ANTI-PD-L1/ANTI-CD47 BISPECIFIC ANTIBODY

    公开(公告)号:US20210230277A1

    公开(公告)日:2021-07-29

    申请号:US16769108

    申请日:2018-12-01

    IPC分类号: C07K16/28 C07K16/46

    摘要: Provided are an anti-PD-L1/anti-CD47 bispecific antibody that has natural IgG characteristics and is in a highly stable heterodimer form without the heavy chain and light chain being mismatched, and a preparation method therefor. Either the first Fc chain or second Fc chain of the bispecific antibody comprises amino acid substitutions at positions 366 and 399, and the other comprises amino acid substitutions at positions 351, 407 and 409.