A highly conserved neutralizing epitope on group 2 influenza A viruses.

A highly conserved neutralizing epitope on group 2 influenza A viruses.
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DOI:
10.1126/science.1204839
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发表时间:
2011-08-12
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Goudsmit J
Goudsmit J
中科院分区:
其他
文献类型:
--
作者:
Ekiert DC;Friesen RH;Bhabha G;Kwaks T;Jongeneelen M;Yu W;Ophorst C;Cox F;Korse HJ;Brandenburg B;Vogels R;Brakenhoff JP;Kompier R;Koldijk MH;Cornelissen LA;Poon LL;Peiris M;Koudstaal W;Wilson IA;Goudsmit J

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Current flu vaccines provide only limited coverage against seasonal strains of influenza viruses. The identification of VH1-69 antibodies that broadly neutralize almost all influenza A group 1 viruses constituted a breakthrough in the influenza field. Here we report the isolation and characterization of a human monoclonal antibody CR8020 with broad neutralizing activity against most group 2 viruses, including H3N2 and H7N7, which cause severe human infection. The crystal structure of Fab CR8020 with the 1968 pandemic H3 hemagglutinin (HA) reveals a highly conserved epitope in the HA stalk distinct from the epitope recognized by the VH1-69 group 1 antibodies. Thus, a cocktail of two antibodies may be sufficient to neutralize most influenza A subtypes and, hence, enable development of a universal flu vaccine and broad spectrum antibody therapies.
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