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Tutty MA, Prina-Mello A. Three-Dimensional Spheroids for Cancer Research. Methods Mol Biol 2023; 2645:65-103. [PMID: 37202612 DOI: 10.1007/978-1-0716-3056-3_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In vitro cell culture is one of the most widely used tools used today for increasing our understanding of various things such as protein production, mechanisms of drug action, tissue engineering, and overall cellular biology. For the past decades, however, cancer researchers have relied heavily on conventional two-dimensional (2D) monolayer culture techniques to test a variety of aspects of cancer research ranging from the cytotoxic effects of antitumor drugs to the toxicity of diagnostic dyes and contact tracers. However, many promising cancer therapies have either weak or no efficacy in real-life conditions, therefore delaying or stopping altogether their translating to the clinic. This is, in part, due to the reductionist 2D cultures used to test these materials, which lack appropriate cell-cell contacts, have altered signaling, do not represent the natural tumor microenvironment, and have different drug responses, due to their reduced malignant phenotype when compared to real in vivo tumors. With the most recent advances, cancer research has moved into 3D biological investigation. Three-dimensional (3D) cultures of cancer cells not only recapitulate the in vivo environment better than their 2D counterparts, but they have, in recent years, emerged as a relatively low-cost and scientifically accurate methodology for studying cancer. In this chapter, we highlight the importance of 3D culture, specifically 3D spheroid culture, reviewing some key methodologies for forming 3D spheroids, discussing the experimental tools that can be used in conjunction with 3D spheroids and finally their applications in cancer research.
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Affiliation(s)
- Melissa Anne Tutty
- Laboratory for Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, Dublin, Ireland.
| | - Adriele Prina-Mello
- Laboratory for Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, Dublin, Ireland
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, (TTMI), School of Medicine, Trinity College Dublin, Dublin, Ireland
- Trinity St. James's Cancer Institute, St. James's Hospital, Trinity College Dublin, Dublin, Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre, CRANN Institute, Trinity College Dublin, Dublin, Ireland
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Sendra M, Štampar M, Fras K, Novoa B, Figueras A, Žegura B. Adverse (geno)toxic effects of bisphenol A and its analogues in hepatic 3D cell model. ENVIRONMENT INTERNATIONAL 2023; 171:107721. [PMID: 36580735 PMCID: PMC9875311 DOI: 10.1016/j.envint.2022.107721] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/05/2022] [Accepted: 12/23/2022] [Indexed: 05/10/2023]
Abstract
Bisphenol A (BPA) is one of the most widely used and versatile chemical compounds in polymer additives and epoxy resins for manufacturing a range of products for human applications. It is known as endocrine disruptor, however, there is growing evidence that it is genotoxic. Because of its adverse effects, the European Union has restricted its use to protect human health and the environment. As a result, the industry has begun developing BPA analogues, but there are not yet sufficient toxicity data to claim that they are safe. We investigated the adverse toxic effects of BPA and its analogues (BPS, BPAP, BPAF, BPFL, and BPC) with emphasis on their cytotoxic and genotoxic activities after short (24-h) and prolonged (96-h) exposure in in vitro hepatic three-dimensional cell model developed from HepG2 cells. The results showed that BPFL and BPC (formed by an additional ring system) were the most cytotoxic analogues that affected cell viability, spheroid surface area and morphology, cell proliferation, and apoptotic cell death. BPA, BPAP, and BPAF induced DNA double-strand break formation (γH2AX assay), whereas BPAF and BPC increased the percentage of p-H3-positive cells, indicating their aneugenic activity. All BPs induced DNA single-strand break formation (comet assay), with BPAP (≥0.1 μM) being the most effective and BPA and BPC the least effective (≥1 μM) under conditions applied. The results indicate that not all of the analogues studied are safer alternatives to BPA and thus more in-depth research is urgently needed to adequately evaluate the risks of BPA analogues and assess their safety for humans.
