| 货号 | MAB1191-SP |
| 别名 | IL18BP; IL-18BP; IL18BPa; interleukin 18 binding protein; interleukin-18-binding protein; MC51L-53L-54L homolog gene product; tadekinig-alfa | 全称 | Interleukin 18 Binding Protein Isoform a |
| 反应种属 | Human |
| 应用 | Neutralization |
| 目标/特异性 | Detects human IL-18 BPa in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant mouse (rm) IL-18 BPc or rmIL-18 BPd is observed. |
| 使用方法 | Neutralization: Measured by its ability to neutralize IL‑18 BPa inhibition of IL‑18/IL‑1F4-induced IFN‑ gamma secretion in the KG‑1 human acute myelogenous leukemia cell line. The Neutralization Dose (ND50) is typically 5-20 µg/mL in the presence of 1 µg/mL Recombinant Human IL‑18 BPa Fc Chimera, 40 ng/mL Recombinant Human IL‑18/IL‑1F4, and 20 ng/mL Recombinant Human TNF‑ alpha. |
| 来源 | Monoclonal Mouse IgG1 Clone # 136007 |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 10068 (Human) |
| 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. Toll-like receptor 8 agonist and bacteria trigger potent activation of innate immune cells in human liver. | |
| 纯化方式 | Protein A or G purified from hybridoma culture supernatant |
| 免疫原 | Mouse myeloma cell line NS0-derived recombinant human IL-18 BPa Thr29-Gly192 Accession # AAD17190 |
| 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 | Interleukin 18 binding protein (IL-18 BP or IL-18 BPa) is a secreted glycoprotein, which functions as an IL-18 antagonist by binding to IL-18 and blocking its biological activity. IL‑18 BPa bears no amino acid sequence homology to the membrane-associated IL-18 and IL-1 receptor proteins. The gene for human IL-18 BPa has been localized to chromosome 11q13. It encodes for at least four isoforms by alternative splicing. The IL-18 BP isoforms a and c each contain one immunoglobulin (Ig)-like C2-type domain while isoforms b and d lack a complete Ig domain. The complete Ig domain has been shown to be essential to the binding and neutralizing properties of the binding proteins. Two isoforms of mouse IL18 BP (c and d) containing the complete Ig domain have also been isolated and shown to neutralize IL-18 bioactivity. Human and mouse IL-18 BPa share approximately 61% amino acid sequence identity. Several poxviruses also encode proteins with sequence similarity to the human and mouse IL-18 BPa. Viral IL-18 BPs have been shown to bind and inhibit IL-18 responses and may be involved in modulating host immune responses. The expression of IL-18 BP is markedly upregulated by IFN-gamma, suggesting that IL-18 activity is modulated by a negative feedback mechanism mediated by IL-18 BP. |
| 运输条件 | Blue Ice |
| 存放说明 | 4℃ |
| 参考文献 |
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IL‑18 BPa Inhibition of IL‑18/IL‑1F4-induced IFN‑ gamma Secretion and Neutralization by Human IL‑18 BPa Antibody. Recombinant Human IL‑18 BPa Fc Chimera (Catalog # 119-BP) inhibits Recombinant Human IL‑18/IL‑1F4 induced IFN‑ gamma secretion in the KG‑1 human acute myelogenous leukemia cell line in a dose-dependent manner (orange line), as measured by the Human IFN‑ gamma Quantikine ELISA Kit (Catalog # DIF50). Inhibition of Recombinant Human IL‑18/IL‑1F4 (40 ng/mL) activity elicited by Recombinant Human IL‑18 BPa Fc Chimera (1 µg/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Human IL‑18 BPa Monoclonal Antibody (Catalog # MAB1191). The ND50 is typically 5‑20 µg/mL. |
