Journal
CURRENT OPINION IN MICROBIOLOGY
Volume 16, Issue 1, Pages 23-31Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.mib.2012.11.008
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Funding
- NIH [AI057588, AI075318, AI095213]
- Research Council of Norway
- Norwegian Cancer Society
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The inflammasome has emerged as an important molecular protein complex which initiates proteolytic processing of pro-IL-1 beta and pro-IL-18 into mature inflammatory cytokines. In addition, inflamnnasomes initiate pyroptotic cell death that may be independent of those cytokines. Inflammasomes are central to elicit innate immune responses against many pathogens, and are key components in the induction of host defenses following bacterial infection. Here, we review recent discoveries related to NLRP1, NLRP3, NLRC4, NLRP6, NLRP7, NLRP12 and AIM2-mediated recognition of bacteria. Mechanisms for inflammasome activation and regulation are now suggested to involve kinases such as PKR and PKC delta, ligand binding proteins such as the NAIPs, and caspase-11 and caspase-8 in addition to caspase-1. Future research will determine how specific inflammasome components pair up in optimal responses to specific bacteria.
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