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Princeton scientists find way to catalog all that goes wrong in a cancer cell
Date:12/10/2009

A team of Princeton University scientists has produced a systematic listing of the ways a particular cancerous cell has "gone wrong," giving researchers a powerful tool that eventually could make possible new, more targeted therapies for patients.

"For a very long time, cancer therapies have been developed by trial and error to essentially kill a broad variety of rapidly dividing cells, good and bad -- that's why they have massive side effects," said Saeed Tavazoie, a professor in the Department of Molecular Biology and the Lewis-Sigler Institute for Integrative Genomics, who led the research. "The goal of cancer biology is to come up with therapies that are much more rational in terms of attacking the pathways that have been co-opted by cancer cells. The big challenge is to discover these pathways so that we can restore them to their normal state."

Writing in the Dec. 11 issue of Molecular Cell, Tavazoie, along with his colleagues Hani Goodarzi, a graduate student in molecular biology, and Olivier Elemento, a former postdoctoral researcher in the department, found they were able to systematically categorize and pinpoint the alterations in cancer pathways and to reveal the underlying regulatory code in DNA. Elemento is now on the faculty of Weill Cornell Medical College in New York.

"We are discovering that there are many components inside the cell that can get mutated and give rise to cancer," Tavazoie said. "Future cancer therapies have to take into account these specific pathways that have been mutated in individual cancers and treat patients specifically for that."

The researchers developed an algorithm, a problem-solving computer program that sorts through the behavior of each of 20,000 genes operating in a tumor cell. When genes are turned "on," they activate or "express" proteins that serve as signals, creating different pathways of action. Cancer cells often act in aberrant ways, and the algorithm can detect t
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Contact: Kitta MacPherson
kittamac@princeton.edu
609-258-5729
Princeton University
Source:Eurekalert

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