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RNA interference stops colon cancer spread in mice

of colorectal cancer to the liver.

Evers and the paper's other authors -- UTMB research fellows Piotr Rychahou and Lindsey Jackson and pathology professor Srinivasan Rajaraman -- also conducted a detailed analysis of the PI3K pathway's components and did experiments to determine how their siRNAs would affect colorectal cancer cell cultures. Scientists have already developed chemical inhibitors to attack the pathway (some of which are now in clinical trials), but toxic side effects limit their use.

"When we treat with siRNA and then follow the treatment with standard chemotherapeutic agents, we can markedly increase the rate at which cancer cells are killed," Evers said. "Since we have not seen any toxicity with these siRNAs in our mice, we think we can potentially also use them as a way to sensitize tumors and launch a combined attack that will allow us to achieve much better results with reduced side effects."


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Source:University of Texas Medical Branch at Galveston


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