Role of host-specific amino acids in the pathogenicity of avian H5N1 influenza viruses in mice.

Role of host-specific amino acids in the pathogenicity of avian H5N1 influenza viruses in mice.
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DOI:
10.1099/vir.0.018143-0
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发表时间:
2010-05
期刊:
The Journal of general virology
影响因子:
--
通讯作者:
Kawaoka Y
Kawaoka Y
中科院分区:
其他
文献类型:
--
作者:
Kim JH;Hatta M;Watanabe S;Neumann G;Watanabe T;Kawaoka Y

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Recent large-scale sequence analyses revealed ‘signature’ amino acids at specific positions in viral proteins that distinguish human influenza viruses from avian viruses. To determine the role of these host lineage-specific amino acids in the pathogenicity of H5N1 avian influenza viruses, we generated mutant viruses possessing signature amino acids in the PB2, PA, and NP of human influenza isolates (‘human-like amino acids’) in the genetic background of an avian H5N1 virus, and tested their pathogenicity in mice. We found that some of these mutants exhibited enhanced pathogenicity in mice, suggesting the involvement of these host lineage-specific amino acids in the pathogenicity of H5N1 avian influenza viruses in mammals.
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