NATURE:薛愿超团队开发RNA-RNA空间相互作用的原位全景分析技术

2020-05-07 MedSci原创 MedSci原创

最近,通过将RNA结合蛋白介导的近距离连接与深度测序相结合,我国研究人员报告了一种RNA原位构象测序(RIC-seq)技术,可以用于全细胞RNA-RNA分子内和分子间相互作用的全局性分析。

具有高级结构的RNA分子通常会相互作用,并与各种RNA结合蛋白结合,以调节关键的生物过程。然而,至今为止,完整细胞中的RNA结构和相互作用在很大程度上仍然是未知的。

最近,通过将RNA结合蛋白介导的近距离连接与深度测序相结合,我国研究人员报告了一种RNA原位构象测序(RIC-seq)技术,可以用于全细胞RNA-RNA分子内和分子间相互作用的全局性分析。

该技术不仅重述了已知的RNA二级结构和三级相互作用,而且还促进了人体细胞中RNA三维(3D)相互作用图谱的生成。

利用这些图谱,研究人员在全细胞范围内识别非编码RNA靶点,并辨别出RNA拓扑域和反式相互作用枢纽。此外,研究人员还发现,增强子和启动子的功能连接性可以利用它们配对相互作用的RNA来分配。

此外,研究人员表明,CCAT1-5L-a,一个超级增强子中枢RNA,与RNA结合蛋白hnRNPK以及来自MYC启动子和增强子的RNA相互作用,通过调节染色质环化来促进MYC转录。

因此,该研究证明了RIC-seq在发现RNA的三维结构、相互作用和调控作用方面的能力和适用性。

 

原始出处:

Zhaokui CaI et al. RIC-seq for global in situ profiling of RNA–RNA spatial interactions, NATURE (2020). 

 

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