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Chen Y, Huang Y, Zhang S, Gao L, Dai H. A photoelectrochemical biosensor based on self-calibration platform of carbon-rich plasmonic probe with near-infrared driving signal amplification. Biosens Bioelectron 2024; 256:116274. [PMID: 38599074 DOI: 10.1016/j.bios.2024.116274] [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: 12/23/2023] [Revised: 03/24/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024]
Abstract
Exploring the photochemical (PEC) method induced by low-energy light source makes great significance to achieve high stability and accurate analysis. A sensing platform driven by near-infrared (NIR) light was designed by making the biochemically encoded carbon rich plasmonic hybrid (CPH) probe, the peptide@C-Mo2C. The inherent plasmonic effect of C-Mo2C CPH can directly absorb NIR light, thus starting effective electronic-hole pairs separation. Moreover, the photothermal effect of C-Mo2C CPH also promoted the reaction yield of photothermal catalyst reaction on sensing interface to assist the PEC signal amplification. In the presence of target trypsin, it cleaves the peptides, resulting in the release of peptide@C-Mo2C probe from interface, which leads to a relative decrease in PEC signal. More importantly, a self-calibration system consisting of two independent PEC test channels attempted to eliminate the influence of background signal and baseline drift. The test channel was used to specify the recognition target, while the blank channel was used as a reference. Therefore, the signal difference between two channels was recorded, so as to obtain results with less error and higher stability. In this NIR driven PEC sensor, the carbon rich probe with direct and efficient NIR light conversion promoted the sensitivity and a self-calibration system guaranteed the stability which provided innovative thoughts for developing ingenious PEC sensor.
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Affiliation(s)
- Yanjie Chen
- College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang, 324000, China
| | - Yitian Huang
- College of Chemistry and Materials, Fujian Normal University, Fuzhou, Fujian, 350108, China
| | - Shupei Zhang
- College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang, 324000, China
| | - Lihong Gao
- College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang, 324000, China.
| | - Hong Dai
- College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang, 324000, China.
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Buglak AA, Kononov AI. Silver cluster interactions with Pterin: Complex structure, binding energies and spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121467. [PMID: 35689845 DOI: 10.1016/j.saa.2022.121467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/14/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Metal nanoclusters (NCs) are widely present today in biosensing, bioimaging, and diagnostics due to their small size, great biocompatibility, and sensitivity to the biomolecular environment. Silver (Ag) NCs often possess intense fluorescence, photostability, and low photobleaching, which is in high demand during the detection of organic molecules. Pterins are small compounds, which are used in medicine as biomarkers of oxidative stress, cardiovascular diseases, neurotransmitter synthesis, inflammation and immune system activation. It is experimentally possible to detect pterin (Ptr) through the adsorption on Ag colloid. We optimized geometries and evaluated the binding energy in Ptr-Agnq complexes (n = 1-6; q = 0, +1, +2) using quantum chemistry methods. Different Ptr atoms were preferential for silver attachment depending on NC charge and size. The highest Eb was obtained for the complexes between the Ptr0 and Ag32+ (-50.8 kcal mol-1), between Ptr-1 and Ag32+ (-64.8 kcal mol-1), which means that these complexes should be formed preferably in aqueous solutions in acidic and alkaline media, respectively. The colorimetric detection of pterin with silver clusters does not seem to be promising. However, intense S0→S1 transitions of Ag5+ complexes look promising for luminescent Ptr detection. SERS detection of pterin is better to be done at pH > 8 since deprotonated pterin Raman undergo more dramatic changes upon addition of Ag than the neutral pterin. The characteristics of absorption and vibrational spectra of silver-pterin should be exploited during biosensor development.
