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Yu X, Wang Y, Zhang J, Liu J, Wang A, Ding L. Recent Development of Copper-Based Nanozymes for Biomedical Applications. Adv Healthc Mater 2024; 13:e2302023. [PMID: 37742127 DOI: 10.1002/adhm.202302023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 09/06/2023] [Indexed: 09/25/2023]
Abstract
Copper (Cu), an indispensable trace element within the human body, serving as an intrinsic constituent of numerous natural enzymes, carrying out vital biological functions. Furthermore, nanomaterials exhibiting enzyme-mimicking properties, commonly known as nanozymes, possess distinct advantages over their natural enzyme counterparts, including cost-effectiveness, enhanced stability, and adjustable performance. These advantageous attributes have captivated the attention of researchers, inspiring them to devise various Cu-based nanomaterials, such as copper oxide, Cu metal-organic framework, and CuS, and explore their potential in enzymatic catalysis. This comprehensive review encapsulates the most recent advancements in Cu-based nanozymes, illuminating their applications in the realm of biochemistry. Initially, it is delved into the emulation of typical enzyme types achieved by Cu-based nanomaterials. Subsequently, the latest breakthroughs concerning Cu-based nanozymes in biochemical sensing, bacterial inhibition, cancer therapy, and neurodegenerative diseases treatment is discussed. Within this segment, it is also explored the modulation of Cu-based nanozyme activity. Finally, a visionary outlook for the future development of Cu-based nanozymes is presented.
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Affiliation(s)
- Xin Yu
- Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, P. R. China
| | - Yawen Wang
- Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, P. R. China
| | - Jian Zhang
- Division of Systems and Synthetic Biology, Department of Life Sciences, Chalmers University of Technology, Gothenburg, 412 96, Sweden
| | - Jing Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, University of Chinese Academy of Science, Beijing, 100190, P. R. China
| | - Aizhu Wang
- Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, P. R. China
| | - Longhua Ding
- Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, P. R. China
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2
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Ayaz S, Üzer A, Dilgin Y, Apak MR. Fabrication of a Novel Optical Glucose Biosensor Using Copper(II) Neocuproine as a Chromogenic Oxidant and Glucose Dehydrogenase-Immobilized Magnetite Nanoparticles. ACS OMEGA 2023; 8:47163-47172. [PMID: 38107897 PMCID: PMC10719923 DOI: 10.1021/acsomega.3c07181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/11/2023] [Accepted: 11/20/2023] [Indexed: 12/19/2023]
Abstract
This study describes a novel optical glucose biosensor based on a colorimetric reaction between reduced nicotinamide adenine dinucleotide (NADH) and a copper(II) neocuproine complex ([Cu(Nc)2]2+) as a chromogenic oxidant. An enzymatic reaction takes place between glucose and glucose dehydrogenase (GDH)-chitosan (CS) immobilized on silanized magnetite nanoparticles (CS@SiO2@Fe3O4) in the presence of coenzyme NAD+. The oxidation of glucose to gluconolactone via the immobilized enzyme is coupled with the reduction of NAD+ to NADH at the same time. After the separation of GDH-immobilized SiO2@Fe3O4 with a magnet, the enzymatically produced NADH chemically reduces the chromogenic oxidant cupric neocuproine to the cuprous chelate. Thus, the glucose biosensor is fabricated based on the measurement of the absorbance of the formed yellow-orange complex ([Cu(Nc)2]+) at 450 nm. The obtained results show that the colorimetric biosensor has a wide linear response range for glucose, between 1.0 and 150.0 μM under optimized conditions. The limit of detection and limit of quantification were found to be 0.31 and 1.02 μM, respectively. The selectivity properties of the fabricated biosensor were tested with various interfering species. This biosensor was applied to various samples, and the obtained results suggest that the fabricated optical biosensor can be successfully used for the selective and sensitive determination of glucose in real samples.
