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Related Experiment Videos

Monocyte purification with counterflow centrifugation monitored by continuous flow cytometry

P H De Mulder, J M Wessels, D A Rosenbrand

    Journal of Immunological Methods
    |January 1, 1981
    PubMed
    Summary

    This study demonstrates counterflow centrifugation with continuous monitoring to effectively separate monocytes and lymphocytes from blood. The method achieves high purity and recovery rates for both cell types, crucial for research and clinical applications.

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    Area of Science:

    • Cellular biology
    • Biotechnology
    • Hematology

    Background:

    • Accurate isolation of mononuclear cells, including monocytes and lymphocytes, is essential for various biological and clinical applications.
    • Traditional cell separation methods can be time-consuming and may result in lower purity or viability.

    Purpose of the Study:

    • To develop and validate a method for efficient and high-purity separation of monocytes and lymphocytes using counterflow centrifugation.
    • To establish an optimal separation point for monocytes and lymphocytes based on individual donor characteristics.

    Main Methods:

    • Utilized counterflow centrifugation with continuous monitoring of cell light scatter for real-time cell analysis.
    • Determined optimal separation parameters, including centrifugal velocities, for mononuclear cell suspensions.

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  • Quantified the purity, recovery, and viability of isolated monocyte and lymphocyte populations.

    • Main Results:

    • Established an optimal separation point for monocytes and lymphocytes at centrifugal velocities between 2348-2444 rpm with a constant flow rate of 15 ml/min.
    • Achieved high purity for monocytes (92.4% +/- 1.4%) and lymphocytes (98.9% +/- 0.7%).
    • Reported high recovery rates for monocytes (84.1% +/- 4.1%) and lymphocytes (92% +/- 4.3%), with overall cell recovery exceeding 91.6% and viability above 98%.

    Conclusions:

    • Continuous monitoring during counterflow centrifugation provides an effective means for precise cell type recognition and separation.
    • This optimized method enables the isolation of highly pure monocyte and lymphocyte populations with excellent recovery and viability.
    • The technique offers a reliable approach for mononuclear cell isolation, suitable for research and potential clinical use.