PreprintCited by 19Animal Virus Infections StudiesSARS-CoV-2 and COVID-19 Researchvaccines and immunoinformatics approaches

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Neutralizing Antibodies Reveal Cryptic Vulnerabilities and Interdomain Crosstalk in the Porcine Deltacoronavirus Spike

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Bosch, Berend-Jan, Du, Wenjuan, Debski-Antoniak, Oliver, Drabek, Dubravka, Haperen, Rien van, Dortmondt, Melissa van, Lee, Joline van der, Drulyte, Ieva, Kuppeveld, Frank van, Grosveld, Frank, Hurdiss, Daniel·2024·Nature Communications

Preprint — published as 10.1038/s41467-024-49693-0 · Paper page

Abstract

Porcine deltacoronavirus (PDCoV) is an emerging enteric pathogen in pigs that has recently been detected in humans. Despite this zoonotic concern, the antigenic structure of PDCoV remains unknown. The virus relies on its spike (S) protein for cell entry, making it a prime target for neutralizing antibodies. Here we generated and characterized a set of neutralizing antibodies targeting the S protein, shedding light on PDCoV S interdomain crosstalk and its vulnerable sites. Among the four identified antibodies, one targets the S1A domain, causing local and long-range conformational changes, resulting in partial exposure of the S1B domain. The other antibodies bind the S1B domain, disrupting binding to the APN receptor. Notably, the epitopes of these S1B-targeting antibodies are concealed in the prefusion S trimer conformation, highlighting the necessity for conformational changes for effective antibody binding. The binding footprint of one S1B binder entirely overlaps with APN-interacting residues and thus targets a highly conserved epitope. These findings provide critical structural insights into the humoral immune response against the PDCoV S protein, potentially guiding vaccine and therapeutic development for this zoonotic pathogen.

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Metadata

Authors
Bosch, B.-J., Du, W., Debski-Antoniak, O., Drabek, D., Haperen, R. V., Dortmondt, M. V., Lee, J. V. D., Drulyte, I., Kuppeveld, F. V., Grosveld, F., & Hurdiss, D.
Affiliations
  • Utrecht University (NL)
  • Erasmus MC (NL)
  • ErasmusMC
  • Utrecht university
  • Thermo Fisher Scientific (Netherlands) (NL)
  • Utrecht University
Corresponding author
  • Bosch, Berend-Jan
  • Hurdiss, Daniel
Venue
Nature Communications
Published
2024-01-09
Volume
15
Issue
1
Pages
5330-5330
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4399914567
Cited by
19
References
1
Citations by year
2026: 11 · 2025: 7 · 2024: 1
FWCI
5.19
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (publishedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
Funders
  • Bill and Melinda Gates Foundation
  • University of Dundee
  • European Federation of Pharmaceutical Industries and Associations
  • European Commission (101005077, HORIZON2020)
  • Innovative Medicines Initiative (101005077)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › vaccines and immunoinformatics approaches
Keywords
porcine deltacoronavirus, spike protein, neutralizing antibodies, CD13, receptor binding, epitope mapping, zoonotic coronaviruses, humoral immune response
MeSH terms
Protein Domains, Deltacoronavirus, Animals, Antibodies, Viral, Epitopes, Humans, Protein Binding, Swine, Swine Diseases, Coronavirus Infections, CD13 Antigens, Antibodies, Neutralizing, HEK293 Cells, Spike Glycoprotein, Coronavirus

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