Model for studying the role of genes in tumor resistance to...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/867 (2006.01) A61K 31/436 (2006.01) A61P 35/00 (2006.01) C12N 5/00 (2006.01) C12N 15/12 (2006.01) C12N 15/54 (2006.01) C12Q 1/00 (2006.01) C12Q 1/02 (2006.01) C12Q 1/68 (2006.01) G01N 33/50 (2006.01)

Patent

CA 2516022

The invention provides the components of in vivo and in vitro systems and methods which use them to study the effects of altered expression of a gene activity, such as the human akt, bcl-2, eIF4E or PTEN activities, on the descendants of stem cells that have been engineered to give rise to hematopoietic tumorigenic or tumor cells, such as lymphomas, with a high frequency. The present invention provides vectors, cells and mammals, and methods which in part depend on such products, useful for understanding tumorigenesis and its treatments, and in particular, for identifying and studying inhibitors and activators associated with tumor cell growth and growth inhibition, cell death through apoptotic pathways, and changes in apoptotic pathway components that affect drug sensitivity and resistance in tumorigenic cells. Methods for identifying molecular targets for drug screening, identifying interacting gene activities, for identifying therapeutic treatments and for identifying candidates for new therapeutic treatments are provided.

La présente invention concerne les éléments de systèmes in vivo et in vitro et des techniques qui les utilisent pour étudier les effets de l'expression modifiée d'une activité de gène, telles que ses activités de gènes akt, bcl-2, eIF4E ou PTEN humains, sur les descendants de cellules souches qui ont été modifiées de façon à donner des cellules hématopoïétiques cancérigènes ou des cellules tumorales, telles que des lymphomes, avec une fréquence élevée. La présente invention concerne des vecteurs, des cellules et des mammifères, des techniques qui dépendent en partie de ces produits, qui permettent de comprendre la genèse des tumeurs et le traitement de celle-ci et, en particulier, d'identifier et d'étudier des inhibiteurs et des activateurs associés à la croissance de cellules tumorales et à l'inhibition de cette croissance, la morts cellulaire via des voies d'apoptose et, des changements d'éléments de voie d'apoptose qui affectent la sensibilité au médicament et la résistance dans les cellules cancérigènes. Cette invention concerne aussi des techniques d'identification de cibles moléculaires destinées à la recherche de médicaments, d'identification d'activités de gènes d'interaction, d'identification de traitements thérapeutiques et d'identification de candidats pour des traitements thérapeutiques.

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