The H7N9 influenza A virus infection results in lethal inflammation in the mammalian host via the NLRP3-caspase-1 inflammasome.

The H7N9 influenza A virus infection results in lethal inflammation in the mammalian host via the NLRP3-caspase-1 inflammasome.
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H7N9 甲型流感病毒感染通过 NLRP3-caspase-1 炎症小体导致哺乳动物宿主致命炎症

DOI:
10.1038/s41598-017-07384-5
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发表时间:
2017-08-08
期刊:
影响因子:
4.6
通讯作者:
Meng G
Meng G
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ren R;Wu S;Cai J;Yang Y;Ren X;Feng Y;Chen L;Qin B;Xu C;Yang H;Song Z;Tian D;Hu Y;Zhou X;Meng G

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禽源性甲型流感病毒(IAV)H7N9自2013年出现以来,已造成相当数量的人感染,死亡率高。作为宿主天然免疫系统的重要组成部分,含核甘酸结合域的富含亮氨酸重复序列的受体,含pyrin结构域的3(NLRP 3)炎性体在抗H1N1病毒感染中起着关键作用。然而,NLRP 3炎性体在宿主对致死性H7N9病毒的免疫应答中的功能仍然不清楚。在这里,我们证明了缺乏NLRP 3炎性体组分的小鼠,包括NLRP 3,caspase-1和含有CARD的凋亡相关斑点样蛋白(ASC),对H7N9病毒攻击的敏感性低于野生型(WT)对照。与WT小鼠相比,这些动物中的炎性体缺陷导致显著更轻的死亡率和更少的肺部炎症。此外,IL-1受体缺陷型小鼠也表现出比WT对照更高的存活率。因此,我们的研究揭示了NLRP 3炎性小体在小鼠中H7N9感染期间对宿主是有害的,这是由于通过半胱天冬酶-1活化和相关的IL-1信号的压倒性炎症反应。因此,微调NLRP 3炎性体或IL-1信号传导的活性可能有利于宿主控制H7 N9相关的致死性发病机制。
The avian origin influenza A virus (IAV) H7N9 has caused a considerable number of human infections associated with high rates of death since its emergence in 2013. As a vital component of the host innate immune system, the nucleotide-binding domain leucine-rich repeat containing receptor, pyrin domain containing 3 (NLRP3) inflammasome plays a critical role against H1N1 viral infection. However, the function of NLRP3 inflammasome in host immunological responses to the lethal H7N9 virus is still obscure. Here, we demonstrated that mice deficient for NLRP3 inflammasome components, including NLRP3, caspase-1, and Apoptosis-associated speck-like protein containing a CARD (ASC), were less susceptible to H7N9 viral challenge than wild type (WT) controls. Inflammasome deficiency in these animals led to significantly milder mortality and less pulmonary inflammation compared with WT mice. Furthermore, IL-1 receptor deficient mice also exhibited a higher survival rate than WT controls. Thus, our study reveals that the NLRP3 inflammasome is deleterious for the host during H7N9 infection in mice, which is due to an overwhelming inflammatory response via caspase-1 activation and associated IL-1 signal. Therefore, fine-tuning the activity of NLRP3 inflammasome or IL-1 signaling may be beneficial for the host to control H7N9 associated lethal pathogenesis.
DOI: 10.1038/nri3665
发表时间: 2014-05
期刊: Nature reviews. Immunology
影响因子: --
作者:
通讯作者: --
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DOI: 10.1056/nejmoa1304459
发表时间: 2013-05-16
影响因子: 158.5
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通讯作者: Shu, Yuelong
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DOI: 10.1016/s0140-6736(13)61125-3
发表时间: 2013-06-29
期刊: LANCET
影响因子: 168.9
作者:
Hu, Yunwen;Lu, Shuihua;Yuan, Zhenghong
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DOI: 10.1016/j.biocel.2003.10.019
发表时间: 2004-10-01
影响因子: 4
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Maurer, M;von Stebut, E
通讯作者: von Stebut, E
DOI: 10.1093/infdis/jit440
发表时间: 2013-12-15
影响因子: 6.4
作者:
Chi, Ying;Zhu, Yefei;Zhou, Minghao
通讯作者: Zhou, Minghao