Cat. #:GMP-106-06
Recombinant Human Interferon-gamma GMP
Technical Parameters
SynonymsImmune Interferon, type II interferon, T cell interferon, MAF
Source Escherichia coli.
Molecular Weight Approximately 16.9 kDa, a single non-glycosylated polypeptide chain containing 144 amino acids.
Quantity 5µg/100µg/1mg
Purity > 98 % by SDS-PAGE and HPLC analyses.
Biological Activity Fully biologically active when compared to standard. The ED50 as measured in anti-viral assays using human HeLa cells infected with encephalomyocarditis (EMC) virus is 0.15-0.80 ng/ml.
Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 5.0, with 3 % Trehalose.
Endotoxin Less than 0.01 EU/µg of rHuIFN-γ GMP as determined by LAL method.
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.
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.
Usage This GMP product can be for research use or further manufacturing use.
Quality statement The manufacture and testing of this product is in compliance with ICH Q7a guidelines.
Reference1. Pennino D, Bhavsar PK, Effner R, et al. 2012. J Allergy Clin Immunol,
2. Hibi M, Hachimura S, Ise W, et al. 2003. Cytotechnology, 43: 49-55.
3. Wang H, Ruan Z, Wang Y, et al. 2008. Mol Immunol, 45: 1548-56.
4. Kopinski P, Przybylski G, Jarzemska A, et al. 2007. Pol Merkur Lekarski, 23: 15-21.
BackgroundInterferon-gamma (IFN-γ), also known as Type II interferon or immune interferon, is a cytokine produced primarily by T-lymphocytes and natural killer cells. The protein shares no significant homology with IFN-β or the various IFN-α family proteins. Mature IFN-γ exists as noncovalently-linked homodimers. Human IFN-γ is highly species specific and is biologically active only in human and primate cells. IFN-γ was originally characterized based on its antiviral activities. The protein also exerts antiproliferative, immunoregulatory and proinflammatory activities and is thus important in host defense mechanisms. IFN-γ induces the production of cytokines, upregulates the expression of class I and II MHC antigens, Fc receptor and leukocyte adhesion molecules. It modulates macrophage effector functions, influences isotype switching and potentiates the secretion of immunoglobulins by B cells. IFN-γ also augments TH1 cell expansion and may be required for TH1 cell differentiation.