Antibody selection method
    3.
    发明授权

    公开(公告)号:US11668722B2

    公开(公告)日:2023-06-06

    申请号:US16657753

    申请日:2019-10-18

    IPC分类号: G01N33/68 C07K16/18 C07K16/28

    摘要: Herein is reported a method for selecting an antibody with a systematic clearance in cynomolgus monkeys of less than 8 mL/kg/day comprising the steps of measuring the retention time of the antibody on performing an FcRn affinity chromatography with a positive linear pH gradient and on a heparin affinity chromatography with a positive linear conductivity/salt gradient, and selecting an antibody that has a relative retention time on the FcRn affinity chromatography column is less than 1.78 times the retention time difference between peaks 2 and 3 the retention time of preparation of an oxidized anti-Her3 antibody of SEQ ID NO: 03 and 04, and a relative retention time on the heparin affinity chromatography column is less than 0.87 times the retention time of an anti-pTau antibody of SEQ ID NO: 01 and 02.

    IN VITRO PREDICTION OF IN VIVO HALF-LIFE
    7.
    发明申请

    公开(公告)号:US20170227547A1

    公开(公告)日:2017-08-10

    申请号:US15271091

    申请日:2016-09-20

    IPC分类号: G01N33/68 B01D15/38 B01D15/16

    摘要: Herein is reported a method for determining the presence of antibody-Fab-FcRn interaction in an antibody-Fc-FcRn complex influencing the in vivo half-life comprising the steps of a) determining the retention time of the antibody on an FcRn affinity chromatography column with a positive linear pH gradient elution in the presence of a first sodium chloride concentration, and b) determining the retention time of the antibody on an FcRn affinity chromatography column with a positive linear pH gradient elution in the presence of a second sodium chloride concentration, whereby the presence of antibody-Fab-FcRn interaction in an antibody-Fc-FcRn complex influencing the in vivo half-life is determined if the retention time determined in step a) and the retention time determined in step b) are substantially different.