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    • 56. 发明申请
    • HUMAN CARCINOMA ANTIGEN (HCA), HCA ANTIBODIES, HCA IMMUNOASSAYS, METHODS OF IMAGING AND THERAPY
    • 人类癌症抗体(HCA),HCA抗体,HCA免疫测定,成像和治疗方法
    • WO1994018562A1
    • 1994-08-18
    • PCT/US1994001379
    • 1994-02-07
    • EPIGEN, INC.
    • EPIGEN, INC.CODINGTON, John, F.HAAVIK, Svein
    • G01N33/53
    • A61K39/0011A61K38/00A61K39/00A61K48/00A61K51/1078A61K2039/51A61K2123/00C07K14/4748C07K16/30C07K16/4266G01N33/57469G01N33/57484G01N33/57488G01N33/686G01N2333/705Y10S436/813
    • A glycoprotein antigen which is generally characteristic of human carcinomas, regardless of the tissue associated with the carcinoma -- human carcinoma antigen (HCA) -- and which is generally not present on normal human cells. Immunodeterminant-containing fragments of HCA substantially separated from elements of HCA's naturally occurring environment are also disclosed. HCA is generally characterized by: a) a molecular weight in excess of 750,000; b) carbohydrate moieties characteristic of mucin-type glycoproteins and comprising a relatively high proportion of sialic acid, galactose, and N-acetygalactosamine residues (e.g., at least 50 % of the carbohydrate residues are sialic acid, galactose, or N-acetylgalactosamine residues); c) an isoelectric point below pH 3.0; d) presence generally on human carcinoma cells; e) absence generally from non-transformed human cells; f) at least one immunodeterminant that specifically reacts with anti-murine epiglycanin antibody AE3; and g) general insolubility in aqueous fluids (e.g., a phosphoric acid or an HC1 solution) below pH 2.0. Also disclosed are antibodies to HCA, immunoassays for HCA, in vivo imaging using HCA-binding antibodies and therapeutics using HCA or anti-idiotypic HCA antibodies.
    • 通常是人类癌症特征性的糖蛋白抗原,不管与癌 - 人癌抗原(HCA)相关的组织如何,并且其通常不存在于正常人细胞上。 还公开了与HCA天然存在环境的元素基本分离的HCA的含有免疫球蛋白的片段。 HCA的特征通常是:a)分子量超过75万; b)粘蛋白型糖蛋白特征性的碳水化合物部分并且包含较高比例的唾液酸,半乳糖和N-乙酰半乳糖胺残基(例如,至少50%的碳水化合物残基是唾液酸,半乳糖或N-乙酰半乳糖胺残基) ; c)低于pH3.0的等电点; d)一般存在于人类癌细胞上; e)通常来自未转化的人细胞的缺失; f)至少一种与抗鼠表不但抗体AE3特异性反应的免疫决定剂; 和g)在低于pH2.0的水溶液(例如磷酸或HCl溶液)中的一般不溶性。 还公开了针对HCA的抗体,HCA的免疫测定,使用HCA结合抗体的体内成像和使用HCA或抗独特型HCA抗体的治疗剂。