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Cai J, Li B, Feng G, Zhang J, Fan H, Zheng B. Biomolecular interactions of carbon nanotubes with amyloid-β proteins. J Mater Chem B 2025. [PMID: 40405793 DOI: 10.1039/d5tb00153f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2025]
Abstract
Carbon nanotubes (CNTs) have attracted considerable attention due to their prominent advantages of adsorption, tensile strength, electronic conductivity, and surface functionalization using proteins or functional groups. Recent studies suggested that carbon quantum dots, graphene, and hybrid materials doped with CNTs can effectively inhibit the fibrillization of amyloid-β proteins (Aβ), which represents a significant signal of early Alzheimer's disease (AD). The investigations on the CNT-Aβ interaction can elucidate the reaction mechanism and reveal the basic reaction phenomena of CNTs in AD patients. This review systematically introduces the basic characteristics and biosafety of CNTs, the physicochemical properties of Aβ, and the CNT-Aβ interaction mechanism. We mainly summarize the mechanisms of different functional group modifications on the surface of CNTs for Aβ interactions, and even the interactions between different-diameter CNTs and Aβ. In addition, we also introduce the "protein crown" formed on the CNT surface, leading to the various CNT-Aβ interactions. Our work provides a theoretical basis for the biomedical application of CNTs and its applications in AD therapy/treatment.
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Affiliation(s)
- Jinxia Cai
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin, China.
- Wenzhou Safety (Emergency) Institute, Tianjin University, Wenzhou, China
| | - Bowen Li
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.
| | - Guoqing Feng
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.
| | - Jie Zhang
- Key Laboratory of Cellular Physiology, Ministry of Education, Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Haojun Fan
- Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin, China.
- Wenzhou Safety (Emergency) Institute, Tianjin University, Wenzhou, China
| | - Bin Zheng
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.
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2
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Furxhi I, Mirzaei M, Costa A, Bengalli R. From literature to predictive modeling: Insights and machine learning applications from in vitro comet assays related to the genotoxicity of titanium dioxide nanomaterials. NANOIMPACT 2025; 38:100562. [PMID: 40273981 DOI: 10.1016/j.impact.2025.100562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2024] [Revised: 03/20/2025] [Accepted: 04/21/2025] [Indexed: 04/26/2025]
Abstract
The genotoxicity of titanium dioxide nanomaterials (TiO2 NMs) remains a debated topic in the scientific community. In this study, we applied the read-across concept based on machine learning (ML) algorithms to predict the genotoxic potential of TiO₂ NMs. Key objectives included: (i) compiling a systematic dataset capturing DNA damage percentage from in vitro comet assays, (ii) creating a homogenized dataset integrating physicochemical properties, exposure conditions, and experimental details, (iii) training ML models for prediction, (iv) evaluating model performance, and (v) identifying the features that contribute the most to predictive accuracy. The dataset was divided into three parts: the Entire dataset (all features), the Physicochemical dataset, and the Experimental design dataset. Extra Trees Regressor and XGB Regressor demonstrated high predictive accuracy, achieving R2 values of 0.906 and 0.788 for the P-chem and Experimental dataset, respectively. Exposure concentration, cold lysis conditions, and electrophoresis parameters emerged as key predictors of DNA damage, alongside contributions from NM properties. These findings highlight the intricate interplay between NM properties and experimental conditions in genotoxicity assessments. By providing a FAIR dataset, this study facilitates future research, allowing for the integration of additional variables and quality criteria to enhance the modeling approach. This work reinforces the value of nano-informatics in nanosafety and serves as a footing for advancing data-driven hazard assessment methodologies, positioning ML-enabled read-across strategies as a valuable tool for regulatory nanosafety framework.
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Affiliation(s)
- Irini Furxhi
- CNR-ISSMC Istituto di Scienza e Tecnologia dei Materiali Ceramici, Via Granarolo, 64, 48018 Faenza, RA, Italy.
| | - Mahsa Mirzaei
- School of Biomolecular and Biomedical Science, UCD Conway Institute, University College Dublin, Dublin, Ireland.
| | - Anna Costa
- CNR-ISSMC Istituto di Scienza e Tecnologia dei Materiali Ceramici, Via Granarolo, 64, 48018 Faenza, RA, Italy.
| | - Rossella Bengalli
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, Milano 20126, Italy.
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Hristozov D, Badetti E, Bigini P, Brunelli A, Dekkers S, Diomede L, Doak SH, Fransman W, Gajewicz-Skretna A, Giubilato E, Gómez-Cuadrado L, Grafström R, Gutleb AC, Halappanavar S, Hischier R, Hunt N, Katsumiti A, Kermanizadeh A, Marcomini A, Moschini E, Oomen A, Pizzol L, Rumbo C, Schmid O, Shandilya N, Stone V, Stoycheva S, Stoeger T, Merino BS, Tran L, Tsiliki G, Vogel UB, Wohlleben W, Zabeo A. Next Generation Risk Assessment approaches for advanced nanomaterials: Current status and future perspectives. NANOIMPACT 2024; 35:100523. [PMID: 39059749 DOI: 10.1016/j.impact.2024.100523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 07/10/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024]
Abstract
This manuscript discusses the challenges of applying New Approach Methodologies (NAMs) for safe by design and regulatory risk assessment of advanced nanomaterials (AdNMs). The authors propose a framework for Next Generation Risk Assessment of AdNMs involving NAMs that is aligned to the conventional risk assessment paradigm. This framework is exposure-driven, endpoint-specific, makes best use of pre-existing information, and can be implemented in tiers of increasing specificity and complexity of the adopted NAMs. The tiered structure of the approach, which effectively combines the use of existing data with targeted testing will allow safety to be assessed cost-effectively and as far as possible with even more limited use of vertebrates. The regulatory readiness of state-of-the-art emerging NAMs is assessed in terms of Transparency, Reliability, Accessibility, Applicability, Relevance and Completeness, and their appropriateness for AdNMs is discussed in relation to each step of the risk assessment paradigm along with providing perspectives for future developments in the respective scientific and regulatory areas.