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Affiliation(s)
- Marta Sendra
- Department of Biotechnology and Food Science, Faculty of Sciences, University of Burgos, Plaza Misael Bañuelos, 09001 Burgos, Spain; International Research Center in Critical Raw Materials-ICCRAM, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Martina Štampar
- National Institute of Biology, Department of Genetic Toxicology and Cancer Biology, 1000 Ljubljana, Slovenia.
| | - Katarina Fras
- National Institute of Biology, Department of Genetic Toxicology and Cancer Biology, 1000 Ljubljana, Slovenia.
| | - Beatriz Novoa
- Immunology and Genomics Group, Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, Spain.
| | - Antonio Figueras
- Immunology and Genomics Group, Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, Spain.
| | - Bojana Žegura
- National Institute of Biology, Department of Genetic Toxicology and Cancer Biology, 1000 Ljubljana, Slovenia; Jozef Stefan International Postgraduate School, 1000 Ljubljana, Slovenia.
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Three-dimensional (3D) liver cell models - a tool for bridging the gap between animal studies and clinical trials when screening liver accumulation and toxicity of nanobiomaterials. Drug Deliv Transl Res 2022; 12:2048-2074. [PMID: 35507131 PMCID: PMC9066991 DOI: 10.1007/s13346-022-01147-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2022] [Indexed: 12/13/2022]
Abstract
Despite the exciting properties and wide-reaching applications of nanobiomaterials (NBMs) in human health and medicine, their translation from bench to bedside is slow, with a predominant issue being liver accumulation and toxicity following systemic administration. In vitro 2D cell-based assays and in vivo testing are the most popular and widely used methods for assessing liver toxicity at pre-clinical stages; however, these fall short in predicting toxicity for NBMs. Focusing on in vitro and in vivo assessment, the accurate prediction of human-specific hepatotoxicity is still a significant challenge to researchers. This review describes the relationship between NBMs and the liver, and the methods for assessing toxicity, focusing on the limitations they bring in the assessment of NBM hepatotoxicity as one of the reasons defining the poor translation for NBMs. We will then present some of the most recent advances towards the development of more biologically relevant in vitro liver methods based on tissue-mimetic 3D cell models and how these could facilitate the translation of NBMs going forward. Finally, we also discuss the low public acceptance and limited uptake of tissue-mimetic 3D models in pre-clinical assessment, despite the demonstrated technical and ethical advantages associated with them.
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Forest V. Experimental and Computational Nanotoxicology-Complementary Approaches for Nanomaterial Hazard Assessment. NANOMATERIALS 2022; 12:nano12081346. [PMID: 35458054 PMCID: PMC9031966 DOI: 10.3390/nano12081346] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 12/25/2022]
Abstract
The growing development and applications of nanomaterials lead to an increasing release of these materials in the environment. The adverse effects they may elicit on ecosystems or human health are not always fully characterized. Such potential toxicity must be carefully assessed with the underlying mechanisms elucidated. To that purpose, different approaches can be used. First, experimental toxicology consisting of conducting in vitro or in vivo experiments (including clinical studies) can be used to evaluate the nanomaterial hazard. It can rely on variable models (more or less complex), allowing the investigation of different biological endpoints. The respective advantages and limitations of in vitro and in vivo models are discussed as well as some issues associated with experimental nanotoxicology. Perspectives of future developments in the field are also proposed. Second, computational nanotoxicology, i.e., in silico approaches, can be used to predict nanomaterial toxicity. In this context, we describe the general principles, advantages, and limitations especially of quantitative structure–activity relationship (QSAR) models and grouping/read-across approaches. The aim of this review is to provide an overview of these different approaches based on examples and highlight their complementarity.
