High-throughput deterministic pairing and coculturing of single cells in a microwell array using combined...

Area of Science:

• Biomedical Engineering
• Cell Biology
• Microfluidics

Background:

• Single-cell coculture is vital for understanding cellular interactions and disease mechanisms.
• Existing methods lack efficiency and determinism for high-throughput single-cell pairing and traceable coculture.

Purpose of the Study:

• To develop a microfluidic device for high-throughput, deterministic single-cell pairing and traceable coculture.
• To overcome limitations of current techniques in cell pairing efficiency, throughput, determinacy, and traceability.

Main Methods:

• A novel microfluidic device combining hydrodynamic and recirculation flow capture.
• A two-step method involving sequential single-cell capture in a meandering channel and microwell array.
• Demonstration of double and triple single-cell pairings.

Main Results:

• Achieved high-throughput and deterministic single-cell pairing with improved efficiency and traceability.
• Demonstrated double single-cell pairing efficiency of 72.2% and triple single-cell pairing efficiency of 38.0%.
• Successfully investigated cellular engulfment between two breast cell lines on the microfluidic chip.

Conclusions:

• The developed microfluidic device offers an efficient and reliable platform for single-cell coculture.
• This technology facilitates the study of cellular interactions, such as cellular engulfment and tumor sphere formation.
• Provides a valuable tool for advancing biomedical research and therapeutic development.