Cited by 714Epigenetics and DNA MethylationGenetics and Neurodevelopmental DisordersGenetic Syndromes and Imprinting

Distribution, recognition and regulation of non-CpG methylation in the adult mammalian brain

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Guo, Junjie U, Su, Yijing, Shin, Joo Heon, Shin, Jaehoon, Li, Hongda, Xie, Bin, Zhong, Chun, Hu, Shaohui +7 more·2014·Nature Neuroscience

Abstract

DNA methylation has critical roles in the nervous system and has been traditionally considered to be restricted to CpG dinucleotides in metazoan genomes. Here we show that the single base-resolution DNA methylome from adult mouse dentate neurons consists of both CpG (~75%) and CpH (~25%) methylation (H = A/C/T). Neuronal CpH methylation is conserved in human brains, enriched in regions of low CpG density, depleted at protein-DNA interaction sites and anticorrelated with gene expression. Functionally, both methylated CpGs (mCpGs) and mCpHs can repress transcription in vitro and are recognized by methyl-CpG binding protein 2 (MeCP2) in neurons in vivo. Unlike most CpG methylation, CpH methylation is established de novo during neuronal maturation and requires DNA methyltransferase 3A (DNMT3A) for active maintenance in postmitotic neurons. These characteristics of CpH methylation suggest that a substantially expanded proportion of the neuronal genome is under cytosine methylation regulation and provide a new foundation for understanding the role of this key epigenetic modification in the nervous system.

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Authors
Guo, J. U., Su, Y., Shin, J. H., Shin, J., Li, H., Xie, B., Zhong, C., Hu, S., Le, T., Fan, G., Zhu, H., Chang, Q., Gao, Y., Ming, G.-L., & Song, H.
Affiliations
  • Johns Hopkins University (US)
  • University of Wisconsin–Madison (US)
  • University of California, Los Angeles (US)
Corresponding author
Song, Hongjun
Venue
Nature Neuroscience
Published
2013-12-22
Volume
17
Issue
2
Pages
215-222
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2170356111
Cited by
714
References
57
Citations by year
2026: 25 · 2025: 29 · 2024: 29 · 2023: 44 · 2022: 52 · 2021: 56 · 2020: 56 · 2019: 62 · 2018: 77 · 2017: 92 · 2016: 80 · 2015: 77 · 2014: 35
FWCI
28.64
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
Funders
  • Johns Hopkins University
  • National Institute on Aging (R01AG024984)
  • National Institute of Mental Health (R21MH087874, R33MH087874, MH087874)
  • National Institute of General Medical Sciences (R01GM076102)
  • National Institute of Neurological Disorders and Stroke (NS 048271, R01NS047344, NS 047344, R01NS048271, NS072924, R37NS047344, R21NS072924, R56NS047344)
  • National Institute of Environmental Health Sciences (R21ES021957, ES021957)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD066560, R01HD069184, R21HD066560, HD064743, R01HD064743, P30HD003352, HD069184)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Syndromes and Imprinting
Keywords
methylome, dentate gyrus neurons, MeCP2, DNMT3A, transcriptional repression, neuronal maturation, epigenetic regulation, mouse brain, human brain
MeSH terms
DNA Methyltransferase 3A, Animals, Brain, Embryo, Mammalian, Humans, Male, Mice, Inbred C57BL, Nerve Tissue Proteins, Neurons, RNA, Messenger, Gene Expression, Genome, CpG Islands, DNA Methylation, Electrophoretic Mobility Shift Assay, Chromatin Immunoprecipitation, Mice, Methyl-CpG-Binding Protein 2, Epigenomics

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