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Affiliation(s)
- Danail Hristozov
- East European Research and Innovation Enterprise (EMERGE), Otets Paisiy Str. 46, 1303 Sofa, Bulgaria.
| | - Elena Badetti
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
| | - Paolo Bigini
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Andrea Brunelli
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
| | - Susan Dekkers
- Netherlands Organisation for Applied Scientific Research (TNO), Princetonlaan 6, 3584 CB Utrecht, the Netherlands
| | - Luisa Diomede
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milano, Italy
| | - Shareen H Doak
- Swansea University Medical School, Faculty of Medicine, Health & Life Science, Singleton Park, Swansea SA2 8PP, United Kingdom
| | - Wouter Fransman
- Netherlands Organisation for Applied Scientific Research (TNO), Princetonlaan 6, 3584 CB Utrecht, the Netherlands
| | - Agnieszka Gajewicz-Skretna
- Laboratory of Environmental Chemoinformatics, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-309 Gdansk, Poland
| | - Elisa Giubilato
- GreenDecision Srl, Cannaregio 5904, 30121 Venezia, VE, Italy
| | - Laura Gómez-Cuadrado
- International Research Center in Critical Raw Materials for Advanced Industrial Technologies-ICCRAM, Universidad de Burgos, Plaza Misael Bañuelos s/n, Burgos 09001, Spain
| | - Roland Grafström
- Institute of Environmental Medicine, Karolinska Institutet, Nobels väg 13, 17177 Stockholm, Sweden
| | - Arno C Gutleb
- Luxemburg Institute of Science and Technology (LIST), 41, rue du Brill, L-4422 Belvaux, Luxembourg
| | - Sabina Halappanavar
- Environmental Health Science and Research Bureau, Health Canada, 251 Sir Frederick Banting Building, Banting Driveway, Ottawa, Ontario K1A 0K9, Canada
| | - Roland Hischier
- Swiss Federal Laboratories for Materials Science and Technology (EMPA), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Neil Hunt
- Yordas Group, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Alberto Katsumiti
- GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), Zamudio, Spain
| | - Ali Kermanizadeh
- University of Derby, College of Science and Engineering, Kedleston Road, Derby DE22 1GB, United Kingdom
| | - Antonio Marcomini
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
| | - Elisa Moschini
- Luxemburg Institute of Science and Technology (LIST), 41, rue du Brill, L-4422 Belvaux, Luxembourg; Heriot-Watt University, School of Engineering and Physical Sciences (EPS), Institute of Biological Chemistry, Biophysics and Bioengineering (IB3), David Brewster Building, Edinburgh EH14 4AS, United Kingdom
| | - Agnes Oomen
- National Institute for Public Health and the Environment (RIVM), Center for Safety of Substances and Products, Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, the Netherlands
| | - Lisa Pizzol
- GreenDecision Srl, Cannaregio 5904, 30121 Venezia, VE, Italy
| | - Carlos Rumbo
- International Research Center in Critical Raw Materials for Advanced Industrial Technologies-ICCRAM, Universidad de Burgos, Plaza Misael Bañuelos s/n, Burgos 09001, Spain
| | - Otmar Schmid
- Helmholtz Munich, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Neeraj Shandilya
- Netherlands Organisation for Applied Scientific Research (TNO), Princetonlaan 6, 3584 CB Utrecht, the Netherlands
| | - Vicki Stone
- Heriot-Watt University, School of Engineering and Physical Sciences (EPS), Institute of Biological Chemistry, Biophysics and Bioengineering (IB3), David Brewster Building, Edinburgh EH14 4AS, United Kingdom
| | - Stella Stoycheva
- Yordas Group, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Tobias Stoeger
- Helmholtz Munich, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | | | - Lang Tran
- Institute of Occupational Medicine (IOM), Research Avenue North, Riccarton, Edinburgh EH14 4AP, United Kingdom
| | - Georgia Tsiliki
- Purposeful IKE, Tritis Septembriou 144, Athens 11251, Greece
| | - Ulla Birgitte Vogel
- The National Research Centre for the Working Environment, Lersø Parkallé 105, DK-2100 Copenhagen, Denmark
| | - Wendel Wohlleben
- BASF SE, RGA/AP - B7, Carl-Bosch-Strasse 38, 67056 Ludwigshafen am Rhein, Germany
| | - Alex Zabeo
- GreenDecision Srl, Cannaregio 5904, 30121 Venezia, VE, Italy
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Burgum MJ, Ulrich C, Partosa N, Evans SJ, Gomes C, Seiffert SB, Landsiedel R, Honarvar N, Doak SH. Adapting the in vitro micronucleus assay (OECD Test Guideline No. 487) for testing of manufactured nanomaterials: recommendations for best practices. Mutagenesis 2024; 39:205-217. [PMID: 38502821 DOI: 10.1093/mutage/geae010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 03/18/2024] [Indexed: 03/21/2024] Open
Abstract
The current Organisation for Economic Co-Operation and Development test guideline number 487 (OECD TG No. 487) provides instruction on how to conduct the in vitro micronucleus assay. This assay is one of the gold standard approaches for measuring the mutagenicity of test items; however, it is directed at testing low molecular weight molecules and may not be appropriate for particulate materials (e.g. engineered nanoparticles [ENPs]). This study aimed to adapt the in vitro micronucleus assay for ENP testing and underpins the development of an OECD guidance document. A harmonized, nano-specific protocol was generated and evaluated by two independent laboratories. Cell lines utilized were human lymphoblastoid (TK6) cells, human liver hepatocytes (HepG2) cells, Chinese hamster lung fibroblast (V79) cells, whole blood, and buffy coat cells from healthy human volunteers. These cells were exposed to reference ENPs from the Joint Research Council (JRC): SiO2 (RLS-0102), Au5nm and Au30nm (RLS-03, RLS-010), CeO2 (NM212), and BaSO4 (NM220). Tungsten carbide-cobalt (WC/Co) was used as a trial particulate positive control. The chemical controls were positive in all cell cultures, but WC/Co was only positive in TK6 and buffy coat cells. In TK6 cells, mutagenicity was observed for SiO2- and both Au types. In HepG2 cells, Au5nm and SiO2 showed sub-two-fold increases in micronuclei. In V79 cells, whole blood, and buffy coat cells, no genotoxicity was detected with the test materials. The data confirmed that ENPs could be tested with the harmonized protocol, additionally, concordant data were observed across the two laboratories with V79 cells. WC/Co may be a suitable particulate positive control in the in vitro micronucleus assay when using TK6 and buffy coat cells. Detailed recommendations are therefore provided to adapt OECD TG No. 487 for testing ENP.
