The neonatal Fc receptor, FcRn, as a target for drug delivery and therapy

JT Sockolosky, FC Szoka - Advanced drug delivery reviews, 2015 - Elsevier
Immunoglobulin G (IgG)-based drugs are arguably the most successful class of protein
therapeutics due in part to their remarkably long blood circulation. This arises from IgG …

The neonatal Fc receptor (FcRn) binds independently to both sites of the IgG homodimer with identical affinity

YN Abdiche, YA Yeung, J Chaparro-Riggers, I Barman… - MAbs, 2015 - Taylor & Francis
The neonatal Fc receptor (FcRn) is expressed by cells of epithelial, endothelial and myeloid
lineages and performs multiple roles in adaptive immunity. Characterizing the FcRn/IgG …

The Fab region of IgG impairs the internalization pathway of FcRn upon Fc engagement

M Brinkhaus, E Pannecoucke, EJ van der Kooi… - Nature …, 2022 - nature.com
Binding to the neonatal Fc receptor (FcRn) extends serum half-life of IgG, and antagonizing
this interaction is a promising therapeutic approach in IgG-mediated autoimmune diseases …

Monoclonal antibody clearance: impact of modulating the interaction of IgG with the neonatal Fc receptor

A Datta-Mannan, DR Witcher, Y Tang, J Watkins… - Journal of Biological …, 2007 - ASBMB
The neonatal Fc receptor (FcRn) plays a critical role in regulating IgG homeostasis in vivo.
There are mixed reports on whether modification of the interaction with FcRn can be used as …

Reduction of IgG in nonhuman primates by a peptide antagonist of the neonatal Fc receptor FcRn

AR Mezo, KA McDonnell, CAT Hehir… - Proceedings of the …, 2008 - National Acad Sciences
The neonatal Fc receptor FcRn provides IgG molecules with their characteristically long half-
lives in vivo by protecting them from intracellular catabolism and then returning them to the …

Neonatal Fc receptor expression in macrophages is indispensable for IgG homeostasis

DK Challa, X Wang, HP Montoyo, R Velmurugan… - MAbs, 2019 - Taylor & Francis
The maintenance of the homeostasis of immunoglobulin G (IgG) represents a fundamental
aspect of humoral immunity that has direct relevance to the successful delivery of antibody …

Blocking FcRn in humans reduces circulating IgG levels and inhibits IgG immune complex–mediated immune responses

LJ Blumberg, JE Humphries, SD Jones, LB Pearce… - Science …, 2019 - science.org
The neonatal crystallizable fragment receptor (FcRn) functions as an intracellular protection
receptor for immunoglobulin G (IgG). Recently, several clinical studies have reported the …

Humanized IgG1 variants with differential binding properties to the neonatal Fc receptor: relationship to pharmacokinetics in mice and primates

A Datta-Mannan, DR Witcher, Y Tang, J Watkins… - Drug metabolism and …, 2007 - ASPET
It is well established that the neonatal Fc receptor (FcRn) plays a critical role in regulating
IgG homeostasis in vivo. As such, modification of the interaction of IgG with FcRn has been …

Increasing the affinity of a human IgG1 for the neonatal Fc receptor: biological consequences

WFD Acqua, RM Woods, ES Ward… - The Journal of …, 2002 - journals.aai.org
Many biological functions, including control of the homeostasis and maternofetal transfer of
serum γ-globulins, are mediated by the MHC class I-related neonatal FcR (FcRn). A …

The multiple facets of FcRn in immunity

NM Stapleton, HK Einarsdóttir… - Immunological …, 2015 - Wiley Online Library
Summary The neonatal Fc receptor, FcRn, is best known for its role in transporting IgG in
various tissues, providing newborns with humoral immunity, and for prolonging the half‐life …