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Updated: Jun 17, 2026
08:11
Analysis of Gene Function and Visualization of Cilia-Generated Fluid Flow in Kupffer's Vesicle
Published on: March 31, 2013
Dynamics of cilia length in left-right development.
P Pintado1, P Sampaio1, B Tavares1
1NOVA Medical School Faculdade de Ciências Médicas, Chronic Diseases Research Centre, CEDOC , Universidade Nova de Lisboa , Campo Mártires da Pátria, 130, 1169-056 Lisboa , Portugal.
Royal Society Open Science
|April 14, 2017
Summary
Increased motile cilia length in zebrafish embryos has a milder effect on left-right development than shorter cilia. Longer cilia exhibit helical beating, reducing fluid flow and torque, which aligns with experimental findings.
Area of Science:
- Developmental Biology
- Biophysics
- Fluid Dynamics
Background:
- Motile cilia in the zebrafish left-right organizer (LRO) are crucial for embryonic development.
- Altering motile cilia length significantly impacts left-right patterning.
Purpose of the Study:
- To investigate the impact of increased motile cilia length on LRO fluid flow and left-right development.
- To compare the effects of longer cilia versus shorter cilia on embryonic development.
Main Methods:
- Genetic overexpression of Arl13b in zebrafish embryos to increase cilia length.
- Mathematical and fluid dynamics modeling of cilia beat patterns and fluid flow.
- Experimental validation of computational predictions.
Main Results:
- Increased cilia length led to decreased beat amplitude and similar flow strengths compared to wild-type (WT) embryos.
- Longer cilia exhibited helical beat patterns due to elastohydrodynamic shape transitions.
- Fluid dynamics modeling predicted a mild reduction (approx. 12%) in torque and flow generation for longer cilia.
Conclusions:
- The impact of increased motile cilia length on embryonic fluid flow is milder than that of reduced length.
- Helical beating patterns in longer cilia explain the reduced flow generation and mild developmental effects.
- Findings provide a mechanism for the observed mild impact on organ situs in zebrafish embryos.
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