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Scripps Research scientists discover a brain cell malfunction in schizophrenia
Date:12/28/2011

LA JOLLA, CA December 27, 2011 Scientists at The Scripps Research Institute have discovered that DNA stays too tightly wound in certain brain cells of schizophrenic subjects.

The findings suggest that drugs already in development for other diseases might eventually offer hope as a treatment for schizophrenia and related conditions in the elderly.

The research, now available online in the new Nature journal, Translational Psychiatry, shows the deficit is especially pronounced in younger people, meaning treatment might be most effective early on at minimizing or even reversing symptoms of schizophrenia, a potentially devastating mental disorder associated with hallucinations, delusions, and emotional difficulties, among other problems.

"We're excited by the findings," said Scripps Research Associate Professor Elizabeth Thomas, a neuroscientist who led the study, "and there's a tie to other drug development work, which could mean a faster track to clinical trials to exploit what we've found."

A Promising New Field

Over the past few years, researchers have increasingly recognized that cellular-level changes not tied to genetic defects play important roles in causing disease. There is a range of such so-called epigenetic effects that change the way DNA functions without changing a person's DNA code.

One critical area of epigenetic research is tied to histones. These are the structural proteins that DNA has to wrap around. "There's so much DNA in each cell of your body that it could never fit in your cells unless it was tightly and efficiently packed," said Thomas. Histone "tails" regularly undergo chemical modifications to either relax the DNA or repack it. When histones are acetylated, portions of DNA are exposed so that the genes can be used. The histone-DNA complexes, known as chromatin, are constantly relaxing and condensing to expose different genes, so there is no single rig
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Contact: Mika Ono
mikaono@scripps.edu
858-784-2052
Scripps Research Institute
Source:Eurekalert  

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