Compositions and methods for the treatment and prevention of...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/12 (2006.01) A61K 31/70 (2006.01) A61K 38/44 (2006.01) A61K 39/395 (2006.01) A61K 48/00 (2006.01) C07K 14/47 (2006.01) C07K 16/18 (2006.01) C07K 16/28 (2006.01) C12N 5/10 (2006.01) G01N 33/50 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2323074

The invention relates to methods for the isolation of metastatic sequences and the isolated sequences. Cells from a cell line or an animal tissue are treated to form a cell line predisposed to cancer. Treated cells are implanted in an animal and incubated for a period of time sufficient for the cells to proliferate and develop malignant transplants. RNA from the malignant transplant and the primary tumor are analyzed by differential display polymerase chain reaction. Differentially expressed genes are cloned, reanalyzed, and sequenced. These genes and sequences can be used as probes in the diagnosis of neoplastic disorders, as probes to isolate metastatic sequences and as a therapeutic agent in the treatment of neoplastic disorders. The metastatic sequence may be a dominant metastatic sequence or a recessive metastatic sequence.

L'invention se rapporte à des méthodes d'isolement de séquences métastatiques ainsi qu'à des séquences isolées. On traite des cellules d'une lignée cellulaire ou un tissu animal de manière à fabriquer une lignée cellulaire prédisposée au cancer. On implante les cellules traitées chez un animal et on les laisse incuber pendant un laps de temps suffisamment long pour que les cellules prolifèrent et développent des transplants malins. On analyse l'ARN du transplant malin et de la tumeur primaire au moyen d'une amplification enzymatique à présentation différentielle. Les gènes exprimés de façon différentielle sont clonés, ré-analysés et séquencés. Il est possible d'utiliser ces gènes et séquences en tant que sondes pour le diagnostic des troubles néoplasiques, en tant que sondes destinées à isoler des séquences métastatiques et en tant qu'agents thérapeutiques pour le traitement des troubles néoplasiques. La séquence métastatique peut être une séquence métastatique dominante ou une séquence métastatique récessive.

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