Multiple promoter baculovirus expression system and...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/86 (2006.01) C07K 14/18 (2006.01) C07K 14/19 (2006.01) C12N 7/00 (2006.01) C12N 7/01 (2006.01) C12N 7/04 (2006.01) C12N 15/40 (2006.01) C12N 15/866 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2091886

The invention describes the construction of a genetically engineered virus or virus hybrid (e.g. animal or human pathogen) which is not capable of replicating itself but is essentially identical to the authentic pathogen in terms of structure and antigenicity. This baculovirus is constructed such that the non-structural viral genes are truncated, mutated or both and are located 3' and directly under the control of an early baculovirus gene promoter and the structural viral genes are located 3' and directly under the control of a late baculovirus gene promoter. This genetically baculovirus is therefore capable of temporal regulation and successive synthesis of non-structural proteins. This invention enables the design and construction of a virus particle or virus hybrid with specific antigenic properties which further allows for the safe and inexpensive production of vaccines and diagnostics.

L'invention décrit la construction d'un virus ou d'un virus hybride issu du génie génétique (p. ex., un pathogène s'attaquant aux animaux ou aux humains) qui est incapable de se répliquer lui-même mais qui a essentiellement la même structure et la même antigénicité que le pathogène authentique. Ce baculovirus est construit de telle manière que ses gènes non structuraux sont tronqués, mutés ou les deux et sont situés en 3' et directement sous le contrôle d'un promoteur précoce et que ses gènes de structure sont situés en 3' et directement sous le contrôle d'un promoteur tardif. Ce baculovirus issu du génie génétique est par conséquent capable de régulation temporelle et de synthèse réussie de protéines autres que les protéines de structure. L'invention permet de concevoir et de construire une particule virale ou un virus hybride doté de propriétés antigéniques spécifiques et ainsi de produire sans risque et à peu de frais des vaccins et des produits diagnostiques.

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