Cellular-Specific Therapeutic Targeting of Inhibitory Circuits in Fragile X Syndrome
The team studied how inhibitory brain circuits malfunction in Fragile X and tested ways to restore balance by targeting mGluR and endocannabinoid signaling.
MicroRNAs as Biomarkers in Fragile X Syndrome
The team at Johns Hopkins University studied groups of small RNAs, known as microRNAs, which are greatly decreased in brain tissue of Fragile X mice vs. normal controls.
MicroRNA Mediated Astroglial GLT1 Dysregulation in Fragile X
The team studied how glial cells, especially astrocytes, affect Fragile X. They tested microRNAs to restore GLT1 and reduce excess glutamate linked to brain hyperexcitability.
Potassium Channel Modulators to Treat Fragile X
FRAXA-backed Yale discoveries tied Fragile X to Kv3.1/Slack channel defects—leading to a partnership with Autifony to develop targeted treatments.
Targeting Adiponectin to Treat Fragile X Syndrome
Boosting adiponectin, a hormone that regulates metabolism, may improve cognition and behavior in Fragile X. Early results suggest it can restore brain plasticity.
Targeting Mitochondria in Human Fragile X Syndrome Neurons
Fragile X brain cells have fewer, smaller mitochondria. This team tested mitochondria-boosting drugs that improved symptoms in mice to see if they can help humans.
Correcting Sensory Processing in Fragile X Mice by Modulating Kv3.1
FRAXA funded UCLA research on a Kv3.1-targeting drug to ease sensory issues in Fragile X. This work built on Yale-led work now also being pursued by Autifony Therapeutics.
Which is the right FMRP for Therapeutic Development of Fragile X Syndrome?
Many forms of FMRP exist in the brain. This project aims to pinpoint which versions of the protein are most critical to restore for effective Fragile X treatments.
Screening 2,320 FDA-Approved Drugs for Potential Treatment of Fragile X
FRAXA funded a screen of 2,320 FDA-approved compounds in the Fragile X fly model to identify hits that improve memory and social behavior for advanced testing.
Novel Modulators of Potassium Channels to Treat Fragile X
FRAXA-funded Yale research showed disrupted Kv3.1 and Slack potassium channels impair neuronal timing in Fragile X. Published findings support Kv3.1 as a treatment target.
Autophagy is a Novel Therapeutic Target of Impaired Cognition in Fragile X Syndrome
FRAXA’s $90K grant enabled Dr. Zukin to link impaired autophagy to Fragile X. Boosting autophagy restored synaptic proteins and reversed cognitive deficits in mice.
Coffee, Tea, and Chocolate: Adenosine Receptors in Fragile X
Could “caffeine-like” drugs help Fragile X? FRAXA funded research to test adenosine blockers, which may boost thinking and improve symptoms in Fragile X mice.
NKCC1 Inhibitor Bumetanide Corrects Synaptic and Circuit Hyperexcitability in Fragile X Mouse Model
Dr. Anis Contractor and Dr. Qionger He investigated the potential of the available drug bumetanide to correct altered GABA signalling in a mouse model of Fragile X syndrome.
Research Points to Drugs which Inhibit PDE to Treat Fragile X
FRAXA-funded work identified PDE enzymes as key targets in Fragile X, showing that PDE inhibitors can fix signaling and boost synaptic function. PDE4D trials are underway.
Metformin and Aberrant Insulin Signaling in a Fragile X Mouse Model
FRAXA-funded research is revealing how insulin signaling is altered in Fragile X and whether lowering it, including with metformin, could ease symptoms.
Understanding and Reversing Hypersensitivity to Sounds in Fragile X Syndrome
This FRAXA grant studied why people with Fragile X are overly sensitive to sound and tested drug strategies to calm the brain’s overactive auditory circuits.
Three-Dimensional Model for Identifying Fragile X Treatments
With a $90K FRAXA grant, Emory scientists are creating Fragile X brain organoids—3D human cell models—to reveal disease mechanisms and guide new treatments.
Pharmacological Tolerance in the Treatment of Fragile X Syndrome
FRAXA funded MIT work to probe tolerance to key Fragile X drugs, including mGluR5 inhibitors and arbaclofen, and to identify ways to sustain long-term treatment benefits.
Effects of Metformin in Fmr1 Knockout Mouse Model of Fragile X Syndrome
Metformin, a safe diabetes drug, activates AMPK to rebalance protein synthesis. FRAXA-funded work investigated its potential to treat Fragile X.
Combinatorial Drug Treatment in a Model of Fragile X Syndrome using Novel Biomarkers
University of California researchers Khaleel Razak, PhD, and Jonathan W. Lovelace, PhD, explored drug combinations to limit hypersensitivity to sounds in Fragile X mice.
Defining Subcellular Specificity of Metabotropic Glutamate Receptor (mGluR5) Antagonists
This study showed that selectively targeting mGluR5 receptors in specific neuronal compartments can correct distinct Fragile X synaptic defects, improving precision therapy.
Mechanisms of Tolerance to Chronic mGluR5 Inhibition
FRAXA supported research showing mGluR5 antagonist tolerance develops quickly in Fragile X models, guiding new strategies to prevent or overcome it.
Prefrontal Cortex Network (PFC) Dynamics in Fragile X Syndrome
The team has shown that Fragile X mice have major prefrontal cortex deficits in Fragile X mice. Finding ways to overcome this could reveal new intervention strategies.
Prefrontal Cortex Network (PFC) Dynamics in Fragile X Syndrome
With a $90,000 grant from FRAXA Research Foundation from 2016-2017, Dr. Daniel Johnston and Dr. Jenni Siegel at the University of Texas at Austin are analyzing pre-frontal cortex (PFC) dysfunction in the Fragile X model. They have preliminary evidence that Fragile X mice are severely impaired in a prefrontal cortex (PFC)-dependent task.