Raccoon poxvirus expressing genes of feline antigens

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/863 (2006.01) A61K 39/21 (2006.01) A61K 39/245 (2006.01) A61K 39/295 (2006.01) C12N 15/63 (2006.01)

Patent

CA 2681183

The present invention relates to new recombinant raccoon poxvirus vectors comprising two or more exogenous nucleic acid molecules, each encoding at least one feline protein, wherein at least two of the nucleic acid molecules are inserted into the hemagglutinin (ha) locus or the thymidine kinase (tk) locus, or at least one of the nucleic acid molecules is inserted into each of the hemagglutinin and thymidine kinase loci. Described herein are monovalent and polyvalent recombinant feline vaccines that encompass an immunologically effective amount of the recombinant raccoon poxvirus vectors and, optionally, a suitable carrier or diluent. The vaccine of this invention optionally includes additional feline antigens to provide broad spectrum protection to cats against a variety of feline pathogens. The invention further concerns the method for inducing a protective immune response to the feline pathogens in a cat by administering the recombinant vaccines.

La présente invention concerne de nouveaux vecteurs de proxivirus recombiné de raton laveur comprenant deux molécules exogènes d'acide nucléique ou plus, qui codent chacune au moins pour une protéine de félin, deux au moins des molécules d'acide nucléique étant insérées dans le locus de l'hémagglutinine (ha) ou le locus de la thymidine kinase (tk), ou bien l'une au moins des molécules d'acide nucléique étant insérée dans le locus de l'hémagglutinine et le locus de la thymidine kinase. L'invention porte sur des vaccins recombinés de félin monovalents ou polyvalents qui comprennent une quantité immunologiquement active de vecteurs de proxivirus recombiné de raton laveur et, éventuellement, un porteur ou un diluant approprié. Le vaccin de la présente invention comprend éventuellement des antigènes supplémentaires de félin afin d'offrir aux chats une protection à spectre large contre divers pathogènes félins. En outre, l'invention se rapporte au procédé induisant chez un chat une réponse immunitaire protectrice aux pathogènes félins par l'administration des vaccins recombinés.

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