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Characterization of the 17 strains of regulatory T cell-inducing human-derived Clostridia

Seiko Narushima1, Yuki Sugiura2, Kenshiro Oshima3

  • 1RIKEN Center for Integrative Medical Sciences (IMS-RCAI); Yokohama, Japan.

Gut Microbes
|March 20, 2014
PubMed

Insights

Human Clostridia strains boost regulatory T cells in the gut, potentially treating immune disorders. These findings offer new therapeutic avenues for inflammatory conditions.

Area of Science:

  • Microbiology
  • Immunology
  • Gastroenterology

Background:

  • The gut microbiota is crucial for immune system development.
  • Commensal Clostridia strains can induce regulatory T (Treg) cells in mice.
  • Previous work demonstrated Treg cell induction by mouse-derived Clostridia.

Purpose of the Study:

  • To characterize 17 human-derived Clostridia strains.
  • To assess their potential for Treg cell induction and metabolite production.
  • To evaluate their therapeutic potential for immune-inflammatory diseases.

Main Methods:

  • Isolation and selection of 17 human Clostridia strains from fecal samples.
  • Colonization of rodents to assess Treg cell induction and functional changes.
  • Characterization of antibiotic sensitivity and metabolite production (e.g., short-chain fatty acids).

Main Results:

  • Human Clostridia strains significantly increased colonic Treg cells in rodents.
  • These strains attenuated symptoms of experimental allergic diarrhea and colitis.
  • Individual strain characteristics regarding antibiotic sensitivity and metabolite profiles were determined.

Conclusions:

  • Human-derived Clostridia strains show promise as biotherapeutics.
  • These strains can modulate the host immune system by increasing Treg cells.
  • They offer a potential strategy for correcting gut dysbiosis and treating immune-inflammatory diseases.
Keywords:
ClostridiaTreggut microbiota

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