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前列腺特异膜抗原重组兔单克隆抗体
包装与价格:
产品名称 FOLH1 Recombinant Rabbit mAb 产品介绍
前列腺特异膜抗原重组兔单克隆抗体 商品属性
中文名称前列腺特异膜抗原重组兔单克隆抗体 别 名FOLH; PMSA; Cell growth inhibiting protein 27; FGCP; Folate hydrolase 1; folate hydrolase; Folate hydrolase prostate specific membrane antigen 1; FOLH 1; FOLH; Folylpoly gamma glutamate carboxypeptidase; GCP 2; GCP II; GCP2; GCPII; glutamate carboxylase II; Glutamate carboxypeptidase 2; glutamate carboxypeptidase II; Membrane glutamate carboxypeptidase; mGCP; N acetylated alpha linked acidic dipeptidase 1; N acetylated alpha linked acidic dipeptidase I; NAALAD 1; NAALAD1; NAALAdase; NAALADase I; prostate specific membrane antigen; PSM; pteroylpoly gamma glutamate carboxypeptidase; FOLH1_HUMAN. 抗体来源Rabbit 克隆类型Recombinant 克 隆 号B11A8 交叉反应Human 产品应用IHC-P=1:50-200,IHC-F=1:50-200,IF=1:50-200 not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. 理论分子量84 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KLH conjugated synthetic peptide derived from human FOLH1 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PMSA (FOLH1) is a type II transmembrane glycoprotein belonging to the M28 peptidase family. Three functionally distinct proteins are encoded, including folylpoly-gamma-glutamate carboxypeptidase in the intestine, N-acetylated alpha-linked acidic dipeptidase 1 in the brain, and prostate-specific membrane antigen in the prostate. A mutation in the intestinal form may be associated with impaired intestinal absorption of dietary folates, resulting in low blood folate levels and consequent hyperhomocysteinemia. The form expressed in the brain may be involved in a number of pathological conditions associated with glutamate excitotoxicity. The prostate form is up-regulated in cancerous cells and is used as an effective diagnostic and prognostic indicator of prostate cancer. This gene likely arose from a duplication event of a nearby chromosomal region. Alternative splicing gives rise to multiple transcript variants. Subunit : Homodimer. 靶点与功能
前列腺特异膜抗原(PSMA,FOLH1)是II型跨膜糖蛋白,分子量约100kDa,兼具叶酸水解酶与NAALADase活性,核心功能包括: 肿瘤特异性表达:在前列腺癌细胞中高表达(正常前列腺组织低表达),且与肿瘤分期、转移风险正相关,是前列腺癌诊断的“金标准”标志物; 靶向治疗载体:其胞外域可被抗体特异性识别,用于放射性核素标记(如¹⁷⁷Lu-PSMA-617)或免疫毒素偶联,实现精准杀伤癌细胞; 代谢调节作用:参与叶酸代谢与谷氨酸信号通路,可能通过微环境调控促进肿瘤进展。 实验操作关键要点
IHC-P前列腺癌组织染色(临床诊断): 抗原修复:采用EDTA缓冲液(pH8.0) 高压修复3分钟(121℃),冷却后用3% H₂O₂阻断内源性过氧化物酶; 阳性定位:前列腺癌细胞细胞膜强阳性,正常腺体细胞弱表达或阴性,转移灶(如骨、淋巴结)也可检测到膜定位信号; 染色优化:一抗推荐1:200稀释(5% BSA+TBST),4℃孵育过夜,EnVision二抗室温孵育30分钟,DAB显色控制在5分钟内。 WB检测(LNCaP细胞系): 样本处理:使用含蛋白酶抑制剂(1mM PMSF) 的RIPA裂解液(含1% Triton X-100)冰上裂解30分钟,14000g离心20分钟取上清;LNCaP细胞(PSMA高表达)为阳性对照,PC-3细胞(PSMA阴性)为阴性对照; 电泳条件:7.5% SDS-PAGE凝胶(因分子量较大),恒压80V浓缩胶、120V分离胶,转膜0.45μm PVDF膜(300mA恒流2小时); 抗体孵育:抗体1:1000稀释(5% BSA+TBST),4℃孵育过夜,HRP二抗1:5000室温孵育1小时,曝光时间60秒(同时观察100kDa单体和200kDa二聚体条带)。 IF共定位实验(膜蛋白验证): 推荐与E-钙粘蛋白(E-cadherin)抗体共染,使用Alexa Fluor 488(绿色,PSMA)和594(红色,E-cadherin),共聚焦显微镜下观察二者在细胞膜的共定位(提示PSMA的膜定位特性)。 公司正在出售的产品
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