Generated Randomly and Selected Functionally? The Nature of Enterovirus Recombination.

Generated Randomly and Selected Functionally? The Nature of Enterovirus Recombination.
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DOI:
10.3390/v14050916
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发表时间:
2022-04-28
期刊:
Viruses
影响因子:
--
通讯作者:
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中科院分区:
其他
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RNA病毒的基因重组是一种重要的进化机制。它有助于种群多样性、宿主/组织适应,并影响疫苗效力。重组的分子机制和初始产物都相对知之甚少。我们使用建立的基于脊髓灰质炎病毒的体外重组实验来研究序列同一性和RNA结构在这一过程中的作用,这些序列同一性和RNA结构是通过对流行的重组病毒的分析而牵连或推断的。此外,我们使用下一代测序来研究不同血清型脊髓灰质炎病毒细胞共感染后重组的早期产物。在独立的研究中,我们没有发现RNA的特性或结构在决定重组连接位置方面的作用的证据。相反,基因组功能和适合度在确定重组后代的身份方面更重要。这些研究提供了对这一重要进化机制的进一步洞察,并强调了对混合病毒种群的选择过程的关键性质。
Genetic recombination in RNA viruses is an important evolutionary mechanism. It contributes to population diversity, host/tissue adaptation, and compromises vaccine efficacy. Both the molecular mechanism and initial products of recombination are relatively poorly understood. We used an established poliovirus-based in vitro recombination assay to investigate the roles of sequence identity and RNA structure, implicated or inferred from an analysis of circulating recombinant viruses, in the process. In addition, we used next-generation sequencing to investigate the early products of recombination after cellular coinfection with different poliovirus serotypes. In independent studies, we find no evidence for a role for RNA identity or structure in determining recombination junctions location. Instead, genome function and fitness are of greater importance in determining the identity of recombinant progeny. These studies provide further insights into this important evolutionary mechanism and emphasize the critical nature of the selection process on a mixed virus population.
多部分植物病毒的RNA成分之间的遗传重组。
DOI: 10.1038/321528a0
发表时间: 1986
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