Hepatitis B Virus (HBV)-specific Cytotoxic T-cell (CTL) Response in Humans: Characterization of HLA Class II-restricted CTLs That Recognize Endogenously Synthesized HBV Envelope Antigens
Overview
Authors
Affiliations
In this study, we show that CD4+, hepatitis B virus (HBV) envelope-specific T-cell clones produced by stimulation with a particulate antigen preparation are able to recognize and kill not only autologous antigen-presenting cells incubated with exogenous HBV envelope antigens but also autologous HLA class II-positive cells expressing endogenously synthesized HBV envelope antigens following infection with recombinant vaccinia viruses or transfection with recombinant Epstein-Barr virus expression vectors. Experiments with lysosomotropic agents and brefeldin A suggest that the endosomal compartment is likely involved in the processing of endogenously synthesized viral proteins for recognition by CD4+ T cells. Our study indicates that HBV envelope-specific, HLA class II-restricted CD4+ cytotoxic T lymphocytes can potentially participate in the immune clearance of HBV-infected cells and the pathogenesis of hepatocellular injury in hepatitis B.
Stary V, Pandey R, Strobl J, Kleissl L, Starlinger P, Pereyra D Sci Immunol. 2020; 5(52).
PMID: 33067380 PMC: 7615005. DOI: 10.1126/sciimmunol.aba6232.
Aguilar J, Y L Euroasian J Hepatogastroenterol. 2018; 4(2):92-97.
PMID: 29699355 PMC: 5913903. DOI: 10.5005/jp-journals-10018-1109.
Infectious myocarditis: the role of the cardiac vasculature.
Woudstra L, Juffermans L, van Rossum A, Niessen H, Krijnen P Heart Fail Rev. 2018; 23(4):583-595.
PMID: 29536322 PMC: 6010496. DOI: 10.1007/s10741-018-9688-x.
Tian C, Hromatka B, Kiefer A, Eriksson N, Noble S, Tung J Nat Commun. 2017; 8(1):599.
PMID: 28928442 PMC: 5605711. DOI: 10.1038/s41467-017-00257-5.
Targeted DNA mutagenesis for the cure of chronic viral infections.
Schiffer J, Aubert M, Weber N, Mintzer E, Stone D, Jerome K J Virol. 2012; 86(17):8920-36.
PMID: 22718830 PMC: 3416169. DOI: 10.1128/JVI.00052-12.