1624-甲型流感病毒持续哺乳动物传播的基因组特征研究 episode artwork

EPISODE · Sep 28, 2026 · 20 MIN

1624-甲型流感病毒持续哺乳动物传播的基因组特征研究

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这项研究通过分析超过11万个甲型流感病毒(IAV)的全基因组,揭示了基因组GC含量下降与病毒在哺乳动物中实现持续传播之间的紧密联系。研究发现,能够在人类、猪、狗和马等宿主中长期存在的病毒谱系,其GC含量和CpG二核苷酸频率均呈现显著下降趋势,这与仅在禽类中传播或偶尔感染哺乳动物的病毒形成了鲜明对比。基于这一发现,研究人员开发了一种支持向量机(SVM)模型,该工具能以极高的准确率评估禽流感病毒转化为人类大流行毒株的潜力。通过对近期暴发的2.3.4.4b分支H5N1病毒进行检测,研究确认了部分感染水貂和人类的毒株已具备较低的GC含量。这项成果强调,基因组构成分析应被纳入全球流感风险评估体系,以提升对未来跨物种传播风险的预警能力。References:Ye Y, Shuai H, Song Y, et al. Genomic features associated with sustained mammalian transmission of avian influenza A viruses[J]. Nature Microbiology, 2026, 11(3): 802-814.前往小宇宙评论区与主播互动

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1624-甲型流感病毒持续哺乳动物传播的基因组特征研究

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