新型香豆素类氟离子荧光探针的合成及细胞成像研究

doi:10.6023/A17010029

化学学报 ›› 2017, Vol. 75 ›› Issue (4): 383-390.DOI: 10.6023/A17010029 上一篇下一篇

研究论文

新型香豆素类氟离子荧光探针的合成及细胞成像研究

王少静, 李长伟, 李锦, 陈邦, 郭媛

西北大学化学与材料科学学院合成与天然功能分子化学教育部重点实验室西安 710127

投稿日期:2017-01-19 发布日期:2017-03-07
通讯作者: 郭媛,E-mail:guoyuan@nwu.edu.cn E-mail:guoyuan@nwu.edu.cn
基金资助:
项目受国家自然科学基金（Nos.21472148，21072158）、陕西省留学人员科技活动择优资助项目（No.20151190）和西北大学优秀青年学术骨干支持计划资助.

Novel Coumarin-Based Fluorescent Probes for Detecting Fluoride Ions in Living Cells

Wang Shaojing, Li Changwei, Li Jin, Chen Bang, Guo Yuan

Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127

Received:2017-01-19 Published:2017-03-07
Contact: 10.6023/A17010029 E-mail:guoyuan@nwu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 21472148, 21072158), the Preferential Financing of Science and Technology Activities in Returned Overseas Graduates in Shaanxi Province (No. 20151190) and the Academic Back-bone of Northwest University Outstanding Youth Support Program.

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1. 新型香豆素类氟离子荧光探针的合成及细胞成像研究.PDF(1725KB)

摘要/Abstract

设计合成了一类基于分子内电荷转移（Intramolecular Charge Transfer，ICT）的香豆素类F^-荧光探针CS1，CS2和CS3，经¹H NMR，¹³C NMR，IR和HRMS表征了相应探针的结构，并解析了探针CS3的晶体结构.通过核磁和质谱实验验证了探针与F^-的作用机理是氟化物脱硅基.光谱分析实验结果显示，CS1，CS2和CS3均具有较好的选择性和灵敏度，且均能成功实现人乳腺癌细胞（MCF^-7）中F^-的检测.

关键词: 香豆素, 氟离子, 荧光探针, 分子内电荷转移, 细胞成像

Fluoride, the smallest anion, is one of the most important anions in the human body which is involved in many diseases and many life activities can be displayed by its situation. It is necessary to detect fluoride ions and determine its concentration in organism. Compared to the traditional detection methods, fluorescence probes exhibit high sensitivity, high selectivity and potential for real-time detection. Because coumarin derivatives have strong emission in the visible region, high quantum yield, high photostability and excellent bioactivity, we choose them as fluorophore to prepare new fluorescent probes. Based on the mechanism of intramolecular charge transfer (ICT), the fluorescent probes CS1, CS2 and CS3 that are coumarin-based derivatives were designed, synthesized and utilized in fluoride ions detection. Their structures were confirmed by ¹H NMR, ¹³C NMR, IR and HRMS. Meanwhile, the crystals of CS3 were obtained by slow evaporation of an ether solution at room temperature over a period of a few days. The detection limits of CS1, CS2 and CS3 for fluoride ions were respectively determined as 21.77, 3.52 and 1.99 μmol/L, indicating that probes have a good sensitivity to the detection of fluoride. The selectivity experiment results demonstrated that the three probes were highly selective for fluoride ions over other competitive. The recognition mechanism of the fluorescent response to fluoride ions was verified by HRMS and NMR experiment in this work. A lot of detailed experiment results indicated that the fluorescent response of probes to fluoride ions attributed to the specific fluoride promoted Si-O cleavage. The study of the effect of probes on viability of cells were carried out using the methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay. The experimental results indicated that the three probes had low cytotoxicity. Then the three probes were successfully used to fluorescent detect and image fluoride ions in MCF-7 cells by fluorescence spectrum and confocal fluorescence microscopic imaging, respectively.

Key words: coumarin, fluoride ions, fluorescent probe, intramolecular charge transfer, cell imaging

引用此文

王少静, 李长伟, 李锦, 陈邦, 郭媛. 新型香豆素类氟离子荧光探针的合成及细胞成像研究[J]. 化学学报, 2017, 75(4): 383-390.

Wang Shaojing, Li Changwei, Li Jin, Chen Bang, Guo Yuan. Novel Coumarin-Based Fluorescent Probes for Detecting Fluoride Ions in Living Cells[J]. Acta Chim. Sinica, 2017, 75(4): 383-390.

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新型香豆素类氟离子荧光探针的合成及细胞成像研究

Novel Coumarin-Based Fluorescent Probes for Detecting Fluoride Ions in Living Cells

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