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Holandino C, Teixeira CAA, de Oliveira FAG, Barbosa GM, Siqueira CM, Messeder DJ, de Aguiar FS, da Veiga VF, Girard-Dias W, Miranda K, Galina A, Capella MAM, Morales MM. Direct electric current treatment modifies mitochondrial function and lipid body content in the A549 cancer cell line. Bioelectrochemistry 2016; 111:83-92. [PMID: 27243447 DOI: 10.1016/j.bioelechem.2016.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/09/2016] [Accepted: 05/09/2016] [Indexed: 02/04/2023]
Abstract
Electrochemical therapy (EChT) entails treatment of solid tumors with direct electric current (DC). This work evaluated the specific effects of anodic flow generated by DC on biochemical and metabolic features of the A549 human lung cancer cell line. Apoptosis was evaluated on the basis of caspase-3 activity and mitochondrial transmembrane potential dissipation. Cell morphology was analyzed using transmission electron microscopy, and lipid droplets were studied through morphometric analysis and X-ray qualitative elemental microanalysis. High-resolution respirometry was used to assess mitochondrial respiratory parameters. Results indicated A549 viability decreased in a dose-dependent manner with a prominent drop between 18 and 24h after treatment (p<0.001), together with a two-fold increase in caspase-3 activity. AF-treatment induced a significantly increase (p<0.01) in the cell number with disrupted mitochondrial transmembrane potential. Furthermore, treated cells demonstrated important ultrastructural mitochondria damage and a three-fold increase in the cytoplasmic lipid bodies' number, quantified by morphometrical analyses. Conversely, 24h after treatment, the cells presented a two-fold increase of residual oxygen consumption, accounting for 45.3% of basal oxygen consumption. These results show remarkable alterations promoted by anodic flow on human lung cancer cells which are possibly involved with the antitumoral effects of EChT.
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Affiliation(s)
- Carla Holandino
- Laboratory of Multidisciplinary Pharmaceutical Sciences, College of Pharmacy, Center of Health Sciences (CCS), Federal University do Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Cesar Augusto Antunes Teixeira
- Laboratory of Multidisciplinary Pharmaceutical Sciences, College of Pharmacy, Center of Health Sciences (CCS), Federal University do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Felipe Alves Gomes de Oliveira
- Laboratory of Multidisciplinary Pharmaceutical Sciences, College of Pharmacy, Center of Health Sciences (CCS), Federal University do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gleyce Moreno Barbosa
- Laboratory of Multidisciplinary Pharmaceutical Sciences, College of Pharmacy, Center of Health Sciences (CCS), Federal University do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Camila Monteiro Siqueira
- Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Douglas Jardim Messeder
- Laboratory of Bioenergetics and Mitochondrial Physiology, Institute of Medical Biochemistry, CCS, Federal University do Rio de Janeiro, Brazil
| | - Fernanda Silva de Aguiar
- Laboratory of Multidisciplinary Pharmaceutical Sciences, College of Pharmacy, Center of Health Sciences (CCS), Federal University do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Venicio Feo da Veiga
- Laboratory of Electron Microscopy, Institute of Microbiology Prof. Paulo de Góes (IMPPG), CCS, UFRJ, Rio de Janeiro, Brazil
| | - Wendell Girard-Dias
- Laboratory of Cellular Ultrastructure Hertha Meyer, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Kildare Miranda
- Laboratory of Cellular Ultrastructure Hertha Meyer, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Antonio Galina
- Laboratory of Bioenergetics and Mitochondrial Physiology, Institute of Medical Biochemistry, CCS, Federal University do Rio de Janeiro, Brazil
| | | | - Marcelo Marcos Morales
- Laboratory of Molecular and Cellular Physiology, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Ciria HMC, González MM, Zamora LO, Cabrales LEB, Sierra González GV, de Oliveira LO, Zanella R, Buzaid AC, Parise O, Brito LM, Teixeira CAA, Gomes MDN, Moreno G, Feo da Veiga V, Telló M, Holandino C. Antitumor effects of electrochemical treatment. Chin J Cancer Res 2013; 25:223-34. [PMID: 23592904 PMCID: PMC3626978 DOI: 10.3978/j.issn.1000-9604.2013.03.03] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 03/27/2013] [Indexed: 11/14/2022] Open
Abstract
