Neuronal activity modifies the DNA methylation landscape in the adult brain

被引:480
作者
Guo, Junjie U. [1 ,2 ]
Ma, Dengke K. [1 ,3 ]
Mo, Huan [4 ]
Ball, Madeleine P. [5 ]
Jang, Mi-Hyeon [1 ,3 ]
Bonaguidi, Michael A. [1 ,3 ]
Balazer, Jacob A. [6 ]
Eaves, Hugh L. [4 ]
Xie, Bin [7 ]
Ford, Eric [8 ]
Zhang, Kun [9 ]
Ming, Guo-li [1 ,2 ,3 ]
Gao, Yuan [1 ,7 ]
Song, Hongjun [1 ,2 ,3 ]
机构
[1] Johns Hopkins Univ, Sch Med, Inst Cell Engn, Baltimore, MD 21218 USA
[2] Johns Hopkins Univ, Sch Med, Solomon Snyder Dept Neurosci, Baltimore, MD USA
[3] Johns Hopkins Univ, Sch Med, Dept Neurol, Baltimore, MD 21205 USA
[4] Virginia Commonwealth Univ, Ctr Study Biol Complex, Richmond, VA USA
[5] Harvard Univ, Sch Med, Dept Genet, Cambridge, MA 02138 USA
[6] Proofpoint Inc, Sunnyvale, CA USA
[7] Lieber Inst Brain Dev, Div Genom Epigenom & Bioinformat, Baltimore, MD USA
[8] Johns Hopkins Univ, Sch Med, Dept Radiat Oncol, Baltimore, MD USA
[9] Univ Calif San Diego, Dept Bioengn, La Jolla, CA 92093 USA
基金
美国国家卫生研究院;
关键词
REGULATES MEMORY FORMATION; EPIGENETIC REGULATION; GENE-REGULATION; DEMETHYLATION; CELLS; TRANSCRIPTION; PLASTICITY; GENOME; NEUROGENESIS; CANCER;
D O I
10.1038/nn.2900
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
DNA methylation has been traditionally viewed as a highly stable epigenetic mark in postmitotic cells. However, postnatal brains appear to show stimulus-induced methylation changes, at least in a few identified CpG dinucleotides. How extensively the neuronal DNA methylome is regulated by neuronal activity is unknown. Using a next-generation sequencing-based method for genome-wide analysis at single-nucleotide resolution, we quantitatively compared the CpG methylation landscape of adult mouse dentate granule neurons in vivo before and after synchronous neuronal activation. About 1.4% of 219,991 CpGs measured showed rapid active demethylation or de novo methylation. Some modifications remained stable for at least 24 h. These activity-modified CpGs showed a broad genomic distribution with significant enrichment in low-CpG density regions, and were associated with brain-specific genes related to neuronal plasticity. Our study implicates modification of the neuronal DNA methylome as a previously underappreciated mechanism for activity-dependent epigenetic regulation in the adult nervous system.
引用
收藏
页码:1345 / U172
页数:9
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