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Blocking cancer in its path: New cellular defect discovered
Date:3/16/2010

UCSF researchers have discovered that a key cellular defect that disturbs the production of proteins in human cells can lead to cancer susceptibility. The scientists also found that a new generation of inhibitory drugs offers promise in correcting this defect.

According to the study team, this discovery has broad clinical implications in the fight against cancer and could affect treatment of lymphoma and many other forms of the disease, including prostate cancer, breast cancer, colorectal cancer, brain cancer and multiple myeloma.

The findings are featured as the cover story in the March 16, 2010 issue of the scientific journal Cancer Cell (http://www.cell.com/cancer-cell/issue?pii=S1535-6108%2810%29X0004-6).

The discovery was made in the laboratory of UCSF faculty scientist Davide Ruggero, PhD, whose lab team is doing research in the burgeoning field of study on how defects in protein synthesis can lead to cancer susceptibility.

"Our work has the potential to create real, tangible benefits for the medical community," said Ruggero, an assistant professor of urology at the UCSF Helen Diller Family Comprehensive Cancer Center and senior author of the paper.

The researchers focused on a multi-protein unit known as mTOR, which stands for the "mammalian target of rapamycin." mTOR controls several important processes in mammalian cells, including cell survival and proliferation.

One of the most significant of these processes is the production of proteins within a cell, the control of which is known as translational control. mTOR integrates information about the cell's nutritional and energy needs, and prompts the cell to manufacture key proteins for cell growth. Cancer cells exploit this signal for their own growth.

According to the researchers, when the cells in the body lose the ability to control mTOR activi
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Contact: Elizabeth Fernandez
efernandez@pubaff.ucsf.edu
415-476-2557
University of California - San Francisco
Source:Eurekalert

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