1
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Purcarea C, Ruginescu R, Banciu RM, Vasilescu A. Extremozyme-Based Biosensors for Environmental Pollution Monitoring: Recent Developments. BIOSENSORS 2024; 14:143. [PMID: 38534250 DOI: 10.3390/bios14030143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/04/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024]
Abstract
Extremozymes combine high specificity and sensitivity with the ability to withstand extreme operational conditions. This work presents an overview of extremozymes that show potential for environmental monitoring devices and outlines the latest advances in biosensors utilizing these unique molecules. The characteristics of various extremozymes described so far are presented, underlining their stability and operational conditions that make them attractive for biosensing. The biosensor design is discussed based on the detection of photosynthesis-inhibiting herbicides as a case study. Several biosensors for the detection of pesticides, heavy metals, and phenols are presented in more detail to highlight interesting substrate specificity, applications or immobilization methods. Compared to mesophilic enzymes, the integration of extremozymes in biosensors faces additional challenges related to lower availability and high production costs. The use of extremozymes in biosensing does not parallel their success in industrial applications. In recent years, the "collection" of recognition elements was enriched by extremozymes with interesting selectivity and by thermostable chimeras. The perspectives for biosensor development are exciting, considering also the progress in genetic editing for the oriented immobilization of enzymes, efficient folding, and better electron transport. Stability, production costs and immobilization at sensing interfaces must be improved to encourage wider applications of extremozymes in biosensors.
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Affiliation(s)
- Cristina Purcarea
- Department of Microbiology, Institute of Biology Bucharest of the Romanian Academy, 296 Splaiul Independentei, 060031 Bucharest, Romania
| | - Robert Ruginescu
- Department of Microbiology, Institute of Biology Bucharest of the Romanian Academy, 296 Splaiul Independentei, 060031 Bucharest, Romania
| | - Roberta Maria Banciu
- International Centre of Biodynamics, 1B Intrarea Portocalelor, 060101 Bucharest, Romania
- Department of Analytical and Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Alina Vasilescu
- International Centre of Biodynamics, 1B Intrarea Portocalelor, 060101 Bucharest, Romania
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2
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Pesticide Detection in Vegetable Crops Using Enzyme Inhibition Methods: a Comprehensive Review. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-022-02254-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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3
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Modafferi D, Zazubovich V, Kálmán L. Bound detergent molecules in bacterial reaction centers facilitate detection of tetryl explosive. PHOTOSYNTHESIS RESEARCH 2020; 145:145-157. [PMID: 32632533 DOI: 10.1007/s11120-020-00770-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
Bacterial reaction centers (BRC) from Rhodobacter sphaeroides were found to accelerate, about 100-fold, the reaction between tetryl (2,4,6-trinitrophenylmethylnitramine) explosive and n-lauryl-N-N-dimethylamine-N-oxide (LDAO) that results in the formation of picric acid-like product with characteristic UV-VIS absorption spectrum with peaks at 345 and 415 nm. Moreover, this product also affects the spectra of BRC cofactors in the NIR spectral region and stabilizes the conformational changes associated with slow charge recombination. The evolution of the NIR absorption changes correlated with the kinetics of the product formation. Comparison between the wild-type and the R26 carotenoid-less strain indicates that tetryl-LDAO reaction is roughly five times faster for R26, which allows for identifying the carotenoid binding site as the optimal reaction site. Another, less-defined reaction site is located in the BRC's hydrophobic cavity. These effects are highly selective for tetryl and not observed for several other widespread nitric explosives; slowed-down charge recombination allows for distinguishing between tetryl and QB-site herbicides. The current limit of detection is in the ppb range or ~ 100 nM. Details of the molecular mechanisms of the reactions and perspectives of using these effects in bioassays or biosensors for explosives detection are also discussed.
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Affiliation(s)
- Daniel Modafferi
- Department of Physics, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada
- Department of Chemical Engineering, McGill University, Montreal, QC, Canada
| | - Valter Zazubovich
- Department of Physics, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada.
| | - László Kálmán
- Department of Physics, Concordia University, 7141 Sherbrooke Street West, Montreal, QC, H4B 1R6, Canada.
