Screening assay for the identification of agents which alter expression of PTH-rP
申请人:Osteo Screen
公开号:US20020061509A1
公开(公告)日:2002-05-23
A cell-based assay technique for identifying and evaluating chemical compounds and agents which affect the production of PTH-rP in mammalian cells and other cell types is set forth. Specifically, tumor cell lines are transformed with an expression vector comprising a DNA sequence encoding a promoter region of PTH-rP operatively linked to a reporter gene encoding an assayable product and cultured under conditions which permit expression of the assayable product. Chemical agents and factors can then be identified by their ability to modulate the expression of the reporter gene, thereby affecting the production of the assayable product. Such agents are then tested for inhibitory effects on tumor cell growth and for stimulatory effects on bone formation and repair.
本发明提出了一种基于细胞的检测技术,用于鉴定和评估影响哺乳动物细胞和其他细胞类型中 PTH-rP 生成的化合物和制剂。具体来说,用一种表达载体转化肿瘤细胞系,该载体包含一个 DNA 序列,编码 PTH-rP 的启动子区域,该序列与编码可检测产物的报告基因操作性连接,并在允许可检测产物表达的条件下进行培养。然后,可以通过化学制剂和因子调节报告基因的表达从而影响可检测产物的产生的能力来确定这些制剂和因子。然后再检测这些制剂对肿瘤细胞生长的抑制作用以及对骨形成和修复的刺激作用。