Naturally Occurring Human Monoclonal Antibodies Neutralize both 1918 and 2009 Pandemic Influenza A (H1N1) Viruses
Author(s) -
Jens C. Krause,
Terrence M. Tumpey,
Chelsey J. Huffman,
Patricia McGraw,
Melissa B. Pearce,
Tshidi Tsibane,
Rong Hai,
Christopher F. Basler,
James E. Crowe
Publication year - 2009
Publication title -
journal of virology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.617
H-Index - 292
eISSN - 1070-6321
pISSN - 0022-538X
DOI - 10.1128/jvi.02184-09
Subject(s) - virology , biology , monoclonal antibody , hemagglutinin (influenza) , pandemic , virus , h5n1 genetic structure , influenza a virus , antigenic drift , antibody , orthomyxoviridae , hypervariable region , antigen , microbiology and biotechnology , covid-19 , immunology , infectious disease (medical specialty) , medicine , disease , pathology
The 2009 pandemic influenza A (H1N1) virus exhibits hemagglutinin protein sequence homology with the 1918 pandemic influenza virus. We found that human monoclonal antibodies recognized the Sa antigenic site on the head domains of both 1918 and 2009 hemagglutinins, a site that is hypervariable due to immune selection. These antibodies exhibited high potency against the 2009 virus in vitro, and one exerted a marked therapeutic effect in vivo.
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