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Researchers develop simple method to create natural drug products
Date:9/4/2007

Until now, only the intricate machinery inside cells could take a mix of enzyme ingredients, blend them together and deliver a natural product with an elaborate chemical structure such as penicillin. Researchers at UC San Diegos Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences and the University of Arizona have for the first time demonstrated the ability to mimic this process outside of a cell.

A team led by Qian Cheng and Bradley Moore of Scripps was able to synthesize an antibiotic natural product created by a Hawaiian sea sediment bacterium. They did so by combining a cocktail of enzymes, the protein catalysts inside cells, in a relatively simple mixing process inside a laboratory flask. The research paper, along with a companion study describing a similar process achieved at Harvard Medical School with anti-tumor products, is published in the September issue of Nature Chemical Biology.

This study may signal the start of a new era in how drugs are synthesized, said Moore, a professor in the Center for Marine Biotechnology and Biomedicine at Scripps. Assembling all the enzymes together in a single reaction vessel is a different way to make a complex molecule.

While much more work is needed to employ this process on a mass scale, the achievement proves that such synthesis is possible relatively cheaply and easilywithout the use of man-made chemicalsotherwise known as green chemistry.

Most of the medicinal drugs on the market today are made synthetically. Researchers such as Moore and Scripps Oceanographys Bill Fenical have looked to the oceans as rich sources of new natural products to potentially combat diseases such as cancer.

The antibiotic synthesized in Moores laboratory, called enterocin, was assembled in approximately two hours. Such a compound would normally take months if not a year to prepare chemically, according to Moore.

Rather than a eureka moment
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Contact: Mario Aguilera, Cindy Clark
scrippsnews@ucsd.edu
858-534-3624
University of California - San Diego
Source:Eurekalert

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