In situ visualization of m6A sites in cellular mRNAs.

In situ visualization of m6A sites in cellular mRNAs.
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DOI:
10.1093/nar/gkad787
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发表时间:
2023-11-10
影响因子:
14.9
通讯作者:
--
中科院分区:
生物学2区
文献类型:
--
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N-6-甲基腺苷(m6 A)是一种丰富的RNA修饰物,在RNA功能和细胞生理中起着重要作用。然而,由于缺乏可视化细胞中感兴趣的甲基化转录物的方法,我们对m6 A如何在空间上调节的理解仍然有限。在这里,我们开发了DART-FISH,这是一种原位可视化靶RNA中特定m6 A位点的方法,可以同时检测m6 A修饰和未修饰的转录本拷贝。我们证明了DART-FISH在不同细胞类型的各种mRNA中可视化m6 A的能力,并在单细胞分辨率下提供m6 A位点的位置和化学计量信息。最后,我们使用DART-FISH来揭示,在氧化应激期间,m6 A不足以使mRNA定位于应激颗粒。该技术为检查m6 A修饰的转录动力学和研究单个细胞中甲基化RNA的定位提供了有力的工具。
N 6-methyladenosine (m6A) is an abundant RNA modification which plays critical roles in RNA function and cellular physiology. However, our understanding of how m6A is spatially regulated remains limited due to a lack of methods for visualizing methylated transcripts of interest in cells. Here, we develop DART-FISH, a method for in situ visualization of specific m6A sites in target RNAs which enables simultaneous detection of both m6A-modified and unmodified transcript copies. We demonstrate the ability of DART-FISH to visualize m6A in a variety of mRNAs across diverse cell types and to provide information on the location and stoichiometry of m6A sites at single-cell resolution. Finally, we use DART-FISH to reveal that m6A is not sufficient for mRNA localization to stress granules during oxidative stress. This technique provides a powerful tool for examining m6A-modified transcript dynamics and investigating methylated RNA localization in individual cells.
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发表时间: 2013-09
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