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Updated: Jul 2, 2025

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Published on: June 16, 2011

在RNA病毒基因组中识别和量化多个变异

Johnny Sena¹, Lovkesh Karwal², Callum Bell¹

¹National Center for Genome Resources, Santa Fe, NM, United States.

Biology methods & protocols

|February 28, 2024

概括

这项研究开发了一种长期阅读的测序方法,以识别具有远程突变的复杂RNA病毒变体. 该技术准确地描述了登革热2疫苗变体,证明了它对病毒疫苗稳定性和进化研究的有用性.

科学领域:

病毒学病毒学
基因组学就是基因组学.
分子生物学分子生物学

背景情况:

在RNA病毒中识别远程突变对于疫苗开发和理解病毒演变至关重要.
现有的方法可能难以表征复杂的变异,突变分布在很大的基因组距离.

研究的目的:

开发和验证一种长期阅读的测序协议,用于识别和表征突变>5kB的RNA病毒变体.
评估PacBio测序与独特的分子标识符的实用性,以量化病毒变异.

主要方法:

开发了一种逆转录-聚合酶连锁反应协议,以放大大约5.3kb的登革热2cDNA片段.
嵌入了独特的分子标识符,用于PacBio长时间阅读库的准备.
使用工程化登革热2疫苗逆转型变体和复杂混合物验证了该方法.

主要成果:

该PacBio测序方法准确地识别和量化了所有测试样本中的变异组合.
成功描述了登革热2的复发变种和复杂混合物.
证明了该方法在减弱位置量化变异的精度.

结论:

长读测序是有效的识别和量化复杂的RNA病毒变体与单个基因组的多个突变.
这种方法支持对活体减弱病毒疫苗进行深入的基因稳定性评估和逆转性检测.
这种方法对于研究病毒进化,免疫逃避和宿主细胞适应是有价值的.

关键词:

这就是PacBio.这种RNA病毒的变体是RNA病毒变体.一个UMI就是UMI.登革热病毒感染者

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Combining Analysis of DNA in a Crude Virion Extraction with the Analysis of RNA from Infected Leaves to Discover New Virus Genomes

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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...