TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-75925

Recombinant Monoclonal Antibody.
Novus Biologicals, part of Bio-Techne

Key Product Details

Species Reactivity

Human

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin, Neutralization, Western Blot

Label

Unconjugated

Antibody Source

Recombinant Monoclonal Rabbit IgG Clone # 2342C

Format

Low Endotoxin, Azide and BSA Free

Concentration

1.0 mg/ml

View all TNF-alpha Antibodies »

Product Specifications

Immunogen

Partial recombinant human TNF-alpha protein (amino acids 77-233)

Clonality

Monoclonal

Host

Rabbit

Isotype

IgG

Endotoxin Level

<0.10 EU per 1 ug of the antibody by the LAL method.

Scientific Data Images for TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free

Western Blot: TNF-alpha Antibody (2342C)Low Endotoxin, Azide and BSA Free [NBP2-75925]

Western Blot: TNF-alpha Antibody (2342C)Low Endotoxin, Azide and BSA Free [NBP2-75925]

Western Blot: TNF-alpha Antibody (2342C) - Low Endotoxin and Azide Free [NBP2-75925] - Western blot shows conditioned media from CHO Chinese hamster ovary cell line either mock transfected or transfected with human TNF- alpha. PVDF membrane was probed with 2 ug/mL of Rabbit Anti-Human TNF-alpha Monoclonal Antibody (NBP2-75925) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). Specific bands were detected for TNF-alpha at approximately 18 and 21 kDa (as indicated). This experiment was conducted under reducing conditions.
Immunohistochemistry-Paraffin: TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free [NBP2-75925]

Immunohistochemistry-Paraffin: TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free [NBP2-75925]

Immunohistochemistry-Paraffin: TNF-alpha Antibody (2342C) - Low Endotoxin and Azide Free [NBP2-75925] - Analysis of a FFPE tissue section of the human intesting using 1:200 dilution of TNF-alpha antibody (NBP2-75925). The signal was developed using HRP-DAB method which followed counterstaining of the cells with hematoxylin. The antibody generated a moderate to strong cytoplasmic staining in crypt cells.
Neutralization: TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free [NBP2-75925]

Neutralization: TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free [NBP2-75925]

Neutralization: TNF-alpha Antibody (2342C) [NBP2-75925] - Recombinant Human TNF-alpha (Catalog # 210-TA) induces cytotoxicity in the the L-929 mouse fibroblast cell line in a dose-dependent manner (orange line), as measured by Resazurin (Catalog # AR002). Cytotoxicity elicited by Recombinant Human TNF-alpha (0.25 ng/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Human TNF-alpha Monoclonal Antibody (Catalog # NBP2-75925). The ND50 is typically 1-10 ng/mL in the presence of the metabolic inhibitor actinomycin D.

Applications for TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free

Application
Recommended Usage

Western Blot

2 ug/ml
Application Notes
Measured by its ability to neutralize TNF-alpha -induced cytotoxicity in the L-929 mouse fibroblast cell line. The Neutralization Dose (ND50) is typically 1-10 ng/mL in the presence of 0.25 ng/mL Recombinant Human TNF-alpha and actinomycin D.

Formulation, Preparation, and Storage

Purification

Protein A or G purified from cell culture supernatant

Formulation

PBS

Format

Low Endotoxin, Azide and BSA Free

Preservative

No Preservative

Concentration

1.0 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, TNF-alpha, TNF-alpha/TNFSF2

Gene Symbol

TNF

Additional TNF-alpha Products

Product Documents for TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free

Product Datasheets

Certificate of Analysis

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Product Specific Notices for TNF-alpha Antibody (2342C) - Low Endotoxin, Azide and BSA Free

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

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