Cited by 726Gut microbiota and healthDrug Transport and Resistance MechanismsCholesterol and Lipid Metabolism

Systemic gut microbial modulation of bile acid metabolism in host tissue compartments

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Swann, Jonathan R., Want, Elizabeth J., Geier, Florian M., Spagou, Konstantina, Wilson, Ian D., Sidaway, James E., Nicholson, Jeremy K., Holmes, Elaine·2011·Proceedings of the National Academy of Sciences

Abstract

We elucidate the detailed effects of gut microbial depletion on the bile acid sub-metabolome of multiple body compartments (liver, kidney, heart, and blood plasma) in rats. We use a targeted ultra-performance liquid chromatography with time of flight mass-spectrometry assay to characterize the differential primary and secondary bile acid profiles in each tissue and show a major increase in the proportion of taurine-conjugated bile acids in germ-free (GF) and antibiotic (streptomycin/penicillin)-treated rats. Although conjugated bile acids dominate the hepatic profile (97.0 ± 1.5%) of conventional animals, unconjugated bile acids comprise the largest proportion of the total measured bile acid profile in kidney (60.0 ± 10.4%) and heart (53.0 ± 18.5%) tissues. In contrast, in the GF animal, taurine-conjugated bile acids (especially taurocholic acid and tauro-β-muricholic acid) dominated the bile acid profiles (liver: 96.0 ± 14.5%; kidney: 96 ± 1%; heart: 93 ± 1%; plasma: 93.0 ± 2.3%), with unconjugated and glycine-conjugated species representing a small proportion of the profile. Higher free taurine levels were found in GF livers compared with the conventional liver (5.1-fold; P < 0.001). Bile acid diversity was also lower in GF and antibiotic-treated tissues compared with conventional animals. Because bile acids perform important signaling functions, it is clear that these chemical communication networks are strongly influenced by microbial activities or modulation, as evidenced by farnesoid X receptor-regulated pathway transcripts. The presence of specific microbial bile acid co-metabolite patterns in peripheral tissues (including heart and kidney) implies a broader signaling role for these compounds and emphasizes the extent of symbiotic microbial influences in mammalian homeostasis.

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Authors
Swann, J. R., Want, E. J., Geier, F. M., Spagou, K., Wilson, I. D., Sidaway, J. E., Nicholson, J. K., & Holmes, E.
Affiliations
  • Imperial College London (GB)
  • AstraZeneca, Department of Clinical Pharmacology, Drug Metabolism and Pharmacokinetics; and
  • AstraZeneca (United Kingdom) (GB)
Venue
Proceedings of the National Academy of Sciences
Published
2010-09-13
Volume
108
Issue
supplement_1
Pages
4523-4530
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2138546203
Cited by
726
References
68
Citations by year
2026: 20 · 2025: 25 · 2024: 56 · 2023: 57 · 2022: 57 · 2021: 45 · 2020: 59 · 2019: 66 · 2018: 50 · 2017: 61 · 2016: 53 · 2015: 47 · 2014: 55 · 2013: 43 · 2012: 22
FWCI
9.78
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (submittedVersion)
Funders
  • AstraZeneca
  • Biotechnology and Biological Sciences Research Council (BB/C519670/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
Keywords
bile acid metabolism, gut microbiota, germ-free animals, taurine-conjugated bile acids, unconjugated bile acids, liver, kidney, heart, plasma, farnesoid X receptor, host-microbe signaling
MeSH terms
Receptor, Farnesoid X-Activated, Animals, Anti-Bacterial Agents, Bacteria, Bile Acids and Salts, Chromatography, High Pressure Liquid, Heart, Kidney, Liver, Myocardium, Mass Spectrometry, Symbiosis, Signal Transduction, Receptors, Cytoplasmic and Nuclear, Gastrointestinal Tract, Rats, Metagenome

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