Inhibitors of alternative alleles of genes as a basis for cancer
therapeutic agents
    5.
    发明授权
    Inhibitors of alternative alleles of genes as a basis for cancer therapeutic agents 失效
    基因替代等位基因的抑制剂作为癌症治疗剂的基础

    公开(公告)号:US5702890A

    公开(公告)日:1997-12-30

    申请号:US379680

    申请日:1995-04-04

    申请人: David E. Housman

    发明人: David E. Housman

    摘要: This invention is directed to a therapeutic strategy, involving (1) identification of alternative alleles of genes coding for proteins vital for cell viability or cell growth and the loss of one of these alleles in cancer cells due to loss of heterozygosity (LOH) and (2) the development of inhibitors with high specificity for the single remaining alternative allele of the vital gene retained by the cancer cell after LOH. The inhibitors of this invention are specific for one alternative allele of a gene that codes for a protein vital to cell viability or cell growth. The targeted gene has two alternative alleles in which the inhibitors of this invention block only the one alternative allele still present in the cancer cells. Exposure to the inhibitor inhibits or kills cancer cells which have undergone LOH. Protein is still capable of being expressed in the normal cells exposed to the inhibitor by the unblocked alternative allele. This differential effect of the inhibitor on cancer cells and normal cells accounts for the high therapeutic index of the inhibitors of this invention when used as antineoplastic agents.

    摘要翻译: PCT No.PCT / US94 / 08473 Sec。 371日期:1995年4月4日 102(e)1995年4月4日PCT PCT 1994年7月26日PCT公布。 第WO95 / 03335号公报 日期1995年2月2日本发明涉及一种治疗策略,涉及(1)鉴定编码对于细胞活力或细胞生长至关重要的蛋白质的基因的替代等位基因以及由于杂合性丧失导致的癌细胞中这些等位基因之一的丧失 (LOH)和(2)开发针对LOH后癌细胞保留的重要基因的单一剩余替代等位基因具有高特异性的抑制剂。 本发明的抑制剂对于编码对细胞活力或细胞生长至关重要的蛋白质的基因的一个替代等位基因是特异性的。 靶向基因具有两种其他等位基因,其中本发明的抑制剂仅阻断癌细胞中仍然存在的一种替代等位基因。 暴露于抑制剂可抑制或杀死经历LOH的癌细胞。 蛋白质仍然能够通过未阻断的替代等位基因在暴露于抑制剂的正常细胞中表达。 当用作抗肿瘤剂时,抑制剂对癌细胞和正常细胞的这种差异作用占本发明抑制剂的高治疗指数。

    DNA sequence that encodes the multidrug resistance gene
    7.
    发明授权
    DNA sequence that encodes the multidrug resistance gene 失效
    编码多药耐药基因的DNA序列

    公开(公告)号:US5198344A

    公开(公告)日:1993-03-30

    申请号:US652311

    申请日:1991-02-06

    摘要: SPONSORSHIPThe invention described herein was supported by a grant from the Medical Research Council of Canada, grants from the National Institutes of Health and a grant from the Ajinomoto Corporation.

    摘要翻译: 与药物敏感的哺乳动物细胞中以显着增加的水平表达的mRNA同源的DNA在引入这些细胞时赋予对药物敏感的哺乳动物细胞上的各种药物的抗性。 公开了作为编码产物的氨基酸序列的DNA,其是多药耐药(mdr)基因的小家族成员之一的核苷酸序列。 还描述了赋予药物敏感性哺乳动物细胞多药耐药性表型的方法,检测mdr基因发生的方法,以及由mdr DNA编码的蛋白质特异的抗体。