Methods to screen for transcription factor-coactivator interactions
    5.
    发明授权
    Methods to screen for transcription factor-coactivator interactions 失效
    筛选转录因子 - 共激活因子相互作用的方法

    公开(公告)号:US6117638A

    公开(公告)日:2000-09-12

    申请号:US54238

    申请日:1998-04-02

    CPC分类号: C12N15/67

    摘要: This invention provides methods for modulating gene expression at the transcriptional level. In particular, the methods involve tethering a transcriptional coactivator to a DNA binding domain that is specific for a target nucleic acid sequence and contacting the coactivator with a transcription factor. The transcription factor triggers or represses transcription mediated by the coactivator. Methods for identifying compounds that are able to modulate gene expression are also provided.

    摘要翻译: 本发明提供了在转录水平调节基因表达的方法。 特别地,所述方法涉及将转录共激活因子绑定到对靶核酸序列特异的DNA结合结构域,并使共激活物与转录因子接触。 转录因子触发或抑制由共激活子介导的转录。 还提供了鉴定能够调节基因表达的化合物的方法。

    Superior mammalian expression system
    6.
    发明授权
    Superior mammalian expression system 失效
    优良的哺乳动物表达系统

    公开(公告)号:US5089397A

    公开(公告)日:1992-02-18

    申请号:US366342

    申请日:1989-06-14

    摘要: An expression system for recombinant production of a desired protein comprises CHO cells transformed with a DNA sequence having the desired protein coding sequence under control of the human metallothionein-II promoter. The cells can be maintained on serum-free medium and induced in the presence of an induction mediator. In addition, the system may include an enhancer element and/or a resistance-conferring gene to provide increased levels of expression. The system can process genomic as well as intronless DNA, and is capable of producing proteins which have the same characteristics as those obtained from native sources. Human growth hormone which is indistinguishable from that produced by the pituitary has been thus produced.

    摘要翻译: 用于重组产生所需蛋白质的表达系统包括用人金属硫蛋白-II启动子控制下用具有所需蛋白质编码序列的DNA序列转化的CHO细胞。 细胞可以保持在无血清培养基上并在诱导介质存在下诱导。 此外,该系统可以包括增强子元件和/或抗性赋予基因以提供增加的表达水平。 该系统可以处理基因组和内含子DNA,并且能够产生与从天然来源获得的蛋白质相同的蛋白质。 因此产生与垂体产生的人生长激素不可区分的人生长激素。