Determination of lymphocyte division by flow cytometry

Area of Science:

• Cell Biology
• Immunology
• Biotechnology

Background:

• Current cell division tracking methods are limited, offering only single or few division insights.
• Existing methods quantify overall cell division but lack individual cell history resolution.

Purpose of the Study:

• To develop a new technique for tracking multiple successive cell divisions in individual cells.
• To enable immunophenotyping of dividing cells alongside division history analysis.

Main Methods:

• Utilizing an intracellular, fluorescein-derived fluorescent label that is equally divided between daughter cells.
• Applying the technique to both in vitro cell cultures and in vivo adoptively transferred cells.
• Employing flow cytometry for the resolution of multiple cell generations.

Main Results:

• The new method successfully resolves multiple successive cell generations.
• The technique allows for the simultaneous immunophenotyping of dividing cells using compatible fluorochromes.
• Demonstrated applicability in both in vitro and in vivo settings.

Conclusions:

• This novel technique provides a powerful tool for detailed analysis of cell division history.
• It overcomes limitations of existing methods by enabling tracking of individual cell lineages over multiple generations.
• The method facilitates combined analysis of cell proliferation and immunophenotype.