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Affiliation(s)
- Selen Ayaz
- Faculty
of Science, Department of Chemistry, Canakkale
Onsekiz Mart University, Canakkale 17100, Turkey
| | - Ayşem Üzer
- Faculty
of Engineering, Department of Chemistry, İstanbul University-Cerrahpaşa, İstanbul-Avcılar 34320, Turkey
| | - Yusuf Dilgin
- Faculty
of Science, Department of Chemistry, Canakkale
Onsekiz Mart University, Canakkale 17100, Turkey
| | - M. Reşat Apak
- Faculty
of Engineering, Department of Chemistry, İstanbul University-Cerrahpaşa, İstanbul-Avcılar 34320, Turkey
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3
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Dong T, Zhang X, Yuan J, Lin Z, Yin P, Yu H, Wang M, Liu A. Sensitive Lateral Flow Immunoassay Based on Specific Peptide and Superior Oxidase Mimics with a Universal Dual-Mode Significant Signal Amplification. Anal Chem 2023; 95:12532-12540. [PMID: 37553756 DOI: 10.1021/acs.analchem.3c02821] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Rapid and sensitive antigen detection using a lateral flow immunoassay (LFIA) is crucial for diagnosing infectious diseases due to its simplicity, speed, and user-friendly features. However, it remains a critical issue to explore specific biorecognition elements and powerful signal amplification. In this study, taking SARS-CoV-2 as a proof of concept, a specific peptide, WFLNDSELIML, binding to the SARS-CoV-2 spike (S) antigen was identified by a nonamplified biopanning method, which exhibited high affinity to the target, with a dissociation constant of 9.29 ± 1.55 nM. Molecular docking analysis reveals that this peptide binds to the N-terminal domain of the SARS-CoV-2 S antigen. Then, using this peptide as a capture probe and angiotensin-converting enzyme 2 as a detection probe, a peptide-based lateral flow immunoassay (pLFIA) for the sensitive detection of the SARS-CoV-2 S antigen without any antibody was developed, for which a polydopamine nanosphere (PDA)@MnO2 nanocomposite with excellent oxidase-like activity was used as a colorimetric label, exhibiting dual-mode remarkable signal amplification of natural melanin and on-demand nanozyme catalytic enhancement. The PDA@MnO2-based pLFIA is capable of detecting the SARS-CoV-2 S antigen with a limit of detection of 8.01 pg/mL, which is 18.7 times lower than that of a conventional pLFIA tagged with gold nanoparticles. Additionally, the as-proposed PDA@MnO2-based pLFIA can detect up to 150 transduction units/mL SARS-CoV-2 pseudoviruses spiked in saliva samples. Given the outstanding analytical performance, the proposed PDA@MnO2-based pLFIA may offer a reliable option for the rapid diagnosis of SARS-CoV-2.
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Affiliation(s)
- Tao Dong
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
- School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Xin Zhang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Jinlong Yuan
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Ziting Lin
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
- Qingdao Hightop Biotech Co., Ltd., 369 Hedong Road, Hi-tech Industrial Development Zone, Qingdao 266112, China
| | - Pengxue Yin
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Haipeng Yu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Mingyang Wang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Aihua Liu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
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4
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Wang H, Wu F, Wu L, Guan J, Niu X. Nanozyme colorimetric sensor array based on monatomic cobalt for the discrimination of sulfur-containing metal salts. JOURNAL OF HAZARDOUS MATERIALS 2023; 456:131643. [PMID: 37236116 DOI: 10.1016/j.jhazmat.2023.131643] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 05/04/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023]
Abstract
The identification of sulfur-containing metal salts (SCMs) is of great interest because they play an important role in many biological processes and diseases. Here, we constructed a ternary channel colorimetric sensor array to detect multiple SCMs simultaneously, relying on monatomic Co embedded in nitrogen-doped graphene nanozyme (CoN4-G). Due to the unique structure, CoN4-G exhibits activity similar to native oxidases, capable of catalysing directly the oxidization of 3,3',5,5'-tetramethylbenzidine (TMB) by O2 molecules independent of H2O2. Density functional theory (DFT) calculations suggest that CoN4-G has no potential barrier in the whole reaction route, thus presenting higher oxidase-like catalytic activity. Based on different degrees of TMB oxidation, different colorimetric response changes are obtained as "fingerprints" on the sensor array. The sensor array can discriminate different concentrations of unitary, binary, ternary, and quaternary SCMs and has been successfully applied to detect six real samples (soil, milk, red wine and egg white). To advance the field detection of the above four types of SCMs, we creatively propose a smartphone-based autonomous detection platform with a linear range of 1.6-320 μM and a limit of detection of 0.0778-0.218 μM, which demonstrates the potential use of sensor arrays in the application of disease diagnosis and food and environment monitoring.
