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    • 8. 发明授权
    • Anti-human ovarian cancer immunotoxins and methods of use thereof
    • 抗人卵巢癌免疫毒素及其使用方法
    • US4956453A
    • 1990-09-11
    • US69720
    • 1987-07-06
    • Michael J. BjornArthur E. FrankelWalter J. LairdDavid B. RingJeffrey L. Winkelhake
    • Michael J. BjornArthur E. FrankelWalter J. LairdDavid B. RingJeffrey L. Winkelhake
    • A61K38/00A61K47/48C07K16/30
    • C07K16/30A61K47/48638A61K38/00Y10S424/804Y10S424/807Y10S514/885Y10S530/808Y10S530/861Y10S530/864Y10S530/866
    • Immunotoxins comprising a cytotoxic moiety and an antigen binding portion selected from the group consisting of Fab, Fab' and F(ab').sub.2 fragments of a monoclonal antibody, which binds to human ovarian cancer tissue, having one of the following capabilities are claimed: cytotoxic ID.sub.50 of about 10 nM or less against human ovarian cancer cells, retardation of human ovarian cancer tumor growth in mammals, or extension of survival of a mammal carrying a human ovarian cancer tumor. Antigens or epitopes to which the monoclonal antibodies bind are identified and characterize the immunotoxins. In a preferred embodiment an immunotoxin comprising at least an antigen binding portion of a monoclonal antibody, which binds to human transferrin receptor, but does not block binding of transferrin to the receptor, is described and claimed. Immunotoxin comprising the F(ab').sub.2 region of the antitransferrin monoclonal antibody are also claimed.Methods of killing human ovarian cancer cells, retarding the growth of human ovarian cancer tumors in mammals and extending the survial of mammals carrying human ovarian cancer tumors are claimed.
    • 要求具有下列能力之一的包含细胞毒素部分和选自Fab,Fab'和F(ab')2结合部分的单克隆抗体结合人卵巢癌组织的抗原结合部分的免疫毒素: 对人卵巢癌细胞约10nM或更少的细胞毒性ID50,哺乳动物中人卵巢癌肿瘤生长的延迟或携带人卵巢癌肿瘤的哺乳动物的存活的延长。 识别单克隆抗体结合的抗原或表位,并表征免疫毒素。 在优选的实施方案中,描述并要求保护包含至少结合人转铁蛋白受体但不阻断转铁蛋白与受体结合的单克隆抗体的抗原结合部分的免疫毒素。 还要求保护包含抗转铁蛋白单克隆抗体的F(ab')2区的免疫毒素。 要求杀死人类卵巢癌细胞的方法,延缓哺乳动物中人卵巢癌肿瘤的生长并延长携带人卵巢癌肿瘤的哺乳动物的存活。