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Fernández-Bertólez N, Costa C, Brandão F, Duarte JA, Teixeira JP, Pásaro E, Valdiglesias V, Laffon B. Evaluation of cytotoxicity and genotoxicity induced by oleic acid-coated iron oxide nanoparticles in human astrocytes. Environ Mol Mutagen 2019; 60:816-829. [PMID: 31415110 DOI: 10.1002/em.22323] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/23/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
Iron oxide nanoparticles (ION) are gaining importance as diagnostic and therapeutic tool of central nervous system diseases. Although oleic acid-coated ION (O-ION) have been described as stable and biocompatible, their potential neurotoxicity was scarcely evaluated in human nervous cells so far. The primary aim of this work was to assess the molecular and cellular effects of O-ION on human astrocytes (A172 cells) under different experimental conditions. An extensive set of cyto- and genotoxicity tests was carried out, including lactate dehydrogenase release assay, cell cycle alterations, and cell death production, as well as comet assay, γH2AX assay, and micronucleus (MN) test, considering also iron ion release capacity and alterations in DNA repair ability. Results showed a moderate cytotoxicity related to cell cycle arrest and cell death promotion, regardless of serum presence. O-ION induced genotoxic effects, namely primary DNA damage, as detected by the comet assay and H2AX phosphorylation, but A172 cells were able to repair this particular damage because no chromosome alterations were found (confirmed by MN test results). Accordingly, no effects on the DNA repair ability were observed. The presence of serum proteins did not influence O-ION toxicity. Iron ions released from the O-ION surface seemed not to be responsible for the cytotoxic and genotoxic effects observed. Environ. Mol. Mutagen. 2019. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Natalia Fernández-Bertólez
- Department of Psychology, Area of Psychobiology, Edificio de Servicios Centrales de Investigación, Universidade da Coruña, DICOMOSA Group, Campus Elviña s/n, 15071-A Coruña, Spain
- Department of Cell and Molecular Biology, Facultad de Ciencias, Universidade da Coruña, Campus A Zapateira s/n, 15071-A Coruña, Spain
| | - Carla Costa
- Department of Environmental Health, Portuguese National Institute of Health, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 135, 4050-600 Porto, Portugal
| | - Fátima Brandão
- Department of Environmental Health, Portuguese National Institute of Health, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 135, 4050-600 Porto, Portugal
| | - José Alberto Duarte
- CIAFEL, Faculdade de Desporto, Universidade do Porto, Rua Dr. Plácido Costa, 91, 4200-450 Porto, Portugal
| | - Joao Paulo Teixeira
- Department of Environmental Health, Portuguese National Institute of Health, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 135, 4050-600 Porto, Portugal
| | - Eduardo Pásaro
- Department of Psychology, Area of Psychobiology, Edificio de Servicios Centrales de Investigación, Universidade da Coruña, DICOMOSA Group, Campus Elviña s/n, 15071-A Coruña, Spain
| | - Vanessa Valdiglesias
- Department of Psychology, Area of Psychobiology, Edificio de Servicios Centrales de Investigación, Universidade da Coruña, DICOMOSA Group, Campus Elviña s/n, 15071-A Coruña, Spain
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 135, 4050-600 Porto, Portugal
| | - Blanca Laffon
- Department of Psychology, Area of Psychobiology, Edificio de Servicios Centrales de Investigación, Universidade da Coruña, DICOMOSA Group, Campus Elviña s/n, 15071-A Coruña, Spain
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Chiani M, Toofani Milani A, Nemati M, Rezaeidian J, Ehsanbakhsh H, Ahmadi Z, Mazloomi E, Sadeghi V, Akbarzadeh Khiyavi A. Anticancer Effect of Cisplatin-Loaded Poly (Butylcyanoacrylate) Nanoparticles on A172 Brain Cancer Cells Line. Asian Pac J Cancer Prev 2019; 20:303-309. [PMID: 30678454 PMCID: PMC6485583 DOI: 10.31557/apjcp.2019.20.1.303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 01/27/2023] Open
Abstract
Background: Drug delivery systems have been designed to achieve targeted delivery and control the release rate
of the drugs. A serious challenge associated with drug delivery systems is the presence of the blood-brain barrier which
limits drugs penetration. In the current study, the effects of cisplatin nanoparticles on A172 brain cancer cell line were
