最新重要论文(影响因子PNAS及以上)

Profiling the long noncoding RNA interaction network in the regulatory elements of target genes by chromatin in situ reverse transcription sequencing,Genome Res, 17 Jul 2019

发布时间:2019年07月15日

Genome Research17 July, 2019,DOI:https://doi.org/10.1101/gr.244996.118

Profiling the long noncoding RNA interaction network in the regulatory elements of target genes by chromatin in situ reverse transcription sequencing

Shilin Zhang, Yichen Wang, Lin Jia, Xue Wen, Zhonghua Du, Cong Wang, Yajing Hao, Dehai Yu, Lei Zhou, Naifei Chen, Jingcheng Chen, Huiling Chen, Hui Zhang, Ilkay Celik, Günhan Gülsoy, Jianjun Luo, Baoming Qin, Xueling Cui, Zhonghui Liu, Songling Zhang, Miguel A. Esteban, Ferhat Ay, Wei Xu, Runsheng Chen, Wei Li, Andrew R. Hoffman, Ji-Fan Hu and Jiuwei Cui

Abstract

Long noncoding RNAs (lncRNAs) can regulate the activity of target genes by participating in the organization of chromatin architecture. We have devised a “chromatin-RNA in situ reverse transcription sequencing” (CRIST-seq) approach to profile the lncRNA interaction network in gene regulatory elements by combining the simplicity of RNA biotin labeling with the specificity of the CRISPR/Cas9 system. Using gene-specific gRNAs, we describe a pluripotency-specific lncRNA interacting network in the promoters of Sox2 and Pou5f1, two critical stem cell factors that are required for the maintenance of pluripotency. The promoter-interacting lncRNAs were specifically activated during reprogramming into pluripotency. Knockdown of these lncRNAs caused the stem cells to exit from pluripotency. In contrast, overexpression of the pluripotency-associated lncRNA activated the promoters of core stem cell factor genes and enhanced fibroblast reprogramming into pluripotency. These CRIST-seq data suggest that the Sox2 and Pou5f1 promoters are organized within a unique lncRNA interaction network that determines the fate of pluripotency during reprogramming. This CRIST approach may be broadly used to map lncRNA interaction networks at target loci across the genome.

文章链接:https://genome.cshlp.org/content/29/9/1521

 

 

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