Cited by 64Gut microbiota and healthEpigenetics and DNA MethylationAdipokines, Inflammation, and Metabolic Diseases

Gut Microbiota Composition Is Associated with the Global DNA Methylation Pattern in Obesity

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Ramos-Molina, Bruno, Sánchez-Alcoholado, Lidia, Cabrera-Mulero, Amanda, Lopez-Dominguez, Raul, Carmona-Saez, Pedro, Garcia-Fuentes, Eduardo, Moreno-Indias, Isabel, Tinahones, Francisco J.·2019·Frontiers in Genetics

Abstract

Objective: Obesity and obesity-related metabolic diseases are characterized by gut microbiota and epigenetic alterations. Recent insight has suggested the existence of a crosstalk between the gut microbiome and the epigenome. However, the possible link between alterations in gut microbiome composition and epigenetic marks in obesity has been not explored yet. The aim of this work is to establish a link between the gut microbiota and the global DNA methylation profile in a group of obese subjects and to report potential candidate genes that could be epigenetically regulated by gut microbiota in adipose tissue. Methods: Gut microbiota composition was analyzed in DNA stool samples from 45 obese subjects by 16S rRNA gene sequencing. 20 patients were selected based on their Bacteroidetes-to-Firmicutes ratio (BFR): HighBFR group (BFR>2.5, n=10); LowBFR group (BFR<1.2, n=10). Genome-wide analysis of DNA methylation pattern in both whole blood and visceral adipose tissue of these selected patients was performed with an Infinium EPIC BeadChip array-based platform. Gene expression analysis of candidate genes was done in adipose tissue by real-time quantitative PCR. Results: Genome-wide analysis of DNA methylation revealed a completely different DNA methylome pattern in both blood and adipose tissue in the low BFR group vs. the high BFR group. 258 genes were differentially methylated in both blood and adipose tissue, of which several potential candidates were selected for gene expression analysis. We found that in adipose tissue both HDAC7 and IGF2BP2 were hypomethylated and overexpressed in the low BFR group compared to the high BFR group. β values of both genes significantly correlated with the BFR ratio and the relative abundance of Bacteroidetes and/or Firmicutes. Conclusions: In this study we demonstrate that the DNA methylation status is associated to gut microbiota composition in obese subjects, and that the expression levels of candidate genes implicated in glucose and energy ho meostasis (e.g. HDAC7 and IGF2BP2) could be epigenetically regulated by gut bacterial populations in adipose tissue.

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Authors
Ramos-Molina, B., Sánchez-Alcoholado, L., Cabrera-Mulero, A., Lopez-Dominguez, R., Carmona-Saez, P., Garcia-Fuentes, E., Moreno-Indias, I., & Tinahones, F. J.
Affiliations
Instituto de Salud Carlos III (ES)
Venue
Frontiers in Genetics
Published
2019-07-03
Volume
10
Pages
613-613
ISSN
1664-8021 (ISSN-L)
OpenAlex
W2953888736
Cited by
64
References
47
Citations by year
2026: 5 · 2025: 7 · 2024: 17 · 2023: 9 · 2022: 7 · 2021: 8 · 2020: 9 · 2019: 2
FWCI
2.15
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Genetics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RISalud Institutional Health Repository of Andalucía (submittedVersion, cc-by)
  • Institutional Repository of the University of Granada (University of Granada) (submittedVersion, cc-by)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Universidad Carlos III de Madrid
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
obesity, gut microbiota, DNA methylation, Firmicutes/Bacteroidetes ratio, adipose tissue, epigenetic regulation, HDAC7, IGF2BP2, differentially methylated genes

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