investigated. Methods: Cisplatin nanoparticles were produced by miniemulsion polymerization technique and their
properties were evaluated. Drug release assay was performed to characterize the nanoparticles’ properties. Here, we
examined the effects of cisplatin nanoparticles and free form of cisplatin on A172 cancer cell line. MTT assay was
performed for different concentrations of the drug. To measure the apoptosis rate in A172 cell line in the presence
of cisplatin nanoparticles or its free from, Annexin V staining method was used. Results: Our results indicated that
loading type of cisplatin was physical loading and only 4.7% of cisplatin was released after 68 h. Furthermore, MTT
assay showed that cisplatin nanoparticles in all concentrations had more cytotoxic effects on the cells comparing with
the free form of cisplatin and control groups. We also showed that cisplatin nanoparticles could increase apoptosis
in cancer cells more than the drug in the free form by using flow cytometry technique. Conclusion: Overall, these
findings proved that cisplatin loaded on poly (Butylcyanoacrylate) nanoparticles, was more efficient than the free form
of cisplatin in treating A172 cancer cell line.
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Affiliation(s)
- Mohsen Chiani
- Department of Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran.,
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Bessa MJ, Brandão F, Querido MM, Costa C, Pereira CC, Valdiglesias V, Laffon B, Carriere M, Teixeira JP, Fraga S. Optimization of the harvesting and freezing conditions of human cell lines for DNA damage analysis by the alkaline comet assay. Mutat Res 2018; 845:402994. [PMID: 31561887 DOI: 10.1016/j.mrgentox.2018.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 12/06/2018] [Accepted: 12/09/2018] [Indexed: 10/27/2022]
Abstract
The comet assay is a commonly used method for in vitro and in vivo genotoxicity assessment. This versatile assay can be performed in a wide range of tissues and cell types. Although most of the studies use samples immediately processed after collection, frozen biological samples can also be used. The present study aimed to optimize a collection and freezing protocol to minimize the DNA damage associated with these procedures in human cell line samples for comet assay analysis. This study was conducted in glial A172 and lung alveolar epithelial A549 cells. Two cell detachment methods (mechanical vs enzymatic) and two cryoprotective media [FBS + 10% DMSO vs Cell Culture Media (CCM) + 10% DMSO] were tested, and DNA damage assessed at four time points following storage at -80 °C (one, two, four and eight weeks). In both cell lines, no differences in % tail intensity were detected between fresh and frozen cells up to eight weeks, irrespective of the harvesting method and freezing medium used. However, freshly isolated A172 cells exhibited a significant lower DNA damage when resuspended in CCM + 10% DMSO, while for A549 fresh cells the preferable harvesting method was the enzymatic one since it induced less DNA damage. Although both harvesting methods and cryoprotective media tested were found suitable, our data indicate that enzymatic harvesting and cryopreservation in CCM + 10% DMSO is a preferable method for DNA integrity preservation of human cell line samples for comet assay analysis. Our data also suggest that CCM is a preferable and cost-effective alternative to FBS in cryopreservation media. This optimized protocol allows the analysis of in vitro cell samples collected and frozen at different locations, with minimal interference on the basal DNA strand break levels in samples kept frozen up to eight weeks.
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Affiliation(s)
- Maria João Bessa
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Fátima Brandão
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Micaela Machado Querido
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Carla Costa
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Cristiana Costa Pereira
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Vanessa Valdiglesias
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Coruña, Spain.
| | - Blanca Laffon
- Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Coruña, Spain.
| | - Marie Carriere
- Université Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), France.
| | - João Paulo Teixeira
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Sónia Fraga
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
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