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Gold nanoparticles could treat prostate cancer with fewer side effects than chemotherapy
Date:7/16/2012

an, Charles Caldwell as well as others in the Department of Radiology and at the MU Research Reactor to develop and design the nanoparticles to the correct shape and size to treat prostate cancer. If the nanoparticles produced are too small, they can escape and spread; if they are made large enough, the nanoparticles will stay inside the tumor and treat it much more effectively than current methods.

"Current therapy for this disease is not effective in those patients who have aggressive prostate cancer tumors," Cutler said. "Most of the time, prostate cancers are slow-growing; the disease remains localized and it is easily managed. Aggressive forms of the disease spread to other parts of the body, and it is the second-leading cause of cancer deaths in U.S. men. However, we believe the gold nanoparticles could shrink the tumors, both those that are slow-growing and aggressive, or eliminate them completely."

"This treatment is successful due to the inherent properties of radioactive gold nanoparticles," Kannan said. "First, the gold nanoparticles should be made to the correct size, and second, they have very favorable radiochemical properties, including a very short half-life."

With a half-life of only 2.7 days, the radioactivity from the gold nanoparticles is finished within three weeks.

"Because of their size and the compound found in tea, the nanoparticles remain at the tumor sites," Upendran said. "This helps the nanoparticles maintain a high level of effectiveness, resulting in significant tumor volume reduction within 28 days of treatment."

In the current study, the team tested the nanoparticles on mice. Prior to human trials, the scientists will study the treatment in dogs with prostate cancer. Prostate cancer in dogs is extremely close to the human form of the disease.

"When it comes to drug discovery, MU is fortunate because we have a combination of experts in cancer research, animal modeling, isotope pro
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Contact: Christian Basi
BasiC@missouri.edu
573-882-4430
University of Missouri-Columbia
Source:Eurekalert  

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