Microfluidic device for rapid digestion of tissues into cellular suspensions

Area of Science:

• Biotechnology
• Microfluidics
• Cell Biology

Background:

• Harvesting single cells from tissues is critical for diagnostics, tissue engineering, and regenerative medicine.
• Current methods using proteolytic digestion and mechanical treatments are limited by long processing times, low yields, and high manual labor.
• There is a need for improved methods to efficiently isolate viable single cells from complex tissue samples.

Purpose of the Study:

• To develop and validate a novel microfluidic device for accelerated and efficient tissue digestion.
• To improve the speed, yield, and viability of single cells obtained from tissue samples.
• To reduce the reliance on manual mincing techniques and enable downstream microfluidic applications.

Main Methods:

• A microfluidic device was designed with channels to apply hydrodynamic shear forces to tissue specimens.
• The device utilizes precision fluid flows to enhance enzyme-tissue contact and accelerate digestion.
• Animal organs were used to compare the device's performance against conventional scalpel mincing and digestion.

Main Results:

• The microfluidic digestion device demonstrated superior performance compared to conventional methods in recovering DNA and viable single cells.
• The device significantly reduced sample processing time and preserved cell viability.
• Hydro-mincing capabilities integrated into the device eliminated or reduced the need for manual scalpel mincing.

Conclusions:

• The novel microfluidic digestion device offers a faster, more efficient, and less labor-intensive method for single-cell isolation from tissues.
• This technology has the potential to advance cell-based diagnostic technologies and facilitate cell isolation for tissue engineering and regenerative medicine.
• Integration with downstream microfluidic operations offers further capabilities for advanced cell processing and analysis.