Measuring T-Cell Responses against SARS-CoV-2 Is of Utility for Disease and Vaccination Management
Safont Gonzalez, Guillem (Universitat Autònoma de Barcelona)
Latorre, Irene (Universitat Autònoma de Barcelona)
Villar-Hernández, Raquel (Universitat Autònoma de Barcelona)
Stojanovic, Zorac (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Marín, Alicia (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Pérez-Cano, Cristina (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Lacoma, Alicia (Universitat Autònoma de Barcelona)
Molina-Moya, Barbara (Universitat Autònoma de Barcelona)
Solis, Alan Jhurior (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Arméstar, Fernando (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Matllo, Joan (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Díaz-Fernández, Sergio (Universitat Autònoma de Barcelona)
Cendón Esteve, Arnau (Universitat Autònoma de Barcelona)
Sokalchuk, Liliya (Universitat Autònoma de Barcelona)
Tolosa, Guillermo (Diagnostic and Research in Immunodeficiencies Jeffrey Modell Center. Cytometry and Cellular Culture Area. La Frontera University)
Casas, Irma (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Rosell, Antoni (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Domínguez, José (Universitat Autònoma de Barcelona)

Data:	2022
Resum:	The measurement of specific T-cell responses can be a useful tool for COVID-19 diagnostics and clinical management. In this study, we evaluated the IFN-γ T-cell response against the main SARS-CoV-2 antigens (spike, nucleocapsid and membrane) in acute and convalescent individuals classified according to severity, and in vaccinated and unvaccinated controls. IgG against spike and nucleocapsid were also measured. Spike antigen triggered the highest number of T-cell responses. Acute patients showed a low percentage of positive responses when compared to convalescent (71. 6% vs. 91. 7%, respectively), but increased during hospitalization and with severity. Some convalescent patients showed an IFN-γ T-cell response more than 200 days after diagnosis. Only half of the vaccinated individuals displayed an IFN-γ T-cell response after the second dose. IgG response was found in a higher percentage of individuals compared to IFN-γ T-cell responses, and moderate correlations between both responses were seen. However, in some acute COVID-19 patients specific T-cell response was detected, but not IgG production. We found that the chances of an IFN-γ T-cell response against SARS-CoV-2 is low during acute phase, but may increase over time, and that only half of the vaccinated individuals had an IFN-γ T-cell response after the second dose.
Ajuts:	European Commission. Horizon 2020 823854 Instituto de Salud Carlos III CP20/00070
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Journal of clinical medicine, Vol. 11 Núm. 17 (september 2022) , p. 5103, ISSN 2077-0383

DOI: 10.3390/jcm11175103
PMID: 36079033

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