Hcv Replicon
Hcv Replicon - Related Videos
16:49
Two Methods of Heterokaryon Formation to Discover HCV Restriction Factors
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2012
We describe two methods for conditional trans-complementation of hepatitis C virus (HCV) assembly and the completion of the full viral life cycle, which rely on heterokaryon formation. These techniques are suitable to screen for cell lines that express dominant restriction factors, which preclude production of infectious HCV progeny.
06:28
Immunofluorescence to Monitor the Cellular Uptake of Human Lactoferrin and its Associated Antiviral Activity Against the Hepatitis C Virus
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Cited by 9 •
2015
The human lactoferrin (hLF) is a component of the immune system. In this study, immunofluorescence assays are used to demonstrate both the hepatocellular uptake of hLF and a qualitative reduction in the hepatitis C virus replication upon treatment with hLF.
13:04
A Protocol for Analyzing Hepatitis C Virus Replication
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Cited by 2 •
2014
Hepatitis C Virus (HCV) is a major human pathogen that causes liver disorders, including cirrhosis and cancer. An HCV infectious cell culture system is essential for understanding the molecular mechanism of HCV replication and developing new therapeutic approaches. Here we describe a protocol to investigate various stages of the HCV replication cycle.
03:27
Preparing Cells to Analyze Intracellular Uptake and Activity of an Antiviral Agent
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2026
Source: Allaire, A., et al. Immunofluorescence to Monitor the Cellular Uptake of Human Lactoferrin and its Associated Antiviral Activity Against the Hepatitis C Virus. J. Vis. Exp. (2015).The video demonstrates the procedure for preparing cells to assess the intracellular uptake and activity of an antiviral agent against the hepatitis C virus.
07:24
Single-Cell Multiplexed Fluorescence Imaging to Visualize Viral Nucleic Acids and Proteins and Monitor HIV, HTLV, HBV, HCV, Zika Virus, and Influenza Infection
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Cited by 6 •
2020
Presented here is a protocol for a fluorescence imaging approach, multiplex immunofluorescent cell-based detection of DNA, RNA, and protein (MICDDRP), a method capable of simultaneous fluorescence single-cell visualization of viral protein and nucleic acids of different type and strandedness. This approach can be applied to a diverse range of systems.
FAQs
The NS3 through NS5B proteins provide the core viral machinery needed to copy HCV RNA. They function together with host-cell factors at intracellular membranes, creating a replication environment that supports genome synthesis. Examining these proteins individually or in combination allows researchers to investigate viral protein function and identify mechanisms that may be disrupted by antiviral compounds.
Intracellular membranes provide the setting where nonstructural viral proteins assemble with host factors for RNA copying. This organization is important because replicon activity depends on the coordinated action of viral and cellular components rather than on viral proteins acting in isolation. Studying this membrane-associated process helps clarify how HCV organizes its replication machinery inside cultured cells.
Removing the structural genes prevents the engineered RNA system from supporting production of infectious virus while preserving the nonstructural replication machinery. Researchers can therefore examine RNA replication in cultured cells under more controlled conditions. The replacement region can also carry a selectable marker or reporter, linking cell behavior or measurable signal to replicon activity.
A selectable marker helps researchers identify or maintain cells that contain an active replicon, whereas a reporter gene provides a measurable signal associated with the system. These components make replication easier to monitor experimentally and support comparisons between conditions. Their inclusion allows investigators to quantify changes in replicon behavior when viral proteins or antiviral compounds are examined.
A typical study introduces the engineered HCV RNA system into cultured cells, maintains or identifies replicon-containing cells through the incorporated selectable feature, and measures replication using the available reporter or other readout. Researchers then compare signals across experimental conditions to assess viral protein function or determine whether a compound changes RNA replication.
Researchers may choose this system when they need to focus specifically on viral RNA replication without producing infectious virus. The replicon offers a safer and more controlled setting for examining nonstructural proteins, host-factor interactions, and replication-associated responses in cultured cells. It is especially useful when experiments require repeated measurement or comparison across many conditions.
Researchers expose replicon-containing cultured cells to candidate compounds and measure changes in the replication-associated signal. A reduced signal can indicate that the compound interferes with the RNA replication process represented by the system. This approach supports screening of antiviral molecules, including direct-acting drugs, while connecting compound effects to the HCV replication machinery.