Single-Cell Isolation Microfluidic Chip Based on Thermal Bubble Micropump Technology.

Area of Science:

• Biotechnology
• Microfluidics
• Cell Biology

Background:

• Single-cell isolation is crucial for advanced biological analyses, including single-cell sequencing, monoclonal antibody development, and drug discovery.
• Traditional methods like flow cytometry (FACS) and laser capture microdissection (LCM) are often complex and low-throughput.
• There is a need for efficient, high-throughput single-cell isolation techniques to advance cell-based research.

Purpose of the Study:

• To develop and present a novel microfluidic chip for efficient single-cell isolation.
• To demonstrate a high-throughput method for isolating individual cells from cell suspensions.
• To validate the chip's performance using both beads and biological cells.

Main Methods:

• A microfluidic chip employing thermal bubble micropump technology for fluid manipulation.
• Single-cell isolation achieved by precisely controlling flow resistance within microchannels.
• Integration of hundreds of single-cell functional modules for parallel processing.
• Elimination of the need for external injection or peristaltic pumps for cell loading.

Main Results:

• The microfluidic chip demonstrated a near 100% capture rate for single polystyrene beads.
• The system achieved approximately 75% capture rate for single cells, indicating successful application to biological samples.
• The integrated design facilitates high-throughput single-cell isolation capabilities.

Conclusions:

• The developed microfluidic chip offers a promising, high-throughput solution for single-cell isolation.
• Thermal bubble micropump technology integrated into microfluidics provides an efficient alternative to traditional methods.
• This technology has significant potential to accelerate single-cell analysis and related fields.