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Affiliation(s)
- Hongsu Wang
- College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Fengling Wu
- College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Lifang Wu
- College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Jingqi Guan
- Institute of Physical Chemistry, College of Chemistry, Jilin University, 2519 Jiefang Road, Changchun 130021, PR China.
| | - Xiaodi Niu
- College of Food Science and Engineering, Jilin University, Changchun 130062, PR China.
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5
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Cai Y, Dong T, Zhang X, Liu A. Morphology and Enzyme-Mimicking Activity of Copper Nanoassemblies Regulated by Peptide: Mechanism, Ultrasensitive Assaying of Trypsin, and Screening of Trypsin Inhibitors. Anal Chem 2022; 94:18099-18106. [PMID: 36515251 DOI: 10.1021/acs.analchem.2c04767] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
To regulate nanostructure synthesis is of crucial importance for developing various applications, including catalysis, bioanalysis, and optical devices. Herein, the morphology and peroxidase (POD)-mimicking activity of peptide-templated copper nanoassemblies (Cu NAs) are regulable with peptide types. The Cu NAs templated with peptide containing single cysteine are uniform nanoclusters with strong POD-like activity. However, the Cu NAs templated with peptide containing two cysteines are fusiform-like with very weak POD-like activity. Unexpectedly, the POD-like activity of Cu NAs templated with peptide containing two cysteines with lysine between the cysteines is significantly enhanced when trypsin is incubated, which is unchanged for the Cu NAs templated with peptide containing two cysteines without lysine between the cysteines. The remarkably enhanced POD-mimicking activity originates from trypsin specifically shearing the peptide bond on the lysine, thereby allowing the aggregated Cu NAs to unravel into individual nanoclusters. Therefore, a robust colorimetric sensing platform was constructed for sensitive and selective detection of trypsin, which showed a linear concentration range of 3-1000 nM and a detection limit of 0.82 nM (S/N = 3). More interestingly, featured by trypsin inhibitor restraining trypsin activity, it enabled us to screen trypsin inhibitors as well. Subsequently, the developed assay was applied to detect trypsin in serum samples with good accuracy and reproducibility. Thus, this strategy shows great potential application in the clinic for diagnosis of trypsin-indicating diseases as well as the screening of trypsin inhibitor-based anti-cancer drugs.