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4
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Cardoso RM, Rocha DP, Rocha RG, Stefano JS, Silva RAB, Richter EM, Muñoz RAA. 3D-printing pen versus desktop 3D-printers: Fabrication of carbon black/polylactic acid electrodes for single-drop detection of 2,4,6-trinitrotoluene. Anal Chim Acta 2020; 1132:10-19. [PMID: 32980099 DOI: 10.1016/j.aca.2020.07.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/22/2020] [Accepted: 07/14/2020] [Indexed: 12/11/2022]
Abstract
The fabrication of carbon black/polylactic acid (PLA) electrodes using a 3D printing pen is presented and compared with electrodes obtained by a desktop fused deposition modelling (FDM) 3D printer. The 3D pen was used for the fast production of electrodes in two designs using customized 3D printed parts to act as template and guide the reproducible application of the 3D pen: (i) a single working electrode at the bottom of a 3D-printed cylindrical body and (ii) a three-electrode system on a 3D-printed planar substrate. Both devices were electrochemically characterized using the redox probe [Fe(CN)6]3-/4- via cyclic voltammetry, which presented similar performance to an FDM 3D-printed electrode or a commercial screen-printed carbon electrode (SPE) regarding peak-to-peak separation (ΔEp) and current density. The surface treatment of the carbon black/PLA electrodes fabricated by both 3D pen and FDM 3D-printing procedures provided substantial improvement of the electrochemical activity by removing excess of PLA, which was confirmed by scanning electron microscopic images for electrodes fabricated by both procedures. Structural defects were not inserted after the electrochemical treatment as shown by Raman spectra (iD/iG), which indicates that the use of 3D pen can replace desktop 3D printers for electrode fabrication. Inter-electrode precision for the best device fabricated using the 3D pen (three-electrode system) was 4% (n = 5) considering current density and anodic peak potential for the redox probe. This device was applied for the detection of 2,4,6-trinitrotoluene (TNT) via square-wave voltammetry of a single-drop of 100 μL placed upon the thee-electrode system, resulting in three reduction peaks commonly verified for TNT on carbon electrodes. Limit of detection of 1.5 μmol L-1, linear range from 5 to 500 μmol L-1 and RSD lower than 4% for 10 repetitive measurements of 100 μmol L-1 TNT were obtained. The proposed devices can be reused after polishing on sandpaper generating new electrode surfaces, which is an extra advantage over chemically-modified electrochemical sensors applied for TNT detection.
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Affiliation(s)
- Rafael M Cardoso
- Center for Research on Electroanalysis (NuPE), Institute of Chemistry, Federal University of Uberlândia, 38408-100, Uberlândia, MG, Brazil
| | - Diego P Rocha
- Center for Research on Electroanalysis (NuPE), Institute of Chemistry, Federal University of Uberlândia, 38408-100, Uberlândia, MG, Brazil
| | - Raquel G Rocha
- Center for Research on Electroanalysis (NuPE), Institute of Chemistry, Federal University of Uberlândia, 38408-100, Uberlândia, MG, Brazil
| | - Jéssica S Stefano
- Center for Research on Electroanalysis (NuPE), Institute of Chemistry, Federal University of Uberlândia, 38408-100, Uberlândia, MG, Brazil
| | - Rodrigo A B Silva
- Center for Research on Electroanalysis (NuPE), Institute of Chemistry, Federal University of Uberlândia, 38408-100, Uberlândia, MG, Brazil
| | - Eduardo M Richter
- Center for Research on Electroanalysis (NuPE), Institute of Chemistry, Federal University of Uberlândia, 38408-100, Uberlândia, MG, Brazil
| | - Rodrigo A A Muñoz
- Center for Research on Electroanalysis (NuPE), Institute of Chemistry, Federal University of Uberlândia, 38408-100, Uberlândia, MG, Brazil.
