Author: Kreye, Jakob; Reincke, S. Momsen; Kornau, Hans-Christian; Sánchez-Sendin, Elisa; Corman, Victor Max; Liu, Hejun; Yuan, Meng; Wu, Nicholas C.; Zhu, Xueyong; Lee, Chang-Chun D.; Trimpert, Jakob; Höltje, Markus; Dietert, Kristina; Stöffler, Laura; von Wardenburg, Niels; van Hoof, Scott; Homeyer, Marie A.; Hoffmann, Julius; Abdelgawad, Azza; Gruber, Achim D.; Bertzbach, Luca D.; Vladimirova, Daria; Li, Lucie Y.; Barthel, Paula Charlotte; Skriner, Karl; Hocke, Andreas C.; Hippenstiel, Stefan; Witzenrath, Martin; Suttorp, Norbert; Kurth, Florian; Franke, Christiana; Endres, Matthias; Schmitz, Dietmar; Jeworowski, Lara Maria; Richter, Anja; Schmidt, Marie Luisa; Schwarz, Tatjana; Müller, Marcel Alexander; Drosten, Christian; Wendisch, Daniel; Sander, Leif E.; Osterrieder, Nikolaus; Wilson, Ian A.; Prüss, Harald
Title: A therapeutic non-self-reactive SARS-CoV-2 antibody protects from lung pathology in a COVID-19 hamster model Cord-id: khzalpon Document date: 2020_9_23
ID: khzalpon
Snippet: The emergence of SARS-CoV-2 led to pandemic spread of coronavirus disease 2019 (COVID-19), manifesting with respiratory symptoms and multi-organ dysfunction. Detailed characterization of virus-neutralizing antibodies and target epitopes is needed to understand COVID-19 pathophysiology and guide immunization strategies. Among 598 human monoclonal antibodies (mAbs) from ten COVID-19 patients, we identified 40 strongly neutralizing mAbs. The most potent mAb CV07-209 neutralized authentic SARS-CoV-2
Document: The emergence of SARS-CoV-2 led to pandemic spread of coronavirus disease 2019 (COVID-19), manifesting with respiratory symptoms and multi-organ dysfunction. Detailed characterization of virus-neutralizing antibodies and target epitopes is needed to understand COVID-19 pathophysiology and guide immunization strategies. Among 598 human monoclonal antibodies (mAbs) from ten COVID-19 patients, we identified 40 strongly neutralizing mAbs. The most potent mAb CV07-209 neutralized authentic SARS-CoV-2 with IC50 of 3.1 ng/ml. Crystal structures of two mAbs in complex with the SARS-CoV-2 receptor-binding domain at 2.55 and 2.70 Ã… revealed a direct block of ACE2 attachment. Interestingly, some of the near-germline SARS-CoV-2 neutralizing mAbs reacted with mammalian self-antigens. Prophylactic and therapeutic application of CV07-209 protected hamsters from SARS-CoV-2 infection, weight loss and lung pathology. Our results show that non-self-reactive virus-neutralizing mAbs elicited during SARS-CoV-2 infection are a promising therapeutic strategy.
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