TNF alpha Protein, Human, Recombinant (aa 57-233, His)

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.

规格	价格/CNY		数量
10 μg	￥ 1,170	5日内发货
50 μg	￥ 3,470	5日内发货
500 μg	￥ 13,200	5日内发货
1 mg	￥ 18,900	5日内发货

规格

价格/CNY

货期

数量

10 μg

￥ 1,170

5日内发货

50 μg

￥ 3,470

5日内发货

500 μg

￥ 13,200

5日内发货

1 mg

￥ 18,900

5日内发货

生物活性

1. Loaded Human TNF alpha-His on HIS1K Biosensor, can bind Human TNF RII-mFc with an affinity constant of 1.83 nM as determined in BLI assay. (Regularly tested) 2. Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is 30-150 pg/ml. (QC verified)

产品描述

种属	Human
表达系统	E. coli
标签	N-6His
蛋白编号	P01375
别名	TNFA, TNF-α, Cachectin, 肿瘤坏死因子, TNF-Alpha, TNF-a, TNF α, Tumor Necrosis Factor, TNFSF2, TNF, Tumor Necrosis Factor Ligand Superfamily Member 2
氨基酸序列	Gly57-Leu233
蛋白构建	Recombinant Human Tumor Necrosis Factor Alpha is produced by our E.coli expression system and the target gene encoding Gly57-Leu233 is expressed with a 6His tag at the N-terminus.
蛋白纯度	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
分子量	18 KDa, reducing conditions

内毒素	Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
缓冲液	Lyophilized from a 0.2 μm filtered solution of 20mM PB, 100mM NaCl, pH 8.0.
复溶方法	Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
存储	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
运输方式	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
研究背景	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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复溶计算器

重组蛋白稀释计算器

比活力计算器

Volume (to add to vial)

Mass (in vial)

Desired Reconstitution Concentration

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TNF alpha Protein, Human, Recombinant (aa 57-233, His)

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