Secreted viral proteins useful for vaccines and diagnostics

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/38 (2006.01) C07K 14/045 (2006.01) C12N 15/62 (2006.01) C12P 21/02 (2006.01)

Patent

CA 2196097

The present invention relates generally to modified secreted viral proteins, to the genes which express these proteins and to antibodies produced against such proteins, and to the use of these materials in diagnostic and vaccine applications. In particular, the present invention describes deletion of the transmembrane region only and retention of at least part of the cytoplasmic domain itself or fusion with at least part of an alternate cytoplasmic domain. The result will generally be the secretion of proteins which are normally membrane-bound (nonsecretory). This invention greatly increases the efficiency of secretion of the derivative protein. Specific viral proteins of interest include, but are not limited to, those from CMV, HSV, EBV, VZV, HCV, HIV, and influenza.

La présente invention se rapporte en général à des protéines sécrétées, modifiées, aux gènes qui expriment ces protéines et aux anticorps produits contre ces protéines, et à l'utilisation de ces matériaux dans les applications se rapportant aux diagnostics et aux vaccinations. La présente invention se rapporte notamment à la délétion de la région transmembranaire uniquement et à la rétention d'au moins une partie du domaine cytoplasmique lui-même ou la fusion d'au moins une partie d'un domaine cytoplasmique alterné. Ceci entraîne généralement la sécrétion des protéines qui sont normalement liées par une membrane (non sécrétrices). Cette invention accroît considérablement l'efficacité de la sécrétion de la protéine dérivée. Les protéines virales spécifiques à étudier sont celles provenant notamment, mais non exclusivement, du cytomégalovirus (CMV), du virus de l'herpès (HSV), du virus d'Epstein-Barr (EBV), de l'herpesvirus varicellae (VZV), du virus de l'hépatite C (HCV), du VIH et de la grippe.

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