Molecular mechanisms regulating NLRP3 inflammasome activation.
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TLDR
The NLRP3 inflammasome is linked with various human autoinflammatory and autoimmune diseases and may be a promising target for anti-inflammatory therapies, according to current understanding of the mechanisms by which it is activated in the cytosol.Abstract:
Inflammasomes are multi-protein signaling complexes that trigger the activation of inflammatory caspases and the maturation of interleukin-1β. Among various inflammasome complexes, the NLRP3 inflammasome is best characterized and has been linked with various human autoinflammatory and autoimmune diseases. Thus, the NLRP3 inflammasome may be a promising target for anti-inflammatory therapies. In this review, we summarize the current understanding of the mechanisms by which the NLRP3 inflammasome is activated in the cytosol. We also describe the binding partners of NLRP3 inflammasome complexes activating or inhibiting the inflammasome assembly. Our knowledge of the mechanisms regulating NLRP3 inflammasome signaling and how these influence inflammatory responses offers further insight into potential therapeutic strategies to treat inflammatory diseases associated with dysregulation of the NLRP3 inflammasome.read more
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References
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The inflammasome: a molecular platform triggering activation of inflammatory caspases and processing of proIL-beta.
TL;DR: In this article, the inflammasome is identified as a caspase-activating complex that comprises caspases-1, casp-5, Pycard/Asc, and NALP1, a Pyrin domain-containing protein sharing structural homology with NODs.
Journal ArticleDOI
Gout-associated uric acid crystals activate the NALP3 inflammasome
TL;DR: It is shown that MSU and CPPD engage the caspase-1-activating NALP3 (also called cryopyrin) inflammasome, resulting in the production of active interleukin (IL)-1β and IL-18 in mice deficient in the IL-1β receptor.
Journal ArticleDOI
A role for mitochondria in NLRP3 inflammasome activation
TL;DR: It is shown that mitophagy/autophagy blockade leads to the accumulation of damaged, ROS-generating mitochondria, and this in turn activates the NLRP3 inflammasome, and may explain the frequent association of mitochondrial damage with inflammatory diseases.
Journal ArticleDOI
Immunological and Inflammatory Functions of the Interleukin-1 Family
TL;DR: The IL-1 family includes members that suppress inflammation, both specifically within the IL-2 family but also nonspecifically for TLR ligands and the innate immune response.
Journal ArticleDOI
NLRP3 inflammasomes are required for atherogenesis and activated by cholesterol crystals
Peter Duewell,Hajime Kono,Katey J. Rayner,Katey J. Rayner,Cherilyn M. Sirois,Gregory I. Vladimer,Franz Bauernfeind,George S. Abela,Luigi Franchi,Guillermo Gabriel Nuñez,Max Schnurr,Terje Espevik,Egil Lien,Katherine A. Fitzgerald,Kenneth L. Rock,Kathryn J. Moore,Kathryn J. Moore,Samuel D. Wright,Veit Hornung,Eicke Latz,Eicke Latz +20 more
TL;DR: It is shown that cholesterol crystals activate the NLRP3 inflammasome in phagocytes in vitro in a process that involves phagolysosomal damage and that crystalline cholesterol acts as an endogenous danger signal and its deposition in arteries or elsewhere is an early cause rather than a late consequence of inflammation.