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    • 34. 发明专利
    • Cytocidal modified immunoglobulin and its preparation
    • CYTOCIDAL修饰的免疫球蛋白及其制备
    • JPS59134734A
    • 1984-08-02
    • JP580783
    • 1983-01-19
    • Teijin Ltd
    • KATOU YOSHINORIUMEMOTO NAOJITAKEDA YUMIKOHARA TAKESHI
    • A61K39/395A61K47/48A61P35/00A61P43/00
    • A61K47/6881A61K47/6809Y10S530/809Y10S530/83
    • NEW MATERIAL:A cytocidal modified immunoglobulin shown by the formula I (Ab is immunoglobulin or its fragment; R is bifunctional organic group; n is 1W20).
      EXAMPLE: A modified immunoglobulin of 1a-(4-succinimidyloxycarbonylbutyryl)- 7-amino-9a-methoxymitosan shown by the formula II and mouse monoclonal antibody IgG2b of anti MM46.
      USE: A carcinostatic agent showing specifically inhibitory activity against propagation of the target cell to be killed.
      PROCESS: A mitomycin C derivative shown by the formula III (X is residue of active ester, derived from alcohol) is reacted with immunoglobulin or its fragment to give a modified immunoglobulin shown by the formula I . The reaction is carried out by adding a compound shown by the formula III dissolved in a small amount of a solvent (e.g., acetone) at 0W40°C to a buffer solution at 5W 8pH.
      COPYRIGHT: (C)1984,JPO&Japio
    • 新物质:式I所示的杀细胞变性免疫球蛋白(Ab为免疫球蛋白或其片段; R为双功能有机基团; n为1-20)。 实施例:由式II表示的1a-(4-琥珀酰亚氨基氧羰基丁酰基)-7-氨基-9a-甲氧基淀粉和抗MM46的小鼠单克隆抗体IgG2b的修饰的免疫球蛋白。 用途:对待杀死的靶细胞的增殖具有特异性抑制活性的制癌剂。 方法:将式III表示的丝裂霉素C衍生物(X是衍生自醇的活性酯的残基)与免疫球蛋白或其片段反应,得到式I所示的经修饰的免疫球蛋白。 通过将溶于少量溶剂(例如丙酮)的式III化合物在0-40℃下加入到5-8pH的缓冲溶液中进行反应。