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细胞肿瘤抗原P53重组兔单抗
包装与价格:
产品名称 P53 Recombinant Rabbit mAb 产品介绍
细胞肿瘤抗原P53重组兔单抗 商品属性
产品介绍 中文名称细胞肿瘤抗原P53重组兔单抗 别 名P53_HUMAN; Cellular tumor antigen p53; TP53; Antigen NY-CO-13;Phosphoprotein p53; Tumor suppressor p53; tumor protein p53; BCC7; LFS1; BMFS5; TRP53; P 53; P-53; wt-p53; Widespread p53; Wtp53; Wt p53; 抗体来源Rabbit 克隆类型Recombinant 克 隆 号3H6 交叉反应Human 产品应用WB=1:2000-20000,IHC-P=1:200-1000,IHC-F=1:200-1000,IF=1:200-1000,Flow-Cyt=1ug/Test,ICC/IF=1:100-500 not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. 理论分子量43 kDa 检测分子量 细胞定位细胞核 细胞浆 性 状Liquid 浓 度1mg/ml 免 疫 原A synthesized peptide derived from human p53: 360-393 亚 型IgG 纯化方法affinity purified by Protein A 缓 冲 液PBS, Glycerol, BSA. 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This gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. Mutations in this gene are associated with a variety of human cancers, including hereditary cancers such as Li-Fraumeni syndrome. Alternative splicing of this gene and the use of alternate promoters result in multiple transcript variants and isoforms. Additional isoforms have also been shown to result from the use of alternate translation initiation codons (PMIDs: 12032546, 20937277). [provided by RefSeq, Feb 2013]. 靶点与功能
CDKN1C(Cyclin-Dependent Kinase Inhibitor 1C)又称p57Kip2,是Cip/Kip家族抑癌蛋白(分子量31kDa),通过以下机制发挥作用: 细胞周期阻滞:与Cyclin-CDK2/CDK4复合物结合,抑制激酶活性,使细胞停滞于G1期(p57Kip2敲除小鼠出现多器官增生); 胚胎发育调控:在胎盘形成、骨骼发育中起关键作用,是印记基因(母源表达,父源沉默),Beckwith-Wiedemann综合征(过度生长)与CDKN1C印记丢失密切相关; 肿瘤抑制:在肝癌(突变率12%)、胃癌(甲基化率28%)、神经母细胞瘤(缺失率15%) 中异常表达,低表达患者5年生存率降低35%(Cancer Res, 2024)。 实验操作关键要点
IHC-P组织染色(肝癌样本): 抗原修复:EDTA缓冲液(pH9.0)高压修复10分钟(石蜡切片),肝细胞胞质/核信号显著增强; 阳性定位:正常肝组织小叶周边肝细胞胞质呈弱阳性,肝癌组织中因甲基化沉默呈阴性或低表达(与p21联合检测可提高诊断灵敏度); 对照设置:胎盘组织(高表达CDKN1C,阳性对照)和CDKN1C KO小鼠肝组织(阴性对照)。 WB验证(胎盘细胞裂解液): 样本制备:JEG-3细胞(胎盘绒毛膜癌细胞,高表达CDKN1C)用含蛋白酶抑制剂(1mM PMSF) 的RIPA裂解液冰上裂解30分钟,12000g离心取上清; 电泳条件:12% SDS-PAGE凝胶,恒压80V浓缩胶、120V分离胶,转膜使用0.45μm PVDF膜(200mA恒流1小时); 抗体孵育:一抗1:1000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45秒(31kDa处可见清晰条带)。 IP实验(蛋白相互作用验证): 推荐与Cyclin D1抗体共沉淀,验证CDKN1C-Cyclin D1-CDK4三元复合物形成(RIPA裂解液中需添加1mM Na3VO4抑制磷酸酶)。 公司正在出售的产品
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