Infectivity studies of Influenza Virus Hemagglutinin Receptor Binding-site Mutants in Mice

J Meisner, KJ Szretter, KC Bradley, WA Langley, ZN Li, BJ Lee, S Theonnes, J Martin, JJ Skehel, Rupert James Martin Russell, JM Katz, DA Steinhauer

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

The replicative properties of influenza virus hemagglutinin (RA) mutants with altered receptor binding characteristics were analyzed following intranasal inoculation of mice. Among the mutants examined was a virus containing a Y98F substitution at a conserved position in the receptor binding site that leads to a 20-fold reduction in binding. This mutant can replicate as well as wild-type (WT) virus in MDCK cells and in embryonated chicken eggs but is highly attenuated in mice, exhibiting titers in lungs more than 1,000-fold lower than those of the WT. The capacity of the Y98F mutant to induce antibody responses and the structural locations of HA reversion mutations are examined.

Original languageEnglish
Pages (from-to)5079-5083
Number of pages5
JournalJournal of Virology
Volume82
DOIs
Publication statusPublished - May 2008

Keywords

  • AIRWAY EPITHELIAL-CELLS
  • A VIRUS
  • MEMBRANE-FUSION
  • EGG-ADAPTATION
  • B VIRUSES
  • SPECIFICITY
  • REPLICATION
  • HOST
  • GALACTOSE
  • RECOGNITION

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