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    • 32. 发明授权
    • Enzyme catalyzed therapeutic activation
    • 酶催化治疗激活
    • US06683061B1
    • 2004-01-27
    • US09856127
    • 2001-10-10
    • H. Michael ShepardMing Fai ChanMichael P. Groziak
    • H. Michael ShepardMing Fai ChanMichael P. Groziak
    • A01N4304
    • C07H19/06
    • This invention provides novel substrate compounds that selectively inhibit the proliferation of pathological cells, for example, pathological calls that endogenously overexpress a target enzyme that confers resistance to biologic and chemotherapeutic agents. The enzyme acts on a substrate compound to 1) convert it to a cellular toxin and/or 2) release a toxic byproduct. In one embodiment, the activity of the target enzyme has been greatly enhanced in a target cell as a result of loss of tumor suppressor function and/or selection resulting from previous exposure to chemotherapy. In another embodiment, the pathological cell contains a target enzyme that is an expression product of an infectious agent in the cell. Further provided by this invention is a method for treating a subject by delivering to the subject a prodrug as described herein. The prodrugs of this invention may be used alone or in combination with other chemotherapeutics or alternative anti-cancer therapies such as radiation.
    • 本发明提供了选择性抑制病理细胞增殖的新型底物化合物,例如内源性过度表达赋予生物和化学治疗剂抗性的靶酶的病理学调节。 该酶作用于底物化合物以1)将其转化为细胞毒素和/或2)释放有毒副产物。 在一个实施方案中,由于先前暴露于化学疗法导致的肿瘤抑制功能和/或选择的丧失,靶细胞的活性已大大增强。 在另一个实施方案中,病理细胞含有作为细胞中感染因子的表达产物的靶酶。 本发明进一步提供的是通过向受试者递送本文所述的前药来治疗受试者的方法。 本发明的前药可以单独使用或与其它化学治疗剂或替代的抗癌疗法如辐射一起使用。