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Jocher, Georg; Grass, Vincent; Tschirner, Sarah K.; Riepler, Lydia; Breimann, Stephan; Kaya, Tugberk; Oelsner, Madlen; Hamad, M. Sabri; Hofmann, Laura I.; Blobel, Carl P.; Schmidt-Weber, Carsten B.; Gökce, Özgün; Jakwerth, Constanze A.; Trimpert, Jakob; Kimpel, Janine; Pichlmair, Andreas und Lichtenthaler, Stefan F. (2022): ADAM10 and ADAM17 promote SARS-CoV-2 cell entry and spike protein-mediated lung cell fusion. In: EMBO Reports, Bd. 23, Nr. 6, e54305 [PDF, 2MB]

Abstract

The severe-acute-respiratory-syndrome-coronavirus-2 (SARS-CoV-2) is the causative agent of COVID-19, but host cell factors contributing to COVID-19 pathogenesis remain only partly understood. We identify the host metalloprotease ADAM17 as a facilitator of SARS-CoV-2 cell entry and the metalloprotease ADAM10 as a host factor required for lung cell syncytia formation, a hallmark of COVID-19 pathology. ADAM10 and ADAM17, which are broadly expressed in the human lung, cleave the SARS-CoV-2 spike protein (S) in vitro, indicating that ADAM10 and ADAM17 contribute to the priming of S, an essential step for viral entry and cell fusion. ADAM protease-targeted inhibitors severely impair lung cell infection by the SARS-CoV-2 variants of concern alpha, beta, delta, and omicron and also reduce SARS-CoV-2 infection of primary human lung cells in a TMPRSS2 protease-independent manner. Our study establishes ADAM10 and ADAM17 as host cell factors for viral entry and syncytia formation and defines both proteases as potential targets for antiviral drug development.

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