How tiny hair-like bundles in the inner ear control hearing signals
Probing how hair bundle mechanical properties shape the mechanotransducer receptor current
This research looks at how the hair-like bundles on inner ear sensory cells create electrical signals, aiming to help people with genetic, noise-related, or age-related hearing loss.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Stanford University NIH-funded |
| Lab location | 1 site (Stanford, United States) |
| Project ID | NIH-11168762 on NIH RePORTER |
What this research studies
The team studies the tiny stair-stepped bundles of stereocilia that convert sound motion into electrical currents in auditory hair cells. They use animal tissues and cell preparations with precise mechanical probes, acoustic stimulation, high-resolution imaging, and electrical recordings to measure how bundle shape and connections affect mechanically-gated ion channel currents. Genetic tools will be used to alter proteins that link stereocilia and observe resulting changes in mechanics and receptor currents. Results are intended to clarify how mutations, noise damage, or aging change hair-bundle function and to inform future strategies to protect or restore hearing.
Who could benefit from this research
Good fit: People with inherited forms of hearing loss (for example Usher syndrome), those with noise-induced or age-related hearing decline, or individuals willing to donate tissue or participate in related translational studies would be the most relevant.
Not a fit: Patients seeking immediate clinical treatments or those with unrelated medical conditions are unlikely to receive direct benefit from this basic laboratory research.
Why it matters
Potential benefit: If successful, this work could point to new ways to prevent or reverse hearing loss by targeting the mechanical or molecular causes of damaged hair bundles.
How similar studies have performed: Previous biophysics studies have improved understanding of hair-cell mechanics, but directly linking specific bundle mechanical properties to receptor currents remains an active and partly unresolved area.
Where this research is happening
Stanford, United States
- Stanford University — Stanford, United States (Active)
Researchers
- Principal investigator: Ricci, Anthony J — Stanford University
- Study coordinator: Ricci, Anthony J
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 below.