Rapid and Scalable Profiling of Nascent RNA with fastGRO.

Rapid and Scalable Profiling of Nascent RNA with fastGRO.
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DOI:
10.1016/j.celrep.2020.108373
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发表时间:
2020-11-10
期刊:
影响因子:
8.8
通讯作者:
Gardini A
Gardini A
中科院分区:
生物学1区
文献类型:
--
作者:
Barbieri E;Hill C;Quesnel-Vallières M;Zucco AJ;Barash Y;Gardini A

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新生 RNA 的全基因组分析已成为研究转录调控的基本工具。与稳态 RNA 测序 (RNA-seq) 不同,新生 RNA 分析可反映 RNA 聚合酶的实时活动,并提供转录组范围内变异的准确读数。某些种类的核 RNA(即大型基因间非编码 RNA [lincRNA] 和 eRNA)的半衰期很短,只能通过新兴的 RNA 技术来准确测量。此外,新生的 RNA-seq 可以检测终止位点的切割后 RNA 和启动子相关的反义 RNA,从而深入了解 RNA 聚合酶 II (RNAPII) 动力学和持续合成能力。在这里,我们提出了一种使用 4-硫代核糖核苷酸 (4-S-UTP) 标记的连续检测,然后通过链霉亲和素进行可逆生物素化和亲和纯化。我们的方案可以在不到 3 天内简化样品制备。我们将该技术命名为 fastGRO(快速全局连续运行)。我们证明 fastGRO 具有高度可重复性,并且比同类技术能产生更完整、更广泛的新生 RNA 覆盖。重要的是,我们证明 fastGRO 是可扩展的,并且可以用少至 0.5 × 106 的细胞来执行。巴比耶里等人。开发了 fastGRO,这是一种基于核连续运行的新兴 RNA 测序技术。 fastGRO 使用简化的、不到 3 天的方案来跟踪 RNA 聚合酶的活性,以进行差异基因表达分析、聚合酶动力学研究以及低表达和不稳定 RNA 种类的分析。低输入 fastGRO 方案可分析低至 0.5 × 106 个细胞中的新生 RNA。
Genome-wide profiling of nascent RNA has become a fundamental tool to study transcription regulation. Unlike steady-state RNA-sequencing (RNA-seq), nascent RNA profiling mirrors real-time activity of RNA polymerases and provides an accurate readout of transcriptome-wide variations. Some species of nuclear RNAs (i.e., large intergenic noncoding RNAs [lincRNAs] and eRNAs) have a short half-life and can only be accurately gauged by nascent RNA techniques. Furthermore, nascent RNA-seq detects post-cleavage RNA at termination sites and promoter-associated antisense RNAs, providing insights into RNA polymerase II (RNAPII) dynamics and processivity. Here, we present a run-on assay with 4-thio ribonucleotide (4-S-UTP) labeling, followed by reversible biotinylation and affinity purification via streptavidin. Our protocol allows streamlined sample preparation within less than 3 days. We named the technique fastGRO (fast Global Run-On). We show that fastGRO is highly reproducible and yields a more complete and extensive coverage of nascent RNA than comparable techniques can. Importantly, we demonstrate that fastGRO is scalable and can be performed with as few as 0.5 × 106 cells. Barbieri et al. developed fastGRO, a nascent RNA-sequencing technique based on nuclear run-on. Using a streamlined, under-3-days protocol, fastGRO tracks the activity of RNA polymerase for differential gene expression analysis, polymerase kinetic studies, and profiling of lowly expressed and unstable RNA species. A low-input fastGRO protocol profiles nascent RNA in as little as 0.5 × 106 cells.
使用有效和可逆的共价化学跟踪不同的RNA群体。
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