How genes shape connections of the ear's hearing nerves
Genetic dissection of auditory circuit assembly
This work looks at how specific genes guide hearing nerve cells to make the right connections so people can hear and understand sounds better after noise exposure or with aging.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Harvard Medical School NIH-funded |
| Lab location | 1 site (Boston, United States) |
| Project ID | NIH-11310829 on NIH RePORTER |
What this research studies
From my point of view, the team is mapping how different types of nerve cells in the inner ear wire up to the sensory hair cells and which genes control those differences. They focus on several key transcription factor genes (like Gata3, c-Maf, and Mafb) and use genetic tools in lab models to see how those genes change synapse size, position, and vulnerability. The researchers compare nerve cell subtypes that are more or less vulnerable to noise damage and age-related loss to find molecular programs behind that vulnerability. Their goal is to connect gene activity to the kinds of hearing trouble some people have despite normal hearing tests.
Who could benefit from this research
Good fit: People who have difficulty understanding speech in noisy settings or who suspect noise-induced or age-related nerve damage in the inner ear are the types of patients most likely to benefit from future therapies informed by this research.
Not a fit: Patients whose hearing loss is caused primarily by middle-ear problems or mechanical damage unrelated to nerve–hair cell synapses may not see direct benefits from these genetic and synapse-focused studies in the near term.
Why it matters
Potential benefit: If successful, this work could point to molecular targets to prevent or repair nerve–hair cell synapse damage and help preserve speech understanding after noise exposure or with aging.
How similar studies have performed: Previous animal studies have identified spiral ganglion neuron subtypes and some genes linked to synapse differences, but this project applies newer genetic tools to directly link specific transcription factors to synapse structure and vulnerability.
Where this research is happening
Boston, United States
- Harvard Medical School — Boston, United States (Active)
Researchers
- Principal investigator: Goodrich, Lisa — Harvard Medical School
- Study coordinator: Goodrich, Lisa
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.