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Fang D, Tang S, Wu Z, Chen C, Wan M, Mao C, Zhou M. Electrochemical sensor based on micromotor technology for detection of Ox-LDL in whole blood. Biosens Bioelectron 2022; 217:114682. [PMID: 36115124 DOI: 10.1016/j.bios.2022.114682] [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: 06/30/2022] [Accepted: 08/30/2022] [Indexed: 11/15/2022]
Abstract
Detecting the concentration of oxidized low-density lipoprotein (Ox-LDL) in whole blood is of great significance for monitoring the development of atherosclerosis. In order to simplify the complex processing steps of blood sample before the detection, an electrochemical sensor based on micromotor technology was designed, which was called magnesium (Mg)-Fe3O4@ prussian blue (PB)@ antibody of Ox-LDL (Ab)@ bovine serum albumin (BSA). The active capture of Ox-LDL in whole blood can be realized by the help of the movement of Mg microsphere with the driving force of H2. Then the captured Ox-LDL was collected on the surface of the magnetic glassy carbon electrode (MGCE) by self-made funnel device, and the content of Ox-LDL was detected by electrochemical workstation in the way of chronoamperometry (i-t). Due to the application of micromotor, the electrochemical sensor proposed in this study had good detection efficiency for Ox-LDL in whole blood with range from 1 × 10-2 μg/mL to 10 μg/mL, and the limit of detection (LOD) towards Ox-LDL was 9.80 × 10-4 μg/mL. The electrochemical sensor based on micromotor technology provides a rapid, effective, and sensitive method for the detection of Ox-LDL in whole blood.
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Affiliation(s)
- Dan Fang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023, China
| | - Shuwan Tang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023, China
| | - Ziyu Wu
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Chenglong Chen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023, China
| | - Mimi Wan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023, China
| | - Chun Mao
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China; National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, 210023, China.
| | - Min Zhou
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China.
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Ni Y, Lv Z, Wang Z, Kang S, He D, Liu R. Immobilization and Evaluation of Penicillin G Acylase on Hydroxy and Aldehyde Functionalized Magnetic α-Fe 2O 3/Fe 3O 4 Heterostructure Nanosheets. Front Bioeng Biotechnol 2022; 9:812403. [PMID: 35155412 PMCID: PMC8831838 DOI: 10.3389/fbioe.2021.812403] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/10/2021] [Indexed: 01/08/2023] Open
Abstract
Magnetic α-Fe2O3/Fe3O4 heterostructure nanosheets were fabricated via hydrothermal calcination. The activity of penicillin G acylase (PGA), which was covalently immobilized onto silica-decorated heterostructure nanosheets, achieved the highest activity of 387.03 IU/g after 18 h of incubation with 0.1 ml of PGA. In contrast, the activity of free PGA reached the highest level when the temperature was 45°C with a pH of 8.0. However, the activity of free PGA changed more dramatically than immobilized PGA as the relative conditions changed. Moreover, the Michaelis-Menten constant (Km) and reusability of immobilized PGA were also explored. The results showed that free PGA Km and maximum rate (Vmax) were 0.0274 M and 1.167 μl/min, respectively. Km and Vmax values of immobilized PGA were 0.1082 M and 1.294 μl/min, respectively. After 12 cycles of repetitive use, immobilized PGA remained approximately 66% of its initial activity, indicating that the PGA immobilized onto the heterostructure nanosheets showed better stability and reusability than free PGA.
