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    • 14. 发明申请
    • CANCER TREATMENT USING ANTIBODIES THAT BING CELL SURFACE GRP78
    • 使用抗体治疗癌细胞表面GRP78
    • WO2014153056A3
    • 2014-09-25
    • PCT/US2014/028868
    • 2014-03-14
    • GILL, ParkashLIU, Ren
    • GILL, ParkashLIU, Ren
    • C07K16/00C12P21/08A61K39/395A61K39/00
    • This application provides, inter alia, antibodies or antigen-binding fragments thereof, targeting cell surface GRP78 expressed on tumor cells, tumor endothelial cells, and tumor initiating cancer cells. These anti-GRP78 antibodies, or antigen-binding fragments thereof, have a high affinity for GRP78 and are less immunogenic compared to their unmodified parent antibodies in a given species, e.g., a human, and function to inhibit GRP78. Importantly, these isolated novel antibodies and antigen-binding fragments thereof, attenuate PI3K signaling and promote apoptosis in tumor cells, while leaving normal cells unaffected. The antibodies and antigen-binding fragments are useful for UPR- targeted cancer therapeutic treatments.
    • 本申请尤其提供了靶向在肿瘤细胞,肿瘤内皮细胞和肿瘤起始癌细胞上表达的细胞表面GRP78的抗体或其抗原结合片段。 这些抗GRP78抗体或其抗原结合片段对GRP78具有高亲和力,并且与其在给定物种(例如人)中的未修饰亲本抗体相比免疫原性较低,并具有抑制GRP78的功能。 重要的是,这些分离的新型抗体及其抗原结合片段减弱PI3K信号传导并促进肿瘤细胞凋亡,同时使正常细胞不受影响。 抗体和抗原结合片段可用于UPR靶向癌症治疗性治疗。