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两栖动物和鱼类中的流感样病毒具有多样性,支持了它们之间古老的进化关联。

Divergent Influenza-Like Viruses of Amphibians and Fish Support an Ancient Evolutionary Association.

机构信息

Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4067, Australia.

Marie Bashir Institute for Infectious Diseases and Biosecurity, School of Life & Environmental Sciences and School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia.

出版信息

Viruses. 2020 Sep 18;12(9):1042. doi: 10.3390/v12091042.

Abstract

Influenza viruses (family ) infect a variety of vertebrates, including birds, humans, and other mammals. Recent metatranscriptomic studies have uncovered divergent influenza viruses in amphibians, fish and jawless vertebrates, suggesting that these viruses may be widely distributed. We sought to identify additional vertebrate influenza-like viruses through the analysis of publicly available RNA sequencing data. Accordingly, by data mining, we identified the complete coding segments of five divergent vertebrate influenza-like viruses. Three fell as sister lineages to influenza B virus: salamander influenza-like virus in Mexican walking fish ( and plateau tiger salamander (), Siamese algae-eater influenza-like virus in Siamese algae-eater fish () and chum salmon influenza-like virus in chum salmon (). Similarly, we identified two influenza-like viruses of amphibians that fell as sister lineages to influenza D virus: cane toad influenza-like virus and the ornate chorus frog influenza-like virus, in the cane toad ( and ornate chorus frog (, respectively. Despite their divergent phylogenetic positions, these viruses retained segment conservation and splicing consistent with transcriptional regulation in influenza B and influenza D viruses, and were detected in respiratory tissues. These data suggest that influenza viruses have been associated with vertebrates for their entire evolutionary history.

摘要

流感病毒(家族)感染多种脊椎动物,包括鸟类、人类和其他哺乳动物。最近的宏转录组学研究在两栖动物、鱼类和无颚脊椎动物中发现了不同的流感病毒,表明这些病毒可能广泛分布。我们试图通过分析公开可用的 RNA 测序数据来识别其他脊椎动物的流感样病毒。因此,通过数据挖掘,我们鉴定了五种不同的脊椎动物流感样病毒的完整编码片段。其中三种与乙型流感病毒形成姐妹谱系:墨西哥步行鱼中的蝾螈流感样病毒(和高原虎蝾螈(),暹罗食藻鱼中的暹罗食藻鱼流感样病毒(和大麻哈鱼中的大麻哈鱼流感样病毒()。同样,我们鉴定了两种与乙型流感病毒形成姐妹谱系的两栖动物流感样病毒:蟾蛙流感样病毒和华丽合唱蛙流感样病毒,分别在蟾蛙(和华丽合唱蛙(中。尽管它们的系统发育位置不同,但这些病毒保留了与乙型流感病毒和乙型流感病毒转录调控一致的片段保守性和剪接,并且在呼吸道组织中检测到。这些数据表明,流感病毒在其整个进化历史中一直与脊椎动物有关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/54e1/7551885/2f38f82a8009/viruses-12-01042-g001.jpg

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