Human TNFa Recombinant Protein (Avi, His tag)

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SKU:
RPES5473
Product Type:
Recombinant Protein
Species:
Human

Description

Product Name:Human TNFa Recombinant Protein (Avi, His tag)
Product Code:RPES5473
Size:20µg
Species:Human
Expression Host:E.coli
Synonyms:Tumor Necrosis Factor, Cachectin, TNF-Alpha, TNF-a, TNF, TNFA, TNFSF2
Mol Mass:9.79 kDa
AP Mol Mass:12 kDa
Tag:C-Avi-His
Purity:> 95 % as determined by reducing SDS-PAGE.
Endotoxin Level:Please contact us for more information.
Bio Activity:Testing in progress
Sequence:Gly 144-Leu 233
Accession:P01375
Storage:Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Shipping:This product is provided as lyophilized powder which is shipped with ice packs.
Formulation:Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual.
Reconstitution:Please refer to the printed manual for detailed information.
Background:Tumor Necrosis Factor-α (TNF-α) is secreted by macrophages; monocytes; neutrophils; T-cells; and NK-cells following stimulation by bacterial LPS. Cells expressing CD4 secrete TNF-α while cells that express CD8 secrete little or no TNF-α. Synthesis of TNF-α can be induced by many different stimuli including interferons; IL2; and GM-CSF. The clinical use of the potent anti-tumor activity of TNF-α has been limited by the proinflammatory side effects such as fever; dose-limiting hypotension; hepatotoxicity; intravascular thrombosis; and hemorrhage. Designing clinically applicable TNF-α mutants with low systemic toxicity has been of intense pharmacological interest. Human TNF-α that binds to murine TNF-R55 but not murine TNF-R7; exhibits retained anti-tumor activity and reduced systemic toxicity in mice compared with murine TNF-α; which binds to both murine TNF receptors. Based on these results; many TNF-α mutants that selectively bind to TNF-R55 have been designed. These mutants displayed cytotoxic activities on tumor cell lines in vitro and have exhibited lower systemic toxicity in vivo. Recombinant Human TNF-α High Active Mutant differs from the wild-type by amino acid subsitution of amino acids 1-7 with Arg8; Lys9; Arg10 and Phe157. This mutant form has been shown to have increased activity with less inflammatory side effects in vivo.
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