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细胞角蛋白5单克隆抗体
包装与价格:
产品名称 Cytokeratin 5 Mouse mAb 产品介绍
细胞角蛋白5单克隆抗体 商品属性
中文名称细胞角蛋白5单克隆抗体 别 名Cytokeratin 5; Keratin, type II cytoskeletal 5; CK-5; CK 5; CK5; Keratin-5; K5; 58 kDa cytokeratin; KRT5; DDD; EBS 2; EBS2; K5; Keratin 5(epidermolysis bullosa simplex Dowling-Meara/Kobner/Weber-Cockayne types); Keratin 5; Keratin Type II Cytoskeletal 5; Keratin5; KRT 5; KRT 5A; KRT5; Cytokeratin-5; Cytokeratin5; DDD; epidermolysis bullosa simplex 2 Dowling-Meara/Kobner/Weber-Cockayne types; K2C5_HUMAN; Keratin 5; Keratin; Keratin Type II Cytoskeletal 5; Keratin5; KRT5A; type II cytoskeletal 5; Type-II keratin Kb5. 抗体来源Mouse 克隆类型Monoclonal 克 隆 号12H10 交叉反应Human 产品应用IHC-P=1:200-500,IHC-F=1:200-500,IF=1:200-500 not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. 理论分子量64 kDa 检测分子量 细胞定位细胞核 细胞浆 细胞外基质 性 状Liquid 浓 度1mg/ml 免 疫 原KLH conjugated synthetic peptide derived from human CK5 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 °C 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Cytokeratins (CK) are intermediate filaments of epithelial cells, both in keratinising tissue (ie., skin) and non keratinising cells (ie., mesothelial cells). Although not a traditional marker for endothelial cells, cytokeratins have also been found in some microvascular endothelial cells. At least 20 different cytokeratins (CK) in the molecular range of 40 to 70 kDa and isoelectric points of 5 to 8.5 can be identified using two dimensional gel electrophoresis. Biochemically, most members of the CK family fall into one of two classes, type I (acidic polypeptides) and type II (basic polypeptides). At least one member of the acidic family and one member of the basic family is expressed in all epithelial cells. Defects in KRT5 are a cause of epidermolysis bullosa simplex. 靶点与功能
细胞角蛋白5(Cytokeratin 5,CK5)是I型酸性角蛋白家族成员(CK5/CK14异二聚体),分子量约58kDa,主要表达于复层鳞状上皮的基底细胞(如皮肤、食管、宫颈上皮)及腺上皮的肌上皮细胞。其核心功能包括: 结构支撑:维持上皮细胞机械强度,参与细胞迁移与极性建立; 临床价值:作为鳞状细胞癌(如肺鳞癌、头颈部鳞癌) 的诊断标志物,与CK7联合检测可鉴别肺腺癌(CK7+CK5-)与鳞癌(CK5+CK7-); 研究意义:标记乳腺干细胞及基底样乳腺癌(三阴性乳腺癌亚型),辅助肿瘤干细胞特性研究。 实验操作关键要点
IHC-P组织染色(肺鳞癌样本): 抗原修复:采用柠檬酸钠缓冲液(pH6.0) 高压修复2分钟(121℃),冷却至室温后用3% H₂O₂阻断内源性过氧化物酶10分钟; 阳性定位:鳞状上皮基底细胞层胞质强阳性,鳞癌组织中呈弥漫性胞质着色(与CK14共表达); 对照设置:必须包含正常皮肤组织(阳性对照,基底细胞层显色)和肝细胞癌组织(阴性对照)。 WB验证(A431细胞裂解液): 样本制备:使用含1% SDS的RIPA裂解液(避免角蛋白降解),冰上裂解30分钟,14000g离心20分钟取上清; 电泳条件:10% SDS-PAGE凝胶,恒压80V浓缩胶、120V分离胶,转膜选用0.45μm PVDF膜(300mA恒流1.5小时); 抗体孵育:兔单抗1:2000稀释(5% BSA+TBST),4℃孵育过夜,HRP二抗(山羊抗兔)1:5000室温孵育1小时,曝光时间30-60秒。 流式细胞术(原代上皮细胞): 样本处理:细胞用0.25%胰酶消化成单细胞悬液,4%多聚甲醛固定15分钟,0.1% Triton X-100透化10分钟; 抗体孵育:小鼠单抗1:100稀释(含1% BSA的PBS),4℃避光孵育30分钟,Alexa Fluor 488标记二抗1:200室温孵育20分钟; 数据采集:流式细胞仪激发波长488nm,检测CK5+细胞比例(正常上皮基底细胞占比约10-15%)。 公司正在出售的产品
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