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Related Experiment Videos

Multiplexed microsphere-based flow cytometric assays.

Kathryn L Kellar1, Marie A Iannone

  • 1National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA. klk@cdc.gov

Experimental Hematology
|November 9, 2002
PubMed
Summary
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Flow cytometry utilizes fluorescent microspheres for calibrating instruments and as solid supports in molecular assays. This technology enables high-throughput detection of hundreds of analytes simultaneously, advancing clinical diagnostics and research.

Area of Science:

  • Biotechnology
  • Analytical Chemistry
  • Immunology

Background:

  • Flow cytometry is a crucial technique in clinical diagnostics and research.
  • Beyond cell analysis, flow cytometers can detect micron-range particles like microspheres.
  • Microspheres have been used for 20 years as calibrators and solid supports in flow cytometry.

Purpose of the Study:

  • To highlight the versatility of microspheres in flow cytometry applications.
  • To showcase advancements in microsphere-based assays for multiplexed analysis.
  • To emphasize the potential of flow cytometry with microspheres to replace traditional methods.

Main Methods:

  • Utilizing inert microspheres of varying sizes and fluorochromes for detection.
  • Adsorbing or chemically coupling diverse molecules (proteins, DNA, lipids) to microsphere surfaces.

Related Experiment Videos

  • Employing spectrally distinct microspheres for multiplexed assays in a single sample volume.

    • Main Results:

    • Microspheres serve as effective calibrators and solid supports for molecular reactions.
    • Multiplexed assays using spectrally distinct microspheres enable simultaneous analysis of multiple analytes.
    • Successful applications include cytokine quantitation, SNP genotyping, and nuclear receptor interaction studies.

    Conclusions:

    • Fluorescent microspheres significantly expand the capabilities of flow cytometry.
    • Multiplexed microsphere-based assays offer speed, sensitivity, and accuracy.
    • This technology holds potential to revolutionize clinical diagnostics and research by enabling simultaneous analysis of hundreds of analytes.