Immunomodulation by genetic modification of dendritic cells...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 7/00 (2006.01) A61K 35/00 (2006.01) A61K 48/00 (2006.01) C07K 16/08 (2006.01) C07K 16/28 (2006.01) C12N 5/06 (2006.01) C12N 15/63 (2006.01) C12N 15/85 (2006.01) C12N 15/861 (2006.01)

Patent

CA 2344655

A gene delivery vector is used to generate genetically modified dendritic cells and B-cells central to the immune system. As a result, genetic modification of cells bearing the CD40 target antigen on its surface can be used to modulate immunity. Previously, both dendritic cells and B-cells have been resistant to gene transfer. The present invention serves to mediate dramatic enhancements in gene transfer to these cell types. Simultaneous with gene transfer, the vector system described herein matures dendritic cells and B-cells to a more potent immunoregulatory status. This invention provides technology for genetic manipulation of dendritic cells and B-cells.

L'invention concerne un vecteur de fourniture de gènes utilisé pour générer des cellules dendritiques et des cellules B génétiquement modifiées essentielles au système immunitaire. Par conséquent, on peut utiliser une modification génétique de cellules portant l'antigène cible CD40 à leur surface pour moduler l'immunité. Auparavant, les cellules dendritiques et les cellules B étaient toutes résistantes au transfert de gènes. La présente invention permet de présenter des améliorations fondamentales dans le transfert de gènes dans ce type de cellules. En même temps que le transfert de gènes, le système de vecteur selon l'invention porte à maturation les cellules dendritiques et les cellules B qui acquièrent un statut d'immunomodulation plus puissant. La présente invention concerne également une technique de manipulation génétique de cellules dendritiques et de cellules B.

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