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Genetics
用于隔离和测序微RNA并使用开源工具分析微RNA的完整管道
用于隔离和测序微RNA并使用开源工具分析微RNA的完整管道
JoVE Journal
Genetics
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JoVE Journal Genetics
A Complete Pipeline for Isolating and Sequencing MicroRNAs, and Analyzing Them Using Open Source Tools

用于隔离和测序微RNA并使用开源工具分析微RNA的完整管道

Full Text
7,988 Views
09:29 min
August 21, 2019

DOI: 10.3791/59901-v

Meredith M. Course1, Kathryn Gudsnuk1, Paul N. Valdmanis1

1Division of Medical Genetics,University of Washington School of Medicine

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Please note that some of the translations on this page are AI generated. Click here for the English version.

Overview

This article presents a detailed protocol for isolating small RNAs and enriching microRNAs for high-throughput sequencing. It also outlines the processing of sequence reads and alignment to microRNAs using open-source bioinformatics tools.

Key Study Components

Area of Science

  • Neuroscience
  • Biology
  • Bioinformatics

Background

  • MicroRNAs play a crucial role in gene regulation.
  • High-throughput sequencing provides insights into disease mechanisms.
  • Accurate quantification of small RNAs is essential for gene therapy.
  • Protocols must ensure RNase-free environments to prevent RNA degradation.

Purpose of Study

  • To develop a reproducible protocol for small RNA sequencing.
  • To analyze normalized reads using open-source tools.
  • To enhance the understanding of microRNA processing and its implications in diseases.

Methods Used

  • Isolation of small RNAs through gel purification.
  • Preparation of samples for high-throughput sequencing.
  • Use of three prime adaptor ligation for RNA.
  • Bioinformatics analysis of sequencing data.

Main Results

  • The protocol effectively collects microRNAs.
  • Bioinformatics tools can be applied universally to microRNA data.
  • Visual aids for gel cutting enhance protocol clarity.
  • Insights into microRNA roles in gene therapy are highlighted.

Conclusions

  • The developed protocol is defined and reproducible.
  • It provides a reliable method for analyzing small RNAs.
  • Future applications can lead to advancements in understanding disease mechanisms.

Frequently Asked Questions

What are small RNAs?
Small RNAs are short, non-coding RNA molecules that play critical roles in regulating gene expression.
Why is RNase-free environment important?
An RNase-free environment prevents degradation of RNA, ensuring the integrity of the samples.
What tools are used for bioinformatics analysis?
Open-source bioinformatics tools are utilized for processing and analyzing sequencing data.
How does gel purification work?
Gel purification separates RNA molecules based on size, allowing for the selective collection of microRNAs.
What insights can high-throughput sequencing provide?
It can reveal information about disease mechanisms and the processing of microRNAs.
What is three prime adaptor ligation?
It is a method used to attach a specific linker to the RNA, facilitating sequencing.

在这里,我们描述了一个分步策略,用于隔离小型RNA、丰富微RNA和为高通量测序准备样本。然后,我们介绍如何使用开源工具处理序列读取并将其与微RNA对齐。

我们开发了一种定义、可重复和长期的协议,用于小型RNA测序和使用开源生物信息学工具分析规范化读取。我们战略的主要优点是,它通过凝胶纯化准确收集微RNA,无论微RNA如何收集,生物信息学分析都可以应用。微RNA的高通量测序可以揭示对疾病机制、微RNA处理以及提供小型RNA的基因治疗方法的准确定量。

确保在无 RNase 的环境中工作,并在整个过程中将所有RNA产品保持在冰上。可视化凝胶切割步骤将有助于查看者识别下游应用所需的产品的正确尺寸。对于三种原生适配器连接,将 11 微升 RNA 与 1.5 微升 ATP 无 ATP 10X T4RNA 连接酶反应缓冲液、1 微升聚乙烯二醇和 0.5 微升三个原成链接器。

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