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High-throughput Detection Method for Influenza Virus
Published on: February 4, 2012
A rapid method for immunotitration of influenza viruses using flow cytometry
R Lonsdale1, M G Pau, M Oerlemans
1Vaccine R&D Division, Crucell Holland BV, P.O. Box 2048, 2301 CA, Leiden, Netherlands.
Journal of Virological Methods
|May 22, 2003
Summary
A new fluorescence-activated cell sorting (FACS) assay accurately quantifies influenza virus levels. This faster, specific method offers a viable alternative to traditional plaque assays for influenza research and vaccine development.
Area of Science:
- Virology
- Immunology
- Cell Biology
Background:
- Accurate influenza virus titration is crucial for research and vaccine development.
- Traditional plaque assays using Madin-Darby canine kidney (MDCK) cells are time-consuming and labor-intensive.
Purpose of the Study:
- To develop and validate a novel, rapid, and specific assay for influenza virus titration.
- To compare the efficacy of the novel assay against the established plaque assay.
Main Methods:
- Developed a fluorescence-activated cell sorting (FACS) based immunotitration assay.
- Detected intracellular viral nucleoprotein (NP) using specific antibodies.
- Validated the assay using diverse influenza virus strains (Type A and B).
- Correlated results with traditional plaque assay titration.
Main Results:
- Demonstrated a mathematical correlation between FACS immunotitration and plaque assay results.
- Confirmed assay specificity using type-specific NP antibodies for influenza A and B.
- The FACS-based assay proved to be faster and equally accurate.
Conclusions:
- FACS-based immunotitration is a reliable and efficient alternative to classical plaque assays for influenza virus titration.
- This novel method enhances speed and specificity in influenza diagnostics and research.
- The assay supports advancements in influenza research and vaccine development.
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