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Gene Expression Analysis of Endothelial Cells Exposed to Shear Stress Using Multiple Parallel-plate Flow Chambers
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Efficient Low Shear Flow-based Trapping of Biological Entities.
Ahmad Sohrabi Kashani1, Muthukumaran Packirisamy2
1Optical Bio Microsystem Lab, Mechanical, Industrial, and Aerospace Engineering Department, Concordia University, Montreal, Quebec, H3G 1M8, Canada.
Scientific Reports
|April 4, 2019
Summary
This study presents a new microdevice for efficient on-chip particle trapping using hydrodynamics. The system isolates micro-particles quickly with minimal stress, achieving over 90% trapping efficiency for cell studies.
Area of Science:
- Biotechnology
- Microfluidics
- Cellular Biology
Background:
- On-chip cell capture is crucial for controlled in-vitro studies.
- Existing methods face challenges in efficiency and particle stress.
Purpose of the Study:
- To develop a compact and efficient microdevice for hydrodynamic trapping of micro-sized particles.
- To optimize trapping parameters for high efficiency and minimal particle deformation.
Main Methods:
- Numerical simulations using finite element analysis to study fluid dynamics and forces.
- Fabrication of a polydimethylsiloxane (PDMS) microfluidic device.
- Experimental testing with polystyrene microspheres.
Main Results:
- The hydrodynamic trapping system demonstrated high trapping efficiency (>90%).
- Optimized design minimized hydrodynamic deformation and stress on trapped particles.
- Shortened trapping time compared to conventional methods.
Conclusions:
- The developed microdevice offers an efficient and gentle method for micro-particle isolation.
- This technology is suitable for single-cell studies, including characterization.
- The system advances capabilities for controlled microscale biological research.
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