Investigating TrpM5 as a Marker for Chemosensory Cells in Mice
Author Information
Author(s): Anne Hansen, Thomas E. Finger
Primary Institution: Rocky Mountain Taste and Smell Center, Dept. of Cell and Developmental Biology, School of Medicine, University of Colorado Denver
Hypothesis
Are TrpM5-positive cells in the olfactory epithelium microvillous and part of a chemosensory system?
Conclusion
TrpM5 is not a reliable marker for chemosensory cells in the olfactory epithelium of mice.
Supporting Evidence
- TrpM5-positive cells do not express neuronal markers.
- None of the microvillous cells described have an axon projecting to the olfactory bulb.
- TrpM5-positive cells may influence local elements of the olfactory system despite not being sensory.
Takeaway
The study looked at special cells in the noses of mice and found that a certain marker, TrpM5, doesn't really help identify chemosensory cells.
Methodology
The study used light and electron microscopy to examine the olfactory epithelium of mice and identify different types of microvillous cells.
Limitations
The study did not detect any axons in the microvillous cells, which raises questions about their sensory function.
Participant Demographics
Wild-type (C57BL/6) and TrpM5-GFP mice were used, aged 1 to 6 months.
Digital Object Identifier (DOI)
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