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Lunardi VB, Cheng KC, Lin SP, Angkawijaya AE, Go AW, Soetaredjo FE, Ismadji S, Hsu HY, Hsieh CW, Santoso SP. Modification of cellulosic adsorbent via iron-based metal phenolic networks coating for efficient removal of chromium ion. JOURNAL OF HAZARDOUS MATERIALS 2024; 464:132973. [PMID: 37976845 DOI: 10.1016/j.jhazmat.2023.132973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/16/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023]
Abstract
Surface modification of durian rind cellulose (DCell) was done by utilizing the strong coordination effect of polyphenol-based metal phenolic networks (MPNs). MPNs from Fe(III)-tannic acid (FTN) and Fe(III)-gallic acid (FGN) were coated on DCell via a self-assembly reaction at pH 8, resulting in adsorbent composites of FTN@DCell and FGN@DCell for removal of Cr(VI). Batch adsorption experiments revealed that FTN coating resulted in an adsorbent composite with higher adsorption capacity than FGN coating, owing to the greater number of additional adsorption sites from phenolic hydroxyl groups of tannic acid. FTN@DCell exhibits an equilibrium adsorption capacity at 30°C of 110.9 mg/g for Cr(VI), significantly higher than FGN@DCell (73.63 mg/g); the adsorption capacity was increased at higher temperature (i.e., 155.8 and 116.8 mg/g at 50°C for FTN@DCell and FGN@DCell, respectively). Effects of pH, adsorbent dose, initial concentration, and coexisting ions on Cr(VI) removal were investigated. The kinetics fractal-based model Brouers-Sotolongo indicates the 1st and 2nd order reaction for Cr(VI) adsorption on FTN@DCell and FGN@DCell, respectively. The isotherm data can be described with a fractal-based model, which implies the heterogeneous nature of the adsorbent surface sites. The Cr(VI) adsorption via surface complexation with phenolic hydroxyl groups was confirmed by evaluating the functional groups shifting. FGN@DCell and FTN@DCell were found to have good reusability, maintaining over 50 % of their adsorption efficiency after four adsorption-desorption cycles. Environmental assessment with Arabidopsis thaliana demonstrated their potential in eliminating the Cr(VI) phytotoxic effect. Thus, this study has shown the efficient and economical conversion of durian waste into environmentally benign adsorbent for heavy metal treatment.
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Affiliation(s)
- Valentino Bervia Lunardi
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Surabaya 60114, East Java, Indonesia
| | - Kuan-Chen Cheng
- Institute of Biotechnology, National Taiwan University, 1 Roosevelt Rd., Section 4, Taipei 10617, Taiwan; Graduate Institute of Food Science and Technology, National Taiwan University, 1 Roosevelt Rd., Section 4, Taipei 10617, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, 91 Hsueh-Shih Rd., Taichung 40402, Taiwan; Department of Optometry, Asia University, 500, Lioufeng Rd., Wufeng, Taichung 41354, Taiwan
| | - Shin-Ping Lin
- School of Food Safety, Taipei Medical University, 250 Wu-Hsing Street, Taipei 11031, Taiwan; TMU Research Center for Digestive Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei 11031, Taiwan; Research Center of Biomedical Device, Taipei Medical University, 250 Wu-Hsing Street, Taipei 11031, Taiwan
| | | | - Alchris Woo Go
- Chemical Engineering Department, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Rd., Taipei 10607, Taiwan
| | - Felycia Edi Soetaredjo
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Surabaya 60114, East Java, Indonesia; Collaborative Research Center for Zero Waste and Sustainability, Jl. Kalijudan 37, Surabaya 60114, East Java, Indonesia
| | - Suryadi Ismadji
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Surabaya 60114, East Java, Indonesia
| | - Hsien-Yi Hsu
- School of Energy and Environment, Department of Materials Science and Engineering, City University of Hong Kong, Kowloon Tong 518057, Hong Kong, China; Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, Hong Kong, China
| | - Chang-Wei Hsieh
- Department of Food Science and Biotechnology, National Chung Hsing University, South Dist., Taichung City 40227, Taiwan; Department of Medical Research, China Medical University Hospital, North Dist., Taichung City 404333, Taiwan
| | - Shella Permatasari Santoso
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Surabaya 60114, East Java, Indonesia.
