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Related Concept Videos

Hepatitis01:25

Hepatitis

Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
Viral Replication: Lytic Cycle01:20

Viral Replication: Lytic Cycle

Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
Protein Complex Assembly02:41

Protein Complex Assembly

Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Viral Hepatitis I: Introduction01:28

Viral Hepatitis I: Introduction

Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...
Retrovirus Life Cycles01:10

Retrovirus Life Cycles

Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
Viruses with RNA Genomes01:29

Viruses with RNA Genomes

RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...

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Related Experiment Video

Updated: May 17, 2026

A Protocol for Analyzing Hepatitis C Virus Replication
13:04

A Protocol for Analyzing Hepatitis C Virus Replication

Published on: June 26, 2014

Hepatitis C virus-host interactions, replication, and viral assembly.

Ana Shulla1, Glenn Randall

  • 1Department of Microbiology, The University of Chicago, Chicago, IL 60637, United States.

Current Opinion in Virology
|October 23, 2012
PubMed
Summary
This summary is machine-generated.

Hepatitis C virus (HCV) relies on host factors for infection and replication. Understanding these pro-viral host interactions is crucial for developing new models and therapies for HCV.

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Last Updated: May 17, 2026

A Protocol for Analyzing Hepatitis C Virus Replication
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09:35

Development of a Hepatitis B Virus Reporter System to Monitor the Early Stages of the Replication Cycle

Published on: February 1, 2017

Area of Science:

  • Virology
  • Hepatology
  • Molecular Biology

Background:

  • Hepatitis C virus (HCV) is a simple virus heavily reliant on host cell machinery for its life cycle.
  • HCV exhibits restricted tropism across cell types and species, complicating research.
  • Limited availability of infectious clones and cell lines has historically hindered the study of HCV-host interactions.

Purpose of the Study:

  • To review medically relevant pro-viral host factors essential for HCV biology.
  • To highlight the role of these host factors in defining HCV entry, replication, assembly, and tropism.
  • To emphasize the importance of these factors in advancing in vitro and in vivo models for HCV research and therapeutic development.

Main Methods:

  • Literature review focusing on established and emerging HCV-host interactions.
  • Analysis of studies identifying and validating host factors involved in the HCV life cycle.
  • Synthesis of information on the implications of these interactions for HCV pathogenesis and therapeutic strategies.

Main Results:

  • Consensus has emerged on key host-viral interactions governing HCV entry, replication, assembly, and tropism.
  • Several host factors have been identified as critical for supporting HCV infection and replication.
  • These identified host factors are crucial for developing and expanding experimental systems for HCV study.

Conclusions:

  • Medically relevant pro-viral host factors are central to understanding HCV biology.
  • Knowledge of these interactions is vital for improving in vitro and in vivo models of HCV infection and pathogenesis.
  • Targeting these host factors presents a promising avenue for developing novel antiviral therapies against HCV.