The NLRP12 inflammasome recognizes Yersinia pestis.

The NLRP12 inflammasome recognizes Yersinia pestis.
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DOI:
10.1016/j.immuni.2012.07.006
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发表时间:
2012-07-27
期刊:
影响因子:
32.4
通讯作者:
Lien E
Lien E
中科院分区:
医学1区
文献类型:
--
作者:
Vladimer GI;Weng D;Paquette SW;Vanaja SK;Rathinam VA;Aune MH;Conlon JE;Burbage JJ;Proulx MK;Liu Q;Reed G;Mecsas JC;Iwakura Y;Bertin J;Goguen JD;Fitzgerald KA;Lien E

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Yersinia pestis, the causative agent of plague, is able to suppress production of inflammatory cytokines IL-18 and IL-1β, which are generated through caspase-1–activating nucleotide-binding domain and leucine-rich repeat (NLR)-containing inflammasomes. Here, we sought to elucidate the role of NLRs and IL-18 during plague. Lack of IL-18 signaling led to increased susceptibility to Y. pestis, producing tetra-acylated lipid A,and an attenuated strain producing a Y. pseudotuberculosis-like hexa-acylated lipid A. We found that the NLRP12 inflammasome was an important regulator controlling IL-18 and IL-1β production after Y. pestis infection, and NLRP12-deficient mice were more susceptible to bacterial challenge. NLRP12 also directed interferon-γ production via induction of IL-18, but had minimal effect on signaling to the transcription factor NF-κB._ These studies reveal a role for NLRP12 in host resistance against pathogens. Minimizing NLRP12 inflammasome activation may have been a central factor in evolution of the high virulence of Y. pestis.
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