Versatile and High-throughput Force Measurement Platform for Dorsal Cell Mechanics

Area of Science:

• Biophysics
• Cellular Mechanics
• Microfluidics

Background:

• Understanding cell mechanics is crucial for various biological processes.
• Existing methods for measuring cell mechanical properties can be limited in throughput and scope.
• In situ analysis of force-dependent cellular processes requires advanced techniques.

Purpose of the Study:

• To develop a high-throughput microfluidics technique for in situ measurement of cell mechanics.
• To enable precise modulation of forces applied to cells for studying force-dependent processes.
• To quantify molecular binding strengths, local traction forces, and viscoelastic properties.

Main Methods:

• Utilized a microfluidics platform for controlled force application (~14 pN to 2 nN) on cells.
• Employed time-lapse imaging to capture cellular responses to applied forces.
• Applied single particle tracking analysis to determine mechanical parameters.
• Integrated microfluidic principles with computational fluid dynamics for analysis.

Main Results:

• Successfully measured cell mechanics parameters at the dorsal cell side.
• Demonstrated simultaneous measurement of up to 50 events per experiment.
• Validated the technique's ability to perturb and analyze force-dependent cellular processes.
• Achieved physiologically relevant, reliable, economic, and efficient measurements.

Conclusions:

• The developed microfluidics technique offers a powerful tool for high-throughput cell mechanics analysis.
• This method provides new insights into molecular binding, traction forces, and cell viscoelasticity.
• The approach is suitable for studying a wide range of force-dependent cellular functions.