Cited by 99Down syndrome and intellectual disability researchEpigenetics and DNA MethylationGenetic Syndromes and Imprinting

Global DNA Hypermethylation in Down Syndrome Placenta

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Jin, Shengnan, Lee, Yew Kok, Lim, Yen Ching, Zheng, Zejun, Lin, Xueqin Michelle, Ng, Desmond P. Y., Holbrook, Joanna D., Law, Hai Yang +3 more·2013·PLoS Genetics

Abstract

Down syndrome (DS), commonly caused by an extra copy of chromosome 21 (chr21), occurs in approximately one out of 700 live births. Precisely how an extra chr21 causes over 80 clinically defined phenotypes is not yet clear. Reduced representation bisulfite sequencing (RRBS) analysis at single base resolution revealed DNA hypermethylation in all autosomes in DS samples. We hypothesize that such global hypermethylation may be mediated by down-regulation of TET family genes involved in DNA demethylation, and down-regulation of REST/NRSF involved in transcriptional and epigenetic regulation. Genes located on chr21 were up-regulated by an average of 53% in DS compared to normal villi, while genes with promoter hypermethylation were modestly down-regulated. DNA methylation perturbation was conserved in DS placenta villi and in adult DS peripheral blood leukocytes, and enriched for genes known to be causally associated with DS phenotypes. Our data suggest that global epigenetic changes may occur early in development and contribute to DS phenotypes.

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Authors
Jin, S., Lee, Y. K., Lim, Y. C., Zheng, Z., Lin, X. M., Ng, D. P. Y., Holbrook, J. D., Law, H. Y., Kwek, K. Y. C., Yeo, G. S. H., & Ding, C.
Affiliations
  • Agency for Science, Technology and Research (SG)
  • KK Women's and Children's Hospital (SG)
Corresponding author
Ding, Chunming
Venue
PLoS Genetics
Published
2013-06-06
Volume
9
Issue
6
Pages
e1003515
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W2061191951
Cited by
99
References
48
Citations by year
2026: 2 · 2025: 8 · 2024: 7 · 2023: 2 · 2022: 5 · 2021: 7 · 2020: 19 · 2019: 11 · 2018: 3 · 2017: 10 · 2016: 13 · 2015: 4 · 2014: 7 · 2013: 1
FWCI
8.52
Type
journal article
Language
en
Open access
Locations
  • PLoS Genetics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Ministry of Earth Sciences
  • Ministry of Education, India
  • National Medical Research Council
  • Biomedical Research Council
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Syndromes and Imprinting
Keywords
Down syndrome, DNA hypermethylation, placenta, REST/NRSF, promoter hypermethylation, gene expression, epigenetic regulation, peripheral blood leukocytes, placental villi
MeSH terms
RE1-Silencing Transcription Factor, Chromosomes, Human, Pair 21, DNA-Binding Proteins, Down Syndrome, Female, Gene Expression Regulation, Humans, Mixed Function Oxygenases, Male, Placenta, Pregnancy, Promoter Regions, Genetic, Proto-Oncogene Proteins, Repressor Proteins, Sequence Analysis, DNA, CpG Islands, DNA Methylation, Epigenesis, Genetic, Dioxygenases

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