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    • 8. 发明授权
    • Tumor marker protein and antibodies thereto for cancer risk assessment
or diagnosis
    • 肿瘤标志物蛋白及其抗体用于癌症风险评估或诊断
    • US5310653A
    • 1994-05-10
    • US12972
    • 1993-02-02
    • Margaret Hanausek-WalaszekThomas J. SlagaZbigniew Walaszek
    • Margaret Hanausek-WalaszekThomas J. SlagaZbigniew Walaszek
    • C07K14/47C07K16/18G01N33/574A61K37/08A61K39/00C07K15/18
    • G01N33/57476C07K14/47C07K16/18G01N33/5743G01N33/57438G01N33/57496
    • A tumor-associated marker protein was purified and antibodies thereto developed for cancer diagnosis and assessment of cancer risk associated with the long-term use of synthetic steroid hormones, both contraceptive and non-contraceptive, and other drugs that exhibit tumor promotional properties. The marker protein and antibodies thereto provided are interspecies immunologically cross-reactive.In summary, the marker p65 tumor-associated factor of the present invention has the following characteristics:(a) binds substantially completely to a phenyl hydrophobic interaction column in a buffer containing 20% ammonium sulfate and eluted at ca. 16% ammonium sulfate;(b) localized primarily in the nuclear envelopes with only small amounts present in the cytoplasm from where is released to the blood circulation in vivo or cell culture medium in vitro;(c) induced in normal, adult tissues by chemical carcinogens (initiators) but not by tumor promoters, the carcinogen-induced production being enhanced by the latter.Also disclosed herein are processes for purifying the 65 kDa tumor marker from plasma, tumor cytosol or ascitic fluid of carcinoma bearing animals; processes for producing antisera and purified antibody preparations to the 65 kDa tumor marker; and methods using antibody to the 65 kDa to diagnose or assess the likelihood of cancer.
    • 纯化了与肿瘤相关的标记蛋白,并且其抗体开发用于癌症诊断和评估与长期使用合成类固醇激素(避孕和非避孕药)以及其它展现肿瘤促进性质的药物相关的癌症风险。 标记蛋白及其提供的抗体是免疫交叉反应性的种间。 总之,本发明的标记p65肿瘤相关因子具有以下特征:(a)基本上完全与含有20%硫酸铵的缓冲液中的苯基疏水相互作用柱结合并在约5℃下洗脱。 16%硫酸铵; (b)主要在核包膜中定位,其中只有少量存在于细胞质中,其体内释放到体内血液循环或体外细胞培养基; (c)通过化学致癌物(引发剂)而不是由肿瘤启动子在正常的成年组织中诱导,致癌物诱导的生产由后者增强。 本文还公开了从承载动物的血浆,肿瘤细胞质或腹水中纯化65kDa肿瘤标志物的方法; 制备抗血清和纯化抗体制剂至65kDa肿瘤标志物的方法; 以及使用65kDa抗体诊断或评估癌症可能性的方法。