Table 1.
Expression of putative sensory proteins in motile cilia
| Gene name | Receptor class | Location of motile cilia | Stimulus or Sensor | Effect | References |
|---|---|---|---|---|---|
| TRPV4 | Transient receptor potential (vanilloid) calcium channel | Airway, oviduct | Osmotic, viscosity, fluid flow | Increase Ca(i), regulate CBF | (34–36) |
| PR | Sex hormone receptor | Oviduct | Ligand binding | Increase Ca(i) Regulate CBF | (43–46, 71) |
| VANGL2 | Planar cell polarity | Ependyma | Fluid flow | Orient basal bodies | (50) |
| T2R | Bitter taste receptors, | Airway | Bitter substance | Increase Ca(i) regulate CBF | (39) |
| PKD1 | Polycystin trans-membrane protein | Airway, ependymal oviduct | Putative mechanosensory | Increase Ca(i) | (57, 59) |
| PKD2 | Transient receptor potential calcium channel | Airway, oviduct | Putative mechanosensory | Increase Ca(i) | (58) |
CBF, cilia beat frequency; Ca(i), intracellular calcium