高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (6): 20240386.doi: 10.7503/cjcu20240386

• 研究论文 • 上一篇    下一篇

基于细胞衍生荧光碳点的葡萄糖比色及荧光测定

刘瀛琪1, 王叶梅1, 蒋恺1, 郑芬芬1(), 朱俊杰2()   

  1. 1.江苏科技大学环境与化学工程学院, 镇江 212003
    2.南京大学化学化工学院, 生命分析化学国家重点实验室,南京 210023
  • 收稿日期:2024-08-15 出版日期:2025-06-10 发布日期:2024-09-20
  • 通讯作者: 郑芬芬,朱俊杰 E-mail:zhengfenfen@just.edu.cn;jjzhu@nju.edu.cn
  • 基金资助:
    国家自然科学基金(21804059);江苏省研究生科研与实践创新计划项目(KYCX23_3898)

Colorimetric and Fluorescence Determination of Glucose Based on Cell-derived Fluorescent Carbon Dots

LIU Yingqi1, WANG Yemei1, JIANG Kai1, ZHENG Fenfen1(), ZHU Junjie2()   

  1. 1.School of Environmental & Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China
    2.State Key Laboratory of Analytical for Life Science,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China
  • Received:2024-08-15 Online:2025-06-10 Published:2024-09-20
  • Contact: ZHENG Fenfen, ZHU Junjie E-mail:zhengfenfen@just.edu.cn;jjzhu@nju.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21804059);the Postgraduate Research & Practice Innovation Program of Jiangsu Province, China(KYCX23_3898)

摘要:

以肿瘤细胞为原料, 通过一步水热法合成了细胞衍生荧光碳点(CDs). 研究结果表明, 该CDs具有优异的类过氧化物酶催化活性, 能够催化过氧化氢反应生成羟基自由基. 基于此, 利用葡萄糖氧化产生的过氧化氢 及CDs的类过氧化物酶性能氧化对苯二胺(p-Phenylenediamine, PPD)底物生成氧化产物PPDox[2,5-Diamino- N,N′-di-(4-aminophenyl)-2,5-cyclohexadiene-1,4-diimine]. 并通过PPDox对荧光CDs的内滤效应, 实现了葡萄糖的比色与荧光双模式检测. 比色法与荧光法检测葡萄糖的检出限分别为41和13 µmol/L. 反应过程中, CDs具备双重功能, 既可作为类过氧化物酶催化过氧化氢产生羟基自由基用于氧化PPD, 又可作为荧光指示剂, 通过内滤效应指示葡萄糖的浓度变化.

关键词: 细胞衍生荧光碳点, 类过氧化物酶, 葡萄糖探针

Abstract:

Cell derived fluorescent carbon points(CDs) were synthesized via one step hydrothermal method. It is found that the CDs have excellent peroxide-like catalytic activity, which can catalyze the hydrogen peroxide to produce hydroxyl radical. Based on this, the hydrogen peroxide produced by glucose oxidation and CDs could consecutively oxidize p-phenylenediamine(PPD) to produce PPDox[2,5-Diamino-NN′-di-(4-aminophenyl)-2,5-cyclohexadiene-1,4-diimine]. By virtue of the inner filer effect of PPDox on CDs, a dual-mode colorimetric and fluorescent detection of glucose was establised. The limit of detection of the present assay are 41 µmol/L and 13 µmol/L for the colorimetric method and the fluorescence method, respectively. In this work, CDs can not only be used as a peroxide-like enzyme to catalyze hydrogen peroxide to produce hydroxyl radical for PPD oxidation, but also be used as a fluorescent indicator to indicate the change of glucose concentration through the internal filtration effect.

Key words: Cell derived fluorescent carbon dots, Peroxide-like, Glucose probe

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