Vaccine composition comprising r28 protein of streptococcus...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/31 (2006.01) A61K 39/09 (2006.01) C07K 14/315 (2006.01) C12N 15/11 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2372497

Use of a polypeptide which comprises (a) the sequence of SEQ ID No. 2, (b) a variant of (a) which is capable of generating a protective immune response to S. pyogenes, or (c) a fragment of (a) or (b) of at least 6 amino acids in length which is capable of generating a protective immune response to S. pyogenes, in the manufacture of medicament for use as a vaccine againstS. pyogenes. A pharmaceutical composition for use in vaccinating against S. pyogenes or Group B streptococcus comprises a polypeptide which comprises: (A) the amino acid sequence of SEQ ID No 2, (B) a variant of (A) which is capable of conferring protective immunity to S. pyogenes or Group B streptococcus, or (C) a fragment of (A) or (B) of at least 6 amino acids in length which is capable of conferring protective immunity to S. pyogenes or Group B streptococcus.

La présente invention porte sur l'utilisation d'un polypeptide qui contient (a) la séquence représentée par la SEQ ID NO 2, (b) un variant de (a) qui est capable de générer une réaction immunitaire de protection dirigée contre S.pyogenes, ou (c) un fragment de (a) ou de (b) d'une longueur d'au moins 6 acides aminés qui est capable de susciter une réaction immunitaire de protection dirigée contre S.pyogenes, et la préparation d'un médicament destiné à être utilisé en tant que vaccin dirigé contre S.pyogenes. Une composition pharmaceutique permettant de vacciner contre S.pyogenes ou les streptocoques du groupe B contient un polypeptide formé : (A) de la séquence d'acides aminés représentée par la SEQ ID No2, (B) d'un variant de (A) qui est capable de conférer une immunité protectrice contre S.pyogenes ou les streptocoques du groupe B, ou (C) un fragment de (A) ou de (B) d'une longueur d'au moins 6 acides aminés qui est capable de conférer une immunité protectrice contre S.pyogenes ou les streptocoques du groupe B.

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