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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The suppression of colon cancer cell growth in nude mice by targeting beta-catenin/ TCF pathway.

The adenomatous polyposis coli ( APC) or beta-catenin genes are frequently mutated in colorectal cancers, leading to activation of downstream genes with beta-catenin/ T-cell factor (Tcf)-responsive promoters. We have developed a gene therapy approach selectively targeting colorectal cancer cells in which beta-catenin/ Tcf4 pathway is activated by using a recombinant adenovirus AdTOP-CMV-TK, which carries a herpes simplex virus thymidine kinase gene (HSV TK) under the control of a beta-catenin/ Tcf-response promoter linking to a minimum CMV promoter. AdTOP-CMV-TK and ganciclovir (GCV) treatment significantly suppressed the growth of human DLD-1 colon cancer cells in nude mice. Furthermore, no significant tumor suppression effect was observed in human hepatoma cell line SK-HEP-1, in which the beta-catenin/ Tcf pathway is not activated, as a control experiment. In summary, we demonstrated the selective targeting of colorectal cancers with activated beta-catenin by AdTOP-CMV-TK and GCV treatment in animal models, as well as its therapeutic potential for colon cancer metastasized to liver.[1]


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