OpcA and PorB are novel bactericidal antigens of the 4CMenB vaccine in mice and humans.


Journal

NPJ vaccines
ISSN: 2059-0105
Titre abrégé: NPJ Vaccines
Pays: England
ID NLM: 101699863

Informations de publication

Date de publication:
12 Apr 2023
Historique:
received: 04 11 2022
accepted: 23 03 2023
medline: 13 4 2023
entrez: 12 4 2023
pubmed: 13 4 2023
Statut: epublish

Résumé

The ability of Neisseria meningitidis Outer Membrane Vesicles (OMV) to induce protective responses in humans is well established and mainly attributed to Porin A (PorA). However, the contribution of additional protein antigens to protection remains to be elucidated. In this study we dissected the immunogenicity of antigens originating from the OMV component of the 4CMenB vaccine in mice and humans. We collected functional data on a panel of strains for which bactericidal responses to 4CMenB in infants was attributable to the OMV component and evaluated the role of 30 OMV-specific protein antigens in cross-coverage. By using tailor-made protein microarrays, the immunosignature of OMV antigens was determined. Three of these proteins, OpcA, NspA, and PorB, triggered mouse antibodies that were bactericidal against several N. meningitidis strains. Finally, by genetic deletion and/or serum depletion studies, we demonstrated the ability of OpcA and PorB to induce functional immune responses in infant sera after vaccination. In conclusion, while confirming the role of PorA in eliciting protective immunity, we identified two OMV antigens playing a key role in protection of infants vaccinated with the 4CMenB vaccine against different N. meningitidis serogroup B strains.

Identifiants

pubmed: 37045859
doi: 10.1038/s41541-023-00651-9
pii: 10.1038/s41541-023-00651-9
pmc: PMC10097807
doi:

Types de publication

Journal Article

Langues

eng

Pagination

54

Informations de copyright

© 2023. The Author(s).

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Auteurs

Viola Viviani (V)

GSK, Siena, Italy.
Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy.

Adele Fantoni (A)

GSK, Siena, Italy.

Sara Marchi (S)

GSK, Siena, Italy.

Enrico Luzzi (E)

GSK, Siena, Italy.

Alessandro Muzzi (A)

GSK, Siena, Italy.

Marzia M Giuliani (MM)

GSK, Siena, Italy.

Domenico Maione (D)

GSK, Siena, Italy.

Jeremy P Derrick (JP)

Lydia Becker Institute of Immunology and Inflammation, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, M13 9PL, UK.

Isabel Delany (I)

GSK, Siena, Italy.

Mariagrazia Pizza (M)

GSK, Siena, Italy.

Alessia Biolchi (A)

GSK, Siena, Italy.

Erika Bartolini (E)

GSK, Siena, Italy. erika.x.bartolini@gsk.com.

Classifications MeSH