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Affiliation(s)
- Michael J Burgum
- In Vitro Toxicology Group, Faculty of Medicine, Health and Life Sciences, Institute of Life Sciences, Swansea University Medical School, Singleton Park, Swansea, SA2 8PP, Wales, United Kingdom
| | - Clarissa Ulrich
- BASF SE, Experimental Toxicology and Ecology, 67056, Ludwigshafen, Germany
| | - Natascha Partosa
- BASF SE, Experimental Toxicology and Ecology, 67056, Ludwigshafen, Germany
| | - Stephen J Evans
- In Vitro Toxicology Group, Faculty of Medicine, Health and Life Sciences, Institute of Life Sciences, Swansea University Medical School, Singleton Park, Swansea, SA2 8PP, Wales, United Kingdom
| | - Caroline Gomes
- BASF SE, Experimental Toxicology and Ecology, 67056, Ludwigshafen, Germany
| | | | - Robert Landsiedel
- BASF SE, Experimental Toxicology and Ecology, 67056, Ludwigshafen, Germany
- Free University of Berlin, Pharmacy - Pharmacology and Toxicology, 14195 Berlin, Germany
| | - Naveed Honarvar
- BASF SE, Experimental Toxicology and Ecology, 67056, Ludwigshafen, Germany
| | - Shareen H Doak
- In Vitro Toxicology Group, Faculty of Medicine, Health and Life Sciences, Institute of Life Sciences, Swansea University Medical School, Singleton Park, Swansea, SA2 8PP, Wales, United Kingdom
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5
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de Souza AM, Dantas MRDN, Secundo EL, Silva EDC, Silva PF, Moreira SMG, de Medeiros SRB. Are hydroxyapatite-based biomaterials free of genotoxicity? A systematic review. CHEMOSPHERE 2024; 352:141383. [PMID: 38360416 DOI: 10.1016/j.chemosphere.2024.141383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/26/2023] [Accepted: 02/02/2024] [Indexed: 02/17/2024]
Abstract
Hydroxyapatite (HA) is a biomaterial widely used in clinical applications and pharmaceuticals. The literature on HA-based materials studies is focused on chemical characterization and biocompatibility. Generally, biocompatibility is analyzed through adhesion, proliferation, and differentiation assays. Fewer studies are looking for genotoxic events. Thus, although HA-based biomaterials are widely used as biomedical devices, there is a lack of literature regarding their genotoxicity. This systematic review was carried out following the PRISMA statement. Specific search strategies were developed and performed in four electronic databases (PubMed, Science Direct, Scopus, and Web of Science). The search used "Hydroxyapatite OR Calcium Hydroxyapatite OR durapatite AND genotoxicity OR genotoxic OR DNA damage" and "Hydroxyapatite OR Calcium Hydroxyapatite OR durapatite AND mutagenicity OR mutagenic OR DNA damage" as keywords and articles published from 2000 to 2022, after removing duplicate studies and apply include and exclusion criteria, 53 articles were identified and submitted to a qualitative descriptive analysis. Most of the assays were in vitro and most of the studies did not show genotoxicity. In fact, a protective effect was observed for hydroxyapatites. Only 20 out of 71 tests performed were positive for genotoxicity. However, no point mutation-related mutagenicity was observed. As the genotoxicity of HA-based biomaterials observed was correlated with its nanostructured forms as needles or rods, it is important to follow their effect in chronic exposure to guarantee safe usage in humans.
