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Digoxin may be a possible treatment for prostate cancer
Date:4/2/2011

ORLANDO, Fla. Scientists have identified digoxin as a possible therapy for prostate cancer, using a combination of laboratory science and epidemiology that is unprecedented in its cooperative nature.

"Epidemiologists and basic scientists often do not understand each other, as we often are only clear on our own strengths and the other's weaknesses," said Elizabeth Platz, Sc.D., M.P.H, professor of epidemiology and the Martin D. Abeloff, M.D., scholar in cancer prevention at Johns Hopkins University.

For the current paper, published in Cancer Discovery, the newest journal of the American Association for Cancer Research, which will debut at the AACR 102nd Annual Meeting 2011, Platz shares authorship with Srinivasan Yegnasubramanian, M.D., Ph.D., assistant professor of oncology at Johns Hopkins. Platz said the multidisciplinary team of scientists had come together to identify existing drugs that could be used to treat prostate cancer in a process called drug repositioning.

"If you use drugs that are already available then you have a long history of safety research that does not necessarily need to be redone, and we can move more quickly to testing whether the drug will actually work in a new setting," said Platz.

The idea of drug repositioning has been offered before, but each branch of scientific inquiry had enough flaws that it had not previously gained substantial traction. "When we combined the basic science and the epidemiology approaches, the flaws were not the same and were covered by their respective strengths," she said.

Platz, Yegnasubramanian and colleagues from Johns Hopkins and Harvard combined a high-throughput laboratory-based screen and a large, prospective cohort study.

In the first stage, the laboratory scientists conducted an in vitro prostate cancer cell toxicity screen of 3,187 compounds, and digoxin, a known heart failure drug emerged as a leading candidate due to its potency in
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Contact: Jeremy Moore
Jeremy.Moore@aacr.org
267-646-0557
American Association for Cancer Research
Source:Eurekalert

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