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    • 9. 发明授权
    • Hybrid protein C
    • 杂交蛋白C
    • US5753224A
    • 1998-05-19
    • US463585
    • 1995-06-05
    • Donald C. FosterRichard D. Holly
    • Donald C. FosterRichard D. Holly
    • C12N9/60C12N9/64A61K38/00A61K35/14A61K38/48G01N33/53
    • C12N9/6464C12N9/60C12Y304/21069C07K2319/00
    • Human protein C molecules are modified to provide increased resistance to inactivation by human plasma factors while retaining substantially the biological activity of human protein C. The modifications are generally to the heavy chain of protein C, which chain may be substituted with a protein C heavy chain of non-human origin, such as bovine, yielding a chimeric protein C molecule. The human protein C heavy chain may also be modified to be human-like, in that at least one amino acid from a non-human sequence may be substituted for the corresponding residue(s) of the human sequence, thereby allowing the molecule to retain substantially human characteristics yet having increased resistance to inactivation. Also included are methods for producing the modified protein C molecules and pharmaceutical compositions thereof. The modified molecules, having an increased half-life in human plasma, are particularly useful for treating coagulation-related disorders, such as protein C deficiency or thrombosis, or for promoting fibrinolysis in a patient.
    • 人蛋白C分子被修饰以提供对人血浆因子的失活增强的抗性,同时保留人蛋白C的生物活性。修饰通常是蛋白C的重链,该链可被C蛋白重链取代 非人源的,如牛,产生嵌合蛋白C分子。 人蛋白C重链也可以被修饰为人样,因为来自非人序列的至少一个氨基酸可以被人序列的相应残基取代,从而允许分子保留 基本上人的特征,但具有增加的失活抗性。 还包括生产修饰的蛋白C分子的方法及其药物组合物。 在人血浆中具有增加的半衰期的改性分子对于治疗凝血相关疾病如蛋白C缺乏或血栓形成或促进患者的纤维蛋白溶解特别有用。