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    • 2. 发明授权
    • Glycoproteins and processes for their production
    • 糖蛋白及其生产工艺
    • US4481137A
    • 1984-11-06
    • US467840
    • 1983-02-18
    • Haruo OhnishiKazuo YamaguchiYasuo SuzukiEi MochidaNobuo Mochida
    • Haruo OhnishiKazuo YamaguchiYasuo SuzukiEi MochidaNobuo Mochida
    • A61K38/00C07K14/47C07K14/52C12P21/00C07G7/00
    • C07K14/47C07K14/52A61K38/00Y10S514/908Y10S530/806Y10S530/809Y10S530/828Y10S530/829
    • A glycoprotein obtained from the cells of human or non-human warm-blooded animals having an anti-tumor effect and characterized by the following properties:(a) molecular weight: in the range from 7,000 to 90,000 by Sephadex gel filtration or SDS gel electrophoresis;(b) color reactions: it exhibits a color indicating proteins in the Lowry reaction, exhibits a color indicating peptide bonds and amino acids in the ninhydrin reaction after hydrolysis with hydrochloric acid, and exhibits a color indicating sugars in the phenol-sulfuric acid reaction, the anthrone-sulfuric acid reaction, the indole-sulfuric acid reaction and the tryptophane-sulfuric acid reaction;(c) appearance and solubility: white powder soluble in water, aqueous sodium chloride and phosphate buffer, and sparingly soluble in benzene, hexane and chloroform;(d) sugar content: sugar content is 8-45%, 6-28% of the total sugar being hexoses, 1-11% being hexosamines and 1-6% being sialic acids;(e) stability: stable in an aqueous solution of pH 2.0, pH 7.0 or pH 11.0 at 4.degree. C. for 24 hours or longer and in an aqueous solution of pH 7.0 at 60.degree. C. for 3 hours or longer; and(f) cytotoxicity: it selectively damages tumor cells without substantially damaging normal cells.
    • 从具有抗肿瘤作用的人或非人温血动物的细胞获得的糖蛋白,其特征在于以下性质:(a)分子量:通过Sephadex凝胶过滤或SDS凝胶电泳在7,000至90,000的范围内 ; (b)显色反应:在Lowry反应中表现出表示蛋白质的颜色,在用盐酸水解后,在茚三酮反应中表现出表示肽键和氨基酸的颜色,并表现出苯酚 - 硫酸反应中的糖的颜色, 蒽酮 - 硫酸反应,吲哚 - 硫酸反应和色氨酸 - 硫酸反应; (c)外观和溶解性:白色粉末溶于水,氯化钠水溶液和磷酸盐缓冲液,微溶于苯,己烷和氯仿; (d)糖含量:糖含量为8-45%,总糖的6-28%为己糖,1-11%为己糖胺,1-6%为唾液酸; (e)稳定性:在pH2.0,pH7.0或pH11.0的水溶液中在4℃下稳定24小时以上,在pH7.0的水溶液中在60℃下稳定3小时以上; 和(f)细胞毒性:它选择性地损伤肿瘤细胞,而不会对正常细胞造成实质的损害。