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5
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Korensky G, Chen X, Bao M, Miller A, Lapizco‐Encinas B, Park M, Du K. Single
Chlamydomonas reinhardtii
cell separation from bacterial cells and auto‐fluorescence tracking with a nanosieve device. Electrophoresis 2020. [DOI: 10.1002/elps.202000146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Grant Korensky
- Department of Mechanical Engineering Rochester Institute of Technology Rochester NY USA
| | - Xinye Chen
- Department of Mechanical Engineering Rochester Institute of Technology Rochester NY USA
- Department of Microsystems Engineering Rochester Institute of Technology Rochester NY USA
| | - Mengdi Bao
- Department of Mechanical Engineering Rochester Institute of Technology Rochester NY USA
| | - Abbi Miller
- Department of Biomedical Engineering Rochester Institute of Technology Rochester NY USA
| | | | - Myeongkee Park
- Department of Chemistry Dong‐A University Busan Republic of Korea
| | - Ke Du
- Department of Mechanical Engineering Rochester Institute of Technology Rochester NY USA
- Department of Microsystems Engineering Rochester Institute of Technology Rochester NY USA
- School of Chemistry and Materials Science Rochester Institute of Technology Rochester NY USA
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6
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Pan YQ, Xu X, Zhang Y, Zhang Y, Dong WK. A highly sensitive and selective bis(salamo)-type fluorescent chemosensor for identification of Cu 2+ and the continuous recognition of S 2-, Arginine and Lysine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 229:117927. [PMID: 31855812 DOI: 10.1016/j.saa.2019.117927] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 06/10/2023]
Abstract
A novel bis(salamo)-type chemosensor H3L was synthesized and characterized. It was found that the sensor molecule can selectively recognize Cu2+, and its L-Cu2+ is highly sensitive to the detection of S2- anion, Arginine and Lysine when dissolved in ethanol solvent. The sensor H3L can be used to identify a relay sensor for Cu2+, while the L-Cu2+ recognizes S2- anion, Arginine and Lysine with high selectivity and sensitivity over an acceptable physiological pH range. The detection line of the sensor molecule H3L is 1.02 × 10-6 M, and its binding constant to Cu2+ is 1.54 × 106 M-1. The detection line of L-Cu2+ as a sensor is calculated as 5.57 × 10-7 M, and its binding constants with S2- anion, Arginine and Lysine are 2.80 × 105 M-1, 5.32 × 106 M-1 and 5.94 × 106 M-1, respectively. The crystal structure of the Cu(II) complex [Cu4(L)2(CH3OH)2]·2NO3 with the sensor molecule H3L has been determined by single crystal X-ray crystallography.
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Affiliation(s)
- Ying-Qi Pan
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Xin Xu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Yu Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Yang Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Wen-Kui Dong
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China.
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7
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Scognamiglio V, Antonacci A, Arduini F, Moscone D, Campos EVR, Fraceto LF, Palleschi G. An eco-designed paper-based algal biosensor for nanoformulated herbicide optical detection. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:483-492. [PMID: 30947038 DOI: 10.1016/j.jhazmat.2019.03.082] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/20/2019] [Accepted: 03/18/2019] [Indexed: 05/23/2023]
Abstract
In this study we reported the development of a paper-based algal biosensor for the optical detection of nanoencapsulated-atrazine, a forefront nanoformulated herbicide with a high effective post-emergence herbicidal activity. In particular, the unicellular green photosynthetic algae Chlamydomonas reinhardtii was immobilised on a paper substrate soaked with an agar thin film and placed in a glass optical measurement cell, obtaining a totally environmental-friendly device. Nanoencapsulated-atrazine was detected by following the variable fluorescence (1-VJ) parameter, which decreased inversely proportional to the herbicide concentrations, in a range between 0.5 and 200 nM, indicating a linear relationship in the measured dose-response curves and a detection limit of 4 pM. Interference studies resulted in a very slight interference in presence of 2 ppm copper and 10 ppb arsenic at safety limits, as well as a slight matrix effect and a satisfactory recovery value of 96 ± 5% for 75 nM nanoencapsulated-atrazine in tap water. Stability studies were also performed obtaining a good storage stability up to 3 weeks. Results demonstrated the suitability of the proposed paper-based optical biosensor as a valid support in smart agriculture for on site, environmental friendly, cost effective and sensitive nanoencapsulated-atrazine analysis.
