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Interactions between Nod-Like Receptors and Intestinal Bacteria

Marcel R de Zoete1, Richard A Flavell2

  • 1Department of Immunobiology, Yale University School of Medicine , New Haven, CT , USA.

Frontiers in Immunology
|January 2, 2014
PubMed

Insights

Nucleotide oligomerization domain (Nod)-like Receptors (NLRs) are key sensors in the gut. This review explores their role in bacterial infections and maintaining gut microbiota balance.

Area of Science:

  • Immunology
  • Microbiology
  • Gastroenterology

Background:

  • Nucleotide oligomerization domain (Nod)-like Receptors (NLRs) are intracellular sensors.
  • NLRs activate Caspase-1, leading to pro-inflammatory cytokines IL-1β and IL-18 release.
  • NLRs also induce pyroptosis, a form of inflammatory cell death.

Purpose of the Study:

  • To review the role of intestinal NLRs in bacterial infections.
  • To understand NLR function in controlling gut microbiota.

Main Methods:

  • Literature review of studies on NLRs and gastrointestinal bacteria.
  • Analysis of NLR activation during pathogenic and commensal bacterial colonization.

Main Results:

  • In vitro studies show various bacteria activate NLRs.
  • The in vivo impact of NLR activation during colonization is less understood.
  • NLRs play a role in host defense against pathogens and microbiota homeostasis.

Conclusions:

  • Intestinal NLRs are crucial for sensing bacterial threats.
  • NLRs influence host-pathogen interactions and gut microbiome composition.
Keywords:
inflammasomeintestinemicrobiotanod-like receptorspathogen

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