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Updated: May 10, 2026
08:11
Analysis of Gene Function and Visualization of Cilia-Generated Fluid Flow in Kupffer's Vesicle
Published on: March 31, 2013
Asymmetric rotational stroke in mouse node cilia during left-right determination.
Atsuko Takamatsu1, Takuji Ishikawa, Kyosuke Shinohara
1Department of Electrical Engineering and Bioscience, Waseda University, Tokyo 169-8555, Japan.
Summary
Mouse embryo cilia rotation generates leftward fluid flow crucial for left-right determination. This flow arises from tilted cilia, with asymmetric driving torque enhancing its effectiveness.
Area of Science:
- Developmental Biology
- Biophysics
- Fluid Dynamics
Background:
- Cilia-driven fluid flow is essential for embryonic left-right asymmetry determination.
- The precise mechanism generating unidirectional flow in the node cavity remains incompletely understood.
Purpose of the Study:
- To investigate the rotational dynamics of individual cilia in mouse embryos.
- To elucidate the contribution of cilia tilting and driving torque to leftward fluid flow generation.
Main Methods:
- Experimental observation of isolated single cilia in mouse embryos.
- Computational fluid dynamics (CFD) modeling.
- Analysis of cilia rotational axis tilting and fluid flow patterns.
Main Results:
- Leftward fluid flow in the node cavity is generated by cilia rotation.
- Cilia tilting to the posterior side is key to establishing this unidirectional flow.
- The leftward stroke's effectiveness is greater than predicted by models considering only cilia tilting and the no-slip condition.
Conclusions:
- Asymmetric driving torque is a critical factor in generating effective leftward fluid flow.
- The findings provide new insights into the biophysical mechanisms underlying embryonic patterning.
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