Cited by 383Gut microbiota and healthMicrobial Metabolic Engineering and BioproductionAnimal Nutrition and Physiology

The gut microbiota modulates host amino acid and glutathione metabolism in mice

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Mardinoglu, Adil, Shoaie, Saeed, Bergentall, Mattias, Ghaffari, Pouyan, Zhang, Cheng, Larsson, Erik, Bäckhed, Fredrik, Nielsen, Jens·2015·Molecular Systems Biology

Abstract

The gut microbiota has been proposed as an environmental factor that promotes the progression of metabolic diseases. Here, we investigated how the gut microbiota modulates the global metabolic differences in duodenum, jejunum, ileum, colon, liver, and two white adipose tissue depots obtained from conventionally raised (CONV-R) and germ-free (GF) mice using gene expression data and tissue-specific genome-scale metabolic models (GEMs). We created a generic mouse metabolic reaction (MMR) GEM, reconstructed 28 tissue-specific GEMs based on proteomics data, and manually curated GEMs for small intestine, colon, liver, and adipose tissues. We used these functional models to determine the global metabolic differences between CONV-R and GF mice. Based on gene expression data, we found that the gut microbiota affects the host amino acid (AA) metabolism, which leads to modifications in glutathione metabolism. To validate our predictions, we measured the level of AAs and N-acetylated AAs in the hepatic portal vein of CONV-R and GF mice. Finally, we simulated the metabolic differences between the small intestine of the CONV-R and GF mice accounting for the content of the diet and relative gene expression differences. Our analyses revealed that the gut microbiota influences host amino acid and glutathione metabolism in mice.

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  • Germ-free mice retain significantly higher amounts of arginine in their intestines than mice colonized by gut microbes.

    “Germ-free mice retain significantly higher amounts of arginine in their intestines than mice colonized by gut microbes.”
  • The microbiome metabolizes substantial quantities of dietary arginine and may regulate arginine availability to the immune system to some extent.

    “This indicates that the microbiome metabolizes substantial quantities of dietary arginine and may thus regulate the availability of arginine to the immune system to a certain extent (Mardinoglu et al., 2015; Matsumoto et al., 2012).”
  • The composition and concentration of amino acids may play a pivotal role in proteolytic fermentation by the gut microbiota in the small intestine, which influences amino-acid homeostasis.

    “This evidence indicates that the composition and concentration of amino acids may play a pivotal role in the proteolytic fermentation by the gut microbiota in the small intestine, which influences amino-acid homeostasis [159,160].”

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Authors
Mardinoglu, A., Shoaie, S., Bergentall, M., Ghaffari, P., Zhang, C., Larsson, E., Bäckhed, F., & Nielsen, J.
Affiliations
  • Chalmers University of Technology (SE)
  • University of Copenhagen (DK)
  • Science for Life Laboratory (SE)
Venue
Molecular Systems Biology
Published
2015-10-01
Volume
11
Issue
10
Pages
834-834
ISSN
1744-4292 (ISSN-L)
OpenAlex
W2142500268
Cited by
383
References
70
Citations by year
2026: 20 · 2025: 33 · 2024: 37 · 2023: 32 · 2022: 38 · 2021: 49 · 2020: 51 · 2019: 44 · 2018: 28 · 2017: 26 · 2016: 24 · 2015: 1
FWCI
11.58
Type
journal article
Language
en
Open access
Locations
  • Molecular Systems Biology (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (publishedVersion, cc-by)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Chalmers Publication Library (Chalmers University of Technology) (submittedVersion)
  • Chalmers Research (Chalmers University of Technology) (submittedVersion)
Funders
  • Bill & Melinda Gates Foundation
  • Knut and Alice Wallenberg Foundation
  • Torsten Söderbergs Stiftelse
  • European Commission FP7 project METACARDIS (HEALTH‐F4‐2012‐305312)
  • Novo Nordisk A/S
  • Novo Nordisk Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
gut microbiota, germ-free mice, amino acid metabolism, glutathione metabolism, portal vein, N-acetylated amino acids, host-microbe interactions, metabolic disorders
MeSH terms
Amino Acids, Animals, Glutathione, Intestine, Small, Male, Mice, Inbred C57BL, Mice, Microbiota

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