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Discrimination Between Normal Skin Fibroblasts and Malignant Melanocytes Using Dielectrophoretic and Flow-Induced
Yuta Ojima1, Yuwa Takahashi1, Shogo Miyata2
1Graduate School of Science and Technology, Keio University, Yokohama 223-8522, Japan.
Micromachines
|November 27, 2025
Summary
This study introduces a novel dielectrophoresis (DEP) system for label-free cell analysis. The system accurately distinguishes healthy and cancer cells using DEP forces in microfluidics.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Analytical Chemistry
Background:
- Cell analysis is crucial for diagnostics and research.
- Label-free methods like dielectrophoresis (DEP) avoid dyes/beads.
- Existing methods may lack sensitivity for subtle cell differences.
Purpose of the Study:
- To develop a high-precision single-cell analysis system using DEP.
- To discriminate between healthy and cancer cells based on DEP response.
- To demonstrate sensitive and selective cell classification in biomedical applications.
Main Methods:
- Utilized a microfluidic chamber with an electrode array for DEP forces.
- Integrated flow-induced shear forces for force balance analysis.
- Quantitatively characterized DEP responses for cell discrimination.
Main Results:
- Successfully discriminated between healthy skin cells and cancer cells.
- Achieved high precision in cell classification using DEP.
- Demonstrated effective differentiation even with similar dielectrophoretic properties.
Conclusions:
- The DEP-based system offers a sensitive and selective approach for cell classification.
- This technology has significant potential for biomedical applications, including diagnostics.
- Label-free cell analysis via DEP provides a valuable alternative to traditional methods.
