|Detection of DC-STAMP in Human Mature Dendritic Cells by Flow Cytometry. Human mature dendritic cells derived from CD14+ Human peripheral blood mononuclear cells (PBMCs) treated with 20 ng/mL Recombinant Human IL-4 (Catalog # 204-IL) and 50 ng/mL Recombinant Human GM-CSF (Catalog # 215-GM) for 6 days then treated with 20 ng/mL LPS, 20 ng/mL Recombinant Human TNF-alpha (Catalog # 210-TA), and 20 ng/mL Recombinant Human IL-1 beta (Catalog # 201-LB) for 24 hours were stained with Mouse Anti-Human CD83 Fluorescein-conjugated Monoclonal Antibody (Catalog # FAB1774F) and either (A) Mouse IgG2B Isotype Control (Catalog # MAB0041) or (B) Mouse Anti-Human DC-STAMP Monoclonal Antibody (Catalog # MAB7824) followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B).|
DC-STAMP, also known as TM7SF4, is an approximately 50 kDa glycoprotein with seven transmembrane segments. It is expressed on the surface of dendritic cells and monocytes as well as on osteoclasts and their progenitors. DC-STAMP binds CTGF/CCN2 and cooperates with TRANCE/RANK L for inducing osteoclast differentiation and fusion into multinucleated cells. It contains a cytoplasmic immunoreceptor tyrosine-based inhibitory motif (ITIM) and associates with FC gamma RIII/CD16. Within aa 314-376, human DC-STAMP shares approximately 75% aa sequence identity with mouse and rat DC-STAMP.
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