METHOD FOR SEPARATING MIGRASOMES FROM MACROPHAGES

    公开(公告)号:US20240336894A1

    公开(公告)日:2024-10-10

    申请号:US18402999

    申请日:2024-01-03

    Abstract: A simple and efficient method for separating migrasomes from macrophages is provided. The method separates migrasomes having a diameter range of 0.5 micrometers (μm) to 3 μm by intercepting through a filter and eluting through reverse filtration successfully. The separated migrasome has a vesicle-liked structure and wrinkles on its surface, and the separated migrasome has a diameter over 500 nanometers (nm). The separated migrasomes express their characteristic proteins PIGK, EOGT, and TSPAN4, but do not express specific markers TSG101 and ALIX of EVs, indicating that the separated migrasomes are a unique type of vesicles distinct from extracellular vesicles (EVs). The integrity of ribonucleic acids (RNA) carried by the migrasomes is not affected. The method for separating migrasomes from macrophages has the characteristics of simplicity, high efficiency, good controllability, good repeatability, and low cost, and large special equipment is not needed.

    METHOD FOR PRODUCING AN IMMUNOCONJUGATE
    4.
    发明公开

    公开(公告)号:US20240271101A1

    公开(公告)日:2024-08-15

    申请号:US18517468

    申请日:2023-11-22

    Abstract: Herein is reported a method for producing an immunoconjugate with reduced product- and process-related impurities by culturing mammalian cells that contain one or more nucleic acids encoding the immunoconjugate of interest in a cell culture medium, wherein the one or more nucleic acids are expressed under the conditions of cell culture comprising the steps of:



    culturing the mammalian cells in a cell culture medium at a first temperature and at a first pH;
    reducing the first temperature of the cell culture medium to a second temperature; and increasing the first pH of the cell culture medium to a second pH;
    recovering the immunoconjugate from the cells or the cell culture medium,

    and thereby producing the immunoconjugate.

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