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Zou Y, Wang W, Duan F, Yun W, Chen H, Li Y, Yang L. Highly sensitive fluorescence detection of chloramphenicol based on product catalysis of tetrahedral DNA framework and fluorescent quenching of MIL-101(Fe). Food Chem 2024; 463:141144. [PMID: 39255702 DOI: 10.1016/j.foodchem.2024.141144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 08/31/2024] [Accepted: 09/03/2024] [Indexed: 09/12/2024]
Abstract
An ultrasensitive fluorescence detection strategy of chloramphenicol (CAP) was developed based on product catalysis of tetrahedral DNA framework (TDF) and fluorescent quenching of MIL-101(Fe). The product was used to catalyze the reaction. As the concentration of catalyst increased, the reaction time was significantly shorted to 21 min which was much shorter than other isothermal amplification technologies. Moreover, the multiple fluorophores of TDF and high efficient quenching ability of MIL-101(Fe) provided better performance with a linear range for CAP detecting from 1.6 pM to 80 pM and the limit of detection (LOD) as low as 0.67 pM. In addition, it also demonstrated good specificity and resistance to interference from other related antibiotics. Importantly, this strategy exhibited satisfactory relative standard deviation and recovery results for practical application, exhibiting a favorable application prospect in CAP analysis.
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Affiliation(s)
- Yu Zou
- State Key Laboratory of Macromolecular Drugs and Large-scale Manufacturing, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wanshan Wang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Fengyin Duan
- State Key Laboratory of Macromolecular Drugs and Large-scale Manufacturing, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wen Yun
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Hong Chen
- Shanghai Institute of Doping Analyses, Shanghai University of Sport, Shanghai 200438, China.
| | - Yiping Li
- The Third Hospital of Mianyang/Sichuan Mental Health Center, Mianyang, Sichuan 621000, China.
| | - Lizhu Yang
- State Key Laboratory of Macromolecular Drugs and Large-scale Manufacturing, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
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Lu Z, Jiang Y, Wang P, Xiong W, Qi B, Zhang Y, Xiang D, Zhai K. Bimetallic organic framework-based aptamer sensors: a new platform for fluorescence detection of chloramphenicol. Anal Bioanal Chem 2020; 412:5273-5281. [PMID: 32514850 DOI: 10.1007/s00216-020-02737-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/05/2020] [Accepted: 05/25/2020] [Indexed: 12/25/2022]
Abstract
A fluorescence method for the quantitative detection of chloramphenicol (CAP) has been developed using phosphate and fluorescent dye 6-carboxy-x-rhodamine (ROX) double-labeled aptamers of CAP and the bimetallic organic framework nanomaterial Cu/UiO-66. Cu/UiO-66 was prepared by coordinate bonding of metal organic framework (MOF) nanomaterial UiO-66 with copper ions. Cu/UiO-66 contains a large number of metal defect sites, which can be combined with phosphate-modified nucleic acid aptamers through strong coordination between phosphate and zirconium to form "fluorescence turn-on" sensors. In the absence of CAP, all single-stranded aptamers were adsorbed on the surface of Cu/UiO-66 through π-π stacking between single-stranded DNA and Cu/UiO-66, which brings the ROX fluorophores and Cu/UiO-66 into close proximity. The ROX fluorescence of aptamers was then quenched by Cu/UiO-66 through photoinduced electron transfer (PET). In the presence of CAP, however, CAP reacted with nucleic acid aptamers to form a special spatial structure, in which the ROX fluorophores were far away from the MOF surface via a change in the spatial structure of the aptamers, and the fluorescence of ROX was able to be recovered. The quantitative detection of CAP can be achieved by measuring the fluorescence signal of ROX using synchronous scanning fluorescence spectrometry. Under optimum conditions, the fluorescence intensities of ROX exhibit a good linear dependence on the concentration of CAP in the range of 0.2-10 nmol/L, with a detection limit of 0.09 nmol/L. The method has advantages of high sensitivity, good selectivity, and a low limit of detection. Graphical abstract.
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Affiliation(s)
- Zijing Lu
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China.,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China
| | - Yansong Jiang
- College of Chemistry, Jilin University, Changchun, 130012, Jilin, China
| | - Peng Wang
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China.,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China
| | - Weiwei Xiong
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China.,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China
| | - Baoping Qi
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China
| | | | - Dongshan Xiang
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China. .,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China.
| | - Kun Zhai
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, 445000, Hubei, China. .,Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, 445000, Hubei, China.
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