Recombinant Human TNF-alpha (Catalog # 210‑TA/CF) induces cytotoxicity in the L-929 mouse fibroblast cell line in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is 25‑100 pg/mL.
1 µg/lane of Recombinant Human TNF-alpha was resolved by SDS-PAGE with silver staining, under reducing (R) conditions, showing a band at 17 kDa.
Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. Matthews, N. and M.L. Neale (1987) in Lymphokines and Interferons, A Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 221. The ED50 for this effect is 25-100 pg/mL. The specific activity of Recombinant Human TNF-alpha is approximately 7.6 x 104 IU/μg, which is calibrated against human TNF-alpha WHO International Standard (NIBSC code: 88/786).
E. coli-derived human TNF-alpha protein Val77-Leu233, with and without an N-terminal Met
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
<0.10 EU per 1 μg of the protein by the LAL method.
17.5 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
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.
Lyophilized from a 0.2 μm filtered solution in PBS. *Small pack size (5 & 20 µg) is supplied as a 0.2 µm filtered
solution in PBS.
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitute at 0.1-1 mg/mL in sterile PBS.
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Human TNF-alpha Protein, CF
TNFSF2TNF superfamily, member 2
tumor necrosis factor (TNF superfamily, member 2)
tumor necrosis factor alpha
Tumor necrosis factor ligand superfamily member 2
tumor necrosis factor
tumor necrosis factor-alpha
Tumor necrosis factor alpha (TNF-alpha ), also known as cachectin and TNFSF2, is the prototypic ligand of the TNF superfamily. It is a pleiotropic molecule that plays a central role in inflammation, immune system development, apoptosis, and lipid metabolism (1, 2). Human TNF-alpha consisits of a 35 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 177 aa extracellular domain (ECD) (3). Within the ECD, human TNF-alpha shares 97% aa sequence identity with rhesus and 71%-92% with bovine, canine, cotton rat, equine, feline, mouse, porcine, and rat TNF-alpha. TNF-alpha is produced by a wide variety of immune, epithelial, endothelial, and tumor cells (1, 2). TNF-alpha is assembled intracellularly to form a noncovalently linked homotrimer which is expressed on the cell surface (4). Cell surface TNF-alpha can induce the lysis of neighboring tumor cells and virus infected cells, and it can generate its own downstream cell signaling following ligation by soluble TNFR I (2, 5). Shedding of membrane bound TNF-alpha by TACE/ADAM17 releases the bioactive cytokine, a 55 kDa soluble trimer of the TNF-alpha extracellular domain (6-8). TNF-alpha binds the ubiquitous 55-60 kDa TNF RI (9, 10) and the hematopoietic cell-restricted 80 kDa TNF RII (11, 12), both of which are also expressed as homotrimers (1, 2, 13). Both type I and type II receptors bind TNF-alpha with comparable affinity (14), although only TNF RI contains a cytoplasmic death domain which triggers the activation of apoptosis. Soluble forms of both types of receptors are released and can neutralize the biological activity of TNF-alpha (15).
Zelova, H. and J. Hosek (2013) Inflamm. Res. 62:641.
Juhasz, K. et al. (2013) Expert Rev. Clin. Immunol. 9:335.
Pennica, D. et al. (1984) Nature 312:724.
Tang, P. et al. (1996) Biochemistry 35:8216.
Perez, C. et al. (1990) Cell 63:251.
Black, R.A. et al. (1997) Nature 385:729.
Moss, M.L. et al. (1997) Nature 385:733.
Gearing, A.J.H. et al. (1994) Nature 370:555.
Schall, T.J. et al. (1990) Cell 61:361.
Loetscher, H. et al. (1990) Cell 61:351.
Dembic, Z. et al. (1990) Cytokine 2:231.
Smith, C.A. et al. (1990) Science 248:1019.
Loetscher, H. et al. (1991) J. Biol. Chem. 266:18324.
Pinckard, J.K. et al. (1997) J. Biol. Chem. 272:10784.
Engelmann, H. et al. (1990) J. Biol. Chem. 265:1531.
We have publications tested in 15 confirmed species: Human, Mouse, Rat, Bovine, Canine, Feline, Guinea Pig, Hamster, N/A, Ovine, Porcine, Primate - Chlorocebus pygerythrus (Vervet Monkey), Primate - Macaca fascicularis (Crab-eating Monkey or Cynomolgus Macaque), Primate - Macaca mulatta (Rhesus Macaque), Rabbit.
We have publications tested in 10 applications: Bioassay, ELISA Standard, Hemofiltration Procedure, In Vivo, Media Supplement - Cell Prep, Not Specified, Standard, Stimulation, WB Standard, cell culture.
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Primate - Chlorocebus pygerythrus (Vervet Monkey)
Primate - Macaca fascicularis (Crab-eating Monkey or Cynomolgus Macaque)
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FAQs for TNF-alpha (210-TA/CF). (Showing 1 - 4 of 4 FAQs).
I need to know about TNF-alpha antibody kits for mice.
We currently have two TNFalpha ELISA kits specific for mouse: catalog numbers KA0257 and NBP1-92670.
I would like to ask you for help. I need an antibody for Elisa to detect human TNF alpha in a supernatant from a cell culture (meaning supernatant after centrifugation of collected cell suspension from a plate well). Which of your antibodies against human tnf alpha would be suitable? I would like to buy only the primary antibody.
I would recommend catalog number NBP1-67821 or NB600-587; however, a full list of our anti-human TNF alpha antibodies suitable for use in ELISA can be found using this link.
I am interested in a TNF alpha antibody, cross reactive for human, rat and mouse (host species: rabbit). Could your product NBP1-19532 be used in western blotting applications? Or do you have a similar product in your catalog which could fit with my request?
The antibody you mention, NBP1-19532, has not yet been validated in Western blot. I would instead recommend either NBP1-67821 or NB600-587. These are both rabbit polyclonal antibodies that cross-reacts with human, mouse and rat and have been used in Western blotting.
Can your TNF-alpha products be used to treat TBI victims and therefore avoid the perispinal injections with Enbrel?
I am very sorry, but all of our products are for scientific research use only, and none are intended or approved for use in humans.
CD86 - I work in tandem with CD80 CD86 belongs to the immunoglobulin superfamily of proteins that drive innate and adaptive immune responses. It is an 80kD co-stimulatory molecule for the priming and activation of naive and memory T-cells, respectively. CD86 is expressed on activated... Read full blog post.
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