Format

Send to

Choose Destination
Nat Immunol. 2013 Jul;14(7):668-75. doi: 10.1038/ni.2635.

Innate immune recognition of the microbiota promotes host-microbial symbiosis.

Author information

1
Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California, USA.

Abstract

Pattern-recognition receptors (PRRs) are traditionally known to sense microbial molecules during infection to initiate inflammatory responses. However, ligands for PRRs are not exclusive to pathogens and are abundantly produced by the resident microbiota during normal colonization. Mechanism(s) that underlie this paradox have remained unclear. Recent studies reveal that gut bacterial ligands from the microbiota signal through PRRs to promote development of host tissue and the immune system, and protection from disease. Evidence from both invertebrate and vertebrate models reveals that innate immune receptors are required to promote long-term colonization by the microbiota. This emerging perspective challenges current models in immunology and suggests that PRRs may have evolved, in part, to mediate the bidirectional cross-talk between microbial symbionts and their hosts.

PMID:
23778794
PMCID:
PMC4109969
DOI:
10.1038/ni.2635
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Nature Publishing Group Icon for PubMed Central
Loading ...
Support Center