PMID- 18582577 OWN - NLM STAT- MEDLINE DCOM- 20081003 LR - 20080721 IS - 0955-0674 (Print) IS - 0955-0674 (Linking) VI - 20 IP - 4 DP - 2008 Aug TI - Endosomal sorting of MHC class II determines antigen presentation by dendritic cells. PG - 437-44 LID - 10.1016/j.ceb.2008.05.011 [doi] AB - Dendritic cells (DCs) initiate primary immune responses by presenting pathogen-derived antigens in association with major histocompatibility Class II molecules (MHC II) to T cells. In DCs, MHC II is constitutively synthesized and loaded at endosomes with peptides from hydrolyzed endogenous proteins or exogenously acquired antigens. Whether peptide loaded MHC II (MHC II-p) is subsequently recruited to and stably expressed at the plasma membrane or degraded in lysosomes is determined by the status of the DC. In immature DCs, MHC II-p is ubiquitinated after peptide loading, driving its sorting to the luminal vesicles of multivesicular bodies. These luminal vesicles, and the MHC II-p they carry, are delivered to lysosomes for degradation. MHC II-p is inefficiently ubiquitinated in DCs that are activated by pathogens or inflammatory stimuli, thus allowing its transfer to and stable expression at the plasma membrane. FAU - van Niel, Guillaume AU - van Niel G AD - Institut Curie, Centre National de la Recherche Scientifique-Unite Mixte de Recherche 144, Paris 75248, France. Guillaume.van-Niel@Curie.fr FAU - Wubbolts, Richard AU - Wubbolts R FAU - Stoorvogel, Willem AU - Stoorvogel W LA - eng PT - Journal Article PT - Review DEP - 20080705 PL - England TA - Curr Opin Cell Biol JT - Current opinion in cell biology JID - 8913428 RN - 0 (Histocompatibility Antigens Class II) SB - IM MH - Animals MH - Antigen Presentation/*immunology MH - Dendritic Cells/*immunology MH - Endocytosis MH - Endosomes/*metabolism MH - Histocompatibility Antigens Class II/*immunology MH - Humans MH - Inflammation/immunology MH - Ubiquitination RF - 54 EDAT- 2008/06/28 09:00 MHDA- 2008/10/04 09:00 CRDT- 2008/06/28 09:00 PHST- 2008/03/11 00:00 [received] PHST- 2008/04/21 00:00 [revised] PHST- 2008/05/29 00:00 [accepted] PHST- 2008/06/28 09:00 [pubmed] PHST- 2008/10/04 09:00 [medline] PHST- 2008/06/28 09:00 [entrez] AID - S0955-0674(08)00107-5 [pii] AID - 10.1016/j.ceb.2008.05.011 [doi] PST - ppublish SO - Curr Opin Cell Biol. 2008 Aug;20(4):437-44. doi: 10.1016/j.ceb.2008.05.011. Epub 2008 Jul 5.