Peptides derived from the attachment (g) protein of...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/45 (2006.01) A61K 39/155 (2006.01) A61K 48/00 (2006.01) C07K 14/135 (2006.01) C12N 15/62 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2302833

An altered G protein or portion thereof of RSV which retains immunogenicity and which, when incorporated into an immunogenic composition or vaccine and administered to a vertebrate, does not induce enhanced disease (e.g., atypical pulmonary inflammation such as pulmonary eosinophilia) upon subsequent infection with RSV, is disclosed. In a particular embodiment, the altered G protein comprises an alteration in the region from amino acid 184 to amino acid 198. Immunogenic compositions and vaccines comprising the altered RSV G protein, and optionally comprising RSV F protein, are also disclosed.

On décrit une protéine G modifiée ou une partie modifiée de cette dernière de VRS qui conserve l'immunogénicité et qui, lorsqu'elle est incorporée dans une composition ou un vaccin immunogénique et qu'elle est administrée à un vertébré n'induit pas une maladie accrue (par exemple une inflammation pulmonaire atypique telle que l'eosinophilie pulmonaire) suite à l'infection subséquente avec VRS. Dans une forme de réalisation particulière, la protéine G modifiée comprend une altération dans la région comprise entre l'acide aminé 184 et l'acide aminé 198. Des compositions et des vaccins immunogéniques contenant la protéine G modifiée VRS et contenant facultativement la protéine F VRS sont également présentés.

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