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活动日期:2026.4.20-2026.5.31

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Species    
Human        

Protein Construction    
GM-CSF (Ala18-Glu144), Accession # P04141  

Tag    
No tag

Expression System    
HEK 293        

Purity    
> 95% as determined by SDS-PAGE

Predicted Molecular Mass   
14.5 kDa

SDS-PAGE   
19-25 kDa, under reducing conditions

Endotoxin    
<0.1 EU/μg of the protein by the LAL method.        

Biological Activity    
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is 0.05-0.15 ng/mL.          

Formulation    
Lyophilized from a 0.22μm filtered solution in 7.8mM Na2HP04, 1.5mM KH2PO4, 2.7mM KCl, 500mM NaCl, pH 7.4

Reconstitution    
It is recommended that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute the lyophilized powder at 100 μg/mL in sterile deionized water  

Storage&Stability    
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.        
12 months from date of receipt, at lower than -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, -20 °C under sterile conditions after reconstitution.

Usage    
Research use only

Background    
Granulocyte-macrophage colony-stimulating factor (GM-CSF) was initially classified as a hematopoietic growth factor. It is produced by a number of different cell types, including activated T cells, B cells, macrophages, mast cells, endothelial cells and fibroblasts in response to cytokine of immune and inflammatory stimuli. GM-CSF is a vital immune system messenger that drives the production and activation of key white blood cells. Its synthetic form is a valuable medical tool primarily used to help patients recover their immune function after chemotherapy or a bone marrow transplant. Its use is a balance between achieving a beneficial immune boost and managing its potentially significant inflammatory side effects.