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Affiliation(s)
- Yuanyuan Cai
- Institute for Chemical Biology and Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Rd, Qingdao 266071, China.,School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Rd, Qingdao 266071, China
| | - Tao Dong
- School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Rd, Qingdao 266071, China
| | - Xin Zhang
- Institute for Chemical Biology and Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Rd, Qingdao 266071, China
| | - Aihua Liu
- Institute for Chemical Biology and Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Rd, Qingdao 266071, China
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6
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Wang Q, Luo Z, Wu YL, Li Z. Recent Advances in Enzyme‐Based Biomaterials Toward Diabetic Wound Healing. ADVANCED NANOBIOMED RESEARCH 2022. [DOI: 10.1002/anbr.202200110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Qi Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology School of Pharmaceutical Sciences Xiamen University Xiamen 361102 China
| | - Zheng Luo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology School of Pharmaceutical Sciences Xiamen University Xiamen 361102 China
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Innovis, #08-03 Singapore 138634 Singapore
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology School of Pharmaceutical Sciences Xiamen University Xiamen 361102 China
| | - Zibiao Li
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Innovis, #08-03 Singapore 138634 Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2) Agency for Science, Technology and Research (A*STAR) 2 Fusionopolis Way Singapore 138634 Singapore
- Department of Materials Science and Engineering National University of Singapore 9 Engineering Drive 1 Singapore 117576 Singapore
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7
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Zhang Y, Tang C, Zhang M, Huang Z, Cai Z. Gold Nanoclusters as a Fluorescent Probe for the Sensitive Determination of Morin and Sensing of Temperature. ChemistrySelect 2022. [DOI: 10.1002/slct.202203005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Yi Zhang
- College of Chemical Engineering Hubei University of Arts and Science Xiangyang 441053 Hubei Province P. R. China
| | - Chang Tang
- College of Chemical Engineering Hubei University of Arts and Science Xiangyang 441053 Hubei Province P. R. China
| | - Minglu Zhang
- College of Chemical Engineering Hubei University of Arts and Science Xiangyang 441053 Hubei Province P. R. China
| | - Zilong Huang
- College of Chemical Engineering Hubei University of Arts and Science Xiangyang 441053 Hubei Province P. R. China
| | - Zhifeng Cai
- Department of Chemistry Taiyuan Normal University Jinzhong 030619 Shanxi Province P. R. China
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8
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GAO R, FU Q, LUO D, LIU B. Multi-signal information increment sensing system for point-of-care testing of NADH based on cobalt oxyhydroxide nanoflakes. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1016/j.cjac.2022.100154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Niu L, Cai Y, Dong T, Zhang Y, Liu X, Zhang X, Zeng L, Liu A. Vanadium nitride@carbon nanofiber composite: Synthesis, cascade enzyme mimics and its sensitive and selective colorimetric sensing of superoxide anion. Biosens Bioelectron 2022; 210:114285. [PMID: 35489274 DOI: 10.1016/j.bios.2022.114285] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/05/2022] [Accepted: 04/11/2022] [Indexed: 01/04/2023]
Abstract
Nanozymes featuring with favorable activity, good stability and easy scale-up production, are promising to replace natural enzymes for various applications. However, it remains a challenge to explore the cascade reactions of multi-enzyme mimics, aiming at synergistic catalysis for various applications. Herein, vanadium nitride nanoparticles deposited on carbon nanofibers (VN@CNFs) composite was facilely prepared by typical electrospinning route with subsequently ammonia reduction process. The nanocomposite showed excellent peroxidase (POD)-like and superoxide dismutase (SOD)-like activities. Additionally, their catalytic mechanisms were systematically researched. Coupling of SOD-like with POD-like as cascade enzyme, a selective and sensitive colorimetric detection of superoxide anion (O2•-) was explored, which has two linear parts, 0.05-30 μM and 30-250 μM O2•- with the LOD of 0.0167 μM (S/N = 3). The as-proposed method was applicable to practical samples detection with satisfactory accuracy and recovery. Therefore, the VN@CNFs composite shows great prospect in biosensing, superoxide anion removal and biocatalysis.
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Affiliation(s)
- Lingxi Niu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Yuanyuan Cai
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Tao Dong
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China; School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Yujiao Zhang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Xuxin Liu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Xin Zhang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Lingxing Zeng
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, Fujian, 350007, China.
| | - Aihua Liu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China.
