Separation of apoptotic cells using a microfluidic device

Area of Science:

• Biotechnology
• Cell Biology
• Microfluidics

Background:

• Apoptosis is programmed cell death crucial for development and disease.
• Separating apoptotic cells is vital for research and diagnostics.
• Existing methods can be complex or require large equipment.

Purpose of the Study:

• To develop a highly sensitive microfluidic device for selective apoptotic cell separation.
• To utilize magnetic bead-based cell labeling for efficient sorting.
• To validate the device's performance against commercial flow cytometry.

Main Methods:

• Apoptotic Jurkat cells were labeled with magnetic beads (0.8 µm diameter) via the C2A protein targeting phosphatidylserine.
• The labeled cell mixture was processed through a microfluidic channel.
• A 0.3 T permanent magnet was employed to separate the magnetic bead-labeled apoptotic cells.

Main Results:

• The microfluidic device demonstrated high sensitivity in separating apoptotic cells.
• Separation accuracy showed 96% agreement with results from a commercial flow cytometer.
• The system successfully sorted apoptotic cells in a miniaturized format.

Conclusions:

• The developed microfluidic device provides an effective and sensitive platform for apoptotic cell separation.
• This technology offers a miniaturized alternative to conventional cell sorting methods.
• The device's high accuracy makes it suitable for various research and diagnostic applications.