| 货号 | ACFP293 |
| 别名 | MVCD1; VAS; vascular endothelial growth factor A; Vascular permeability factor; Vasculotropin; VEGFA; VEGF-A; VEGFMGC70609; VPF; VPFvascular endothelial growth factor | 全称 | Vascular Endothelial Growth Factor |
| 反应种属 | Human |
| 来源 | Spodoptera frugiperda,Sf 9 (baculovirus)-derived Met1-Arg191 Produced in an animal component free process (ACFP). |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 7422 (Human); 22339 (Mouse); 83785 (Rat); 281572 (Bovine); 403802 (Canine); 493845 (Feline); 30682 (Zebrafish) |
| 内毒素水平 | <0.01 EU per 1 μg of the protein by the LAL method. |
| 生物活性 | Measured in a cell proliferation assay using HUVEC human umbilical vein endothelial cells. Conn, G. et al. (1990) Proc. Natl. Acad. Sci. USA 87:1323. The ED50 for this effect is typically 1-6 ng/mL. The specific activity of recombinant human VEGF is approximately 1.7 x 103 U/μg, which is calibrated against recombinant human VEGF 165 WHO Standard (NIBSC code: 02/286). |
| 溶解方法 | Reconstitute at 100 μg/mL in sterile PBS. Alternatively, reconstitute at 500 μg/mL in sterile 4 mM HCl. |
| 背景 | Vascular endothelial growth factor (VEGF or VEGF‑A), also known as vascular permeability factor (VPF), is a potent mediator of both angiogenesis and vasculogenesis in the fetus and adult (1 ‑ 3). It is a member of the PDGF family that is characterized by the presence of eight conserved cysteine residues and a cystine knot structure (4). Humans express alternately spliced isoforms of 121, 145, 165, 183, 189, and 206 amino acids (aa) in length (4). VEGF165 appears to be the most abundant and potent isoform, followed by VEGF121 and VEGF189 (3, 4). Isoforms other than VEGF121 contain basic heparin-binding regions and are not freely diffusible (4). Human VEGF165 shares 88% aa sequence identity with corresponding regions of mouse and rat, 96% with porcine, 95% with canine, and 93% with feline, equine and bovine VEGF, respectively. VEGF binds the type I transmembrane receptor tyrosine kinases VEGF R1 (also called Flt‑1) and VEGF R2 (Flk-1/KDR) on endothelial cells (4). Although VEGF affinity is highest for binding to VEGF R1, VEGF R2 appears to be the primary mediator of VEGF angiogenic activity (3, 4). VEGF165 binds the semaphorin receptor, Neuropilin‑1 and promotes complex formation with VEGF R2 (5). VEGF is required during embryogenesis to regulate the proliferation, migration, and survival of endothelial cells (3, 4). In adults, VEGF functions mainly in wound healing and the female reproductive cycle (3). Pathologically, it is involved in tumor angiogenesis and vascular leakage (6, 7). Circulating VEGF levels correlate with disease activity in autoimmune diseases such as rheumatoid arthritis, multiple sclerosis and systemic lupus erythematosus (8). VEGF is induced by hypoxia and cytokines such as IL-1, IL-6, IL-8, oncostatin M and TNF-alpha (3, 4, 9). |
| Accession # | NP_001165097 |
| 运输条件 | Blue Ice |
| N-terminal Sequence Analysis | Ala27 |
| 预期分子量 | 19.2 (monomer) kDa |
| SDS-PAGE | 19-21 kDa, reducing conditions |
| 存放说明 | -20℃ |
| 纯度 | >97%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
| 参考文献 |
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