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SRP3177

Sigma-Aldrich

TNF-α human

Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

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Synonym(s):
Cachectin, Cytotoxin, Differentiation-inducing factor (DIF), Necrosin, Tumor Necrosis Factor
NACRES:
NA.32

biological source

human

recombinant

expressed in E. coli

Assay

≥98% (HPLC)
≥98% (SDS-PAGE)

form

lyophilized

potency

≤0.05 ng/mL ED50

mol wt

17.4 kDa

packaging

pkg of 50 μg

technique(s)

cell culture | mammalian: suitable

impurities

<0.1 EU/μg endotoxin, tested

color

white

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... TNF(7124)

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H891611088939001SRP3162
TNF-&#945; human Animal-component free, recombinant, expressed in E. coli, &#8805;98% (SDS-PAGE), &#8805;98% (HPLC), suitable for cell culture

Sigma-Aldrich

SRP3177

TNF-α human

recombinant

expressed in E. coli

recombinant

expressed in HEK 293 cells

recombinant

expressed in yeast

recombinant

expressed in E. coli

assay

≥98% (HPLC), ≥98% (SDS-PAGE)

assay

≥95% (SDS-PAGE)

assay

≥95% (SDS-PAGE)

assay

≥98% (HPLC), ≥98% (SDS-PAGE)

form

lyophilized

form

lyophilized powder

form

solution

form

lyophilized

mol wt

17.4 kDa

mol wt

17 kDa (glycosylated), ~17.4 kDa

mol wt

17,000 Da

mol wt

18.3 kDa

packaging

pkg of 50 μg

packaging

pkg of 10 μg

packaging

pkg of 1,000,000 U (10 μg, 1ml)

packaging

pkg of 20 μg

General description

TNF-α (tumor necrosis factor 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. The gene is mapped to human chromosome 6p21.3. Recombinant human TNF-α is a soluble 157 amino acid protein (17.4kDa) which corresponds to C-terminal extracellular domain of the full length transmembrane protein.

Application

TNF-α (tumor necrosis factor α) human has been used as a positive control for induction of proinflammatory genes in human intestinal and hepatic cell lines.

Biochem/physiol Actions

TNF-α (tumor necrosis factor α) is cytotoxic to a wide variety of tumor cells and is an essential factor in mediating the immune response against bacterial infections. However, it can be a tumor promoter as well as a tumor suppressor. TNF-α also plays a role in the induction of septic shock, autoimmune diseases, rheumatoid arthritis, inflammation, apoptosis and diabetes. It is also associated with mood and anxiety disorders.

Sequence

VRSSSRTPSD KPVAHVVANP QAEGQLQWLN RRANALLANG VELRDNQLVV PSEGLYLIYS QVLFKGQGCP STHVLLTHTI SRIAVSYQTK VNLLSAIKSP CQRETPEGAE AKPWYEPIYL GGVFQLEKGD RLSAEINRPD YLDFAESGQV YFGIIAL

Physical form

Lyophilized from 10 mM Sodium Phosphate, pH 7.4 + 0.5mM DTT.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a stabilizer (example 5% Trehalose) and store in working aliquots at -20°C to -80°C.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Effects of carrageenan on cell permeability, cytotoxicity, and cytokine gene expression in human intestinal and hepatic cell lines.
McKim JM Jr
Food And Chemical Toxicology, 96, 1-10 (2016)
Regulation of cytokines, cytokine inhibitors, and acute-phase proteins following anti-TNF-alpha therapy in rheumatoid arthritis.
Charles P
Journal of Immunology, 163, 1521-1528 (1999)
Cachetin/TNF-alpha in septic shock and septic adult respiratory distress syndrome.
Tracey KJ
The American Review of Respiratory Disease, 138, 1377-1379 (1988)
Association between tumor necrosis factor-a gene polymorphisms and diffuse large B-cell lymphoma in Chinese Han population: evidence from two center case-control study and a meta-analysis.
Yang C
International Journal of Clinical and Experimental Pathology, 8, 13011-13022 (2015)
Potential role of TNF-alpha in the pathogenesis of insulin resistance and type 2 diabetes.
Moller DE
Trends in Endocrinology and Metabolism, 11, 212-217 (2000)

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