Genome-wide DNA methylation profiling of CD8+ T cells shows a distinct epigenetic signature to CD4+ T cells in multiple sclerosis patients.

Abstract:

BACKGROUND:Multiple sclerosis (MS) is thought to be a T cell-mediated autoimmune disorder. MS pathogenesis is likely due to a genetic predisposition triggered by a variety of environmental factors. Epigenetics, particularly DNA methylation, provide a logical interface for environmental factors to influence the genome. In this study we aim to identify DNA methylation changes associated with MS in CD8+ T cells in 30 relapsing remitting MS patients and 28 healthy blood donors using Illumina 450K methylation arrays. FINDINGS:Seventy-nine differentially methylated CpGs were associated with MS. The methylation profile of CD8+ T cells was distinctive from our previously published data on CD4+ T cells in the same cohort. Most notably, there was no major CpG effect at the MS risk gene HLA-DRB1 locus in the CD8+ T cells. CONCLUSION:CD8+ T cells and CD4+ T cells have distinct DNA methylation profiles. This case-control study highlights the importance of distinctive cell subtypes when investigating epigenetic changes in MS and other complex diseases.

journal_name

Clin Epigenetics

journal_title

Clinical epigenetics

authors

Maltby VE,Graves MC,Lea RA,Benton MC,Sanders KA,Tajouri L,Scott RJ,Lechner-Scott J

doi

10.1186/s13148-015-0152-7

subject

Has Abstract

pub_date

2015-11-05 00:00:00

pages

118

eissn

1868-7075

issn

1868-7083

pii

152

journal_volume

7

pub_type

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