Hepatitis B virus messenger RNA (HBV mRNA)

Hepatitis B virus messenger RNAs (HBV mRNAs) refer to a set of viral RNA molecules transcribed from the covalently closed circular DNA (cccDNA) of the hepatitis B virus in infected hepatocytes. These transcripts include pregenomic RNA (pgRNA), core mRNA, X mRNA, and various surface antigen mRNAs, all of which function as templates for viral protein synthesis and genome replication. In particular, pgRNA serves as both mRNA for viral polymerase/core proteins and as a template for reverse transcription to create new viral DNA genomes[1][2][3][4][5]. HBV mRNAs also play regulatory roles by interacting with host microRNAs and proteins, influencing viral replication, maintenance of infection, and pathogenic responses such as fibrosis and hepatocarcinogenesis[1]. Because HBV mRNAs are essential for the viral life cycle, they represent a potential therapeutic target, especially for RNA silencing and disruption strategies—though no direct, clinically approved drugs for HBV mRNA targeting presently exist[1]. The term "Hepatitis B virus messenger RNAs" is broad and describes a category of molecules rather than one specific discrete target—thus, from the perspective of drug targeting, "HBV pregenomic RNA" would be the most commonly referenced specific RNA target.

Other names

Hepatitis B virus RNAHBV RNAHepatitis B virus pregenomic RNA (pgRNA)Hepatitis B virus preS/S mRNAHepatitis B virus core mRNAHepatitis B virus X mRNAHBV transcripts

Potential mechanisms include inhibition of HBV mRNA synthesis (e.g., RNA polymerase II inhibition), RNA interference/silencing of HBV transcripts, and blocking reverse transcription of HBV mRNA (inhibition of viral DNA formation). No direct, approved drugs currently utilize these approaches.