Clinical Report: Detailed Chromatin Conformation Mapping in HBeAg-Exposed Macrophages

Overview

This study reveals that HBeAg induces significant 3D chromatin reorganization in macrophages, leading to altered gene expression associated with HBV-related liver disease. Key findings include the activation of pro-inflammatory pathways and epigenetic changes that drive macrophage dysfunction.

Background

Hepatitis B virus (HBV) infection is a major global health issue, affecting approximately 2 billion individuals, with over 350 million chronic carriers. Understanding the mechanisms of macrophage activation by HBV antigens, particularly HBeAg, is crucial for elucidating the pathogenesis of liver diseases such as cirrhosis and hepatocellular carcinoma.

Data Highlights

No numerical data or trial data were provided in the source material.

Key Findings

• HBeAg activates pro-inflammatory transcriptional programs, notably the TNF signaling pathway.
• Hi-C analysis shows global 3D chromatin reorganization in macrophages upon HBeAg stimulation.
• Inactive-to-active compartment switching and enhancer accumulation drive upregulation of genes like MET and FHOD3.
• Topologically associating domain (TAD) restructuring exposes new regulatory elements, enhancing FLNB and SESN2 expression.
• Disruption of specific intrachromosomal loops leads to downregulation of genes such as KBTBD11 and BLVRB.
• Epigenetic reprogramming, including H3K27ac deposition, is mediated by factors such as AP-1 and STAT motifs.

Clinical Implications

The findings provide insights into the structural variants and core genes identified in the study.

Conclusion

HBeAg induces a complex reorganization of the 3D genome in macrophages, contributing to their dysfunction in the context of HBV infection.

Related Resources & Content

1. Frontiers in Immunology, 2026 -- Identification of characteristic hub genes in the immune-active phase of chronic hepatitis B
2. Journal of Gastroenterology, 2020 -- Outstanding Challenges in Immune Tolerance Related to Chronic Hepatitis B Infection
3. Journal of Gastroenterology, 2021 -- CCL19 Promotes CD8+ T-Cell Activity and Facilitates Hepatitis B Virus Clearance
4. Journal of Gastroenterology, 2012 -- Evaluating the Role of Quantitative HBsAg in the Progression and Nucleos(t)ide Analogue Therapy of Chronic Hepatitis B
5. NCBI Bookshelf -- Summary of recommendations - Guidelines for the prevention, diagnosis, care and treatment for people with chronic hepatitis B infection
6. EASL Clinical Practice Guidelines, 2025 -- EASL Clinical Practice Guidelines on the management of hepatitis B virus infection
7. Summary of recommendations - Guidelines for the prevention, diagnosis, care and treatment for people with chronic hepatitis B infection - NCBI Bookshelf
8. EASL Clinical Practice Guidelines on the management of hepatitis B virus infection
9. https://www.annualreviews.org/content/journals/10.1146/annurev-pathmechdis-042524-030646?crawler=true&mimetype=application%2Fpdf