Modified polysaccharides for conjugate vaccines

A - Human Necessities – 61 – K

Patent

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Details

A61K 39/385 (2006.01) A61K 39/02 (2006.01) A61P 31/04 (2006.01) A61P 37/04 (2006.01)

Patent

CA 2692069

The present invention relates to methods of manufacture of immunogenic glycoconjugates, in particular for use in pharmaceutical compositions for inducing a therapeutic immune response in a subject. The immunogenic glycoconjugates of the invention comprise one or more oligosaccharides or polysaccharides that are conjugated to one or more carrier proteins via an active aldehyde group. Accordingly, the invention provides methods of making (i) unsaturated microbial N-acyl derivative oligosaccharides or polysaccharides; (ii) novel conjugates of unsaturated N-acyl derivatives; and (iii) glycoconjugate compositions comprising conjugate molecules of fragments of microbial unsaturated N-acyl derivatives that serve as a covalent linker to one or more proteins. The invention further encompasses the use of the immunogenic glycoconjugates pharmaceutical compositions for the prevention or treatment of an infectious disease.

La présente invention concerne des procédés de fabrication de glycoconjugués immunogènes, destinés en particulier à être utilisés dans des compositions pharmaceutiques afin d'induire une réponse immune thérapeutique chez un sujet. Les glycoconjugués immunogènes de l'invention comprennent un ou plusieurs oligosaccharides ou polysaccharides qui sont conjugués à une ou plusieurs protéines-supports par l'intermédiaire d'un groupe aldéhyde actif. En conséquence, l'invention concerne des procédés de réalisation des éléments suivants : (i) des oligosaccharides ou des polysaccharides dérivés de N-acyle microbiens insaturés; (ii) de nouveaux conjugués de dérivés de N-acyle insaturés; et (iii) des compositions de glycoconjugués comprenant des molécules conjuguées de fragments de dérivés de N-acyle insaturés microbiens qui servent de lieurs covalents à une ou plusieurs protéines. L'invention concerne en outre l'utilisation de compositions pharmaceutiques de glycoconjugués immunogènes dans la prévention ou le traitement d'une maladie infectieuse.

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