Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
3430921 | Virus Research | 2007 | 6 Pages |
Abstract
Influenza virus-specific CD4+ T-helper cells were cloned that recognized a virus strain isolated in 1981, but that failed to recognize more recent strains. The HLA-DR*1601-restricted epitope recognized was located in the hemagglutinin (HA99–113) and the naturally occurring A → V substitution at position 106 was responsible for abrogating the recognition by HA99–113-specific CD4+ T-cells. This amino acid substitution was found in influenza A/H3N2 viruses that circulated between 1999 and 2005 and did not affect recognition by virus-specific antibodies. It was speculated that influenza viruses could evade recognition by virus-specific CD4+ T-cells, at least temporarily.
Keywords
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Immunology and Microbiology
Virology
Authors
Eufemia G.M. Berkhoff, Martina M. Geelhoed-Mieras, Marcel Jonges, Derek J. Smith, Ron A.M. Fouchier, Albert D.M.E. Osterhaus, Guus F. Rimmelzwaan,