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    • 7. 发明授权
    • Unique protein marker for bladder cancer
    • 独特的蛋白质标记为乳腺癌
    • US5221612A
    • 1993-06-22
    • US318790
    • 1989-03-03
    • Haiyen E. ZhauRichard J. Babaian
    • Haiyen E. ZhauRichard J. Babaian
    • G01N33/50C07K16/30G01N33/53G01N33/574G01N33/577
    • C07K16/3038G01N33/57446Y10S436/813Y10S436/825Y10S436/828Y10S530/806Y10S530/828Y10S530/834Y10T436/25Y10T436/25375Y10T436/255
    • The present invention involves a method for detecting bladder cancer in a subject. The method preferably comprises first collecting a urine sample from the subject. The presence of a proteinaceous substance having a molecular weight of about 180 kDa according to its relative electrophoretic migration rate through detergent-containing polyacrylamide gel is then measured. This substance reversibly binds concanavalin A and is complexed with gamma globulin while in the urine. The gamma globulin complex binds to Staphlococcal protein A. Said proteinaceous substance, when present in detectable amount, is an indicator of bladder cancer.The method of the present invention for diagnosing bladder cancer in a subject may also be described as comprising detection in a urine sample from said subject of a proteinaceous substance having a molecular weight of about 180 kDa and being unreactive with antibodies specifically binding to carcinoembryonic antigen or epidermal growth factor receptor. When an antibody is used for the present method of diagnosis, an initial step for preparing an antibody specifically binding a urinary 180 kDa antigen present in urine of bladder cancer victims is carried out. This antibody of course may be prepared by others and merely obtained by commercial purchase. In any case said antibody may be used to detect the bladder cancer-specific 180 kDa antigen of the present invention in patient urine. This antibody is most preferably monoclonal or may be polyclonal.
    • 本发明涉及用于检测受试者膀胱癌的方法。 该方法优选地包括首先从受试者收集尿液样品。 然后测量根据其通过含有去污剂的聚丙烯酰胺凝胶的相对电泳迁移速率,分子量为约180kDa的蛋白质物质的存在。 该物质可逆地结合刀豆蛋白A,并与尿球中的γ球蛋白复合。 γ球蛋白复合物与葡萄球菌蛋白A结合。所述蛋白质物质以可检测的量存在时,是膀胱癌的指标。 用于诊断受试者的膀胱癌的本发明的方法还可以被描述为包括在来自所述受试者的尿液样品中检测分子量为约180kDa的蛋白质物质,并且与特异性结合癌胚抗原的抗体不反应或 表皮生长因子受体 当本发明的诊断方法使用抗体时,进行制备特异性结合膀胱癌患者尿中存在的尿180kDa抗原的抗体的初始步骤。 这种抗体当然可以由他人制备,只能通过商业购买获得。 在任何情况下,所述抗体可用于在患者尿液中检测本发明的膀胱癌特异性180kDa抗原。 该抗体最优选是单克隆抗体或可以是多克隆的。