They started with a bare room and an idea. Now, after five years of painstaking, sophisticated tests, scientists at the University of Virginia Health System have discovered that a compound, derived from a rare South American plant, stops the growth of human breast cancer cells in laboratory cultures.
U. Va. Health System scientists Deborah Lannigan and Jeffrey Smith hope that, after further testing, their discovery could translate into a successful drug for the treatment of breast cancer. The disease is the second leading cancer killer of women in the U.S., according to the American Cancer Society, with an estimated 40,410 deaths.
The compound, called SL0101, comes from the plant Forsteronia refracta, a nondescript member of the dogbane family found in the Amazonian rain forest. The compound works like a key in a molecular lock. It inhibits the action of a cancer-linked protein called RSK, which the researchers discovered is important for controlling the growth of breast cancer cells. Interestingly, SL0101 does not alter the growth of normal breast cells. The discovery is detailed in the Feb. 1, 2005 issue of the journal Cancer Research and can be found online at: www.cancerres.aacrjournals.org.
Bob Beard | EurekAlert!
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The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
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