IL-3, IK2200Human

€168 per 10μg

€284 per 50μg

€494 per 100μg

Catalog number


  • IL-3 (Interleukin-3, Hematopoietic growth factor, Mast cell growth factor), a pleiotropic growth factor, is mainly produced by activated T-cells, but is also produced by keratinocytes, NK-cells, mast cells, endothelial cells, and monocytes. IL-3 promotes proliferation and differentiation of various hematopoietic cell types, including pluripotent stem cells and more committed progenitors. IL-3 also affects activity of mature hematopoietic cells and often functions in combination with other cytokines. Human IL-3 is species-specific and shows no biological activity on murine cells. Recombinant human IL-3 is a 17 kDa globular protein consisting of 133 amino acid residues.

  • Produced in the endosperm tissue of barley grain (Hordeum vulgare).

  • PBS pH 7.2, sterile filtered through 0.2 µm filter.

  • Greater than 95% by SDS-PAGE gel analysis.

  • Note: Always centrifuge the vial before opening. It is recommended to reconstitute the lyophilized protein in sterile buffered saline to a concentration of no less than 100 µg/ml. For long term storage of the reconstituted solution it is recommended to add a carrier protein (0.1% HSA or BSA).

  • The lyophilized protein, though stable at room temperature for few weeks, is best stored at -20°C. Reconstituted protein should be used immediately or stored in working aliquots at -20°C. Avoid repeated freeze-thaw cycles.

  • Each batch of ISOkine growth factor is tested for bioactivity and verified to have comparable activity to a commercial source. The bioactivity of ISOkine recombinant human IL-3 was determined by its dose-dependent effects on the proliferation of TF-1 cells. The ED50 value for this effect is typically < 0.2 ng/ml, corresponding to a specific activity of > 5 x 10e6 units/mg. Optimal concentration should be determined for specific applications and cell lines

  • Endotoxin level is less than 0.005ng per µg of ISOkine product (0.05EU/µg).

  • Purified ISOkine product carries no pyrogenic or pro-inflammatory contaminants, as assayed with monocyte activation test using Human 10-plex Cytokine Assay measuring IL-6, TNF-alpha and IL-1 beta induction. ** Ref. The Blood Bank, University Hospital of Iceland, Reykjavik, Iceland

  • Recombinant human IL-3 contains 133 amino acids and a 16 a.a. histidine-based tag for a total length of 149 a.a. and has a predicted molecular mass of 17.2 kDa. As a result of glycosylation, the recombinant protein migrates with an apparent molecular mass of 20-23 kDa in SDS-PAGE