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Affiliation(s)
- Andrey A Buglak
- St. Petersburg State University, 199034 Saint-Petersburg, Russia; Kazan Federal University, 420008 Kazan, Russia.
| | - Alexei I Kononov
- St. Petersburg State University, 199034 Saint-Petersburg, Russia
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Gu P, Lu Y, Li S, Ma C. A Label-Free Fluorescence Aptasensor Based on G-Quadruplex/Thioflavin T Complex for the Detection of Trypsin. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27186093. [PMID: 36144829 PMCID: PMC9503660 DOI: 10.3390/molecules27186093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 11/30/2022]
Abstract
A novel, label-free fluorescent assay has been developed for the detection of trypsin by using thioflavin T as a fluorescent probe. A specific DNA aptamer can be combined by adding cytochrome c. Trypsin hydrolyzes the cytochrome c into small peptide fragments, exposing the G-quadruplex part of DNA aptamer, which has a high affinity for thioflavin T, which then enhances the fluorescence intensity. In the absence of trypsin, the fluorescence intensity was inhibited as the combination of cytochrome c and the DNA aptamer impeded thioflavin T’s binding. Thus, the fluorescent biosensor showed a linear relationship from 0.2 to 60 μg/mL with a detection limit of 0.2 μg/mL. Furthermore, the proposed method was also successfully employed for determining trypsin in biological samples. This method is simple, rapid, cheap, and selective and possesses great potential for the detection of trypsin in bioanalytical and biological samples and medical diagnoses.
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Black phosphorus nanosheets based sensitive protease detection and inhibitor screening. Talanta 2019; 197:270-276. [PMID: 30771934 DOI: 10.1016/j.talanta.2019.01.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 01/01/2019] [Accepted: 01/05/2019] [Indexed: 02/06/2023]
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A Gold Nanoclusters Film Supported on Polydopamine for Fluorescent Sensing of Free Bilirubin. SENSORS 2019; 19:s19071726. [PMID: 30974923 PMCID: PMC6480062 DOI: 10.3390/s19071726] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/08/2019] [Accepted: 04/08/2019] [Indexed: 02/07/2023]
Abstract
Serum bilirubin is an important biomarker for the diagnosis of various types of liver diseases and blood disorders. A polydopamine/gold nanoclusters composite film was fabricated for the fluorescent sensing of free bilirubin. Bovine serum albumin (BSA)-stabilized gold nanoclusters (AuNCs) were used as probes for biorecognition. The polydopamine film was utilized as an adhesion layer for immobilization of AuNCs. When the composite film was exposed to free bilirubin, due to the complex that was formed between BSA and free bilirubin, the fluorescence intensity of the composite film was gradually weakened as the bilirubin concentration increased. The fluorescence quenching ratio (F0/F) was linearly proportional to free bilirubin over the concentration range of 0.8~50 μmol/L with a limit of detection of 0.61 ± 0.12 μmol/L (S/N = 3). The response was quick, the film was recyclable, and common ingredients in human serum did not interfere with the detection of free bilirubin.
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Song L, Zhang L, Xu K, Huang Y, Gao P, Fang H, Zhang J, Nie Z, Chen T. Fluorescent microsphere probe for rapid qualitative and quantitative detection of trypsin activity. NANOSCALE ADVANCES 2019; 1:162-167. [PMID: 36132465 PMCID: PMC9473197 DOI: 10.1039/c8na00111a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 10/15/2018] [Indexed: 06/15/2023]
Abstract
Current technologies still face a big challenge to achieve simultaneous rapid qualitative and quantitative detection of trypsin. In our present study, we developed a simple and effective strategy to sensitively, qualitatively and quantitatively analyze the activity of trypsin using a fluorescent polystyrene (PS) microsphere probe. PS spheres were first functionalized by the surface coating of polyethylene glycol (PEG), which could significantly decrease the possibility of nonspecific physical adsorption of the fluorescein isothiocyanate isomer-modified peptide (peptide-FITC). Then, the obtained PS-PEG spheres were chemically interacted with peptide-FITC, which were then employed to monitor the real-time activity of trypsin. The peptide used in our work contained rich lysine and arginine residues, which were the recognition sites of trypsin. When trypsin interacted with the PS-FITC-peptide microspheres, the peptide-FITC rapidly decomposed into free small fragments in solution, resulting in a gradual decrease in the fluorescence of the PS spheres. By taking advantage of the fluorescence changes using confocal microscopy imaging and fluorescence spectrum intensity, it is easy to achieve the qualitative and quantitative detection of trypsin, with a highly sensitive detection limit as low as 0.5 ng mL-1 and high selectivity. Thus, the designed fluorescent PS microsphere probe would be very promising in various applications such as food safety inspection, personal healthcare and on-site environmental monitoring.
