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Proteomic Analysis of Mucosal and Systemic Responses to SARS-CoV-2 Antigen
Univ Witwatersrand, Fac Hlth Sci, Perinatal HIV Res Unit, ZA-2000 Johannesburg, South Africa..
Univ Witwatersrand, Natl Res Fdn, Fac Hlth Sci, Ctr Excellence Biomed TB Res, Johannesburg, South Africa.;Natl Hlth Lab Serv, ZA-2000 Johannesburg, South Africa..
Karolinska Inst, Dept Microbiol Tumor & Cell Biol, SE-17165 Solna, Sweden..
Univ Witwatersrand, Fac Hlth Sci, Perinatal HIV Res Unit, ZA-2000 Johannesburg, South Africa..
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2023 (English)In: Vaccines, E-ISSN 2076-393X, Vol. 11, no 2, article id 334Article in journal (Refereed) Published
Abstract [en]

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 potentially 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 cohort 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-beta. 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.

Place, publisher, year, edition, pages
MDPI AG , 2023. Vol. 11, no 2, article id 334
Keywords [en]
SARS-CoV-2, vaccine, tissue explants, cytokines
National Category
Infectious Medicine
Identifiers
URN: urn:nbn:se:kth:diva-325087DOI: 10.3390/vaccines11020334ISI: 000941182900001PubMedID: 36851212Scopus ID: 2-s2.0-85149654990OAI: oai:DiVA.org:kth-325087DiVA, id: diva2:1746626
Note

QC 20230329

Available from: 2023-03-29 Created: 2023-03-29 Last updated: 2023-03-29Bibliographically approved

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Fredolini, Claudia

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