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Wang C, Shu T, Lang J, Zhang Y, Yao Q, Guo S, Wang S. Rapid real-time monitoring of NO released from living cells using multi-walled carbon nanotube-7,7,8,8-tetracyanoquinonedimethyl-polylysine sensors. Talanta 2023; 259:124566. [PMID: 37084605 DOI: 10.1016/j.talanta.2023.124566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/10/2023] [Accepted: 04/15/2023] [Indexed: 04/23/2023]
Abstract
Nitric oxide (NO) is an important but short-lived signaling molecule that is released from living cells. Real-time monitoring of NO release is useful for understanding normal cellular physiology and pathology. Herein, a convenient and efficient NO sensor was developed using multiwalled carbon nanotubes (MWCNTs)-7,7,8,8-tetracyanoquinodimethan (TCNQ)-polylysine (PLL) modified screen-printed electrode (SPE). The construction of the sensor (MWCNTs/TCNQ/PLL/SPE) was based on the synergic effect of the good conductivity of TCNQ and the high surface area of MWCNTs. The introduction of the cell-adhesive molecule PLL significantly enhanced the cytocompatibility, resulting in excellent cell attachment and growth. The resulting MWCNTs/TCNQ/PLL/SPE was successfully used for the real-time detection of NO released from living human umbilical vein endothelial cells (HUVECs) cultured on it. The MWCNTs/TCNQ/PLL/SPE was further used to detect NO release from oxidative-injured HUVECs with and without resveratrol to also preliminarily assess the effect of resveratrol against oxidative damage. The sensor developed in this study showed good performance for the real-time detection of NO released by HUVECs under different conditions and has potential applications in the diagnosis of biological processes and the screening of drug treatment effects.
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Affiliation(s)
- Caixia Wang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China
| | - Ting Shu
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China
| | - Jinrong Lang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China
| | - Youzhi Zhang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China
| | - Qing Yao
- Hubei Key Laboratory of Diabetes and Angiopathy, Medicine Research Institute, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China
| | - Shuang Guo
- Hubei Key Laboratory of Diabetes and Angiopathy, Medicine Research Institute, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China
| | - Shi Wang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning, 437100, PR China.
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Hall JR, Taylor JB, Bradshaw TM, Schoenfisch MH. Planar carbon electrodes for real-time quantification of hydrogen sulfide release from cells. SENSORS & DIAGNOSTICS 2023; 2:203-211. [PMID: 36741248 PMCID: PMC9850357 DOI: 10.1039/d2sd00179a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/01/2022] [Indexed: 12/05/2022]
Abstract
A planar electrode system was developed to permit the real-time, selective detection of hydrogen sulfide (H2S) from stimulated cells. Planar carbon electrodes were produced via stencil printing carbon ink through a laser cut vinyl mask. Electrodes were preconditioned using a constant potential amperometry methodology to prevent sensor drift resulting from elemental sulfur adsorption. Modification with a bilaminar coating (electropolymerized ortho-phenylenediamine and a fluorinated xerogel) facilitated high selectivity to H2S. To demonstrate the biological application of this planar sensor system, H2S released from 17β-estradiol-stimulated human umbilical vein endothelial cells (HUVECs) was quantified in situ in real-time. Stimulated HUVECs released sustained H2S levels for hours before returning to baseline. Cellular viability assays demonstrated negligible cell cytotoxicity at the electrochemical potentials required for analysis.
