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Related Experiment Videos

Single epitope multiple staining to detect ultralow frequency B cells.

S E Townsend1, C C Goodnow, R J Cornall

  • 1The Biomedical Research Centre and Department of Medical Genetics, University of British Columbia, 2222 Health Sciences Mall, BC, V6T 1Z3, Vancouver, Canada. sarah@brc.ubc.ca

Journal of Immunological Methods
|February 28, 2001
PubMed
Summary

We developed a novel single epitope multiple staining (SEMS) method to detect rare cells. This technique allows for the reproducible identification of target cells at frequencies below one in a million.

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Area of Science:

  • Immunology
  • Cell Biology
  • Biotechnology

Background:

  • Detecting rare cells in high background populations is challenging.
  • Existing methods struggle with non-specific binding and probabilistic cell distribution.
  • Need for sensitive and specific cell detection methods.

Purpose of the Study:

  • To introduce a novel method, single epitope multiple staining (SEMS), for detecting ultralow frequency target cells.
  • To enhance sensitivity and specificity in cell detection assays.
  • To enable detection based solely on antigen specificity.

Main Methods:

  • Utilized murine splenocytes seeded with a low number of transgenic B cells.
  • Employed dual staining of a single epitope with two different detectable labels (FITC and biotin).

Related Experiment Videos

  • Applied the single epitope multiple staining (SEMS) technique.

    • Main Results:

    • Successfully reduced background noise from non-specific binding and cell distribution.
    • Achieved reproducible detection of transgenic cells at frequencies below one in a million.
    • Demonstrated detection based solely on antigen specificity.

    Conclusions:

    • The single epitope multiple staining (SEMS) method significantly improves the detection of rare cells.
    • SEMS offers a sensitive and specific approach applicable to various fluorescence-based applications.
    • Potential applications include isolating antigen-specific lymphocytes, genetically modified cells, and infectious organisms.