Tags: Cancer | celery | compound | cancer | psoralen | breast

Celery Compound Fights Breast Cancer

By Nick Tate   |   Wednesday, 19 Feb 2014 05:44 PM

A natural compound found in celery, figs, and other foods has been shown to have potential as a potent weapon against aggressive breast cancer tumors.
The compound, called psoralen, is known to fight lymphoma and skin conditions by damaging DNA and causing tumor cell death when activated by UV light.  But Duke University researchers have found it combats breast tumors through a second method of action and could be developed as an effective therapy.
The new study, published in the Public Library of Science journal PLOS ONE, determined psoralen blocks the molecular action of what is known as an "HER2 receptor," which is involved in 25 percent of breast cancers, as well as ovarian, gastric, and other solid tumors.

When HER2 is overproduced, it fuels uncontrolled cell growth, leading to an aggressive form of cancer. But the Duke researchers found that psoralen shuts down this process.

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"This was very unexpected," said researcher Neil L. Spector, M.D., a professor of medicine at Duke. "The therapy has been known to kill cancer cells by causing DNA damage, but it is also having a direct anti-tumor effect on HER2 overexpressing breast cancer cells by blocking HER2 signaling."
Psoralen was also found to be effect against cancers that are resistant to chemotherapy.
Dr. Spector said researchers envision one day being able to inject the compound directly into tumors, then use low-dose X-rays to trigger its anti-tumor properties. Spector said the technology is being tested in animals, and may be approved for human clinical trials as early as this year.
"A good part of four years has been trying to figure out how to overcome the biophysics challenge of generating enough energy inside the body to activate the particles and the drug," Dr. Spector said. "We've come a long way."

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