The homeostasis of IgG is maintained by the neonatal Fc receptor, FcRn. Consequently, antagonism of FcRn to reduce endogenous IgG levels is an emerging strategy for treating antibody-mediated autoimmune disorders using either FcRn-specific antibodies or an engineered Fc fragment. For certain FcRn-specific antibodies, this approach has resulted in reductions in the levels of serum albumin, the other major ligand transported by FcRn. Cellular and molecular analyses of a panel of FcRn antagonists have been carried out to elucidate the mechanisms leading to their differential effects on albumin homeostasis. These analyses have identified 2 processes underlying decreases in albumin levels during FcRn blockade: increased degradation of FcRn and competition between antagonist and albumin for FcRn binding. These findings have potential implications for the design of drugs to modulate FcRn function.
Guanglong Ma, Andrew R. Crowley, Liesbeth Heyndrickx, Ilse Rogiers, Eef Parthoens, Jolien Van Santbergen, Raimund J. Ober, Vladimir Bobkov, Hans de Haard, Peter Ulrichts, Erik Hofman, Els Louagie, Bianca Balbino, E. Sally Ward
Usage data is cumulative from May 2024 through June 2024.
Usage | JCI | PMC |
---|---|---|
Text version | 1,495 | 0 |
889 | 0 | |
Figure | 108 | 0 |
Supplemental data | 270 | 0 |
Citation downloads | 29 | 0 |
Totals | 2,791 | 0 |
Total Views | 2,791 |
Usage information is collected from two different sources: this site (JCI) and Pubmed Central (PMC). JCI information (compiled daily) shows human readership based on methods we employ to screen out robotic usage. PMC information (aggregated monthly) is also similarly screened of robotic usage.
Various methods are used to distinguish robotic usage. For example, Google automatically scans articles to add to its search index and identifies itself as robotic; other services might not clearly identify themselves as robotic, or they are new or unknown as robotic. Because this activity can be misinterpreted as human readership, data may be re-processed periodically to reflect an improved understanding of robotic activity. Because of these factors, readers should consider usage information illustrative but subject to change.