Antitumor evaluation of novel phenothiazine derivatives that inhibit migration and tubulin polymerization against gastric cancer MGC-803 cells
作者:Nan Liu、Zhe Jin、Jing Zhang、Jianjun Jin
DOI:10.1007/s10637-018-0682-x
日期:2019.2.15
Two novel series of 1,2,3-triazole−phenothiazine hybrids and dithiocarbamate−phenothiazine hybrids were designed and synthesized by molecular hybridization strategy. Their antiproliferative activity against three gastric cancer cell lines (MKN28, MGC-803 and MKN45) were evaluated. Among them, hybrid 13h displayed the most potent inhibitory activity against gastric cancer MGC-803 cells with an IC50 value of 1.2 μM. Hybrid 13h could inhibit migration by regulating the expression level of N-cadherin, E-cadherin, Vimentin, and actived-MMP2. Furthermore, it could regulate wnt/β-catenin signaling pathway on MGC-803 cells in a concentration-dependent manner by decreasing the expression level of Wnt5α, β-catenin and TCF4. From the tubulin polymerization assay results in vitro, hybrid 13h was a novel tubulin polymerization inhibitor. By oral administration assay, compound 13h could effectively inhibit MGC-803 xenograft tumor growth in vivo without obvious side effects. In summary, compound 13h might be an orally active antitumor agent with clinical applications to the treatment of gastric cancer.
通过分子杂交策略设计合成了两种新型1,2,3-三唑−苯噻嗪杂合物和二硫氨基甲酸盐−苯噻嗪杂合物。评估了其对三种胃癌细胞系(MKN28、MGC-803和MKN45)的抗增殖活性。其中,杂合物13h对胃癌MGC-803细胞表现出最强的抑制活性,其IC50值为1.2 μM。杂合物13h能够通过调节N-钙粘附蛋白、E-钙粘附蛋白、波形蛋白和活化的MMP2的表达水平来抑制细胞迁移。此外,它还可以通过降低Wnt5α、β-连环蛋白和TCF4的表达水平,以浓度依赖的方式调节MGC-803细胞的Wnt/β-连环蛋白信号通路。从体外微管聚合实验结果来看,杂合物13h是新型微管聚合抑制剂。通过口服给药实验,化合物13h能够有效抑制MGC-803异种移植肿瘤的生长,且没有明显的副作用。总之,化合物13h可能是一种具有临床应用前景的口服抗肿瘤药物,用于治疗胃癌。