Proteomic analysis of mucosal and systemic responses to SARS-CoV-2 antigen
File(s)vaccines-11-00334-v2.pdf (5.86 MB)
Published version
Author(s)
Type
Journal Article
Abstract
The mucosal environment of the upper respiratory tract is the first barrier of protection against SARS-CoV-2 transmission. However, the mucosal factors involved in viral transmission and po-tentially modulating the capacity to prevent such transmission, have not fully been identified. In this pilot proteomics study, we compared mucosal and systemic compartments in a South African co-hort of vaccinated and unvaccinated individuals undergoing maxillofacial surgery with previous history of COVID-19 or not. Inflammatory profiles were analyzed in plasma, nasopharyngeal swabs, and nasal and oral tissue explant cultures, using Olink and Luminex technologies. SARS-CoV-2-specific antibody levels were measured in serum and tissue explants. An increased pro-inflammatory proteomic profile was measured in the nasal compartment compared to plasma. However, IP-10 and MIG levels were higher in secretions than in nasal tissue, and the opposite was observed for TGF-. Nasal anti-SARS-CoV-2 spike IgG correlated with mucosal MIG expression for all participants. A further positive correlation was found with IP-10 in BioNTech/Pfizer-vaccinated individuals. Systemic levels of anti-SARS-CoV-2 spike IgG elicited by this vaccine, correlated with plasma IL-10, IL-6 and HBD4. Proteomic profiles measured in mucosal tissues and secretions using combined technologies could reveal correlates of protection at the mucosal portals of viral entry.
Date Issued
2023-02
Date Acceptance
2023-01-31
Citation
Vaccines, 2023, 11 (2), pp.1-15
ISSN
2076-393X
Publisher
MDPI AG
Start Page
1
End Page
15
Journal / Book Title
Vaccines
Volume
11
Issue
2
Copyright Statement
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.mdpi.com/2076-393X/11/2/334
Publication Status
Published
Article Number
334
Date Publish Online
2023-02-02