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Affiliation(s)
- Jackson R. Hall
- Department of Chemistry, The University of North Carolina at Chapel HillChapel HillNorth Carolina 27599USA
| | - James B. Taylor
- Department of Chemistry, The University of North Carolina at Chapel HillChapel HillNorth Carolina 27599USA
| | - Taron M. Bradshaw
- Department of Chemistry, The University of North Carolina at Chapel HillChapel HillNorth Carolina 27599USA
| | - Mark H. Schoenfisch
- Department of Chemistry, The University of North Carolina at Chapel HillChapel HillNorth Carolina 27599USA,Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of PharmacyChapel HillNC 27599USA
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Electrical Stimulation and Cellular Behaviors in Electric Field in Biomedical Research. MATERIALS 2021; 15:ma15010165. [PMID: 35009311 PMCID: PMC8746014 DOI: 10.3390/ma15010165] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/15/2021] [Accepted: 12/20/2021] [Indexed: 12/20/2022]
Abstract
Research on the cellular response to electrical stimulation (ES) and its mechanisms focusing on potential clinic applications has been quietly intensified recently. However, the unconventional nature of this methodology has fertilized a great variety of techniques that make the interpretation and comparison of experimental outcomes complicated. This work reviews more than a hundred publications identified mostly from Medline, categorizes the techniques, and comments on their merits and weaknesses. Electrode-based ES, conductive substrate-mediated ES, and noninvasive stimulation are the three principal categories used in biomedical research and clinic. ES has been found to enhance cell proliferation, growth, migration, and stem cell differentiation, showing an important potential in manipulating cellular activities in both normal and pathological conditions. However, inappropriate parameters or setup can have negative effects. The complexity of the delivered electric signals depends on how they are generated and in what form. It is also difficult to equate one set of parameters with another. Mechanistic studies are rare and badly needed. Even so, ES in combination with advanced materials and nanotechnology is developing a strong footing in biomedical research and regenerative medicine.
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Kuzovlev AN, Evseev AK, Goroncharovskaya IV, Shabanov AK, Petrikov SS. Optically transparent electrodes to study living cells: A mini review. Biotechnol Bioeng 2021; 118:2393-2400. [PMID: 33830518 DOI: 10.1002/bit.27782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 03/11/2021] [Accepted: 03/30/2021] [Indexed: 11/07/2022]
Abstract
The use of electrochemical methods to study living systems, including cells, has been of interest to researchers for a long time. Thus, controlling the polarization of the electrode contacting living cells, one can influence, for example, their proliferation or the synthesis of specific proteins. Moreover, the electrochemical approach formed the basis of the biocompatibility improvement of the materials contacting with body tissues that use in carbon hemosorbents and implants development. It became possible to reach a fundamentally new level in the study of cell activity with the introduction of optically transparent electrodes in this area. The advantage of the using of optically transparent electrodes is the possibility of simultaneous analysis of living cells by electrochemical and microscopic methods. The use of such materials allowed approaching to the study of the influence of the electrode potential on adhesion activity and morphology of the different cell types (HeLa cells, endothelial cell, etc.) more detailed. There are a negligible number of publications in this area despite the advantages of the usage of optically transparent electrodes to study living cells. This mini-review is devoted to some aspects of the interaction of living cells with conductive materials and current advances in the use of optically transparent electrodes for the study of living cells, as well as the prospects for their use in cellular technologies.
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Affiliation(s)
- Artem N Kuzovlev
- Laboratory of Clinical Pathophysiology of Critical States, Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow, Russia
| | - Anatoly K Evseev
- Intensive Care Unit, N. V. Sklifosovsky Research Institute for Emergency Medicine, Moscow, Russia
| | - Irina V Goroncharovskaya
- Intensive Care Unit, N. V. Sklifosovsky Research Institute for Emergency Medicine, Moscow, Russia
| | - Aslan K Shabanov
- Laboratory of Clinical Pathophysiology of Critical States, Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow, Russia.,Intensive Care Unit, N. V. Sklifosovsky Research Institute for Emergency Medicine, Moscow, Russia
| | - Sergey S Petrikov
- Intensive Care Unit, N. V. Sklifosovsky Research Institute for Emergency Medicine, Moscow, Russia
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Brown MD, Schoenfisch MH. Electrochemical Nitric Oxide Sensors: Principles of Design and Characterization. Chem Rev 2019; 119:11551-11575. [DOI: 10.1021/acs.chemrev.8b00797] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Micah D. Brown
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Mark H. Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
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Tsivadze AY, Khubutiya MS, Evseev AK, Goroncharovskaya IV, Borovkova NV, Shapiro AI, Batishchev OV, Goldin MM. Electrochemical activity and morphology of human erythrocytes at optically transparent ITO electrode. DOKLADY PHYSICAL CHEMISTRY 2017. [DOI: 10.1134/s0012501617110021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Im DJ, Noh J, Yi NW, Park J, Kang IS. Influences of electric field on living cells in a charged water-in-oil droplet under electrophoretic actuation. BIOMICROFLUIDICS 2011; 5:44112-4411210. [PMID: 22662063 PMCID: PMC3364810 DOI: 10.1063/1.3665222] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 11/11/2011] [Indexed: 05/11/2023]
Abstract
We experimentally investigate the effects of high electric field on living cells inside a charged droplet under electrophoretic actuation. When an aqueous droplet suspended in a dielectric liquid contacts with electrified electrode, the droplet acquires charge. This charged droplet undergoes electrophoretic motion under strong electric field (1-3 kV/cm), which can be used as a droplet manipulation method in biomicrofluidic applications. However, because strong electric field and use of dielectric oil can be a harmful environment for living cells, the biological feasibilities have been tested. Trypan blue test and cell growth test have been performed to check the viability and proliferation of cells in a droplet under various electric field strengths and actuation times. We have not observed any noticeable influence of electric field and silicone oil on the viability and proliferation of cells, which indicates that electrophoresis could be safely used as a manipulation method for a droplet containing living biological system.
