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A portable chemotaxis platform for short and long term analysis
Chenjie Xu1, Yuk Kee C Poh, Isaac Roes
1Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital, Harvard Medical School, Harvard Stem Cell Institute, Harvard-MIT, Cambridge, Massachusetts, USA.
Plos One
|October 3, 2012
Summary
This study introduces a simple, standalone microfluidic platform powered by osmotic pumps for cell migration studies. The system generates stable chemical gradients for up to 7 days, simplifying complex chemotaxis assays.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Microfluidics
Background:
- Flow-based microfluidic systems are valuable for cell migration studies due to precise chemical gradient generation.
- Current microfluidic systems are limited by bulky peripherals and complex setups.
Purpose of the Study:
- To develop a simplified, standalone microfluidic platform for cell chemotaxis assays.
- To overcome the limitations of traditional microfluidic systems for cell migration research.
Main Methods:
- Utilized ALZET® osmotic pumps to power a microfluidic device.
- Developed a multiwell plate-footprint platform for continuous chemical gradient generation.
- Validated the platform using human bone marrow derived mesenchymal stem cells and PDGF-BB.
Main Results:
- The platform generated stable, well-defined chemical gradients for up to 7 days.
- Successfully validated short-term (24h) and long-term (72h) chemotaxis responses.
- Demonstrated concentration-dependent responses to PDGF-BB.
Conclusions:
- The developed microfluidic platform offers a simple and effective solution for cell migration and chemotaxis studies.
- This technology enhances accessibility and ease of use for researchers in cell biology and regenerative medicine.
- The platform supports long-term, stable gradient generation crucial for studying cellular behavior.
