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Classification and properties of 64 multiplexed microsphere sets

J R Kettman1, T Davies, D Chandler

  • 1University of Texas Southwestern Medical Center, Dallas 75235-9048, USA. kettman@dcaf.swmed.edu

Cytometry
|October 17, 1998
PubMed
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This study presents a new method for analyzing multiple analytes in one sample using flow cytometry and uniquely coded microspheres. This multiplexed assay allows for rapid, robust, and simultaneous measurement of up to 64 parameters per sample.

Area of Science:

  • Biotechnology
  • Analytical Chemistry
  • Immunology

Background:

  • Multiplexed assays enable simultaneous detection of multiple analytes, increasing efficiency in biological and chemical analysis.
  • Flow cytometry offers high-throughput and sensitive detection capabilities for various applications.

Purpose of the Study:

  • To describe a practical method for analyzing multiple analytes in a single sample using flow cytometry.
  • To detail the development and properties of a microsphere-based multiplexing system.
  • To evaluate the performance and sensitivity of this novel measurement system.

Main Methods:

  • Utilized sets of microspheres embedded with distinct fluorophores for individual analyte identification.
  • Employed bench-top flow cytometers with custom hardware and software for data acquisition and real-time analysis.

Related Experiment Videos

  • Developed protocols for microsphere characterization, cytometer calibration, and assay optimization.

    • Main Results:

    • Demonstrated a multiplexed assay capable of analyzing up to 64 analytes simultaneously in a single sample.
    • Achieved robust and reproducible measurements due to repeated analysis of each microsphere set.
    • Highlighted the speed of the flow cytometry system, processing hundreds of measurements per second.

    Conclusions:

    • The described microsphere-based flow cytometry method provides a practical, efficient, and sensitive approach for multiplexed analyte detection.
    • This system offers significant advantages in terms of simultaneous measurement capacity, speed, and robustness compared to traditional methods.
    • Further characterization of microsphere properties and cytometer calibration is crucial for optimizing assay sensitivity.