OR11-003 - The NLRP3 inflammasome is regulated by CaSR

Introduction Mutations in the gene encoding NLRP3 cause a spectrum of autoinflammatory diseases known as the cryopyrinassociated periodic syndromes (CAPS). NLRP3 is a key component of one of several distinct cytoplasmic multiprotein complexes (inflammasomes) that mediate the maturation of the proinflammatory cytokine interleukin1b (IL-1b) by activating caspase-1. Although several models for inflammasome activation, such as K efflux, generation of reactive oxygen species, and lysosomal destabilization have been proposed, the precise molecular mechanism of NLRP3 inflammasome activation, as well as the mechanism by which CAPS-associated mutations activate NLRP3, remains to be elucidated.