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Increasing label-free stem cell sorting capacity to reach transplantation-scale throughput
Melinda G Simon1, Ying Li2, Janahan Arulmoli
1Department of Biomedical Engineering, University of California at Irvine , Irvine, California 92697, USA.
Biomicrofluidics
|January 2, 2015
Summary
This study introduces a novel microfluidic device for high-throughput dielectrophoresis (DEP) cell sorting, significantly improving stem cell enrichment for transplantation research. The device enables expansion of sorted cells, generating clinically relevant numbers while maintaining differentiation capacity.
Area of Science:
- Biotechnology
- Cell Biology
- Microfluidics
Background:
- Dielectrophoresis (DEP) is a label-free, safe method for enriching stem and progenitor cells.
- Existing DEP devices have low throughput, limiting their use in large-scale cell studies like transplantation.
- A need exists for high-throughput cell sorting to enable broader research applications.
Purpose of the Study:
- To develop a microfluidic device for high-throughput enrichment of stem and progenitor cells using DEP.
- To demonstrate that DEP-sorted cells maintain their viability, enrichment, and differentiation capacity after expansion.
- To provide a cost-effective and user-friendly DEP system for common research laboratories.
Main Methods:
- Development of a novel microfluidic DEP device for cell sorting.
- Characterization of cell sorting throughput and efficiency.
- Assessment of post-sort cell viability, enrichment, and differentiation capacity after in-vitro expansion.
Main Results:
- The developed microfluidic DEP device achieves a throughput of 150,000 cells/h, an order of magnitude improvement over previous designs.
- DEP-sorted stem and progenitor cells retained their enrichment and differentiation capacity after 2 weeks of culture expansion.
- The device offers ease of use, simple fabrication, and low cost, making it accessible for routine laboratory applications.
Conclusions:
- This high-throughput DEP microfluidic device significantly advances stem and progenitor cell enrichment capabilities.
- The ability to expand sorted cells to transplantation-scale numbers while maintaining differentiation potential is a key breakthrough.
- This technology facilitates broader research and potential clinical applications requiring large numbers of enriched, functional stem cells.
