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    • 9. 发明申请
    • ERYTHROPOIETIN CONJUGATES WITH POLYETHYLENGLYCOL
    • 聚乙烯吡咯烷酮与聚乙烯醇共聚
    • WO0102017A3
    • 2001-08-09
    • PCT/EP0006009
    • 2000-06-28
    • HOFFMANN LA ROCHE
    • BURG JOSEFHILGER BERNDJOSEL HANS-PETER
    • A61K38/00A61K38/22A61K47/48A61P7/06A61P13/12A61P31/18A61P35/00C07K14/505
    • C07K14/505A61K38/00A61K47/60
    • Erythropoietin glycoprotein conjugates are disclosed, said conjugates comprise an erythropoietin glycoprotein having at least one free amino group and having the in vivo biological activity of causing bone marrow cells to increase production of reticulocytes and red blood cells and selected from the group consisting of human erythropoietin and analogs thereof which have the primary structure of human erythropoietin modified by the addition of from 1 to 6 glycosylation sites or by the rearrangement of at least one glycosylation site; said glycoprotein being covalently linked to form one to three lower-alkoxy poly(ethylene glycol) groups, each poly(ethylene glycol) group being covalently linked to the glycoprotein via a linker of the formula -C(O)-X-S-Y- with the C(O) of the linker forming an amide bond with one of said amino groups, wherein X and Y are as defined in the description and claims, the average molecular weight of each poly(ethylene glycol) moiety is from about 20 kilodaltons to about 40 kilodaltons, and the molecular weight of the conjugate is from about 51 kilodaltons to about 175 kilodaltons.
    • 所述缀合物包含具有至少一个游离氨基并且具有引起骨髓细胞的体内生物学活性以增加网织红细胞和红细胞的产生的促红细胞生成素糖蛋白,并选自 由人类红细胞生成素及其类似物组成的组,其具有通过加入1至6个糖基化位点或通过重排至少一个糖基化位点而修饰的促红细胞生成素的一级结构; 所述糖蛋白共价连接以形成一至三个低级烷氧基聚(乙二醇)基团,每个聚(乙二醇)基团通过式-C(O)的连接体与糖蛋白共价连接 )-XSY-,其中所述连接体的C(O)与所述氨基之一形成酰胺键,其中X和Y如说明书和权利要求中所定义,每个聚(乙二醇)部分的平均分子量为 约20千道尔顿至约40千道尔顿,共轭物的分子量为约51千道尔顿至约175千道尔顿。