相关实验视频

Updated: Jun 6, 2025

Improving Small RNA-seq: Less Bias and Better Detection of 2'-O-Methyl RNAs

Improving Small RNA-seq: Less Bias and Better Detection of 2'-O-Methyl RNAs

Published on: September 16, 2019

改进了有序双模板继电器cDNA库准备用于RNA测序的精度,灵敏度和适应性

Lucas Ferguson^1,2, Heather E Upton³, Sydney C Pimentel³

¹Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California 94720, USA lucas_ferguson@berkeley.edu kcollins@berkeley.edu.

RNA (New York, N.Y.)

|December 3, 2024

概括

研究人员优化了Ordered Two-Template Relay (OTTR) 方法,以实现精确的RNA测序. 这种增强的协议最大限度地减少了偏差和污染,改善了小RNA的捕获,并实现了准确的端到端序列分析.

科学领域:

分子生物学分子生物学
基因组学就是基因组学.
生物技术是生物技术.

背景情况:

对于小RNA (<100 nt) 的标准RNA测序方法,由于涉及结合或多核酸尾巴的多步协议,产量低,偏差和信息丢失.
订购的两模板继电器 (OTTR) 之前被开发用于捕获端到端的RNA序列,并在单个步骤中添加测序适配器,显示了微RNA,tRNA和核糖体足迹库的前景.

研究的目的:

用OTTR方法对RNA序列的端到端捕获进行表征,量化和减少任何剩余的偏差或不准确性.
为了优化反应条件,酶变体和适配器寡核酸可提高RNA序列捕获保真度.

主要方法:

开发用于评估RNA序列捕获效率和精度的新指标.
优化OTTR反应缓冲区,逆转录酶序列和适应器寡核酸.
改善了被截断的Bombyx mori R2逆转录酶的复合表达和净化.
引入一个快速的,自动化兼容的,无凝的OTTR协议,用于cDNA丰富.

主要成果:

修改后的逆转录酶和适配器寡核酸显著增加了3'和5'末端精度,并最大限度地降低了库偏差.
对R2逆转录酶的增强净化使低输入RNA样本中的细菌核酸污染率降低到<10%.
新的协议使cDNA复合体的无凝,无长度的丰富成为可能,有效地将它们与仅适配器产品分开.

结论:

优化的OTTR方法提供高度精确,公正,端到端的RNA序列捕获,适用于各种RNA类型.
酶净化和工作流程的改进减少了技术工件,并提高了小RNA测序的可靠性.
这种精细的OTTR协议可方便准确的RNA注释,无论序列,结构或修改如何,推进转录组学研究.

关键词:

这就是OTTR OTTR.没有编码的RNA.没有模拟的核酸添加.反向转录酶的使用模板跳跃的模板跳跃终端转移的情况

更多相关视频

Highly Efficient Ligation of Small RNA Molecules for MicroRNA Quantitation by High-Throughput Sequencing

Highly Efficient Ligation of Small RNA Molecules for MicroRNA Quantitation by High-Throughput Sequencing

Published on: November 18, 2014

Author Spotlight: AQRNA-seq Role in Mapping Small RNAs and Unraveling Protein Translation Mechanisms

Author Spotlight: AQRNA-seq Role in Mapping Small RNAs and Unraveling Protein Translation Mechanisms

Published on: February 2, 2024

相关概念视频

RNA-seq

RNA-seq

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...

RACE - Rapid Amplification of cDNA Ends

RACE - Rapid Amplification of cDNA Ends

Rapid Amplification of cDNA Ends, or RACE, is one of the most effective methods to obtain a full-length cDNA from an mRNA sequence between a known internal region to the unknown sequence at the 5’ or 3’ end. The unknown region is cloned in the cDNA by a gene-specific primer that binds the known end, and a hybrid primer that attaches a predefined anchor sequence to the unknown end of the cDNA. The sequence in between is amplified by PCR with an anchor primer and a gene-specific...