Recombinant Human TNF-alpha Protein

Novus Biologicals | Catalog # NBC1-18460

Novus Biologicals
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Key Product Details

Source

E. coli

Applications

Bioactivity, SDS-PAGE
View all TNF-alpha Proteins and Enzymes »

Product Specifications

Description

An un-tagged recombinant protein corresponding to the amino acids 77-233 of Human TNF-alpha

Source: E.coli

Amino Acid Sequence: MVRSSSRTPS DKPVAHVVAN PQAEGQLQWL NRRANALLAN GVELRDNQLV VPSEGLYLIY SQVLFKGQGC PSTHVLLTHT ISRIAVSYQT KVNLLSAIKS PCQRETPEGA EAKPWYEPIY LGGVFQLEKG DRLSAEINRP DYLDFAESGQ VYFGIIAL

Purity

>95%, by SDS-PAGE

Endotoxin Level

< 1.0 EU per 1 microgram of protein (determined by LAL method)

Predicted Molecular Mass

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.

Activity

Measured in a cytotoxicity assay using L-929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is less or equal to 0.2 ng/ml.

Protein / Peptide Type

Recombinant Protein

Scientific Data Images for Recombinant Human TNF-alpha Protein

SDS-PAGE: Recombinant Human TNF-alpha Protein [NBC1-18460]

SDS-PAGE: Recombinant Human TNF-alpha Protein [NBC1-18460]

SDS-Page: Recombinant Human TNF-alpha Protein [NBC1-18460] - 15% SDS-PAGE (3ug)

Formulation, Preparation, and Storage

NBC1-18460
Formulation PBS (pH 7.4)
Preservative No Preservative
Concentration 1 mg/ml
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: TNF-alpha

Tumor necrosis factor (TNF)-alpha is a pro-inflammatory cytokine belonging to the TNF superfamily that is secreted by monocytes/macrophages, T cell, and natural killer (NK), among others (1). TNF-alpha is synthesized as a 233 amino acid (aa) transmembrane protein (mTNF-alpha) with a theoretical molecular weight (MW) of 26 kDa (1,2) that forms a homotrimer. mTNF-alpha is cleaved by TNF-alpha converting enzyme (TACE) and released in its 157 aa, 17 kDa soluble form (sTNF-alpha) (1-5). Both mTNF-alpha and sTNF-alpha are capable of binding type 1 TNF receptors (TNFR1), whereas mTNF-alpha predominately binds to TNFR2 (1,2). TNF-alpha binding to its receptors causes receptor recruitment of adaptor proteins, formation of signaling complexes, and downstream signaling cascades (e.g. MAPK, NF-kappaB, and Caspase-8), leading to distinct cellular responses such as survival, proliferation, inflammation, necroptosis, and apoptosis (1-5).

TNF-alpha is critical for normal immune response; however, dysregulation of TNF-alpha production can result in various pathologies (2,4,5). Excessive production of pro-inflammatory cytokines including interleukin 1 (IL-1), IL-6, and TNF-alpha has been implicated in an array of autoimmune diseases like rheumatoid arthritis (RA), inflammatory bowel disease (IBD), and psoriasis (2,4,5). Anti-TNF monoclonal antibodies, including Infliximab, and soluble TNFR have been approved for the treatment of autoimmune and TNF-mediated diseases (5). Additionally, data suggests that TNF inhibitors can be beneficial for treating patients experiencing immune-related adverse events associated with immune checkpoint inhibitor cancer treatment (6).

References

1. Holbrook J, Lara-Reyna S, Jarosz-Griffiths H, McDermott M. Tumour necrosis factor signalling in health and disease. F1000Res. 2019;8:F1000 Faculty Rev-111. https://doi.org/10.12688/f1000research.17023.1

2. Jang DI, Lee AH, Shin HY, et al. The Role of Tumor Necrosis Factor Alpha (TNF-alpha) in Autoimmune Disease and Current TNF-alpha Inhibitors in Therapeutics. Int J Mol Sci. 2021;22(5):2719. https://doi.org/10.3390/ijms22052719

3. Horiuchi T, Mitoma H, Harashima S, Tsukamoto H, Shimoda T. Transmembrane TNF-alpha: structure, function and interaction with anti-TNF agents. Rheumatology (Oxford). 2010;49(7):1215-1228. https://doi.org/10.1093/rheumatology/keq031

4. Webster JD, Vucic D. The Balance of TNF Mediated Pathways Regulates Inflammatory Cell Death Signaling in Healthy and Diseased Tissues. Front Cell Dev Biol. 2020;8:365. https://doi.org/10.3389/fcell.2020.00365

5. Kalliolias GD, Ivashkiv LB. TNF biology, pathogenic mechanisms and emerging therapeutic strategies. Nat Rev Rheumatol. 2016; 12(1):49-62. https://doi.org/10.1038/nrrheum.2015.169

6. Chen AY, Wolchok JD, Bass AR. TNF in the era of immune checkpoint inhibitors: friend or foe?. Nat Rev Rheumatol. 2021;17(4):213-223. doi:10.1038/s41584-021-00584-4

Long Name

Tumor Necrosis Factor alpha

Alternate Names

Cachetin, DIF, TNF, TNF-A, TNFA, TNFalpha, TNFG1F, TNFSF1A, TNFSF2

Gene Symbol

TNF

Additional TNF-alpha Products

Product Documents for Recombinant Human TNF-alpha Protein

Certificate of Analysis

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Product Specific Notices for Recombinant Human TNF-alpha Protein

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

Citations for Recombinant Human TNF-alpha Protein

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FAQs for Recombinant Human TNF-alpha Protein

Showing  1 - 4 of 4 FAQs Showing All

    • Q: Can your TNF-alpha products be used to treat TBI victims and therefore avoid the perispinal injections with Enbrel?
      A: 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.

    • Q: 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?
      A: 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.

    • A: We currently have two TNFalpha ELISA kits specific for mouse: catalog numbers KA0257 and NBP1-92670.

    • Q: 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.
      A: 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.
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