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Compound found that targets wide range of viruses
Date:2/1/2010

GALVESTON, Texas The development of antibiotics gave physicians seemingly miraculous weapons against infectious disease. Effective cures for terrible afflictions like pneumonia, syphilis and tuberculosis were suddenly at hand. Moreover, many of the drugs that made them possible were versatile enough to knock out a wide range of deadly bacterial threats.

Unfortunately, antibiotics have a fundamental limitation: They're useless against viruses, which cause most infectious diseases. Antiviral drugs have proven far more difficult to create, and almost all are specifically directed at a few particular pathogens namely HIV, herpes viruses and influenza viruses. The two "broad-spectrum" antivirals in use, ribavirin and interferon-alpha, both cause debilitating side effects.

Now, researchers from the University of Texas Medical Branch at Galveston, UCLA, Harvard University, the U.S. Army Medical Research Institute of Infectious Diseases and Cornell University have teamed up to develop and test a broad-spectrum antiviral compound capable of stopping a wide range of highly dangerous viruses, including Ebola, HIV, hepatitis C virus, West Nile virus, Rift Valley fever virus and yellow fever virus, among others.

UCLA researchers led by Dr. Benhur Lee corresponding author on a paper on the work appearing this week on the Proceedings of the National Academy of Science Web site identified the compound (which they call LJ001), after screening a "library" of about 30,000 molecules to find a one that blocked the host cell entry of deadly Nipah virus. Subsequent experiments revealed that LJ001 blocked other viruses that, like Nipah, were surrounded by fatty capsules known as lipid envelopes. It had no effect on nonenveloped viruses.

"Once we started testing more and more, we realized that it was only targeting enveloped viruses," said Alexander Freiberg, director of UTMB's Robert E. Shope, M.D. Laboratory, the Biosafety Level 4 la
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Contact: Jim Kelly
jpkelly@utmb.edu
409-772-8791
University of Texas Medical Branch at Galveston
Source:Eurekalert

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