Selectable marker for genetically engineered cells and tissues

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/86 (2006.01) C12N 9/78 (2006.01) C12N 15/63 (2006.01) C12N 15/65 (2006.01) G01N 33/50 (2006.01) A61K 48/00 (2006.01)

Patent

CA 2434387

The present invention relates to selectable marker gene, method of producing genetically modified cells allowing expression of a bicistronic vector, and ex vivo gene therapy applications. The invention also relates to selection of genetically engineered cells from the mixed population, prior to implantation in vivo. The invention describes the human cytidine deaminase (CD) gene as an ex vivo dominant selectable marker in gene-modified primary cells with cytosine nucleoside analogues. A bicistronic retrovector comprising the human CD coding sequence and the enhanced green fluorescent protein (GFP) reporter gene is used for the transduction of cells. The invention describes the introduction of CD gene in cell and gene therapy applications for the ex vivo dominant selection of genetically engineered cells.

L'invention concerne un gène marqueur susceptible d'être sélectionné, un procédé de production de cellules génétiquement modifiées permettant l'expression d'un vecteur bicistronique et des applications en thérapie génique ex vivo. L'invention concerne également la sélection de cellules génétiquement modifiées provenant de population mixte, avant leur implantation in vivo. L'invention concerne en outre le gène humain de la cytidine déaminase (CD) tenant lieu de marqueur dominant susceptible d'être sélectionné ex vivo dans des cellules primaires à gène modifié avec des analogues de la cytosine nucléoside. Un rétrovecteur bicistronique comprenant la séquence codant la CD humaine et le gène rapporteur de la protéine fluorescente verte (GFP) améliorée est utilisé dans la transduction de cellules. L'invention concerne finalement l'introduction du gène CD dans les applications en thérapie cellulaire et génique pour la sélection dominante ex vivo de cellules génétiquement modifiées.

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