Zhao, L. ; Chen, F. ; Quitt, O. ; Festag, M. ; Ringelhan, M.* ; Wisskirchen, K. ; Festag, J. ; Yakovleva, L.* ; Sureau, C.* ; Bohne, F. ; Aichler, M. ; Bruss, V. ; Shevtsov, M.* ; van de Klundert, M. ; Momburg, F.* ; Möhl, B.S. ; Protzer, U.
Hepatitis B virus envelope proteins can serve as therapeutic targets embedded in the host cell plasma membrane.
Cell. Microbiol. 23:e13399 (2021)
Hepatitis B virus (HBV) infection is a major health threat causing 880,000 deaths each year. Available therapies control viral replication, but do not cure HBV leaving patients at risk to develop hepatocellular carcinoma. Here we show that HBV envelope proteins (HBs) - besides their integration into endosomal membranes - become embedded in the plasma membrane where they can be targeted by redirected T-cells. HBs was detected on the surface of HBV-infected cells, in livers of mice replicating HBV and in HBV-induced hepatocellular carcinoma. Staining with HBs-specific recombinant antibody MoMab recognizing a conformational epitope indicated that membrane-associated HBs remains correctly folded in HBV-replicating cells in cell culture and in livers of HBV-transgenic mice in vivo. MoMab coated onto superparamagnetic iron oxide nanoparticles allowed to detect membrane-associated HBs after HBV infection by electron microscopy in distinct stretches of the hepatocyte plasma membrane. Last not least we demonstrate that HBs located to the cell surface allows therapeutic targeting of HBV-positive cells by T-cells either engrafted with a chimeric antigen receptor or redirected by bispecific, T-cell engager antibodies. This article is protected by copyright. All rights reserved.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Antiviral Therapy ; Hbsag ; T-cell Therapy ; Envelope Proteins ; Plasma Membrane; Iron-oxide Nanoparticles; Surface-antigen; Hepatocellular-carcinoma; Transmembrane Domains; Replication; Polypeptide; Secretion; Binding; Hbsag; Identification
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Language
english
Publication Year
2021
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2021
ISSN (print) / ISBN
1462-5814
e-ISSN
1462-5822
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Volume: 23,
Issue: 12,
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Article Number: e13399
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Wiley
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111 River St, Hoboken 07030-5774, Nj Usa
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Reviewing status
Peer reviewed
POF-Topic(s)
30203 - Molecular Targets and Therapies
30205 - Bioengineering and Digital Health
Research field(s)
Immune Response and Infection
Enabling and Novel Technologies
PSP Element(s)
G-502700-003
G-500390-001
G-502700-005
Grants
Ministry of Science and Higher Education of The Russian Federation
Copyright
Erfassungsdatum
2021-12-16