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10
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Cai Y, Niu L, Liu X, Zhang Y, Zheng Z, Zeng L, Liu A. Hierarchical porous MoS 2 particles: excellent multi-enzyme-like activities, mechanism and its sensitive phenol sensing based on inhibition of sulfite oxidase mimics. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:128053. [PMID: 34915296 DOI: 10.1016/j.jhazmat.2021.128053] [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: 09/17/2021] [Revised: 11/25/2021] [Accepted: 12/07/2021] [Indexed: 05/14/2023]
Abstract
It is important to exploit highly efficient methods for detecting pollutants selectively and sensitively. Artificial enzymes are promising to replace natural enzymes with diverse functions for sustainable developments and various applications. However, it remains the challenge to develop novel mimic enzymes or multi-enzyme mimics for pollutant detection. Herein we report hierarchical porous MoS2 particles prepared by a simple hydrothermal method, which demonstrated excellent sulfite oxidase (SuOx)-, nicotinamide adenine dinucleotide (NADH) oxidase- and superoxide dismutase-mimicking activities. In addition, the catalytic conditions for SuOx-like and NADH oxidase-like activities of MoS2 were optimized. The catalytic mechanism of the NADH oxidase mimics is that O2 involves in the oxidation of NADH, to generate O2.- intermediate and finally turn to H2O2, while SuOx mimics comes from that MoS2 particles can effectively catalyze sulfite to reduce [Fe(CN)6]3-. Based on the excellent SuOx-like activity of MoS2 particles, while phenol can inhibit the oxidation of sulfite, a phenol colorimetric sensor was explored with the dynamic range of 2-1000 μM and the limit of detection of 0.72 μM, applicable to detect phenol in effluents. Therefore, MoS2 particles with the SuOx-like, NADH oxidase-like and SOD-like activities has broad application prospects in environmental monitoring and bio-analysis.
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Affiliation(s)
- Yuanyuan Cai
- Institute for Chemical Biology & Biosensing, College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Lingxi Niu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Xuan Liu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yujiao Zhang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Zongmei Zheng
- Institute for Chemical Biology & Biosensing, College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Lingxing Zeng
- College of Environmental Science and Engineering, Fujian Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Aihua Liu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, and School of Pharmacy, Medical College, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
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Ghosh S, Singh P, Roy S, Bhardwaj K, Jaiswal A. Superior Peroxidase-Like activity of Gold Nanorattles in Ultrasensitive H2O2 Sensing and Antioxidant Screening. Chembiochem 2022; 23:e202100691. [PMID: 35128765 DOI: 10.1002/cbic.202100691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/04/2022] [Indexed: 11/06/2022]
Abstract
Nanozymes are artificial enzyme systems which are easy to produce, highly stable and cost-effective in comparison to natural enzymes. Herein, we evaluated the peroxidase like activity of gold nanorattles (AuNRTs) having a solid gold octahedron core and thin, porous cubic gold shell. We also prepared solid gold nanocube and nanosphere of similar sizes and surface charge as that of AuNRTs and compared its activity with standard horse radish peroxidase (HRP) enzyme. All the prepared nanostructures followed Michaelis-Menten kinetics as observed from their substrate vs initial reaction velocity plot using 3',5,5'-tetramethylbenzidine (TMB) as a substrate. The kinetic parameters demonstrated that AuNRTs possess the best nanozymatic activity with lowest K M and highest catalytic efficiency (K cat /K M ). The better activity of AuNRTs compared with other nanostructures and HRP could be attributed to the hollow porous structure with a solid core where different surfaces are available for the nanozymatic reaction. AuNRTs, being the best amongst the tested nanozymes were further used for the sensing of hydrogen peroxide (H 2 O 2 ) and it was able to sense H 2 O 2 down to 0.5 μM concentration. Further, two naturally occurring antioxidants, tannic acid and ascorbic acid showed inhibitory effect on the peroxidase like activity of AuNRTs in a concentration dependent manner which can be further be used for screening of antioxidants or for determining the antioxidant potential.
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Affiliation(s)
- Swachhatoa Ghosh
- IIT Mandi: Indian Institute of Technology Mandi, School of Basic Sciences, INDIA
| | - Prem Singh
- IIT Mandi: Indian Institute of Technology Mandi, School of Basic Sciences, INDIA
| | - Shounak Roy
- IIT Mandi: Indian Institute of Technology Mandi, School of Basic Sciences, INDIA
| | - Keshav Bhardwaj
- Indian Institute of Technology Mandi, School of Basic Sciences, INDIA
| | - Amit Jaiswal
- Indian Institute of Technology Mandi, School of Basic Sciences, Kamand, 175005, Mandi, INDIA
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