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Device implanted in brain has therapeutic potential for Huntington's disease
Date:6/18/2012

Amsterdam, NL, June 18, 2012 Studies suggest that neurotrophic factors, which play a role in the development and survival of neurons, have significant therapeutic and restorative potential for neurologic diseases such as Huntington's disease. However, clinical applications are limited because these proteins cannot easily cross the blood brain barrier, have a short half-life, and cause serious side effects. Now, a group of scientists has successfully treated neurological symptoms in laboratory rats by implanting a device to deliver a genetically engineered neurotrophic factor directly to the brain. They report on their results in the latest issue of Restorative Neurology and Neuroscience.

Researchers used Encapsulated Cell (EC) biodelivery, a platform which can be applied using conventional minimally invasive neurosurgical procedures to target deep brain structures with therapeutic proteins. "Our study adds to the continually increasing body of preclinical and clinical data positioning EC biodelivery as a promising therapeutic delivery method for larger biomolecules. It combines the therapeutic advantages of gene therapy with the well-established safety of a retrievable implant," says lead investigator Jens Torne, NsGene A/S, Ballerup, Denmark.

Investigators made a catheter-like device consisting of a hollow fiber membrane encapsulating a polymeric "scaffold," which provides a surface area to which neurotrophic factor-producing cells can attach. When implanted in the brain, the membrane allows the neurotrophic factor to flow out of the device, as well as allowing nutrients in. Dr. Torne and his colleagues used the neurotrophic factor Meteorin, which plays a role in the development of striatal projection neurons, whose degeneration is a hallmark of Huntington's disease. The scientists engineered ARPE-19 cells to produce Meteorin and used those that produced high levels of Meteorin in their experiment.

The EC biodeliver
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Contact: Daphne Watrin
d.watrin@iospress.nl
31-206-883-355
IOS Press
Source:Eurekalert  

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Device implanted in brain has therapeutic potential for Huntington's disease
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