T&L Biotechnology

Product Name

Generic Name

Recombinant Human IFN-γ Protein

Synonym

Interferon-gamma, Interferon-γ

Product Information

Protein sequence

Accession # AAH70256 Q24-Q166

Expression Host

HEK293 cells

QC Testing Purity

> 90 % as determined by SDS-PAGE

Activity

Measured in anti-viral assays protecting human amniotic cells (WISH) from the destructive effects of vesicular stomatitis virus (VSV). The ED50 for this effect is ≤50 ng/mL.

Endotoxin Level

< 0.1EU per 1 μg of the protein by the LAL method.

Molecular Mass

Predicts a molecular mass of 17.6 KDa

Formulation

Lyophilized from sterile PBS, pH 7.4. Normally 6 % mannitol are added as protectants before lyophilization.

Stability & Storage

24 months at 2℃ to 8℃ in lyophilized state.

6 months at -20℃ under sterile conditions after reconstitution.

12 months at -80℃ under sterile conditions after reconstitution.

Recommend to aliquot the protein into smaller quantities after reconstituting with water for injection, normal saline or PBS, and keep the diluted concentration above 100μg/mL.

Avoid repeated freeze-thaw cycles.

Background

IFN-γ is produced by a variety of immune cells under inflammatory conditions, notably by T cells and NK cells. IFN-γ exerts a wide range of immunoregulatory activities and plays a key role in host defense by promoting the development and activation of Th1 cells, chemoattraction and activation of monocytes and macrophages, up-regulation of antigen presentation molecules, and immunoglobulin class switching in B cells. It also exhibits antiviral, antiproliferative, and apoptotic effects. In addition, IFN-γ has a strong inhibitory effect on the activation, proliferation and secretion of extracellular matrix of hepatic stellate cells (HSC), and it can inhibit collagen synthesis and promote collagen degradation.

References 

1.Wang Y, Dai H, Li H, Lv HY,Wang T, Fu XB,and Han WD (2011) Growth of Human Colorectal Cancer SW1116 Cells Is Inhibited by Cytokine-Induced Killer Cells. Clinical and Developmental Immunology 2011 (1740-2522):621414.

2.  Sangiolo D, Mesiano G, F Carnevale-Schianca, W Piacibello, M Aglietta and A Cignetti (2009) Cytokine induced killer cells as adoptive immunotherapy strategy to augment graft versus tumor after hematopoietic cell transplantation. Expert Opin. Biol. Ther. 9(7):831-840.

Trial dosage: A customer can apply for up to five samples a year (the actual trial dosage is determined by telephone or email communication).Scope of use: Samples are limited to testing and research purposes.
Cost: Free for samples, customer is responsible for shipping and handling charges, reference cost is $50 in the US, €60 in the EU, and $50 in other countries.
How to apply: You can apply by telephone or by email (the email application should specify the sample name, item number, contact person, telephone number, consignee address, etc.).