Morphology-based assessment of Cd2+ cytotoxicity using microfluidic image cytometry (microFIC)

Area of Science:

• Biotechnology
• Cell Biology
• Toxicology

Background:

• Microfluidic systems offer automated, high-throughput capabilities for in vitro cell-based assays.
• Assessing cytotoxicity, particularly chemically induced apoptosis, requires efficient and reliable methods.

Purpose of the Study:

• To develop and validate a microfluidic system combined with morphology-based image cytometry for assessing cadmium (Cd2+) induced apoptosis.
• To establish an efficient in situ method for quantifying cell death progression.
• To evaluate the correlation between cell morphology changes and reactive oxygen species (ROS) generation.

Main Methods:

• Integration of a microfluidic cells-on-chip system with morphology-based image cytometric analysis.
• Assessment of apoptosis in Chang liver cells induced by Cd(2+).
• Development of an in situ monitoring method for quantifying cell death events.

Main Results:

• The morphology-based microfluidic image cytometric (microFIC) method demonstrated valid assessment of Cd(2+) induced apoptosis.
• The estimated EC(50) value showed reasonable agreement with literature data.
• A strong correlation was observed between altered cell morphology (circularity) and reactive oxygen species (ROS) generation.

Conclusions:

• The developed morphology-based microFIC approach is an easy and efficient method for assessing cytotoxicity.
• This method is adaptable for high-throughput screening platforms for in vitro cytotoxicity and drug screening assays.
• Microfluidics combined with image cytometry provides a powerful tool for toxicological studies.