| 货号 | AF588-SP |
| 别名 | Iboctadekin; IFN-gamma-inducing factor; IGIF; IGIFIL-1 gamma; IL-18MGC12320; IL-1F4; IL1F4iboctadekin; IL-1g; Interferon gamma-inducing factor; interleukin 18 (interferon-gamma-inducing factor); Interleukin-1 gamma; interleukin-18 | 全称 | Interleukin 18 |
| 反应种属 | Porcine |
| 应用 | Western Blot(0.1 µg/mL) Immunocytochemistry(5-15 µg/mL) |
| 目标/特异性 | Detects porcine IL‑18/IL‑1F4 in direct ELISAs and Western blots. In direct ELISAs, approximately 30% cross‑reactivity with recombinant human IL-18 is observed and 10% cross-reactivity with recombinant rat IL‑18 and recombinant mouse IL‑18 is observed. |
| 使用方法 | Western Blot: 0.1 µg/mL Immunocytochemistry: 5-15 µg/mL |
| 来源 | Reconstitute at 0.2 mg/mL in sterile PBS. |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 3606 (Human); 16173 (Mouse); 29197 (Rat); 397057 (Porcine); 574151 (Primate) |
| 纯化方式 | Antigen Affinity-purified |
| 免疫原 | E. coli-derived recombinant porcine IL‑18/IL‑1F4 |
| 生物活性 | Porcine |
| 标记 | Unconjugated |
| 溶解方法 | Reconstitute at 0.2 mg/mL in sterile PBS. |
| 背景 | Interleukin-18 (IL-18), also known as IL-1F4 and IFN-gamma inducing factor (IGIF), is a member of the IL-1 family of cytokines and is a key molecule in the innate immune response (1). Porcine IL-18 is synthesized as a 24 kDa proprotein that contains a 35 amino acid (aa) propeptide and a 157 aa mature region (2). Under inflammatory conditions, the propeptide is cleaved by Caspase-1 in the cytoplasm to liberate the mature nonglycosylated 18 kDa monomeric IL-18 (3, 4). Mature porcine IL-18 shares 88% aa sequence identity with canine and feline IL-18 and 61%‑76% with human, mouse, rat, and rhesus IL-18. IL-18 is secreted by a variety of cell types including macrophages, dendritic cells, and epithelial cells (1, 5). Circulating mature IL-18 is sequestered by soluble IL-18 binding proteins (IL-18 BP) that inhibit IL-18 bioactivity (6). IL-18 interacts with the widely expressed IL-18 R alpha which then recruits the signaling subunit IL-18 R beta (7, 8). The IL-1 family member IL-1F7 also binds to IL-18 R alpha but does not recruit IL-18 R beta or induce signaling (9). IL-1F7 binds IL-18 BP and enhances its neutralizing effect on IL-18 activity (9). IL-18 synergizes with other cytokines to activate NK, Th1, and Th17 cells and to increase the production of IFN-gamma (1, 5, 10, 11, 12). IL-18 can also promote Th2 cytokine release which reduces the effectiveness of antiviral responses (13, 14). Increased levels of active IL‑18 contribute to the severity of autoimmunity and hypertension, while deficiency of IL-18 results in symptoms of metabolic syndrome (1, 5, 15, 16). In cancer, IL-18 stimulates Th1 and NK cells to target tumor cells, but it can also promote angiogenesis, metastasis, and tumor cell immune evasion (11). |
| 运输条件 | Blue Ice |
| 存放说明 | 4℃ |
| 参考文献 |
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IL‑18/IL‑1F4 in Porcine PBMCs. IL‑18/IL‑1F4 was detected in immersion fixed porcine peripheral blood mononuclear cells (PBMCs) using Goat Anti-Porcine IL‑18/IL‑1F4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF588) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Non-adherent Cells. |
