Problems in specific brain cells linked to Fragile X symptoms
Official title: Cortical Interneuron Dysfunction in Fragile X Syndrome
Funded at University of California Los Angeles · NIH-11284007 · Data updated 2026-11-12
This research looks at whether problems with certain brain cells called parvalbumin interneurons lead to sensory sensitivity in people with Fragile X Syndrome.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of California Los Angeles NIH-funded |
| Lab location | 1 site (Los Angeles, United States) |
| Project start | April 1, 2022 |
| Project end | February 28, 2027 |
| Funding year | 2026 |
| Award (this year) | $485,966 |
| NIH project number | 5R01HD108370-05 |
| Project ID | NIH-11284007 on NIH RePORTER |
Who could benefit from this research
✓Could help
People with Fragile X Syndrome—especially those who experience sensory hypersensitivity—are the population most likely to benefit from eventual therapies informed by this work.
✕Less likely to help
People without Fragile X Syndrome or whose symptoms are unrelated to sensory processing are unlikely to benefit directly from this project in the near term.
What this research studies
Researchers use a well-established Fragile X mouse model to trace how parvalbumin interneurons are born, migrate, mature, and connect into the sensory cortex. They combine birth-dating, anatomy, two-photon and functional recordings, and repetitive sensory (whisker) stimulation to link cellular changes to tactile defensiveness. The team also tests whether briefly boosting interneuron activity can correct circuit dysfunction and reduce maladaptive avoidance behaviors in mice. Findings aim to point toward cellular targets that could guide future human treatments.
Why it matters
Potential benefit: If successful, this work could point to new therapies that target interneurons to reduce sensory hypersensitivity in people with Fragile X Syndrome.
How similar studies have gone: Previous mouse studies have shown that restoring interneuron activity can improve sensory circuit function, but translating those approaches to safe and effective human treatments remains unproven.
Where this research is happening
-
University of California Los Angeles
Los Angeles, United States Active
Researchers
- Principal investigator: Portera-Cailliau, Carlos — University of California Los Angeles
- Study coordinator: Portera-Cailliau, Carlos
Related research
Other NIH-funded projects on the same topics.
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Understanding Fragile X Syndrome: How it progresses and affects daily life
A long-term study using existing Fragile X data to map how the condition changes over time in children and young adults, including how autism, race, and location influence outcomes.
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Sleep and mood links in Fragile X Syndrome
A short, patient-friendly study to understand how sleep problems relate to mood and depressive symptoms in people with Fragile X–linked autism.
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Connecting 3D genome misfolding to gene silencing in Fragile X syndrome
A study in people with Fragile X syndrome focuses on how 3D genome folding errors may turn off important genes, contributing to the condition’s features.
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Cortical circuit problems in Fragile X mice and people
Researchers are studying how brain circuits go awry in Fragile X syndrome by comparing mice and people to understand why certain brain rhythms and responses are altered.
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Brain biology in fragile X syndrome: how brain signals unfold and vary in patients
This grant supports research to understand brain signals and why symptoms vary in people with fragile X syndrome, aiming to translate findings into better care.
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Brain research on Fragile X Syndrome to improve therapies
A multi-year program studies brain function and differences in Fragile X Syndrome to help develop better treatments for people with FXS.
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.