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Researchers identify new anti-tumor gene
Date:12/16/2008

RICHMOND, Va. (Dec. 16, 2008) Researchers from Virginia Commonwealth University have identified a new anti-tumor gene called SARI that can interact with and suppress a key protein that is overexpressed in 90 percent of human cancers. The discovery could one day lead to an effective gene therapy for cancer.

According to Paul B. Fisher, M.Ph., Ph.D., professor and chair of the Department of Human and Molecular Genetics and director of the VCU Institute of Molecular Medicine in the VCU School of Medicine, and lead investigator of the study, this novel gene highlights a previously unrecognized molecular pathway underlying the anti-tumor action of interferon, INF.

In the study, published online in the Dec. 8 issue of the Proceedings of the National Academy of Sciences, researchers report the discovery of a new gene named SARI, which was uncovered by a powerful technique pioneered in the Fisher laboratory known as subtraction hybridization. SARI, which is induced by a potent immune system modulator called interferon, was found to suppress growth and survival of tumor cells by interfering with the action of cancer cell molecules that drive cell division and promote survival.

The investigators delivered SARI to cancer cells using a virus and the infected cancer cells subsequently stopped dividing and died. Since 90 percent of all cancer types rely on a similar mechanism to proliferate and evade destruction, Fisher noted that SARI could be an effective anti-cancer treatment for many tumors.

"Additionally, IFNs are powerful immune modulating agents that contribute to the immune response to cancer and they are effective inhibitors of new blood vessel formation, the process of angiogenesis, which is obligatory for the growth of both primary and metastatic cancers," said Fisher, who is the first incumbent of the Thelma Newmeyer Corman Endowed Chair in Cancer Research with the VCU Massey Cancer Center.

Currently, IFNs ar
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Contact: Sathya Achia Abraham
sbachia@vcu.edu
804-827-0890
Virginia Commonwealth University
Source:Eurekalert

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