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 language | English |
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Pages (from-to) | 5079-5083 |
Number of pages | 5 |
Journal | Journal of Virology |
Volume | 82 |
DOIs | |
Publication status | Published - May 2008 |
Keywords
- AIRWAY EPITHELIAL-CELLS
- A VIRUS
- MEMBRANE-FUSION
- EGG-ADAPTATION
- B VIRUSES
- SPECIFICITY
- REPLICATION
- HOST
- GALACTOSE
- RECOGNITION