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Affiliation(s)
- Viviana Scognamiglio
- Institute of Crystallography, National Research Council, Department of Chemical Sciences and Materials Technologies, Via Salaria Km 29.3, 00015, Monterotondo Scalo, Rome, Italy.
| | - Amina Antonacci
- Institute of Crystallography, National Research Council, Department of Chemical Sciences and Materials Technologies, Via Salaria Km 29.3, 00015, Monterotondo Scalo, Rome, Italy
| | - Fabiana Arduini
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Danila Moscone
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Estefania V R Campos
- São Paulo State University (UNESP), Institute of Science and Technology of Sorocaba, Laboratory of Environmental Nanotechnology, Av. Três de Março, 511 - CEP 18-087-180, Sorocaba, Brazil
| | - Leonardo F Fraceto
- São Paulo State University (UNESP), Institute of Science and Technology of Sorocaba, Laboratory of Environmental Nanotechnology, Av. Três de Março, 511 - CEP 18-087-180, Sorocaba, Brazil
| | - Giuseppe Palleschi
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
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8
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Bucur B, Munteanu FD, Marty JL, Vasilescu A. Advances in Enzyme-Based Biosensors for Pesticide Detection. BIOSENSORS 2018; 8:E27. [PMID: 29565810 PMCID: PMC6022933 DOI: 10.3390/bios8020027] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/18/2018] [Accepted: 03/20/2018] [Indexed: 01/10/2023]
Abstract
The intensive use of toxic and remanent pesticides in agriculture has prompted research into novel performant, yet cost-effective and fast analytical tools to control the pesticide residue levels in the environment and food. In this context, biosensors based on enzyme inhibition have been proposed as adequate analytical devices with the added advantage of using the toxicity of pesticides for detection purposes, being more "biologically relevant" than standard chromatographic methods. This review proposes an overview of recent advances in the development of biosensors exploiting the inhibition of cholinesterases, photosynthetic system II, alkaline phosphatase, cytochrome P450A1, peroxidase, tyrosinase, laccase, urease, and aldehyde dehydrogenase. While various strategies have been employed to detect pesticides from different classes (organophosphates, carbamates, dithiocarbamates, triazines, phenylureas, diazines, or phenols), the number of practical applications and the variety of environmental and food samples tested remains limited. Recent advances focus on enhancing the sensitivity and selectivity by using nanomaterials in the sensor assembly and novel mutant enzymes in array-type sensor formats in combination with chemometric methods for data analysis. The progress in the development of solar cells enriched the possibilities for efficient wiring of photosynthetic enzymes on different surfaces, opening new avenues for development of biosensors for photosynthesis-inhibiting herbicides.
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Affiliation(s)
- Bogdan Bucur
- National Institute of Research and Development for Biological Sciences, Centre of Bioanalysis, 296 Splaiul Independentei, 060031 Bucharest, Romania.
| | - Florentina-Daniela Munteanu
- Faculty of Food Engineering, Tourism and Environmental Protection, "Aurel Vlaicu" University of Arad, Elena Dragoi, No. 2, 310330 Arad, Romania.
| | - Jean-Louis Marty
- BAE Laboratory, Université de Perpignan via Domitia, 52 Avenue Paul Alduy, 66860 Perpignan, France.
| | - Alina Vasilescu
- International Centre of Biodynamics, 1B Intrarea Portocalelor, 060101 Bucharest, Romania.
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9
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Cui Y. Wireless Biological Electronic Sensors. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2289. [PMID: 28991220 PMCID: PMC5677187 DOI: 10.3390/s17102289] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/26/2017] [Accepted: 09/28/2017] [Indexed: 11/17/2022]
Abstract
The development of wireless biological electronic sensors could open up significant advances for both fundamental studies and practical applications in a variety of areas, including medical diagnosis, environmental monitoring, and defense applications. One of the major challenges in the development of wireless bioelectronic sensors is the successful integration of biosensing units and wireless signal transducers. In recent years, there are a few types of wireless communication systems that have been integrated with biosensing systems to construct wireless bioelectronic sensors. To successfully construct wireless biological electronic sensors, there are several interesting questions: What types of biosensing transducers can be used in wireless bioelectronic sensors? What types of wireless systems can be integrated with biosensing transducers to construct wireless bioelectronic sensors? How are the electrical sensing signals generated and transmitted? This review will highlight the early attempts to address these questions in the development of wireless biological electronic sensors.
