TNF-α/TNFA/TNFSF2 (N-6His), Human, Recombinant
英文名稱(chēng)：TNF-α/TNFA/TNFSF2 (N-6His), Human, Recombinant
貨號(hào)： PCK052
價(jià)格： ￥1180 ￥3480 ￥12880 ￥18880
產(chǎn)品信息
| 產(chǎn)品形態(tài) | 粉末 |
| 產(chǎn)品規(guī)格 | 10μg / 50μg / 500μg / 1mg |
| 別名 | Tumor Necrosis Factor;Cachectin;TNF-Alpha;Tumor Necrosis Factor Ligand Superfamily Member 2;TNF-a;TNF;TNFA;TNFSF2 |
| 物種 | 人 |
| 表達(dá)宿主 | E.coli |
| 序列信息 | Gly57-Leu233 |
| 檢索號(hào) | P01375 |
| 分子量 | 21.8 kDa |
| 表觀分子量 | 18 kDa |
| 標(biāo)簽 | N-6His |
| 生物活性 | 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. |
| 純度 | > 95% as determined by reducing SDS-PAGE. |
| 內(nèi)毒素 | < 1.0 EU per 1 μg as determined by LAL test. |
| 儲(chǔ)存條件 | Lyophilized protein should be stored at -5~-20℃, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at -5~-20℃ for 3 months. |
| 運(yùn)輸條件 | Ambient temperature or ice pack. |
| 有效期 | 12個(gè)月 |
| 制劑 | Lyophilized from a 0.2 μm filtered solution of 20 mM PB, 100 mM NaCl, pH 7.2. |
| 復(fù)融 | Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100 μg/mL. Dissolve the lyophilized protein in sterile water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles. |
| 背景介紹 | 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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期刊：NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
DOI：10.1007/s00210-025-03943-0
影響因子：3.1
引用產(chǎn)品： TNF-α/TNFA/TNFSF2 (N-6His), Human, Recombinant, 小鼠氣管平滑肌細(xì)胞
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期刊：LAB ON A CHIP
影響因子：6.1
引用產(chǎn)品： 人臍靜脈內(nèi)皮細(xì)胞, TNF-α/ TNFA/ TNFSF2, Human, Recombinant, Calcein-AM/PI活死細(xì)胞雙染試劑盒
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Q1:官網(wǎng)的因子都是不含動(dòng)物成分的么？
我們公司的因子都是重組的，是不含動(dòng)物源成分的。
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Q2:細(xì)胞因子用無(wú)菌水配成了100ug/mL母液，用于實(shí)驗(yàn)時(shí)，需要的終濃度為10ng/mL，可以用培養(yǎng)基直接稀釋?zhuān)窟€是需要通過(guò)PBS（含5%海藻糖）進(jìn)一步稀釋才行呢？
如果是直接做實(shí)驗(yàn)，可以直接添加培養(yǎng)基進(jìn)行稀釋配置。 如果是需要長(zhǎng)時(shí)間保存的話，需要使用含載體蛋白(如0.1%BSA，10% FBS，5%HSA或5%海藻糖)的溶液進(jìn)一步釋后分裝保存于-5~-20℃或者-80℃冰箱
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Q3:細(xì)胞因子加無(wú)菌水溶解后需要再次離心嗎？
加了無(wú)菌水后，如果沒(méi)有掛壁現(xiàn)象是不用離心的，如果您放置了一段時(shí)間，再次使用時(shí)是可以使用離心機(jī)離心的
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Q4:細(xì)胞因子離心前需要放置室溫嗎？
不用提前放置室溫.
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Q5:收到細(xì)胞因子產(chǎn)品用什么溶劑復(fù)融？
1、細(xì)胞因子產(chǎn)品大部分為凍干形式發(fā)貨，少部分液體形式發(fā)貨； 2、凍干粉狀態(tài)的因子產(chǎn)品需指定溶劑復(fù)溶，請(qǐng)參考產(chǎn)品說(shuō)明書(shū)【復(fù)融】方法，按照要求使用對(duì)應(yīng)溶劑溶解，大部分因子為無(wú)菌水復(fù)融，少部分需要無(wú)菌水以外的特殊溶劑溶解的產(chǎn)品則隨貨會(huì)贈(zèng)送相應(yīng)的復(fù)融試劑；凍干粉溶解后如您需要進(jìn)一步稀釋分裝，需使用含載體蛋白(如0.1% BSA，10%FBS，5%HSA 或 5% 海藻糖)的溶液進(jìn)一步稀釋后分裝冷凍保存。 3、液體形式因子產(chǎn)品不需要復(fù)溶，具體濃度詳見(jiàn)產(chǎn)品標(biāo)簽，按照實(shí)驗(yàn)需要用含載體蛋白(如0.1% BSA，10%FBS，5%HSA 或 5% 海藻糖)的溶液進(jìn)一步稀釋后分裝冷凍保存即可；
識(shí)別碼示意圖
