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Growth Factors & Cytokines

Recombinant Human TNF-α

Product Details

Catalog Number: 300-01A

TNF-α is a pleiotropic pro-inflammatory cytokine secreted by various cells, including adipocytes, activated monocytes, macrophages, B cells, T cells and fibroblasts. It belongs to the TNF family of ligands, and signals through two receptors, TNFR1 and TNFR2. TNF-α is cytotoxic to a wide variety of tumor cells, and is an essential factor in mediating the immune response against bacterial infections. TNF-α also plays a role in the induction of septic shock, autoimmune diseases, rheumatoid arthritis, inflammation, and diabetes. Human and murine TNF-α demonstrate significant cross-species reactivity. TNF-α exists in two forms; a type II transmembrane protein, and a mature soluble protein. The TNF-α transmembrane protein is proteolitically cleaved to yield a soluble, biologically active, 17 kDa TNF-α, which forms a non-covalently linked homotrimer in solution. Recombinant Human TNF-α is a soluble 157 amino acid protein (17.4 kDa) which corresponds to C-terminal extracellular domain of the full length transmembrane protein.

Source: E.coli

Synonyms: Tumor Necrosis Factor, TNFSF2, Cachectin, Differentiation-inducing factor (DIF), Necrosin, Cytotoxin


Purity: ≥ 98% by SDS-PAGE gel and HPLC analyses.

Biological Activity: The ED50 as determined by the cytolysis of murine L929 cells in the presence of Actinomycin D is ≤ 0.05 ng/ml, corresponding to a specific activity of ≥ 2 x 107 units/mg.

Calculated Molecular Weight: 17.4 kDa

Accession Number: P01375

Gene ID: 7124

Cross Reactivity Cited in References:
Country Of Origin: USA

Not for human use.

Research Interest

Product Reviews

Existing reviews
Great recombinant protein from peprotech
We use this recombinant TNFa in one of our assays and it has performed extremely well/consistent over the years. I would definitely recommend this product to people who are interested.
From:  Di | Date:  7/8/2020
Reliable TNF both for human and mouse
Using this item for over 12 years.
Always gives consistent results.
Note- very sensitive to freezing and thawing.
We keep it in 100ug/ml, 10ul aliquotes for use and minimize repeated freeze/thaw of the vial.
Works well at 10 ng/ml - 100 ng/ml to study inflammatory gene expression.
From:  Param | Date:  7/9/2020
in vitro probiotic properties assay
We routinely use recombinant human TNF-α in co-incubation with HT29 cells to characterization in vitro of anti-inflammatory probiotic properties of potential candidate strains used IL-8 as readout. This product as Prepothec indicates is sensitive to thawed cycles, I recommend prepare aliquots (100ng/ul).
From:  Edgar | Date:  7/26/2020