Avian ANP32B does not support influenza A virus polymerase and influenza A virus relies exclusively on ANP32A in chicken cells
Avian ANP32B does not support influenza A virus polymerase and influenza A virus relies exclusively on ANP32A in chicken cells
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禽类 ANP32B 不支持甲型流感病毒聚合酶,而甲型流感病毒仅依赖鸡细胞中的 ANP32A
DOI:
10.1101/512012
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Long J
中科院分区:
文献类型:
--
作者:
Long J
Influenza A viruses (IAV) are subject to species barriers that prevent frequent zoonotic transmission and pandemics. One of these barriers is the poor activity of avian IAV polymerases in human cells. Differences between avian and mammalian ANP32 proteins underlie this host range barrier. Human ANP32A and ANP32B homologues both support function of human-adapted influenza polymerase but do not support efficient activity of avian IAV polymerase which requires avian ANP32A. We show here that avian ANP32B is evolutionarily distinct from mammalian ANP32B, and that chicken ANP32B does not support IAV polymerase activity even of human-adapted viruses. Consequently, IAV does not replicate in chicken cells that lack ANP32A. Amino acid differences in LRR5 domain accounted for the inactivity of chicken ANP32B. Transfer of these residues to chicken ANP32A abolished support of IAV polymerase. Understanding ANP32 function will help develop antiviral strategies and aid the design of influenza virus resistant genome edited chickens.
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DOI:
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