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He C, Liu H, Yin M, Chen J, Huang W, Zhou H, Wu S, Wang Y. A UOx@HMnO 2 biozyme-nanozyme driven electrochemical platform for specific uric acid bioassays. Analyst 2025; 150:1377-1385. [PMID: 40035522 DOI: 10.1039/d4an01512f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2025]
Abstract
Uric acid (UA) is a key end product of purine metabolism in the human body, and its abnormal levels are associated with many diseases, so accurate monitoring is essential. Existing detection methods have many limitations. For example, chromatography is cumbersome, time-consuming, and not cost-effective, while serum uric acid analysis requires specialized equipment and venous blood collection. In the field of uric acid sensors, electrochemical detection is commonly used but prone to interference, and nanomaterials offer improvements but are complicated to modify. To better block interference via an easily-made nanocomposite-based system, in this study, MnO2 with peroxidase-mimicking activity was used as a protective shell to encapsulate natural uric acid oxidase (UOx), realizing a good combination of nanozymes and biocatalysts. UOx can selectively catalyze UA and generate H2O2, and the MnO2 nanozymes can make up for the insufficiency of UOx, and the two main components synergistically enhance the activity of UOx@HMnO2, resulting in ultra-high performance. This provides a simple and general method for the preparation of efficient hybridized biocatalysts in the fields of biosensors and biocatalysis. The detection limit of the fabricated uric acid sensor is as low as 0.74 μM, and the concentration of the actual sample is consistent with that of mass spectrometry, which provides a means of non-invasive detection of uric acid with high sensitivity, high specificity and good accuracy.
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Affiliation(s)
- Chenlong He
- State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
| | - Huawei Liu
- State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
| | - Ming Yin
- State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
| | - Jing Chen
- State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
| | - Wensi Huang
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China
| | - Han Zhou
- State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
| | - Shengming Wu
- State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
| | - Yilong Wang
- State Key Laboratory of Cardiology and Medical Innovation Center, Shanghai East Hospital, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
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Liu W, Nie Y, Zhang M, Yan K, Wang M, Guo Y, Ma Q. A novel nanosponge-hydrogel system-based ECL biosensor for uric acid detection. LUMINESCENCE 2022; 37:1524-1531. [PMID: 35815832 DOI: 10.1002/bio.4326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/24/2022] [Accepted: 07/05/2022] [Indexed: 11/10/2022]
Abstract
In this work, a highly efficient electrochemiluminescence (ECL) biosensor has been developed based on the nanosponge-hydrogel system for uric acid (UA) detection. Firstly, the nanosponge consists of PLGA nanoparticles immobilized with MoS2 QDs and urate oxidase (UAO). The remarkable loading capability of PLGA nanoparticles can load much biomolecules and QDs for the specific recognition of uric acid. Urate oxidase on the nanosponge can catalyze uric acid to generate H2 O2 in situ, which further trigger the ECL signal of MoS2 QDs. Furthermore, the biocompatible acrylamide-based hydrogel not only effectively retains the functionalities of the chimeric nanosponge-hydrogel, but also provides the structural integrity and engineering flexibility on the electrode in the ECL sensing application. Meanwhile, there are plenty of ester groups and amide bonds in the nanosponge-hydrogel structure. So, much electron can be excited due to a large number of lone electron pairs on oxygen and nitrogen atom in the ECL process. It results in 7-fold ECL enhancement of MoS2 QDs. Finally, the nanosponge-hydrogel structure-based ECL biosensor has been successfully used in actual clinical serum assays. It shows a good analytical performance for the uric acid detection (100 ~ 500 μmol/L) with a detection limit of 20 μmol/L.
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Affiliation(s)
- Wanqing Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, China.,National Chemistry Experimental Teaching Demonstration Center, Jilin University, Changchun, Jilin, China
| | - Yixin Nie
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, China
| | - Mengmeng Zhang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, China.,National Chemistry Experimental Teaching Demonstration Center, Jilin University, Changchun, Jilin, China
| | - Kefan Yan
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, China.,National Chemistry Experimental Teaching Demonstration Center, Jilin University, Changchun, Jilin, China
| | - Mai Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, China.,National Chemistry Experimental Teaching Demonstration Center, Jilin University, Changchun, Jilin, China
| | - Yupeng Guo
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, China.,National Chemistry Experimental Teaching Demonstration Center, Jilin University, Changchun, Jilin, China
| | - Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, China.,National Chemistry Experimental Teaching Demonstration Center, Jilin University, Changchun, Jilin, China
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