| Literature DB >> 18599440 |
Shuo-Wang Qiao1, Kanna Kobayashi, Finn-Eirik Johansen, Ludvig M Sollid, Jan Terje Andersen, Edgar Milford, Derry C Roopenian, Wayne I Lencer, Richard S Blumberg.
Abstract
The neonatal Fc receptor for IgG (FcRn) is a distant member of the MHC class I protein family. It binds IgG and albumin in a pH-dependent manner and protects these from catabolism by diverting them from a degradative fate in lysosomes. In addition, FcRn-mediated IgG transport across epithelial barriers is responsible for the transmission of IgG from mother to infant and can also enhance IgG-mediated antigen uptake across mucosal epithelia. We now show a previously undescribed role for FcRn in mediating the presentation of antigens by dendritic cells when antigens are present as a complex with antibody by uniquely directing multimeric immune complexes, but not monomeric IgG, to lysosomes.Entities:
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Year: 2008 PMID: 18599440 PMCID: PMC2453734 DOI: 10.1073/pnas.0801717105
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205