Immunogenic compositions

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/62 (2006.01) A61K 38/16 (2006.01) A61K 39/00 (2006.01) A61K 39/385 (2006.01) A61K 39/39 (2006.01) A61P 35/00 (2006.01) C07K 14/315 (2006.01) C07K 14/33 (2006.01) C07K 19/00 (2006.01) C12N 9/80 (2006.01) C12N 15/31 (2006.01) C12N 15/55 (2006.01)

Patent

CA 2487831

The present invention relates fusion partners which act as immunological fusion partners, as expression enhancers, and preferably to fusion partners having both functions. In particular the fusion partners contain a so-called choline binding domain, for example fusions comprising LytA from Streptococcus pneumoniae, or the pneumococcal phage CP1 lysozyme (CPL1) wherein the choline binding domain is modified to include a heterologous T-helper epitope, and are fused to antigens, particularly poorly immunogenic antigens such as self- antigens, eg tumour specific or tissue specific antigens. The invention also relates to fusion proteins containing them, to their manufacture, to their use in immunogenic compositions and vaccines and to their use in medicines.

L'invention concerne des partenaires de fusion qui font office de partenaires de fusion immunologiques, d'activateurs d'expression, et de préférence des partenaires de fusion possédant les deux fonctions. Plus spécifiquement, les partenaires de fusion contiennent un domaine appelé domaine de fixation de la choline, par exemple des fusions comprenant du LytA de Streptoccus pneumoniae, ou le lysozyme CP1 phage pneumococcique (CPL1), le domaine de fixation de la choline étant modifié de sorte qu'il comprenne un épitope T auxiliaire hétérologue. Ils sont de plus fusionnés avec des antigènes, notamment des antigènes particulièrement peu immunogènes, tels que des auto-antigènes, par exemple des antigènes spécifiques de tissu ou de tumeur. L'invention se rapporte à des protéines de fusion les contenant, à leur fabrication, à leur utilisation dans des compositions immunogènes et des vaccins et à leur utilisation dans des médicaments.

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