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Affiliation(s)
- Liping Song
- Division of Polymer and Composite Materials, Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science 1219 Zhongguan West Road Ningbo 315201 China
- University of Chinese Academy of Sciences 19A, Yuquan Road Beijing 100049 China
| | - Lei Zhang
- Division of Polymer and Composite Materials, Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science 1219 Zhongguan West Road Ningbo 315201 China
| | - Kai Xu
- Department of Urology, Zhujiang Hospital of Southern Medical University Guangzhou China
| | - Youju Huang
- Division of Polymer and Composite Materials, Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science 1219 Zhongguan West Road Ningbo 315201 China
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Pan Gao
- Zhejiang Cellpro Biotech Co.,Ltd, Ningbo National High-tech Building No. 2 Elite Tech Park, 139 Xinhui Rd. Ningbo Zhejiang China
| | - Haiyan Fang
- Zhejiang Cellpro Biotech Co.,Ltd, Ningbo National High-tech Building No. 2 Elite Tech Park, 139 Xinhui Rd. Ningbo Zhejiang China
| | - Jiawei Zhang
- Division of Polymer and Composite Materials, Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science 1219 Zhongguan West Road Ningbo 315201 China
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland College Park Maryland 20742 USA
| | - Tao Chen
- Division of Polymer and Composite Materials, Key Laboratory of Bio-Based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science 1219 Zhongguan West Road Ningbo 315201 China
- University of Chinese Academy of Sciences 19A, Yuquan Road Beijing 100049 China
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Fabrication of fluorescent biosensing platform based on graphene oxide-DNA and their application in biomolecule detection. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.07.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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8
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Poly(styrene-4-sulfonate)-protected copper nanoclusters as a fluorometric probe for sequential detection of cytochrome c and trypsin. Mikrochim Acta 2018; 185:383. [DOI: 10.1007/s00604-018-2920-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 07/15/2018] [Indexed: 01/22/2023]
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9
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Sato D, Kondo T, Kato T. Dual emissive bispyrene peptide probes for highly sensitive measurements of trypsin activity and evaluation of trypsin inhibitors. Bioorg Med Chem 2018; 26:3468-3473. [DOI: 10.1016/j.bmc.2018.05.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/11/2018] [Accepted: 05/15/2018] [Indexed: 01/15/2023]
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10
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Ma C, Liu H, Wu K, Chen M, He H, Wang K, Xia K. A turn-on fluorescence assay of alkaline phosphatase activity using a DNA–silver nanocluster probe. NEW J CHEM 2018. [DOI: 10.1039/c7nj04894g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A label-free fluorescence assay has been developed for the detection of alkaline phosphatase based on DNA–silver nanocluster probes.
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Affiliation(s)
- Changbei Ma
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Haisheng Liu
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Kefeng Wu
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Mingjian Chen
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Hailun He
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410081
- China
| | - Kun Xia
- School of Life Sciences
- Central South University
- Changsha 410013
- China
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Khandelwal P, Poddar P. Fluorescent metal quantum clusters: an updated overview of the synthesis, properties, and biological applications. J Mater Chem B 2017; 5:9055-9084. [DOI: 10.1039/c7tb02320k] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A brief history of metal quantum clusters, their synthesis methods, physical properties, and an updated overview of their applications is provided.
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Affiliation(s)
- Puneet Khandelwal
- Physical & Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune – 411008
- India
| | - Pankaj Poddar
- Physical & Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune – 411008
- India
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