Passive targeting of cytotoxic agents
    5.
    发明申请
    Passive targeting of cytotoxic agents 审中-公开
    被动靶向细胞毒剂

    公开(公告)号:US20070190060A1

    公开(公告)日:2007-08-16

    申请号:US10592859

    申请日:2005-03-15

    IPC分类号: A61K39/395

    摘要: The present invention provides methods of treating cancer cells comprising administering to a patient in need thereof a therapeutically effective amount of a non-specific antibody conjugated to a cytotoxin, wherein the cancer cells do not express an antigen to which the non-specific antibody binds. In one embodiment, the non-specific antibody is an anti-CD33 antibody (e.g., hp67.6), an anti-CD22 antibody (e.g., g5/44), or an anti-CD20 antibody (e.g., rituximab). In another embodiment, the non-specific antibody does not bind a human antigen. The cancer cells treated can be, e.g., gastric, colon, non-small cell lung (NSCLC), breast, epidermoid, or prostate carcinoma cells. In one embodiment, the cytotoxin is calicheamicin. Calicheamicin can be conjugated to the non-specific antibody using a 4-(4′-acetylphenoxy)butanoic acid (AcBut) or (3-Acetylphenyl)acetic acid (AcPAc) linker. In another embodiment, the antibody to the non-specific antigen conjugated to a cytotoxin is administered in combination with a bioactive agent, e.g., an anti-cancer agent.

    摘要翻译: 本发明提供了治疗癌细胞的方法,包括向有需要的患者施用治疗有效量的与细胞毒素缀合的非特异性抗体,其中所述癌细胞不表达非特异性抗体结合的抗原。 在一个实施方案中,非特异性抗体是抗CD33抗体(例如hp67.6),抗CD22抗体(例如g5 / 44)或抗CD20抗体(例如利妥昔单抗)。 在另一个实施方案中,非特异性抗体不结合人抗原。 所治疗的癌细胞可以是例如胃,结肠,非小细胞肺(NSCLC),乳腺,表皮样或前列腺癌细胞。 在一个实施方案中,细胞毒素是加利车霉素。 可以使用4-(4'-乙酰基苯氧基)丁酸(AcBut)或(3-乙酰基苯基)乙酸(AcPAc)接头将加利车霉素与非特异性抗体缀合。 在另一个实施方案中,与细胞毒素缀合的非特异性抗原的抗体与生物活性剂,例如抗癌剂组合施用。