Real-Time Deformability Cytometry: Label-Free Functional Characterization of Cells

Area of Science:

• Biophysics
• Cell Biology
• Microfluidics

Background:

• Real-time deformability cytometry (RT-DC) is a microfluidic technique for high-throughput cell analysis.
• It measures cell morphology and rheology by deforming cells using hydrodynamic forces in a constricted channel.
• RT-DC captures up to 1000 cells/s without mechanical contact or staining, storing images for further analysis.

Purpose of the Study:

• To address the analytical challenges posed by the abundance of parameters in RT-DC data.
• To provide standardized guidelines for measuring and post-processing RT-DC data.
• To facilitate the interpretation of mechanical readouts from RT-DC.

Main Methods:

• Utilizing microfluidic channels for hydrodynamic cell deformation.
• Real-time quantification of cell morphology and rheology.
• Image segmentation for detailed cellular analysis.

Main Results:

• RT-DC is sensitive to cytoskeletal alterations, enabling differentiation of cell cycle phases.
• The technique can identify distinct subpopulations within whole blood samples.
• RT-DC can detect mechanical stiffening in cells entering a dormant state.

Conclusions:

• Standardized guidelines are crucial for the accurate interpretation of RT-DC data.
• RT-DC is a versatile tool for studying cell mechanics and heterogeneity.
• This work aims to enhance the analytical reproducibility and application scope of RT-DC.