Abstract
Background: Afucosylated IgG1 responses have only been found against membrane-embedded epitopes, including anti-S in SARS-CoV-2 infections. These responses, intrinsically protective through enhanced FcγRIIIa binding, can also trigger exacerbated pro-inflammatory responses in severe COVID-19. We investigated if the BNT162b2 SARS-CoV-2 mRNA also induced afucosylated IgG responses. Methods: Blood from vaccinees during the first vaccination wave was collected. Liquid chromatography-Mass spectrometry (LC-MS) was used to study anti-S IgG1 Fc glycoprofiles. Responsiveness of alveolar-like macrophages to produce proinflammatory cytokines in presence of sera and antigen was tested. Antigen-specific B cells were characterized and glycosyltransferase levels were investigated by Fluorescence-Activated Cell Sorting (FACS). Findings: Initial transient afucosylated anti-S IgG1 responses were found in naive vaccinees, but not in antigen-experienced ones. All vaccinees had increased galactosylated and sialylated anti-S IgG1. Both naive and antigen-experienced vaccinees showed relatively low macrophage activation potential, as expected, due to the low antibody levels for naive individuals with afucosylated IgG1, and low afucosylation levels for antigen-experienced individuals with high levels of anti-S. Afucosylation levels correlated with FUT8 expression in antigen-specific plasma cells in naive individuals. Interestingly, low fucosylation of anti-S IgG1 upon seroconversion correlated with high anti-S IgG levels after the second dose. Interpretation: Here, we show that BNT162b2 mRNA vaccination induces transient afucosylated anti-S IgG1 responses in naive individuals. This observation warrants further studies to elucidate the clinical context in which potent afucosylated responses would be preferred. Funding: LSBR 1721, 1908; ZonMW 10430012010021, 09150161910033, 10430012010008; DFG 398859914, 400912066, 390884018; PMI; DOI4-Nr. 3; H2020-MSCA-ITN 721815.
| Original language | English |
|---|---|
| Article number | 104408 |
| Journal | eBioMedicine |
| Volume | 87 |
| Pages (from-to) | 104408 |
| DOIs | |
| Publication status | Published - 01.01.2023 |
Funding
LSBR 1721, 1908; ZonMW 10430012010021, 09150161910033, 10430012010008; DFG 398859914, 400912066, 390884018; PMI; DOI4-Nr. 3; H2020-MSCA-ITN 721815.We thank the Academic Medical Centre of the University of Amsterdam, the Sanquin Blood Supply Foundation and The Fatebenefratelli-Sacco Infectious Diseases Physicians Group. We are greatly indebted to all cohort participants for their extensive participation. Funding: Landsteiner Foundation for Blood Transfusion Research (LSBR) grants 1721 and 1908 (GV) ZonMw COVID-19 grants 1043001 201 0021 (GV). Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) 398859914 (EH 221/10-1); 400912066 (EH 221/11-1); and 390884018 (Germany's Excellence Strategies - EXC 2167, Precision Medicine in Chronic Inflammation (PMI)) (ME). Federal State Schleswig-Holstein, Germany (COVID-19 Research Initiative Schleswig-Holstein; DOI4-Nr. 3) (ME). European Union's Horizon 2020 research and innovation program H2020-MSCA-ITN grant agreement number 721815 (MW/TP). Netherlands Organisation for Health Research and Development ZonMw & the Amsterdam UMC Corona Research Fund (Amsterdam UMC COVID-19 S3/HCW study group). The Netherlands Organisation for Health Research and Development ZonMW VENI grant, Grant number 09150161910033 (LAVV). ZonMW COVID-19 grant 10430012010008 (JDD) Funding: Landsteiner Foundation for Blood Transfusion Research (LSBR) grants 1721 and 1908 (GV) ZonMw COVID-19 grants 1043001 201 0021 (GV). Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) 398859914 (EH 221/10-1); 400912066 (EH 221/11-1); and 390884018 (Germany's Excellence Strategies - EXC 2167, Precision Medicine in Chronic Inflammation (PMI)) (ME). Federal State Schleswig-Holstein, Germany (COVID-19 Research Initiative Schleswig-Holstein; DOI4-Nr. 3) (ME). European Union's Horizon 2020 research and innovation program H2020-MSCA-ITN grant agreement number 721815 (MW/TP). Netherlands Organisation for Health Research and Development ZonMw & the Amsterdam UMC Corona Research Fund (Amsterdam UMC COVID-19 S3/HCW study group). The Netherlands Organisation for Health Research and Development ZonMW VENI grant, Grant number 09150161910033 (LAVV). ZonMW COVID-19 grant 10430012010008 (JDD)
Research Areas and Centers
- Academic Focus: Center for Infection and Inflammation Research (ZIEL)
DFG Research Classification Scheme
- 2.21-05 Immunology
Coronavirus related work
- Research on SARS-CoV-2 / COVID-19