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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...
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...
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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
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...
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...

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Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice
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Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice

Published on: September 25, 2019

Adaptive immunity to hepatitis C virus.

Mirjam B Zeisel1, Samira Fafi-Kremer, Eric Robinet

  • 1Inserm, U748, 3 rue Koeberlé, F-67000 Strasbourg, France; E-Mails: mirjam.zeisel@unistra.fr (M.B.Z.); samira.fafi-kremer@chru-strasbourg.fr (S.F.-K.); e.robinet@unistra.fr (E.R.); francois.habersetzer@chru-strasbourg.fr (F.H.); thomas.baumert@unistra.fr (T.F.B.).

Viruses
|October 14, 2011
PubMed
Summary
This summary is machine-generated.

Adaptive immune responses are key to Hepatitis C Virus (HCV) infection outcomes. Understanding viral-host interactions and HCV evasion strategies can help develop new prevention and control methods.

Keywords:
T cellsescapeneutralizing antibodiesvaccine developmentviral clearance

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Area of Science:

  • Immunology
  • Virology
  • Hepatology

Background:

  • The precise role of adaptive immunity in Hepatitis C Virus (HCV) infection outcomes remains incompletely understood.
  • Viral-host cell interactions during acute HCV infection are critical for determining viral clearance or chronicity.

Purpose of the Study:

  • To review the role of adaptive immune responses in dictating HCV infection outcomes (clearance vs. persistence).
  • To outline current understanding of HCV immune evasion strategies.
  • To highlight the importance of viral-host interaction mechanisms for developing novel interventions.

Main Methods:

  • Literature review focusing on adaptive immunity and HCV infection.
  • Analysis of viral-host interaction mechanisms during acute and chronic phases.
  • Synthesis of current knowledge on HCV immune evasion tactics.

Main Results:

  • Adaptive immune responses significantly influence whether HCV infection is cleared or becomes chronic.
  • HCV employs various strategies to evade host immune defenses.
  • Specific viral-host interactions during the acute phase are pivotal for infection trajectory.

Conclusions:

  • Elucidating adaptive immunity's role in HCV infection is crucial for clinical outcomes.
  • Understanding HCV evasion mechanisms is essential for designing effective vaccines and therapies.
  • Targeting viral-host interactions offers a promising avenue for HCV prevention and control.