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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Electrophysiological, Biochemical and Immunohistochemical Characterization of Kv3.1 in Auditory Brainstem Nuclei in the Fragile X Knockout Mouse

Leonard Kaczmarek, PhD

With $80,000 in funding from FRAXA over several years, the Yale University team of Leonard Kaczmarek, PhD showed that loss of FMRP leads to an increased Kv3.1 potassium currents. This change impairs timing of action potentials in auditory neurons (and likely others throughout the brain).

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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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Defining Functional Domains of FMRP and Uncovering its Partners via Large Scale Mutagenesis in Drosophila

Yong Zhang, PhD, at Chinese Academy of Sciences, FRAXA research grant

With $80,000 in funding from FRAXA Research Foundation in 2005 and in 2006, Dr. Yong Zhang and his team at the Chinese Academy of Sciences developed a way to find genes that suppress the Fragile X gene. FRAXA grants $40,000 (2006) and $40,000 (2005) by Xinda Lin show that FMRP is a widely expressed RNA-binding protein involved in RNA transport and translation. Intensive studies in the last decade have demonstrated that FMRP contains four RNA binding domains, but their actual functions are mostly untested. Meanwhile, a dozen or so protein partners and hundreds of mRNA targets interacting with FMRP have been identified, but again their functions are poorly understood.

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