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Related Experiment Videos

Antibody-dependent cell-mediated cytotoxicity: a flow cytometry-based assay using fluorophores.

R W Wilkinson1, A E Lee-MacAry, D Davies

  • 1Applied Development Laboratory, Imperial Cancer Research Technology, Dominion House, St Bartholomew's Hospital, EC1A 7BE, London, UK.

Journal of Immunological Methods
|October 31, 2001
PubMed
Summary

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A new flow cytometry assay accurately measures antibody-dependent cell-mediated cytotoxicity (ADCC) without radiochemicals. This method enables single-cell analysis for evaluating antibody-based therapies.

Area of Science:

  • Immunology
  • Cell Biology
  • Biotechnology

Background:

  • Antibody-dependent cell-mediated cytotoxicity (ADCC) is a critical immune mechanism.
  • Assessing ADCC traditionally involves radiochemicals, posing safety and handling challenges.
  • A need exists for a safer, more precise method to quantify ADCC.

Purpose of the Study:

  • To develop and validate a novel flow cytometry-based assay for determining ADCC.
  • To offer a non-radioactive alternative for ADCC measurement.
  • To establish a reliable method for evaluating antibody therapeutics.

Main Methods:

  • Target cells were labeled with the membrane dye PKH-26.
  • Incubation of labeled target cells with effector cells and antibody.
  • Assessment of target cell death using the viability probe TO-PRO-3 iodide (TP3) via flow cytometry.

Related Experiment Videos

  • Analysis of cell death on a single-cell basis within the PKH-26+ population.

    • Main Results:

    • The developed assay allows for precise discrimination of target cells.
    • Cell death within the target cell population was accurately quantified.
    • The assay demonstrated accuracy and reproducibility in ADCC determination.
    • The method successfully avoids the use of hazardous radiochemicals.

    Conclusions:

    • A novel, non-radioactive flow cytometry assay for ADCC determination has been successfully developed.
    • This assay provides accurate, reproducible, single-cell level analysis of ADCC.
    • The method holds significant potential as a valuable tool for assessing antibody-based therapeutics.