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Multiformin-Type Azaphilones Prevent SARS-CoV-2 Binding to ACE2 Receptor

authored by
Linda Jansen-Olliges, Shambhabi Chatterjee, Lili Jia, Frank Stahl, Christian Bär, Marc Stadler, Frank Surup, Carsten Zeilinger
Abstract

Protein microarray screenings identified fungal natural products from the azaphilone family as potent inhibitors of SARS-CoV-2 spike protein binding to host ACE2 receptors. Cohaerin F, as the most potent substance from the cohaerin group, led to more than 50% less binding of ACE2 and SARS-CoV-2 spike protein. A survey for structurally related azaphilones yielded the structure elucidation of six new multiformins E–J (10–15) and the revision of the stereochemistry of the multiformins. Cohaerin and multiformin azaphilones (1–5, 8, 12) were assessed for their activity in a cell-based infection assay. Calu-3 cells expressing human ACE2 receptor showed more than 75% and 50% less infection by SARS-CoV-2 pseudotyped lentivirus particles after treatment with cohaerin C (1) and cohaerin F (4), respectively. Multiformin C (8) and G (12) that nearly abolished the infection of cells. Our data show that multiformin-type azaphilones prevent the binding of SARS-CoV-2 to the cell entry receptor ACE2.

Organisation(s)
Institute of Organic Chemistry
Institute of Technical Chemistry
Centre of Biomolecular Drug Research (BMWZ)
Department of Cell Physiology and Biophysics
External Organisation(s)
Hannover Medical School (MHH)
Huazhong Agricultural University
Helmholtz Centre for Infection Research (HZI)
Technische Universität Braunschweig
Type
Article
Journal
Cells
Volume
12
No. of pages
13
ISSN
2073-4409
Publication date
25.12.2022
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
General Biochemistry,Genetics and Molecular Biology
Electronic version(s)
(Access: Open)