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Author Spotlight: Advancements and Challenges in Hepatitis B Virus Detection
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Author Spotlight: Advancements and Challenges in Hepatitis B Virus Detection

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Hepatitis B virus DNA methylation and its potential role in chronic hepatitis B

Wei Feng Low1, Yun Fong Ngeow2, Jack Bee Chook3

  • 1Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Jalan Universiti, Bandar Sunway, 47500 Petaling Jaya, Selangor, Malaysia.

Expert Reviews in Molecular Medicine
|November 16, 2022
PubMed

Insights

Hepatitis B virus (HBV) DNA methylation, particularly in covalently closed circular DNA (cccDNA), is more common in liver cancer (HCC). This methylation may aid in early HCC diagnosis and understanding disease progression.

Area of Science:

  • Hepatology
  • Virology
  • Molecular Biology

Background:

  • Hepatitis B virus (HBV) infection caused 66% of global liver deaths in 2015.
  • Chronic hepatitis B (CHB)-associated hepatocellular carcinoma (HCC) accounts for 37% of these deaths.
  • Early HCC detection is challenging but crucial for patient survival.

Purpose of the Study:

  • To review current findings on HBV DNA methylation.
  • To explore the role of HBV DNA methylation in HCC diagnosis.
  • To understand how HBV cccDNA methylation influences viral replication and pathogenesis.

Main Methods:

  • Review of current scientific literature on HBV DNA methylation.
  • Analysis of methylation patterns in HBV DNA, including cccDNA.
  • Examination of CpG island methylation sites within the HBV genome.

Main Results:

  • HBV DNA methylation, especially of cccDNA, is more prevalent in HCC cases compared to CHB and cirrhosis.
  • Three specific CpG islands in the HBV genome are frequent sites of methylation.
  • HBV cccDNA methylation impacts viral replication and protein expression.

Conclusions:

  • HBV DNA methylation patterns, particularly in cccDNA, show potential as biomarkers for HCC diagnosis.
  • Understanding HBV methylation mechanisms offers insights into HCC pathogenesis.
  • Further research into HBV DNA methylation could improve early detection strategies for liver cancer.

Keywords:
BiomarkerCpG islandschronic hepatitis Bcovalently closed circular DNAhepatitis B virushepatocellular carcinomamethylation

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