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Aharchaou I, Maul A, Pons MN, Pauly D, Poirot H, Flayac J, Rodius F, Rousselle P, Beuret M, Battaglia E, Vignati DAL. Effects and bioaccumulation of Cr(III), Cr(VI) and their mixture in the freshwater mussel Corbicula fluminea. CHEMOSPHERE 2022; 297:134090. [PMID: 35216982 DOI: 10.1016/j.chemosphere.2022.134090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/09/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
Chromium has two main oxidation states, Cr(III) and Cr(VI), that can occur simultaneously in natural waters. Current consensus holds that Cr(VI) is of high ecotoxicological concern, but regards Cr(III) as poorly bioavailable and relatively non-toxic. In this work, the effects and bioaccumulation of Cr(III), Cr(VI) and their mixture were studied using the freshwater clam Corbicula fluminea as a model organism. Mixture exposures were carried out using solutions isotopically enriched in 50Cr(III) or 53Cr(VI), allowing to quantify the contribution of each redox form to total Cr accumulation in the clams. Following exposure to individual redox forms, Cr(III) accumulated preferentially in the digestive glands and Cr(VI) in the gills of C. fluminea. In mixture exposures, both redox forms accumulated mainly in the gills; the concentration of Cr(III) in the digestive glands being much lowered compared with individual exposures. Both oxidation states affected the expression of biomarkers related to energy reserves, cellular damage and mitochondrial functioning, as well as the expression of mRNA for detoxification genes. The observed effects differed between gills and digestive glands. The present study suggests that Cr(III) is a bioavailable and biologically active elemental species deserving more consideration by the ecotoxicological community.
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Affiliation(s)
- Imad Aharchaou
- Université de Lorraine, CNRS, LIEC, F-57000, Metz, France
| | - Armand Maul
- Université de Lorraine, CNRS, LIEC, F-57000, Metz, France
| | | | - Danièle Pauly
- Université de Lorraine, CNRS, LIEC, F-57000, Metz, France; Pôle de Compétences en Biologie Environnementale, ANATELo, Université de Lorraine, F-57000, Metz, France
| | - Hélène Poirot
- Université de Lorraine, CNRS, LRGP, F-54000, Nancy, France
| | - Justine Flayac
- Université de Lorraine, CNRS, LIEC, F-57000, Metz, France; Pôle de Compétences en Biologie Environnementale, ANATELo, Université de Lorraine, F-57000, Metz, France
| | | | - Philippe Rousselle
- Université de Lorraine, CNRS, LIEC, F-57000, Metz, France; Pôle de Compétences en Chimie Analytique Environnementale, ANATELo, Université de Lorraine, F-57000 Metz, France
| | - Maximilien Beuret
- Université de Lorraine, CNRS, LIEC, F-57000, Metz, France; Pôle de Compétences en Chimie Analytique Environnementale, ANATELo, Université de Lorraine, F-57000 Metz, France
| | - Eric Battaglia
- Université de Lorraine, CNRS, LIEC, F-57000, Metz, France
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Chen L, Liu W, Wu Y, Li J, Ma Y. Identification and quantification of the combined phytotoxicity of one element with various valences: Cr(III) and Cr(VI) for barley root elongation as an example. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128430. [PMID: 35149490 DOI: 10.1016/j.jhazmat.2022.128430] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/29/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
There is uncertainty in quantifying the toxic effects of total chromium (Cr) in the environment by modeling the toxicity of individual Cr(III) or Cr(VI). In the present study, the effects of Cr(III) and Cr(VI) on barley root elongation were investigated in a hydroponic system where Cr(III) and Cr(VI) combination dose-response experiments under monotoxicity concentration, single-dose addition, and fixed concentration ratios were designed to identify and quantify their combined phytotoxicity of one element with various valences. The results show that the calculated mixed toxicity unit values for 50% inhibition (TUmix50) ranged from 1.06 to 1.45, indicating the weak antagonism effects of Cr(III) and Cr(VI) on barley root toxicity. Also, the single-dose group experiment has proved that the EC50 of Cr(VI) was increased from 71.2 μM to 119.9 μM with Cr(III) addition, which suggested that Cr(III) has antagonism on the toxicity of Cr(VI). While EC50 of Cr(III) was not affected by Cr(VI) addition. After introducing the expansion coefficient of Cr(III) on Cr(VI) toxicity, both the extended concentration addition model (e-CA) based on the log-logistic and Weibull equations and the extended independent action model (e-IA) could more accurately predict the barley root elongation under Cr(III) and Cr(VI) interaction. The e-CA model based on the Weibull equation had almost the best correlation coefficient (R2) and lowest root mean square error (RMSE) between the measured and predicted values. Finally, the combined toxicity and antagonism of the same element with co-existing different valences simultaneously were successfully and firstly identified and quantified in the present study.
