Related Experiment Video
Updated: Sep 17, 2025

Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice
Published on: September 25, 2019
Chronic hepatitis B virus persistence: Mechanisms, consequences and implications for achieving cure
Christopher Georgi1, Simmone D'souza2, Carla Osiowy3
1Ottawa Hospital Research Institute, Canada.
Hepatitis B virus (HBV) persists in hepatocytes via covalently closed circular DNA (cccDNA) and integrated DNA, hindering a cure. New therapies aim to disrupt these persistent viral forms for chronic Hepatitis B infection.
Area of Science:
- Virology
- Hepatology
- Infectious Diseases
Background:
- Hepatitis B virus (HBV) establishes persistent infection within hepatocytes.
- Viral persistence is primarily attributed to intranuclear covalently closed circular DNA (cccDNA) and integrated double-stranded linear DNA (dslDNA).
- These viral reservoirs present significant obstacles to achieving a functional or sterilizing cure for chronic HBV infection.
Purpose of the Study:
- To provide an overview of HBV persistence mechanisms.
- To discuss the negative implications of persistent HBV for chronic infection.
- To review advancements in therapeutic strategies targeting HBV persistence.
Main Methods:
- Literature review focused on virology and HBV pathogenesis.
- Analysis of studies on HBV cccDNA and integrated DNA.
- Examination of emerging HBV therapeutic approaches.
Main Results:
- HBV persistence is maintained by stable intranuclear viral DNA forms (cccDNA and integrated dslDNA).
- These forms contribute to the chronicity and difficulty in eradicating HBV infection.
- Recent therapeutic developments show promise in disrupting these persistent viral reservoirs.
Conclusions:
- HBV persistence is a complex challenge driven by resilient viral DNA structures within hepatocytes.
- Effective HBV therapies must address both cccDNA and integrated DNA to achieve a cure.
- Ongoing research into novel therapeutic strategies is crucial for overcoming HBV persistence.
More Related Videos
11:14Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection
Published on: November 7, 2018
10:37Analysis 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
Retrovirus Life Cycles
Viruses with RNA Genomes
Chronic Bowel Disorders: Introduction
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Mechanisms of Retrovirus-induced Cancers
Chronic Pancreatitis I: Introduction
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
Hepatic Drug Excretion: Enterohepatic Cycling
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...