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Virol J 3 (2006) 70
Induction of neutralising antibodies by virus-like particles harbouring surface proteins from highly pathogenic H5N1 and H7N1 influenza viruses.
Judit Szécsi 1, 2, Bertrand Boson 1, 2, Per Johnsson 1, 2, Pia Dupeyrot-Lacas 1, 2, 3, Mikhail Matrosovich 4, Hans-Dieter Klenk 4, David Klatzmann 5, Viktor Volchkov 1, 2, François-Loïc Cosset 1, 2
(2006)

SUMMARY: There is an urgent need to develop novel approaches to vaccination against the emerging, highly pathogenic avian influenza viruses. Here, we engineered influenza viral-like particles (Flu-VLPs) derived from retroviral core particles that mimic the properties of the viral surface of two highly pathogenic influenza viruses of either H7N1 or H5N1 antigenic subtype. We demonstrate that, upon recovery of viral RNAs from a field strain, one can easily generate expression vectors that encode the HA, NA and M2 surface proteins of either virus and prepare high-titre Flu-VLPs. We characterise these Flu-VLPs incorporating the HA, NA and M2 proteins and we show that they induce high-titre neutralising antibodies in mice.
1 :  Virologie humaine
INSERM : U758 – IFR128 – École Normale Supérieure - Lyon
2 :  BioSciences Lyon-Gerland (BLG)
CNRS : IFR128 – INSERM : IFR128 – Institut national de la recherche agronomique (INRA) – Hospices Civils de Lyon – Université Claude Bernard - Lyon I – École Normale Supérieure - Lyon
3 :  Epixis SA
Epixis SA
4 :  Institut fur Virologie
Universitatsklinikum Giessen und Marburg
5 :  Biologie et thérapeutique des pathologies immunitaires (BTPI)
CNRS : UMR7087 – Université Pierre et Marie Curie (UPMC) - Paris VI
Sciences du Vivant/Médecine humaine et pathologie/Maladies infectieuses
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