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Vanderbilt-led team to develop 'microbrain' to improve drug testing
Date:7/24/2012

Take a millionth of a human brain and squeeze it into a special chamber the size of a mustard seed. Link it to a second chamber filled with cerebral spinal fluid and thread both of them with artificial blood vessels in order to create a microenvironment that makes the neurons and other brain cells behave as if they were in a living brain. Then surround the chambers with a battery of sensors that monitor how the cells respond when exposed to minute quantities of dietary toxins, disease organisms or new drugs under development.

Creating such a "microbrain bioreactor" is the challenge of a new $2.1 million research grant awarded to an interdisciplinary team of researchers from Vanderbilt University, Vanderbilt University Medical Center, the Cleveland Clinic and Meharry Medical College. The award is one of 17 that are being issued by the National Center for Advancing Translational Sciences at the National Institutes of Health as part of a $70 million "Tissue Chip for Drug Testing" program. The five-year program is a cooperative effort on the part of NIH, the Defense Advanced Research Projects Agency and the FDA.

The reason for microfabricating organ simulators containing small populations of human cells generally known as organ-on-a-chip technology is to bridge the formidable gaps that exist between the tools that researchers currently use to develop new drugs cell cultures and animal and human testing. These gaps not only add substantially to the difficulty and expense of developing new drugs but also contribute to the large number of experimental drugs that aren't effective or have unacceptable side effects when they are finally tested on people.

The brain is a particularly difficult target for drug development because it is surrounded by three barriers that protect it from molecular or cellular intruders. The most formidable of these is the blood-brain barrier (BBB). It surrounds the blood vessels that service the brain and allo
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Contact: David F. Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
Source:Eurekalert  

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