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Affiliation(s)
- Yue Cui
- College of Engineering, Peking University, Beijing 100871, China.
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10
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Younas N, Farrukh MA, Ali S, Ditta MA, Adnan R. Structural, optical, and catalytic properties of undoped and CdS doped CuO–ZnO nanoparticles. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2017. [DOI: 10.1134/s0036024417110152] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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TAKATSUJI Y, SAKAKURA T, MURAKAMI N, HARUYAMA T. Smooth Electron Transfer from a Photoexcited Dye to Semiconductor Electrode Through a Swingable Molecular Interface. ELECTROCHEMISTRY 2016. [DOI: 10.5796/electrochemistry.84.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Yoshiyuki TAKATSUJI
- Department of Biological Functions Engineering, Kyushu Institute of Technology
- Advanced Catalytic Transformation program for Carbon utilization (ACT-C), Japan Science and Technology Agency (JST)
| | - Tatsuya SAKAKURA
- Department of Biological Functions Engineering, Kyushu Institute of Technology
| | - Naoya MURAKAMI
- Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology
- Advanced Catalytic Transformation program for Carbon utilization (ACT-C), Japan Science and Technology Agency (JST)
| | - Tetsuya HARUYAMA
- Department of Biological Functions Engineering, Kyushu Institute of Technology
- Research center for Eco-fitting Technology, Kyushu Institute of Technology
- Advanced Catalytic Transformation program for Carbon utilization (ACT-C), Japan Science and Technology Agency (JST)
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12
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Zhang Y, Magdaong N, Frank HA, Rusling JF. Protein film voltammetry and co-factor electron transfer dynamics in spinach photosystem II core complex. PHOTOSYNTHESIS RESEARCH 2014; 120:153-167. [PMID: 23625504 DOI: 10.1007/s11120-013-9831-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 04/15/2013] [Indexed: 06/02/2023]
Abstract
Direct protein film voltammetry (PFV) was used to investigate the redox properties of the photosystem II (PSII) core complex from spinach. The complex was isolated using an improved protocol not used previously for PFV. The PSII core complex had high oxygen-evolving capacity and was incorporated into thin lipid and polyion films. Three well-defined reversible pairs of reduction and oxidation voltammetry peaks were observed at 4 °C in the dark. Results were similar in both types of films, indicating that the environment of the PSII-bound cofactors was not influenced by film type. Based on comparison with various control samples including Mn-depleted PSII, peaks were assigned to chlorophyll a (Chl a) (Em = -0.47 V, all vs. NHE, at pH 6), quinones (-0.12 V), and the manganese (Mn) cluster (Em = 0.18 V). PFV of purified iron heme protein cytochrome b-559 (Cyt b-559), a component of PSII, gave a partly reversible peak pair at 0.004 V that did not have a potential similar to any peaks observed from the intact PSII core complex. The closest peak in PSII to 0.004 V is the 0.18 V peak that was found to be associated with a two-electron process, and thus is inconsistent with iron heme protein voltammetry. The -0.47 V peak had a peak potential and peak potential-pH dependence similar to that found for purified Chl a incorporated into DMPC films. The midpoint potentials reported here may differ to various extents from previously reported redox titration data due to the influence of electrode double-layer effects. Heterogeneous electron transfer (hET) rate constants were estimated by theoretical fitting and digital simulations for the -0.47 and 0.18 V peaks. Data for the Chl a peaks were best fit to a one-electron model, while the peak assigned to the Mn cluster was best fit by a two-electron/one-proton model.
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Affiliation(s)
- Yun Zhang
- Department of Chemistry, University of Connecticut, Storrs, CT, 06269-3060, USA
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13
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Meng Z, Bao H, Wang J, Jiang C, Zhang M, Zhai J, Jiang L. Artificial ion channels regulating light-induced ionic currents in photoelectrical conversion systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:2329-34. [PMID: 24347524 DOI: 10.1002/adma.201304755] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Revised: 11/18/2013] [Indexed: 05/12/2023]
Abstract
Artificial ion channels are introduced into a photosystem II photoelectrical conversion system to mimic the photocurrent regulating of the natural PSII energy system on the thylakoid membrane. In the composite system, PSII complexes act as pumps to convert light into currents and artificial ion channels act as valves to regulate light-induced ionic currents.
