Recombinant Human Tumor necrosis factor protein (TNF) (Active)

Cytokine that binds to TNFRSF1A, TNFR1 and TNFRSF1B, TNFBR. It is mainly secreted by macrophages and can induce cell death of certain tumor cell lines. It is potent pyrogen causing fever by direct action or by stimulation of interleukin-1 secretion and is implicated in the induction of cachexia, Under certain conditions it can stimulate cell proliferation and induce cell differentiation. Impairs regulatory T-cells (Treg) function in individuals with rheumatoid arthritis via FOXP3 dephosphorylation. Upregulates the expression of protein phosphatase 1 (PP1), which dephosphorylates the key 'Ser-418' residue of FOXP3, thereby inactivating FOXP3 and rendering Treg cells functionally defective (PubMed:23396208) . Key mediator of cell death in the anticancer action of BCG-stimulated neutrophils in combination with DIABLO, SMAC mimetic in the RT4v6 bladder cancer cell line (PubMed:22517918) . {ECO:0000269|PubMed:16829952, ECO:0000269|PubMed:22517918, ECO:0000269|PubMed:23396208}.; The TNF intracellular domain (ICD) form induces IL12 production in dendritic cells. {ECO:0000269|PubMed:16829952}.

M+VRSSSRTPS DKPVAHVVAN PQAEGQLQWL NRRANALLAN GVELRDNQLV VPSEGLYLIY SQVLFKGQGC PSTHVLLTHT ISRIAVSYQT KVNLLSAIKS PCQRETPEGA EAKPWYEPIY LGGVFQLEKG DRLSAEINRP DYLDFAESGQ VYFGIIAL

Fully biologically active when compared to standard. The ED50 as determined by a cytotoxicity assay using murine L929 cells is less than 0.05 ng, ml, corresponding to a specific activity of 2.0 107 IU, mg in the presence of actinomycin D.

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.