[HTML][HTML] Beyond neutralization: Fc-dependent antibody effector functions in SARS-CoV-2 infection

A Zhang, HD Stacey, MR D'Agostino, Y Tugg… - Nature Reviews …, 2023 - nature.com
Nature Reviews Immunology, 2023nature.com
Neutralizing antibodies are known to have a crucial role in protecting against SARS-CoV-2
infection and have been suggested to be a useful correlate of protection for vaccine clinical
trials and for population-level surveys. In addition to neutralizing virus directly, antibodies
can also engage immune effectors through their Fc domains, including Fc receptor-
expressing immune cells and complement. The outcome of these interactions depends on a
range of factors, including antibody isotype–Fc receptor combinations, Fc receptor-bearing …
Abstract
Neutralizing antibodies are known to have a crucial role in protecting against SARS-CoV-2 infection and have been suggested to be a useful correlate of protection for vaccine clinical trials and for population-level surveys. In addition to neutralizing virus directly, antibodies can also engage immune effectors through their Fc domains, including Fc receptor-expressing immune cells and complement. The outcome of these interactions depends on a range of factors, including antibody isotype–Fc receptor combinations, Fc receptor-bearing cell types and antibody post-translational modifications. A growing body of evidence has shown roles for these Fc-dependent antibody effector functions in determining the outcome of SARS-CoV-2 infection. However, measuring these functions is more complicated than assays that measure antibody binding and virus neutralization. Here, we examine recent data illuminating the roles of Fc-dependent antibody effector functions in the context of SARS-CoV-2 infection, and we discuss the implications of these data for the development of next-generation SARS-CoV-2 vaccines and therapeutics.
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