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Simultaneous quantitation of 15 cytokines using a multiplexed flow cytometric assay
1Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
Journal of Immunological Methods
|September 15, 1999
Summary
A new FlowMetrix assay accurately quantifies multiple cytokines simultaneously in small volumes, offering improved sensitivity and reproducibility over ELISA. This multiplexed cytokine analysis provides a more comprehensive view of immune responses.
Area of Science:
- Immunology
- Biotechnology
Background:
- Conventional methods like ELISA for cytokine quantification have limitations.
- Accurate measurement of cytokines is crucial for understanding immune responses.
Purpose of the Study:
- To introduce and validate a novel multiplexed assay for simultaneous cytokine quantification.
- To compare the performance of the new assay with traditional ELISA.
Main Methods:
- Utilized the FlowMetrix system for multiplexed cytokine analysis.
- Quantified 15 cytokines in a 100 microl sample volume.
- Compared results with microtitre ELISA.
Main Results:
- The FlowMetrix assay demonstrated higher accuracy, sensitivity, and reproducibility than ELISA.
- The assay successfully differentiated cytokine production between T helper 1 (T(H)1) and T helper 2 (T(H)2) cells.
- Identified specific cytokine profiles for T(H)1 (IL-2, IL-3, GM-CSF, IFN-gamma) and T(H)2 (IL-4, IL-5, IL-10, IL-13) deviated cells.
Conclusions:
- The FlowMetrix system offers a powerful, efficient, and cost-effective tool for multiplexed cytokine quantification.
- This assay provides a more complete picture of cytokine secretion during immune responses.
- The method is applicable to other soluble products with available antibody pairs.