Tissue-resident memory CD8+T cells might enhance HBV DNA clearance in CHB patients with MASLD complication and normal

Chao Cai1, Wen-Xuan Shang1, Si-Jie Zheng1

  • 1Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.

Insights

Metabolic dysfunction-associated steatotic liver disease (MASLD) aids hepatitis B virus (HBV) DNA clearance in chronic hepatitis B (CHB) patients with normal ALT. MASLD enhances immune cell activity, promoting viral clearance.

Area of Science:

  • Hepatology
  • Immunology
  • Virology

Background:

  • Hepatitis B virus (HBV) infection remains a global health concern, especially in patients with normal alanine aminotransferase (ALT) levels.
  • Metabolic dysfunction-associated steatotic liver disease (MASLD) is increasingly prevalent in chronic hepatitis B (CHB) patients, complicating management.
  • This study examines the impact of MASLD on HBV DNA clearance in CHB patients with normal ALT.

Purpose of the Study:

  • To investigate the relationship between MASLD and HBV DNA clearance in CHB patients with normal ALT.
  • To explore the immunological mechanisms underlying HBV DNA clearance in the presence of MASLD.

Main Methods:

  • Retrospective analysis of 403 CHB patients with normal ALT who received antiviral therapy.
  • Diagnosis of MASLD based on liver biopsy findings.
  • Single-cell data analysis of relevant datasets (GSE192740, GSE182159).

Main Results:

  • CHB patients with MASLD demonstrated a higher likelihood of achieving HBV DNA clearance.
  • Increased proportion of CD8+Teff-GZMH cells and enhanced interactions among CD8+ Trm-CD69 cells were observed in the MASLD group.
  • Elevated Monocyte-THBS1 proportion and activated CCL-CCR pathways were noted in patients with MASLD.

Conclusions:

  • Monocyte-THBS1 cells may activate CD8+ Trm-CD69 T cells, enhancing immune response via the CCL-CCR signaling axis.
  • This immune activation facilitates immune cell recruitment and improves hepatitis B virus (HBV) clearance.
  • MASLD may play a beneficial role in managing CHB by promoting viral clearance through immune modulation.
Abstract

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