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细胞角蛋白19重组兔单抗
包装与价格:
产品名称 Cytokeratin 19 Recombinant Rabbit mAb 产品介绍
细胞角蛋白19重组兔单抗 商品属性
中文名称细胞角蛋白19重组兔单抗 别 名40 kDa keratin intermediate filament; CK 19; ck19; CK19; CK-19; KRT19; Cytokeratin19; Cytokeratin-19; k19; k1cs; Keratin 19; Keratin-19; Keratin type I 40 kD; Keratin type i 40kD; Keratin type I cytoskeletal 19; krt19; mgc15366; K1C19_HUMAN; Keratin, type I cytoskeletal 19; Keratin, type I, 40 kd 研究领域肿瘤 细胞生物 干细胞 抗体来源Rabbit 克隆类型Recombinant 克 隆 号2F3 交叉反应Human,Mouse,Rat 产品应用WB=1:1000-5000,IHC-P=1:500-1000,IHC-F=1:500-1000,IF=1:200-1000 not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. 理论分子量44 kDa 检测分子量 细胞定位细胞浆 细胞膜 性 状Liquid 浓 度1mg/ml 免 疫 原A synthesized peptide derived from human Cytokeratin 19: 370-400 亚 型IgG 纯化方法affinity purified by Protein A 缓 冲 液0.01M TBS (pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol. 保存条件Shipped at 4℃. Store at -20℃ for one year. Avoid repeated freeze/thaw cycles. 注意事项This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. PubMedPubMed 产品介绍The protein encoded by this gene is a member of the keratin family. The keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into cytokeratins and hair keratins. The type I cytokeratins consist of acidic proteins which are arranged in pairs of heterotypic keratin chains. Unlike its related family members, this smallest known acidic cytokeratin is not paired with a basic cytokeratin in epithelial cells. It is specifically expressed in the periderm, the transiently superficial layer that envelopes the developing epidermis. The type I cytokeratins are clustered in a region of chromosome 17q12-q21. [provided by RefSeq, Jul 2008] 靶点与功能
CK19是酸性细胞角蛋白家族成员,分子量约44kDa,主要表达于单层上皮组织(如肺、乳腺、胃肠道上皮)的中间丝结构中。其核心功能包括: 结构作用:维持上皮细胞形态与机械稳定性,参与细胞极性建立; 临床价值:CK19片段(CYFRA21-1)是非小细胞肺癌(NSCLC) 的**肿瘤标志物,灵敏度达60%、特异性95%,用于疗效监测和预后评估; 研究意义:作为乳腺干细胞、肝干细胞的表面标志物,可用于干细胞分离鉴定及上皮-间质转化(EMT)机制研究。 实验操作关键要点
IHC-P优化(肺癌组织切片): 抗原修复:采用柠檬酸钠缓冲液(pH6.0) 微波修复15分钟(95℃),增强胞质信号; 阳性定位:肿瘤细胞胞质呈细丝状或弥漫性棕黄色阳性,鳞癌表达强度高于腺癌; 对照设置:必须包含正常支气管上皮(阳性对照)和间叶组织(阴性对照)。 WB检测注意事项: 样本处理:RIPA裂解液(含1mM PMSF)冰上裂解30分钟,12000g离心取上清;若检测CYFRA21-1片段,需添加蛋白酶抑制剂(如EDTA); 电泳条件:12% SDS-PAGE凝胶,恒压80V浓缩胶、120V分离胶,目标条带约44kDa; 抗体孵育:一抗1:1000稀释(5% BSA+TBST),4℃摇床孵育过夜,HRP二抗(山羊抗兔)1:5000室温孵育1小时。 公司正在出售的产品
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