Cited by 26Epigenetics and DNA MethylationDementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

DNA Methylation Analysis of Candidate Genes Associated with Dementia in Peripheral Blood

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Fransquet, Peter D, Lacaze, Paul, Saffery, Richard, Phung, James, Parker, Emily, Shah, Raj C, Murray, Anne, Woods, Robyn L +1 more·2020·Epigenomics

Abstract

Aim: To investigate whether genes implicated in dementia pathogenesis are differently methylated in peripheral blood. Materials & methods: Participants included 160 cognitively healthy individuals aged 70+ years: 73 who were subsequently diagnosed with dementia and 87 controls matched on age, gender, education, smoking and baseline cognition. A total of 49 participants also provided blood samples at diagnosis. Blood DNA methylation of APOE, APP, BDNF, PIN1, SNCA and TOMM40 was examined. Results: A total of 56 of 299 probes were differentially methylated in dementia compared with controls and 39 probes prior to diagnosis. The greatest effect size was in APP (cg19423170, Δ-8.32%, adjusted p = 0.009 at diagnosis; cg19933173, Δ-4.18%, adjusted p < 0.0001 prediagnosis). Conclusion: Genes implicated in dementia pathogenesis show differential blood methylation in dementia, even prior to diagnosis.

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Authors
Fransquet, P. D., Lacaze, P., Saffery, R., Phung, J., Parker, E., Shah, R. C., Murray, A., Woods, R. L., & Ryan, J.
Affiliations
  • Monash University (AU)
  • The University of Melbourne (AU)
  • Rush University Medical Center (US)
  • University of Minnesota (US)
  • Inserm (FR)
Venue
Epigenomics
Published
2020-12
Volume
12
Issue
23
Pages
2109-2123
ISSN
  • 1750-1911 (ISSN-L)
  • 1750-192X
OpenAlex
W3088593081
Cited by
25
References
54
Citations by year
2026: 3 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 8 · 2021: 2
FWCI
1.22
Type
journal article
Language
en
Open access
Locations
  • Epigenomics (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Deakin Research Online (Deakin University) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Australian Government RTP Scholarship
  • Dementia Research Leader Fellowship (APP1135727)
  • National Health and Medical Research Council (NHMRC) of Australia (1127060, 334047)
  • National Institute on Aging and the National Cancer Institute at the National Institutes of Health (U01AG029824)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
DNA methylation, dementia, peripheral blood, candidate genes, apolipoprotein E, APP, brain-derived neurotrophic factor, Pin1, SNCA, TOMM40, epigenetic biomarkers, pre-diagnostic biomarkers, older adults, Alzheimer's disease
MeSH terms
NIMA-Interacting Peptidylprolyl Isomerase, Mental Status and Dementia Tests, Mitochondrial Precursor Protein Import Complex Proteins, Aged, Aged, 80 and over, Apolipoproteins E, Dementia, Female, Humans, Male, Amyloid beta-Protein Precursor, DNA Methylation, Brain-Derived Neurotrophic Factor, Membrane Transport Proteins, alpha-Synuclein

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