Electrochemical treatment is an alternative modality for tumor treatment based on the application of a low intensity direct electric current to the tumor tissue through two or more platinum electrodes placed within the tumor zone or in the surrounding areas. This treatment is noted for its great effectiveness, minimal invasiveness and local effect. Several studies have been conducted worldwide to evaluate the antitumoral effect of this therapy. In all these studies a variety of biochemical and physiological responses of tumors to the applied treatment have been obtained. By this reason, researchers have suggested various mechanisms to explain how direct electric current destroys tumor cells. Although, it is generally accepted this treatment induces electrolysis, electroosmosis and electroporation in tumoral tissues. However, action mechanism of this alternative modality on the tumor tissue is not well understood. Although the principle of Electrochemical treatment is simple, a standardized method is not yet available. The mechanism by which Electrochemical treatment affects tumor growth and survival may represent more complex process. The present work analyzes the latest and most important research done on the electrochemical treatment of tumors. We conclude with our point of view about the destruction mechanism features of this alternative therapy. Also, we suggest some mechanisms and strategies from the thermodynamic point of view for this therapy. In the area of Electrochemical treatment of cancer this tool has been exploited very little and much work remains to be done. Electrochemical treatment constitutes a good therapeutic option for patients that have failed the conventional oncology methods.
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Affiliation(s)
- Héctor Manuel Camué Ciria
- Research Department, National Centre of Applied Electromagnetism, Oriente University, GP 4078, Santiago de Cuba, Cuba
| | | | | | - Luis Enrique Bergues Cabrales
- Research Department, National Centre of Applied Electromagnetism, Oriente University, GP 4078, Santiago de Cuba, Cuba
| | | | | | - Rodrigo Zanella
- Veterinary Teaching Hospital, Federal University of Rio Grande do Sul. Porto Alegre, RS, Brazil
| | | | | | - Luciana Macedo Brito
- Faculty of Pharmacy, Medicine Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Marina das Neves Gomes
- Faculty of Pharmacy, Medicine Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gleyce Moreno
- Faculty of Pharmacy, Medicine Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Venicio Feo da Veiga
- Faculty of Pharmacy, Medicine Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Professor Paulo de Góes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos Telló
- Pontifical Catholic University of Rio Grande do Sul. Porto Alegre, RS, Brazil
| | - Carla Holandino
- Faculty of Pharmacy, Medicine Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Gomes MDN, Teixeira CAA, Barbosa GM, Froes MT, Silva MB, da Veiga VF, Soares RMDA, dos Santos ALS, Holandino C. Effects of direct electric current on Herpetomonas samuelpessoai: An ultrastructural study. Bioelectromagnetics 2011; 33:334-45. [DOI: 10.1002/bem.20712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 09/18/2011] [Indexed: 01/28/2023]
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de Campos VEB, Teixeira CAA, da Veiga VF, Ricci E, Holandino C. L-tyrosine-loaded nanoparticles increase the antitumoral activity of direct electric current in a metastatic melanoma cell model. Int J Nanomedicine 2010; 5:961-71. [PMID: 21187948 PMCID: PMC3010158 DOI: 10.2147/ijn.s13634] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Inhibition of tumor growth induced by treatment with direct electric current (DC) has been reported in several models. One of the mechanisms responsible for the antitumoral activity of DC is the generation of oxidative species, known as chloramines. With the aim of increasing chloramine production in the electrolytic medium and optimizing the antitumoral effects of DC, poly(ɛ-caprolactone) (PCL) nanoparticles (NPs) loaded with the amino acid tyrosine were obtained. The physical–chemical characterization showed that the NPs presented size in nanometric range and monomodal distribution. A slightly negative electrokinetic potential was also found in both blank NPs and l-tyrosine-loaded PCL NPs. The yield of the loading process was approximately 50%. Within 3 h of dissolution assay, a burst release of about 80% l-tyrosine was obtained. The in vitro cytotoxicity of DC was significantly increased when associated with l-tyrosine-loaded NPs, using a murine multidrug-resistant melanoma cell line model. This study showed that the use of the combination of nanotechnology and DC has a promising antineoplastic potential and opens a new perspective in cancer therapy.
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Affiliation(s)
- Vânia Emerich Bucco de Campos
- Departamento de Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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