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Hepatitis B virus surface antigen messenger RNA (HBsAg mRNA)

Target: HBsAg mRNA
Molecular classification: Other (viral mRNA)

Overview

Hepatitis B virus surface antigen messenger RNA (HBsAg mRNA) is an RNA transcript produced by the hepatitis B virus (HBV) that acts as a template for the translation of the HBsAg protein. This protein is the major envelope antigen of the virus and is essential for viral assembly, infectivity, and immune recognition. Measurement of the HBsAg mRNA is used primarily in research as a proxy for active HBV transcription, whereas the HBsAg protein is a clinically established marker for hepatitis B infection[6][1]. Antiviral strategies are under development to directly target HBV RNAs, including HBsAg mRNA, to suppress HBsAg expression and modulate the course of chronic HBV infection.

Other names: Hepatitis B surface antigen mRNAHBV S gene transcript

Mechanism of action

Blockade or degradation of HBsAg mRNA to prevent HBsAg protein synthesis, reducing viral antigenemia and viral replication

Biological functions

Template for translation of hepatitis B virus surface antigen (HBsAg)Viral protein synthesis

Disease associations

Infection (Hepatitis B virus infection)Marker for HBV replication

Safety considerations

Off-target effects and delivery challenges are relevant to RNA-targeting drug approaches rather than to the mRNA itself

Interacting drugs

Nucleic acid polymers (NAPs) targeting HBV RNA (investigational)

1 more in the full profile.

Biomarkers

HBsAg mRNA levels (research/experimental)Serum HBsAg protein (standard for infection monitoring, but not the mRNA itself)

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