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Tufts University chemist earns prestigious award for promising research on drug development
Date:11/12/2010

MEDFORD/SOMERVILE, Mass. Joshua Kritzer, assistant professor in the School of Arts and Sciences Department of Chemistry at Tufts University, has been awarded one of 33 NIH Director's New Innovator Awards, one of the most prestigious grants awarded by the National Institutes of Health.

The NIH Director's New Innovator Award program is designed specifically to support unusually creative new investigators with highly innovative research ideas at an early stage of their career. Awards recognize the potential of projects to have a significant impact on important biomedical or behavioral research problems.

The $1.5 million grant will fund Kritzer's research into a rapid drug-screening process that may help scientists identify new drugs to treat diseases. Scientists today face a fundamental problem in the drug discovery process. Up to 90 percent of the human proteins, including many that cause cancer and other diseases, are difficult to target through traditional methods of screening.

Adapting his previous work at the Whitehead Institute for Biomedical Research, Kritzer is able to use baker's yeast to produce large collections of molecules called cyclic peptides. To do this, Kritzer inserted short snippets of DNA into the yeast cells that direct them to make the cyclic peptides. The cells then synthesize tens of millions of different cyclic peptides that can be directly tested for anti-cancer or other activities.

Cyclic peptides are important because they can bind with disease-causing proteins that scientists previously have been unable to target because they do not possess "active sites" or pockets that can easily bind with inhibitory drugs. As a result, drug developers have largely ignored these proteins, says Kritzer. "They are considered undruggable targets, but they include some of the most direct causes of cancer, inflammation and other diseases," he says.

Kritzer will focus his technology on a specific group of proteins called tran
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Contact: Alex Reid
alexander.reid@tufts.edu
617-627-4173
Tufts University
Source:Eurekalert

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