ArticleNational science review2026
Heterogeneous viral-host response at single-cell resolution and viral adaptive mutational atlas in birds and mammals upon H5 influenza virus infection.
Article in National science review, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
H5 highly pathogenic avian influenza viruses (HPAIVs) are prevalent in birds, causing infection in over 60 mammalian species worldwide. However, species-specific viral-host response at the single-cell level and within-host evolution upon H5 HPAIV infection are poorly understood. Here, by integrating spatial transcriptomics and single-cell genomics technologies, we present a comprehensive single-cell transcriptomic landscape of 1499 669 cells in the lungs from birds (chickens, ducks, and pigeons) and mammals (mice and pigs) upon H5 HPAIV infection. H5 HPAIV primarily infected avian endothelial cells and mammalian epithelial cells, respectively. Among the single-cell transcriptomic lung landscape, H5 HPAIV infection induced significant inflammation in fibroblasts and the shedding of alveolar epithelial cells of chickens upon infection, while the expression levels of cytokine- and inflammation-related genes slightly decreased in fibroblasts and endothelial cells of infected ducks and pigeons, respectively. However, mice only exhibited significantly antiviral response in macrophages and neutrophils, while antiviral response was elevated in most subtype cells of pigs upon infection. Notably, we identified 19 viral non-synonymous intrahost single nucleotide variants in the infected birds and mammals and assessed their molecular characterizations
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