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Sensitivity to electrical stimulation of human immunodeficiency virus type 1 and MAGIC-5 cells. AMB Express 2011; 1:23. [PMID: 21906386 PMCID: PMC3222307 DOI: 10.1186/2191-0855-1-23] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 08/08/2011] [Indexed: 11/15/2022] Open
Abstract
To determine the sensitivities to low electrical potential of human immunodeficiency virus type 1 (HIV-1) and its target cells, HIV-1 and MAGIC-5 cells were directly stimulated with a constant direct current potential of 1.0 V (vs. Ag/AgCl). HIV-1 was incubated for 3 h at 37°C on a poly-L-lysine-coated indium-tin oxide electrode, and then stimulated by an electrical potential. MAGIC-5 cells were seeded onto the electrically stimulated HIV-1 and cultured for 3 days at 37°C. HIV-1-infected cells were measured by multinuclear activation via a galactosidase indicator assay. MAGIC-5 cells were also stimulated by an electrical potential of 1.0 V; cell damage, proliferation and apoptosis were evaluated by trypan blue staining, cell counting and in situ apoptosis detection, respectively. HIV-1 was found to be damaged to a greater extent by electrical stimulation than the cells. In particular, after application of a 1.0-V potential for 3 min, HIV-1LAI and HIV-1KMT infection were inhibited by about 90%, but changes in cell damage, proliferation and apoptosis were virtually undetectable. These results suggested that HIV-1 is significantly more susceptible to low electrical potential than cells. This finding could form the basis of a novel therapeutic strategy against HIV-1 infection.
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Ghasemi-Mobarakeh L, Prabhakaran MP, Morshed M, Nasr-Esfahani MH, Baharvand H, Kiani S, Al-Deyab SS, Ramakrishna S. Application of conductive polymers, scaffolds and electrical stimulation for nerve tissue engineering. J Tissue Eng Regen Med 2011; 5:e17-35. [PMID: 21413155 DOI: 10.1002/term.383] [Citation(s) in RCA: 350] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Accepted: 10/12/2010] [Indexed: 12/17/2022]
Abstract
Among the numerous attempts to integrate tissue engineering concepts into strategies to repair nearly all parts of the body, neuronal repair stands out. This is partially due to the complexity of the nervous anatomical system, its functioning and the inefficiency of conventional repair approaches, which are based on single components of either biomaterials or cells alone. Electrical stimulation has been shown to enhance the nerve regeneration process and this consequently makes the use of electrically conductive polymers very attractive for the construction of scaffolds for nerve tissue engineering. In this review, by taking into consideration the electrical properties of nerve cells and the effect of electrical stimulation on nerve cells, we discuss the most commonly utilized conductive polymers, polypyrrole (PPy) and polyaniline (PANI), along with their design and modifications, thus making them suitable scaffolds for nerve tissue engineering. Other electrospun, composite, conductive scaffolds, such as PANI/gelatin and PPy/poly(ε-caprolactone), with or without electrical stimulation, are also discussed. Different procedures of electrical stimulation which have been used in tissue engineering, with examples on their specific applications in tissue engineering, are also discussed.
