Presence and strength of binding of IgM, IgG and IgA antibodies against SARS-CoV-2 during CoViD-19 infection

Richard B.M. Schasfoort*, Jos van Weperen, Margot van Amsterdam, Judicaël Parisot, Jan Hendriks, Michelle Koerselman, Marcel Karperien, Anouk Mentink, Martin Bennink, Hans Krabbe, Leon W.M.M. Terstappen, A.H. Leontine Mulder

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Surface Plasmon Resonance imaging (SPRi) was used to determine the presence and strength of binding of IgG, IgM and IgA against the Receptor Binding Domain (RBD) of SARS-CoV-2 in sera of 119 CoViD-19 patients. The SPRi assay measures the antibody isotype levels and the strength of binding to the RBD of ultimate 384 patient samples in one run. It turns out that during the course of the disease, the IgG levels and strength of binding increased while generally the IgM and IgA levels go down. Recovered patients all show high strength of binding of the IgG type to the RBD protein. The anti-RBD immunoglobulins SPRi assay provides additional insights in the immune status of patients recovering from CoViD-19 and this new method can furthermore be applied for the assessment of the quality of the immune reaction of healthy individuals to SARS-CoV-2 in vaccination programs.

Original languageEnglish
Article number113165
JournalBiosensors & bioelectronics
Volume183
DOIs
Publication statusPublished - 1 Jul 2021

Keywords

  • UT-Hybrid-D
  • Biosensor
  • off-rate
  • SPR
  • Surface plasmon resonance imaging
  • Affinity

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