Human neonatal Fc receptor mediates transport of IgG into luminal secretions for delivery of antigens to mucosal dendritic cells

Masaru Yoshida, Steven M. Claypool, Jessica S. Wagner, Emiko Mizoguchi, Atsushi Mizoguchi, Derry C. Roopenian, Wayne I. Lencer, Richard S. Blumberg

Research output: Contribution to journalArticlepeer-review

Abstract

Mucosal secretions of the human gastrointestinal, respiratory, and genital tracts contain significant quantities of IgG. The mechanism by which IgG reaches luminal secretions and the function of IgG in these locations are unknown. Here, we find that the human neonatal Fc receptor (FcRn) is the vehicle that transports IgG across the intestinal epithelial barrier into the lumen where the IgG can bind cognate antigen. The FcRn can then recycle the IgG/antigen complex back across the intestinal barrier into the lamina propria for processing by dendritic cells and presentation to CD4+ T cells in regional organized lymphoid structures. These results explain how IgG is secreted onto mucosal surfaces and scavenges luminal antigens for recognition by the immune system.

Original languageEnglish (US)
Pages (from-to)769-783
Number of pages15
JournalImmunity
Volume20
Issue number6
DOIs
StatePublished - Jun 2004
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Infectious Diseases

Fingerprint

Dive into the research topics of 'Human neonatal Fc receptor mediates transport of IgG into luminal secretions for delivery of antigens to mucosal dendritic cells'. Together they form a unique fingerprint.

Cite this