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UCLA researchers find nanodiamonds could improve effectiveness of breast cancer treatment
Date:4/15/2013

Recently, doctors have begun to categorize breast cancers into four main groups according to the genetic makeup of the cancer cells. Which category a cancer falls into generally determines the best method of treatment.

But cancers in one of the four groups called "basal-like" or "triple-negative" breast cancer (TNBC) have been particularly tricky to treat because they usually don't respond to the "receptor-targeted" treatments that are often effective in treating other types of breast cancer. TNBC tends to be more aggressive than the other types and more likely to recur, and can also have a higher mortality rate.

Fortunately, better drug therapies may be on the horizon. UCLA researchers and collaborators led by Dean Ho, a professor at the UCLA School of Dentistry and co-director of the school's Jane and Jerry Weintraub Center for Reconstructive Biotechnology, have developed a potentially more effective treatment for TNBC that uses nanoscale, diamond-like particles called nanodiamonds.

Nanodiamonds are between 4 and 6 nanometers in diameter and are shaped like tiny soccer balls. Byproducts of conventional mining and refining operations, the particles can form clusters following drug binding and have the ability to precisely deliver cancer drugs to tumors, significantly improving the drugs' desired effect. In the UCLA study, the nanodiamond delivery system has been able to home in on tumor masses in mice with triple negative breast cancer.

Findings from the study are published online April 15 in the peer-reviewed journal Advanced Materials.

"This study demonstrates the versatility of the nanodiamond as a targeted drug-delivery agent to a tumor site," said Ho, who is also a member of the California NanoSystems Institute at UCLA, UCLA's Jonsson Comprehensive Cancer Center and the UCLA Department of Bioengineering. "The agent we've developed reduces the toxic side effects that are associated with treatmen
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Contact: Brianna Deane
bdeane@dentistry.ucla.edu
310-206-0835
University of California - Los Angeles
Source:Eurekalert

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