Human G-CSF Recombinant Protein #48713
Product Information
Storage
Once in solution, store at 4°C and use within 1 month, or store at -20ºC to -80ºC and use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles if storing reconstituted material at -20ºC to -80ºC.
Product Description
| MW (kDa) | 18.8 |
| Purity | A greater than or equal to 95% purity was determined by SDS-PAGE. |
| Endotoxin | Endotoxin levels are less than or equal to 1 EU / 1 μg hG-CSF. |
| Activity | The bioactivity of recombinant hG-CSF was determined in an M-NFS-60 cell proliferation assay. The ED50 of each lot is less than or equal to 60 pg/mL. |
Source / Purification
Recombinant human G-CSF was expressed in E. coli and is supplied in a lyophilized form.
Background
G-CSF is a hematopoietic cytokine essential for neutrophil development, survival, and egress from bone marrow (1-4). Macrophages and monocytes are the predominant producers of G-CSF (3) and endothelial cells, fibroblasts, and neuronal cells can produce G-CSF in response to inflammatory stimuli (3). G-CSF inhibits apoptosis in neutrophils and neurons (4,5). G-CSF stimulates proliferation and differentiation of neuronal progenitor cells (5). G-CSF binding to G-CSFR induces receptor dimerization and activation of Jak1/2 tyrosine phosphorylation (3,6). Signaling is through Stat3, ERK, p38, and Akt (5,6). Absence of functional G-CSF or its receptor in humans and mice causes neutropenia (7,8).
- Furze, R.C. and Rankin, S.M. (2008) Immunology 125, 281-8.
- Demetri, G.D. and Griffin, J.D. (1991) Blood 78, 2791-808.
- Srinivasa, S.P. and Doshi, P.D. (2002) Leukemia 16, 244-53.
- van Raam, B.J. et al. (2008) Blood 112, 2046-54.
- Schneider, A. et al. (2005) J Clin Invest 115, 2083-98.
- Nicholson, S.E. et al. (1994) Proc Natl Acad Sci U S A 91, 2985-8.
- Lieschke, G.J. et al. (1994) Blood 84, 1737-46.
- Dong, F. et al. (1994) Proc Natl Acad Sci U S A 91, 4480-4.
Limited Uses
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