MedicineWorld.Org
Your gateway to the world of medicine
Home
News
Cancer News
About Us
Cancer
Health Professionals
Patients and public
Contact Us
Disclaimer

Medicineworld.org: Vitamin E Offshoot A Potent Cancer Killer

Back to cancer blog Blogs list Cancer blog  


Subscribe To Cancer Blog RSS Feed  RSS content feed What is RSS feed?

Vitamin E Offshoot A Potent Cancer Killer

Vitamin E Offshoot A Potent Cancer Killer
Scientists here have learned how a derivative of vitamin E causes the death of cancer cells. The scientists then used that knowledge to make the agent an even more potent cancer killer.

The compound, called vitamin E succinate, or alpha tocopheryl succinate, is taken by some people as a nutritional supplement, mainly for its antioxidant properties. In addition, it has a weak ability to kill cancer cells, and it has been tested as a cancer chemopreventive agent.

The substance kills cancer cells by causing them to undergo a natural process known as programmed cell death, or apoptosis. Until now, no one knew how the agent caused this to happen.

These findings answer that question and also indicate that the molecule's antitumor activity is separate from its antioxidant effect.

The study, led by scientists with The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC-James), is reported in the April 28 issue of the Journal of Biological Chemistry.

"Our findings could lead to a potent chemopreventive agent that has both strong anticancer and antioxidant properties," says principal investigator Ching-Shih Chen, professor of pharmacy and of internal medicine and a researcher with the OSUCCC-James.

"Such an agent might help reduce the risk of prostate, colon and other cancers."

Chen and his collaborators found that vitamin E succinate works by blocking a protein called Bcl-xL. The protein, which is made by healthy cells, is often present at abnormally high levels in cancer cells and protects them from dying when they should.

Using computer modeling, the scientists found that the vitamin E derivative works because it lodges in a groove in the structure of the Bcl-xL protein, disabling it.

However, the vitamin E molecule has a long, coiled, protruding tail that keeps the molecule from fitting tightly, and more effectively, into the groove.

"Once we identified how the agent and the protein interact, we asked how we could improve that interaction," Chen says.

The researchers found that a relatively simple process of altering the molecule's structure - basically cutting the tail short - allowed a tighter fit and improved the agent's ability to kill cancer cells by five- to ten-fold in laboratory tests.

"Overall, out findings are proof of the principle that this drug can kill cancer cells very effectively but does very little damage to healthy cells," Chen says.

Chen is also the Lucius A. Wing chair of cancer research and treatment at the OSUCCC-James and the Kimberly professor of pharmacy.



Posted by: Janet    Source




Did you know?
Scientists here have learned how a derivative of vitamin E causes the death of cancer cells. The scientists then used that knowledge to make the agent an even more potent cancer killer. The compound, called vitamin E succinate, or alpha tocopheryl succinate, is taken by some people as a nutritional supplement, mainly for its antioxidant properties. In addition, it has a weak ability to kill cancer cells, and it has been tested as a cancer chemopreventive agent.

Medicineworld.org: Vitamin E Offshoot A Potent Cancer Killer

Main Page| Cancer blog| Cancer blogs list| Lung cancer blog| Colon cancer blog| Prostate cancer blog| Breast cancer blog| Diabetes watch blog| Heart watch blog| Allergy blog| Bladder cancer blog| Cervical cancer blog| Colon cancer news blog| Diabetes news blog| Esophageal cancer blog| Gastric cancer blog| Health news blog| Heart news blog| Infectious disease blog| Kidney watch blog| Lung disease blog| Lung cancer news blog| Mesothelioma blog| Neurology blog| Breast cancer news blog| OBGYN blog| Ophthalmology blog| Ovarian cancer blog| Cancer news blog| Pancreas cancer blog| Pediatrics blog| Prostate cancer news blog| Psychology blog| Research blog| Rheumatology blog| Society news blog| Uterine cancer blog| Weight watch blog|

Copyright statement
The contents of this web page are protected. Legal action may follow for reproduction of materials without permission.