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Svilenov, H.L.* ; Bester, R. ; Sacherl, J. ; Absmeier, R.* ; Peters, C.* ; Protzer, U. ; Brockmeyer, C.* ; Buchner, J.*

Multimeric ACE2-IgM fusions as broadly active antivirals that potently neutralize SARS-CoV-2 variants.

Comm. Biol. 5:1237 (2022)
Publ. Version/Full Text Research data DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Coronavirus infections are a world-wide threat to human health. A promising strategy to develop a broadly active antiviral is the use of fusion proteins consisting of an antibody IgG Fc region and a human ACE2 domain to which the viral spike proteins bind. Here we create antiviral fusion proteins based on IgM scaffolds. The hexameric ACE2-IgM-Fc fusions can be efficiently produced in mammalian cells and they neutralize the infectious virus with picomolar affinity thus surpassing monomeric ACE2-IgM-Fc by up to 96-fold in potency. In addition, the ACE2-IgM fusion shows increased neutralization efficiency for the highly infectious SARS-CoV-2 omicron variant in comparison to prototypic SARS-CoV-2. Taken together, these multimeric IgM fusions proteins are a powerful weapon to fight coronavirus infections.
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Publication type Article: Journal article
Document type Scientific Article
Language english
Publication Year 2022
HGF-reported in Year 2022
ISSN (print) / ISBN 2399-3642
e-ISSN 2399-3642
Quellenangaben Volume: 5, Issue: 1, Pages: , Article Number: 1237 Supplement: ,
Publisher Springer
Publishing Place London
Reviewing status Peer reviewed
POF-Topic(s) 30203 - Molecular Targets and Therapies
Research field(s) Immune Response and Infection
PSP Element(s) G-502700-003
Grants Projekt DEAL
Scopus ID 85141686192
PubMed ID 36371561
Erfassungsdatum 2022-12-06