Post-modified metal-organic framework as a turn-on fluorescent probe for potential diagnosis of neurological diseases

Post-modified metal-organic framework as a turn-on fluorescent probe for potential diagnosis of neurological diseases
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后修饰金属有机框架作为开启荧光探针,用于神经系统疾病的潜在诊断

DOI:
10.1016/j.micromeso.2019.109610
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发表时间:
2019-11
影响因子:
5.2
通讯作者:
Qian Guodong
Qian Guodong
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhu Jiayan;Tang Ying;Yang Yu;Li Bin;Cui Yuanjing;Qian Guodong

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准确测定血清GSH对于预防和诊断精神分裂症、阿尔茨海默病等神经系统疾病具有重要意义,本工作将Eu3+和Cu2+引入到UIO-67-bpydc中,合成了修饰后的Eu3+/Cu2+@uio-67-bpydc。基于硫醇与Cu2+离子之间的相互作用,含有巯基的生物分子如GSH可以与Cu2+络合在Eu3+/Cu2+@UiO-67-bpydc上,增强其荧光强度,因此,修饰后的Eu3+/Cu2+@uio-67-bpydc可以作为检测GSH的平台。它在GSH的检测中表现出灵敏的“开启”反应,超过了其他生物干扰,甚至可以从半胱氨酸中选择GSH。在水溶液中,Eu3+/Cu2+@UIO-67-bPy的LOD值为54.3 nm。生理环境下的进一步荧光试验表明,它也可以应用于血清中神经疾病的诊断。
Precise measurement of GSH in serum is of great significance for the prevention and diagnosis of neurological disorders such as schizophrenia and Alzheimer's. In this work, we incorporated Eu3+and Cu2+into UiO-67-bpydc to synthesize post-modifiedEu3+/Cu2+@UiO-67-bpydc. Based on the interaction between thiol and Cu2+ions, biomolecules containing sulfhydryl groups such as GSH can coordinate with Cu2+chelated onEu3+/Cu2+@UiO-67-bpydcand increase its fluorescence intensity, thus the post-modifiedEu3+/Cu2+@UiO-67-bpydccan serve as a platform for the detection of GSH. It exhibits a sensitive “Turn-on” response in the detection of GSH over other biological interference can even select GSH from Cys. The LOD ofEu3+/Cu2+@UiO-67-bpydcwas 54.3 nM in aqueous solution. Further fluorescence tests in physiological environment demonstrate that it can also be applied in serum for the diagnosis of neurological diseases.
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