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Cross-Sectional Evaluation of Humoral Responses against SARS-CoV-2 Spike

2020; Elsevier BV; Volume: 1; Issue: 7 Linguagem: Inglês

10.1016/j.xcrm.2020.100126

2666-3791

Jérémie Prévost, Romain Gasser, Guillaume Beaudoin-Bussières, Jonathan Richard, Ralf Duerr, Annemarie Laumaea, Sai Priya Anand, Guillaume Goyette, Mehdi Benlarbi, Shilei Ding, Halima Medjahed, Antoine Lewin, Josée Perreault, Tony Tremblay, Gabrielle Gendron‐Lepage, Nicolas Gauthier, Marc Carrier, Diane Marcoux, Alain Piché, Myriam Lavoie, Alexandre Benoît, Vilayvong Loungnarath, Gino Brochu, Élie Haddad, Hannah D. Stacey, Matthew S. Miller, Marc Desforges, Pierre J. Talbot, Graham T. Gould Maule, Marceline Côté, Christian Therrien, Bouchra Serhir, Renée Bazin, Michel Roger, Andrés Finzi,

Poxvirus research and outbreaks

HighlightsAntibodies against SARS-CoV-2 Spike correlate with COVID-19 severityRBD-specific IgM and IgA decline more rapidly than IgGSARS-CoV-2 neutralizing antibodies are elicited within 2 weeks of infectionNeutralizing antibodies decline significantly after resolution of the infectionSummarySARS-CoV-2 is responsible for the coronavirus disease 2019 (COVID-19) pandemic, infecting millions of people and causing hundreds of thousands of deaths. The Spike glycoproteins of SARS-CoV-2 mediate viral entry and are the main targets for neutralizing antibodies. Understanding the antibody response directed against SARS-CoV-2 is crucial for the development of vaccine, therapeutic, and public health interventions. Here, we perform a cross-sectional study on 106 SARS-CoV-2-infected individuals to evaluate humoral responses against SARS-CoV-2 Spike. Most infected individuals elicit anti-Spike antibodies within 2 weeks of the onset of symptoms. The levels of receptor binding domain (RBD)-specific immunoglobulin G (IgG) persist over time, and the levels of anti-RBD IgM decrease after symptom resolution. Although most individuals develop neutralizing antibodies within 2 weeks of infection, the level of neutralizing activity is significantly decreased over time. Our results highlight the importance of studying the persistence of neutralizing activity upon natural SARS-CoV-2 infection.Graphical abstract