作者:Xing-Jie Dai、Ying Liu、Ning Wang、He-Xiang Chen、Jiang-Wan Wu、Xiao-Peng Xiong、Shi-Kun Ji、Ying Zhou、Liang Shen、Shao-Peng Wang、Hong-Min Liu、Hui-Min Liu、Yi-Chao Zheng
DOI:10.1016/j.ejmech.2023.115684
日期:2023.11
lysine specific demethylase 1 (LSD1) has become an emerging and promising target for cancer immunotherapy. Herein, based on our previously reported LSD1 inhibitor DXJ-1 (also called 6x), a series of novel acridine-based LSD1 inhibitors were identified via structure optimizations. Among them, compound 5ac demonstrated significantly enhanced inhibitory activity against LSD1 with an IC50 value of 13 nM,
最近,组蛋白赖氨酸特异性去甲基酶 1 (LSD1) 已成为癌症免疫治疗的新兴且有前景的靶点。在此,基于我们之前报道的LSD1抑制剂DXJ-1(也称为6x),通过结构优化鉴定了一系列新型吖啶基LSD1抑制剂。其中,化合物5ac对LSD1的抑制活性显着增强,IC 50值为13 nM,比DXJ-1(IC 50 = 73 nM)强约4.6倍。分子对接研究表明,化合物5ac可以很好地对接至LSD1的活性位点。进一步的机制研究表明,化合物5ac抑制胃癌细胞的干细胞性和迁移,并降低BGC-823和MFC细胞中PD-L1的表达。更重要的是,当用化合物5ac处理时,BGC-823 细胞对 T 细胞杀伤更加敏感。此外,化合物5ac还可以抑制小鼠体内的肿瘤生长。总之,5ac可以作为增强胃癌免疫反应的有前途的候选者。