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Affiliation(s)
- Zheyi Meng
- Key Laboratory of Bio-Inspired Smart Interfacial, Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China
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14
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Yáñez-Sedeño P, Agüí L, Villalonga R, Pingarrón JM. Biosensors in forensic analysis. A review. Anal Chim Acta 2014; 823:1-19. [PMID: 24746348 DOI: 10.1016/j.aca.2014.03.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/09/2014] [Accepted: 03/11/2014] [Indexed: 02/04/2023]
Abstract
Forensic analysis is an important branch of modern Analytical Chemistry with many legal and socially relevant implications. Biosensors can play an important role as efficient tools in this field considering their well known advantages of sensitivity, selectivity, easy functioning, affordability and capability of miniaturization and automation. This article reviews the latest advances in the use of biosensors for forensic analysis. The different methodologies for the transduction of the produced biological events are considered and the applications to forensic toxicological analysis, classified by the nature of the target analytes, as well as those related with chemical and biological weapons critically commented. The article provides several Tables where the more relevant analytical characteristics of the selected reported methods are gathered.
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Affiliation(s)
- P Yáñez-Sedeño
- University Complutense, Department of Analytical Chemistry, Faculty of Chemistry, Ciudad Universitaria, Madrid 28040, Spain.
| | - L Agüí
- University Complutense, Department of Analytical Chemistry, Faculty of Chemistry, Ciudad Universitaria, Madrid 28040, Spain
| | - R Villalonga
- University Complutense, Department of Analytical Chemistry, Faculty of Chemistry, Ciudad Universitaria, Madrid 28040, Spain
| | - J M Pingarrón
- University Complutense, Department of Analytical Chemistry, Faculty of Chemistry, Ciudad Universitaria, Madrid 28040, Spain
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15
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Lambreva MD, Giardi MT, Rambaldi I, Antonacci A, Pastorelli S, Bertalan I, Husu I, Johanningmeier U, Rea G. A powerful molecular engineering tool provided efficient Chlamydomonas mutants as bio-sensing elements for herbicides detection. PLoS One 2013; 8:e61851. [PMID: 23613953 PMCID: PMC3629139 DOI: 10.1371/journal.pone.0061851] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 03/15/2013] [Indexed: 11/28/2022] Open
Abstract
This study was prompted by increasing concerns about ecological damage and human health threats derived by persistent contamination of water and soil with herbicides, and emerging of bio-sensing technology as powerful, fast and efficient tool for the identification of such hazards. This work is aimed at overcoming principal limitations negatively affecting the whole-cell-based biosensors performance due to inadequate stability and sensitivity of the bio-recognition element. The novel bio-sensing elements for the detection of herbicides were generated exploiting the power of molecular engineering in order to improve the performance of photosynthetic complexes. The new phenotypes were produced by an in vitro directed evolution strategy targeted at the photosystem II (PSII) D1 protein of Chlamydomonas reinhardtii, using exposures to radical-generating ionizing radiation as selection pressure. These tools proved successful to identify D1 mutations conferring enhanced stability, tolerance to free-radical-associated stress and competence for herbicide perception. Long-term stability tests of PSII performance revealed the mutants capability to deal with oxidative stress-related conditions. Furthermore, dose-response experiments indicated the strains having increased sensitivity or resistance to triazine and urea type herbicides with I(50) values ranging from 6 × 10(-8) M to 2 × 10(-6) M. Besides stressing the relevance of several amino acids for PSII photochemistry and herbicide sensing, the possibility to improve the specificity of whole-cell-based biosensors, via coupling herbicide-sensitive with herbicide-resistant strains, was verified.
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Affiliation(s)
- Maya D Lambreva
- Institute of Crystallography, National Research Council, Monterotondo Scalo, Rome, Italy.
