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High-Selectivity Fluorescent Reporter toward Peroxynitrite in a Coexisting Nonalcoholic Fatty Liver and Drug-Induced Liver Diseases Model.
Analytical Chemistry ( IF 6.7 ) Pub Date : 2020-07-20 , DOI: 10.1021/acs.analchem.0c02277
Dan Cheng 1 , Xiangyang Gong 1 , Qian Wu 1 , Jie Yuan 1 , Yun Lv 1 , Lin Yuan 1 , Xiaobing Zhang 1
Affiliation  

Peroxynitrite (ONOO), a highly reactive species, is profoundly involved in many physiological and pathological processes. Change of the ONOO level usually indicates an abnormal body function. Thus, it is desired to develop a highly reliable ONOO assay to elucidate its roles in a related disease environment. In this work, we have constructed a ratiometric molecule fluorescent probe RTFP toward ONOO with high specificity by the combination strategy of probe screening and a rational design method. RTFP displayed excellent detection sensitivity (detection limit: 4.1 nM) and produced a highly ratiometric emission signal (130-fold). Leveraging this probe, we showed the change of ONOO content in the free-fatty-acid-induced nonalcoholic fatty liver disease (NAFLD) and acetaminophen-induced drug-induced liver injury (DILI) cellular model and for the first time disclosed the involved mechanism of cytochrome P450 2E1 (CYP2E1) enzyme in NAFLD with a DILI pathological environment. Furthermore, RTFP also was utilized to visualize ONOO fluctuation of living liver tissues in a high-fat-diet-caused NAFLD model. We expected that this probe may help the study of liver injury in the exploration of mechanism and signal path.

中文翻译:

在非酒精性脂肪肝和药物引起的肝病共存模型中,针对过氧亚硝酸盐的高选择性荧光报道分子。

过氧亚硝酸盐(ONOO )是一种高反应性物种,与许多生理和病理过程密切相关。ONOO 水平的改变通常表示身体功能异常。因此,希望开发一种高度可靠的ONOO -法来阐明相关疾病环境中的角色。在这项工作中,我们已经建立了一个比例分子荧光探针RTFP向ONOO -通过探头筛选的组合策略和合理的设计方法具有较高的特异性。RTFP显示出极好的检测灵敏度(检测极限:4.1 nM),并产生了高比例发射信号(130倍)。利用此探针,我们展示了ONOO的变化游离脂肪酸诱导的非酒精性脂肪性肝病(NAFLD)和对乙酰氨基酚诱导的药物诱导的肝损伤(DILI)细胞模型中的含量,并首次公开了细胞色素P450 2E1(CYP2E1)酶的相关机制具有DILI病理环境的NAFLD。此外,RTFP还用于可视化ONOO 高脂肪饮食引起的NAFLD模型中活的肝组织的波动。我们希望该探针可能有助于肝损伤研究机制和信号通路的探索。
更新日期:2020-08-18
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