Abstract
The NLRP3 inflammasome is an innate immune platform that senses various pathogens and sterile insults. NLRP3 stimulation leads to activation of caspase-1, the secretion of pro-inflammatory cytokines and an inflammatory cell death called pyroptosis. Effectors of the NLRP3 inflammasome efficiently drive an immune response, not only providing protection in physiological settings but also promoting pathology when over activated. Generation of reactive oxygen species (ROS) and intracellular calcium mobilization can activate the NLRP3 inflammasome. Recent studies suggest that TRPM2 is a calcium-permeable cation channel mediating ROS-dependent NLRP3 activation. Here, we review the role of TRPM2 in NLRP3 inflammasome activation and provide an update on new functional and structural discoveries. Understanding the molecular mechanism of TRPM2 dependent NLRP3 inflammasome activation will shed lights on this complex pathway and help the developing of therapeutic strategies.
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