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.
Lysogene, a French biopharmaceutical company working to develop gene therapy treatments for brain disorders, is partnering with FRAXA Investigator Dr. Herve Moine to tackle Fragile X.
FRAXA is working with hundreds of university labs and more than 30 pharmaceutical companies around the world. Dr. Michael Tranfaglia spends a lot of his time advising and collaborating with industry partners.
CRISPR/Cas9 was used by MIT researchers to remove the molecular tags that keep the mutant gene shut off in Fragile X syndrome neurons and resulted in some of them producing protein normally.
FRAXA funded a trial of AZD7325, a drug that boosts GABA(A), in adults with Fragile X. Led by Dr. Craig Erickson, it also tested innovative biomarkers for future trials.
Using CRISPR to reactivate FMRP, “We are trying to target the first event that goes wrong in Fragile X syndrome”, says FRAXA Investigator, Dr. Peter Todd.
Studies at Yale University and elsewhere show FMRP plays a significant role in regulation of potassium channels. Potassium channel opener drugs could rescue some symptoms of Fragile X.
Dr. Erickson’s trial targeted brain imbalance in Fragile X by boosting GABA signaling with AZD7325, aiming to restore excitatory–inhibitory balance and improve symptoms.
University of California researchers Khaleel Razak, PhD, and Jonathan W. Lovelace, PhD, explored drug combinations to limit hypersensitivity to sounds in Fragile X mice.
FRAXA funded Dr. Peter Todd to use CRISPR to reactivate FMR1. Published results confirmed restored gene expression, a big step toward disease-modifying therapy.
This study showed that selectively targeting mGluR5 receptors in specific neuronal compartments can correct distinct Fragile X synaptic defects, improving precision therapy.
With a $180,000 grant from FRAXA Research Foundation, Dr. Jeannie Lee and her team at Harvard are working to reactivate the gene that is silenced 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.
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.
Astrocytes, brain cells which support neurons, do not transmit signals. Fragile X treatment strategies have been proposed based on correction of “astrocyte phenotypes”.
With a $35,000 grant from FRAXA, Dr. Peter Vanderklish at Scripps Research Institute, and colleagues, explored the basis of anxiety in Fragile X syndrome.
This work established a high-content synaptic imaging platform for Fragile X cells to test many candidate drugs for their ability to repair synapse structure and function.