Cited by 166T-cell and B-cell ImmunologyGut microbiota and healthImmune Response and Inflammation

Microbiota maintain colonic homeostasis by activating TLR2/MyD88/PI3K signaling in IL-10–producing regulatory B cells

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Mishima, Yoshiyuki, Oka, Akihiko, Liu, Bo, Herzog, Jeremy W., Eun, Chang Soo, Fan, Ting-Jia, Bulik-Sullivan, Emily, Carroll, Ian M. +10 more·2019·Journal of Clinical Investigation

Abstract

Resident microbiota activate regulatory cells that modulate intestinal inflammation and promote and maintain intestinal homeostasis. IL-10 is a key mediator of immune regulatory function. Our studies described the functional importance and mechanisms by which gut microbiota and specific microbial components influenced the development of intestinal IL-10-producing B cells. We used fecal transplant to germ-free (GF) Il10+/EGFP reporter and Il10-/- mice to demonstrate that microbiota from specific pathogen-free mice primarily stimulated IL-10-producing colon-specific B cells and T regulatory-1 cells in ex-GF mice. IL-10 in turn down-regulated microbiota-activated mucosal inflammatory cytokines. TLR2/9 ligands and enteric bacterial lysates preferentially induced IL-10 production and regulatory capacity of intestinal B cells. Analysis of Il10+/EGFP mice crossed with additional gene-deficient strains and B cell co-transfer studies demonstrated that microbiota-induced IL-10-producing intestinal B cells ameliorated chronic T cell-mediated colitis in a TLR2, MyD88 and PI3K-dependent fashion. In vitro studies implicated PI3Kp110δ and AKT downstream signaling. These studies demonstrated that resident enteric bacteria activated intestinal IL-10-producing B cells through TLR2, MyD88 and PI3K pathways. These B cells reduced colonic T cell activation and maintained mucosal homeostasis in response to intestinal microbiota.

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  • The gut microbiota also activated intestinal cells that produce IL-10 in MyD88/TLR2/PI3K-dependent pathways to maintain mucosal homeostasis.

    “The gut microbiota also activated intestinal cells that produce IL-10 in MyD88/TLR2/ PI3K-dependent pathways to maintain mucosal homeostasis.123”
  • Resident microbiota stimulated the regulatory capacity of B cells to reduce colonic T cell activation, maintaining mucosal homeostasis.

    “Moreover, it was shown that resident microbiota also stimulated the regulatory capacity of B cells to reduce colonic T cell activation, maintaining mucosal homeostasis [48].”

    From Gut microbiota-mediated immunomodulation in tumor (2021) · cites this paper as [48]

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Authors
Mishima, Y., Oka, A., Liu, B., Herzog, J. W., Eun, C. S., Fan, T.-J., Bulik-Sullivan, E., Carroll, I. M., Hansen, J. J., Chen, L., Wilson, J. E., Fisher, N. C., Ting, J. P. Y., Nochi, T., Wahl, A., Garcia, J. V., Karp, C. L., & Sartor, R. B.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • UNC Lineberger Comprehensive Cancer Center (US)
  • Cincinnati Children's Hospital Medical Center (US)
Corresponding author
Sartor, R. Balfour
Venue
Journal of Clinical Investigation
Published
2019-08-05
Volume
129
Issue
9
Pages
3702-3716
ISSN
  • 0021-9738 (ISSN-L)
  • 1558-8238
OpenAlex
W2950835870
Cited by
166
References
56
Citations by year
2026: 13 · 2025: 13 · 2024: 22 · 2023: 28 · 2022: 27 · 2021: 31 · 2020: 27 · 2019: 5
FWCI
8.97
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • UNC Libraries
Funders
  • Crohn’s and Colitis Foundation (Microbiome Initiative (RBS),Gnotobiotic Facility (RBS), Research Fellowship Award (YM,AO))
  • the American Cancer Society (PF-13-401-01-TBE.)
  • NIH (P01 DK094779,R01 DK53347,P40 OD010995,P30 DK34987 (RBS),R01 CA156330 (JPYT), R01 AI123010 (AW),R01 AI111899,Al140799,MH108179 (JVG))
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
gut microbiota, intestinal homeostasis, IL-10-producing B cells, regulatory B cells, TLR2, MyD88, PI3K signaling, Akt, T cell-mediated colitis, mucosal inflammation, bacterial extracts, fecal microbiota transplantation, germ-free mice
MeSH terms
Gastrointestinal Microbiome, Fecal Microbiota Transplantation, Animals, Colitis, Germ-Free Life, Immunity, Innate, Inflammation, Intestines, Mice, Inbred C57BL, Down-Regulation, Cytokines, Interleukin-10, Mice, Knockout, Phosphatidylinositol 3-Kinases, Green Fluorescent Proteins, Toll-Like Receptor 2, Toll-Like Receptor 9, Mice, Myeloid Differentiation Factor 88, B-Lymphocytes, Regulatory

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