The inflammasome: a caspase-1-activation platform that regulates immune responses and disease pathogenesis

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Abstract
The inflammasome is a multiprotein complex that mediates the activation of caspase-1, which promotes secretion of the proinflammatory cytokines interleukin 1β (IL-1β) and IL-18, as well as 'pyroptosis', a form of cell death induced by bacterial pathogens. Members of the Nod-like receptor family, including NLRP1, NLRP3 and NLRC4, and the adaptor ASC are critical components of the inflammasome that link microbial and endogenous 'danger' signals to caspase-1 activation. Several diseases are associated with dysregulated activation of caspase-1 and secretion of IL-1β. Thus, understanding inflammasome pathways may provide insight into disease pathogenesis that might identify potential targets for therapeutic intervention.