Use of coiled-coil structural scaffold to generate...

C - Chemistry – Metallurgy – 07 – K

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C07K 14/315 (2006.01) A61K 39/09 (2006.01) A61P 31/04 (2006.01) C07K 7/06 (2006.01) C07K 7/08 (2006.01) G01N 33/68 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2410604

This invention relates to the use of a coiled-coil structural scaffold to generate structure-specific peptides, including synthetic peptides derived from naturally occurring proteins of various origin. The structure of the synthetic peptides utilizes a scaffold of heptad repeat units into which epitopes from coiled- coil regions of native proteins are spliced. In particular, the synthetic peptides may be based on microbial proteins, especially surface proteins, which occur naturally in the coiled-coil form such as pneumococcal surface proteins A and C. The synthetic peptides are immunogenic and can be used to elicit an immune response in an animal. Accordingly, they are useful as vaccines or to stimulate antibody production or cell-mediated immunity to the naturally occurring protein.

L'invention concerne l'utilisation d'un échafaudage structural à superhélice afin de générer des peptides spécifiques de structure, notamment des peptides synthétiques dérivés de protéines naturelles d'origines variées. La structure de ces peptides synthétiques fait appel à un échafaudage d'unités de répétitions heptades dans lesquelles des épitopes de régions à superhélice de protéines natives sont épissés. Plus spécifiquement, les peptides synthétiques peuvent être à base de protéines microbiennes, spécialement des protéines de surface, qui se trouvent naturellement sous forme de protéines à superhélice, telles que les protéines de surface pneumococciques A et C. Ces peptides synthétiques sont immunogènes et peuvent être utilisés pour susciter une réponse immunitaire chez un animal. En conséquence, ils sont utiles en tant que vaccins ou pour stimuler la production d'anticorps ou l'immunité à médiation assurée par une cellule à la protéine naturelle.

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