Simultaneous visualization of cysteine/homocysteine and glutathione in living cells and Daphnia magna via dual-signaling fluorescent chemosensor

Simultaneous visualization of cysteine/homocysteine and glutathione in living cells and Daphnia magna via dual-signaling fluorescent chemosensor
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通过双信号荧光化学传感器同时可视化活细胞和大型水蚤中的半胱氨酸/同型半胱氨酸和谷胱甘肽

DOI:
10.1016/j.dyepig.2019.04.056
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发表时间:
2019-09
期刊:
影响因子:
4.5
通讯作者:
Peng Xiaojun
Peng Xiaojun
中科院分区:
材料科学2区
文献类型:
--
作者:
Yang Mingwang;Fan Jiangli;Sun Wen;Du Jianjun;Long Saran;Peng Xiaojun

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生物巯基包括半胱氨酸(Cys)、同型半胱氨酸(Hcy)和谷胱甘肽(GSH),它们在生物体内起着维持细胞氧化还原平衡的重要作用,与多种疾病密切相关。开发高效的荧光探针,可以区分检测具有相似反应性的生物硫醇是非常可取的生物过程的研究。传统的单发射荧光探针会受到周围环境和生物系统的干扰,大大降低了检测的准确性。在此,我们已经构建了一个荧光探针(TCF-NBD)通过连接两个荧光团与生物硫醇反应性连接,它有两个分离的发射在547 nm和610 nm通过不同的激发(470 nm和570 nm,分别),同时快速检测半胱氨酸/同型半胱氨酸和GSH具有高选择性和灵敏度。此外,该探针TCF-NBD具有低细胞毒性,并成功地应用于活细胞和水蚤荧光成像中的细胞内生物硫醇的可视化。我们相信TCF-NBD可以成为开展硫醇相关疾病研究的有力工具。
Biological thiols, including cysteine (Cys), homocysteine (Hcy) and glutathione (GSH), play crucial roles in living organisms, such as maintaining the cellular redox equilibrium, and are closely related to many diseases. The development of efficient fluorescent probes that can diacritically detect biothiols with similar reactivity are of great desirable for the study of biological processes. The conventional single-emission fluorescent probes may be disturbed by surrounding environment and biological systems, which is greatly lose the accuracy of its detection. Herein, we have constructed a fluorescent probe (TCF-NBD) by connecting two fluorophores with a biothiol-reactive linker, which has two separated emissions at 547 nm and 610 nm via different excitations (470 nm and 570 nm, respectively), for simultaneously fast detecting Cys/Hcy and GSH with high selectivity and sensitivity. Furthermore, the probeTCF-NBDexhibits low cytotoxicity and was successfully applied to visualize intracellular biothiols in living cells andDaphnia magnaby fluorescence imaging. We believe thatTCF-NBDcan be a powerful tool for conducting the research of thiol-related diseases.
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