2012
DOI: 10.1074/jbc.m112.407130
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Non-transcriptional Priming and Deubiquitination Regulate NLRP3 Inflammasome Activation

Abstract: Background:The NLRP3 inflammasome is a critical mediator of inflammation in response to pathogens, tissue damage, and metabolic diseases. Results: Non-transcriptional priming and activation signals stimulate NLRP3 deubiquitination. Conclusion: The NLRP3 inflammasome is non-transcriptionally primed and activated by a deubiquitination mechanism. Significance: Understanding the mechanism of activation of the NLRP3 inflammasome is crucial for the development of therapeutics to alleviate NLRP3-dependent inflammator… Show more

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Cited by 652 publications
(615 citation statements)
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“…This raises the possibility of specific host protein DAMPs that are homologous with bacterial NAIP ligands, or that certain DAMPs or tissue/cellular stresses activate posttranslational mechanisms, causing activation of NLRC4. Recent work from our group and others has identified ubiquitin posttranslational modification of NLRP3 inflammasome components as a key integrator of diverse DAMP signals (35)(36)(37)(38). Interestingly, ubiquitination has also been suggested to regulate the activation of NLRC4 in a model of caspase-8-dependent cell death (39).…”
Section: Discussionmentioning
confidence: 99%
“…This raises the possibility of specific host protein DAMPs that are homologous with bacterial NAIP ligands, or that certain DAMPs or tissue/cellular stresses activate posttranslational mechanisms, causing activation of NLRC4. Recent work from our group and others has identified ubiquitin posttranslational modification of NLRP3 inflammasome components as a key integrator of diverse DAMP signals (35)(36)(37)(38). Interestingly, ubiquitination has also been suggested to regulate the activation of NLRC4 in a model of caspase-8-dependent cell death (39).…”
Section: Discussionmentioning
confidence: 99%
“…Néanmoins, ce patient était également porteur d'une autre mutation, bien caractérisée dans ce syndrome (Y570C), et sans doute responsable de la pathologie [34]. Ces résultats sont cohérents avec l'observation plus ancienne d'une déubiquitination de NLRP3 dépendant des ROS mitochondriales produites lors du priming non-transcriptionnel induit par un bref engagement de TLR4 [20]. Cependant aucune E3 ubiquitine ligase ou déubiquitinase, impliquée dans ce priming court, n'a été identifiée.…”
Section: Les Voies De Signalisation Qui Contrôlent L'assemblage De L'unclassified
“…Contrairement à celle impliquée dans le priming, elle est indépendante des ROS mitochondriales. Elle repose donc sur des voies de signalisation différentes [20]. Les domaines NACHT et LRR peuvent être ubiquitinés, et NLRP3 présente un mélange de chaînes d'ubiquitines de type K48 et K63 [38].…”
Section: Les Voies De Signalisation Qui Contrôlent L'assemblage De L'unclassified
“…Similarly, antioxidant mitoQ treatment reduces mitochondrial ROS amounts and reduces NLRP3 activation during inflammation [179]. NLRP3 deubiquitination is essential for inflammasome assembly and requires PRRs-derived ROS, while antioxidants can prevent also such regulation [180].…”
Section: Inflammationmentioning
confidence: 99%