IL-1β activation in response to Staphylococcus aureus lung infection requires inflammasome-dependent and independent mechanisms.
IL-1β activation in response to Staphylococcus aureus lung infection requires inflammasome-dependent and independent mechanisms.
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响应金黄色葡萄球菌肺部感染的IL-1β活化需要炎症体依赖和独立的机制。
DOI:
10.1002/eji.201847556
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发表时间:
2018-10
影响因子:
5.4
通讯作者:
Parker D
中科院分区:
文献类型:
--
作者:
Pires S;Parker D
Maintaining ideal and balanced levels of IL-1β is of extreme importance as a way to avoid host tissue damage. Intranasal infection of Ifnlr1−/− mice with Staphylococcus aureus led to significantly improved bacterial clearance, survival and decrease of proinflammatory cytokines in the airway including IL-1β, which was decreased by 75% (P<0.0001) and 97% (P<0.001) at 4 and 24 h after infection, respectively. Treatment of Ifnlr1−/− mice with mouse recombinant IL-1β led to increased bacterial burden in the airway and lung. Neutrophils purified from lungs of Ifnlr1−/− infected mice displayed a 50% decrease (P<0.05) in IL-1β levels compared to neutrophils isolated from WT mice. Mice lacking NLRP3 and caspase-1 had reduced IL-1β levels 4 h after infection, due to reductions or absence of active caspase-1 respectively, levels at 24 h were comparable to WT infected mice. Ifnlr1−/− infected mice had decreases in both active caspase-1 and neutrophil elastase indicating an important role for the neutrophil serine protease in IL-1β processing. By inhibiting neutrophil elastase, we were able to decrease IL-1β levels by 39% in Nlrp3−/− infected mice when compared to WT mice. These results highlight the crucial role of both proteases in IL-1β processing, via inflammasome dependent and independent mechanisms.
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影响因子:
--
作者:
Melehani, Jason H.;Duncan, Joseph A.
通讯作者:
Duncan, Joseph A.
影响因子:
13
作者:
Cohen TS;Parker D
通讯作者:
Parker D
影响因子:
7.3
作者:
Kovarik P;Castiglia V;Ivin M;Ebner F
通讯作者:
Ebner F
DOI:
10.4049/jimmunol.0900729
发表时间:
2009-09-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Muñoz-Planillo R;Franchi L;Miller LS;Núñez G
通讯作者:
Núñez G
DOI:
10.1084/jem.20140995
发表时间:
2015-06-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Blazek K;Eames HL;Weiss M;Byrne AJ;Perocheau D;Pease JE;Doyle S;McCann F;Williams RO;Udalova IA
通讯作者:
Udalova IA