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Multiparametric analysis of the specific immune response against SARS-CoV-2
L. Vránová, I. Poláková, Š. Vaníková, M. Saláková, J. Musil, M. Vaníčková, O. Vencálek, M. Holub, M. Bohoněk, D. Řezáč, J. Dresler, R. Tachezy, M. Šmahel
Jazyk angličtina Země Anglie, Velká Británie
Typ dokumentu časopisecké články
- MeSH
- B-lymfocyty imunologie MeSH
- buněčná imunita imunologie MeSH
- COVID-19 * imunologie MeSH
- dospělí MeSH
- ELISPOT MeSH
- glykoprotein S, koronavirus imunologie MeSH
- humorální imunita MeSH
- imunologická paměť MeSH
- leukocyty mononukleární imunologie MeSH
- lidé středního věku MeSH
- lidé MeSH
- protilátky virové * krev imunologie MeSH
- SARS-CoV-2 * imunologie MeSH
- senioři MeSH
- T-lymfocyty imunologie MeSH
- vakcíny proti COVID-19 imunologie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
BACKGROUND: SARS-CoV-2, which causes COVID-19, has killed more than 7 million people worldwide. Understanding the development of postinfectious and postvaccination immune responses is necessary for effective treatment and the introduction of appropriate antipandemic measures. OBJECTIVES: We analysed humoral and cell-mediated anti-SARS-CoV-2 immune responses to spike (S), nucleocapsid (N), membrane (M), and open reading frame (O) proteins in individuals collected up to 1.5 years after COVID-19 onset and evaluated immune memory. METHODS: Peripheral blood mononuclear cells and serum were collected from patients after COVID-19. Sampling was performed in two rounds: 3-6 months after infection and after another year. Most of the patients were vaccinated between samplings. SARS-CoV-2-seronegative donors served as controls. ELISpot assays were used to detect SARS-CoV-2-specific T and B cells using peptide pools (S, NMO) or recombinant proteins (rS, rN), respectively. A CEF peptide pool consisting of selected viral epitopes was applied to assess the antiviral T-cell response. SARS-CoV-2-specific antibodies were detected via ELISA and a surrogate virus neutralisation assay. RESULTS: We confirmed that SARS-CoV-2 infection induces the establishment of long-term memory IgG+ B cells and memory T cells. We also found that vaccination enhanced the levels of anti-S memory B and T cells. Multivariate comparison also revealed the benefit of repeated vaccination. Interestingly, the T-cell response to CEF was lower in patients than in controls. CONCLUSION: This study supports the importance of repeated vaccination for enhancing immunity and suggests a possible long-term perturbation of the overall antiviral immune response caused by SARS-CoV-2 infection.
Faculty of Biomedical Engineering Czech Technical University Prague Czech Republic
Military Health Institute Military Medical Agency Prague Czech Republic
Citace poskytuje Crossref.org
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