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Affiliation(s)
- Yun Ni
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Zhixiang Lv
- The People’s Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Zhenjiang, China
| | - Zhou Wang
- College of Vanadium and Titanium, Panzhihua University, Panzhihua, China
| | - Shouyu Kang
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dawei He
- Affiliated Kunshan Hospital, Jiangsu University, Suzhou, China
| | - Ruijiang Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
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Wu X, Ru Y, Bai Y, Zhang G, Shi Y, Pang H. PBA composites and their derivatives in energy and environmental applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214260] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Zhang H, Yao S, Song X, Xu K, Wang J, Li J, Zhao C, Jin M. One-step colorimetric detection of Staphylococcus aureus based on target-induced shielding against the peroxidase mimicking activity of aptamer-functionalized gold-coated iron oxide nanocomposites. Talanta 2021; 232:122448. [PMID: 34074432 DOI: 10.1016/j.talanta.2021.122448] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 04/04/2021] [Accepted: 04/18/2021] [Indexed: 12/30/2022]
Abstract
Staphylococcus aureus (S. aureus) is one of the most threatened food-borne pathogens. Thus, it is necessary to establish fast, portable and reliable tools to realize the identification of S. aureus. Herein, the authors describe an effective colorimetric-based biosensor for the detection of S. aureus in multiple types of samples. Initially, a nanozyme composed of gold and iron oxide nanoparticles was synthesized and further modified with S. aureus-specific aptamer via Au-S bond. By utilizing the intrinsic peroxidase-like activity of the above magnetic conjugates, 3,3',5,5'-tetramethylbenzidine (TMB) can be transferred to oxTMB by oxidation of hydrogen peroxide (H2O2), resulting in a visible blue color. However, the introduction of S. aureus can turn off the UV-vis absorbance signals of TMB-H2O2 system, due to the identification property of the nanozyme probe. Consequently, the optical density of the mixed solution measured at 652 nm decreased linearly as the concentration of S. aureus increased from 10 to 106 CFU mL-1, with the visible limit of detection as low as 10 CFU mL-1. The as-prepared sensor can detect S. aureus in spiked water, milk and urine samples quantitatively during 12 min without any pre-enrichment, separation or washing steps. In our perception, the one-step colorimetric assay show promise in practical on-site detection of S. aureus.
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Affiliation(s)
- Huiwen Zhang
- School of Public Health, Jilin University, Changchun, 130021, China
| | - Shuo Yao
- School of Public Health, Jilin University, Changchun, 130021, China
| | - Xiuling Song
- School of Public Health, Jilin University, Changchun, 130021, China
| | - Kun Xu
- School of Public Health, Jilin University, Changchun, 130021, China
| | - Juan Wang
- School of Public Health, Jilin University, Changchun, 130021, China
| | - Juan Li
- School of Public Health, Jilin University, Changchun, 130021, China.
| | - Chao Zhao
- School of Public Health, Jilin University, Changchun, 130021, China.
| | - Minghua Jin
- School of Public Health, Jilin University, Changchun, 130021, China.
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Ye ML, Zhu Y, Lu Y, Gan L, Zhang Y, Zhao YG. Magnetic nanomaterials with unique nanozymes-like characteristics for colorimetric sensors: A review. Talanta 2021; 230:122299. [PMID: 33934768 DOI: 10.1016/j.talanta.2021.122299] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/20/2021] [Accepted: 02/22/2021] [Indexed: 12/21/2022]
Abstract
Colorimetric sensors for the rapid detection of numerous analytes have been widely applied in many fields such as biomedicine, food industry and environmental science due to their highly sensitive and selective response, easy operation and visual identification by naked eyes. In this review, the recent progress of the colorimetric sensors based on the magnetic nanomaterials with unique nanozymes-like catalytic activity (magnetic nanozyme) and their colorimetric sensing applications are presented. Emerging magnetic nanozyme-based colorimetric sensors, such as metal oxide/sulfides-based, metal-based, carbon-based, and aptamer-conjugated magnetic nanomaterials, offer many desirable features for target analytes detection. And due to the unique nanoscale physical-chemical properties, magnetic nanozymes have been used to mimic the catalytic activity of natural enzymes such as peroxidases, oxidases and catalases. This review also highlights the catalytic mechanisms of enzyme-like reactions, and promising colorimetric sensing system for the detection of chemical compounds like H2O2, pesticide, ascorbic acid, dopamine, tetracyclines, perfluorooctane sulfonate, phenolic compounds, heavy metal ion and sulfite have been deeply discussed. In addition, the remaining challenges and future directions in utilizing magnetic nanozyme for colorimetric sensors are addressed.
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Affiliation(s)
- Ming-Li Ye
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China; Department of Environmental Engineering, Wuchang University of Technology, Wuhan, 430223, China
| | - Yan Zhu
- Department of Environmental Engineering, Wuchang University of Technology, Wuhan, 430223, China
| | - Yin Lu
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Lu Gan
- Zhejiang University Hospital, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Yun Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.
| | - Yong-Gang Zhao
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, Zhejiang, 315010, China.
