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Visualization of oxidative injury in the mouse kidney using selective superoxide anion fluorescent probes†
Chemical Science ( IF 7.6 ) Pub Date : 2018-09-13 00:00:00 , DOI: 10.1039/c8sc03308k
Yun Lv 1 , Dan Cheng 1 , Dongdong Su 2 , Mei Chen 3 , Bin-Cheng Yin 4 , Lin Yuan 1 , Xiao-Bing Zhang 1
Affiliation  

Drug-induced acute kidney injury (AKI), caused by renal drug metabolism, has been regarded as a main problem in clinical pharmacology and practice. However, due to the lack of effective biomarkers and noninvasive real-time tools, the early diagnosis of drug-induced AKI is still a crucial challenge. The superoxide anion (O2˙), the preliminary reactive oxidative species, is closely related to drug-induced AKI. In this paper, we reported two new mitochondria-targeted fluorescent probes for investigating AKI via mapping the fluctuation of O2˙ with high sensitivity and selectivity by the combination of rational design and a probe-screening approach. Small-molecule fluorescent probes (Naph-O2˙ and NIR-O2˙) with high accuracy and excellent selectivity were successfully applied to detect endogenously produced O2˙ in living cells and tissues by dual-model confocal imaging, and to trap the fluctuation of the O2˙ level during the drug-induced nephrotoxicity. Moreover, probe NIR-O2˙ was also used to elucidate the protective effects of L-carnitine (LC) against drug-induced nephrotoxicity for the first time. Therefore, these probes may be potential chemical tools for exploring the roles of O2˙ in complex nephrotoxicity disease systems.

中文翻译:


使用选择性超氧阴离子荧光探针观察小鼠肾脏氧化损伤†



药物性急性肾损伤(AKI)是由肾脏药物代谢引起的,一直被认为是临床药理学和实践中的主要问题。然而,由于缺乏有效的生物标志物和无创实时工具,药物诱发的 AKI 的早期诊断仍然是一个至关重要的挑战。超氧阴离子(O 2 ˙ )是初步的活性氧化物质,与药物诱发的 AKI 密切相关。在本文中,我们报道了两种新的线粒体靶向荧光探针,通过合理设计和探针筛选方法相结合,以高灵敏度和选择性绘制 O 2 ˙ -波动图谱,用于研究 AKI。具有高精度和优异选择性的小分子荧光探针( Naph-O 2 ˙ NIR-O 2 ˙ )成功应用于通过双模型共聚焦成像检测活细胞和组织中内源产生的 O 2 ˙ ,捕获药物引起的肾毒性期间O 2 ˙ -水平的波动。此外,探针NIR-O 2 ˙ -还首次被用来阐明左旋肉碱(LC)对药物性肾毒性的保护作用。 因此,这些探针可能是探索 O 2 ˙ -在复杂肾毒性疾病系统中的作用的潜在化学工具。
更新日期:2018-09-13
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