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Published in: BMC Medicine 1/2022

Open Access 01-12-2022 | Vaccination | Research article

Single-dose SARS-CoV-2 vaccinations with either BNT162b2 or AZD1222 induce disparate Th1 responses and IgA production

Authors: Michael Müller, Johann Volzke, Behnam Subin, Silke Müller, Martina Sombetzki, Emil C. Reisinger, Brigitte Müller-Hilke

Published in: BMC Medicine | Issue 1/2022

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Abstract

Background

While vaccination programs against the severe acute respiratory syndrome virus 2 (SARS-CoV-2) are globally ongoing, disparate strategies for the deployment of spike antigen show varying effectiveness.

Methods

In order to explore this phenomenon, we sought to compare the early immune responses against AZD1222 and BNT162b2. SARS-CoV-2 seronegative participants received a single dose of either vaccine and were analyzed for immune cell, effector T cell, and antibody dynamics.

Results

AZD1222 induced transient leukopenia and major changes among innate and adaptive subpopulations. Both vaccines induced spike protein-specific effector T cells which were dominated by type 1 helper T cell responses following AZD1222 vaccination. A significant reduction of anti-inflammatory T cells upon re-stimulation was also restricted to AZD1222 vaccinees. While IgM and IgG were the dominant isotypes elicited by AZD1222, BNT162b2 led to a significant production of IgG and IgA.

Conclusions

Our results suggest that the strategy for spike protein delivery impacts on how and to what extent immune priming against the main SARS-CoV-2 antigen proceeds.
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Literature
42.
go back to reference Afkhami S, D’Agostino MR, Zhang A, Stacey HD, Marzok A, Kang A, et al. Single-dose respiratory mucosal delivery of next-generation viral-vectored COVID-19 vaccine provides robust protection against both ancestral and variant strains of SARS-CoV-2. bioRxiv. 2021:452721. https://doi.org/10.1101/2021.07.16.452721. Afkhami S, D’Agostino MR, Zhang A, Stacey HD, Marzok A, Kang A, et al. Single-dose respiratory mucosal delivery of next-generation viral-vectored COVID-19 vaccine provides robust protection against both ancestral and variant strains of SARS-CoV-2. bioRxiv. 2021:452721. https://​doi.​org/​10.​1101/​2021.​07.​16.​452721.
Metadata
Title
Single-dose SARS-CoV-2 vaccinations with either BNT162b2 or AZD1222 induce disparate Th1 responses and IgA production
Authors
Michael Müller
Johann Volzke
Behnam Subin
Silke Müller
Martina Sombetzki
Emil C. Reisinger
Brigitte Müller-Hilke
Publication date
01-12-2022
Publisher
BioMed Central
Published in
BMC Medicine / Issue 1/2022
Electronic ISSN: 1741-7015
DOI
https://doi.org/10.1186/s12916-022-02240-4

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