| 货号 | PRD216-01 |
| 简介 | Supplied as ready-to-use 5 ug protein balls |
| 别名 | colony stimulating factor 1 (macrophage); CSF1; CSF-1; Lanimostim; macrophage colony stimulating factor; macrophage colony-stimulating factor 1; MCSF; M-CSF; MCSFlanimostim; MGC31930 | 全称 | Macrophage Colony Stimulating Factor |
| 来源 | E. coli-derived Glu33 - Ser190, with an N-terminal Met |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 1435 (Human); 12977 (Mouse) |
| 内毒素水平 | <0.10 EU per 1 μg of the protein by the LAL method. |
| 生物活性 | Measured in a cell proliferation assay using M‑NFS‑60 mouse myelogenous leukemia lymphoblast cells. Nakoinz, I. et al. (1990) J. Immunol. 145:860. The ED50 for this effect is typically 0.5-1.5 ng/mL. |
| 溶解方法 | For a stock solution, reconstitute at 50-500 μg/mL in sterile PBS, or simply roll ProDot |
| 背景 | M-CSF, also known as CSF-1, is a four-alpha-helical-bundle cytokine that is the primary regulator of macrophage survival, proliferation and differentiation. M-CSF is also essential for the survival and proliferation of osteoclast progenitors. M-CSF also primes and enhances macrophage killing of tumor cells and microorganisms, regulates the release of cytokines and other inflammatory modulators from macrophages, and stimulates pinocytosis. M-CSF increases during pregnancy to support implantation and growth of the decidua and placenta. Sources of M-CSF include fibroblasts, activated macrophages, endometrial secretory epithelium, bone marrow stromal cells and activated endothelial cells. The M-CSF receptor (c-fms) transduces its pleotropic effects and mediates its endocytosis. M-CSF mRNAs of various sizes occur. Full length human M-CSF transcripts encode a 522 amino acid (aa) type I transmembrane (TM) protein with a 464 aa extracellular region, a 21 aa TM domain, and a 37 aa cytoplasmic tail that forms a 140 kDa covalent dimer. Differential processing produces two proteolytically cleaved, secreted dimers. One is an N- and O- glycosylated 86 kDa dimer, while the other is modified by both glycosylation and chondroitin-sulfate proteoglycan (PG) to generate a 200 kDa subunit. Although PG-modified M-CSF can circulate, it may be immobilized by attachment to type V collagen. Shorter transcripts encode M-CSF that lack cleavage and PG sites and produce an N-glycosylated 68 kDa TM dimer and a slowly produced 44 kDa secreted dimer. Although forms may vary in activity and half-life, all contain the N-terminal 150 aa portion that is necessary and sufficient for interaction with the M-CSF receptor. The first 223 aa of mature human M-CSF shares 88%, 86%, 81% and 74% aa identity with corresponding regions of dog, cow, mouse and rat M-CSF, respectively. Human M-CSF is active in the mouse, but mouse M-CSF is reported to be species-specific. |
| Accession # | NP_757350 |
| 运输条件 | Blue Ice |
| N-terminal Sequence Analysis | Met |
| 预期分子量 | 18.5 (monomer) kDa |
| 存放说明 | 4℃ |
| 纯度 | >97%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
| 参考文献 |
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ProDots® Recombinant Human M-CSF stimulates cell proliferation of the M-NFS-60 mouse myelogenous luekemia lymphoblast cell line in a dose-dependent manner. The ED50 for this effect is typically 0.5-1.5 ng/mL. | |
1 μg/lane of ProDots® Recombinant Human M-CSF was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized with silver staining, showing bands at 19 kDa and |
