A ferroptosis-inducing iridium(III) complex

A ferroptosis-inducing iridium(III) complex
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诱导铁死亡的铱 (III) 复合物

DOI:
10.1007/s11426-019-9577-3
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发表时间:
2020-01
期刊:
Science China. Chemistry
影响因子:
--
通讯作者:
Guo Zijian
Guo Zijian
中科院分区:
其他
文献类型:
--
作者:
Wang Xiuxiu;Chen Feng;Zhang Jingyi;Sun Jianxuan;Zhao Xinyang;Zhu Yuelu;Wei Wei;Zhao Jing;Guo Zijian

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铁下垂是一种新近出现的非凋亡性细胞死亡模式,涉及铁依赖的活性氧物种(ROS)的产生。在这里,我们描述了一种线粒体靶向的IrFN络合物,它通过铁下垂途径对多种癌细胞,特别是A2780人卵巢癌细胞显示出强大的抗增殖活性。无标记定量蛋白质组学的机制研究表明,IrFN激活了Hmox1介导的铁下垂过程。对铁依赖的细胞死亡、ROS积累、脂质过氧化和过量释放铁的研究进一步证实了铁下垂过程。MRNA转录定量、Hmox1体外过表达和RNAi介导的基因敲除实验表明IrFN激活了Hmox1的过表达。我们的报告揭示了第一例抗癌Ir络合物导致铁性下垂的病例,强调了铁性下垂是未来金属药物设计的一种有前途的方法。
Ferroptosis is a recently emerging non-apoptotic mode of cell death involving the production of iron-dependent reactive oxygen species (ROS). Here we described a mitochondria-targeted iridium (III) complex IrFN that exhibited potent antiproliferative activity against a variety of cancer cells, especially the A2780 human ovarian cancer cells, through the ferroptosis pathways. Mechanistic studies by label-free quantitative proteomics profiling indicated that heme oxygenase 1 (HMOX1)-mediated ferroptosis process was activated by IrFN. The study on iron-dependent cell death, ROS accumulation, lipid peroxidation, and over released iron further confirmed the ferroptosis processes. mRNA transcription quantification, in vitro over-expression of HMOX1, and RNAi-mediated knock-down experiments suggested that IrFN activated the over-expression of HMOX1. Our report revealed the first case of anticancer iridium complex leading to ferroptosis, highlighting ferroptosis as a promising approach in future design of metallodrugs.
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