DNMT1-interacting RNAs block gene-specific DNA methylation.

DNMT1-interacting RNAs block gene-specific DNA methylation.
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DOI:
10.1038/nature12598
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发表时间:
2013-11-21
期刊:
影响因子:
64.8
通讯作者:
--
中科院分区:
综合性期刊1区
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DNA甲基化在近一个世纪前就已被描述。然而,控制其建立和维持的规则仍然难以捉摸。在此,我们提供的数据表明,活跃的转录调节基因组甲基化水平。我们鉴定出一种源自CEBPA基因位点的新型RNA,它在调节局部DNA甲基化图谱中起关键作用。这种RNA与DNMT1结合并阻止CEBPA基因位点甲基化。对与DNMT1相关的转录本进行深度测序,结合基因组规模的甲基化和表达谱分析,将这一发现的普遍性扩展到众多基因位点。总之,这些结果描绘了DNMT1 - RNA相互作用的性质,并为疾病中治疗靶点的基因选择性去甲基化提出了策略。
DNA methylation was described almost a century ago. However, the rules governing its establishment and maintenance remain elusive. Here, we present data demonstrating that active transcription regulates levels of genomic methylation. We identified a novel RNA arising from the CEBPA gene locus critical in regulating the local DNA methylation profile. This RNA binds to DNMT1 and prevents CEBPA gene locus methylation. Deep sequencing of transcripts associated with DNMT1 combined with genome-scale methylation and expression profiling extended the generality of this finding to numerous gene loci. Collectively, these results delineate the nature of DNMT1-RNA interactions and suggest strategies for gene selective demethylation of therapeutic targets in disease.
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