Cited by 507Gut microbiota and healthEscherichia coli research studiesProbiotics and Fermented Foods

A Gut Commensal-Produced Metabolite Mediates Colonization Resistance to Salmonella Infection

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Jacobson, Amanda, Lam, Lilian, Rajendram, Manohary, Tamburini, Fiona, Honeycutt, Jared, Pham, Trung, Van Treuren, Will, Pruss, Kali +9 more·2018·Cell Host & Microbe

Abstract

The intestinal microbiota provides colonization resistance against pathogens, limiting pathogen expansion and transmission. These microbiota-mediated mechanisms were previously identified by observing loss of colonization resistance after antibiotic treatment or dietary changes, which severely disrupt microbiota communities. We identify a microbiota-mediated mechanism of colonization resistance against Salmonella enterica serovar Typhimurium (S. Typhimurium) by comparing high-complexity commensal communities with different levels of colonization resistance. Using inbred mouse strains with different infection dynamics and S. Typhimurium intestinal burdens, we demonstrate that Bacteroides species mediate colonization resistance against S. Typhimurium by producing the short-chain fatty acid propionate. Propionate directly inhibits pathogen growth in vitro by disrupting intracellular pH homeostasis, and chemically increasing intestinal propionate levels protects mice from S. Typhimurium. In addition, administering susceptible mice Bacteroides, but not a propionate-production mutant, confers resistance to S. Typhimurium. This work provides mechanistic understanding into the role of individualized microbial communities in host-to-host variability of pathogen transmission.

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Authors
Jacobson, A., Lam, L., Rajendram, M., Tamburini, F., Honeycutt, J., Pham, T., Van Treuren, W., Pruss, K., Stabler, S. R., Lugo, K., Bouley, D. M., Vilches-Moure, J. G., Smith, M., Sonnenburg, J. L., Bhatt, A. S., Huang, K. C., & Monack, D.
Affiliations
  • Stanford University (US)
  • Chan Zuckerberg Biohub San Francisco (US)
  • Stanford Medicine (US)
Corresponding author
Monack, Denise
Venue
Cell Host & Microbe
Publisher
Elsevier BV
Published
2018-08
Volume
24
Issue
2
Pages
296-307.e7
ISSN
1931-3128 (ISSN-L)
OpenAlex
W2884218973
Cited by
507
References
68
Citations by year
2026: 43 · 2025: 69 · 2024: 59 · 2023: 68 · 2022: 81 · 2021: 78 · 2020: 65 · 2019: 37 · 2018: 6
FWCI
16.45
Type
journal article
Language
en
Open access
Locations
  • Cell Host & Microbe (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Allergy and Infectious Diseases (R01-DK085025)
  • National Science Foundation (T32GM007276, MCB-1149328)
  • National Institute of Diabetes and Digestive and Kidney Diseases
  • National Institute of General Medical Sciences (F32AI133917)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Endocrinology › Escherichia coli research studies
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
colonization resistance, Salmonella typhimurium, gut microbiota, Bacteroides, propionate, short-chain fatty acids, intracellular pH homeostasis, inbred mouse strains, pathogen growth inhibition
MeSH terms
Gastrointestinal Microbiome, Fecal Microbiota Transplantation, Natural Resistance-associated Macrophage Protein 1, Animals, Bacteroides, Fatty Acids, Volatile, Feces, Female, Intestinal Diseases, Male, Mice, Inbred C57BL, Propionates, Salmonella Infections, Salmonella typhimurium, Cation Transport Proteins, Host-Pathogen Interactions, Bacterial Shedding

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