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2016 ; 9
(ä): 209-219
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Fc gamma receptors: glycobiology and therapeutic prospects
#MMPMID27895507
Hayes JM
; Wormald MR
; Rudd PM
; Davey GP
J Inflamm Res
2016[]; 9
(ä): 209-219
PMID27895507
show ga
Therapeutic antibodies hold great promise for the treatment of cancer and
autoimmune diseases, and developments in antibody-drug conjugates and bispecific
antibodies continue to enhance treatment options for patients. Immunoglobulin
(Ig) G antibodies are proteins with complex modifications, which have a
significant impact on their function. The most important of these modifications
is glycosylation, the addition of conserved glycans to the antibody Fc region,
which is critical for its interaction with the immune system and induction of
effector activities such as antibody-dependent cell cytotoxicity, complement
activation and phagocytosis. Communication of IgG antibodies with the immune
system is controlled and mediated by Fc gamma receptors (Fc?Rs), membrane-bound
proteins, which relay the information sensed and gathered by antibodies to the
immune system. These receptors are also glycoproteins and provide a link between
the innate and adaptive immune systems. Recent information suggests that this
receptor glycan modification is also important for the interaction with
antibodies and downstream immune response. In this study, the current knowledge
on Fc?R glycosylation is discussed, and some insight into its role and influence
on the interaction properties with IgG, particularly in the context of
biotherapeutics, is provided. For the purpose of this study, other Fc receptors
such as Fc?R, Fc?R or FcRn are not discussed extensively, as IgG-based antibodies
are currently the only therapeutic antibody-based products on the market. In
addition, Fc?Rs as therapeutics and therapeutic targets are discussed, and
insight into and comment on the therapeutic aspects of receptor glycosylation are
provided.