Super-Enhancers at the Nanog Locus Differentially Regulate Neighboring Pluripotency-Associated Genes.
Super-Enhancers at the Nanog Locus Differentially Regulate Neighboring Pluripotency-Associated Genes.
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DOI:
10.1016/j.celrep.2016.09.002
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发表时间:
2016-09-27
期刊:
影响因子:
8.8
通讯作者:
Rao S
中科院分区:
文献类型:
--
作者:
Blinka S;Reimer MH Jr;Pulakanti K;Rao S
Super-enhancers are tissue specific cis-regulatory elements that drive expression of genes associated with cell identity and malignancy. A cardinal feature of super-enhancers is that they are transcribed to produce long non-coding RNAs (eRNAs). It remains unclear whether epigenetically indistinguishable super-enhancers robustly activate genes in situ and if these functions are attributable to eRNAs or the DNA element. CRISPR/Cas9 was used to systematically delete three discrete super-enhancers at the Nanog locus in embryonic stem cells, revealing functional differences in Nanog transcriptional regulation. One distal super-enhancer 45 kb upstream of Nanog (−45 enhancer) regulates both nearest neighbor genes Nanog and Dppa3. Interestingly, eRNAs produced at the −45 enhancer specifically regulate Dppa3 expression by stabilizing looping of the −45 enhancer and Dppa3. Our work illustrates that genomic editing is required to determine enhancer function and points to a method to selectively target a subset of super-enhancer regulated genes by depleting eRNAs.
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