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Affiliation(s)
- Valérie Forest
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, Etablissement Français du Sang, INSERM, U1059 Sainbiose, Centre CIS, F-42023 Saint-Etienne, France
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Doak SH, Clift MJD, Costa A, Delmaar C, Gosens I, Halappanavar S, Kelly S, Pejinenburg WJGM, Rothen-Rutishauser B, Schins RPF, Stone V, Tran L, Vijver MG, Vogel U, Wohlleben W, Cassee FR. The Road to Achieving the European Commission's Chemicals Strategy for Nanomaterial Sustainability-A PATROLS Perspective on New Approach Methodologies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200231. [PMID: 35324067 DOI: 10.1002/smll.202200231] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/17/2022] [Indexed: 06/14/2023]
Abstract
The European Green Deal outlines ambitions to build a more sustainable, climate neutral, and circular economy by 2050. To achieve this, the European Commission has published the Chemicals Strategy for Sustainability: Towards a Toxic-Free Environment, which provides targets for innovation to better protect human and environmental health, including challenges posed by hazardous chemicals and animal testing. The European project PATROLS (Physiologically Anchored Tools for Realistic nanOmateriaL hazard aSsessment) has addressed multiple aspects of the Chemicals Strategy for Sustainability by establishing a battery of new approach methodologies, including physiologically anchored human and environmental hazard assessment tools to evaluate the safety of engineered nanomaterials. PATROLS has delivered and improved innovative tools to support regulatory decision-making processes. These tools also support the need for reducing regulated vertebrate animal testing; when used at an early stage of the innovation pipeline, the PATROLS tools facilitate the safe and sustainable development of new nano-enabled products before they reach the market.
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Affiliation(s)
- Shareen H Doak
- Swansea University Medical School, Singleton Park, Swansea, SA2 8PP, UK
| | - Martin J D Clift
- Swansea University Medical School, Singleton Park, Swansea, SA2 8PP, UK
| | - Anna Costa
- Institute of Science and Technology for Ceramics, CNR-ISTEC-National Research Council of Italy, Faenza, Italy
| | - Christiaan Delmaar
- National Institute for Public Health and the Environment Netherlands, PO box 1, Bilthoven, 3720, the Netherlands
| | - Ilse Gosens
- National Institute for Public Health and the Environment Netherlands, PO box 1, Bilthoven, 3720, the Netherlands
| | - Sabina Halappanavar
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, K1A0K9, Canada
| | - Sean Kelly
- Nanotechnology Industries Association, Avenue Tervueren 143, Brussels, 1150, Belgium
| | - Willie J G M Pejinenburg
- National Institute for Public Health and the Environment Netherlands, PO box 1, Bilthoven, 3720, the Netherlands
- Leiden University, PO Box 9518, Leiden, 2300 RA, the Netherlands
| | | | - Roel P F Schins
- IUF-Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Düsseldorf, Germany
| | - Vicki Stone
- School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, UK
| | - Lang Tran
- Institute of Occupational Medicine (IOM), Edinburgh, Scotland, EH14 4AP, UK
| | - Martina G Vijver
- Leiden University, PO Box 9518, Leiden, 2300 RA, the Netherlands
| | - Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen, DK-2100, Denmark
| | - Wendel Wohlleben
- Advanced Materials Research, BASF SE, 67056, Ludwigshafen, Germany
| | - Flemming R Cassee
- National Institute for Public Health and the Environment Netherlands, PO box 1, Bilthoven, 3720, the Netherlands
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
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Conway GE, Shah UK, Llewellyn S, Cervena T, Evans SJ, Al Ali AS, Jenkins GJ, Clift MJD, Doak SH. Adaptation of the in vitro micronucleus assay for genotoxicity testing using 3D liver models supporting longer-term exposure durations. Mutagenesis 2021; 35:319-330. [PMID: 32780103 PMCID: PMC7486679 DOI: 10.1093/mutage/geaa018] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 06/23/2020] [Indexed: 02/06/2023] Open
Abstract
Following advancements in the field of genotoxicology, it has become widely accepted that 3D models are not only more physiologically relevant but also have the capacity to elucidate more complex biological processes that standard 2D monocultures are unable to. Whilst 3D liver models have been developed to evaluate the short-term genotoxicity of chemicals, the aim of this study was to develop a 3D model that could be used with the regulatory accepted in vitro micronucleus (MN) following low-dose, longer-term (5 days) exposure to engineered nanomaterials (ENMs). A comparison study was carried out between advanced models generated from two commonly used liver cell lines, namely HepaRG and HepG2, in spheroid format. While both spheroid systems displayed good liver functionality and viability over 14 days, the HepaRG spheroids lacked the capacity to actively proliferate and, therefore, were considered unsuitable for use with the MN assay. This study further demonstrated the efficacy of the in vitro 3D HepG2 model to be used for short-term (24 h) exposures to genotoxic chemicals, aflatoxin B1 (AFB1) and methyl-methanesulfonate (MMS). The 3D HepG2 liver spheroids were shown to be more sensitive to DNA damage induced by AFB1 and MMS when compared to the HepG2 2D monoculture. This 3D model was further developed to allow for longer-term (5 day) ENM exposure. Four days after seeding, HepG2 spheroids were exposed to Zinc Oxide ENM (0–2 µg/ml) for 5 days and assessed using both the cytokinesis-block MN (CBMN) version of the MN assay and the mononuclear MN assay. Following a 5-day exposure, differences in MN frequency were observed between the CBMN and mononuclear MN assay, demonstrating that DNA damage induced within the first few cell cycles is distributed across the mononucleated cell population. Together, this study demonstrates the necessity to adapt the MN assay accordingly, to allow for the accurate assessment of genotoxicity following longer-term, low-dose ENM exposure.
