Cited by 1,019Epigenetics and DNA MethylationMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Dnmt1 and Dnmt3a maintain DNA methylation and regulate synaptic function in adult forebrain neurons

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Feng, Jian, Zhou, Yu, Campbell, Susan L, Le, Thuc, Li, En, Sweatt, J David, Silva, Alcino J, Fan, Guoping·2010·Nature Neuroscience

Abstract

Dnmt1 and Dnmt3a are important DNA methyltransferases that are expressed in postmitotic neurons, but their function in the CNS is unclear. We generated conditional mutant mice that lack Dnmt1, Dnmt3a or both exclusively in forebrain excitatory neurons and found that only double knockout (DKO) mice showed abnormal long-term plasticity in the hippocampal CA1 region together with deficits in learning and memory. Although we found no neuronal loss, hippocampal neurons in DKO mice were smaller than in the wild type; furthermore, DKO neurons showed deregulated expression of genes, including the class I MHC genes and Stat1, that are known to contribute to synaptic plasticity. In addition, we observed a significant decrease in DNA methylation in DKO neurons. We conclude that Dnmt1 and Dnmt3a are required for synaptic plasticity, learning and memory through their overlapping roles in maintaining DNA methylation and modulating neuronal gene expression in adult CNS neurons.

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Authors
Feng, J., Zhou, Y., Campbell, S. L., Le, T., Li, E., Sweatt, J. D., Silva, A. J., & Fan, G.
Affiliations
  • University of California, Los Angeles (US)
  • Qingdao University (CN)
  • University of Alabama at Birmingham (US)
Corresponding author
Fan, Guoping
Venue
Nature Neuroscience
Published
2010-03-14
Volume
13
Issue
4
Pages
423-430
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2115818350
Cited by
1,019
References
66
Citations by year
2026: 23 · 2025: 51 · 2024: 37 · 2023: 38 · 2022: 52 · 2021: 63 · 2020: 58 · 2019: 69 · 2018: 54 · 2017: 79 · 2016: 84 · 2015: 72 · 2014: 83 · 2013: 84 · 2012: 75
FWCI
33.33
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
  • National Institutes of Health
  • National Institute on Aging (AG031722, R37AG013622, R01AG013622, R01AG031722)
  • National Institute of Mental Health (P50-MH0779720, MH 57014, R01MH057014, P50MH077972)
  • National Institute of Neurological Disorders and Stroke (NS 057098, R01NS051411, R56NS051411, P30NS057098)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
DNMT1, DNMT3A, DNA methylation, synaptic plasticity, learning and memory, hippocampal CA1, excitatory neurons, postmitotic neurons, conditional knockout mice, neuronal gene expression, MHC class I, STAT1, epigenetics
MeSH terms
DNA (Cytosine-5-)-Methyltransferase 1, DNA Methyltransferase 3A, Age Factors, Animals, Cells, Cultured, DNA (Cytosine-5-)-Methyltransferases, Female, Learning, Male, Memory, Mice, Transgenic, Neuronal Plasticity, Neurons, Synapses, Prosencephalon, Mice, Knockout, Gene Expression Regulation, Developmental, DNA Methylation, Mice

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