Perfluoroalkyl substance pollutants activate the innate immune system through the AIM2 inflammasome.

Perfluoroalkyl substance pollutants activate the innate immune system through the AIM2 inflammasome.
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全氟烷基物质污染物通过AIM2炎症小体激活先天免疫系统

DOI:
10.1038/s41467-021-23201-0
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发表时间:
2021-05-18
影响因子:
16.6
通讯作者:
Cui J
Cui J
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wang LQ;Liu T;Yang S;Sun L;Zhao ZY;Li LY;She YC;Zheng YY;Ye XY;Bao Q;Dong GH;Li CW;Cui J

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全氟烷基物质(PFAS)广泛应用于各种制造工艺中。这些化学物质的积累对人类健康有不利影响,包括多个器官的炎症,但宿主细胞如何感知全氟辛烷磺酸,以及组织最终如何引发炎症仍不清楚。在这里,我们证明了双链DNA受体AIM2能够识别全氟辛烷磺酸(全氟辛烷磺酸),全氟辛烷磺酸是全氟辛烷磺酸的一种常见形式,从而触发IL-1β的分泌和下垂。在机制上,全氟辛烷磺酸通过钙-蛋白激酶C-核因子-κB/JNK-BAX/BAK轴激活AIM2炎症体。因此,AIM2−/−小鼠在其基础状态和哮喘加重模型中都减少了全氟辛烷磺酸引起的炎症以及肺、肝脏和肾脏的组织损伤。因此,我们的结果提示AIM2在全氟辛烷磺酸介导的组织炎症中具有功能,并确认AIM2是响应环境有机污染物的主要模式识别受体。
Perfluoroalkyl substances (PFAS) are widely used in various manufacturing processes. Accumulation of these chemicals has adverse effects on human health, including inflammation in multiple organs, yet how PFAS are sensed by host cells, and how tissue inflammation eventually incurs, is still unclear. Here, we show that the double-stranded DNA receptor AIM2 is able to recognize perfluorooctane sulfonate (PFOS), a common form of PFAS, to trigger IL-1β secretion and pyroptosis. Mechanistically, PFOS activates the AIM2 inflammasome in a process involving mitochondrial DNA release through the Ca2+-PKC-NF-κB/JNK-BAX/BAK axis. Accordingly,Aim2−/−mice have reduced PFOS-induced inflammation, as well as tissue damage in the lungs, livers, and kidneys in both their basic condition and in an asthmatic exacerbation model. Our results thus suggest a function of AIM2 in PFOS-mediated tissue inflammation, and identify AIM2 as a major pattern recognition receptor in response to the environmental organic pollutants.
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发表时间: 2016-11-11
期刊: Science (New York, N.Y.)
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