IKKβ is required for the formation of the NLRP3 inflammasome.

ABSTRACT: The rapid formation and activation of the NLRP3 inflammasome is induced by co-stimulation with LPS and nigericin. It requires the LPS-stimulated activation of IKKβ, which exerts its effects independently of de novo gene transcription, protein translation and other protein kinases activated by IKKβ. IKKβ is not required for the nigericin-induced dispersion of the trans-Golgi network (TGN), but to bring NLRP3 in proximity with TGN38. The nigericin-induced dispersion of the Golgi is enhanced by co-stimulation with LPS, and this enhancement is IKKβ-dependent. Prolonged stimulation with LPS to increase the expression of NLRP3, followed by stimulation with nigericin, produced larger TGN38-positive puncta, and the ensuing activation of the NLRP3 inflammasome was also suppressed by IKKβ inhibitors

SUBMITTER: Nanda SK 

PROVIDER: S-EPMC8490994 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature