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Identification of a novel dendritic cell surface antigen defined by carbohydrate specific CD24 antibody cross-reactivity. 1996

L A Williams, and A D McLellan, and K L Summers, and R V Sorg, and D B Fearnley, and D N Hart
Haemetology Immunology Research Group, Christchurch School of Medicine, New Zealand.

Dendritic cells (DC) are characterized as leucocytes that lack mature lineage specific markers and stimulate naive T-lymphocyte proliferation in vitro and in vivo. The mouse heat stable antigen (HSA) participates in T lymphocyte co-stimulation and is expressed by DC isolated from thymus, skin and spleen. The human HSA homologue, CD24, is predominantly expressed by B lymphocytes and granulocytes, but its expression on DC has not been studied in detail. CD24 clearly participates in B-lymphocyte signalling but co-stimulatory activity for T lymphocytes has not yet been described. We have examined the expression of CD24 on human peripheral blood DC populations isolated directly or following in vitro culture. The CD24 antigen was absent from blood DC however, cross-reactive sialylated carbohydrate epitopes were detected on DC with some CD24 monoclonal antibodies (mAb). These CD24 mAb define a protein surface antigen, which is expressed by an immature or resting subpopulation of peripheral blood DC and is down-regulated following activation differentiation in vitro.

UI MeSH Term Description Entries
D008562 Membrane Glycoproteins Glycoproteins found on the membrane or surface of cells. Cell Surface Glycoproteins,Surface Glycoproteins,Cell Surface Glycoprotein,Membrane Glycoprotein,Surface Glycoprotein,Glycoprotein, Cell Surface,Glycoprotein, Membrane,Glycoprotein, Surface,Glycoproteins, Cell Surface,Glycoproteins, Membrane,Glycoproteins, Surface,Surface Glycoprotein, Cell,Surface Glycoproteins, Cell
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D003429 Cross Reactions Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen. Cross Reaction,Reaction, Cross,Reactions, Cross
D003713 Dendritic Cells Specialized cells of the hematopoietic system that have branch-like extensions. They are found throughout the lymphatic system, and in non-lymphoid tissues such as SKIN and the epithelia of the intestinal, respiratory, and reproductive tracts. They trap and process ANTIGENS, and present them to T-CELLS, thereby stimulating CELL-MEDIATED IMMUNITY. They are different from the non-hematopoietic FOLLICULAR DENDRITIC CELLS, which have a similar morphology and immune system function, but with respect to humoral immunity (ANTIBODY PRODUCTION). Dendritic Cells, Interdigitating,Interdigitating Cells,Plasmacytoid Dendritic Cells,Veiled Cells,Dendritic Cells, Interstitial,Dendritic Cells, Plasmacytoid,Interdigitating Dendritic Cells,Interstitial Dendritic Cells,Cell, Dendritic,Cell, Interdigitating,Cell, Interdigitating Dendritic,Cell, Interstitial Dendritic,Cell, Plasmacytoid Dendritic,Cell, Veiled,Cells, Dendritic,Cells, Interdigitating,Cells, Interdigitating Dendritic,Cells, Interstitial Dendritic,Cells, Plasmacytoid Dendritic,Cells, Veiled,Dendritic Cell,Dendritic Cell, Interdigitating,Dendritic Cell, Interstitial,Dendritic Cell, Plasmacytoid,Interdigitating Cell,Interdigitating Dendritic Cell,Interstitial Dendritic Cell,Plasmacytoid Dendritic Cell,Veiled Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000939 Epitopes Sites on an antigen that interact with specific antibodies. Antigenic Determinant,Antigenic Determinants,Antigenic Specificity,Epitope,Determinant, Antigenic,Determinants, Antigenic,Specificity, Antigenic
D015703 Antigens, CD Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation. CD Antigen,Cluster of Differentiation Antigen,Cluster of Differentiation Marker,Differentiation Antigens, Leukocyte, Human,Leukocyte Differentiation Antigens, Human,Cluster of Differentiation Antigens,Cluster of Differentiation Markers,Antigen Cluster, Differentiation,Antigen, CD,CD Antigens,Differentiation Antigen Cluster,Differentiation Marker Cluster,Marker Cluster, Differentiation
D051927 CD24 Antigen A GPI-linked cell adhesion protein originally identified as a heat stable antigen in mice. It mediates antigen-dependent activation and proliferation of B-CELLS. It is also involved in METASTASIS and is highly expressed in many NEOPLASMS. Antigens, CD24,CD24 Antigens,Heat-Stable Antigen CD24,Nectadrin,Antigen, CD24,CD24, Heat-Stable Antigen,Heat Stable Antigen CD24

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