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Dnmt3a regulates emotional behavior and spine plasticity in the nucleus accumbens.
- Source :
- Nature Neuroscience; Sep2010, Vol. 13 Issue 9, p1137-1143, 7p, 5 Graphs
- Publication Year :
- 2010
-
Abstract
- Despite abundant expression of DNA methyltransferases (Dnmts) in brain, the regulation and behavioral role of DNA methylation remain poorly understood. We found that Dnmt3a expression was regulated in mouse nucleus accumbens (NAc) by chronic cocaine use and chronic social defeat stress. Moreover, NAc-specific manipulations that block DNA methylation potentiated cocaine reward and exerted antidepressant-like effects, whereas NAc-specific Dnmt3a overexpression attenuated cocaine reward and was pro-depressant. On a cellular level, we found that chronic cocaine use selectively increased thin dendritic spines on NAc neurons and that DNA methylation was both necessary and sufficient to mediate these effects. These data establish the importance of Dnmt3a in the NAc in regulating cellular and behavioral plasticity to emotional stimuli. [ABSTRACT FROM AUTHOR]
- Subjects :
- METHYLTRANSFERASES
DNA
METHYLATION
BRAIN
NUCLEUS accumbens
COCAINE
NEURONS
Subjects
Details
- Language :
- English
- ISSN :
- 10976256
- Volume :
- 13
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Nature Neuroscience
- Publication Type :
- Academic Journal
- Accession number :
- 53166386
- Full Text :
- https://doi.org/10.1038/nn.2619