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Alpha anomers of iGb3 and Gb3 stimulate cytokine production by natural killer T cells. 2009

Ning Yin, and Xiangtian Long, and Randal D Goff, and Dapeng Zhou, and Carlos Cantu, and Jochen Mattner, and Pierre Saint Mezard, and Luc Teyton, and Albert Bendelac, and Paul B Savage
Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, USA.

Natural killer T cells (NKT cells) respond to presentation of specific glycolipids with release of a variety of proinflammatory and immunomodulatory cytokines. The repertoire of glycolipid antigens for these cells includes alpha-glycosylceramides, alpha-glycosyldiacylglycerols, and the triglycosylceramide iGb3. Two features of iGb3 set it apart from these other antigens: (i) three sugars are required for stimulation and (ii) the glycosidic bond between ceramide and the proximal sugar is beta in iGb3, whereas it is alpha in other antigens. We have synthesized the alpha versions of iGb3 and Gb3 and demonstrate that they are effective antigens for NKT cells and that they do not require lysosomal processing to the monoglycosylceramides for stimulation. These triglycosylceramides constitute a new class of antigen that stimulates NKT cells comparably to monoglycosylceramides.

UI MeSH Term Description Entries
D007376 Interleukin-2 A soluble substance elaborated by antigen- or mitogen-stimulated T-LYMPHOCYTES which induces DNA synthesis in naive lymphocytes. IL-2,Lymphocyte Mitogenic Factor,T-Cell Growth Factor,TCGF,IL2,Interleukin II,Interleukine 2,RU 49637,RU-49637,Ro-23-6019,Ro-236019,T-Cell Stimulating Factor,Thymocyte Stimulating Factor,Interleukin 2,Mitogenic Factor, Lymphocyte,RU49637,Ro 23 6019,Ro 236019,Ro236019,T Cell Growth Factor,T Cell Stimulating Factor
D008213 Lymphocyte Activation Morphologic alteration of small B LYMPHOCYTES or T LYMPHOCYTES in culture into large blast-like cells able to synthesize DNA and RNA and to divide mitotically. It is induced by INTERLEUKINS; MITOGENS such as PHYTOHEMAGGLUTININS, and by specific ANTIGENS. It may also occur in vivo as in GRAFT REJECTION. Blast Transformation,Blastogenesis,Lymphoblast Transformation,Lymphocyte Stimulation,Lymphocyte Transformation,Transformation, Blast,Transformation, Lymphoblast,Transformation, Lymphocyte,Activation, Lymphocyte,Stimulation, Lymphocyte
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
D005915 Globosides Glycosphingolipids containing N-acetylglucosamine (paragloboside) or N-acetylgalactosamine (globoside). Globoside is the P antigen on erythrocytes and paragloboside is an intermediate in the biosynthesis of erythrocyte blood group ABH and P 1 glycosphingolipid antigens. The accumulation of globoside in tissue, due to a defect in hexosaminidases A and B, is the cause of Sandhoff disease. Cytolipins,Lacto-N-neotetraosylceramide,Lacto-N-tetraosylceramide,Lactoneotetraosylceramide,Lacto N neotetraosylceramide,Lacto N tetraosylceramide
D006825 Hybridomas Cells artificially created by fusion of activated lymphocytes with neoplastic cells. The resulting hybrid cells are cloned and produce pure MONOCLONAL ANTIBODIES or T-cell products, identical to those produced by the immunologically competent parent cell. Hybridoma
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014281 Trihexosylceramides Glycosphingolipids which contain as their polar head group a trisaccharide (galactose-galactose-glucose) moiety bound in glycosidic linkage to the hydroxyl group of ceramide. Their accumulation in tissue, due to a defect in ceramide trihexosidase, is the cause of angiokeratoma corporis diffusum (FABRY DISEASE). Ceramide Trihexosides,Trihexosyl Ceramides,Ceramides, Trihexosyl,Trihexosides, Ceramide
D049231 Saposins A group of four homologous sphingolipid activator proteins that are formed from proteolytic cleavage of a common protein precursor molecule referred to as prosaposin. Saposin,Co-beta-Glucosidase,Coglucosidase,Gaucher Activator Protein,Glucosylceramidase Activator,SAP-1 Sphingolipid Activator,SAP-A Protein,SAP-C Protein,SAP-D Protein,Saposin A,Saposin B,Saposin C,Saposin D,Sphingolipid Activator Protein 1,Sphingolipid Activator Protein 2,Sphingolipid Activator Protein-1,Testibumin,beta-Glucosidase Activator Protein,beta-Glucosidase Stimulating Protein,Co beta Glucosidase,SAP 1 Sphingolipid Activator,SAP A Protein,SAP C Protein,SAP D Protein,Sphingolipid Activator, SAP-1,beta Glucosidase Activator Protein,beta Glucosidase Stimulating Protein
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D055610 Antigens, CD1d A major histocompatibility complex class I-like protein that contains an IMMUNOGLOBULIN C1-SET DOMAIN. It plays a unique role in the presentation of lipid ANTIGENS to NATURAL KILLER T-CELLS. CD1d Antigen,Cd1d Molecule,Antigen, CD1d,CD1d Antigens

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