A broad-spectrum macrocyclic peptide inhibitor of the SARS-CoV-2 spike protein

Vito Thijssen, Daniel L Hurdiss, Oliver J Debski-Antoniak, Matthew A Spence, Charlotte Franck, Alexander Norman, Anupriya Aggarwal, Nadia J Mokiem, David A A van Dongen, Stein W Vermeir, Minglong Liu, Wentao Li, Marianthi Chatziandreou, Tim Donselaar, Wenjuan Du, Ieva Drulyte, Berend-Jan Bosch, Joost Snijder, Stuart G Turville, Richard J PayneColin J Jackson, Frank J M van Kuppeveld*, Seino A K Jongkees*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The ongoing COVID-19 pandemic has had great societal and health consequences. Despite the availability of vaccines, infection rates remain high due to immune evasive Omicron sublineages. Broad-spectrum antivirals are needed to safeguard against emerging variants and future pandemics. We used messenger RNA (mRNA) display under a reprogrammed genetic code to find a spike-targeting macrocyclic peptide that inhibits SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) Wuhan strain infection and pseudoviruses containing spike proteins of SARS-CoV-2 variants or related sarbecoviruses. Structural and bioinformatic analyses reveal a conserved binding pocket between the receptor-binding domain, N-terminal domain, and S2 region, distal to the angiotensin-converting enzyme 2 receptor-interaction site. Our data reveal a hitherto unexplored site of vulnerability in sarbecoviruses that peptides and potentially other drug-like molecules can target.

Original languageEnglish
Article numbere2303292120
Number of pages7
JournalProceedings of the National Academy of Sciences of the United States of America
Volume120
Issue number26
DOIs
Publication statusPublished - 27 Jun 2023

Keywords

  • Cryo-EM
  • SARS-CoV-2
  • antivirals
  • mRNA display
  • macrocyclic peptides

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