PUBLIC RELEASE DATE:
17-Nov-2014
Contact: Jim Fessenden james.fessenden@umassmed.edu 508-856-2000 University of Massachusetts Medical School @UMassMedNow
WORCESTER, MA -The National Institutes of Health has awarded a $9.5 million grant to investigators at the University of Massachusetts Medical School to establish a Center for Collaborative Research in Fragile X, one of three centers designated by the NIH. Scientists at the centers will seek to better understand the Fragile X syndrome and its associated disorders in an effort to work toward developing effective treatments for the inherited illness. In total, the NIH awarded $35 million to the centers.
Professor of Molecular Medicine Joel D. Richter, PhD, is principal investigator on the 5-year grant that includes his colleagues Gary J. Bassell, PhD, professor of cell biology at Emory University, and Eric Klann, PhD, professor of neural science at New York University. Together, the trio will explore the underlying molecular basis of the Fragile X disorder, focusing on messenger RNA (mRNA) translational control.
"Fragile X syndrome arises when a single gene is inactivated," said Dr. Richter. "That indirectly causes protein synthesis in the brain to be elevated, which likely causes the disease. What we want to investigate is how that protein synthesis comes about and how rebalancing it can rescue or reverse the illness in mice so the animals no longer have the Fragile X syndrome."
Fragile X is the most common form of inherited intellectual and developmental disability. It can affect 1 in about 4,000 males or 1 in about 6,000 females. People with Fragile X suffer from intellectual disability as well as behavioral and learning challenges ranging from mild to severe. As many as 30 to 50 percent of people with the Fragile X syndrome also have disease features that are found on the autism spectrum.
An expansion of a CGG trinucleotide repeat in the DNA of the FMR1 gene causes the Fragile X syndrome. The Fragile X protein made from this gene is most commonly found in the brain and helps create and maintain plasticity. It is also needed for normal neurological development. The longer this CGG repeats the more severe the disabilities.
While the Fragile X protein has several functions in the brain, its primary role is to slow down the molecular machinery that translates mRNAs into mature proteins. Without the Fragile X protein, these machines run out of control. The result is excessive amounts of perhaps 1,000 or more different proteins in the brain of a Fragile X patient.
It is thought that this inability to repress mRNA translation, which in turn leads to an increase in neural proteins in the brains of Fragile X patients, somehow hampers normal synaptic function. But because the Fragile X protein interacts with so many mRNAs, and some proteins become more elevated than others, parsing which mRNA or combination of mRNAs is responsible for Fragile X is a daunting task.
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U Mass Medical School receives $9.5 million for Fragile X research center
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