alexa Highly conserved protective epitopes on influenza B viruses.
Immunology

Immunology

Journal of Vaccines & Vaccination

Author(s): Cyrille Dreyfus, Nick S Laursen, Ted Kwaks, David Zuijdgeest, Reza Khayat

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Identification of broadly neutralizing antibodies against influenza A viruses has raised hopes for the development of monoclonal antibody–based immunotherapy and “universal” vaccines for influenza. However, a substantial part of the annual flu burden is caused by two cocirculating, antigenically distinct lineages of influenza B viruses. Here, we report human monoclonal antibodies, CR8033, CR8071, and CR9114, that protect mice against lethal challenge from both lineages. Antibodies CR8033 and CR8071 recognize distinct conserved epitopes in the head region of the influenza B hemagglutinin (HA), whereas CR9114 binds a conserved epitope in the HA stem and protects against lethal challenge with influenza A and B viruses. These antibodies may inform on development of monoclonal antibody–based treatments and a universal flu vaccine for all influenza A and B viruses.

This article was published in Science and referenced in Journal of Vaccines & Vaccination

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