Your browser doesn't support javascript.
loading
The humanized nanobody RBD-1-2G tolerates the spike N501Y mutation to neutralize SARS-CoV-2
Ying Fu; Juliana da Fonseca Rezende e Mello; Bryan D Fleming; Alex Renn; Catherine Z. Chen; Xin Hu; Miao Xu; Kirill Gorshkov; Quinlin Hanson; Wei Zheng; Emily M Lee; Lalith Perera; Robert Petrovich; Manisha Pradhan; Richard T Eastman; Zina Itkin; Thomas Stanley; Allen Hsu; Venkata Dandey; William Gillette; Troy Taylor; Nitya Ramakrishnan; Shelley Perkins; Dominic Esposito; Eunkeu Oh; Kimihiro Susumu; Mason Wolak; Marc Ferrer; Matthew D. Hall; Mario J Borgnia; Anton Simeonov.
Afiliación
  • Ying Fu; National Center for Advancing Translational Sciences
  • Juliana da Fonseca Rezende e Mello; National Institute of Environmental Health Sciences
  • Bryan D Fleming; National Center for Advancing Translational Sciences
  • Alex Renn; National Center for Advancing Translational Sciences
  • Catherine Z. Chen; National Center for Advancing Translational Sciences
  • Xin Hu; National Center for Advancing Translational Sciences
  • Miao Xu; National Center for Advancing Translational Sciences
  • Kirill Gorshkov; National Center for Advancing Translational Sciences
  • Quinlin Hanson; National Center for Advancing Translational Sciences
  • Wei Zheng; National Center for Advancing Translational Sciences
  • Emily M Lee; National Center for Advancing Translational Sciences
  • Lalith Perera; National Institute of Environmental Health Sciences
  • Robert Petrovich; National Institute of Environmental Health Sciences
  • Manisha Pradhan; National Center for Advancing Translational Sciences
  • Richard T Eastman; National Center for Advancing Translational Sciences
  • Zina Itkin; National Center for Advancing Translational Sciences
  • Thomas Stanley; National Institute of Environmental Health Services
  • Allen Hsu; National Institute of Environmental Health Sciences
  • Venkata Dandey; National Institute of Environmental Health Sciences
  • William Gillette; Frederick National Laboratory for Cancer Research
  • Troy Taylor; Frederick National Laboratory for Cancer Research
  • Nitya Ramakrishnan; Frederick National Laboratory for Cancer Research
  • Shelley Perkins; Frederick National Laboratory for Cancer Research
  • Dominic Esposito; Frederick National Laboratory for Cancer Research
  • Eunkeu Oh; Naval Research Laboratory
  • Kimihiro Susumu; Jacobs Corporation
  • Mason Wolak; Naval Research Laboratory
  • Marc Ferrer; National Center for Advancing Translational Sciences
  • Matthew D. Hall; National Center for Advancing Translational Sciences
  • Mario J Borgnia; National Institute of Environmental Health Sciences
  • Anton Simeonov; National Center for Advancing Translational Sciences
Preprint en En | PREPRINT-BIORXIV | ID: ppbiorxiv-465476
ABSTRACT
Neutralizing antibodies targeting the SARS-CoV-2 spike protein have shown a great preventative/therapeutic potential. Here, we report a rapid and efficient strategy for the development and design of SARS-CoV-2 neutralizing humanized nanobody constructs with sub-nanomolar affinities and nanomolar potencies. CryoEM-based structural analysis of the nanobodies in complex with spike revealed two distinct binding modes. The most potent nanobody, RBD-1-2G(NCATS-BL8125), tolerates the N501Y RBD mutation and remains capable of neutralizing the B.1.1.7 (Alpha) variant. Molecular dynamics simulations provide a structural basis for understanding the neutralization process of nanobodies exclusively focused on the spike-ACE2 interface with and without the N501Y mutation on RBD. A primary human airway air-lung interface (ALI) ex vivo model showed that RBD-1-2G-Fc antibody treatment was effective at reducing viral burden following WA1 and B.1.1.7 SARS-CoV-2 infections. Therefore, this presented strategy will serve as a tool to mitigate the threat of emerging SARS-CoV-2 variants.
Licencia
cc_no
Texto completo: 1 Colección: 09-preprints Base de datos: PREPRINT-BIORXIV Idioma: En Año: 2021 Tipo del documento: Preprint
Texto completo: 1 Colección: 09-preprints Base de datos: PREPRINT-BIORXIV Idioma: En Año: 2021 Tipo del documento: Preprint