PMID- 11594770 OWN - NLM STAT- MEDLINE DCOM- 20011207 LR - 20061115 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 288 IP - 1 DP - 2001 Oct 19 TI - Molecular cloning and characterization of mouse Tspan-3, a novel member of the tetraspanin superfamily, expressed on resting dendritic cells. PG - 178-83 AB - Dendritic cells (DCs) are the most potent antigen-presenting cells and play an essential role for triggering T-cell-mediated immune responses. In search for novel cell surface molecules expressed on DCs involved in T cell priming by representational differential analysis, we identified a mouse homologue of Tspan-3 (mTspan-3), a novel member of the tetraspanin superfamily. The mTspan-3 consists of four hydrophobic, putative transmembrane regions, forming a small and a large extracellular loop, with short intracellular amino and carboxil tails. Although the mTspan-3 is expressed on a variety of immune cell types including resting DCs, its expression on DCs is downregulated during activation induced by cross-linking CD40 with anti-CD40 monoclonal antibody. These results suggest that mTspan-3 may be involved in the function of DCs in association with T cell stimulation. CI - Copyright 2001 Academic Press. FAU - Tokoro, Y AU - Tokoro Y AD - Department of Immunology, Institute of Basic Medical Sciences, Institute of Clinical Medicine, 1-1-1 Tennodai, Tsukuba Science City, Ibaraki 305-8575, Japan. FAU - Shibuya, K AU - Shibuya K FAU - Osawa, M AU - Osawa M FAU - Tahara-Hanaoka, S AU - Tahara-Hanaoka S FAU - Iwama, A AU - Iwama A FAU - Kitamura, T AU - Kitamura T FAU - Nakauchi, H AU - Nakauchi H FAU - Shibuya, A AU - Shibuya A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Membrane Proteins) RN - 0 (RNA, Messenger) SB - IM MH - Amino Acid Sequence MH - Animals MH - Cell Line MH - Cells, Cultured MH - Cloning, Molecular MH - Dendritic Cells/*immunology MH - Down-Regulation MH - Lymphocyte Activation MH - Membrane Proteins/chemistry/*genetics/*metabolism MH - Mice MH - Mice, Inbred C57BL MH - Molecular Sequence Data MH - Protein Structure, Tertiary MH - RNA, Messenger/biosynthesis MH - Sequence Homology, Amino Acid MH - T-Lymphocytes/immunology MH - Tissue Distribution MH - Transcription, Genetic EDAT- 2001/10/12 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/10/12 10:00 PHST- 2001/10/12 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/10/12 10:00 [entrez] AID - S0006-291X(01)95742-0 [pii] AID - 10.1006/bbrc.2001.5742 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2001 Oct 19;288(1):178-83. doi: 10.1006/bbrc.2001.5742.