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Updated: Jan 30, 2026

Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice
07:25

Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice

Published on: September 25, 2019

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Poly I:C-based rHBVvac therapeutic vaccine eliminates HBV via generation of HBV-specific CD8+ effector memory T cells

Hua-Jun Zhao1, Qiu-Ju Han1, Guan Wang1

  • 1Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China.

Gut
|January 13, 2019
PubMed

Insights

A new therapeutic vaccine (pHBV-vaccine) effectively reduced hepatitis B virus (HBV) DNA and antigens in mice. This vaccine restores T cell function and may offer a potential cure for chronic hepatitis B (CHB).

Area of Science:

  • Immunology
  • Virology
  • Vaccinology

Background:

  • Chronic hepatitis B (CHB) is a significant global health issue with limited curative treatments.
  • Developing effective therapeutic vaccines remains a critical challenge in managing CHB.

Purpose of the Study:

  • To evaluate the feasibility and efficacy of a poly I:C-adjuvanted therapeutic HBV vaccine (pHBV-vaccine) in a mouse model of CHB.
  • To investigate the immunological mechanisms underlying the vaccine's therapeutic effects.

Main Methods:

  • HBV-carrier mice were treated with the pHBV-vaccine.
  • Assessed viral markers (HBsAg, HBV DNA), dendritic cell maturation, T cell responses (CD8+ T cell exhaustion, proliferation, polyfunctionality), and cytokine profiles (IL-12).

Main Results:

  • The pHBV-vaccine significantly reduced HBsAg and HBV DNA levels safely.
  • It promoted dendritic cell maturation and antigen presentation, restored exhausted CD8+ T cells, and broke immune tolerance.
  • The vaccine enhanced HBV-specific T cell proliferation and polyfunctionality, inducing effector memory short-lived effector cells (SLECs) crucial for viral clearance.

Conclusions:

  • The pHBV-vaccine demonstrates significant therapeutic potential for CHB by restoring anti-HBV immunity.
  • This study provides a foundation for developing pHBV-vaccine as a clinical candidate for CHB therapy.
Abstract

Keywords:
T lymphocytesadjuvant treatmentantiviral therapyhepatitis Bimmunology in hepatology

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