NACHT, LRR and PYD domains-containing protein 3 inflammasome (NLRP3 inflammasome) (NLRP3 inflammasome)

The NACHT, LRR and PYD domains-containing protein 3 (NLRP3) inflammasome is a cytosolic multiprotein complex that serves as a critical component of the innate immune system [1]. It functions as a sensor for a diverse array of pathogen-associated and danger-associated molecular patterns, including extracellular ATP, uric acid crystals, and certain bacterial toxins [2]. Upon activation, the NLRP3 protein oligomerizes and recruits the adapter protein ASC and the protease pro-caspase-1, forming the active inflammasome complex [3]. This assembly facilitates the proteolytic cleavage of pro-caspase-1 into its active form, which subsequently processes the precursors of the potent pro-inflammatory cytokines interleukin-1 beta (IL-1β) and interleukin-18 (IL-18) into their mature, bioactive states [4]. Dysregulation of this pathway, leading to chronic IL-1β production, is a key driver in the pathogenesis of various inflammatory and metabolic diseases, such as gout, atherosclerosis, and type 2 diabetes [5]. Therapeutic interventions targeting this axis include monoclonal antibodies that neutralize IL-1β, such as canakinumab, and small-molecule inhibitors designed to prevent the assembly of the NLRP3 complex itself [6].

Other names

CryopyrinCIAS1PYPAF1NALP3Interleukin-1 betaIL-1BCaspase-1 recruitment domain-containing protein 7

Inhibition of the NLRP3 inflammasome complex assembly and activation, or neutralization of the downstream pro-inflammatory cytokine Interleukin-1 beta.