EBioMedicine (Jan 2023)

The BNT162b2 mRNA SARS-CoV-2 vaccine induces transient afucosylated IgG1 in naive but not in antigen-experienced vaccineesResearch in context

  • Julie Van Coillie,
  • Tamas Pongracz,
  • Johann Rahmöller,
  • Hung-Jen Chen,
  • Chiara Elisabeth Geyer,
  • Lonneke A. van Vught,
  • Jana Sophia Buhre,
  • Tonći Šuštić,
  • Thijs Luc Junior van Osch,
  • Maurice Steenhuis,
  • Willianne Hoepel,
  • Wenjun Wang,
  • Anne Sophie Lixenfeld,
  • Jan Nouta,
  • Sofie Keijzer,
  • Federica Linty,
  • Remco Visser,
  • Mads Delbo Larsen,
  • Emily Lara Martin,
  • Inga Künsting,
  • Selina Lehrian,
  • Vera von Kopylow,
  • Carsten Kern,
  • Hanna Bele Lunding,
  • Menno de Winther,
  • Niels van Mourik,
  • Theo Rispens,
  • Tobias Graf,
  • Marleen Adriana Slim,
  • René Peter Minnaar,
  • Marije Kristianne Bomers,
  • Jonne Jochum Sikkens,
  • Alexander P.J. Vlaar,
  • C. Ellen van der Schoot,
  • Jeroen den Dunnen,
  • Manfred Wuhrer,
  • Marc Ehlers,
  • Gestur Vidarsson,
  • Spinello Antinori,
  • Cinzia Bassoli,
  • Giovanna Bestetti,
  • Mario Corbellino,
  • Alice Covizzi,
  • Angelica Lupo,
  • Laura Milazzo,
  • Marco Schiuma,
  • Alessandro Torre,
  • Brent Appelman,
  • Diederik Beek van de,
  • Marije K. Bomers,
  • Justin Brabander de,
  • Matthijs C. Brouwer,
  • David T.P. Buis,
  • Nora Chekrouni,
  • Marit J. Gils van,
  • Menno D. Jong de,
  • Ayesha H.A. Lavell,
  • Niels Mourik van,
  • Sabine E. Olie,
  • Edgar J.G. Peters,
  • Tom D.Y. Reijnders,
  • Michiel Schinkel,
  • Alex R. Schuurman,
  • Jonne J. Sikkens,
  • Marleen A. Slim,
  • Yvo M. Smulders,
  • Alexander P.J. Vlaar,
  • Lonneke A. Vught van,
  • Joost W. Wiersinga

Journal volume & issue
Vol. 87
p. 104408

Abstract

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Summary: 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.

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