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Qin Y, Wu G, Guo Y, Ke D, Yin J, Wang D, Fan X, Liu Z, Ruan L, Hu Y. Engineered glyphosate oxidase coupled to spore-based chemiluminescence system for glyphosate detection. Anal Chim Acta 2020; 1133:39-47. [PMID: 32993872 DOI: 10.1016/j.aca.2020.07.077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 10/23/2022]
Abstract
The extensive and intensive utilization of glyphosate (Glyp) caused public concerns on the potential risk of environment and health resulted from the chemical residues. Therefore, the development of a high-selective, low-cost and easy-operation Glyp detection methods is highly desired. Screening highly selective enzymes by directed evolution is important in practical applications. Herein, a glyphosate oxidase (GlypO) preferring substrate Glyp to produce H2O2 was obtained via directed evolution from glycine oxidase obtained from Bacillus cereus (BceGO). The catalytic efficiency, specificity constant, and affinity enhancement factor of GlypO toward Glyp were increased by 2.85 × 103-fold; 2.25 × 105-fold; and 9.64 × 104-fold, respectively, compared with those of BceGO. The catalytic efficiency toward glycine decreased by 78.60-fold. The spores of Bacillus subtilis (B. subtilis) effectively catalyzed luminol-H2O2 reaction to create excellent chemiluminescence (CL) signal because CotA-laccase exists on their surface. Based on these findings, a new CL biosensor via coupling to biological reaction system was presented for Glyp detection. The CL biosensor exhibited several advantages, such as eco-friendliness, low cost, high selectivity and sensitivity, and good practical application prospects for environmental pollution control.
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Affiliation(s)
- Yuqing Qin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Gaobing Wu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yiming Guo
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Da Ke
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jiakang Yin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Donglin Wang
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xuezhu Fan
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ziduo Liu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lifang Ruan
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yonggang Hu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
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Cerium(III)-doped MoS2 nanosheets with expanded interlayer spacing and peroxidase-mimicking properties for colorimetric determination of hydrogen peroxide. Mikrochim Acta 2020; 187:111. [DOI: 10.1007/s00604-019-4078-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 12/07/2019] [Indexed: 01/03/2023]
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Fazli G, Esmaeilzadeh Bahabadi S, Adlnasab L, Ahmar H. A glassy carbon electrode modified with a nanocomposite prepared from Pd/Al layered double hydroxide and carboxymethyl cellulose for voltammetric sensing of hydrogen peroxide. Mikrochim Acta 2019; 186:821. [PMID: 31749054 DOI: 10.1007/s00604-019-3967-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 10/19/2019] [Indexed: 12/20/2022]
Abstract
A Pd/Al layered double hydroxide/carboxymethyl cellulose nanocomposite (CMC@Pd/Al-LDH) was fabricated using carboxymethyl cellulose as a green substrate via co-precipitation method. The synthesized nanocomposite was characterized using different methods such as scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray powder diffraction, transmission electron microscopy, and electrochemical techniques. A glassy carbon electrode (GCE) was then modified with the suspended composite to obtain an electrochemical sensor for hydrogen peroxide (H2O2). The voltammetric (cathodic) current of the modified GCE was measured at -380 mV (vs. Ag/AgCl), at the scan rate of 50 mV.s-1. Results show a linear dynamic range of 1 to 120 μM, and a 0.3 µM limit of detection (at S/N = 3). Intraday and interday relative standard deviations are in the ranges of 4.9-5.4% and 6.8-7.3%, respectively. The sensor was applied for the determination of H2O2 in basil extracts, milk, and spiked river water samples. The recoveries are between 96.60 and 102.30%. Graphical abstractA Pd/Al layered double hydroxide/carboxymethyl cellulose nanocomposite (CMC@Pd/Al-LDH) was fabricated via co-precipitation method and was characterized using scanning electron microscopy, Energy-dispersive X-ray spectroscopy, X-ray powder diffraction, transmission electron microscopy and electrochemical techniques. CMC@Pd/Al-LDH was used to fabricate H2O2 electrochemical sensor.
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Affiliation(s)
- Gozal Fazli
- Department of Biology, Faculty of Science, University of Zabol, P.O. Box, 98615-538, Zabol, Iran
| | | | - Laleh Adlnasab
- Department of Chemistry, Chemistry and Petrochemistry Research Center, Standard Research Institute, P.O. Box, 31745-139, Karaj, Iran
| | - Hamid Ahmar
- Department of Chemistry, Faculty of Science, University of Zabol, P.O. Box, 98615-538, Zabol, Iran
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