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Affiliation(s)
- Augusto Monteiro de Souza
- Department of Cell Biology and Genetics, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | | | - Estefânia Lins Secundo
- Department of Cell Biology and Genetics, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Elisângela da Costa Silva
- Department of Cell Biology and Genetics, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Priscila Fernandes Silva
- Department of Cell Biology and Genetics, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Susana Margarida Gomes Moreira
- Department of Cell Biology and Genetics, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
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Pescke IK, de Oliveira Rozino L, Zenato K, Cardozo T, Flores WH, Vargas VMF. Lowering the pH leads to the disaggregation of NiO and ZnO nanoparticles and modifies the mutagenic response. J Appl Toxicol 2024; 44:445-454. [PMID: 37828814 DOI: 10.1002/jat.4553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/31/2023] [Accepted: 09/25/2023] [Indexed: 10/14/2023]
Abstract
In a changing environmental scenario, acid rain can have a significant impact on aquatic ecosystems. Acidification is known to produce corrosion in metals, hence increasing their harmful effects on the environment, organisms and human health. The prevalent use of metallic nanoparticles (NPs) in everyday products raises concerns regarding exposure and nanotoxicity even in these acidified conditions. We thus report on the cytotoxic and genotoxic potential of nickel oxide (NiO-NP) and zinc oxide (ZnO-NP) NPs when suspended in aqueous media in light of pH variations (7.5 and 5). A modified microsuspension method of the Salmonella/microsome assay was adopted, and strains (TA97a, TA98, TA100, TA102) were exposed to NPs (10-1280 μg/plate) with and without a metabolization fraction. The acidic condition favored disaggregation and caused a decrease in NPs size. Mutagenicity was observed in all samples and different strains, with greater DNA base pair substitution damage (TA100 and TA102), but extrinsic conditions (pH) suggest different action mechanisms of NiO-NP and ZnO-NP on genetic content. Mutagenic activity was found to increase upon metabolic activation (TA98, TA100, and TA102) demonstrating the bioactivity of NiO-NP and ZnO-NP in relation to metabolites generated by the mammalian p450 system in vitro. Modifications in the Salmonella assay methodology increased cell exposure time. The observed responses recommend this modified assay as one of the methodologies of choice for nanoecotoxicological evaluation. These findings emphasize the significance of incorporating the environmental context when evaluating the toxicity of metal-based NPs.
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Affiliation(s)
- Ismael Krüger Pescke
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- Laboratório de Mutagênese Ambiental, Centro de Ecologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Lívia de Oliveira Rozino
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- Laboratório de Mutagênese Ambiental, Centro de Ecologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Karoline Zenato
- Laboratório de Mutagênese Ambiental, Centro de Ecologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Tatiane Cardozo
- Grupo de Materiais Nanoestruturados, Universidade Federal do Pampa (UNIPAMPA), Bagé, Brazil
| | | | - Vera Maria Ferrão Vargas
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- Laboratório de Mutagênese Ambiental, Centro de Ecologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Ciura K, Moschini E, Stępnik M, Serchi T, Gutleb A, Jarzyńska K, Jagiello K, Puzyn T. Toward Nano-Specific In Silico NAMs: How to Adjust Nano-QSAR to the Recent Advancements of Nanotoxicology? SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305581. [PMID: 37775952 DOI: 10.1002/smll.202305581] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/08/2023] [Indexed: 10/01/2023]
Abstract
The rapid development of engineered nanomaterials (ENMs) causes humans to become increasingly exposed to them. Therefore, a better understanding of the health impact of ENMs is highly demanded. Considering the 3Rs (Replacement, Reduction, and Refinement) principle, in vitro and computational methods are excellent alternatives for testing on animals. Among computational methods, nano-quantitative structure-activity relationship (nano-QSAR), which links the physicochemical and structural properties of EMNs with biological activities, is one of the leading method. The nature of toxicological experiments has evolved over the last decades; currently, one experiment can provide thousands of measurements of the organism's functioning at the molecular level. At the same time, the capacity of the in vitro systems to mimic the human organism is also improving significantly. Hence, the authors would like to discuss whether the nano-QSAR approach follows modern toxicological studies and takes full advantage of the opportunities offered by modern toxicological platforms. Challenges and possibilities for improving data integration are underlined narratively, including the need for a consensus built between the in vitro and the QSAR domains.
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Affiliation(s)
- Krzesimir Ciura
- Department of Physical Chemistry, Medical University of Gdańsk, Al. Gen. Hallera 107, Gdańsk, 80-416, Poland
- QSAR Lab Ltd., Trzy Lipy 3 St., Gdańsk, 80-172, Poland
| | - Elisa Moschini
- Department of Environmental Research and Innovation, Luxembourg Institute of Science and Technology, des Hauts-Fourneaux, Esch/Alzette, 4362, Luxembourg
| | | | - Tommaso Serchi
- Department of Environmental Research and Innovation, Luxembourg Institute of Science and Technology, des Hauts-Fourneaux, Esch/Alzette, 4362, Luxembourg
| | - Arno Gutleb
- Department of Environmental Research and Innovation, Luxembourg Institute of Science and Technology, des Hauts-Fourneaux, Esch/Alzette, 4362, Luxembourg
| | - Kamila Jarzyńska
- Faculty of Chemistry, Laboratory of Environmental Chemoinformatics, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Karolina Jagiello
- QSAR Lab Ltd., Trzy Lipy 3 St., Gdańsk, 80-172, Poland
