Correcting Fragile X Syndrome by Inhibiting the Synaptic RNA-Binding Protein CPEB1

Joel Richter, PhD

The Richter lab is the foremost research group in the world in the study of CPEB, a protein critical for regulation of protein synthesis. With $170,000 in grants from FRAXA Research Foundation over 2008-2011, Dr. Joel Richter of the University of MA Medical School explored whether inhibitions of the CPEB may be a viable approach for treatment of Fragile X.

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Small Molecule Modulators of Lithium for Treatment of Fragile X Syndrome

Stephen Haggarty, PhD, Harvard/MIT, Principal Investigator, FRAXA research grant

With a $219,500 grant from FRAXA Research Foundation, Dr. Stephen Haggarty from Havard/MIT developed a high-throughput drug screen to find compounds that inhibit GSK3, a critical enzyme in Fragile X. He looked for compounds that can accomplish this either alone or in combination with lithium, offering the possibility of enhancing the effectiveness of lithium as a treatment. His drug screen used patient-specific neural progenitor (NP) cells derived from human induced pluripotent stem cells (iPSCs) – which are created from cells in a skin biopsy from people with Fragile X syndrome (FXS) and other autism spectrum disorders.

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3 Researchers Honored at FRAXA Investigators Meeting

Over 150 scientists from around the globe gathered in Durham, New Hampshire, for FRAXA Research Foundation’s Investigators Meeting on September 21-24, 2008. They came from Australia, Canada, India, Turkey, the U.S., and eight European countries. Their common goal: “to share, collaborate and publish,” in the words of FRAXA’s Medical Director, Michael Tranfaglia, MD, to find effective treatments and a cure for Fragile X, the foremost inherited cause of mental retardation and autism. Most of the attendees were university-based professors, postdoctoral fellows, and graduate students who have FRAXA research grants. Also participating in the meeting were scientists from the National Institutes of Health (NIMH, NICHD, and NINDS), Neuropharm Group PLC, Hoffman LaRoche Inc., GlaxoSmithKline, Indevus, and Seaside Therapeutics, as well as 20 parents of Fragile X children.

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FRAXA Contributes $10,000 to NIH grant to Seaside Therapeutics

Randall Carpenter, MD, at Massachusetts Institute of Technology, FRAXA research grant

Randy Carpenter, MD Principal Investigator with Mark Bear, PhD, MIT Co-Investigator (2007) conducted a clinical development of mGluR5 antagonists to treat Fragile X Syndrome and Autism. Seaside Therapeutics received a major grant from the NIH, with additional funding from FRAXA and Cure Autism Now (CAN) to develop STX107, a selective mGluR5 antagonist, as a treatment for Fragile X. Unfortunately, Seaside has since discontinued development of STX107.

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Hypothalamic Pituitary Adrenal (HPA) Axis Dysregulation in Fragile X Syndrome

Carolyn-Beebe-Smith

The hypothalamic pituitary adrenal (HPA) axis is our central stress response system. FRAXA Research Foundation awarded Dr. Carolyn B. Smith $62,000 in funding in 2005 to explore the HPA axis in Fragile X mice. The results of their study indicate that, in FVB/NJ mice, the hormonal response to and recovery from acute stress is unaltered by the lack of Fragile X mental retardation protein. Results published.

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Role of Experience in Regulating Levels of the Fragile X Protein

Kenneth J. Mack, MD, PhD, at Mayo Clinic, FRAXA research grant

FRAXA awarded $29,000 in 2001 and $20,000 in 2000 to Kenneth J. Mack, MD, PhD — Mayo Clinic with Peter K. Todd, MD, PhD, Postdoctoral Fellow. While a professor at University of Wisconsin-Madison, Dr. Mack investigated whether and how FMRP levels are regulated in response to neuronal stimulation in vivo (in live animals). He looked at the effects of seizures and of experience in his experiments. Dr. Mack and colleagues published their findings.

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Improving Memory Reversal Testing and Treatment with AMPAkines in the Fragile X Knock-Out Mouse

W Ted Brown, MD, PhD

A two year $62,000 FRAXA grant was been awarded to W. Ted Brown, MD, PhD from 1997-1998. The Principal Investigator at the Institute For Basic Research in New York aims to develop an improved test to show learning deficits in the FMR1 knock-out mouse model of Fragile X, and test experimental drugs (Ampakines) that may be effective in treating these deficits.

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