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Hu J, Su X, Yuan L, Zheng K, Zou X, Sun Z, Xu X, Zhang W. Competitive immunoassay using enzyme-regulated Fe 3O 4@COF/Fe 3+ fluorescence probe for natural chloramphenicol detection. Anal Chim Acta 2023; 1277:341680. [PMID: 37604605 DOI: 10.1016/j.aca.2023.341680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/23/2023] [Accepted: 07/30/2023] [Indexed: 08/23/2023]
Abstract
Accurate and sensitive detection of chloramphenicol (CAP) in natural samples is essential for ensuring human health. Herein, an enzyme-regulated fluorescence sensor using Fe3O4@COF/Fe3+ probe, is developed for CAP determination. Fe3O4@COF, synthesized via hydrothermal method, exhibits dual functions as a magnetic carrier and signal probe. Bovine serum albumin conjugated-chloramphenicol, adsorbed on the surface of Fe3O4@COF, competes with CAP for antibody binding. The antibody interacts with alkaline phosphatase via the biotin-streptavidin system. Meanwhile, ascorbic acid, produced from the enzyme-catalyzed reaction dominated by alkaline phosphatase, effectively restores the fluorescence of Fe3O4@COF that is quenched by Fe3+. After experimental verification and gradual optimization, a logarithmic linear relationship between CAP concentration and fluorescence intensity is established in the range of 2 × 10-4∼10 μg mL-1, with a good limit of detection (9.2 × 10-5 μg mL-1). Proposed method exhibits excellent stability (15 days) and reusability (8 cycles), providing a sensitive and reliable method for accurate CAP detection. The readouts show good agreement with HPLC and recoveries during laboratory and natural CAP analysis.
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Affiliation(s)
- Jutao Hu
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xiaoyu Su
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Lei Yuan
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Kaiyi Zheng
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xiaobo Zou
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Zongbao Sun
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xuechao Xu
- College of Food Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Wen Zhang
- College of Photoelectric Engineering, Chongqing University, Chongqing, 400044, China.
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Geng F, Liu X, Wei T, Wang Z, Liu J, Shao C, Liu G, Xu M, Feng L. An alkaline phosphatase-induced immunosensor for SARS-CoV-2 N protein and cardiac troponin I based on the in situ fluorogenic self-assembly between N-heterocyclic boronic acids and alizarin red S. SENSORS AND ACTUATORS. B, CHEMICAL 2023; 378:133121. [PMID: 36514318 PMCID: PMC9731814 DOI: 10.1016/j.snb.2022.133121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/25/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Alkaline phosphatase (ALP)-induced in situ fluorescent immunosensor is less investigated and reported. Herein, a high-performance ALP-labeled in situ fluorescent immunoassay platform was constructed. The developed platform was based on a fluorogenic self-assembly reaction between pyridineboronic acid (PyB(OH)2) and alizarin red S (ARS). We first used density functional theory (DFT) to theoretically calculate the changes of Gibbs free energy of the used chemicals before and after the combination and simulated the electrostatic potential on its' surfaces. The free ARS and PyB(OH)2 exist alone, neither emits no fluorescence. However, the ARS/PyB(OH)2 complex emits strong fluorescence, which could be effectively quenched by PPi based on the stronger affinity between PPi and PyB(OH)2 than that of ARS and PyB(OH)2. PyB(OH)2 coordinated with ARS again in the presence of ALP due to the ALP-catalyzed hydrolysis of PPi, and correspondingly, the fluorescence was restored. We chose cTnI and SARS-CoV-2 N protein as the model antigen to construct ALP-induced immunosensor, which exhibited a wide dynamic range of 0-175 ng/mL for cTnI and SARS-CoV-2 N protein with a low limit of detection (LOD) of 0.03 ng/mL and 0.17 ng/mL, respectively. Moreover, the proposed immunosensor was used to evaluate cTnI and SARS-CoV-2 N protein level in serum with satisfactory results. Consequently, the method laid the foundation for developing novel fluorescence-based ALP-labeled ELISA technologies in the early diagnosis of diseases.
