Quantifying CFSE Label Decay in Flow Cytometry Data.

Area of Science:

• Cell biology
• Biophysics
• Mathematical modeling

Background:

• Cell proliferation assays are crucial for studying cell division and growth.
• Carboxyfluorescein succinimidyl ester (CFSE) is a widely used intracellular dye for tracking cell division.
• Understanding label decay kinetics is essential for accurate proliferation analysis.

Purpose of the Study:

• To develop and validate mathematical models for CFSE label decay in cell proliferation assays.
• To characterize and explain the multiple decay rates observed in CFSE-stained cells.
• To compare the performance of different time-dependent decay models.

Main Methods:

• Development of a series of mathematical models for label decay.
• Utilizing data from cell proliferation assays with CFSE staining.
• Validation of models using data from two healthy patients.
• Comparison of models using the Akaike Information Criteria (AIC).
• Application of time-dependent decay models, including logistic and Gompertz models.

Main Results:

• Successfully developed models that accurately represent CFSE label decay.
• Identified and characterized multiple distinct decay rates within the assay data.
• Demonstrated that logistic and Gompertz models effectively explain the observed decay patterns.
• Validated model performance using patient-derived experimental data.

Conclusions:

• The developed models provide a robust framework for analyzing CFSE label decay.
• Time-dependent models like logistic and Gompertz are suitable for describing complex decay kinetics.
• Accurate modeling of label decay enhances the reliability of cell proliferation assay results.