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Affiliation(s)
- Linheng Chen
- Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality, Macao Environmental Research Institute, Macau University of Science and Technology, Macao 999078, China; National Observation and Research Station of Coastal Ecological Environments in Macao, Macau University of Science and Technology, Macao 999078, China
| | - Weixi Liu
- Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality, Macao Environmental Research Institute, Macau University of Science and Technology, Macao 999078, China; National Observation and Research Station of Coastal Ecological Environments in Macao, Macau University of Science and Technology, Macao 999078, China
| | - Yang Wu
- Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality, Macao Environmental Research Institute, Macau University of Science and Technology, Macao 999078, China; National Observation and Research Station of Coastal Ecological Environments in Macao, Macau University of Science and Technology, Macao 999078, China.
| | - Jumei Li
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yibing Ma
- Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality, Macao Environmental Research Institute, Macau University of Science and Technology, Macao 999078, China; National Observation and Research Station of Coastal Ecological Environments in Macao, Macau University of Science and Technology, Macao 999078, China
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Nasri Z, Memari S, Striesow J, Weltmann KD, von Woedtke T, Wende K. Application of scanning electrochemical microscopy for topography imaging of supported lipid bilayers. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:1077-1082. [PMID: 35201253 DOI: 10.1039/d2ay00154c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Oxidative stress in cellular environments may cause lipid oxidation and membrane degradation. Therefore, studying the degree of lipid membrane morphological changes by reactive oxygen and nitrogen species will be informative in oxidative stress-based therapies. This study introduces the possibility of using scanning electrochemical microscopy as a powerful imaging technique to follow the topographical changes of a solid-supported lipid bilayer model induced by reactive species produced from gas plasma. The introduced strategy is not limited to investigating the effect of reactive species on the lipid bilayer but could be extended to understand the morphological changes of the lipid bilayer due to the action of membrane proteins or antimicrobial peptides.
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Affiliation(s)
- Zahra Nasri
- Center for Innovation Competence (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany.
| | - Seyedali Memari
- Center for Innovation Competence (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany.
- Department of Chemistry, University of Hamburg, Hamburg, Germany
| | - Johanna Striesow
- Center for Innovation Competence (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany.
| | - Klaus-Dieter Weltmann
- Center for Innovation Competence (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany.
| | - Thomas von Woedtke
- Center for Innovation Competence (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany.
- Institute for Hygiene and Environmental Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Kristian Wende
- Center for Innovation Competence (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany.
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Wu T, Xiong Q, Song R, Wang Q, Zhang F, He P. In situ monitoring of the effect of Cu 2+ on the membrane permeability of a single living cell with a dual-electrode tip of a scanning electrochemical microscope. Analyst 2021; 146:7257-7264. [PMID: 34734932 DOI: 10.1039/d1an01656c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Here, an Au-Cu dual-electrode tip was designed to monitor the effect of Cu2+ on the membrane permeability of a single living cell in situ using scanning electrochemical microscopy. The probe approach curves (PACs) were obtained using potassium ferricyanide as a redox mediator. Meanwhile, according to the simulation, theoretical PACs could be acquired. Thus, the cell membrane permeability coefficient (Pm) values were obtained by overlapping the experimental PACs with the theoretical values. Cu2+ was directly generated by electrolyzing the Cu electrode of the dual-electrode tip to investigate its effect on the cell membrane permeability in situ. This work has potential value to improve the understanding of the mechanism of acute heavy metal damage on the cell membrane and will also help clarify the role of heavy metal ions in physiological or pathological processes.