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Affiliation(s)
- Gillian E Conway
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
| | - Ume-Kulsoom Shah
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
| | - Samantha Llewellyn
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
| | - Tereza Cervena
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK.,Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, Prague, Czech Republic
| | - Stephen J Evans
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
| | - Abdullah S Al Ali
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
| | - Gareth J Jenkins
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
| | - Martin J D Clift
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
| | - Shareen H Doak
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Singleton Park Campus, Swansea, Wales, UK
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Llewellyn SV, Conway GE, Zanoni I, Jørgensen AK, Shah UK, Seleci DA, Keller JG, Kim JW, Wohlleben W, Jensen KA, Costa A, Jenkins GJS, Clift MJD, Doak SH. Understanding the impact of more realistic low-dose, prolonged engineered nanomaterial exposure on genotoxicity using 3D models of the human liver. J Nanobiotechnology 2021; 19:193. [PMID: 34183029 PMCID: PMC8240362 DOI: 10.1186/s12951-021-00938-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/13/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND With the continued integration of engineered nanomaterials (ENMs) into everyday applications, it is important to understand their potential for inducing adverse human health effects. However, standard in vitro hazard characterisation approaches suffer limitations for evaluating ENM and so it is imperative to determine these potential hazards under more physiologically relevant and realistic exposure scenarios in target organ systems, to minimise the necessity for in vivo testing. The aim of this study was to determine if acute (24 h) and prolonged (120 h) exposures to five ENMs (TiO2, ZnO, Ag, BaSO4 and CeO2) would have a significantly different toxicological outcome (cytotoxicity, (pro-)inflammatory and genotoxic response) upon 3D human HepG2 liver spheroids. In addition, this study evaluated whether a more realistic, prolonged fractionated and repeated ENM dosing regime induces a significantly different toxicity outcome in liver spheroids as compared to a single, bolus prolonged exposure. RESULTS Whilst it was found that the five ENMs did not impede liver functionality (e.g. albumin and urea production), induce cytotoxicity or an IL-8 (pro-)inflammatory response, all were found to cause significant genotoxicity following acute exposure. Most statistically significant genotoxic responses were not dose-dependent, with the exception of TiO2. Interestingly, the DNA damage effects observed following acute exposures, were not mirrored in the prolonged exposures, where only 0.2-5.0 µg/mL of ZnO ENMs were found to elicit significant (p ≤ 0.05) genotoxicity. When fractionated, repeated exposure regimes were performed with the test ENMs, no significant (p ≥ 0.05) difference was observed when compared to the single, bolus exposure regime. There was < 5.0% cytotoxicity observed across all exposures, and the mean difference in IL-8 cytokine release and genotoxicity between exposure regimes was 3.425 pg/mL and 0.181%, respectively. CONCLUSION In conclusion, whilst there was no difference between a single, bolus or fractionated, repeated ENM prolonged exposure regimes upon the toxicological output of 3D HepG2 liver spheroids, there was a difference between acute and prolonged exposures. This study highlights the importance of evaluating more realistic ENM exposures, thereby providing a future in vitro approach to better support ENM hazard assessment in a routine and easily accessible manner.
