Related Experiment Video

Updated: May 22, 2026

A Protocol for Analyzing Hepatitis C Virus Replication
13:04

A Protocol for Analyzing Hepatitis C Virus Replication

Published on: June 26, 2014

Cytokine/chemokine patterns connect host and viral characteristics with clinics during chronic hepatitis C

Antonios Katsounas1, Martin Trippler, Shyam Kottilil

  • 1Department of Gastroenterology and Hepatology, University Hospital of Essen, Germany. antonios.katsounas@uk-essen.de

European Journal of Medical Research
|May 15, 2012
PubMed

Insights

This study identifies key immune response genes, TNFRSF1A and CCR5, associated with hepatitis C virus (HCV) treatment outcomes and disease progression. These findings highlight potential molecular targets for improving patient response to therapy.

Area of Science:

  • Immunology
  • Hepatology
  • Genomics

Background:

  • Chronic hepatitis C virus (HCV) infection involves complex virus-host interactions impacting clinical outcomes.
  • Liver pathology and HCV genotype are critical determinants of treatment success.
  • Understanding in vivo transcriptional responses in HCV is crucial but incomplete.

Purpose of the Study:

  • To investigate in vivo transcriptional responses in peripheral blood of HCV patients.
  • To identify gene expression profiles correlating with treatment response, viral factors, and liver disease severity.
  • To uncover molecular pathways and targets involved in HCV infection and treatment.

Main Methods:

  • Microarray analysis of peripheral whole blood samples from 36 therapy-naïve HCV patients.
  • Linear regression to identify gene expression correlations with 7 clinical variables (SVR, NR, ETR, VB, genotype, fibrosis, inflammation).
  • Hierarchical clustering and functional annotation (DAVID) to analyze gene expression patterns.

Main Results:

  • 1,697 genes showed significant correlations; cell differentiation, immune response, and apoptosis were prominent.
  • Expression profiles were enriched in cytokine/chemokine activity.
  • Four immune genes (SMAD3, IL1RAP, TNFRSF1A, CCR5) were identified, with TNFRSF1A and CCR5 correlating with multiple variables.

Conclusions:

  • Identified molecular targets within the innate and adaptive immune systems.
  • Validated transcriptional specificity in vivo.
  • Suggests significant involvement of TNFRSF1A and CCR5 in distinct HCV treatment outcomes.
Abstract

More Related Videos

Two Methods of Heterokaryon Formation to Discover HCV Restriction Factors16:49

Two Methods of Heterokaryon Formation to Discover HCV Restriction Factors

Published on: July 16, 2012

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix10:37

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix

Published on: October 20, 2021

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 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...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Cirrhosis II: Pathophysiology01:24

Cirrhosis II: Pathophysiology

Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to structural...