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Zebrafish may help speed drug discovery
Date:1/17/2012

e in the transparent zebrafish.

Now, he can leave the fish in the well plates, which look like plastic ice trays with cubes about the size of pencil tops and come in multiples of 96. The individual wells enable him to quickly reassess the impact of the thousands of compounds identified by high-throughput screening in a living specimen. Simply put: Does the glow come back? The next step becomes logical and doable: study the 20 or so compounds that continued to show promise in a mouse model. These steps to the fish then mouse, called biological validation, have been a real bottleneck in science post high-throughput screening, Mumm said. "This is going to give you much more thorough information about how compounds affect the overall physiology of a living being," Mumm said.

He noted that reporter-based assays number in the thousands so what they can help find is essentially limited only by the imagination.

He's used one to monitor a major signaling pathway that consistently shows up in cancer. "We hooked the pathway up to a reporter that told us whether it was on or off, then tested whether we could modulate it over time and, sure enough, it was very easy to do," Mumm said. "Name the cancer and basically you have WNT activated so there is a huge effort in cancer therapeutics to try and essentially shut it down."
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Contact: Toni Baker
tbaker@georgiahealth.edu
706-721-4421
Georgia Health Sciences University
Source:Eurekalert  

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