一般描述
TNF-α(肿瘤坏死因子α)是由多种细胞分泌的多效性促炎细胞因子,包括脂肪细胞,活化的单核细胞,巨噬细胞,B细胞,T细胞和成纤维细胞。它属于TNF配体家族,通过TNFR1和TNFR2两个受体进行信号传导。该基因定位于人类染色体6p21.3。重组人TNF-α是一种可溶性157个氨基酸的蛋白质(17.4 kDa),对应于全长跨膜蛋白的C末端胞外域。
应用
人TNF-α(肿瘤坏死因子α)已被用作诱导人肠和肝细胞系中促炎基因的阳性对照。
生化/生理作用
TNF-α(肿瘤坏死因子α)对多种肿瘤细胞具有细胞毒性,是介导免疫反应对抗细菌感染的重要因子。然而,它既可以是肿瘤促进剂,也可以是肿瘤抑制剂。TNF-α在感染性休克、自身免疫性疾病、类风湿性关节炎、炎症、细胞凋亡和糖尿病的诱导中也起作用。它还与情绪和焦虑症有关。
序列
VRSSSRTPSD KPVAHVVANP QAEGQLQWLN RRANALLANG VELRDNQLVV PSEGLYLIYS QVLFKGQGCP STHVLLTHTI SRIAVSYQTK VNLLSAIKSP CQRETPEGAE AKPWYEPIYL GGVFQLEKGD RLSAEINRPD YLDFAESGQV YFGIIAL
外形
从10mM磷酸钠,pH 7.4 + 0.5 mM DTT中冻干。
重悬
打开样品瓶之前需离心。 在水中重悬至浓度为 0.1-1.0mg/ml。 不可涡旋。 该溶液可在2-8°C下储存长达1周。 对于长期储存,建议用含有稳定剂(例如5%海藻糖)的缓冲液进一步稀释,并按使用量分装储存于-20℃至-80℃。
储存及稳定性
Store the product at −20 °C. After reconstitution, theproduct can be stored at 2-8 °C for up to 1 month.For extended storage, freeze in working aliquots.Repeated freezing and thawing are not recommended.Do not store in a frost-free freezer.
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
法规信息
常规特殊物品
Depressive symptoms are associated with tumor necrosis factor alpha in systemic lupus erythematosus.
Journal of Neuroinflammation, 13, 5-5 (2016)
Cachetin/TNF-alpha in septic shock and septic adult respiratory distress syndrome.
The American Review of Respiratory Disease, 138, 1377-1379 (1988)
Evolutionarily conserved primary TNF sequences relate to its primitive functions in cell death induction.
Journal of Cell Science, 129, 108-120 (2016)
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.
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.
Trends in Endocrinology and Metabolism, 11, 212-217 (2000)
商品
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