细胞凋亡
细胞毒性
化学
细胞内
细胞周期
细胞培养
线粒体
体外
立体化学
活性氧
生物化学
生物
遗传学
作者
Kun Yang,Huanqing Li,Mei‐Qi Hu,Meng‐Xue Ma,Yun‐Qiong Gu,Qi‐Yuan Yang,M. Iqbal Choudhary,Hong Liang,Zhen‐Feng Chen
摘要
Abstract Four lanthanide complexes with 8‐hydroxyquinoline‐2‐aldehyde‐2‐hydrazinopyridine (H‐L 1 ), 8‐hydroxyquinoline‐2‐aldehyde‐2‐hydrazimidazole (H‐L 2 ): [Sm(L 1 ) 2 ][Sm(L 1 )(NO 3 ) 3 ] · CHCl 3 · 2CH 3 OH ( 1 ), [Gd(L 1 ) 2 ][Gd(L 1 )(NO 3 ) 3 ] · CHCl 3 · 2CH 3 OH ( 2 ), [Sm(L 2 )(NO 3 ) 2 ] 2 · CH 3 OH ( 3 ), and [Eu(L 2 )(NO 3 ) 2 ] 2 · CH 3 OH ( 4 ) were synthesized and characterized. In vitro cytotoxicity evaluation showed that the ligands and four lanthanide complexes exhibited cytotoxicity to the five tested tumor cell lines. Among them, complex 1 showed the best antiproliferative activity against NCI‐H460 tumor cells. Mechanistic studies demonstrated that complex 1 arrested the cell cycle of NCI‐H460 cells in G1 phase and induced mitochondria‐mediated apoptosis, which resulted in the loss of mitochondrial membrane potential, enhanced intracellular Ca 2+ levels and reactive oxygen species generation. In addition, complex 1 affected the expression levels of intracellular apoptosis‐related proteins and activated the caspase‐3/9 in NCI‐H460 cells. Therefore, complex 1 is a potential anticancer agent.
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