Boron Neutron Capture Therapy Could Cure Human Cancers With No Side Effects
"Since the 1930s, scientists have sought success with a cancer treatment known as boron neutron capture therapy (BNCT)," said Hawthorne, a recent winner of the National Medal of Science awarded by President Obama in the White House. "Our team at MU's International Institute of Nano and Molecular Medicine finally found the way to make BNCT work by taking advantage of a cancer cell's biology with nanochemistry."
Cancer cells grow faster than normal cells and in the process absorb more materials than normal cells. Hawthorne's team took advantage of that fact by getting cancer cells to take in and store a boron chemical designed by Hawthorne. When those boron-infused cancer cells were exposed to neutrons, a subatomic particle, the boron atom shattered and selectively tore apart the cancer cells, sparing neighboring healthy cells.
The physical properties of boron made Hawthorne's technique possible. A particular form of boron will split when it captures a neutron and release lithium, helium and energy. Like pool balls careening around a billiards table, the helium and lithium atoms penetrate the cancer cell and destroy it from the inside without harming the surrounding tissues.
"A wide variety of cancers can be attacked with our BNCT technique," Hawthorne said. "The technique worked excellently in mice. We are ready to move on to trials in larger animals, then people. However, before we can start treating humans, we will need to build suitable equipment and facilities. When it is built, MU will have the first radiation therapy of this kind in the world."
Hawthorne believes that his discovery was possible only at the University of Missouri because MU has three features that separate it from other universities in the nation, the reason Hawthorne came to MU from the University of California, Los Angeles in 2006.
"First, it is an example of a small number of universities in the United States with a large number of science and engineering disciplines on the same campus," said Hawthorne. "Second, the largest university research nuclear reactor is located at MU. Finally, it has strong, collegial biomedicine departments. This combination is unique."
The Proceedings of the National Academy of Science (PNAS) recently published the study, entitled “Boron neutron capture therapy demonstrated in mice bearing EMT 6 tumors following selective delivery of boron by rationally designed liposomes.” http://www.pnas.org/content/early/2013/03/27/1303437110
University of Missouri-Columbia
Source: EurekAlert!, the online, global news service operated by AAAS, the science society
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