Mammalian and human rec2

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/52 (2006.01) A01K 67/027 (2006.01) C07K 16/40 (2006.01) C12N 5/10 (2006.01) C12N 9/00 (2006.01) C12N 15/85 (2006.01) C12Q 1/68 (2006.01)

Patent

CA 2265492

The invention concerns mammalian recombinase genes (REC2) and their promoters. Over expression of REC2 in a cell is found to facilitate homologous recombination, particularly homologous recombination using a DNA/RNA chimeric oligonucleotide and to sensitize a cell to the apoptotic effects of irradiation. The REC2 promoter, in combination with a strong enhancer, e.g., a SV40 enhancer, was found to be a strong promoter following irridiation of the cells. A radiation induceable promoter can be used to sensitize a cell to radiation treatment by operably linking the radiation induceable promoter to a gene whose expression converts a prodrug to a drug such as a herpes thymidine kinase gene.

L'invention concerne des gènes de recombinase mammalienne (REC2) et leurs promoteurs. On a constaté que la surexpression de REC2 dans une cellule facilite la recombinaison homologue, en particulier la recombinaison homologue au moyen d'un oligonucléotide chimère d'ARN/ADN et sensibilise une cellule aux effets apoptotiques de l'irradiation. On a également découvert que le promoteur de REC2, combiné à un activateur puissant, par exemple le SV40, est un promoteur puissant après irradiation des cellules. Un promoteur induit par rayonnement peut être utilisé pour sensibiliser une cellule à une thérapie par rayonnement, par liaison active du promoteur induit par rayonnement à un gène dont l'expression permet de transformer un promédicament en médicament, tel qu'un gène de la thymidine kinase herpétique.

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