Building a better antibody through the Fc: advances and challenges in harnessing antibody Fc effector functions for antiviral protection

BM Gunn, S Bai - Human Vaccines & Immunotherapeutics, 2021 - Taylor & Francis
BM Gunn, S Bai
Human Vaccines & Immunotherapeutics, 2021Taylor & Francis
Antibodies can provide antiviral protection through neutralization and recruitment of innate
effector functions through the Fc domain. While neutralization has long been appreciated for
its role in antibody-mediated protection, a growing body of work indicates that the antibody
Fc domain also significantly contributes to antiviral protection. Recruitment of innate immune
cells such as natural killer cells, neutrophils, monocytes, macrophages, dendritic cells and
the complement system by antibodies can lead to direct restriction of viral infection as well …
Abstract
Antibodies can provide antiviral protection through neutralization and recruitment of innate effector functions through the Fc domain. While neutralization has long been appreciated for its role in antibody-mediated protection, a growing body of work indicates that the antibody Fc domain also significantly contributes to antiviral protection. Recruitment of innate immune cells such as natural killer cells, neutrophils, monocytes, macrophages, dendritic cells and the complement system by antibodies can lead to direct restriction of viral infection as well as promoting long-term antiviral immunity. Monoclonal antibody therapeutics against viruses are increasingly incorporating Fc-enhancing features to take advantage of the Fc domain, uncovering a surprising breadth of mechanisms through which antibodies can control viral infection. Here, we review the recent advances in our understanding of antibody-mediated innate immune effector functions in protection from viral infection and review the current approaches and challenges to effectively leverage innate immune cells via antibodies.
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