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"Microcanals" for micropipette access to single cells in microfluidic environments
Chia-Hsien Hsu1, Chihchen Chen, Albert Folch
1Department of Bioengineering, University of Washington, Seattle, WA 98105, USA.
Lab on a Chip
|October 9, 2004
Summary
We developed open-air microfluidic channels, called microchannels, for cell manipulation. This technique allows for precise electrophysiological recording and dye injection within a microfluidic system.
Area of Science:
- Biotechnology
- Microfluidics
- Cell Biology
Background:
- Microfluidic devices are widely used for cell analysis.
- Traditional microfluidic systems often require complex fabrication and sealing.
- Open-air channels offer a simplified approach for cell manipulation.
Purpose of the Study:
- To demonstrate the fabrication and operation of novel open-air microfluidic channels (microchannels).
- To enable precise micropipette manipulation and probing of cells within a microfluidic environment.
- To showcase the utility of microchannels for patch-clamp electrophysiology and intracellular dye injection.
Main Methods:
- Fabrication of microchannels in polydimethylsiloxane (PDMS) on glass substrates.
- Utilized a PDMS membrane transferring technique for device construction.
- Performed cell seeding, patch-clamp recording, and intracellular dye injection within the microchannels.
Main Results:
- Successfully fabricated and operated functional microchannels.
- Demonstrated successful micropipette manipulation and probing of cells.
- Achieved high-quality patch-clamp electrophysiological recordings and intracellular dye injections in seeded cells.
Conclusions:
- Microchannels provide a versatile and accessible platform for cell-based assays.
- This open-air microfluidic approach simplifies cell manipulation and electrophysiological studies.
- The technique holds potential for various applications in cell biology and drug discovery.