Method for purifying PEGylated erythropoietin

    公开(公告)号:US20250136639A1

    公开(公告)日:2025-05-01

    申请号:US18645245

    申请日:2024-04-24

    Abstract: Herein is reported a method for the purification of a protein comprising erythropoietin and a single poly (ethylene glycol) residue from reaction by-products or not reacted starting material by a cation exchange chromatography method. It has been found that by employing a cation exchange Toyopearl® SP-650 chromatography material and employing a second wash step with an increased pH value compared to the first wash step a fusion protein of erythropoietin and a single poly (ethylene glycol) residue can be obtained in a single step with high purity and yield and suitability for large scale applications.

    FOLR1 PROTEASE-ACTIVATABLE T CELL BISPECIFIC ANTIBODIES

    公开(公告)号:US20250092128A1

    公开(公告)日:2025-03-20

    申请号:US18901300

    申请日:2024-09-30

    Abstract: The present invention generally relates to improved Protease-activatable antigen-binding molecules that comprise an anti-idiotype-binding moiety which reversibly masks a CD3 antigen binding moiety of the molecule. Furthermore, the invention relates to novel Protease-cleavable peptide linkers and their used in such Protease-activatable antigen-binding molecules. In addition, the present invention relates to polynucleotides encoding such Protease-activated T cell binding molecules, and vectors and host cells comprising such polynucleotides. The invention further relates to methods for producing the Protease-activated T cell binding molecules of the invention, and to methods of using the same, e.g., in the treatment of disease.

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