Cell detachment and label-free cell sorting using modulated surface acoustic waves (SAWs) in droplet-based
Adrien Bussonnière1, Yannick Miron, Michaël Baudoin
1LIA LEMAC/LICS, Institut d'Eléctronique de Microélectronique et de Nanotechnologies (IEMN) UMR CNRS 8520, Université Lille 1 and EC Lille, Avenue Poincaré, BP 60069, 59652 Villeneuve d'Ascq, France. michael.baudoin@univ-lille1.fr.
Lab on a Chip
|July 18, 2014
Summary
This study introduces a novel surface acoustic wave (SAW) system for label-free cell sorting. The technology efficiently separates cell types based on adhesion differences using modulated SAW, achieving high purity and efficiency.
Area of Science:
- Biotechnology
- Cell Biology
- Acoustic Devices
Background:
- Cell sorting often requires complex labeling procedures.
- Existing methods can be time-consuming and may affect cell viability.
- Differentiating cells based on intrinsic properties like adhesion is challenging.
Purpose of the Study:
- To develop a label-free cell sorting system using surface acoustic waves (SAW).
- To detach biological cells from surfaces and sort them based on adhesion strength.
- To demonstrate efficient cell separation with minimal acoustic power and exposure time.
Main Methods:
- A droplet-based system utilizing modulated surface acoustic waves (SAW).
- Pulsatile flow generation within droplets to detach cells.
- Exploiting differences in cell adhesion strength (adhesion contrast) for sorting.
Main Results:
- Successful detachment and sorting of HEK 293 from A7r5 cells.
- High sorting purity (97%) and efficiency (95%) achieved.
- Rapid results obtained within minutes.
Conclusions:
- The SAW system offers a viable, label-free method for cell sorting.
- Adhesion contrast is an effective parameter for differentiating cell types.
- This technology presents a promising advancement in cell separation techniques.