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Affiliation(s)
- Tao Wu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P.R. China.
| | - Qiang Xiong
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P.R. China.
| | - Ranran Song
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P.R. China.
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P.R. China.
| | - Fan Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P.R. China.
| | - Pingang He
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P.R. China.
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Chrit FE, Raj A, Young KM, Stone NE, Shankles PG, Lokireddy K, Flowers C, Waller EK, Alexeev A, Sulchek T. Microfluidic Platform to Transduce Cell Viability to Distinct Flow Pathways for High-Accuracy Sensing. ACS Sens 2021; 6:3789-3799. [PMID: 34546721 DOI: 10.1021/acssensors.1c01770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mechanical properties of cells such as stiffness can act as biomarkers to sort or detect cell functional properties such as viability. In this study, we report the use of a microfluidic device as a high-sensitivity sensor that transduces cell biomechanics to cell separation to accurately detect viability. Cell populations are flowed and deflected at a number of skew ridges such that deflection per ridge, cell-ridge interaction time, and cell size can all be used as sensor inputs to accurately determine the cell state. The angle of the ridges was evaluated to optimize the differences in cell translation between viable and nonviable cells while allowing continuous flow. In the first mode of operation, we flowed viable and nonviable cells through the device and conducted a sensitivity analysis by recording the cell's total deflection as a binary classifier that differentiates viable from nonviable cells. The performance of the sensor was assessed using an area under the curve (AUC) analysis to be 0.97. By including additional sensor inputs in the second mode of operation, we conducted a principal component analysis (PCA) to further improve the identification of the cell state by clustering populations with little overlap between viable and nonviable cells. We therefore found that microfluidic separation devices can be used to efficiently sort cells and accurately sense viability in a label-free manner.
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Affiliation(s)
- Fatima Ezahra Chrit
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Abhishek Raj
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Katherine M. Young
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia 30332, United States
| | - Nicholas E. Stone
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Peter G. Shankles
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kesiharjun Lokireddy
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Christopher Flowers
- Winship Cancer Institute, Emory School of Medicine, 1365 Clifton NE Road, Atlanta, Georgia 30322, United States
| | - Edmund K. Waller
- Winship Cancer Institute, Emory School of Medicine, 1365 Clifton NE Road, Atlanta, Georgia 30322, United States
| | - Alexander Alexeev
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Todd Sulchek
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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7
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Zhang B, Pan N, Fan X, Lu L, Wang X. Real-time effects of Cd(II) on the cellular membrane permeability. Analyst 2021; 146:5973-5979. [PMID: 34499067 DOI: 10.1039/d1an00827g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Cell membrane permeability is one of the main indicators of cytotoxicity and related to many critical biological pathways. Here, we determined the Cd2+-induced membrane permeability of human MCF-7 cells using ferrocene methanol molecular probes based on scanning electrochemical microscopy (SECM). The cell height and topography were examined with an impermeable Ru(NH3)6Cl3 probe. The membrane permeability exhibited no significant changes when the Cd2+ incubation time was less than 2 h and its concentration was less than 40 μM. The permeability increased when the Cd2+ concentration was greater than 60 μM, or when the incubation time was longer than 3 h. From the combined 3-(4,5-di-methylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and cytoskeleton imaging experiments, it was found that the changes occurred because the cells exhibited a defensive mode and their membranes contracted when treated with a low concentration of Cd2+ for a short time. However, the cell membranes were irreversibly damaged when the cytoskeleton structures were destroyed, and the cell activities decreased at high concentrations over long periods. Interestingly, through the comparison with an x-scan study, it was found that DPV technology shows a higher performance in the detection of changes in the membrane permeability. Using a combination of cytoskeleton fluorescence imaging and cell-viability tests, the effect of the cadmium metal on the cell membrane permeability can be explored deeper and more comprehensively. This study provides a new idea for exploring the changes in the cell membrane permeability and may be helpful for rapid evaluation of cytotoxicity.
