Chimeric viruses presenting non-native surface proteins and...

A - Human Necessities – 61 – K

Patent

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Details

A61K 39/00 (2006.01) A61K 39/15 (2006.01)

Patent

CA 2631812

The present invention provides chimeric negative-stand RNA viruses that allow a subject, e.g., an avian, to be immunized against two infectious agents by using a single chimeric virus of the invention. In particular, the present invention provides chimeric influenza viruses engineered to express and incorporate into their virions a fusion protein comprising an ectodomain of a protein of an infectious agent and the transmembrane and cytoplasmic domain of an influenza virus protein. Such chimeric viruses induce an immune response against influenza virus and the infectious agent. The present invention also provides chimeric Newcastle Disease viruses (NDV) engineered to express and incorporate into their virions a fusion protein comprising the ectodomain of a protein of an infectious agent and the transmembrane and cytoplasmic domain of an NDV protein. Such chimeric viruses induce an immune response against NDV and the infectious agent.

La présente invention a trait à des virus à ARN chimérique de support négatif qui permettent l'immunisation d'un sujet, par exemple, un oiseau, contre deux agents infectieux à l'aide d'un seul virus de l'invention. En particulier, la présente invention a trait à des virus chimériques de la grippe génétiquement modifiés pour exprimer et incorporer dans leurs virions une protéine hybride comportant un ectodomaine d'une protéine d'un agent infectieux et le domaine transmembranaire et cytoplasmique d'une protéine du virus de la grippe. De tels virus chimériques induisent une réponse immunitaire contre le virus de la grippe et l'agent infectieux. La présente invention a également trait à des virus chimériques de la maladie de Newcastle (NDV) génétiquement modifiés pour exprimer et incorporer dans leurs virions une protéine hybride comportant l'ectodomaine d'une protéine d'un agent infectieux et le domaine transmembranaire et cytoplasmique d'une protéine du virus NDV. De tels virus chimériques induisent une réponse immunitaire contre le virus NDV et l'agent infectieux.

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