Cited by 199Liver physiology and pathologyGut microbiota and healthDrug-Induced Hepatotoxicity and Protection

Commensal microbiota is hepatoprotective and prevents liver fibrosis in mice

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Mazagova, Magdalena, Wang, Lirui, Anfora, Andrew T., Wissmueller, Max, Lesley, Scott A., Miyamoto, Yukiko, Eckmann, Lars, Dhungana, Suraj +5 more·2015·The FASEB Journal

Abstract

Translocation of bacteria and their products across the intestinal barrier is common in patients with liver disease, and there is evidence that experimental liver fibrosis depends on bacterial translocation. The purpose of our study was to investigate liver fibrosis in conventional and germ‐free (GF) C57BL/6 mice. Chronic liver injury was induced by administration of thioacetamide (TAA) in the drinking water for 21 wk or by repeated intraperitoneal injections of carbon tetrachloride (CCl 4 ). Increased liver fibrosis was observed in GF mice compared with conventional mice. Hepatocytes showed more toxin‐induced oxidative stress and cell death. This was accompanied by increased activation of hepatic stellate cells, but hepatic mediators of inflammation were not significantly different. Similarly, a genetic model using Myd88/Trif‐deficient mice, which lack downstream innate immunity signaling, had more severe fibrosis than wild‐type mice. Isolated Myd88/Trif‐deficient hepatocytes were more susceptible to toxin‐induced cell death in culture. In conclusion, the commensal microbiota prevents fibrosis upon chronic liver injury in mice. This is the first study describing a beneficial role of the commensal microbiota in maintaining liver homeostasis and preventing liver fibrosis.—Mazagova, M., Wang, L., Anfora, A. T., Wissmueller, M., Lesley, S. A., Miyamoto, Y., Eckmann, L., Dhungana, S., Pathmasiri, W., Sumner, S., Westwater, C., Brenner, D. A., Schnabl, B., Commensal microbiota is hepatoprotective and prevents liver fibrosis in mice. FASEB J. 29, 1043–1055 (2015). www.fasebj.org

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Crossref · 10.1096/fj.14-259515

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  • Pentraxin 2 (PTX2) has demonstrated anti-inflammatory and anti-fibrotic properties in multiple preclinical fibrosis models.

    “pentraxin 2 (PTX2), also known as serum amyloid protein 2, has demonstrated anti-inflammatory and anti-fibrotic properties in multiple preclinical fibrosis models172,173”

    From Fibrosis: from mechanisms to medicines (2020) · cites this paper as [173]

  • Total elimination of intestinal microbiome in germ-free mice aggravates liver injury in mouse models of liver fibrosis and PSC.

    “total elimination of intestinal microbiome in germ-free mice has been shown to aggravate liver injury in mouse models of liver fibrosis and PSC.64 65”
  • The endogenous commensal microbiota provides hepatoprotective signals; complete absence of the gut microbiota increases liver injury, probably through lack of TLR4-mediated anti-apoptotic NF-κB signalling, and increases liver fibrosis.

    “It has become apparent that the endogenous commensal microbiota provides hepatoprotective signals and that complete absence of the gut microbiota results in increased liver injury — probably owing to an absence of TLR4-mediated activation of anti-apoptotic NF-κB signalling — and a subsequent increase in liver fibrosis, as demonstrated in several models13,75,76.”
  • Germ-free mice show increased liver fibrosis, which seemingly contradicts the decreased fibrosis seen in gut-sterilized mice.

    “However, recent studies have demonstrated an increase in liver fibrosis in germ-free mice75,76, which seemingly contradicts the decrease of liver fibrosis seen in gut-sterilized mice.”

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Authors
Mazagova, M., Wang, L., Anfora, A. T., Wissmueller, M., Lesley, S. A., Miyamoto, Y., Eckmann, L., Dhungana, S., Pathmasiri, W., Sumner, S., Westwater, C., Brenner, D. A., & Scmiabl, B.
Affiliations
  • University of California San Diego (US)
  • Genomics Institute of the Novartis Research Foundation (US)
  • RTI International (US)
  • Medical University of South Carolina (US)
Corresponding author
Scmiabl, Bernd
Venue
The FASEB Journal
Publisher
Wiley
Published
2014-12-02
Volume
29
Issue
3
Pages
1043-1055
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2023380764
Cited by
199
References
66
Citations by year
2026: 13 · 2025: 10 · 2024: 17 · 2023: 15 · 2022: 25 · 2021: 22 · 2020: 22 · 2019: 20 · 2018: 10 · 2017: 11 · 2016: 15 · 2015: 18
FWCI
8.18
Type
journal article
Language
en
Open access
Locations
  • The FASEB Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (K08‐DK081830, R01‐AA020703, U01‐AA021856, 2P42‐ES010337)
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Drug-Induced Hepatotoxicity and Protection
Keywords
commensal microbiota, gut microbiota, liver fibrosis, hepatoprotection, germ-free mice, bacterial translocation, thioacetamide-induced liver injury, carbon tetrachloride, hepatic stellate cell activation, oxidative stress, hepatocyte death, innate immunity, intestinal barrier, chronic liver injury
MeSH terms
Animals, Cells, Cultured, Chromatography, Liquid, Disease Models, Animal, Humans, Immunoenzyme Techniques, Inflammation, Liver Cirrhosis, Male, Mice, Inbred C57BL, RNA, Messenger, Thioacetamide, Blotting, Western, Signal Transduction, Apoptosis, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Protective Agents, Reverse Transcriptase Polymerase Chain Reaction, Hepatocytes, Cell Proliferation, Mice, Real-Time Polymerase Chain Reaction, Microbiota

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