Neutralizing antibody-independent immunity to SARS-CoV-2 in Syrian hamsters and human ACE-2 transgenic mice immunized with a RBD/Nucleocapsid fusion protein
Abstract:The nucleocapsid (N) and the receptor binding domain (RBD) of the Spike (S) proteins elicit robust antibody and T cell responses either in vaccinated or COVID-19 convalescent individuals. We generated a chimeric protein that comprises the sequences of RBD from S and N antigens (SpiN). SpiN was highly immunogenic and elicited a strong IFNγ response from T cells and high levels of antibodies to the inactivated virus, but no neutralizing antibodies (nAb). Importantly, hamsters and the human Angiotensin Convertase… Show more
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