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

t and mediates significant reductions in tumor size."

The team combined several important cancer-fighting components on the nanodiamond surface, including Epirubicin, a highly toxic but widely used chemotherapy drug that is often administered in combination with other cancer drugs. The new compound was then bound to a cell-membrane material coated with antibodies that were targeted toward the epidermal growth factor receptor, which is highly concentrated on the surfaces of TNBC cells. The resulting agent is a drug-delivery system called a nanodiamond-lipid hybrid compound, or NDLP.

When tested on mice, the agent was shown to notably decrease tumor growth and eliminate the devastating side effects of cancer treatment.

Because of its toxicity, Epirubicin, when administered alone can cause serious side effects, such as heart failure and reduced white blood cell count, and it has been linked to an increased risk for leukemia. In the study, all of the mice that were given Epirubicin alone died well before the completion of the study. But all the mice given Epirubicin through the targeted NDLPs survived the treatment, and some of the tumors even regressed until they were no longer visible.

"Triple-negative breast cancer is often very aggressive and hard to treat, making aggressive chemotherapy a requirement," said Dr. Edward K. Chow, co-first author of the study and an assistant professor at the Cancer Science Institute of Singapore. "The targeting and therapeutic efficiency of the nanodiamond-lipid agents were quite remarkable. The simultaneous tumor regression and improved drug tolerance are promising indicators for the continued development of the nanodiamonds toward clinical translation."

The research team is now studying the efficacy and safety of the NDLPs in larger animals. Additional research objectives include determining whether nanodiamonds can enhance the tolerance of a wide spectrum of highly toxic drug c
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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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