ENGINEERED POLYPEPTIDES
    22.
    发明申请

    公开(公告)号:US20180237496A1

    公开(公告)日:2018-08-23

    申请号:US15934744

    申请日:2018-03-23

    IPC分类号: C07K14/705 G01N33/68

    摘要: Provided herein are polypeptides that bind to a blood-brain barrier (BBB) receptor, methods of generating such polypeptides, and methods of using the polypeptides to target a composition to a BBB receptor-expressing cell, e.g., for transport across the BBB. Also provided herein are transferrin receptor (TfR) constructs that comprise a monomeric TfR apical domain or one or more portions of the TfR apical domain which have been circularly permuted relative to the full-length TfR sequence.