CLEC5A is a critical receptor in innate immunity against Listeria infection.

CLEC5A is a critical receptor in innate immunity against Listeria infection.
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CLEC5A 是针对李斯特菌感染的先天免疫的关键受体。

DOI:
10.1038/s41467-017-00356-3
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发表时间:
2017-08-21
影响因子:
16.6
通讯作者:
Hsieh SL
Hsieh SL
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Chen ST;Li FJ;Hsu TY;Liang SM;Yeh YC;Liao WY;Chou TY;Chen NJ;Hsiao M;Yang WB;Hsieh SL

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C型凝集素成员5A(CLEC 5A)是黄病毒家族成员的模式识别受体,并且在应答登革病毒和日本脑炎病毒中具有关键功能。在这里,我们表明CLEC 5A参与中性粒细胞胞外陷阱的形成和反应性氧和促炎细胞因子的产生,以响应单核细胞增生李斯特菌。Clec 5a −/−小鼠接种L.单核细胞增多症导致细菌快速传播、血液和肝脏中细菌负荷增加以及严重的肝坏死。在这些小鼠中,IL-1β、IL-17 A和TNF表达被抑制,CCL 2被诱导,大量CD 11b + Ly 6ChiCCR 2 hiCX 3CR 1 low炎性单核细胞浸润肝脏。到感染第5天,这些小鼠的IL-17 A + γδ T细胞也更少,肝坏死严重,死亡率更高。因此,CLEC 5A在激活针对细菌入侵的先天免疫的多个方面中具有关键功能。凝集素受体CLEC 5A是一种模式识别受体,已被证明可以检测登革热和日本脑炎病毒。在这里,作者表明CLEC 5A是小鼠中最佳ROS产生,NET形成和对单核细胞增生李斯特菌的其他免疫反应所必需的。
The C-type lectin member 5A (CLEC5A) is a pattern recognition receptor for members of the Flavivirus family and has critical functions in response to dengue virus and Japanese encephalitis virus. Here we show that CLEC5A is involved in neutrophil extracellular trap formation and the production of reactive oxygen species and proinflammatory cytokines in response to Listeria monocytogenes. Inoculation of Clec5a −/− mice with L. monocytogenes causes rapid bacterial spreading, increased bacterial loads in the blood and liver, and severe liver necrosis. In these mice, IL-1β, IL-17A, and TNF expression is inhibited, CCL2 is induced, and large numbers of CD11b+Ly6ChiCCR2hiCX3CR1low inflammatory monocytes infiltrate the liver. By day 5 of infection, these mice also have fewer IL-17A+ γδ T cells, severe liver necrosis and a higher chance of fatality. Thus, CLEC5A has a pivotal function in the activation of multiple aspects of innate immunity against bacterial invasion. The lectin receptor CLEC5A is a pattern recognition receptor that has been shown to detect dengue and Japanese encephalitis virus. Here the authors show that CLEC5A is needed for optimal ROS production, NET formation and other immune responses to Listeria monocytogenes in mice.
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