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    • 7. 发明公开
    • Erythropoietin fusion protein
    • 促红细胞生成素融合蛋白
    • EP1961821A1
    • 2008-08-27
    • EP07003659.5
    • 2007-02-22
    • Polymun Scientific Immunbiologische Forschung GmbH
    • Weik, RobertHemetsberger, ThomasRedl, Heinz
    • C12N15/62C07K14/505A61K38/18
    • C07K14/505A61K38/1816C07K2319/30
    • The present invention relates to recombinant fusion proteins wherein erythropoietin (EPO) is linked via its C-terminus to an Fc fragment, and wherein said recombinant fusion proteins are further carbamoylated at the primary amines of the fusion protein. More specifically the invention relates to carbamoylated EPO-Fc fusion proteins, wherein at least one, preferably two or more, lysine amine residues and/or the N-terminal amino acid of said fusion protein are carbamoylated. The carbamoylated EPO-Fc fusion proteins of the present invention having a reduced hematopoietic activity whereas the tissue regenerative activity, i.e. the nerval cell regenerative activity remains unaltered or is even enhanced as compared to unmodified EPO-Fc fusion proteins.
      The invention further relates to a process for the manufacture of such fusion proteins and to pharmaceutical compositions containing them, as well as to the use of such fusion proteins and pharmaceutical compositions for medical therapy.
    • 本发明涉及重组融合蛋白,其中促红细胞生成素(EPO)通过其C-末端与Fc片段连接,并且其中所述重组融合蛋白在融合蛋白的伯胺处进一步氨甲酰化。 更具体地说,本发明涉及氨基甲酰化EPO-Fc融合蛋白,其中所述融合蛋白的至少一个,优选两个或更多个赖氨酸胺残基和/或N-末端氨基酸被氨基甲酰化。 与未修饰的EPO-Fc融合蛋白相比,本发明的氨甲酰化EPO-Fc融合蛋白具有降低的造血活性,而组织再生活性即神经细胞再生活性保持不变或甚至增强。 本发明还涉及制造这种融合蛋白的方法和含有它们的药物组合物,以及这种融合蛋白和药物组合物用于医学治疗的用途。