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Updated: Jun 9, 2026

Immunofluorescence to Monitor the Cellular Uptake of Human Lactoferrin and its Associated Antiviral Activity Against the Hepatitis C Virus
Published on: October 1, 2015
Cell-based hepatitis C virus infection fluorescence resonance energy transfer (FRET) assay for antiviral compound
1Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA.
Insights
Developing new Hepatitis C virus (HCV) antivirals is crucial. This study details a cell-based high-throughput assay to screen compounds for inhibiting HCV infection, aiding drug discovery.
Area of Science:
- Virology
- Hepatology
- Drug Discovery
Background:
- Hepatitis C virus (HCV) infection is a major global health issue, causing chronic liver disease.
- Limited therapeutic and preventative options necessitate the development of novel HCV antivirals.
- High-throughput screening assays are vital for identifying potential antiviral compounds.
Purpose of the Study:
- To describe methods for assessing the in vitro efficacy of HCV antivirals.
- To introduce a cell-based high-throughput fluorescence resonance energy transfer (FRET) assay for HCV infection screening.
- To enable the identification of inhibitors targeting any stage of the HCV life cycle.
Main Methods:
- Utilizing a cell-based high-throughput FRET assay to screen for HCV infection inhibitors.
- Implementing basic protocols for compound screening and efficacy analysis.
- Employing support protocols for infectious HCV propagation and infectivity measurement.
Main Results:
- The described FRET assay allows for efficient screening of numerous compounds.
- The methodology facilitates the identification of inhibitors effective against HCV infection.
- The assay can detect inhibitors targeting various steps in the viral life cycle.
Conclusions:
- The cell-based high-throughput FRET assay is a valuable tool for discovering novel HCV antivirals.
- This screening approach aids in addressing the global healthcare concern of HCV infection.
- The described methods support the advancement of HCV therapeutic strategies.
Abstract:
Hepatitis C virus (HCV) affects an estimated 3% of the population and is a leading cause of chronic liver disease worldwide. Since HCV therapeutic and preventative options are limited, the development of new HCV antivirals has become a global health care concern. This has spurred the development of cell-based infectious HCV high-throughput screening assays to test the ability of compounds to inhibit HCV infection. This unit describes methods that may be used to assess the in vitro efficacy of HCV antivirals using a cell-based high-throughput fluorescence resonance energy transfer (FRET) HCV infection screening assay, which allows for the identification of inhibitors that target HCV at any step in the viral life cycle. Basic protocols are provided for compound screening during HCV infection and analysis of compound efficacy using an HCV FRET assay. Support protocols are provided for propagation of infectious HCV and measurement of viral infectivity.

