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3 brain diseases linked by toxic form of same neural protein
Date:2/2/2010

initiate regionalized cell death. This was accomplished through site-directed mutations and insertion of the mutated Elk-1 mRNA into dendrites and cell bodies. These studies showed that a specific position on the protein could be modified in the dendrite to cause neuronal cell death.

Next, they screened tissue from a post-mortem human brain bank, specifically samples representative of the three major neurodegenerative diseases, to look for higher levels of the toxic form of Elk-1 protein and compared their findings to levels in brain tissue from age-matched control samples.

By comparing the immunoreactivity for the pElk-1 protein in diseased tissue versus control tissue, they found that pElk-1 strongly associates with the pathological markers present in cases of Parkinson's disease, Alzheimer's disease, and Huntington's disease versus disease-free tissue.

The team hopes to next expand these preliminary findings to a larger sample size of tissues from neurodegenerative disease banks, and to screen blood samples from affected individuals to assess the biomarker capacity of this form of Elk-1 and to use animal models of these illnesses to assess the biological role of this modified form of Elk-1 in the disease processes. They also will be looking for other sites of toxic changes on the Elk-1 protein and will look in other disease tissue for modified Elk-1.


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Contact: Karen Kreeger
karen.kreeger@uphs.upenn.edu
215-349-5658
University of Pennsylvania School of Medicine
Source:Eurekalert  

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