Mitochondrial cardiolipin is required for Nlrp3 inflammasome activation.

Mitochondrial cardiolipin is required for Nlrp3 inflammasome activation.
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DOI:
10.1016/j.immuni.2013.08.001
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发表时间:
2013-08-22
期刊:
影响因子:
32.4
通讯作者:
Sutterwala FS
Sutterwala FS
中科院分区:
医学1区
文献类型:
--
作者:
Iyer SS;He Q;Janczy JR;Elliott EI;Zhong Z;Olivier AK;Sadler JJ;Knepper-Adrian V;Han R;Qiao L;Eisenbarth SC;Nauseef WM;Cassel SL;Sutterwala FS

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Nlrp3 inflammasome activation occurs in response to numerous agonists but the specific mechanism by which this takes place remains unclear. All previously evaluated activators of the Nlrp3 inflammasome induce the generation of mitochondrial reactive oxygen species (ROS), suggesting a model in which ROS is a required upstream mediator of Nlrp3 inflammasome activation. Here we have identified the oxazolidinone antibiotic, linezolid, as a Nlrp3 agonist that activates the Nlrp3 inflammasome independently of ROS. The pathways for ROS-dependent and ROS-independent Nlrp3 activation converged upon mitochondrial dysfunction and specifically the mitochondrial lipid cardiolipin. Cardiolipin bound to Nlrp3 directly and interference with cardiolipin synthesis specifically inhibited Nlrp3 inflammasome activation. Together these data suggest that mitochondria play a critical role in the activation of the Nlrp3 inflammasome through the direct binding of Nlrp3 to cardiolipin.
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