TRANSFERRIN RECEPTOR-BINDING POLYPEPTIDES AND USES THEREOF

    公开(公告)号:US20210130485A1

    公开(公告)日:2021-05-06

    申请号:US16921506

    申请日:2020-07-06

    Abstract: The present disclosure relates generally to Fc polypeptide dimers that contain a non-native transferrin receptor (TfR) binding site, do not substantially deplete reticulocytes in vivo, but retain binding to the Fcγ receptor (FcγR). The present disclosure also relates to an Fc polypeptide dimer that contains a non-native site that specifically binds TfR on one of the Fc polypeptides; a modification or modifications on the Fc polypeptide containing the TfR-binding site that reduces FcγR binding when bound to TfR, where the other Fc polypeptide does not contain a TfR-binding site but retains FcγR binding.

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