- Faculty of Chemistry, Laboratory of Environmental Chemoinformatics, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Tomasz Puzyn
- QSAR Lab Ltd., Trzy Lipy 3 St., Gdańsk, 80-172, Poland
- Faculty of Chemistry, Laboratory of Environmental Chemoinformatics, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
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Doak SH, Andreoli C, Burgum MJ, Chaudhry Q, Bleeker EAJ, Bossa C, Domenech J, Drobne D, Fessard V, Jeliazkova N, Longhin E, Rundén-Pran E, Stępnik M, El Yamani N, Catalán J, Dusinska M. Current status and future challenges of genotoxicity OECD Test Guidelines for nanomaterials: a workshop report. Mutagenesis 2023; 38:183-191. [PMID: 37234002 PMCID: PMC10448853 DOI: 10.1093/mutage/gead017] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Indexed: 05/27/2023] Open
Abstract
Genotoxicity testing for nanomaterials remains challenging as standard testing approaches require some adaptation, and further development of nano-specific OECD Test Guidelines (TGs) and Guidance Documents (GDs) are needed. However, the field of genotoxicology continues to progress and new approach methodologies (NAMs) are being developed that could provide relevant information on the range of mechanisms of genotoxic action that may be imparted by nanomaterials. There is a recognition of the need for implementation of new and/or adapted OECD TGs, new OECD GDs, and utilization of NAMs within a genotoxicity testing framework for nanomaterials. As such, the requirements to apply new experimental approaches and data for genotoxicity assessment of nanomaterials in a regulatory context is neither clear, nor used in practice. Thus, an international workshop with representatives from regulatory agencies, industry, government, and academic scientists was convened to discuss these issues. The expert discussion highlighted the current deficiencies that exist in standard testing approaches within exposure regimes, insufficient physicochemical characterization, lack of demonstration of cell or tissue uptake and internalization, and limitations in the coverage of genotoxic modes of action. Regarding the latter aspect, a consensus was reached on the importance of using NAMs to support the genotoxicity assessment of nanomaterials. Also highlighted was the need for close engagement between scientists and regulators to (i) provide clarity on the regulatory needs, (ii) improve the acceptance and use of NAM-generated data, and (iii) define how NAMs may be used as part of weight of evidence approaches for use in regulatory risk assessments.
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Affiliation(s)
- Shareen H Doak
- Institute of Life Science, Swansea University Medical School, Singelton Park, Swansea, SA2 8PP Wales, United Kingdom
| | - Cristina Andreoli
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Michael J Burgum
- Institute of Life Science, Swansea University Medical School, Singelton Park, Swansea, SA2 8PP Wales, United Kingdom
| | - Qasim Chaudhry
- University of Chester, Parkgate Road, Chester, United Kingdom
| | - Eric A J Bleeker
- National Institute for Public Health and the Environment (RIVM), PO Box 1, 3720 BA Bilthoven, The Netherlands
| | - Cecilia Bossa
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Josefa Domenech
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland
| | - Damjana Drobne
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Vecan pot 111, 1000 Ljubljana, Slovenia
| | - Valérie Fessard
- ANSES French Agency for Food, Environmental and Occupational Health and Safety, Fougères Laboratory, Toxicology of Contaminants Unit, 10b rue Claude Bourgelat, Fougères 35306, France
| | | | - Eleonora Longhin
- NILU-Norwegian Institute for Air Research, Instituttveien 18, Kjeller 2002, Norway
| | - Elise Rundén-Pran
- NILU-Norwegian Institute for Air Research, Instituttveien 18, Kjeller 2002, Norway
| | | | - Naouale El Yamani
- NILU-Norwegian Institute for Air Research, Instituttveien 18, Kjeller 2002, Norway
| | - Julia Catalán
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland
- Department of Anatomy, Embryology, and Genetics, University of Zaragoza, 50013 Zaragoza, Spain
| | - Maria Dusinska
- NILU-Norwegian Institute for Air Research, Instituttveien 18, Kjeller 2002, Norway
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9
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Taibi M, Elbouzidi A, Ouahhoud S, Loukili EH, Ou-Yahya D, Ouahabi S, Alqahtani AS, Noman OM, Addi M, Bellaouchi R, Asehraou A, Saalaoui E, Guerrouj BE, Chaabane K. Evaluation of Antioxidant Activity, Cytotoxicity, and Genotoxicity of Ptychotis verticillata Essential Oil: Towards Novel Breast Cancer Therapeutics. Life (Basel) 2023; 13:1586. [PMID: 37511960 PMCID: PMC10381740 DOI: 10.3390/life13071586] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Breast cancer is a disease characterized by the uncontrolled proliferation of malignant cells in breast tissue, and oxidative stress activated by an accumulation of reactive oxygen species (ROS) is associated with its development and progression. Essential oils from medicinal plants, known for their antioxidant and therapeutic properties, are being explored as alternatives. Ptychotis verticillata, also known as Nûnkha, is a medicinal plant native to Morocco, belonging to the Apiaceae family, and used for generations in traditional medicine. This study focuses on the phytochemical characterization of P. verticillata essential oil (PVEO) from the province of Oujda, Morocco, for its therapeutic properties. The essential oil was obtained by hydro-distillation, and its volatile components were analyzed by gas chromatography-mass spectrometry (GC-MS). The results revealed the presence of various aromatic and terpene compounds, with carvacrol being the most abundant compound. PVEO showed antioxidant properties in several tests, including β-carotene bleaching, 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging and total antioxidant capacity (TAC). It also demonstrated cytotoxicity against MCF-7 and MDA-MB-231 breast cancer cell lines, with higher selectivity for MDA-MB-231. The results reveal that Ptychotis verticillata essential oil (PVEO) could be a promising natural alternative for the treatment of breast cancer.
