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Evaluation of the phagocytosis of microspheres in V79 cells by flow cytometry

K Fujikawa-Yamamoto, H Yokoe, S Odashima

    Cell Structure and Function
    |February 1, 1987
    PubMed

    Insights

    Phagocytosis of microspheres in V79 cells increased over time, following a sigmoidal pattern. This cellular uptake process was quantified using flow cytometry and described by two key parameters.

    Area of Science:

    • Cell biology
    • Immunology
    • Biophysics

    Background:

    • Phagocytosis is a critical cellular process for immune defense and cellular homeostasis.
    • Understanding phagocytic kinetics in cell lines like V79 is important for toxicological and biological studies.

    Purpose of the Study:

    • To quantify the phagocytosis of microspheres in V79 Chinese hamster lung cells.
    • To characterize the time-dependent kinetics of this phagocytic process.

    Main Methods:

    • Flow cytometry was employed to measure phagocytosis.
    • Fluorescent microspheres (1.8 micron diameter) were used as model particles.
    • The number of V79 cells containing microspheres was quantified over time.

    Main Results:

    • A sigmoidal increase in the number of V79 cells containing fluorescent microspheres was observed over time.
    • The rate of phagocytosis exhibited a characteristic sigmoidal progression.
    • Two parameters were introduced to mathematically describe the observed sigmoidal phagocytosis curves.

    Conclusions:

    • The study successfully quantified microsphere phagocytosis in V79 cells.
    • The sigmoidal kinetics suggest a complex, multi-stage process of cellular uptake.
    • The developed parameters provide a framework for further analysis of phagocytic mechanisms.

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