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VE607 Stabilizes SARS-CoV-2 Spike In the "RBD-up" Conformation and Inhibits Viral Entry
Preprint   Open access

VE607 Stabilizes SARS-CoV-2 Spike In the "RBD-up" Conformation and Inhibits Viral Entry

Shilei Ding, Shang Yu Gong, Jonathan Grover, Mohammadjavad Mohammadi, Yaozong Chen, Dani Vezina, Guillaume Beaudoin-Bussieres, Vijay Tailor Verma, Guillaume Goyette, Jonathan Richard, …
bioRxiv
22 Feb 2022
PMID: 35233570
url
https://doi.org/10.1101/2022.02.03.479007View
Preprint (Author's original)Open Access (License Unspecified) Open

Abstract

ACE2 Angiotensin-converting enzyme 2 Binding sites Conformation COVID-19 Drug development Severe acute respiratory syndrome coronavirus 2 Spike glycoprotein Stereoisomers
SARS-CoV-2 infection of host cells starts by binding of the Spike glycoprotein (S) to the ACE2 receptor. The S-ACE2 interaction is a potential target for therapies against COVID-19 as demonstrated by the development of immunotherapies blocking this interaction. Here, we present the commercially available VE607, comprised of three stereoisomers, that was originally described as an inhibitor of SARS-CoV-1. We show that VE607 specifically inhibits infection of SARS-CoV-1 and SARS-CoV-2 S-expressing pseudoviral particles as well as authentic SARS-CoV-2. VE607 stabilizes the receptor binding domain (RBD) in its 'up' conformation. In silico docking and mutational analysis map the VE607 binding site at the RBD-ACE2 interface. The IC50 values are in the low micromolar range for pseudoparticles derived from SARS-CoV-2 Wuhan/D614G as well as from variants of concern (Alpha, Beta, Gamma, Delta and Omicron), suggesting that VE607 has potential for the development of drugs against SARS-CoV-2 infections. Competing Interest Statement The authors have declared no competing interest.

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