Activatable anti-CTLA-4 antibodies and uses thereof

    公开(公告)号:US11117968B2

    公开(公告)日:2021-09-14

    申请号:US16347522

    申请日:2017-11-02

    Abstract: Provided herein are activatable anti-human CTLA-4 antibodies comprising a heavy chain comprising a VH domain and a light chain comprising a masking moiety (MM), a cleavable moiety (CM), and a VL domain. Such activatable anti-human CTLA-4 antibodies have CTLA-4 binding activity in the tumor microenvironment, where the masking moiety is removed by proteolytic cleavage of the cleavable moiety by tumor-specific proteases, but exhibit greatly reduced binding to CTLA-4 outside the tumor. In this way, the activatable anti-human CTLA-4 antibodies of the present invention retain anti-tumor activity while reducing the side effects associated with anti-CTLA-4 activity outside the tumor.

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