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Ciliary chemosensitivity is enhanced by cilium geometry and motility
David Hickey1, Andrej Vilfan1,2, Ramin Golestanian1,3
1Max Planck Institute for Dynamics and Self-Organization (MPIDS), Göttingen, Germany.
Elife
|August 4, 2021
Summary
Cilia
Area of Science:
- Cell Biology
- Biophysics
Background:
- Cilia are essential cellular appendages with roles in sensing and movement.
- The precise location of chemical receptors on cilia is investigated for its impact on sensitivity.
Purpose of the Study:
- To determine if cilia's unique geometry enhances chemical sensing.
- To evaluate the benefits of motility in sensory cilia.
Main Methods:
- Utilized a computational advection-diffusion model.
- Calculated molecular capture rates on cilia in various fluid conditions.
Main Results:
- Non-motile cilia capture molecules more efficiently due to their shape.
- External shear flow and ciliary beating significantly increase molecular capture rates.
Conclusions:
- Cilia's protruding structure inherently boosts receptor sensitivity.
- Combining motility with sensory functions offers a distinct advantage for cilia.
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