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  • Title: DEC-205 expression on migrating dendritic cells in afferent lymph.
    Author: Gliddon DR, Hope JC, Brooke GP, Howard CJ.
    Journal: Immunology; 2004 Mar; 111(3):262-72. PubMed ID: 15009426.
    Abstract:
    Previous studies have identified a 210 000-molecular weight molecule expressed at a high level on the surface of dendritic cells (DCs) in afferent lymph of cattle and evident on cells with the morphology of DCs in lymphoid tissues. Expression is either absent from other immune cells or is present at a lower level. The molecular weight and cellular distribution suggested that the molecule, called bovine WC6 antigen (workshop cluster), might be an orthologue of human DEC-205 (CD205). To establish whether this was the case, the open reading frame of bovine DEC-205 was amplified, by polymerase chain reaction, from thymic cDNA (accession no. AY264845). The cDNA sequence of bovine DEC-205 had 86% and 78% nucleic acid identity with human and mouse molecules, respectively. COS-7 cells transfected with a plasmid containing the cattle DEC-205 coding region expressed a molecule that stained with WC6-specific monoclonal antibody, showing that ruminant WC6 is an orthologue of DEC-205. Two-colour flow cytometry of mononuclear cells from afferent lymph draining cattle skin, and from blood, confirmed the high level of expression on large cells in lymph that were uniformly DC-LAMP positive and major histocompatibility complex class II positive. Within this DEC-205+ DC-LAMP+ population were subpopulations of cells that expressed the mannose receptor or SIRPalpha. The observations imply that DCs in afferent lymph are all DEC-205high, but not a uniform population of homogeneous mature DCs.
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