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Affiliation(s)
- Biao Zhang
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China.
| | - Na Pan
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China.
| | - Xiaoyin Fan
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China.
| | - Liping Lu
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China. .,Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
| | - Xiayan Wang
- Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
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Khan J, Sadia M, Shah SWA, Naz R, Ali F. 2,6-bis(E)-4-methylbenzylidine)-cyclohexan-1-one as a Fluorescent-on Sensor for Ultra Selective Detection of Chromium Ion in Aqueous Media. J Fluoresc 2021; 31:1759-1770. [PMID: 34495468 DOI: 10.1007/s10895-021-02806-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/11/2021] [Indexed: 01/16/2023]
Abstract
The ligand 2,6-bis(E)-4-methylbenzylidine)-cyclohexan-1-one sensor has been synthesized as a fluorescence-on sensor/probe for the trace level detection of chromium III ion. The synthesized ligand was characterized by FTIR, 1H-NMR spectroscopy, and fluorimetery. The sensor exhibited an ultra-selective response to chromium among the tested heavy metal ions. Different parameters were optimized like pH, effect of concentration of sensor C, metal ion and contact time. The binding stoichiometry of C:Cr3+ was calculated to be 2:1 (Job's plot) with a significantly low detection limit of 2.3 × 10- 9 M. Sensor C were practically employed for detection of chromium in spiked water samples.
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Affiliation(s)
- Jehangir Khan
- Department of Chemistry, University of Malakand, Lower Dir, ChakdaraKhyber Pakhtunkhwa, Pakistan
| | - Maria Sadia
- Department of Chemistry, University of Malakand, Lower Dir, ChakdaraKhyber Pakhtunkhwa, Pakistan.
| | - Syed Wadood Ali Shah
- Department of Pharmacy, University of Malakand, Lower Dir, ChakdaraKhyber Pakhtunkhwa, Pakistan
| | - Robina Naz
- Department of Chemistry, University of Malakand, Lower Dir, ChakdaraKhyber Pakhtunkhwa, Pakistan
| | - Faiz Ali
- Department of Chemistry, University of Malakand, Lower Dir, ChakdaraKhyber Pakhtunkhwa, Pakistan
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In situ potentiometric SECM monitoring of the extracellular pH changes under electrical stimulation using a dual-microelectrode tip. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Valiūnienė A, Gabriunaite I, Poderyte M, Ramanavicius A. Electroporation of a hybrid bilayer membrane by scanning electrochemical microscope. Bioelectrochemistry 2020; 136:107617. [PMID: 32736329 DOI: 10.1016/j.bioelechem.2020.107617] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 07/17/2020] [Accepted: 07/17/2020] [Indexed: 10/23/2022]
Abstract
A novel method, suitable for targeted electroporation of hybrid bilayer membranes (hBLMs) by scanning electrochemical microscope (SECM) is introduced by this work. A redox-probe-free system was applied for (i) SECM-based electroporation of a hBLM and for (ii) SECM-based visualization of pores formed by SECM-based electroporation in the hBLM. The hBLM was formed on a glass substrate modified by fluorine-doped tin oxide, and the structure (glass/FTO/hBLM) was used for further investigations. A specific 'constant-current region' at 1-30 µm distances between the UME and the hBLM surface was observed in the approach curves, which were registered while a Pt-based ultramicroelectrode (UME) was approaching the glass/FTO/hBLM surface. This 'constant-current region' was used as the characteristic feature for characterisation of the hBLM, and by assessment of the approach curves it was possible to distinguish whether an area of the hBLM was electroporated. SECM-based electroporation of the hBLM was performed by using increased potential difference between the reference electrode and the UME. Depending on the duration of the applied potential-pulse and on the distance between the UME and the hBLM surface, irreversible or reversible electroporation of the hBLM was achieved. The data shows that SECM can be successfully applied for both electroporation and characterisation of the hBLM.
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Affiliation(s)
- Aušra Valiūnienė
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, LT-03225 Vilnius, Lithuania.
| | - Inga Gabriunaite
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, LT-03225 Vilnius, Lithuania
| | - Margarita Poderyte
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, LT-03225 Vilnius, Lithuania
| | - Arunas Ramanavicius
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, LT-03225 Vilnius, Lithuania; Laboratory of Nanotechnology, State Research Institute Centre of Physical Sciences and Technology, Sauletekio ave. 3, LT-10257 Vilnius, Lithuania
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