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TitleBroadly protective murine monoclonal antibodies against influenza B virus target highly conserved neuraminidase epitopes.
Journal, issue, pagesNat Microbiol, Vol. 2, Issue 10, Page 1415-1424, Year 2017
Publish dateAug 21, 2017
AuthorsTeddy John Wohlbold / Kira A Podolsky / Veronika Chromikova / Ericka Kirkpatrick / Veronica Falconieri / Philip Meade / Fatima Amanat / Jessica Tan / Benjamin R tenOever / Gene S Tan / Sriram Subramaniam / Peter Palese / Florian Krammer /
PubMed AbstractA substantial proportion of influenza-related childhood deaths are due to infection with influenza B viruses, which co-circulate in the human population as two antigenically distinct lineages defined ...A substantial proportion of influenza-related childhood deaths are due to infection with influenza B viruses, which co-circulate in the human population as two antigenically distinct lineages defined by the immunodominant receptor binding protein, haemagglutinin. While broadly cross-reactive, protective monoclonal antibodies against the haemagglutinin of influenza B viruses have been described, none targeting the neuraminidase, the second most abundant viral glycoprotein, have been reported. Here, we analyse a panel of five murine anti-neuraminidase monoclonal antibodies that demonstrate broad binding, neuraminidase inhibition, in vitro antibody-dependent cell-mediated cytotoxicity and in vivo protection against influenza B viruses belonging to both haemagglutinin lineages and spanning over 70 years of antigenic drift. Electron microscopic analysis of two neuraminidase-antibody complexes shows that the conserved neuraminidase epitopes are located on the head of the molecule and that they are distinct from the enzymatic active site. In the mouse model, one therapeutic dose of antibody 1F2 was more protective than the current standard of treatment, oseltamivir, given twice daily for six days.
External linksNat Microbiol / PubMed:28827718 / PubMed Central
MethodsEM (single particle)
Resolution25.0 Å
Structure data

EMDB-8768:
Negative stain of influenza B virus recombinant neuraminidase bound to 1F2 Fab
Method: EM (single particle) / Resolution: 25.0 Å

EMDB-8769:
Negative stain of influenza B virus recombinant neuraminidase bound to 4F11 Fab
Method: EM (single particle) / Resolution: 25.0 Å

EMDB-8770:
Negative stain of influenza B virus recombinant neuraminidase
Method: EM (single particle) / Resolution: 25.0 Å

Source
  • Influenza B virus (B/Malaysia/2506/2004)

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