Non Animal Testing Database

Antibodies from COVID-19-vaccinated recognise different spike protein structures than antibodies from convalescents

December 2021
Paul-Ehrlich-Institut, Langen, Germany
Many of the approved SARS-CoV-2 vaccines are based on a stabilized variant of the spike protein. This raises the question of whether the immune response against the stabilized spike is identical to the immune response that is elicited by the native spike in the case of a SARS-CoV-2 infection. Using a peptide array-based approach, the authors analysed the binding of antibodies from Comirnaty-elicited, convalescent, and control sera to the peptides covering the spike protein. A total of 37 linear epitopes were identified. A total of 26 of these epitopes were almost exclusively recognized by the convalescent sera. This indicates a higher spike-specific antibody diversity in convalescent sera. These differences could be relevant for the breadth of the spike-specific immune response.
Comirnaty-elicited and convalescent sera recognize different spike epitopes
Eberhard Hildt, Sascha Hein
Added on: 04-04-2022
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