Chimeric lyssavirus nucleic acids and polypeptides

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/47 (2006.01) A61K 39/205 (2006.01) C07K 14/145 (2006.01) C12N 15/62 (2006.01) A61K 35/00 (2006.01)

Patent

CA 2370278

The present invention provides chimeric nucleic acids, preferably contained on an expression vector, that encode chimeric immunogenic polypeptides. The nucleic acids encode at least site III of a lyssavirus glycoprotein, which has been found to improve the immunogenicity of lyssavirus epitopes for protection from rabies. The chimeric nucleic acids and proteins can also contain antigenic determinants for epitopes other than those of lyssavirus. Thus, the invention provides chimeric nucleic acids and polypeptides that elicit a strong immune response to multiple antigens. Use of the methods of the present invention permits DNA vaccination without the need to supply multiple antigens on separate DNA molecules.

La présente invention porte sur des acides nucléiques chimères, de préférence contenus sur un vecteur d'expression, qui codent des polypeptides immunogéniques chimères. Les acides nucléiques codent au moins le site III d'une glycoprotéine de lyssavirus qui s'avère améliorer l'immunogénicité des épitopes du lyssavirus dans la protection contre la rage. Les acides nucléiques chimères et les protéines peuvent également contenir des déterminants antigéniques pour des épitopes autres que ceux du lyssavirus. Cette invention concerne des acides nucléiques et des polypeptides chimères qui déclenchent une forte réponse immunitaire contre plusieurs antigènes. L'utilisation des procédés de cette invention permet une vaccination génétique sans avoir besoin d'amener plusieurs antigènes sur des molécules d'ADN séparées.

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