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Related Experiment Video

Updated: Dec 5, 2025

Highly Sensitive Assay for Measurement of Arenavirus-cell Attachment

Highly Sensitive Assay for Measurement of Arenavirus-cell Attachment

Published on: March 2, 2016

A Cell-Based Capture Assay for Rapid Virus Detection.

Elad Milrot¹, Efi Makdasi¹, Boaz Politi¹

¹The Department of Infectious Diseases, Israel Institute for Biological Research, Ness-Ziona 74100, Israel.

|October 20, 2020

Summary

This study presents a new rapid cell-based assay for isolating and detecting viruses, including West Nile Virus (WNV) and Modified Vaccinia Ankara (MVA). The method utilizes flow cytometry and fluorescence microscopy for quick and reliable virus identification in clinical samples.

Keywords:

Adenovirus Modified Vaccinia Ankara West Nile Virus flow cytometry immuno-fluorescence assay transmission electron microscopy

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Area of Science:

Virology
Immunology
Cell Biology

Background:

Clinical virus detection requires reliable, sensitive, and rapid methods.
Current techniques like genetic, cell culture, and immuno-based assays have limitations.
Virus isolation is essential for accurate identification and analysis of pathogens.

Purpose of the Study:

To introduce a novel, rapid cell-based assay for virus isolation and detection.
To demonstrate the assay's efficacy using model viruses: West Nile Virus (WNV), Modified Vaccinia Ankara (MVA), and Adenovirus.
To validate the method's performance using flow cytometry and immuno-fluorescence microscopy.

Main Methods:

Utilized suspended Vero cells for virus capture via specific antibody labeling.
Employed flow cytometry for quantitative detection and dose-response analysis.
Applied immuno-fluorescence microscopy for visualization and detection.
Tested assay performance with viruses spiked into pooled human serum.

Main Results:

Detected MVA at 3.6e4 pfu/mL and WNV at 1e6 pfu/mL within two hours using flow cytometry.
Sensitivity slightly decreased to 3e6 pfu/mL for WNV in human serum, while MVA detection remained consistent.
The assay proved robust and rapid for detecting model viruses.

Conclusions:

The developed cell-based assay offers a robust and rapid methodology for virus detection.
Flow cytometry and fluorescence microscopy enable efficient virus isolation and identification.
This proof-of-concept assay holds potential for identifying novel and emerging viral pathogens.