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New Therapy to Prevent Triple Negative Breast Cancer from Spreading

by Ramya Rachamanti on April 18, 2019 at 7:59 PM
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New Therapy to Prevent Triple Negative Breast Cancer from Spreading

Combination drug therapy targeting an essential protein called p53 could decrease the spread of triple negative breast cancer to other locations of the body by 50 percent, according to the team of researchers from the University of Missouri.

Protein p53 suppresses and kills cancer in people. But, a defective, mutant form of p53 helps cancer cells grow and multiply.

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"Most people who succumb to breast cancer, and those in particular with triple-negative breast cancer, do so following metastasis, or spread of the cancer to other organs in the body," said Salman Hyder, the Zalk Endowed Professor in Tumor Angiogenesis and professor of biomedical sciences in the College of Veterinary Medicine and the Dalton Cardiovascular Research Center. "Triple negative breast cancer lacks ways to treat the cancer with chemotherapy. Therefore, people are administered toxic, non-specific drugs. We wanted to see if this combination therapy could provide a new, non-toxic targeted approach for treatment."

The study built on previous research by Hyder's lab and used mice that had human metastatic cancer, which had spread into the lungs. Researchers wanted to see if two previously discovered drugs -- APR-246 that restores the p53 protein's ability to kill cancer cells and 2aG4 that targets the blood vessels in order to kill cancer cells -- had an effect on metastatic triple negative breast cancer. Hyder says the results are promising.
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"The number of metastatic colonies was reduced when both compounds were given separately, and a little more with the combination of the two," Hyder said. "More importantly, the incidents of breast cancer, that is the number of mice that got cancer, was reduced by 50 percent when both were combined."

Both APR-246 and 2aG4 are currently in human clinical trials. Researchers hope these findings will help enhance personalized treatment for breast cancer by reducing existing cancer cells and preventing the spread of the cancer to other parts of the body.

This research highlights the power of translational precision medicine and the promise of the proposed initiative at MU. The initiative will bring together industry partners, multiple schools and colleges on campus, and the federal and state government to enable precision and personalized medicine.

Scientific advancements made at MU will be effectively translated into new drugs, devices and treatments that deliver customized patient care based on an individual's genes, environment and lifestyle, ultimately improving health and well-being of people.



Source: Eurekalert
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