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Affiliation(s)
- Fenghua Geng
- Key Laboratory of Coal Processing & Efficient Utilization of Ministry of Education, National Engineering Research Center of Coal Preparation & Purification; School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou 221116, China
- Henan Key Laboratory of Biomolecular Recognition & Sensing, College of Chemistry & Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing & Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, China
| | - Xiaoxue Liu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Tingwen Wei
- College of Chemistry & Material Science, Huaibei Normal University, Huaibei, 235000, China
| | - Zaixue Wang
- Key Laboratory of Coal Processing & Efficient Utilization of Ministry of Education, National Engineering Research Center of Coal Preparation & Purification; School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Jinhua Liu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Congying Shao
- College of Chemistry & Material Science, Huaibei Normal University, Huaibei, 235000, China
| | - Gen Liu
- College of Chemistry & Material Science, Huaibei Normal University, Huaibei, 235000, China
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition & Sensing, College of Chemistry & Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing & Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, China
| | - Li Feng
- Key Laboratory of Coal Processing & Efficient Utilization of Ministry of Education, National Engineering Research Center of Coal Preparation & Purification; School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou 221116, China
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Specific unlocking of the butterfly effect: nanointerface-based electrochemical biosensing of adenosine triphosphate and alkaline phosphatase. J APPL ELECTROCHEM 2022. [DOI: 10.1007/s10800-022-01789-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Qin L, Ren X, Hu K, Wu D, Guo Z, Wang S, Jiang L, Hu Y. Supramolecular host-guest interaction-driven electrochemical recognition for pyrophosphate and alkaline phosphatase analysis. Chembiochem 2022; 23:e202200413. [PMID: 35997506 DOI: 10.1002/cbic.202200413] [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: 07/20/2022] [Revised: 08/20/2022] [Indexed: 11/10/2022]
Abstract
Herein, we report an electrochemical biosensor based on the supramolecular host-guest recognition between cucurbit[7]uril (CB[7]) and L -Phenylalanine-Cu(II) Complex for pyrophosphate (PPi) and alkaline phosphatase (ALP) analysis. First, L -Phe-Cu(II) Complex is simply synthesized by the complexation of Cu(II) (metal node) with L -Phe (bioorganic ligand), which can be immobilized onto CB[7] modified electrode via host-guest interaction of CB[7] and L -Phe. In this process, the signal of the Complex triggered electro-catalytic reduction of H 2 O 2 can be captured. Next, in the view of strong chelation between PPi and Cu(II), a biosensing system of the model "PPi and Cu(II) premixing, then adding L -Phe" is designed and the platform can be applied for PPi analysis well by hampering the formation of L -Phe-Cu(II) Complex. Along with ALP introduction, PPi can be hydrolyzed into orthophosphate (Pi), where abundant Cu(II) ions are released to form L -Phe-Cu(II) Complex, which gives rise to the catalytic reaction of Complex to H 2 O 2 reduction. The quantitative analysis of H 2 O 2 , PPi and ALP activity is achieved successfully and the detection of limits are 0.067 μM, 0.42 μM and 0.09 mU/mL ( S / N =3), respectively. With the merits of high sensitivity and selectivity, cost-effectiveness, and simplification, our developed analytical system has great potential to act on diagnosis and treatment of ALP-related diseases.
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Affiliation(s)
| | | | | | - Di Wu
- Ningbo College of Health Sciences, Chemistry, CHINA
| | | | - Sui Wang
- Ningbo University, Chemistry, CHINA
| | | | - Yufang Hu
- Ningbo University, Chemistry, 818 Fenghua Road,Jiangbei,Ningbo,Zhejiang, 315211, Ningbo, CHINA
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Yuan L, Gan Z, Fan Y, Ding F, Xu X, Chen X, Zou X, Zhang W. Thermal-controlled active sensor module using enzyme-regulated UiO-66-NH 2/MnO 2 fluorescence probe for total organophosphorus pesticide determination. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129111. [PMID: 35643005 DOI: 10.1016/j.jhazmat.2022.129111] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/21/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
An enzyme-regulated UiO-66-NH2/MnO2 fluorescence sensor, fully functionalized with spectrometric capacities, is developed for budget-friendly total organophosphorus pesticides (OPs) determination. The fluorescence probe, UiO-66-NH2/MnO2, is hydrothermally synthesized and morphologically examined. A specialized enzyme-catalyzed reaction, which can be gradually inhibited by OPs, is designed with participations of alkaline phosphatase (ALP) and sodium L-ascorbyl-2-phosphate (AAP). The reaction product of ascorbic acid (AA) decomposes MnO2 and restores UiO-66-NH2 fluorescence, establishing a relationship between OPs level and fluorescence intensity. Interactions among UiO-66-NH2, MnO2, OPs, and AA are clarified. Stepwise optimizations are performed to the UiO-66-NH2/MnO2 probe, ensuring considerable advantages as OPs affinity and fluorescence quenching behavior over rival nanomaterials. Analytical advances are magnified by fabricating an active sensor module, with self-acting thermal regulation for optimal enzyme activity. Under 4 and 20 °C environment, regulation period is less than 40 and 100 s. In total OPs determination for laboratorial and real-vegetable samples, this method exhibits uniform and log-linear responses to common species of OPs in a range as 1.0 × 10-7~10 mg L-1, and limit of detection is established as 8.9 × 10-8 mg L-1. Proposed readouts are validated with certified HPLC and recovery test. Relative errors and recovery rates are found as 2.7-6.4% and 95.8-102.6%, respectively.
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Affiliation(s)
- Lei Yuan
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ziyu Gan
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yushan Fan
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fuyuan Ding
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xuechao Xu
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Xiaojing Chen
- College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xiaobo Zou
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Wen Zhang
- Department of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
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Ma F, Zhou Q, Yang M, Zhang J, Chen X. Microwave-Assisted Synthesis of Sulfur Quantum Dots for Detection of Alkaline Phosphatase Activity. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2787. [PMID: 36014652 PMCID: PMC9414924 DOI: 10.3390/nano12162787] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/29/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Sulfur quantum dots (SQDs) are a kind of pure elemental quantum dots, which are considered as potential green nanomaterials because they do not contain heavy metal elements and are friendly to biology and environment. In this paper, SQDs with size around 2 nm were synthesized by a microwave-assisted method using sulfur powder as precursor. The SQDs had the highest emission under the excitation of 380 nm and emit blue fluorescence at 470 nm. In addition, the SQDs had good water solubility and stability. Based on the synthesized SQDs, a fluorescence assay for detection of alkaline phosphatase (ALP) was reported. The fluorescence of the SQDs was initially quenched by Cr (VI). In the presence of ALP, ALP-catalyzed hydrolysis of 2-phospho-L-ascorbic acid to generate ascorbic acid. The generated ascorbic acid can reduce Cr (VI) to Cr (III), thus the fluorescence intensity of SQDs was restored. The assay has good sensitivity and selectivity and was applied to the detection of ALP in serum samples. The interesting properties of SQDs can find a wide range of applications in different sensing and imaging areas.
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Affiliation(s)
- Fanghui Ma
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Qing Zhou
- State Key Lab of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Minghui Yang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Jianglin Zhang
- Department of Dermatology, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, China
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