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    • 6. 发明授权
    • Methods of using the A form of the progesterone receptor to screen for
antagonists of steroid intracellar receptor-mediated transcription
    • 使用A形式的孕酮受体的方法筛选类固醇细胞内受体介导的转录的拮抗剂
    • US5506102A
    • 1996-04-09
    • US144554
    • 1993-10-28
    • Donald P. McDonnell
    • Donald P. McDonnell
    • G01N33/566C07K14/72C12N5/10C12N15/09C12N15/12C12Q1/68G01N33/74
    • C07K14/721C12Q1/6897G01N33/743G01N2333/723Y10S435/81
    • Methods to screen for antagonists of steroid IR transcription as mediated by the PR-A isoform of the progesterone receptor are provided. Such cell-based methods include a cell in which PR-A is transcriptionally inactive containing asteroid IR other than PR, PR-A and a reporter vector that includes a promoter which is transcriptionally active in the presence of the steroid IR and an activator of said steroid IR, but is substantially transcriptionally inactive in the presence of PR-A. This cell is contacted with the activator of the steroid IR and a compound to be assayed, and the level of reporter product produced in the cell is measured and compared to the level of reporter product expressed in a similar cellular system absent PR-A as an indication of the potential antagonist activity of the compound being assayed. Also provided are an assay kit, a method of screening PR active compounds as ER antagonists and compounds that inhibit the transcriptional activity of asteroid IR in the presence of PR-A in a cellular context where PR-A is substantially transcriptionally inactive.
    • 提供了筛选由孕激素受体的PR-A同种型介导的类固醇IR转录拮抗剂的方法。 这种基于细胞的方法包括其中PR-A转录失活的细胞,其含有除PR,PR-A之外的小行星IR,以及包含在类固醇IR存在下具有转录活性的启动子的报告载体和所述 类固醇IR,但在PR-A存在下基本上转录无活性。 将该细胞与类固醇IR的活化剂和待测化合物接触,并测量在细胞中产生的报道产物的水平,并与不存在PR-A的类似细胞系统中表达的报道产物的水平进行比较 所测化合物潜在的拮抗剂活性的指示。 还提供了测定试剂盒,在PR-A基本上转录无活性的细胞环境中,PR-A存在下抑制PR活性化合物作为ER拮抗剂和抑制小行星IR的转录活性的化合物的方法。