Novel 1,3,4-Selenadiazole-Containing Kidney-Type Glutaminase Inhibitors Showed Improved Cellular Uptake and Antitumor Activity
作者:Zhao Chen、Di Li、Ning Xu、Jinzhang Fang、Yan Yu、Wei Hou、Haoqiang Ruan、Panpan Zhu、Renchao Ma、Shiying Lu、Danhui Cao、Rui Wu、Mowei Ni、Wei Zhang、Weike Su、Benfang Helen Ruan
DOI:10.1021/acs.jmedchem.8b01198
日期:2019.1.24
improve the in vivo activity, we explored a bioisostere replacement of the sulfur atom in bis-2-(5-phenylacetamido-1,2,4-thiadiazol)ethyl sulfide and CB839 analogues with selenium using a novel synthesis of the selenadiazole moiety from carboxylic acids or nitriles. The resulting selenadiazole compounds showed enhanced KGA inhibition, more potent induction of reactive oxygen species, improved inhibition
肾脏型谷氨酰胺酶[KGA /同工酶谷氨酰胺酶C(GAC)]正在成为癌症化疗中重要的肿瘤代谢靶标。它的变构抑制剂CB839在癌症治疗中显示了早期前景,但在体内癌症模型中的疗效有限。为了提高体内活性,我们使用硒的新合成硒代二唑部分,探索了用硒对双-2-(5-苯基乙酰胺基-1,2,4-噻二唑)乙基硫化物和CB839类似物中的硫原子进行生物等位置换。羧酸或腈。与相应的含硫分子相比,所得硒代二唑化合物显示出增强的KGA抑制作用,对活性氧的更有效诱导,对癌细胞的抑制作用改善以及更高的细胞和肿瘤积累。然而,CB839及其硒类似物均显示出对测试癌细胞的不完全抑制,并且在谷氨酰胺依赖性HCT116和侵袭性H22肝癌异种移植模型中均观察到肿瘤大小的部分减少。尽管如此,在用CB839的硒类似物治疗的动物中观察到肿瘤组织损伤和延长的生存期。