| 货号 | MAB617-SP |
| 别名 | CD154 antigen; CD154; CD40 antigen ligand; CD40 ligand; CD40-L; CD40LG; CD40LIGM; gp39; hCD40L; HIGM1; T-B cell-activating molecule; T-BAM; T-cell antigen Gp39; TNF-related activation protein; TNFSF5; TNFSF5IMD3; TRAP; TRAPtumor necrosis factor (ligand) superfamily, member 5 (hyper-IgM syndrome); tumor necrosis factor (ligand) superfamily member 5; Tumor necrosis factor ligand superfamily member 5 |
| 反应种属 | Human |
| 应用 | Western Blot(1 µg/mL) Flow Cytometry(0.25 µg/106cells) Immunohistochemistry(8-25 µg/mL) |
| 目标/特异性 | Detects human CD40 Ligand/TNFSF5 in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant human (rh) CD27 Ligand, rhCD30 Ligand, or recombinant mouse CD40 Ligand is observed. |
| 使用方法 | Western Blot: 1 µg/mL Flow Cytometry: 0.25 µg/106cells Immunohistochemistry: 8-25 µg/mL Blockade of Receptor-ligand Interaction: In a functional ELISA, 0.03-0.1 µg/mL of this antibody will block 50% of the binding of 2 ng/mL of biotinylated Recombinant Human CD40 Ligand to immobilized Recombinant Human CD40/TNFRSF5 Fc Chimera (Catalog # 1493‑CD) coated at 2 µg/mL (100 µL/well). At 1 μg/mL, this antibody will block >90% of the binding. |
| 来源 | Monoclonal Mouse IgG2B Clone # 40804 |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 959 (Human); 21947 (Mouse); 84349 (Rat) |
| 应用文献 | |
| R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions. Human gammadelta T lymphocytes induce robust NK cell-mediated antitumor cytotoxicity through CD137 engagement. | |
| 纯化方式 | Protein A or G purified from hybridoma culture supernatant |
| 免疫原 | E. coli-derived recombinant human CD40 Ligand/TNFSF5 Leu50-Leu261 Accession # P29965 |
| 内毒素水平 | <0.10 EU per 1 μg of the antibody by the LAL method. |
| 生物活性 | Human |
| 标记 | Unconjugated |
| 溶解方法 | Reconstitute at 0.5 mg/mL in sterile PBS. |
| 背景 | CD40 Ligand (CD40L), now renamed TNFSF5 but also known as CD154, TRAP and gp39, is a 34‑39 kDa type II transmembrane glycoprotein that belongs to the TNF superfamily (1‑3). Human CD40L is 261 amino acids (aa) in length and consists of a 22 aa cytoplasmic domain, a 24 aa transmembrane segment, and a 215 aa extracellular region that consists of multiple beta -strands and one N‑linked glycosylation site (4, 5). Although carbohydrates are present, they are not necessary for activity (6). As with other TNF superfamily members, CD40L will exist as a trimer, both as a membrane bound and soluble form (6‑8). The soluble form is 18 kDa in size and about 150 aa in length, and arises from intracellular proteolytic processing. As a trimer, the soluble form is bioactive (7‑9). Multiple mutations and alternate splice forms of CD40L exist, often associated with pathology and leading to truncated or nontrimerizable forms of CD40L (8). While CD40L is a ligand for CD40, the ligation of CD40L by CD40 initiates bidirectional signaling in both CD40 and CD40L expressing cells (10). The extracellular region of human CD40L is 99%, 88%, 86%, 82%, 75% and 75% aa identical to the extracellular regions of CD40L in rhesus monkey, bovine, porcine, canine, mouse and rat, respectively. CD40L binds to both CD40 and to integrin alpha IIb beta 3 (CD41) (3, 11). In the cell membrane, it also associates with a unique splice variant of CD28 (CD28i) that may facilitate CD40L signal transduction (12). CD40L is expressed by monocytes, NK cells, mast cells, basophils, smooth muscle cells, endothelial cells, dendritic cells, activated and resting B cells, plus activated platelets and CD4+ T cells (13, 14). CD40L ligation of CD40 on dendritic cells (DC) initiates DC maturation and differentiation. CD40L signaling into naïve B cells promotes germinal center formation and isotope switching. With IL-21, CD40L generates IgA plus IgG3; with IL-4, CD40L generates IgG1 secretion (14, 15). |
| 运输条件 | Blue Ice |
| 存放说明 | 4℃ |
| 参考文献 |
|
CD40 Ligand/TNFSF5 in Human Tonsil. CD40 Ligand/TNFSF5 was detected in immersion fixed paraffin-embedded sections of human tonsil using Mouse Anti-Human CD40 Ligand/TNFSF5 Monoclonal Antibody (Catalog # MAB617) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Mouse HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS002) and counterstained with hematoxylin (blue). Specific staining was localized to lymphocytes. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections. |
