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Whole Mount Labeling of Cilia in the Main Olfactory System of Mice
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Whole Mount Labeling of Cilia in the Main Olfactory System of Mice

Published on: December 27, 2014

Tmem16b is specifically expressed in the cilia of olfactory sensory neurons

Sebastian Rasche1, Bastian Toetter, Jenny Adler

  • 1NeuroScience Research Center, Charité, Universitätsmedizin Berlin, 10117 Berlin, Germany.

Chemical Senses
|January 27, 2010
PubMed

Insights

Researchers identified Tmem16b as a key calcium-activated chloride channel (CaCC) in olfactory sensory neurons. This protein is specifically located in the cilia of these neurons, crucial for smell signal transduction.

Area of Science:

  • Molecular biology
  • Neuroscience
  • Physiology

Background:

  • Calcium-activated chloride channels (CaCCs) play vital roles in physiological processes, including sensory signal transduction.
  • The structure and function of CaCCs remain largely uncharacterized.
  • Olfactory sensory neurons (OSNs) rely on specific membrane proteins for signal transduction.

Purpose of the Study:

  • To identify novel membrane proteins in the olfactory epithelium (OE) that function as CaCCs.
  • To characterize the expression pattern and localization of Tmem16b, a candidate CaCC in OSNs.

Main Methods:

  • Proteome analysis of the olfactory epithelium (OE) membrane.
  • Identification of candidate CaCCs, including Tmem16b.
  • Analysis of Tmem16b expression specificity and localization within OSNs.

Main Results:

  • Tmem16b was identified as an abundant membrane protein in OSNs.
  • Tmem16b exhibits highly specific expression in the OE, unlike the broadly expressed Tmem16a.
  • Native Tmem16b was localized to the cilia of OSNs.

Conclusions:

  • Tmem16b is a CaCC specifically expressed in the olfactory epithelium.
  • The localization of Tmem16b in OSN cilia supports its role in olfactory signal transduction.
  • Further research into Tmem16b function is warranted given its specific expression and localization.

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