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A method for isolating and patch-clamping single mammalian taste receptor cells.
A I Spielman1, I Mody, J G Brand
1Monell Chemical Senses Center, School of Dental Medicine, Philadelphia, PA 19104.
Brain Research
|December 4, 1989
Summary
Researchers isolated mouse taste receptor cells to study taste. They discovered these cells have electrical currents, and a bitter compound blocked specific currents, advancing taste transduction research.
Area of Science:
- Neuroscience
- Sensory Biology
- Electrophysiology
Background:
- Taste receptor cells are crucial for detecting flavors.
- Understanding mammalian taste mechanisms is essential for sensory science.
Purpose of the Study:
- To isolate and characterize mouse taste receptor cells for electrophysiological study.
- To investigate the electrical properties of individual taste receptor cells.
- To explore the role of specific compounds in taste signal modulation.
Main Methods:
- Enzymatic treatment and mechanical dissociation to isolate taste receptor cells from mouse tongue.
- Whole-cell voltage-clamp recordings to measure electrical currents.
- Application of denatonium benzoate to observe effects on ion currents.
Main Results:
- Isolated mouse taste receptor cells are morphologically similar to amphibian taste cells.
- Murine taste cells exhibit diverse voltage-dependent inward and outward currents.
- Denatonium benzoate, a bitter compound, effectively blocked delayed rectifier currents.
Conclusions:
- The isolated mouse taste receptor cell preparation enables detailed electrophysiological analysis of taste transduction.
- This model system facilitates the study of molecular mechanisms underlying bitter taste perception.
- Further research can elucidate the specific ion channels and signaling pathways involved in mammalian taste.