BETA-CATENIN, TCF-4, AND APC INTERACT TO PREVENT CANCER
    72.
    发明授权
    BETA-CATENIN, TCF-4, AND APC INTERACT TO PREVENT CANCER 失效
    β-连环蛋白的相互作用,TCF-4和APC导致预防癌症

    公开(公告)号:EP0972037B1

    公开(公告)日:2006-08-16

    申请号:EP98912994.5

    申请日:1998-03-20

    摘要: The APC tumor suppressor protein binds to beta -catenin, a protein recently shown to interact with Tcf/Lef transcription factors. Here, the gene encoding a Tcf family member that is expressed in colonic epithelium (hTcf-4) was cloned and characterized. hTcf-4 transactivates transcription only when associated with beta -catenin. Nuclei of APC colon carcinoma cells were found to contain a stable beta -catenin-hTCF-4 complex that was constitutively active, as measured by transcription of a Tcf reporter gene. Reintroduction of APC removed beta -catenin from hTcf4 and abrogated the transcriptional transactivation. Constitutive transcription of TCF target genes, caused by loss of APC function, may be a crucial event in the early transformation of colonic epithelium. It is also shown here that the products of mutant APC genes found in colorectal tumors are defective in regulating beta -catenin/Tcf-4 transcriptional activation. Furthermore, colorectal tumors with intact APC genes were shown to contain subtle activating mutations of beta -catenin that altered functionally significant phosphorylation sites. These results indicate that regulation of beta -catenin is critical to APC's tumor suppressive effect and that this regulation can be circumvented by mutations in either APC or beta -catenin.

    DNA sequences having anti-repressor activity
    78.
    发明公开
    DNA sequences having anti-repressor activity 有权
    DNS-Sequenzen mit anti-repressorAktivität

    公开(公告)号:EP1600510A2

    公开(公告)日:2005-11-30

    申请号:EP05076209.5

    申请日:2002-06-14

    申请人: ChromaGenics B.V.

    IPC分类号: C12N15/67 C12N15/85

    摘要: The invention is concerned with the systematic elucidation and identification of regulatory sequences. The invention provides among others screenings and detection methods with which regulatory sequences can be identified. The invention further provides regulatory sequences and use thereof in various fields such as, but not limited to protein production, diagnostics, transgenic plants and animals, and the therapeutic field.

    摘要翻译: 本发明涉及系统阐明和鉴定调控序列。 本发明提供了其中可以鉴定调节序列的筛选和检测方法。 本发明还提供了调节序列及其在各种领域中的应用,例如但不限于蛋白质生产,诊断,转基因植物和动物以及治疗领域。