Spanish Ministry of Science, Innovation, and Universities
PID2020 116880GB-I00
Spain
Spanish Ministry of Science, Innovation, and Universities
PID2020 120322RB-C21
Spain
Spanish National Research Council
202080E110
Spain
Citation
Journal: J Med Chem / Year: 2023 Title: C-2 Thiophenyl Tryptophan Trimers Inhibit Cellular Entry of SARS-CoV-2 through Interaction with the Viral Spike (S) Protein. Authors: Marta Gargantilla / Clara Francés / Anmol Adhav / Alicia Forcada-Nadal / Belén Martínez-Gualda / Olaia Martí-Marí / María Luisa López-Redondo / Roberto Melero / Clara Marco-Marín / ...Authors: Marta Gargantilla / Clara Francés / Anmol Adhav / Alicia Forcada-Nadal / Belén Martínez-Gualda / Olaia Martí-Marí / María Luisa López-Redondo / Roberto Melero / Clara Marco-Marín / Nadine Gougeard / Carolina Espinosa / Antonio Rubio-Del-Campo / Rafael Ruiz-Partida / María Del Pilar Hernández-Sierra / Laura Villamayor-Belinchón / Jerónimo Bravo / José-Luis Llacer / Alberto Marina / Vicente Rubio / Ana San-Félix / Ron Geller / María-Jesús Pérez-Pérez / Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes COVID-19, by infecting cells via the interaction of its spike protein (S) with the primary cell receptor angiotensin-converting ...Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes COVID-19, by infecting cells via the interaction of its spike protein (S) with the primary cell receptor angiotensin-converting enzyme (ACE2). To search for inhibitors of this key step in viral infection, we screened an in-house library of multivalent tryptophan derivatives. Using VSV-S pseudoparticles, we identified compound as a potent entry inhibitor lacking cellular toxicity. Chemical optimization of rendered compounds and , which also potently inhibited genuine SARS-CoV-2 cell entry. Thermofluor and microscale thermophoresis studies revealed their binding to S and to its isolated receptor binding domain (RBD), interfering with the interaction with ACE2. High-resolution cryoelectron microscopy structure of S, free or bound to , shed light on cell entry inhibition mechanisms by these compounds. Overall, this work identifies and characterizes a new class of SARS-CoV-2 entry inhibitors with clear potential for preventing and/or fighting COVID-19.
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