< Terug naar vorige pagina
Publicatie
Multimeric ACE2-IgM fusions as broadly active antivirals that potently neutralize SARS-CoV-2 variants
Tijdschriftbijdrage - Tijdschriftartikel
Fusion of ACE2 to IgM-Fc results in hexameric ACE2-IgM-Fc proteins with potent virus neutralization efficiency of patient-isolated SARS-CoV and SARS-CoV-2 variants. 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.
Tijdschrift: COMMUNICATIONS BIOLOGY
ISSN: 2399-3642
Issue: 1
Volume: 5
Jaar van publicatie:2022
Toegankelijkheid:Open