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A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
Published on: October 15, 2013
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High-throughput injection molded microfluidic device for single-cell analysis of spatiotemporal dynamics
Youngtaek Kim1, Jiyoung Song1, Younggyun Lee1
1Department of Mechanical Engineering, Seoul National University, Seoul, Republic of Korea. ydshin@snu.ac.kr njeon@snu.ac.kr.
Lab on a Chip
|June 28, 2021
Summary
This study introduces a novel, injection-molded polystyrene microfluidic device for single-cell analysis. The new plastic device offers scalable fabrication and real-time control for studying cellular dynamics, overcoming limitations of traditional polydimethylsiloxane (PDMS) devices.
Area of Science:
- Biotechnology
- Cell Biology
- Microfluidics
Background:
- Microfluidic devices, particularly those made from polydimethylsiloxane (PDMS), are crucial for analyzing single-cell behaviors under controlled conditions.
- However, PDMS devices face limitations in scalability and material properties, hindering widespread adoption.
- There is a need for advanced microfluidic platforms that are cost-effective and enable precise spatiotemporal control for cell studies.
Purpose of the Study:
- To design and fabricate a novel, injection-molded microfluidic device using polystyrene (PS) for advanced single-cell analysis.
- To demonstrate the device's capability for real-time chemical profile control and spatiotemporal stimulation.
- To overcome the limitations of traditional PDMS microfluidic devices in terms of scalability and fabrication.
Main Methods:
- Fabrication of a polystyrene (PS) microfluidic device using injection molding with optimized channel dimensions.
- Utilizing computational simulation and experimental validation to analyze spatiotemporal dynamics within the device.
- Observing cellular responses, including extracellular signal-regulated kinase (ERK) activation, yes-associated protein (YAP) phase separation, and cell migration.
Main Results:
- Successfully demonstrated real-time chemical profile control and spatiotemporal stimulation capabilities.
- Observed ERK activation in PC12 cells and YAP phase separation in HEK293 cells under specific growth factor and sorbitol stimulations.
- Tracked NIH 3T3 cell migration under platelet-derived growth factor (PDGF) stimulation, showcasing spatial dynamics.
- Achieved comprehensive data acquisition more efficiently and in less time compared to conventional PDMS devices.
Conclusions:
- The injection-molded PS microfluidic device provides an accessible and efficient platform for single-cell level investigations.
- This technology overcomes the material and fabrication limitations associated with PDMS devices.
- The developed microfluidic device facilitates a new approach for studying complex cellular mechanisms at the single-cell level.
