Cited by 960Gut microbiota and healthAdipokines, Inflammation, and Metabolic DiseasesImmune Response and Inflammation

Crosstalk between Gut Microbiota and Dietary Lipids Aggravates WAT Inflammation through TLR Signaling

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Caesar, Robert, Tremaroli, Valentina, Kovatcheva-Datchary, Petia, Cani, Patrice D., Bäckhed, Fredrik·2015·Cell Metabolism

Abstract

Dietary lipids may influence the abundance of circulating inflammatory microbial factors. Hence, inflammation in white adipose tissue (WAT) induced by dietary lipids may be partly dependent on their interaction with the gut microbiota. Here, we show that mice fed lard for 11 weeks have increased Toll-like receptor (TLR) activation and WAT inflammation and reduced insulin sensitivity compared with mice fed fish oil and that phenotypic differences between the dietary groups can be partly attributed to differences in microbiota composition. Trif(-/-) and Myd88(-/-) mice are protected against lard-induced WAT inflammation and impaired insulin sensitivity. Experiments in germ-free mice show that an interaction between gut microbiota and saturated lipids promotes WAT inflammation independent of adiposity. Finally, we demonstrate that the chemokine CCL2 contributes to microbiota-induced WAT inflammation in lard-fed mice. These results indicate that gut microbiota exacerbates metabolic inflammation through TLR signaling upon challenge with a diet rich in saturated lipids.

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Crossref · 10.1016/j.cmet.2015.07.026

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  • Saturated and unsaturated fats have different effects on gut microbiota; microbiota altered by unsaturated fats can protect against lard-induced weight gain.

    “Saturated and unsaturated fats have profoundly different effects on the gut microbiota, and the altered microbiota that results from feeding unsaturated fats can offer protection from lard-induced weight gain44.”
  • Germ-free mice fed a high-fat diet with less sucrose are only partly protected from obesity.

    “germ-free mice that are fed a high-fat diet with less sucrose are only partly protected against obesity44”
  • Consuming a diet high in saturated fats changes the makeup of the gut microbiota.

    “A switch to a diet rich in saturated fatty acids shifts the composition of the microbiota44.”
  • When mice receive lard rather than fish oil as dietary fat, Bilophila rises and Desulfovibrio falls.

    “Similarly, increased levels of Bilophila and a reduced abundance of Desulfovibrio were observed in mice that were fed lard compared with fish oil as a source of fat44.”
  • Omega-3 PUFAs modulate intestinal microbiota composition and help normalize it after disrupting environmental stress.

    “Latest data implied that omega-3 PUFAs modulate the intestinal microbiota composition and help normalize it after disrupting environmental stress [166,168].”

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Authors
Caesar, R., Tremaroli, V., Kovatcheva-Datchary, P., Cani, P. D., & Bäckhed, F.
Affiliations
  • University of Gothenburg (SE)
  • Walloon Excellence in Lifesciences and Biotechnology (BE)
  • University of Copenhagen (DK)
Corresponding author
  • Caesar, Robert
  • Bäckhed, Fredrik
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2015-10
Volume
22
Issue
4
Pages
658-668
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2096736123
Cited by
960
References
51
Citations by year
2026: 43 · 2025: 52 · 2024: 76 · 2023: 89 · 2022: 124 · 2021: 109 · 2020: 114 · 2019: 105 · 2018: 88 · 2017: 85 · 2016: 59 · 2015: 12
FWCI
35.30
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by-nc-nd)
  • Digital Access to Libraries (submittedVersion, other-oa)
Funders
  • Stiftelsen för Strategisk Forskning
  • Fonds De La Recherche Scientifique - FNRS (WELBIO-CR-2012S-02R)
  • Knut och Alice Wallenbergs Stiftelse
  • Novo Nordisk
  • Vetenskapsrådet
  • Göteborgs Universitet
  • Novo Nordisk Fonden (NNF13OC0008163)
  • Walloon excellence in life sciences and biotechnology
  • Wageningen University and Research
  • Uppsala Multidisciplinary Center for Advanced Computational Science
  • FP7 Food, Agriculture and Fisheries, Biotechnology
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
gut microbiota, dietary fat, white adipose tissue inflammation, Toll-like receptor signaling, lard, fish oil, saturated fatty acids, insulin sensitivity, metabolic inflammation, CCL2 chemokine, MyD88, TRIF, germ-free mice
MeSH terms
Gastrointestinal Microbiome, Animals, Bacteria, Body Weight, DNA, Bacterial, Fish Oils, Inflammation, Male, Mice, Inbred C57BL, Phylogeny, Signal Transduction, Mice, Knockout, Chemokine CCL2, Adaptor Proteins, Vesicular Transport, Gastrointestinal Tract, Toll-Like Receptors, Mice, Adipose Tissue, White, Myeloid Differentiation Factor 88, Diet, High-Fat

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