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Affiliation(s)
- Mohamed Taibi
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
- Centre de l'Oriental des Sciences et Technologies de l'Eau et de l'Environnement (COSTEE), Université Mohammed Premier, Oujda 60000, Morocco
| | - Amine Elbouzidi
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
| | - Sabir Ouahhoud
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, B.P. 717, Oujda 60000, Morocco
| | - El Hassania Loukili
- Centre de l'Oriental des Sciences et Technologies de l'Eau et de l'Environnement (COSTEE), Université Mohammed Premier, Oujda 60000, Morocco
| | - Douâae Ou-Yahya
- Centre de l'Oriental des Sciences et Technologies de l'Eau et de l'Environnement (COSTEE), Université Mohammed Premier, Oujda 60000, Morocco
| | - Safae Ouahabi
- Laboratory of Applied and Environmental Chemistry (LCAE), Faculty of Sciences, Mohammed First University, B.P. 717, Oujda 60000, Morocco
| | - Ali S Alqahtani
- Department of Pharmacognosy, College of Pharmacy, King Saud University, B.P. 2457, Riyadh 11451, Saudi Arabia
| | - Omar M Noman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, B.P. 2457, Riyadh 11451, Saudi Arabia
| | - Mohamed Addi
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRAE USC1328, University of Orleans, CEDEX 2, 45067 Orléans, France
| | - Reda Bellaouchi
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, B.P. 717, Oujda 60000, Morocco
| | - Abdeslam Asehraou
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, B.P. 717, Oujda 60000, Morocco
| | - Ennouamane Saalaoui
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, B.P. 717, Oujda 60000, Morocco
| | - Bouchra El Guerrouj
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
- Centre de l'Oriental des Sciences et Technologies de l'Eau et de l'Environnement (COSTEE), Université Mohammed Premier, Oujda 60000, Morocco
| | - Khalid Chaabane
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
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10
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Ruijter N, Soeteman-Hernández LG, Carrière M, Boyles M, McLean P, Catalán J, Katsumiti A, Cabellos J, Delpivo C, Sánchez Jiménez A, Candalija A, Rodríguez-Llopis I, Vázquez-Campos S, Cassee FR, Braakhuis H. The State of the Art and Challenges of In Vitro Methods for Human Hazard Assessment of Nanomaterials in the Context of Safe-by-Design. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:472. [PMID: 36770432 PMCID: PMC9920318 DOI: 10.3390/nano13030472] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
The Safe-by-Design (SbD) concept aims to facilitate the development of safer materials/products, safer production, and safer use and end-of-life by performing timely SbD interventions to reduce hazard, exposure, or both. Early hazard screening is a crucial first step in this process. In this review, for the first time, commonly used in vitro assays are evaluated for their suitability for SbD hazard testing of nanomaterials (NMs). The goal of SbD hazard testing is identifying hazard warnings in the early stages of innovation. For this purpose, assays should be simple, cost-effective, predictive, robust, and compatible. For several toxicological endpoints, there are indications that commonly used in vitro assays are able to predict hazard warnings. In addition to the evaluation of assays, this review provides insights into the effects of the choice of cell type, exposure and dispersion protocol, and the (in)accurate determination of dose delivered to cells on predictivity. Furthermore, compatibility of assays with challenging advanced materials and NMs released from nano-enabled products (NEPs) during the lifecycle is assessed, as these aspects are crucial for SbD hazard testing. To conclude, hazard screening of NMs is complex and joint efforts between innovators, scientists, and regulators are needed to further improve SbD hazard testing.
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Affiliation(s)
- Nienke Ruijter
- National Institute for Public Health & the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | | | - Marie Carrière
- Univ. Grenoble-Alpes, CEA, CNRS, SyMMES-CIBEST, 17 rue des Martyrs, 38000 Grenoble, France
| | - Matthew Boyles
- Institute of Occupational Medicine (IOM), Edinburgh EH14 4AP, UK
| | - Polly McLean
- Institute of Occupational Medicine (IOM), Edinburgh EH14 4AP, UK
| | - Julia Catalán
- Finnish Institute of Occupational Health, 00250 Helsinki, Finland
- Department of Anatomy, Embryology and Genetics, University of Zaragoza, 50013 Zaragoza, Spain
| | - Alberto Katsumiti
- GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), 48170 Zamudio, Spain
| | | | | | | | | | - Isabel Rodríguez-Llopis
- GAIKER Technology Centre, Basque Research and Technology Alliance (BRTA), 48170 Zamudio, Spain
| | | | - Flemming R. Cassee
- National Institute for Public Health & the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, 3584 CS Utrecht, The Netherlands
| | - Hedwig Braakhuis
- National Institute for Public Health & the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
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11
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Rodriguez-Garraus A, Alonso-Jauregui M, Gil AG, Navarro-Blasco I, López de Cerain A, Azqueta A. Genotoxicity and Toxicity Assessment of a Formulation Containing Silver Nanoparticles and Kaolin: An In Vivo Integrative Approach. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:3. [PMID: 36615913 PMCID: PMC9824684 DOI: 10.3390/nano13010003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
A new material composed of a kaolin base with silver nanoparticles (AgNPs) attached to its surface was developed, as an alternative to antibiotics used as supplements in animal feed. As part of its safety assessment, an in vivo geno-toxicological evaluation of this material was conducted in rats. First, a preliminary dose finding study was carried out to decide the doses to be tested in the main study: 50, 300 and 2000 mg/kg b.w. For the main study, a combined strategy composed of the MN test (TG 474) and the comet assay (TG 489), integrated in a repeated dose 28-day oral toxicity study (TG 407), was performed. A No Observed Adverse Effect Level (NOAEL) of 2000 mg of the silver-kaolin formulation/kg b.w. by oral route, for 28 days, was determined. The silver-kaolin formulation did not induce micronuclei in bone marrow, or DNA strand breaks (SBs) or alkali labile sites (ALS) in liver, spleen, kidney or duodenum at any dose. The modified Fpg comet assay did not reveal oxidized bases in the same tissues at the dose of 2000 mg/kg b.w. Silver was quantified by ICP-MS in all the target organs, confirming the negative results obtained under these conditions.
