Channelopathies: Altered Ion Channels in Fragile X Syndrome
Ion channel defects (“channelopathies”) in Fragile X disrupt neuron firing and network balance. This study maps these channel changes to guide targeted treatments.
Phase 1 Clinical Trial of Mega Green Tea Extract in Fragile X Syndrome
An early trial of green tea extract EGCG improved cognition in Fragile X. It targets ERβ and reduces overactive PI3K/mTOR/ERK signaling linked to FXS symptoms.
Functional Interplay Between FMRP and CDK5 Signaling
FRAXA-funded work showed CDK5 signaling is disrupted in Fragile X. CDK5 drugs are in development for Alzheimer’s so this pathway offers a promising new FX treatment angle.
Computational Analysis of Neural Circuit Disruption in Fragile X Model Mice
FRAXA-funded researchers used advanced computer models to uncover how FXS brain circuits change and predict which treatments may correct them. Results published.
Synaptic Characterization of Human Fragile X Neurons
Stanford scientists used human stem-cell–derived neurons to show that retinoic acid signaling is blocked by Fragile X, revealing a new pathway to target for treatment.
Bcl-xL Inhibition as a Therapeutic Strategy for Fragile X Syndrome
Fragile X neurons show leaky mitochondria and excess Bcl-xL–driven synapses. Targeting this pathway may restore energy balance and healthier brain development.
Seizures in Fragile X Syndrome and Therapeutic Potential of NMDA Receptor Antagonists
Dr. Wong studies how NMDA and mGluR receptors interact to trigger seizures in Fragile X, revealing NR2B-specific blockers as a promising targeted treatment.
Fragile X Syndrome Treatment Target: MMP-9
Dr. Ethell was awarded FRAXA Research Foundation funding from 2008-2011 and 2012-present. This latest work shows that human Fragile X tissues have elevated levels of the extracellular enzyme MMP-9, as well as an increase in the active fraction of that protein (like most enzymes, MMP-9 can exist in an inactive form which can be switched on rapidly; this kind of regulation is important in most biological pathways.)
Scientists Uncover Trigger for Fragile X Syndrome
A Weill Cornell team discovered that Fragile X stems from a gene being shut off—and a compound that blocks this process may prevent the condition.
Small Molecules To Target r(CGG) Expansions to Treat Fragile X Syndrome
FRAXA-funded scientists created small molecules that target the CGG repeat “off-switch” in Fragile X, aiming to restore the missing FMRP protein at its source.
Fragile X Syndrome Protein Linked to Breast Cancer Progression
Dr. Claudia Bagni’s team discovered that FMRP can act as a master switch in aggressive breast cancer, controlling proteins that drive invasion and metastasis.
Social Behavior as an Outcome Measure for Fragile X Clinical Trials
FRAXA funding helped identify reliable social behavior tests in Fragile X mice and showed an mGluR5 treatment could improve sociability, guiding future trials.
Translation-Independent Functions of FMRP in Excitability, Synaptic Transmission and Plasticity
Study pinpointed presynaptic calcium dysfunction as the driver of STP defects in Fragile X, and BK channel activation restored normal synaptic signaling.
Glycogen Synthase Kinase-3 (GSK3), Lithium and Fragile X
Dr. Jope found that lithium (at usual therapeutic doses) and investigational GSK3 inhibitors can reverse a number of cognitive deficits in FMR1 knockout mice.
Development of a Novel GABA-A Agonist in Fragile X Syndrome
FRAXA funded analysis of a selective GABA-A drug for Fragile X, leading to a clinical trial at Cincinnati Children’s to test this potential treatment.
The mTOR Pathway in Fragile X Syndrome
FRAXA-funded research showed that blocking S6K1 in Fragile X mice improves social, behavioral, and physical symptoms.
Matrix Metalloproteinase Therapeutic Treatments for Fragile X Syndrome
Dr. Broadie showed that MMP enzymes disrupt synapse development in Fragile X. MMP inhibitors (e.g. minocycline) improved connectivity and behavior in fruit flies.
Lovastatin Discovery in Fragile X Mice Leads FRAXA to Fund Clinical Trials
FRAXA honored Dr. Emily Osterweil for discovering that lovastatin can correct key Fragile X abnormalities. Her findings were published in Neuron.
Effects of minocycline on vocal production and auditory processing in a mouse model of Fragile X
With FRAXA funding, Dr. Khaleel Razak and Dr. Iryna Ethell explored robust biomarkers relevant to the FXS and the efficacy of minocycline treatment.
Endocannabinoid Mediated Synaptic Plasticity in Fragile X Mice
FRAXA-funded studies found faulty endocannabinoid signaling in Fragile X brain circuits for reward and emotion, and boosting 2-AG restored normal function.
Treatment of Fragile X Syndrome via Dopamine Enhancers and Glutamate Inhibitors
In Fragile X mice, low dopamine signaling and excessive glutamate activity were targeted with dual therapy: dopamine enhancers plus glutamate inhibitors.
Developing IPS cells to Screen Drugs which can Reactivate the FMR1 Gene
This project developed human stem cell and mouse models to test FMR1 gene reactivation in the brain, advancing future gene therapy strategies for Fragile X.
Targeting mGluR-LTD to Treat Fragile X Syndrome
With FRAXA support, Dr. Kimberly Huber uncovered how mGluR signaling contributes to Fragile X, laying the foundation for major clinical advances.
Preclinical Evaluation of Serotonin Receptor Agonists as Novel Pharmacological Tools in Fragile X Syndrome
With FRAXA funding the team found that activating 5-HT7 receptors reversed excess mGluR-LTD in Fragile X mice, pointing to a new route to fix synapses.