Adeno-associated viral liposomes and their use in...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 5/10 (2006.01) A61K 9/127 (2006.01) A61K 31/70 (2006.01) A61K 35/14 (2006.01) A61K 39/385 (2006.01) A61K 48/00 (2006.01) C07K 14/47 (2006.01) C07K 14/55 (2006.01) C07K 14/705 (2006.01) C12N 15/86 (2006.01) C12N 15/88 (2006.01)

Patent

CA 2227065

A composition for genetic manipulation of cells comprises a liposome comprised of lipid material, and adeno-associated viral (AAV) material. Typically, the AAV material is plasmid, and comprises one or more terminal repeats of the AAV genome. Methods are disclosed for introducing DNA into cells using AAV/liposome complexes. The DNA is introduced and expressed in stem cells, T cells, primary tumor cells, tumor cell lines and dendritic cells or other antigen-presenting cells. Such transfected cells are used in therapeutic methods to treat subjects with cancer or microbial infections. Dendritic cells with DNA encoding tumor or viral antigens and are used to treat subjects with tumors or viral infections by administration in vivo or by activation of antigen-specific lymphocytes ex vivo followed by administration of those lymphocytes to the subject.

L'invention porte sur une composition servant à la manipulation génétique de cellules comprenant un liposome fait d'une matière lipidique et d'une matière virale adéno-associée (AAV). Cette dernière, normalement un plasmide, comporte une ou plusieurs répétitions terminales du génome du virus AAV. L'invention porte également sur des procédés d'introduction d'ADN dans des cellules à l'aide de complexes AAV/liposome. L'ADN est introduit et exprimé dans des cellules souches, dans des lymphocytes T, dans des cellules tumorales primaires, dans des lignées cellulaires tumorales, dans des cellules dendritiques ou autres cellules présentant des antigènes. De telles cellules transfectées sont utilisées à des fins thérapeutiques pour traiter des sujets atteints du cancer ou d'infections microbiennes. Les cellules dendritiques dont l'ADN code pour des antigènes tumoraux et viraux servent au traitement de sujets atteints de tumeurs ou d'infections virales par administration in vivo ou par activation ex vivo de lymphocytes spécifiques d'antigènes suivie de leur administration au patient.

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