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Affiliation(s)
- Adriana Rodriguez-Garraus
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
| | - María Alonso-Jauregui
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
| | - Ana-Gloria Gil
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
| | - Iñigo Navarro-Blasco
- Department of Chemistry, School of Sciences, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
| | - Adela López de Cerain
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
- Navarra Institute for Health Research, IdiSNA, Irunlarrea 3, 31008 Pamplona, Spain
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
- Navarra Institute for Health Research, IdiSNA, Irunlarrea 3, 31008 Pamplona, Spain
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12
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Saadati F, da Silva Brito WA, Emmert S, Bekeschus S. Optimized High-Content Imaging Screening Quantifying Micronuclei Formation in Polymer-Treated HaCaT Keratinocytes. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4463. [PMID: 36558315 PMCID: PMC9788386 DOI: 10.3390/nano12244463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Research on nano- and micro-plastic particles (NMPPs) suggests their potential threat to human health. Some studies have even suggested genotoxic effects of NMPP exposure, such as micronuclei (MN) formation, while others found the opposite. To clarify the ability of NMPP to induce MN formation, we used non-malignant HaCaT keratinocytes and exposed these to a variety of polystyrene (PS) and poly methyl methacrylate (PMMA) particle types at different concentrations and three different sizes. Investigations were performed following acute (one day) and chronic exposure (five weeks) against cytotoxic (amino-modified NMPPs) and genotoxic (methyl methanesulfonate, MMS) positive controls. An optimized high-content imaging workflow was established strictly according to OECD guidelines for analysis. Algorithm-based object segmentation and MN identification led to computer-driven, unsupervised quantitative image analysis results on MN frequencies among the different conditions and thousands of cells per condition. This could only be realized using accutase, allowing for partial cell detachment for optimal identification of bi-nucleated cells. Cytotoxic amino-modified particles were not genotoxic; MMS was both. During acute and long-term studies, PS and PMMA particles were neither toxic nor increased MN formation, except for 1000 nm PS particles at the highest concentration of unphysiological 100 µg/mL. Interestingly, ROS formation was significantly decreased in this condition. Hence, most non-charged polymer particles were neither toxic nor genotoxic, while aminated particles were toxic but not genotoxic. Altogether, we present an optimized quantitative imaging workflow applied to a timely research question in environmental toxicity.
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Affiliation(s)
- Fariba Saadati
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
- Clinic and Policlinic for Dermatology and Venereology, Rostock University Medical Center, Strempelstr. 13, 18057 Rostock, Germany
| | - Walison Augusto da Silva Brito
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
- Department of General Pathology, State University of Londrina, Rodovia Celso Garcia Cid, Londrina 86057970, Brazil
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, Rostock University Medical Center, Strempelstr. 13, 18057 Rostock, Germany
| | - Sander Bekeschus
- ZIK plasmatis, Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
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13
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Llewellyn SV, Kermanizadeh A, Ude V, Jacobsen NR, Conway GE, Shah UK, Niemeijer M, Moné MJ, van de Water B, Roy S, Moritz W, Stone V, Jenkins GJS, Doak SH. Assessing the transferability and reproducibility of 3D in vitro liver models from primary human multi-cellular microtissues to cell-line based HepG2 spheroids. Toxicol In Vitro 2022; 85:105473. [PMID: 36108805 DOI: 10.1016/j.tiv.2022.105473] [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: 07/27/2022] [Revised: 09/02/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022]
Abstract
To reduce, replace, and refine in vivo testing, there is increasing emphasis on the development of more physiologically relevant in vitro test systems to improve the reliability of non-animal-based methods for hazard assessment. When developing new approach methodologies, it is important to standardize the protocols and demonstrate the methods can be reproduced by multiple laboratories. The aim of this study was to assess the transferability and reproducibility of two advanced in vitro liver models, the Primary Human multicellular microtissue liver model (PHH) and the 3D HepG2 Spheroid Model, for nanomaterial (NM) and chemical hazard assessment purposes. The PHH model inter-laboratory trial showed strong consistency across the testing sites. All laboratories evaluated cytokine release and cytotoxicity following exposure to titanium dioxide (TiO2) and zinc oxide (ZnO) nanoparticles. No significant difference was observed in cytotoxicity or IL-8 release for the test materials. The data were reproducible with all three laboratories with control readouts within a similar range. The PHH model ZnO induced the greatest cytotoxicity response at 50.0 μg/mL and a dose-dependent increase in IL-8 release. For the 3D HepG2 spheroid model, all test sites were able to construct the model and demonstrated good concordance in IL-8 cytokine release and genotoxicity data. This trial demonstrates the successful transfer of new approach methodologies across multiple laboratories, with good reproducibility for several hazard endpoints.
