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1.PROTAC分子通过其一端的靶蛋白配体(POI Ligand)特异性识别并结合靶蛋白,通过其另一端的E3泛素连接酶配体(E3 Ligase Ligand)特异性识别并结合E3 Ligase;
2.形成P O I - P R O T A C - E 3ligase三元复合体;
3.在此三元复合体中,靶蛋白POI被E3 ligase泛素化修饰,泛素化修饰了的POI随后被蛋白酶体识别并降解,由此抑制靶蛋白的功能
HEK 293T稳转株细胞(POI-EGFP)高通量筛选
Percentage reduction in POI-EGFP fusion protein level
Western Blot(WB)
Fig. 2 Western Blot Images showing POI degradation by PROTAC-POI
细胞毒性实验(CCK-8或CTG法)
机制检测
Fig. 2 Western Blot Images showing POI degradation by PROTAC-POI
Proteasome system mediates PROTAC-POI-induced POI Degradation
肿瘤细胞的增殖抑制效应
Proliferation inhibition effects of POI in the indicated cell lines at 120 h after treatment
CDX小鼠肿瘤模型
PDX小鼠肿瘤模型
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