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    • 6. 发明申请
    • Super-humanized antibodies against respiratory syncytial virus
    • 针对呼吸道合胞病毒的超人源化抗体
    • US20050288491A1
    • 2005-12-29
    • US11061848
    • 2005-02-17
    • David WilsonSteffen NockJames Larrick
    • David WilsonSteffen NockJames Larrick
    • A61K39/42C07K16/10C07K16/44
    • C07K16/1027C07K2317/24C07K2317/56C07K2317/565
    • Disclosed herein are humanized antibodies that bind to an epitope on the F protein of respiratory syncytial virus. The humanized antibodies were designed by comparing the canonical CDR structure types of the CDRs from a non-human antibody (HNK20) to the canonical CDR structure types found in the human antibody germline sequences as the basis for selecting human variable region frameworks in a method denoted “super-humanization.” Human antibody variable regions having the same or similar canonical CDR structure types as the non-human CDR provided a subset of candidate sequences from which to select the human frameworks. Chimeric variable regions were made comprising the non-human CDRs grafted in corresponding locations into the human frameworks from the candidate human variable regions. Several humanized antibodies that bind the same antigen as HNK20 and that have low immunogenicity were thereby designed, including examples where the framework sequences have less than 65% amino acid identity to the non-human frameworks.
    • 本文公开了与呼吸道合胞病毒的F蛋白上的表位结合的人源化抗体。 通过将来自非人抗体(HNK20)的CDR的规范CDR结构类型与在人抗体种系序列中发现的规范CDR结构类型进行比较来设计人源化抗体,作为在所述方法中选择人可变区框架的基础 “超人性化”。 具有与非人CDR相同或相似的典型CDR结构类型的人抗体可变区提供了选择人骨架的候选序列的子集。 制备嵌合可变区,其包含从候选人可变区移植到人框架中的相应位置的非人CDR。 由此设计了结合与HNK20相同的抗原并且具有低免疫原性的几种人源化抗体,包括其中框架序列与非人框架具有小于65%氨基酸同一性的实例。