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The regulation of cell functions electrically using biodegradable polypyrrole–polylactide conductors. Biomaterials 2008; 29:3792-8. [DOI: 10.1016/j.biomaterials.2008.06.010] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2008] [Accepted: 06/11/2008] [Indexed: 11/24/2022]
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11
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Development and application of a stable HeLa cell line capable of site-specific transgenesis using the Cre-lox system: establishment and application of a stable TNFRI knockdown cell line to cytotoxicity assay. Toxicol In Vitro 2008; 22:1077-87. [PMID: 18356016 DOI: 10.1016/j.tiv.2008.01.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Revised: 09/03/2007] [Accepted: 01/22/2008] [Indexed: 10/22/2022]
Abstract
Mammalian cell models for gene knock-out/knock-in experiments are important for functional analysis of genes and have a potential of useful tool for toxicological studies. However, uncontrolled insertion of transgenes has raised significant concerns over unwanted side effects. To address this issue, we established a stable HeLa55 cell line capable of site-specific transgenesis by means of Cre-mediated cassette exchange at a site on the long arm of human chromosome 9 containing no constitutive transcripts. We applied HeLa55 to transgenesis of the green fluorescent protein (GFP) gene based on recombinase-mediated cassette exchange. The transformants stably expressed GFP transgenes, even after cryopreservation, without compromising physiological properties. We produced an RNA interference (RNAi)-inducible knockdown stable cell line against human tumor necrosis factor (TNF) receptor I, and one cloned stable cell line (TNFRIKD cells) exhibited long-term gene silencing with significant reduction (ca. 85%) and markedly resisted cytotoxicity induced by TNFalpha. Furthermore, xenobiotics were exposed to stable TNFRIKD cells and different cytotoxicity was exhibited based on various toxicological properties. Thus, we showed the feasibility of RNAi-based stable knockdown cells for xenobiotics-induced cytotoxicity, and HeLa55 has wide application for the generation of stable knock-in and knock-down cells mediated by RNAi.
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MIE M, MANABE M, KOBATAKE E. Combining Electrical Stimulation and Cisplatin Treatment Increases Caspase Activity. ELECTROCHEMISTRY 2008. [DOI: 10.5796/electrochemistry.76.529] [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
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TOMINAGA M, NAGAISHI S, KUMAGAI E, HARADA S, TANIGUCHI I. Effects of the Expansion Time of Alternating Potential Loading and Temperature on Cell Membrane Damage in HeLa Cells Cultured on an Electrode Surface. ELECTROCHEMISTRY 2008. [DOI: 10.5796/electrochemistry.76.538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Kumagai E, Tominaga M, Nagaishi S, Harada S. Effect of electrical stimulation on human immunodeficiency virus type-1 infectivity. Appl Microbiol Biotechnol 2007; 77:947-53. [PMID: 17940763 DOI: 10.1007/s00253-007-1214-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2007] [Revised: 09/12/2007] [Accepted: 09/16/2007] [Indexed: 10/22/2022]
Abstract
We examined the effects of electrical stimulation on HIV-1-adsorbed MAGIC-5 (MAGIC-5/HIV-1) cells and unadsorbed MAGIC-5 (MAGIC-5) cells. When MAGIC-5 cells were stimulated by a constant d.c. potential of 1.0 V (vs Ag/Agcl) immediately after HIV-1(LAI) infection, infectivity was more affected by electrical stimulation than by cell membrane damage. In particular, after application of potential at 1.0 V for 5 min, about 1% of the membranes of the MAGIC-5/HIV-1(LAI) cells were damaged, but the infectivities of both HIV-1(LAI) and HIV-1(NL43-luc) cells decreased about 37 and 44%, respectively (p < 0.05). After application of potential at 1.0 V for 5 min, the mean fluorescence intensities (MFIs) of highly reactive oxygen species (hROS) and nitric oxide (NO) in MAGIC-5/HIV-1(NL43-Luc) cells were significantly increased compared with that of unstimulated MAGIC-5/HIV-1(NL43-Luc) cells (p < 0.01). However, the MFIs of hROS and NO in MAGIC-5 cells were also increased, to the same level, by electrical stimulation for 5 min. These results suggest that HIV-1 adsorbed onto or invading cells is damaged by direct or indirect effects of electrical stimulation, resulting in a decrease in HIV-1 infectivity. It is also suggested that hROS and NO induced by electrical stimulation are important factors for inhibiting HIV-1 infection.
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Affiliation(s)
- Etsuko Kumagai
- Department of Health Science, Kumamoto University School of Medicine, 4-24-1 Kuhonji, Kumamoto 862-0976, Japan.
