How OTOP1 helps you sense sour tastes
Role of the proton channel OTOP1 in taste transduction
Researchers are learning how a protein called OTOP1 helps mammals, including people, detect sour tastes and certain salt-related flavors.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Southern California NIH-funded |
| Lab location | 1 site (Los Angeles, UNITED STATES) |
| Project ID | NIH-11127947 on NIH RePORTER |
What this research studies
If I follow this work, scientists are studying taste bud cells to see how acids and ammonium chloride trigger electrical signals through the OTOP1 protein. They compare normal animals with mice that lack OTOP1, record electrical activity from taste cells and gustatory nerves, and test behavioral responses to sour and salty stimuli. Much of the work uses lab experiments and animal models to understand how OTOP1 changes cell pH and conducts protons. The team aims to explain why cell and nerve signals fall without OTOP1 while observable taste behavior may not always change.
Who could benefit from this research
Good fit: People with altered sour taste or other taste disorders might be most interested in these findings, although the current project is primarily laboratory work in animals and does not enroll patients.
Not a fit: If you are seeking an immediate treatment for taste loss, this basic research is unlikely to provide a direct therapy right now.
Why it matters
Potential benefit: A clearer picture of how OTOP1 works could eventually inform diagnosis or new approaches for people with taste disorders affecting sour or related taste sensations.
How similar studies have performed: Prior studies identified OTOP1 as a proton channel and showed that Otop1 knockout mice have reduced cellular and nerve responses to acids, but behavioral taste changes were unclear, so this project builds on those results.
Where this research is happening
Los Angeles, UNITED STATES
- University of Southern California — Los Angeles, United States (Active)
Researchers
- Principal investigator: Liman, Emily R. — University of Southern California
- Study coordinator: Liman, Emily R.
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.