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Updated: Jul 4, 2025

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通过高通量测序对在布罗莫病毒感染期间封装的变异性RNAs进行表征

Sarah Dexheimer¹, Nipin Shrestha¹, Bandana Sharma Chapagain¹

¹Department of Biological Sciences, Plant Molecular and Bioinformatics Center, Northern Illinois University, DeKalb, IL 60115, USA.

Pathogens (Basel, Switzerland)

|January 26, 2024

概括

这项研究确定了体马赛克病毒 (BMV) 和Cowpea chlorotic mottle virus (CCMV) 颗粒中的RNA重组. 这些使用ViReMa检测到的病毒RNA重组剂有助于这些病毒的基因组灵活性.

科学领域:

病毒学病毒学
分子生物学分子生物学
基因组学就是基因组学.

背景情况:

众所周知,包括Brome马赛克病毒 (BMV) 和Cowpea chlorotic mottle virus (CCMV) 在内的类病毒在感染期间会积累RNA重组剂.
之前的工作确立了这些重组剂在感染组织中的存在.

研究的目的:

为了描述在纯化的BMV和CCMV病毒中具体封装的RNA重组剂.
量化病毒颗粒内的RNA重组事件的流行率和类型.

主要方法:

利用病毒重组映射器 (ViReMa) 工具分析高通量测序 (HTS) 短RNA读取.
分析的RNA序列从纯化的BMV和CCMV病毒中读取,以确定重组结点.
量化了未映射的读数,并将它们分类为RNA重组剂.

主要成果:

超过28%的BMV和CCMVRNA读数没有完美地映射到各自的基因组.
ViReMa确定了1.40% (BMV) 和1.83% (CCMV) 的未绘制的读数为RNA重组剂.
细分内部的重组比细分间的重组更频繁,往往导致由于indels.而导致的移突变. 在开放的读取框架内发现了突变热点. 病毒和宿主RNA之间发生了一些重组.

结论:

纯化的病毒体包装了可检测量的各种RNA重组剂.
这些发现凸显了RNA重组在病毒的基因组可塑性中的重要作用.
再组合RNA的包装表明了快速病毒进化的机制.

关键词:

这是一个蝶结.在RNA重组的过程中,RNA重组.RNA病毒的RNA病毒在RNA-seqqq.国家统一计划 (SNP) 是一个国家统一计划.这就是ViReMa的意义.删除删除删除删除删除基因突变的概况分析替代品替代品替代品

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