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16
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Sablok K, Bhalla V, Sharma P, Kaushal R, Chaudhary S, Suri CR. Amine functionalized graphene oxide/CNT nanocomposite for ultrasensitive electrochemical detection of trinitrotoluene. JOURNAL OF HAZARDOUS MATERIALS 2013; 248-249:322-328. [PMID: 23416475 DOI: 10.1016/j.jhazmat.2013.01.022] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 01/10/2013] [Accepted: 01/12/2013] [Indexed: 06/01/2023]
Abstract
Binding of electron-deficient trinitrotoluene (TNT) to the electron rich amine groups on a substrate form specific charge-transfer Jackson-Meisenheimer (JM) complex. In the present work, we report formation of specific JM complex on amine functionalized reduced graphene oxide/carbon nanotubes- (a-rGO/CNT) nanocomposite leading to sensitive detection of TNT. The CNT were dispersed using graphene oxide that provides excellent dispersion by attaching to CNT through its hydrophobic domains and solubilizes through the available OH and COOH groups on screen printed electrode (SPE). The GO was reduced electrochemically to form reduced graphene that remarkably increases electrochemical properties owing to the intercalation of high aspect CNT on graphene flakes as shown by TEM micrograph. The surface amine functionalization of dropcasted and rGO/CNT was carried out using a bi-functional cross linker ethylenediamine. The extent of amine functionalization on modified electrodes was confirmed using energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS) and confocal microscopy. The FTIR and Raman spectra further suggested the formation of JM complex between amine functionalized electrodes and TNT leading to a shift in peak intensity together with peak broadening. The a-rGO/CNT nanocomposite prepared electrode surface leads to ultra-trace detection of TNT upto 0.01 ppb with good reproducibility (n=3). The a-rGO/CNT sensing platform could be an alternate for sensitive detection of TNT explosive for various security and environmental applications.
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Affiliation(s)
- Kavita Sablok
- Institute of Microbial Technology (CSIR) Sector-39A, Chandigarh160036, India
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Current trends in explosive detection techniques. Talanta 2012; 88:14-29. [DOI: 10.1016/j.talanta.2011.11.043] [Citation(s) in RCA: 350] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 10/28/2011] [Accepted: 11/11/2011] [Indexed: 01/08/2023]
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Nangia Y, Bhalla V, Kumar B, Suri CR. Electrochemical stripping voltammetry of gold ions for development of ultra-sensitive immunoassay for chlorsulfuron. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2011.10.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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Bhalla V, Zazubovich V. Self-assembly and sensor response of photosynthetic reaction centers on screen-printed electrodes. Anal Chim Acta 2011; 707:184-90. [PMID: 22027137 DOI: 10.1016/j.aca.2011.09.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 09/08/2011] [Accepted: 09/15/2011] [Indexed: 11/24/2022]
Abstract
Photosynthetic reaction centers were immobilized onto gold screen-printed electrodes (Au-SPEs) using a self-assembled monolayer (SAM) of mercaptopropionic acid (MPA) which was deliberately defective in order to achieve effective mediator transfer to the electrodes. The pure Photosystem II (PS II) cores from spinach immobilize onto the electrodes very efficiently but fair badly in terms of photocurrent response (measured using duroquinone as the redox mediator). The cruder preparation of PS II known as BBY particles performs significantly better under the same experimental conditions and shows a photocurrent response of 20-35 nA (depending on preparation) per screen-printed electrode surface (12.5mm(2)). The data was corroborated using AFM, showing that in the case of BBY particles a defective biolayer is indeed formed, with grooves spanning the whole thickness of the layer enhancing the possibility of mass transfer to the electrodes and enabling biosensing. In comparison, the PS II core layer showed ultra-dense organization, with additional formation of aggregates on top of the single protein layer, thus blocking mediator access to the electrodes and/or binding sites. The defective monolayer biosensor with BBY particles was successfully applied for the detection of photosynthesis inhibitors, demonstrating that the inhibitor binding site remained accessible to both the inhibitor and the external redox mediator. Biosensing was demonstrated using picric acid and atrazine. The detection limits were 1.15 nM for atrazine and 157 nM for picric acid.
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Affiliation(s)
- Vijayender Bhalla
- Department of Physics, Concordia University, Montreal, Quebec, Canada.
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