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Affiliation(s)
- Samantha V Llewellyn
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Gillian E Conway
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Ilaria Zanoni
- Institute of Science and Technology for Ceramics, CNR-ISTEC-National Research Council of Italy, Faenza, Italy
| | - Amalie Kofoed Jørgensen
- National Research Centre for the Working Environment (NRCWE), Lersø Parkallé 105, 2100, Copenhagen, Denmark
| | - Ume-Kulsoom Shah
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Didem Ag Seleci
- Advanced Materials Research, Department of Material Physics and Analytics, BASF SE, 67056, Ludwigshafen, Germany.,Advanced Materials Research, Department of Experimental Toxicology and Ecology, BASF SE, 67056, Ludwigshafen, Germany
| | - Johannes G Keller
- Advanced Materials Research, Department of Material Physics and Analytics, BASF SE, 67056, Ludwigshafen, Germany.,Advanced Materials Research, Department of Experimental Toxicology and Ecology, BASF SE, 67056, Ludwigshafen, Germany
| | - Jeong Won Kim
- Korea Research Institute of Standards and Science (KRISS), 267 Gajeong-ro, Daejeon, 34113, Korea
| | - Wendel Wohlleben
- Advanced Materials Research, Department of Material Physics and Analytics, BASF SE, 67056, Ludwigshafen, Germany.,Advanced Materials Research, Department of Experimental Toxicology and Ecology, BASF SE, 67056, Ludwigshafen, Germany
| | - Keld Alstrup Jensen
- National Research Centre for the Working Environment (NRCWE), Lersø Parkallé 105, 2100, Copenhagen, Denmark
| | - Anna Costa
- Institute of Science and Technology for Ceramics, CNR-ISTEC-National Research Council of Italy, Faenza, Italy
| | - Gareth J S Jenkins
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Martin J D Clift
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Shareen H Doak
- In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK.
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Kohl Y, Rundén-Pran E, Mariussen E, Hesler M, El Yamani N, Longhin EM, Dusinska M. Genotoxicity of Nanomaterials: Advanced In Vitro Models and High Throughput Methods for Human Hazard Assessment-A Review. NANOMATERIALS 2020; 10:nano10101911. [PMID: 32992722 PMCID: PMC7601632 DOI: 10.3390/nano10101911] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/17/2020] [Accepted: 09/22/2020] [Indexed: 12/12/2022]
Abstract
Changes in the genetic material can lead to serious human health defects, as mutations in somatic cells may cause cancer and can contribute to other chronic diseases. Genotoxic events can appear at both the DNA, chromosomal or (during mitosis) whole genome level. The study of mechanisms leading to genotoxicity is crucially important, as well as the detection of potentially genotoxic compounds. We consider the current state of the art and describe here the main endpoints applied in standard human in vitro models as well as new advanced 3D models that are closer to the in vivo situation. We performed a literature review of in vitro studies published from 2000–2020 (August) dedicated to the genotoxicity of nanomaterials (NMs) in new models. Methods suitable for detection of genotoxicity of NMs will be presented with a focus on advances in miniaturization, organ-on-a-chip and high throughput methods.
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Affiliation(s)
- Yvonne Kohl
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany;
- Correspondence: ; Tel.: +49-6897-9071-256
| | - Elise Rundén-Pran
- Health Effects Laboratory, NILU-Norwegian Institute for Air Research, 2007 Kjeller, Norway; (E.R.-P.); (E.M.); (N.E.Y.); (E.M.L.); (M.D.)
| | - Espen Mariussen
- Health Effects Laboratory, NILU-Norwegian Institute for Air Research, 2007 Kjeller, Norway; (E.R.-P.); (E.M.); (N.E.Y.); (E.M.L.); (M.D.)
| | - Michelle Hesler
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany;
| | - Naouale El Yamani
- Health Effects Laboratory, NILU-Norwegian Institute for Air Research, 2007 Kjeller, Norway; (E.R.-P.); (E.M.); (N.E.Y.); (E.M.L.); (M.D.)
| | - Eleonora Marta Longhin
- Health Effects Laboratory, NILU-Norwegian Institute for Air Research, 2007 Kjeller, Norway; (E.R.-P.); (E.M.); (N.E.Y.); (E.M.L.); (M.D.)
| | - Maria Dusinska
- Health Effects Laboratory, NILU-Norwegian Institute for Air Research, 2007 Kjeller, Norway; (E.R.-P.); (E.M.); (N.E.Y.); (E.M.L.); (M.D.)
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