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Microscale Vortex-assisted Electroporator for Sequential Molecular Delivery
Published on: August 7, 2014
Flow-through comb electroporation device for delivery of macromolecules
Andrea Adamo1, Alessandro Arione, Armon Sharei
1Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue Cambridge, Massachusetts 02139, United States.
Analytical Chemistry
|December 25, 2012
Summary
We developed a microfluidic electroporation device for efficient cell molecule delivery. This technology shows high cell viability and rapid pore closure, enabling applications in cell analysis.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Microfluidics
Background:
- Electroporation is a key technique for introducing molecules into cells.
- Existing methods can be limited by efficiency, toxicity, or scalability.
- Microfluidic devices offer precise control and miniaturization for biological applications.
Purpose of the Study:
- To develop and characterize a novel microfluidic electroporation device.
- To assess the efficiency, toxicity, and pore dynamics of the device.
- To demonstrate the functional delivery of molecules for gene silencing.
Main Methods:
- Fabrication of a microfluidic device with a comb electrode layout using polydimethylsiloxane (PDMS) and glass.
- Characterization using HeLa cells and fluorescent dextran to assess delivery efficiency and cell viability.
- Validation of molecular delivery through silencing RNA (siRNA) studies in GFP-expressing cells.
Main Results:
- Achieved efficient molecule delivery (approximately 95%) with low cell toxicity (approximately 85% viability).
- Observed rapid pore closure after electroporation, indicating minimal cell membrane disruption.
- Demonstrated successful gene knockdown in GFP-expressing cells using delivered siRNA.
Conclusions:
- The developed microfluidic electroporation device offers an efficient and low-toxicity method for molecule delivery.
- The device's simplicity, scalability, and flow-through capability facilitate integration into automated cell analysis systems.
- This approach holds promise for advancing high-throughput cell-based assays and research.
