞促进IFN-γ和IL-21的产生。我们的研究揭示了B细胞分泌的细胞因子在控制持续性感染中的关键作用。最近的研究已经确定了B细胞产生的细胞因子在调节体液和细胞免疫中的关键作用。本研究表明,在持续性淋巴细胞性脉络丛脑膜炎病毒(LCMV)克隆13 (Cl-13)感染过程中,B细胞是白细胞介素-27 (IL-27)的重要来源。通过在B细胞中特异性缺失IL-27p28的条件敲除小鼠模型,我们观察到B细胞来源的IL-27促进病毒特异性CD4 T细胞的存活并支持T滤泡辅助细胞(Tfh)的功能。从机制上讲,B细胞来源的IL-27促进CD4 T细胞功能、抗体类别转换和控制持久性LCMV感染的能力。T细胞中IL-27ra的缺失表明,在持续LCMV感染期间,T细胞内的IL-27R信号对于病毒控制、最佳CD4 T细胞反应和抗体类型转换至关重要。总之,我们的研究结果确定了一种细胞机制,即B细胞来源的IL-27通过T细胞上的IL-27信号传导驱动抗病毒免疫和抗体反应,以促进LCMV Cl-13感染的控制。
Persistent viral infection remains a major source of global morbidity and mortality. Studies using a persistent clone of lymphocytic choriomeningitis virus (LCMV) revealed that in addition to optimal functions and interactions of T and B cells, production of cytokines is essential in promoting long-term control of infection. Here we report that B cells are an indispensable source of IL-27 during persistent LCMV infection. B cell–derived IL-27 promotes viral control via supporting accumulations of virus-specific CD8 and CD4 T cells. During later stages of infection, B cell–derived IL-27 promotes production of IFN-γ and IL-21 by virus-specific CD4 T and Tfh cells, respectively. Our study unveils the critical role of a B cell–secreted cytokine in controlling a persistent infection. Recent studies have identified a critical role for B cell–produced cytokines in regulating both humoral and cellular immunity. Here, we show that B cells are an essential source of interleukin-27 (IL-27) during persistent lymphocytic choriomeningitis virus (LCMV) clone 13 (Cl-13) infection. By using conditional knockout mouse models with specific IL-27p28 deletion in B cells, we observed that B cell–derived IL-27 promotes survival of virus-specific CD4 T cells and supports functions of T follicular helper (Tfh) cells. Mechanistically, B cell–derived IL-27 promotes CD4 T cell function, antibody class switch, and the ability to control persistent LCMV infection. Deletion of IL-27ra in T cells demonstrated that T cell–intrinsic IL-27R signaling is essential for viral control, optimal CD4 T cell responses, and antibody class switch during persistent LCMV infection. Collectively, our findings identify a cellular mechanism whereby B cell–derived IL-27 drives antiviral immunity and antibody responses through IL-27 signaling on T cells to promote control of LCMV Cl-13 infection.
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发表时间: 2012-07-02
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