Antibody-Dependent Cellular Phagocytosis in Antiviral Immune Responses. 2019

Matthew Zirui Tay, and Kevin Wiehe, and Justin Pollara
Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, United States.

Antiviral activities of antibodies may either be dependent only on interactions between the antibody and cognate antigen, as in binding and neutralization of an infectious virion, or instead may require interactions between antibody-antigen immune complexes and immunoproteins or Fc receptor expressing immune effector cells. These Fc receptor-dependent antibody functions provide a direct link between the innate and adaptive immune systems by combining the potent antiviral activity of innate effector cells with the diversity and specificity of the adaptive humoral response. The Fc receptor-dependent function of antibody-dependent cellular phagocytosis (ADCP) provides mechanisms for clearance of virus and virus-infected cells, as well as for stimulation of downstream adaptive immune responses by facilitating antigen presentation, or by stimulating the secretion of inflammatory mediators. In this review, we discuss the properties of Fc receptors, antibodies, and effector cells that influence ADCP. We also provide and interpret evidence from studies that support a potential role for ADCP in either inhibiting or enhancing viral infection. Finally, we describe current approaches used to measure antiviral ADCP and discuss considerations for the translation of studies performed in animal models. We propose that additional investigation into the role of ADCP in protective viral responses, the specific virus epitopes targeted by ADCP antibodies, and the types of phagocytes and Fc receptors involved in ADCP at sites of virus infection will provide insight into strategies to successfully leverage this important immune response for improved antiviral immunity through rational vaccine design.

UI MeSH Term Description Entries
D010586 Phagocytes Cells that can carry out the process of PHAGOCYTOSIS. Phagocyte,Phagocytic Cell,Phagocytic Cells,Cell, Phagocytic,Cells, Phagocytic
D010587 Phagocytosis The engulfing and degradation of microorganisms; other cells that are dead, dying, or pathogenic; and foreign particles by phagocytic cells (PHAGOCYTES). Phagocytoses
D011961 Receptors, Fc Molecules found on the surface of some, but not all, B-lymphocytes, T-lymphocytes, and macrophages, which recognize and combine with the Fc (crystallizable) portion of immunoglobulin molecules. Fc Receptors,Fc Receptor,Receptor, Fc
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000914 Antibodies, Viral Immunoglobulins produced in response to VIRAL ANTIGENS. Viral Antibodies
D000920 Antibody-Dependent Cell Cytotoxicity The phenomenon of antibody-mediated target cell destruction by non-sensitized effector cells. The identity of the target cell varies, but it must possess surface IMMUNOGLOBULIN G whose Fc portion is intact. The effector cell is a "killer" cell possessing Fc receptors. It may be a lymphocyte lacking conventional B- or T-cell markers, or a monocyte, macrophage, or polynuclear leukocyte, depending on the identity of the target cell. The reaction is complement-independent. ADCC,Cytotoxicity, Antibody-Dependent Cell,Cell Cytoxicity, Antibody-Dependent,Antibody Dependent Cell Cytotoxicity,Antibody-Dependent Cell Cytotoxicities,Antibody-Dependent Cell Cytoxicities,Antibody-Dependent Cell Cytoxicity,Cell Cytotoxicities, Antibody-Dependent,Cell Cytotoxicity, Antibody-Dependent,Cell Cytoxicities, Antibody-Dependent,Cell Cytoxicity, Antibody Dependent,Cytotoxicities, Antibody-Dependent Cell,Cytotoxicity, Antibody Dependent Cell,Cytoxicities, Antibody-Dependent Cell,Cytoxicity, Antibody-Dependent Cell
D000939 Epitopes Sites on an antigen that interact with specific antibodies. Antigenic Determinant,Antigenic Determinants,Antigenic Specificity,Epitope,Determinant, Antigenic,Determinants, Antigenic,Specificity, Antigenic
D014777 Virus Diseases A general term for diseases caused by viruses. Viral Diseases,Viral Infections,Virus Infections,Disease, Viral,Disease, Virus,Diseases, Viral,Diseases, Virus,Infection, Viral,Infection, Virus,Infections, Viral,Infections, Virus,Viral Disease,Viral Infection,Virus Disease,Virus Infection

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