Hepatitis B virus receptors and molecular drug targets

Eloi R Verrier1,2, Che C Colpitts1,2, Camille Sureau3

  • 1Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Université de Strasbourg, 3 Rue Koeberlé, 67000, Strasbourg, France.

Insights

Chronic hepatitis B virus (HBV) infection causes liver disease globally. Targeting HBV entry offers a promising strategy for developing new therapies to cure the infection, as current treatments only control it.

Area of Science:

  • Hepatology
  • Virology
  • Molecular Biology

Background:

  • Chronic hepatitis B virus (HBV) infection is a major global cause of liver disease, including cirrhosis and hepatocellular carcinoma.
  • Existing therapies can control HBV infection but do not achieve a cure, highlighting the need for novel antiviral strategies.
  • HBV entry into host cells is a critical early step in infection, making it a potential therapeutic target.

Purpose of the Study:

  • To review the molecular virology and cell biology of HBV entry.
  • To summarize the discovery and development of new HBV entry inhibitors.
  • To discuss the potential of these inhibitors in future HBV infection treatment.

Main Methods:

  • Literature review of HBV entry mechanisms.
  • Analysis of recent research on HBV entry inhibitors.
  • Discussion of therapeutic implications for chronic hepatitis B.

Main Results:

  • HBV entry involves complex molecular and cellular processes.
  • Several novel HBV entry inhibitors have been identified and developed.
  • Targeting viral entry presents a promising avenue for achieving a cure for HBV infection.

Conclusions:

  • Blocking HBV entry is a viable strategy for developing curative therapies.
  • Further research and development of HBV entry inhibitors are crucial for advancing treatment options.
  • Inhibiting HBV entry could significantly impact the management of chronic hepatitis B worldwide.

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.
29
Targets for Drug Action: Overview01:26

Targets for Drug Action: Overview

Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
11.2K
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
4.8K
Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
76
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...
15
Drug Binding to Blood Components01:30

Drug Binding to Blood Components

When drugs enter systemic circulation, they interact with various components of the blood, including proteins such as human serum albumin (HSA), α1-acid glycoprotein (AAG), lipoproteins, globulins, and red blood cells (RBCs).
HSA is the most abundant plasma protein and is vital in drug binding. It contains distinct drug-binding sites, with different drugs exhibiting affinity for specific sites. There are three main drug-binding domains for HSA: sites I, II, and III. These domains are...
644