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TitleA nanobody recognizes a unique conserved epitope and potently neutralizes SARS-CoV-2 omicron variants.
Journal, issue, pagesiScience, Vol. 26, Issue 7, Page 107085, Year 2023
Publish dateJul 21, 2023
AuthorsNaphak Modhiran / Simon Malte Lauer / Alberto A Amarilla / Peter Hewins / Sara Irene Lopes van den Broek / Yu Shang Low / Nazia Thakur / Benjamin Liang / Guillermo Valenzuela Nieto / James Jung / Devina Paramitha / Ariel Isaacs / Julian D J Sng / David Song / Jesper Tranekjær Jørgensen / Yorka Cheuquemilla / Jörg Bürger / Ida Vang Andersen / Johanna Himelreichs / Ronald Jara / Ronan MacLoughlin / Zaray Miranda-Chacon / Pedro Chana-Cuevas / Vasko Kramer / Christian Spahn / Thorsten Mielke / Alexander A Khromykh / Trent Munro / Martina L Jones / Paul R Young / Keith Chappell / Dalan Bailey / Andreas Kjaer / Matthias Manfred Herth / Kellie Ann Jurado / David Schwefel / Alejandro Rojas-Fernandez / Daniel Watterson /
PubMed AbstractThe severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) Omicron variant sub-lineages spread rapidly worldwide, mostly due to their immune-evasive properties. This has put a significant part ...The severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) Omicron variant sub-lineages spread rapidly worldwide, mostly due to their immune-evasive properties. This has put a significant part of the population at risk for severe disease and underscores the need for effective anti-SARS-CoV-2 agents against emergent strains in vulnerable patients. Camelid nanobodies are attractive therapeutic candidates due to their high stability, ease of large-scale production, and potential for delivery via inhalation. Here, we characterize the receptor binding domain (RBD)-specific nanobody W25 and show superior neutralization activity toward Omicron sub-lineages in comparison to all other SARS-CoV2 variants. Structure analysis of W25 in complex with the SARS-CoV2 spike glycoprotein shows that W25 engages an RBD epitope not covered by any of the antibodies previously approved for emergency use. evaluation of W25 prophylactic and therapeutic treatments across multiple SARS-CoV-2 variant infection models, together with W25 biodistribution analysis in mice, demonstrates favorable pre-clinical properties. Together, these data endorse W25 for further clinical development.
External linksiScience / PubMed:37361875 / PubMed Central
MethodsEM (single particle)
Resolution5.92 - 6.04 Å
Structure data

16010

8bev

EMDB-16010, PDB-8bev:
Cryo-EM structure of SARS-CoV-2 spike (HexaPro variant) in complex with nanobody W25 (map 3, focus refinement on RBD, W25 and adjacent NTD)
Method: EM (single particle) / Resolution: 5.92 Å

16030

8bgg

EMDB-16030, PDB-8bgg:
Cryo-EM structure of SARS-CoV-2 spike (Omicron BA.1 variant) in complex with nanobody W25 (map 5, focus refinement on RBD, W25 and adjacent NTD)
Method: EM (single particle) / Resolution: 6.04 Å

Chemicals

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

Source
  • severe acute respiratory syndrome coronavirus 2
  • vicugna pacos (alpaca)
KeywordsVIRAL PROTEIN / SARS-CoV-2 / spike / S protein / HexaPro / nanobody / Omicron / BA.1 / W25

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