- 现金
- 62111 元
- 精华
- 26
- 帖子
- 30437
- 注册时间
- 2009-10-5
- 最后登录
- 2022-12-28
|
Hepatitis B virus envelope proteins can serve as therapeutic targets embedded in the host cell plasma membrane
Lili Zhao # 1 , Fuwang Chen # 1 , Oliver Quitt # 1 , Marvin Festag # 1 , Marc Ringelhan 2 , Karin Wisskirchen 1 , Julia Festag 1 , Luidmila Yakovleva 3 , Camille Sureau 4 , Felix Bohne 1 , Michaela Aichler 5 , Volker Bruss 1 , Maxim Shevtsov 3 6 , Maarten van de Klundert 1 , Frank Momburg 7 , Britta S Möhl 1 8 , Ulrike Protzer 1 8
Affiliations
Affiliations
1
Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany.
2
Department of Internal Medicine II, University Hospital rechts der Isar, Technical University of Munich, Munich, Germany.
3
Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Russia.
4
Molecular Virology laboratory, Institut National de la Transfusion Sanguine, Paris, France.
5
Research Unit Analytical Pathology, Helmholtz Zentrum München, Munich, Germany.
6
Center for Translational Cancer Research, University Hospital rechts der Isar, Technical University of Munich, Munich, Germany.
7
Clinical Cooperation Unit Applied Tumor Immunity, German Cancer Research Center, Heidelberg, Germany.
8
German Center for Infection Research (DZIF), Munich partner site, Munich, Germany.
#
Contributed equally.
PMID: 34729894 DOI: 10.1111/cmi.13399
Abstract
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.
Keywords: Antiviral therapy; HBsAg; T-cell therapy; envelope proteins; plasma membrane.
This article is protected by copyright. All rights reserved. |
|