Article (Scientific journals)
Antibody response in children with multisystem inflammatory syndrome related to COVID-19 (MIS-C) compared to children with uncomplicated COVID-19.
Thiriard, Anaïs; Meyer, Benjamin; Eberhardt, Christiane S et al.
2023In Frontiers in Immunology, 14, p. 1107156
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Keywords :
MIS-C multisystem inflammatory syndrome in children; SARS-CoV-2; antibody response; commensals; common coronavirus; functional antibody; Antibodies, Viral; Blood Group Antigens; Immunoglobulin A; Immunoglobulin G; Immunoglobulin M; Humans; Child; Antibody Formation; COVID-19; Connective Tissue Diseases; Immunology and Allergy; Immunology
Abstract :
[en] [en] OBJECTIVES: To comprehensively analyze the quality of the antibody response between children with Multisystem inflammatory syndrome (MIS-C) and age-matched controls at one month after SARS-CoV-2 exposure, and infected in the same time-period. METHODS: Serum from 20 MIS-C children at admission, and 14 control children were analyzed. Antigen specific antibody isotypes and subclasses directed against various antigens of SARS-CoV-2 as well as against human common coronavirus (HCoVs) and commensal or pathogenic microorganisms were assessed by a bead-based multiplexed serological assay and by ELISA. The functionality of these antibodies was also assessed using a plaque reduction neutralization test, a RBD-specific avidity assay, a complement deposition assay and an antibody-dependent neutrophil phagocytosis (ADNP) assay. RESULTS: Children with MIS-C developed a stronger IgA antibody response in comparison to children with uncomplicated COVID-19, while IgG and IgM responses are largely similar in both groups. We found a typical class-switched antibody profile with high level of IgG and IgA titers and a measurable low IgM due to relatively recent SARS-CoV-2 infection (one month). SARS-CoV-2-specific IgG antibodies of MIS-C children had higher functional properties (higher neutralization activity, avidity and complement binding) as compared to children with uncomplicated COVID-19. There was no difference in the response to common endemic coronaviruses between both groups. However, MIS-C children had a moderate increase against mucosal commensal and pathogenic strains, reflecting a potential association between a disruption of the mucosal barrier with the disease. CONCLUSION: Even if it is still unclear why some children develop a MIS-C, we show here that MIS-C children produce higher titers of IgA antibodies, and IgG antibodies with higher functionality, which could reflect the local gastro-intestinal mucosal inflammation potentially induced by a sustained SARS-CoV-2 gut infection leading to continuous release of SARS-CoV-2 antigens.
Disciplines :
Immunology & infectious disease
Author, co-author :
Thiriard, Anaïs;  Institute for Medical Immunology, Université Libre de Bruxelles, Brussels, Belgium
Meyer, Benjamin;  Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
Eberhardt, Christiane S;  Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
Loevy, Natasha;  Pediatric Platform for Clinical Research, Department of Woman, Child and Adolescent Medicine, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
Grazioli, Serge;  Division of Neonatal and Pediatric Intensive Care, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
Adouan, Wafae;  Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
Fontannaz, Paola;  Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
Marechal, Fabienne;  Pediatric Platform for Clinical Research, Department of Woman, Child and Adolescent Medicine, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
L'Huillier, Arnaud G;  Pediatric Infectious Diseases Unit, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
Siegrist, Claire-Anne;  Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
Georges, Daphnée ;  Université de Liège - ULiège > Integrative Biological Sciences (InBioS) ; Institute for Medical Immunology, Université Libre de Bruxelles, Brussels, Belgium
Putignano, Antonella;  Institute for Medical Immunology, Université Libre de Bruxelles, Brussels, Belgium
Marchant, Arnaud;  Institute for Medical Immunology, Université Libre de Bruxelles, Brussels, Belgium
Didierlaurent, Arnaud M;  Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
Blanchard-Rohner, Geraldine;  Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland ; Pediatric Immunology and Vaccinology Unit, Children's Hospital of Geneva, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
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Language :
English
Title :
Antibody response in children with multisystem inflammatory syndrome related to COVID-19 (MIS-C) compared to children with uncomplicated COVID-19.
Publication date :
2023
Journal title :
Frontiers in Immunology
eISSN :
1664-3224
Publisher :
Frontiers Media S.A., Switzerland
Volume :
14
Pages :
1107156
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
Fund Project Research and Development (PRD) of the University Hospital of Geneva. Open access funding by University of Geneva.
Available on ORBi :
since 11 June 2024

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