Recombinant Human TNF-alpha Protein

SDS-Page: Human TNF-alpha Protein [NBP2-35076]

SDS-Page: Human TNF-alpha Protein [NBP2-35076]

• Reactivity: Hu
• Applications: PAGE, Bioactivity
• Format: Carrier-Free
• Concentration: LYOPH

Recombinant Human TNF-alpha Protein Summary

• Description: A single non-glycosylated polypeptide chain containing 158 amino acids corresponding to TNF-alpha Source: E. coli

  Uniprot ID: P01375

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

• Details of Functionality: TNF-alpha protein is 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 x 10^7 IU/mg in the presence of actinomycin D.
• Source: E. coli
• Protein/Peptide Type: Recombinant Protein
• Gene: TNF
• Purity: > 98 % pure by SDS-PAGE and HPLC
• Endotoxin Note: Less than 1.0 EU/ug of TNF-alpha as determined by LAL method.

Applications/Dilutions

• Dilutions:
  • Bioactivity
  • SDS-Page
• Theoretical MW: 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.

Packaging, Storage & Formulations

• Storage: Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.
• Buffer: Lyophilized from a 0.2 um filtered concentrated solution in 20 mM PB, 10 mM Nacl, pH 7.0.
• Preservative: No Preservative
• Concentration: LYOPH
• Purity: > 98 % pure by SDS-PAGE and HPLC
• Reconstitution Instructions: Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL.

Alternate Names for Recombinant Human TNF-alpha Protein

• APC1 protein
• Cachectin
• Cachetin
• DIF
• TNF
• TNF, monocyte-derived
• TNFA
• TNF-A
• TNFalpha
• TNF-alpha
• TNF-alpha/TNFSF2
• TNF-alphacachectin
• TNFATNF, macrophage-derived
• TNFG1F
• TNFSF1A
• TNFSF2
• 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

Background

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

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.

Publications for TNF-alpha Recombinant Protein (NBP2-35076)(6)

Publications using NBP2-35076

• Gong P, Ding Y, Sun R et al. Mesenchymal stem cells alleviate systemic sclerosis by inhibiting the recruitment of pathogenic macrophages Cell death discovery 2022-11-26 [PMID: 36435837]
• Zhu M, Chu Y, Shang Q et al. Mesenchymal stromal cells pretreated with pro-inflammatory cytokines promote skin wound healing through VEGFC-mediated angiogenesis Stem Cells Transl Med 2020-06-13 [PMID: 32534464] (Human)
• Zhang J, Niu H, Zhao Z et al. CRISPR/Cas9 Knockout of Bak Mediates Bax Translocation to Mitochondria in response to TNFalpha/CHX-induced Apoptosis BioMed Research International Sep 17 2019 [PMID: 31637258] (Flow, WB, KD, Human)
• Liu Z, Li H, Hong C et al. ALS-Associated E478G Mutation in Human OPTN (Optineurin) Promotes Inflammation and Induces Neuronal Cell Death Front Immunol 2018-11-14 [PMID: 30519240] (Bioactivity, Human)
• Min Huang, Pei-Wun Yao, Margaret Dah-Tysr Chang, Sim-Kun Ng. dentification of anti-inflammatory fractions of Geranium wilfordii using tumor necrosis factor-alpha as a drug target on Herbochip(R) - an array-based high throughput screening platform.. BMC Complement Altern Med 2015-05-12 [PMID: 25963543]
• Yin-he Feng, Hui Mao. Expression and preliminary functional analysis of Siglec-F on mouse macrophages. J Zhejiang Univ Sci B 2012-05-01 [PMID: 22556177]

FAQs for TNF-alpha Recombinant Protein (NBP2-35076). (Showing 1 - 4 of 4 FAQs).

1. I need to know about TNF-alpha antibody kits for mice.  ..show answer..
   • We currently have two TNFalpha ELISA kits specific for mouse: catalog numbers KA0257 and NBP1-92670.
2. 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.  ..show answer..
   • 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.
3. 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?  ..show answer..
   • 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.
4. Can your TNF-alpha products be used to treat TBI victims and therefore avoid the perispinal injections with Enbrel?  ..show answer..
   • 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.

Bioinformatics

• Gene Symbol: TNF
• Uniprot:
  • P01375()
  • P01375()
  • P01375()