Assessment of Cell Viability with Single-, Dual-, and Multi-Staining Methods Using Image Cytometry

Area of Science:

• Cell Biology
• Biotechnology
• Analytical Chemistry

Background:

• Accurate cell viability measurement is crucial for cell-based assays.
• Traditional trypan blue exclusion method faces limitations with complex samples like whole blood or low-viability samples.
• Automated image-based cell counters have emerged due to advances in optics and fluorescent dyes.

Purpose of the Study:

• To demonstrate the utility of image-based cytometry for cell viability detection.
• To evaluate single-, dual-, and multi-stain techniques for viability assessment.
• To highlight the advantages of fluorescent viability staining and image cytometry in simplifying sample preparation and analysis.

Main Methods:

• Utilized single-staining with nucleic acid stains (e.g., EB, PI, DAPI) and enzymatic stains (e.g., CFDA, Calcein AM).
• Employed dual-staining methods (e.g., AO/PI, Hoechst/PI) to enumerate viable and nonviable cells.
• Applied a multi-staining method using Hoechst/Calcein AM/PI for comprehensive analysis.

Main Results:

• Fluorescent viability staining effectively excludes cellular debris and nonnucleated cells.
• Image-based cytometry streamlines cell counting and viability measurements, improving efficiency.
• The method simplifies sample preparation by potentially eliminating purification steps.

Conclusions:

• Image-based cytometry provides a robust and efficient alternative to traditional methods for cell viability assessment.
• The use of fluorescent stains enhances accuracy by enabling exclusion of non-relevant cellular components.
• Automated image cytometers offer increased speed, throughput, and visual confirmation of results.