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Tominaga M, Nagaishi S, Kirihara M, Kumagai E, Harada S, Taniguchi I. Frequency change-induced alternative potential waveform dependence of membrane damage to cells cultured on an electrode surface. J Biotechnol 2007; 129:498-501. [PMID: 17368608 DOI: 10.1016/j.jbiotec.2007.01.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2006] [Accepted: 01/24/2007] [Indexed: 10/23/2022]
Abstract
In the present study, alternative potential stimulation with rectangular pulse, sine and triangular waveforms at 10 and 100Hz was applied to cells cultured on an ITO electrode. As a result, we found that the alternating potential waveform dependence induced by the frequency on membrane damage of cells cultured on an electrode surface. The cell membrane damage was promoted by a rectangular pulse wave in comparison with sine and triangular waves, when alternating electrical potentials of 0 to +1.0V at 100Hz were loaded. In contrast, this waveform dependence was not observed when the frequency was 10Hz. Furthermore, it was found that cell membrane damage was induced at positive potentials more than +0.8V under the present experimental conditions.
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Affiliation(s)
- Masato Tominaga
- Graduate School of Science and Technology, Kumamoto University, 2-39-1, Kumamoto 860-8555, Japan.
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Manabe M, Mie M, Yanagida Y, Aizawa M, Kobatake E. Combined effect of electrical stimulation and cisplatin in HeLa cell death. Biotechnol Bioeng 2004; 86:661-6. [PMID: 15137077 DOI: 10.1002/bit.20110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The combined effect of electrical stimulation and cisplatin administration on HeLa cells was investigated. The combination of electric potentials (-0.5 V to 0.5 V) with 10-Hz frequency and 1000 ng/mL cisplatin decreased cancer cell viability by 32% and was more effective than either treatment given alone. Combined treatment with cisplatin and electrical stimulation also increased the number of apoptotic cells. It is shown that the efficacy of cisplatin was enhanced in electrically stimulated HeLa cells, and the addition of electrical stimulation amplified the chemotherapeutic effect of cisplatin in cervical cancer cells.
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Affiliation(s)
- Masafumi Manabe
- Department of Biological Information, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Midori-ku, Yokohama 226-8501, Japan
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Affiliation(s)
- Masuo AIZAWA
- Department of Biological Information, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
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AIZAWA M, KOYAMA S, KIMURA K, HARUYAMA T, YANAGIDA Y, KOBATAKE E. Electrically Stimulated Modulation of Cellular Function in Proliferation, Differentiation, and Gene Expression. ELECTROCHEMISTRY 1999. [DOI: 10.5796/electrochemistry.67.118] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Masuo AIZAWA
- Department of Bioengineering, Tokyo Institute of Technology
| | | | - Keisei KIMURA
- Department of Bioengineering, Tokyo Institute of Technology
| | | | | | - Eiry KOBATAKE
- Department of Bioengineering, Tokyo Institute of Technology
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20
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Aizawa M. Molecular interfacing for protein molecular devices and neurodevices. ACTA ACUST UNITED AC 1994. [DOI: 10.1109/51.265784] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Electrically promoted protein production by mammalian cells cultured on the electrode surface. Biotechnol Bioeng 1992; 39:27-32. [DOI: 10.1002/bit.260390106] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kojima J, Shinohara H, Ikariyama Y, Aizawa M, Nagaike K, Morioka S. Electrically controlled proliferation of human carcinoma cells cultured on the surface of an electrode. J Biotechnol 1991; 18:129-39. [PMID: 1367098 DOI: 10.1016/0168-1656(91)90241-m] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Human carcinoma cells, MKN45, were cultured on the surface of a metal-coated plastic plate electrode the potential of which was controlled. The proliferation rate and cell morphology were altered depending on the applied potential. Cell proliferation was halted in the potential range above 0.4 V vs. Ag/AgCl, although cells started to proliferate again when the applied potential was shifted from 0.4 V to 0.1 V vs. Ag/AgCl. Fluorescence probe studies indicated that the fluidity of plasma membrane decreased in association with halting of cell proliferation. These results suggest that electrical stimulation causes cells to temporarily halt proliferation, and that cell proliferation was reversibly controlled by electrode potential. The mechanism is interpreted in relation to the change of plasma membrane structure represented by membrane fluidity.
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Affiliation(s)
- J Kojima
- Department of Bioengineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, Japan
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