Method for treatment of cancer and infectious diseases and...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/85 (2006.01) A61K 31/70 (2006.01) A61K 35/12 (2006.01) A61K 39/00 (2006.01) A61K 39/02 (2006.01) A61K 39/12 (2006.01) A61K 47/48 (2006.01) A61K 48/00 (2006.01) C07K 7/06 (2006.01) C07K 7/08 (2006.01) C07K 14/47 (2006.01) C12N 15/12 (2006.01) C12N 15/62 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2229595

Administration of expressible polynucleotides encoding eukaryotic heat shock proteins to mammalian cells leads to the stimulation of an immune response to antigens present in those cells. This makes it possible to stimulate an immune response to target antigens, including target tumor antigens or antigens associated with an infectious disease, without having to isolate a unique antigen or antigen-associated heat shock protein for each target antigen by administering to a mammalian subject or to a group of mammalian cells containing the antigen, an expressible polynucleotide encoding a heat shock protein. The expressed heat shock protein may have the same structure as native heat shock proteins, or may be a modified form adapted to control the trafficking of the expressed heat shock protein within the cells.

L'administration de polynucléotides expressibles codant des protéines eucaryotes à des cellules de mammifère conduit à la stimulation d'une réponse immunitaire aux antigènes présents dans ces cellules. Cela permet de stimuler une réponse immunitaire à des antigènes cibles, y compris des antigènes tumoraux cibles ou des antigènes associés à une maladie infectieuse, sans avoir à isoler un antigène unique ou une protéine de stress associée à un antigène pour chaque antigène cible en administrant à un mammifère ou à un groupe de cellules de mammifère contenant l'antigène un polynucléotide expressible codant une protéine de stress. La protéine de stress exprimée peut avoir la même structure que des protéines de stress natives, ou peuvent être une forme modifiée adaptée pour contrôler la circulation de la protéine de stress exprimée au sein des cellules.

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