Recombinant Human GM-CSF (CHO-expressed) Protein

Carrier Free

Catalog # Availability Size / Price Qty
7954-GM-010/CF
7954-GM-050/CF
7954-GM-020/CF
7954-GM-100/CF

With Carrier

Catalog # Availability Size / Price Qty
7954-GM-010
Recombinant Human GM-CSF (CHO-expressed) Protein Bioactivity
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Product Details
Citations (1)
FAQs
Reviews (7)

Recombinant Human GM-CSF (CHO-expressed) Protein Summary

Product Specifications

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.01 EU per 1 μg of the protein by the LAL method.
Activity
Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The ED50 for this effect is 6-30 pg/mL.
Source
Chinese Hamster Ovary cell line, CHO-derived human GM-CSF protein
Ala18-Glu144
Accession #
N-terminal Sequence
Analysis
Ala18
Predicted Molecular Mass
14.5 kDa
SDS-PAGE
20-35 kDa, reducing conditions

Product Datasheets

7954-GM (with carrier)

7954-GM/CF (carrier free)

Carrier Free

What does CF mean?

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.

What formulation is right for me?

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.

7954-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 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.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

7954-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.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Data Image

Bioactivity Recombinant Human GM-CSF (CHO-expressed) Protein Bioactivity View Larger

Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is 6-30 pg/mL.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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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).

References
  1. Martinez-Moczygemba, M. and D.P. Huston (2003) J. Allergy Clin. Immunol. 112:653.
  2. Barreda, D.R. et al. (2004) Dev. Comp. Immunol. 28:509.
  3. Eksioglu, E.A. et al. (2007) Exp. Hematol. 35:1163.
  4. Cao, Y. (2007) J. Clin. Invest. 117:2362.
  5. Fleetwood, A.J. et al. (2005) Crit. Rev. Immunol. 25:405.
  6. Heuser, M. et al. (2007) Semin. Hematol. 44:148.
  7. Hege, K.M. et al. (2006) Int. Rev. Immunol. 25:321.
  8. Kaushansky, K. et al. (1992) Biochemistry 31:1881.
  9. Diederichs, K. et al. (1991) Science 254:1779. 
  10. Cantrell, M.A. et al. (1985) Proc. Natl. Acad. Sci. 82:6250.
  11. Lee, F. et al. (1985) Proc. Natl. Acad. Sci. 82:4360.
  12. Wong, G.G. et al. (1985) Science 228:810.
  13. Onetto-Pothier, N. et al. (1990) Blood 75:59.
  14. Hayashida, K. et al. (1990) Proc. Natl. Acad. Sci. 87:9655.
  15. Pelley, J.L. et al. (2007) Exp. Hematol. 35:1483.
  16. Hogge, G.S. et al. (1990) Cancer Gene Ther. 6:26.
  17. Sprague, W.S. et al. (2005) J. Comp. Pathol. 133:136.
  18. Shanafelt, A.B. et al. (1991) J. Biol. Chem. 266:13804.
Long Name
Granulocyte Macrophage Growth Factor
Entrez Gene IDs
1437 (Human); 12981 (Mouse); 116630 (Rat); 397208 (Porcine); 403923 (Canine); 493805 (Feline)
Alternate Names
colony stimulating factor 2 (granulocyte-macrophage); Colony-stimulating factor; CSF; CSF2; CSF-2; GMCSF; GM-CSF; GMCSFgranulocyte-macrophage colony-stimulating factor; granulocyte-macrophage colony stimulating factor; MGC131935; MGC138897; Molgramostim; molgramostin; Sargramostim

Citation for Recombinant Human GM-CSF (CHO-expressed) Protein

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. Bridging pro-inflammatory signals, synaptic transmission and protection in spinal explants in vitro
    Authors: M Medelin, V Giacco, A Aldinucci, G Castronovo, E Bonechi, A Sibilla, M Tanturli, M Torcia, L Ballerini, F Cozzolino, C Ballerini
    Mol Brain, 2018;11(1):3.
    Species: Mouse
    Sample Types: Whole Tissue
    Applications: Bioassay

FAQs

  1. Is there a mass to unit conversion factor for Recombinant Human GM-CSF (CHO-expressed) Protein (Catalog # 7954-GM & 7954-GM/CF)?

    • We have not developed a specific mass to unit conversion factor for Recombinant Human GM-CSF CHO-expressed Protein (Catalog # 7954-GM & 7954-GM/CF).  That said, because Catalog # 7954-GM and Recombinant Human GM-CSF E. coli-expressed Protein (Catalog # 215-GM) share an ED50 range for our routine QC assay (Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The ED50 for this effect is 6-30 pg/mL), it is possible to use the mass to unit conversion factor for Catalog # 215-GM as a starting point for Catalog # 7954-GM.  Catalog # 215-GM has been evaluated against human GM-CSF WHO International Standard (NIBSC code: 88/646).  The specific activity of Recombinant Human GM-CSF (Catalog # 215-GM) is approximately 1.5 x 104 IU/μg, which is calibrated against human GM-CSF WHO International Standard (NIBSC code: 88/646).  Since units of activity can vary per assay, we would recommend that end-users develop a conversion factor for their individual application.

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Reviews for Recombinant Human GM-CSF (CHO-expressed) Protein

Average Rating: 4.9 (Based on 7 Reviews)

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Recombinant Human GM-CSF (CHO-expressed) Protein
By Anonymous on 12/18/2020
Application: Binding assay/Protein-protein interaction

Recombinant Human GM-CSF (CHO-expressed) Protein
By Anonymous on 10/01/2020
Application: Stem/Immune cell maintenance or differentiation
Reason for Rating: worked very well for the differentiation experiments

Recombinant Human GM-CSF (CHO-expressed) Protein
By Anonymous on 09/29/2020
Application: In vitro bioactivity in cell culture
Reason for Rating: Excellent for differentiation of human monocytes into dendritic cells (along with IL-4). Cells were cultured for 6 days with GM-CSF at 67 ng/ml.

Flow cytometric of human monocytes (left) before and after differentiation into dendritic cells (right). CD1a-CD14+ monocytes are in the upper left quadrant, whereas CD1a+CD14- dendritic cells are in the lower right quadrant.


Recombinant Human GM-CSF (CHO-expressed) Protein
By Anonymous on 09/16/2019
Application: In vitro bioactivity in cell culture

Recombinant Human GM-CSF (CHO-expressed) Protein
By Anonymous on 11/19/2017
Application: Cell differentiation
Reason for Rating: Excellent at inducing CD14+ monocyte differentiation into CD1a+ DCs.

Enriched CD14+ monocytes were cultured with 500 IU/mL IL-4 and 1000 IU/mL GM-CSF for 6 days.


Recombinant Human GM-CSF (CHO-expressed) Protein
By Anonymous on 05/16/2017
Application: Binding assay/Protein-protein interaction

Recombinant Human GM-CSF (CHO-expressed) Protein
By Anonymous on 08/09/2016
Application: In vitro bioactivity in cell culture
Reason for Rating: 100ng/ml of this cytokine +IL-4 helped to differentiate CD14+ monocytes into CD14 negative dendritic cells in 5 days.