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Alexey Markin¹, Catherine A Macken², Amy L Baker¹

¹Virus and Prion Research Unit, National Animal Disease Center, USDA-ARS, Ames, Iowa 50010, USA.

Molecular biology and evolution

|August 12, 2025

概括

一个新的工具,TreeSort,准确地识别流感A病毒重组事件. 禽流感病毒表现出比人类或猪菌株更多的重组,特定的亚型表现出频繁的遗传混合.

科学领域:

病毒学病毒学
计算生物学计算生物学
流行病学流行病学

背景情况:

流感A型病毒 (IAV) 的重组驱动病毒进化,物种间传播和流行病.
了解重组模式对于疫情准备和风险评估至关重要.

研究的目的:

介绍TreeSort,一种用于识别最近和祖先IAV重组事件的新型计算工具.
使用TreeSort.分析不同IAV亚型和主机的重新分类模式.

主要方法:

开发TreeSort,一种利用IAV基因段的遗传学分析来检测重组的工具.
将TreeSort应用到来自禽类,猪类和人类宿主的IAV全基因组的大数据集.
重组频率的量化和涉及的基因段的识别.

主要成果:

鸟类IAV的重组率高于人类和猪IAV,H7亚型显示最频繁的重组.
猪和人类的H3亚型显示出比H1亚型更多的重组.
高致病性禽流感H5N1类第2.3.4.4b表现出高度重组,而表面蛋白质基因 (HA,NA,MP) 与最小的重组共同进化,表明对病毒适应性的强有力的选择.

结论:

TreeSort 准确地识别 IAV 重组事件,使实时跟踪在主机内和跨主机.
这项研究揭示了IAV亚型和宿主之间明显的重组模式,突出了共同进化的病毒适应性中的作用.
该工具有助于识别具有大流行潜力的新型病毒,以加强风险评估.

关键词:

树木排序树木排序甲型流感是一类流感.人类遗传学是个学科.进行重新分类,重新分类.病毒的演变病毒的演变

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