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View LargerRecombinant Human GM-CSF Protein (Catalog # 215-GM) has a molecular weight (MW) of 14.1 kDa as analyzed by SEC-MALS, suggesting that this protein is a monomer.
View LargerRecombinant Human GM-CSF (Catalog # 215-IL) stimulates cell proliferation of the TF-1 human erythroleukemic cell line. The ED50 for this effect is 6-30 pg/mL.
View Larger1 μg/lane of Recombinant Human GM-CSF was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing a single band at 14 kDa.
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
215-GM
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein. |
| Reconstitution | Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
215-GM/CF
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 100 μg/mL in PBS. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Recombinant Human GM-CSF Protein Summary
Product Specifications
Ala18-Glu144
Analysis
Background: GM-CSF
GM‑CSF was initially characterized as a factor that can support the in vitro colony formation of granulocyte‑macrophage progenitors. It is also a growth factor for erythroid, megakaryocyte, and eosinophil progenitors. GM‑CSF is produced by a number of different cell types (including T cells, B cells, macrophages, mast cells, endothelial cells, fibroblasts, and adipocytes) in response to cytokine or inflammatory stimuli. On mature hematopoietic cells, GM‑CSF is a survival factor for and activates the effector functions of granulocytes, monocytes/macrophages, and eosinophils (1, 2). GM‑CSF promotes a Th1 biased immune response, angiogenesis, allergic inflammation, and the development of autoimmunity (3‑5). It shows clinical effectiveness in ameliorating chemotherapy‑induced neutropenia, and GM‑CSF transfected tumor cells are utilized as cancer vaccines (6, 7). The 22 kDa glycosylated GM‑CSF, similar to IL‑3 and IL‑5, is a cytokine with a core of four bundled
alpha -helices (8‑12). Mature human GM‑CSF shares 63%‑70% amino acid sequence identity with canine, feline, porcine, and rat GM‑CSF and 54% with mouse GM‑CSF. GM‑CSF exerts its biological effects through a heterodimeric receptor complex composed of GM‑CSF R alpha /CD116 and the signal transducing common beta chain (CD131) which is also a component of the high‑affinity receptors for IL‑3 and IL‑5 (13, 14). In addition, GM‑CSF binds a naturally occurring soluble form of GM‑CSF R alpha (15). Human GM‑CSF is active on canine and feline cells but not on murine cells (16‑18).
- Martinez-Moczygemba, M. and D.P. Huston (2003) J. Allergy Clin. Immunol. 112:653.
- Barreda, D.R. et al. (2004) Dev. Comp. Immunol. 28:509.
- Eksioglu, E.A. et al. (2007) Exp. Hematol. 35:1163.
- Cao, Y. (2007) J. Clin. Invest. 117:2362.
- Fleetwood, A.J. et al. (2005) Crit. Rev. Immunol. 25:405.
- Heuser, M. et al. (2007) Semin. Hematol. 44:148.
- Hege, K.M. et al. (2006) Int. Rev. Immunol. 25:321.
- Kaushansky, K. et al. (1992) Biochemistry 31:1881.
- Diederichs, K. et al. (1991) Science 254:1779.
- Cantrell, M.A. et al. (1985) Proc. Natl. Acad. Sci. 82:6250.
- Lee, F. et al. (1985) Proc. Natl. Acad. Sci. 82:4360.
- Wong, G.G. et al. (1985) Science 228:810.
- Onetto-Pothier, N. et al. (1990) Blood 75:59.
- Hayashida, K. et al. (1990) Proc. Natl. Acad. Sci. 87:9655.
- Pelley, J.L. et al. (2007) Exp. Hematol. 35:1483.
- Hogge, G.S. et al. (1990) Cancer Gene Ther. 6:26.
- Sprague, W.S. et al. (2005) J. Comp. Pathol. 133:136.
- Shanafelt, A.B. et al. (1991) J. Biol. Chem. 266:13804.
参考图片
1 μg/lane of Recombinant Human GM-CSF was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing a single band at 14 kDa.
Recombinant Human GM-CSF (Catalog # 215-IL) stimulates cell proliferation of the
TF-1 human erythroleukemic cell line. The ED50 for this effect is typically 6-30 pg/mL.