短读RNA-Seq数据中不均覆盖的来源
Thomas G Brooks1, Nicholas F Lahens1, Antonijo Mrčela1
1Institute for Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA, USA.
bioRxiv : the preprint server for biology
|February 20, 2025
概括
RNA拼接对于细胞功能至关重要,但RNA-Seq数据显示覆盖范围不均. 这项研究调查了八个来源,没有发现单一的原因,并挑战了关于RNA-Seq分析的先前假设.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- RNA拼接对于正常的细胞功能和疾病至关重要.
- 短读RNA测序 (RNA-Seq) 是转录组量化的标准.
- 跨转录的RNA-Seq覆盖的极端不均性是一个主要的技术工件,阻碍了准确的异形水平分析.
研究的目的:
- 识别和调查RNA-Seq库准备中的不统一性来源.
- 批判性地评估影响RNA-Seq覆盖范围的因素,挑战现有假设.
主要方法:
- 探索八个潜在的不统一来源.
- 针对碎片长度,PCR升级率和核糖体枯竭的有针对性的实验.
- 评估现有数据集的样本质量,PCR周期和逆转录酶的变化.
主要成果:
- RNA-Seq覆盖的不均是多因素的,不能归因于单一的原因.
- 二次结构不太可能显著干扰反转录.
- 核糖体枯竭方法不会引入非均性.
- PCR升级率和片段长度对覆盖范围的不均性影响很小,这与之前的建议相矛盾.
结论:
- 由于覆盖不均的多因素性质,现有的RNA-Seq协议和分析方法可能需要重新评估.
- 这些发现挑战了关于RNA-Seq文物的常见假设和先前出版物.
相关概念视频
RNA-seq
9.8K
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
9.8K
Ribosome Profiling
3.5K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.5K


