December 18, 2009

VICC investigators land Stand Up to Cancer grant

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William Pao, M.D., Ph.D., left, with colleagues, from left, Peilin Jia, Ph.D., Juliann Chmielecki and Shongming Zhao, Ph.D. (photo by Mary Donaldson)

VICC investigators land Stand Up to Cancer grant

William Pao, M.D., Ph.D., associate professor of Medicine, has been awarded a grant from Stand Up to Cancer (SU2C) to identify molecules that could speed the search for new cancer drugs and targets.

He is one of 13 young cancer investigators to earn a grant from SU2C. Over a three-year period, each investigator will receive up to $750,000 from SU2C's Innovative Research Grants program, which supports the next generation of cancer researchers.

SU2C raises funds to hasten the pace of translational research that can bring new therapies to patients. The effort kicked off in September 2008 with a live television broadcast featuring Hollywood stars, network news executives and celebrity athletes.

Scientists from the American Association for Cancer Research (AACR) helped select the recipients.

“I am very grateful to be selected for this award,” said Pao, Ingram Associate Professor of Cancer Research and assistant director of Personalized Cancer Medicine. “This grant will allow us to pursue some risky, but promising research.”

This is Vanderbilt-Ingram Cancer Center's second SU2C grant. Earlier this year, Carlos Arteaga, M.D., director of the Vanderbilt-Ingram Breast Cancer Program, and Patty Lee, Patient Research Advocate, were chosen to participate in one of the SU2C Cancer Dream Teams studying breast cancer.

Pao and his colleagues are studying kinases, molecules inside cells involved in telling a cell whether to proliferate. In cancers, these kinases can become aberrant so that they are stuck in the “on” position, telling cells to divide all the time.

“Mutant kinases are very druggable targets, so if you identify the right drug to turn off a specific mutant kinase in cancer, you can kill the tumor,” said Pao.

The best example of this is in chronic myelogenous leukemia (CML) for which there is a kinase called ABL, which is abnormally fused. The discovery of that kinase fusion led to the drug Gleevec, which revolutionized treatment for CML.

Pao and graduate student Juliann Chmielecki have found a way to speed up the search for kinase fusions.

“We devised an unbiased screening strategy to detect potential fusions involving any of the 90 tyrosine kinases in the human genome, using minimal amounts of starting tumor material,” said Pao.

“This assay involves new technologies such as 'exon capture' and 'next-generation' sequencing. We showed that it works and we are now ready to start screening tumors for novel fusions.”

Pao said this focus on genetic profiling of tumors will lead to improvements in personalized medicine.

“We know from history that kinase fusions are likely to be important in cancer,” said Pao. “Many drug companies are developing kinase inhibitors, so there may already be a drug in development that would target a fusion that we find. We could then prioritize patients who should receive that drug, based on the genetic profile of their tumor.”

Pao will study tumors that are especially resistant to treatment, including certain lung cancer tumors, and will collaborate with Arteaga on the study of triple-negative breast tumors.

Zhongming Zhao, Ph.D., associate professor in Biomedical Informatics, and Peilin Jia, Ph.D., research fellow in the same department, also are involved in the research.