G-CSF Protein, Human (CHO)

G-CSF Protein, Human (CHO) is a polypeptide growth factor that regulates the production of neutrophilic granulocytes.

Recombinant Human Granulocyte Colony-stimulating Factor (CHO-expressed) is a polypeptide growth factor that regulates the production of neutrophilic granulocytes. Granulocyte Colony Stimulating Factor (G-CSF) is a cytokine that normally acts in the bone marrow microenvironment to stimulate blood cell formation. It selectively promotes growth and maturation of neutrophil progenitor cells. Granulocyte Colony Stimulating Factor receptors are present on precursor cells in the bone marrow. By binding to these receptors, Granulocyte Colony Stimulating Factor initiates proliferation and differentiation into mature granulocytes, and also stimulates bone marrow cell release into the circulation. In addition to growth promotion, Granulocyte Colony Stimulating Factor also effects phagocytosis, motility, bactericidal activity and surface molecule expression of neutrophils and monocytes^[1][2]. G-CSF production is induced by several inflammatory stimuli that become rapidly elevated during infection such as interleukin-1β (IL-1β), tumor necrosis factor-alpha (TNFα) and lipopolysaccaride (LPS). Therefore, pathogen-mediated activation of host pattern recognition receptors via LPS, and the host cytokine response to infection, serve to induce circulating levels of G-CSF^[3].

Measured in a cell proliferation assay using M-NFS-60 mouse myelogenous leukemia lymphoblast cells. The ED₅₀ for this effect is <100 pg/mL, corresponding to a specific activity is > 1×10⁷ units/mg.

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  Measured in a cell proliferation assay using M-NFS-60 mouse myelogenous leukemia lymphoblast cells. The ED₅₀ for this effect is 10.95 pg/ml, corresponding to a specific activity is 1×10⁷ units/mg.

Human

CHO

Tag Free

Q8N4W3 (T27-P200)

1440  [NCBI]

TPLGPASSLPQSFLLKCLEQVRKIQGDGAALQEKLCATYKLCHPEELVLLGHSLGIPWAPLSSCPSQALQLAGCLSQLHSGLFLYQGLLQALEGISPELGPTLDTLQLDVADFATTIWQQMEELGMAPALQPTQGAMPAFASAFQRRAGGVLVASHLQSFLEVSYRVLRHLAQP

Approximately 18.3 kDa

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  Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized powder

Lyophilized from a 0.2 μm filtered solution of PBS or 20 mM PB, 150 mM NaCl, pH 7.4 or PBS, pH 7.4, 5% trehalose, 5% mannitol and 0.01% Tween80.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.

• [1]. Demetri GD, et al. Granulocyte Colony Stimulating Factor and its receptor. Blood. 1991 Dec 1;78(11):2791-808.  [Content Brief]

  [2]. Shah J, et al. The clinical use of granulocyte-colony stimulating factor. Br J Hosp Med (Lond). 2014 Feb;75(2):C29-32.  [Content Brief]

  [3]. Panopoulos AD, et al. Granulocyte colony-stimulating factor: molecular mechanisms of action during steady state and 'emergency' hematopoiesis. Cytokine. 2008 Jun;42(3):277-88.  [Content Brief]