PMID- 29067994 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20230203 IS - 1935-3456 (Electronic) IS - 1933-0219 (Linking) VI - 11 IP - 3 DP - 2018 May TI - Microbiome-driven allergic lung inflammation is ameliorated by short-chain fatty acids. PG - 785-795 LID - 10.1038/mi.2017.75 [doi] AB - The mammalian gastrointestinal tract harbors a microbial community with metabolic activity critical for host health, including metabolites that can modulate effector functions of immune cells. Mice treated with vancomycin have an altered microbiome and metabolite profile, exhibit exacerbated T helper type 2 cell (Th2) responses, and are more susceptible to allergic lung inflammation. Here we show that dietary supplementation with short-chain fatty acids (SCFAs) ameliorates this enhanced asthma susceptibility by modulating the activity of T cells and dendritic cells (DCs). Dysbiotic mice treated with SCFAs have fewer interleukin-4 (IL4)-producing CD4(+) T cells and decreased levels of circulating immunoglobulin E (IgE). In addition, DCs exposed to SCFAs activate T cells less robustly, are less motile in response to CCL19 in vitro, and exhibit a dampened ability to transport inhaled allergens to lung draining nodes. Our data thus demonstrate that gut dysbiosis can exacerbate allergic lung inflammation through both T cell- and DC-dependent mechanisms that are inhibited by SCFAs. FAU - Cait, A AU - Cait A AD - Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Hughes, M R AU - Hughes MR AD - The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Antignano, F AU - Antignano F AD - The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Cait, J AU - Cait J AD - The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Dimitriu, P A AU - Dimitriu PA AD - Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Maas, K R AU - Maas KR AD - Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Reynolds, L A AU - Reynolds LA AD - Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Hacker, L AU - Hacker L AD - The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Mohr, J AU - Mohr J AD - The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Finlay, B B AU - Finlay BB AD - Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada. AD - Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada. AD - Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Zaph, C AU - Zaph C AD - Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada. AD - Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia. FAU - McNagny, K M AU - McNagny KM AD - The Biomedical Research Centre, University of British Columbia, Vancouver, British Columbia, Canada. AD - Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada. FAU - Mohn, W W AU - Mohn WW AD - Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada. LA - eng PT - Journal Article DEP - 20171025 PL - United States TA - Mucosal Immunol JT - Mucosal immunology JID - 101299742 RN - 0 (Allergens) RN - 0 (Ccl19 protein, mouse) RN - 0 (Chemokine CCL19) RN - 0 (Fatty Acids, Volatile) RN - 207137-56-2 (Interleukin-4) RN - 6Q205EH1VU (Vancomycin) SB - IM MH - Allergens/immunology MH - Animals MH - Antigen Presentation MH - Asthma/*immunology/prevention & control MH - Chemokine CCL19/metabolism MH - Dendritic Cells/*immunology MH - Dietary Supplements MH - Dysbiosis/*immunology/prevention & control MH - Fatty Acids, Volatile/*administration & dosage MH - Gastrointestinal Microbiome/immunology MH - Hypersensitivity/*immunology/prevention & control MH - Interleukin-4/genetics/metabolism MH - Lymphocyte Activation MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Microbiota/immunology MH - Pneumonia/*immunology/prevention & control MH - Th2 Cells/*immunology MH - Vancomycin/administration & dosage EDAT- 2017/10/27 06:00 MHDA- 2018/12/12 06:00 CRDT- 2017/10/26 06:00 PHST- 2016/12/19 00:00 [received] PHST- 2017/07/26 00:00 [accepted] PHST- 2017/10/27 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] PHST- 2017/10/26 06:00 [entrez] AID - S1933-0219(22)00552-9 [pii] AID - 10.1038/mi.2017.75 [doi] PST - ppublish SO - Mucosal Immunol. 2018 May;11(3):785-795. doi: 10.1038/mi.2017.75. Epub 2017 Oct 25.