Cited by 117Epigenetics and DNA MethylationGenetic Associations and EpidemiologyStress Responses and Cortisol

Genome-wide methylation study on depression: differential methylation and variable methylation in monozygotic twins

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Córdova-Palomera, A, Fatjó-Vilas, M, Gastó, C, Navarro, V, Krebs, M-O, Fañanás, L·2015·Translational Psychiatry

Abstract

Depressive disorders have been shown to be highly influenced by environmental pathogenic factors, some of which are believed to exert stress on human brain functioning via epigenetic modifications. Previous genome-wide methylomic studies on depression have suggested that, along with differential DNA methylation, affected co-twins of monozygotic (MZ) pairs have increased DNA methylation variability, probably in line with theories of epigenetic stochasticity. Nevertheless, the potential biological roots of this variability remain largely unexplored. The current study aimed to evaluate whether DNA methylation differences within MZ twin pairs were related to differences in their psychopathological status. Data from the Illumina Infinium HumanMethylation450 Beadchip was used to evaluate peripheral blood DNA methylation of 34 twins (17 MZ pairs). Two analytical strategies were used to identify (a) differentially methylated probes (DMPs) and (b) variably methylated probes (VMPs). Most DMPs were located in genes previously related to neuropsychiatric phenotypes. Remarkably, one of these DMPs (cg01122889) was located in the WDR26 gene, the DNA sequence of which has been implicated in major depressive disorder from genome-wide association studies. Expression of WDR26 has also been proposed as a biomarker of depression in human blood. Complementarily, VMPs were located in genes such as CACNA1C, IGF2 and the p38 MAP kinase MAPK11, showing enrichment for biological processes such as glucocorticoid signaling. These results expand on previous research to indicate that both differential methylation and differential variability have a role in the etiology and clinical manifestation of depression, and provide clues on specific genomic loci of potential interest in the epigenetics of depression.

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  1. First MB Structured Clinical Interview for DSM-IV Axis I Disorders: SCID - I: Clinician Version: Administration Booklet American Psychiatric Press: Washington, DC, USA 1997

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Authors
Córdova-Palomera, A., Fatjó-Vilas, M., Gastó, C., Navarro, V, Krebs, M.-O., & Fañanás, L.
Affiliations
  • Instituto de Salud Carlos III (ES)
  • Inserm (FR)
Corresponding author
Fañanás, L
Venue
Translational Psychiatry
Published
2015-04-28
Volume
5
Issue
4
Pages
e557-e557
ISSN
2158-3188 (ISSN-L)
OpenAlex
W2076363539
Cited by
117
References
96
Citations by year
2026: 6 · 2025: 4 · 2024: 4 · 2023: 6 · 2022: 8 · 2021: 13 · 2020: 10 · 2019: 12 · 2018: 19 · 2017: 20 · 2016: 10 · 2015: 4 · 2014: 1
FWCI
7.67
Type
journal article
Language
en
Open access
Locations
  • Translational Psychiatry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
Ministerio de Ciencia e Innovación (PIM2010ERN-00642, SAF2008-05674-C03-01)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
depression, DNA methylation, monozygotic twins, differential methylation, WDR26, CACNA1C, insulin-like growth factor II, MAPK11, glucocorticoid signaling, major depressive disorder, peripheral blood DNA
MeSH terms
Adult, Major Depressive Disorder, Depressive Disorder, Female, Humans, Insulin-Like Growth Factor II, Male, Middle Aged, Proteins, Twins, Monozygotic, DNA Methylation, Calcium Channels, L-Type, Epigenesis, Genetic, Mitogen-Activated Protein Kinase 11, Adaptor Proteins, Signal Transducing, Young Adult

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