Research Team Awarded $2.4M to Explore Weakness of Signaling Proteins in Cancer Genes

Released: 5-Dec-2012 11:00 AM EST
Source Newsroom: Rutgers Cancer Institute of New Jersey
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Rutgers Professor and Associate Director at The Cancer Institute of New Jersey Continues work with Princeton University Colleagues

Newswise — New Brunswick, N.J., December 5, 2012 – Eileen White, PhD, associate director for basic science at The Cancer Institute of New Jersey and professor of molecular biology and biochemistry at Rutgers, The State University of New Jersey, and colleagues from Princeton University have been awarded a new five-year, $2.4 million dollar research grant (1R01CA 163591-01) from the National Cancer Institute. The funding will support research to identify metabolic vulnerabilities of particularly aggressive cancers – those with mutations in the Ras cancer gene. The Cancer Institute of New Jersey is a Center of Excellence of the University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School (RWJMS).

Led by principal investigators Dr. White and Joshua D. Rabinowitz, MD, PhD, professor in the Department of Chemistry and the Lewis-Sigler Institute for Integrative Genomics at Princeton University, the project is an extension of a collaborative effort between their two laboratories. That work, which has examined cancer metabolism, was initially funded through a National Institutes of Health Challenge Grant.

For nearly half a century, it has been known that altered metabolism distinguishes cancer cells from normal cells. Only recently have scientists learned that activation of cancer genes and loss of tumor suppressor genes reprograms cell metabolism. With this altered metabolism, cancer cells acquire the ability to make building blocks for production of new cancer cells and produce the energy needed for cancer growth.

The current project aims to identify the ‘Achilles heel’ in the altered metabolism of cancer cells that are specifically fueled by mutations in the Ras gene. Cancer-causing mutations in Ras proteins activate Ras signaling that promotes cancer cell growth. Ras mutations cause the most deadly cancers such as pancreatic, lung and colon cancers. Targeting Ras proteins directly with intended therapeutics has been unsuccessful, thus prompting investigators to instead look at blocking the downstream consequences of Ras function. But in order to do that, they must first identify what Ras needs to convert normal cells into tumor cells, including how Ras alters metabolism in ways that are essential for tumor growth.

The White and Rabinowitz laboratories recently examined Ras activation and its impact on tumor cells. They found that Ras-driven cancers are dependent on a self-preservation process known as autophagy, in which cells cannibalize themselves in order to survive stressful conditions during tumor growth and in response to therapy. In this project, White and Rabinowitz aim to further explore metabolic dependence and autophagy addiction as metabolic vulnerabilities that can be exploited in the development of new cancer therapies.

White, who also is the program leader of the Cell Death and Survival Signaling Program at The Cancer Institute of New Jersey and an adjunct professor of surgery at RWJMS, notes, “We have already shown that Ras-driven cancers are vulnerable to interference in specific metabolic pathways. By further examining these metabolic liabilities, we will be able to identify additional weaknesses that can be targeted therapeutically to provide new treatments for Ras-driven cancers.”

The grant runs through June 2017.

About The Cancer Institute of New Jersey
The Cancer Institute of New Jersey (www.cinj.org) is the state’s first and only National Cancer Institute-designated Comprehensive Cancer Center dedicated to improving the detection, treatment and care of patients with cancer, and serving as an education resource for cancer prevention. Physician-scientists at The Cancer Institute of New Jersey engage in translational research, transforming their laboratory discoveries into clinical practice, quite literally bringing research to life. To make a tax-deductible gift to support The Cancer Institute of New Jersey, call 732-235-8614 or visit www.cinjfoundation.org. Follow us on Facebook at www.facebook.com/TheCINJ.

The Cancer Institute of New Jersey Network is comprised of hospitals throughout the state and provides the highest quality cancer care and rapid dissemination of important discoveries into the community. Flagship Hospital: Robert Wood Johnson University Hospital. System Partner: Meridian Health (Jersey Shore University Medical Center, Ocean Medical Center, Riverview Medical Center, Southern Ocean Medical Center, and Bayshore Community Hospital). Major Clinical Research Affiliate Hospitals: Carol G. Simon Cancer Center at Morristown Medical Center, Carol G. Simon Cancer Center at Overlook Medical Center, and Cooper University Hospital. Affiliate Hospitals: CentraState Healthcare System, JFK Medical Center, Robert Wood Johnson University Hospital Hamilton (CINJ Hamilton), Somerset Medical Center, The University Hospital/UMDNJ-New Jersey Medical School*, and University Medical Center of Princeton at Plainsboro. *Academic Affiliate

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