Tracking the immune response profiles elicited by the BNT162b2 vaccine in COVID-19 unexperienced and experienced individuals

Copyright © 2024. Published by Elsevier Inc..

Multiple vaccines have been approved to control COVID-19 pandemic, with Pfizer/BioNTech (BNT162b2) being widely used. We conducted a longitudinal analysis of the immune response elicited after three doses of the BNT162b2 vaccine in individuals who have previously experienced SARS-CoV-2 infection and in unexperienced ones. We conducted immunological analyses and single-cell transcriptomics of circulating T and B lymphocytes, combined to CITE-seq or LIBRA-seq, and VDJ-seq. We found that antibody levels against SARS-CoV-2 Spike, NTD and RBD from wild-type, delta and omicron VoCs show comparable dynamics in both vaccination groups, with a peak after the second dose, a decline after six months and a restoration after the booster dose. The antibody neutralization activity was maintained, with lower titers against the omicron variant. Spike-specific memory B cell response was sustained over the vaccination schedule. Clonal analysis revealed that Spike-specific B cells were polyclonal, with a partial clone conservation from natural infection to vaccination. Spike-specific T cell responses were oriented towards effector and effector memory phenotypes, with similar trends in unexperienced and experienced individuals. The CD8 T cell compartment showed a higher clonal expansion and persistence than CD4 T cells. The first two vaccinations doses tended to induce new clones rather than promoting expansion of pre-existing clones. However, we identified a fraction of Spike-specific CD8 T cell clones persisting from natural infection that were boosted by vaccination and clones specifically induced by vaccination. Collectively, our observations revealed a moderate effect of the second dose in enhancing the immune responses elicited after the first vaccination. Differently, we found that a third dose was necessary to restore comparable levels of neutralizing antibodies and Spike-specific T and B cell responses in individuals who experienced a natural SARS-CoV-2 infection.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:261

Enthalten in:

Clinical immunology (Orlando, Fla.) - 261(2024) vom: 01. Apr., Seite 110164

Sprache:

Englisch

Beteiligte Personen:

Galeota, Eugenia [VerfasserIn]
Bevilacqua, Valeria [VerfasserIn]
Gobbini, Andrea [VerfasserIn]
Gruarin, Paola [VerfasserIn]
Bombaci, Mauro [VerfasserIn]
Pesce, Elisa [VerfasserIn]
Favalli, Andrea [VerfasserIn]
Lombardi, Andrea [VerfasserIn]
Vincenti, Francesca [VerfasserIn]
Ongaro, Jessica [VerfasserIn]
Fabbris, Tanya [VerfasserIn]
Curti, Serena [VerfasserIn]
Martinovic, Martina [VerfasserIn]
Toccafondi, Mirco [VerfasserIn]
Lorenzo, Mariangela [VerfasserIn]
Critelli, Angelica [VerfasserIn]
Clemente, Francesca [VerfasserIn]
Crosti, Mariacristina [VerfasserIn]
Sarnicola, Maria Lucia [VerfasserIn]
Martinelli, Manuele [VerfasserIn]
La Sala, Lucia [VerfasserIn]
Espadas, Alejandro [VerfasserIn]
Donnici, Lorena [VerfasserIn]
Borghi, Maria Orietta [VerfasserIn]
De Feo, Tullia [VerfasserIn]
De Francesco, Raffaele [VerfasserIn]
Prati, Daniele [VerfasserIn]
Meroni, Pier Luigi [VerfasserIn]
Notarbartolo, Samuele [VerfasserIn]
Geginat, Jens [VerfasserIn]
Gori, Andrea [VerfasserIn]
Bandera, Alessandra [VerfasserIn]
Abrignani, Sergio [VerfasserIn]
Grifantini, Renata [VerfasserIn]

Links:

Volltext

Themen:

Antibodies, Neutralizing
Antibodies, Viral
BNT162 Vaccine
Journal Article
Research Support, Non-U.S. Gov't
SARS-CoV-2 vaccination
Single-cell multimodal longitudinal analysis
T and B cell memory to SARS-CoV-2 infection and vaccination
Vaccines

Anmerkungen:

Date Completed 18.03.2024

Date Revised 10.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.clim.2024.110164

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369076834