Autophagy and inflammasome interplay

DNA and Cell Biology
João D MartinsMaria Teresa Cruz

Abstract

Inflammation is a defensive response of the organism to manage harmful stimuli sensed by innate immune cells. The signal alarm is triggered by the recognition of pathogen-associated molecular patterns, such as microbial components, or host-derived damage-associated molecular patterns (DAMPs), namely high-mobility group box 1 protein (HMGB1) and purine metabolites, through a set of highly conserved receptors in immune cells termed pattern recognition receptors. Among these receptors, membrane-associated toll-like receptors (TLRs) and cytosolic nucleotide binding and oligomerization domain (nod)-like receptors (NLRs) assume particular relevance in the inflammatory process. Once activated, NLRs induce the assembly of multiprotein complexes called inflammasomes, leading to production of proinflammatory cytokines (e.g., interleukin-1) and induction of inflammatory cell death (pyroptosis) through the activation of caspase-1. Although these processes intend to protect the body from insults, prolonged or exacerbated inflammatory responses associated with inflammasome activation are related to a growing number of diseases. Recently, inflammasome activation and autophagy were shown to be linked and to mutually influence each other. There...Continue Reading

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Methods Mentioned

BETA
nuclear translocation

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