| 货号 | AF-308-SP |
| 别名 | FL; Flt3 ligand; Flt-3 Ligand; Flt3L; FLT3LG; fms-related tyrosine kinase 3 ligand; SL cytokine | 全称 | fms-like Tyrosine Kinase 3 Ligand |
| 反应种属 | Human |
| 应用 | Western Blot,Neutralization |
| 目标/特异性 | Detects human Flt‑3 in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant mouse Flt-3 is observed. |
| 使用方法 | Western Blot: 0.1 µg/mL Neutralization: Measured by its ability to neutralize Flt‑3 Ligand-induced proliferation in BaFlt3 mouse pro‑B cell line transfected with mouse Flt‑3. Hannum, C. et al. (1994) Nature 368:643. The Neutralization Dose (ND50) is typically 0.02‑0.06 µg/mL in the presence of 5 ng/mL Recombinant Human Flt‑3 Ligand. |
| 来源 | Polyclonal Goat IgG |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 2323 (Human); 14256 (Mouse); 493796 (Feline) |
| 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. Creation of intercellular bonds by anchoring protein ligands to membranes using the diphtheria toxin T domain. | |
| 纯化方式 | Antigen Affinity-purified |
| 免疫原 | S. frugiperda insect ovarian cell line Sf 21-derived recombinant human Flt-3 Ligand Thr27-Pro185 Accession # AAA17999 |
| 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 0.2 mg/mL in sterile PBS. |
| 背景 | Flt-3 Ligand, also known as FL, is an alpha -helical cytokine that promotes the differentiation of multiple hematopoietic cell lineages (1‑3). Mature human Flt-3 Ligand consists of a 158 amino acid (aa) extracellular domain (ECD) with a cytokine-like domain and a juxtamembrane tether region, a 21 aa transmembrane segment, and a 30 aa cytoplasmic tail (4‑7). Within the ECD, human Flt-3 Ligand shares 71% and 65% aa sequence identity with mouse and rat Flt-3 Ligand, respectively. Human and mouse Flt-3 Ligand show cross-species activity (4‑6). Flt-3 Ligand is expressed as a noncovalently-linked dimer by T cells and bone marrow and thymic fibroblasts (1, 8). Each 36 kDa chain carries approximately 12 kDa of N- and O-linked carbohydrates (8). Alternate splicing and proteolytic cleavage of the transmembrane form can generate a soluble 30 kDa fragment that includes the cytokine domain (4, 8). Alternate splicing of human Flt-3 Ligand also generates membrane-associated isoforms that contain either a truncated cytoplasmic tail or an 85 aa substitution following the cytokine domain (4, 5, 8). Both transmembrane and soluble Flt-3 Ligand signal through the tyrosine kinase receptor Flt-3/Flk-2 (3, 4, 6, 7). Flt-3 Ligand induces the expansion of monocytes and immature dendritic cells as well as early B cell lineage differentiation (2, 9). It synergizes with IL-3, GM-CSF, and SCF to promote the mobilization and myeloid differentiation of hematopoietic stem cells (4‑6). It cooperates with IL-2, -6, -7, and -15 to induce NK cell development and with IL-3, -7, and -11 to induce terminal B cell maturation (1, 10). Animal studies also show Flt‑3 Ligand to reduce the severity of experimentally induced allergic inflammation (11). |
| 运输条件 | Blue Ice |
| 存放说明 | 4℃ |
| 参考文献 |
|
Cell Proliferation Induced by Flt‑3 Ligand and Neutralization by Human Flt‑3 Ligand Antibody. Recombinant Human Flt‑3 Ligand (Catalog # 308-FK) stimulates proliferation in BaFlt3 mouse pro‑B cell line transfected with mouse Flt‑3 in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human Flt‑3 Ligand (5 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human Flt‑3 Ligand Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-308-NA). The ND50 is typically 0.02-0.06 µg/mL. |
