应用化学 ›› 2024, Vol. 41 ›› Issue (5): 728-738.DOI: 10.19894/j.issn.1000-0518.240028

• 研究论文 • 上一篇    下一篇

金属有机框架Cu@Sc-MOF纳米酶对5΄-三磷酸腺苷的比色/荧光检测

柴小静1, 赵瑞瑞1, 张羱2, 董川2(), 双少敏1()   

  1. 1.山西大学化学化工学院,太原 030006
    2.山西大学环境科学研究所,太原 030006
  • 收稿日期:2024-01-28 接受日期:2024-04-14 出版日期:2024-05-01 发布日期:2024-06-03
  • 通讯作者: 董川,双少敏
  • 基金资助:
    国家自然科学基金(22274090)

Colorimetric/Fluorometric Detection of Adenosine-5-Triphosphate Based on Metal-Organic Framework Cu@Sc-MOF Nanozyme

Xiao-Jing CHAI1, Rui-Rui ZHAO1, Yuan ZHANG2, Chuan DONG2(), Shao-Min SHUANG1()   

  1. 1.School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China
    2.Institute of Environmental Science,Shanxi University,Taiyuan 030006,China
  • Received:2024-01-28 Accepted:2024-04-14 Published:2024-05-01 Online:2024-06-03
  • Contact: Chuan DONG,Shao-Min SHUANG
  • About author:smshuang@sxu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22274090)

摘要:

通过溶剂热法制备了一种铜/钪金属有机框架(Cu@Sc-MOF)纳米酶,在H2O2存在下,Cu@Sc-MOF可催化氧化3,3?,5,5'-四甲基联苯胺(TMB)得到蓝色氧化产物oxTMB,并在652 nm处产生特征吸收峰。 同样,Cu@Sc-MOF也可氧化邻苯二胺(OPD)生成2-氨基吩嗪(DAP),并在570 nm产生特征荧光发射峰(激发波长为390 nm)。 由于5?-三磷酸腺苷(ATP)与Cu2+络合,抑制了Cu@Sc-MOF的催化活性,使得652 nm处的吸光度和570 nm处的荧光强度减弱,基于Cu@Sc-MOF的类过氧化物酶活性,构建了一种用于检测ATP的比色/荧光双模式光谱法。 比色和荧光分析法的线性范围分别为2.50~40.00 μmol/L和1.00~22.50 μmol/L,检出限(LOD)分别为0.60和0.27 μmol/L。 将上述比色/荧光双模式分析法用于肝癌细胞HepG2细胞裂解液中ATP的检测,加标回收率分别为92.0%~101%和93.2%~97.9%,具有良好的应用前景。

关键词: Cu@Sc-MOF, 纳米酶, 类过氧化物酶活性, 比色/荧光, 5?-三磷酸腺苷

Abstract:

A copper/scandium metal-organic framework (Cu@Sc-MOF) nanozyme was prepared by solvothermal method. The Cu@Sc-MOF nanozyme could oxidize substrate 3,3′,5,5′-tetramethylbenzidine (TMB) to produce blue oxTMB which showed absorption at 652 nm in the presence of H2O2. Similarly, Cu@Sc-MOF was used to catalyze o-phenylenediamine (OPD) to generate diminophenazine (DAP) with fluorescence emission at 570 nm. The colorimetric/fluorometric dual-mode sensor for the detection of adenosine-5′-triphosphate (ATP) was developed owing to the peroxidase-like characteristics of the Cu@Sc-MOF. Upon the addition of ATP in the Cu@Sc-MOF/H2O2 mixture, the peroxidase-like activity of Cu@Sc-MOF was inhibited due to the strong interaction between ATP and Cu2+ ion, causing weakened absorbance at 652 nm and less fluorescence intensity at 570 nm. The respective values of linear ranges for the colorimetric and fluorometric method were 2.50~40.0 μmol/L and 1.00~22.5 μmol/L, and the limits of detection (LOD) were 0.600 and 1.87μmol/L. The colorimetric/fluorescence dual-mode analysis method could realize to detect ATP in HepG2 cell lysate with recoveries ranged from 92.0%~101% and 93.2%~97.9%, respectively, showing good application prospects in the detection of ATP.

Key words: Cu@Sc-MOF, Nanozyme, Peroxidase-like activity, Colorimetric/Fluorometric, Adenosine-5??- triphosphate

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