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Affiliation(s)
- Samantha V Llewellyn
- In vitro Toxicology Group, Institute of Life Sciences, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Ali Kermanizadeh
- University of Derby, School of Human Sciences, Derby DE22 1GB, UK
| | - Victor Ude
- Heriot Watt University, School of Engineering and Physical Sciences, Nano Safety Research Group, Edinburgh, UK
| | - Nicklas Raun Jacobsen
- National Research Centre for the Working Environment (NRCWE), Lersø Parkallé 105, DK-2100 Copenhagen, Denmark
| | - Gillian E Conway
- In vitro Toxicology Group, Institute of Life Sciences, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Ume-Kulsoom Shah
- In vitro Toxicology Group, Institute of Life Sciences, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Marije Niemeijer
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, Leiden 2333 CC, the Netherlands
| | - Martijn J Moné
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, Leiden 2333 CC, the Netherlands
| | - Bob van de Water
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, Leiden 2333 CC, the Netherlands
| | - Shambhu Roy
- MilliporeSigma, 14920 Broschart Road, Rockville, MD 20850, USA
| | | | - Vicki Stone
- Heriot Watt University, School of Engineering and Physical Sciences, Nano Safety Research Group, Edinburgh, UK
| | - Gareth J S Jenkins
- In vitro Toxicology Group, Institute of Life Sciences, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
| | - Shareen H Doak
- In vitro Toxicology Group, Institute of Life Sciences, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK.
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14
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A weight of evidence review of the genotoxicity of titanium dioxide (TiO2). Regul Toxicol Pharmacol 2022; 136:105263. [DOI: 10.1016/j.yrtph.2022.105263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/26/2022] [Accepted: 09/10/2022] [Indexed: 11/06/2022]
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15
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Landsiedel R, Honarvar N, Seiffert SB, Oesch B, Oesch F. Genotoxicity testing of nanomaterials. WIRES NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 14:e1833. [DOI: 10.1002/wnan.1833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 11/24/2022]
Affiliation(s)
- Robert Landsiedel
- Experimental Toxicology and Ecology BASF SE Ludwigshafen am Rhein Germany
- Pharmacy, Pharmacology and Toxicology Free University of Berlin Berlin Germany
| | - Naveed Honarvar
- Experimental Toxicology and Ecology BASF SE Ludwigshafen am Rhein Germany
| | | | - Barbara Oesch
- Oesch‐Tox Toxicological Consulting and Expert Opinions, GmbH & Co KG Ingelheim Germany
| | - Franz Oesch
- Oesch‐Tox Toxicological Consulting and Expert Opinions, GmbH & Co KG Ingelheim Germany
- Institute of Toxicology Johannes Gutenberg University Mainz Germany
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16
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El Yamani N, Rubio L, García-Rodríguez A, Kažimírová A, Rundén-Pran E, Magdalena B, Marcos R, Dusinska M. Lack of mutagenicity of TiO 2 nanoparticles in vitro despite cellular and nuclear uptake. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 882:503545. [PMID: 36155144 DOI: 10.1016/j.mrgentox.2022.503545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 06/16/2023]
Abstract
The potential genotoxicity of titanium dioxide (TiO2) nanoparticles (NPs) is a conflictive topic because both positive and negative findings have been reported. To add clarity, we have carried out a study with two cell lines (V79-4 and A549) to evaluate the effects of TiO2 NPs (NM-101), with a diameter ranging from 15 to 60 nm, at concentrations 1-75 μg/cm2. Using two different dispersion procedures, cell uptake was determined by Transmission Electron Microscopy (TEM). Mutagenicity was evaluated using the Hprt gene mutation test, while genotoxicity was determined with the comet assay, detecting both DNA breaks and oxidized DNA bases (with formamidopyrimidine glycosylase - Fpg). Cell internalization, as determined by TEM, shows TiO2 NM-101 in cytoplasmic vesicles, as well as close to and inside the nucleus. Such internalization did not depend on the state of agglomeration, nor the dispersion used. In spite of such internalization, no cytotoxicity was detected in V79-4 cells (relative growth activity and plating efficiency assays) or in A549 cells (AlamarBlue assay) after exposure lasting for 24 h. However, a significant decrease in the relative growth activity was detected at longer exposure times (48 and 72 h) and at the highest concentration 75 µg/cm2. When the modified enzyme-linked alkaline comet assay was performed on A549 cells, although no significant induction of DNA damage was detected, a positive concentration-effects relationship was observed (Spearman's correlation = 0.9, p 0.0001). Furthermore, no significant increase of DNA oxidized purine bases was observed. When the frequency of Hprt gene mutants was determined in V79-4 cells, no increase was observed in the exposed cells, relative to the unexposed cultures. Our general conclusion is that, under our experimental conditions, TiO2 NM-101 exposure does not exert mutagenic effects despite the evidence of NP uptake by V79-4 cells.
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Affiliation(s)
- Naouale El Yamani
- Health Effects Laboratory, Department for Environmental Chemistry, NILU - Norwegian Institute for Air Research, Kjeller, Norway
| | - Laura Rubio
- Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès (Barcelona), Spain
| | - Alba García-Rodríguez
- Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès (Barcelona), Spain
| | - Alena Kažimírová
- Department of Biology, Faculty of Medicine, Slovak Medical University, 833 03 Bratislava, Slovakia
| | - Elise Rundén-Pran
- Health Effects Laboratory, Department for Environmental Chemistry, NILU - Norwegian Institute for Air Research, Kjeller, Norway
| | - Barančoková Magdalena
- Department of Biology, Faculty of Medicine, Slovak Medical University, 833 03 Bratislava, Slovakia
| | - Ricard Marcos
- Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès (Barcelona), Spain.
| | - Maria Dusinska
- Health Effects Laboratory, Department for Environmental Chemistry, NILU - Norwegian Institute for Air Research, Kjeller, Norway.
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17
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Vital N, Ventura C, Kranendonk M, Silva MJ, Louro H. Toxicological Assessment of Cellulose Nanomaterials: Oral Exposure. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3375. [PMID: 36234501 PMCID: PMC9565252 DOI: 10.3390/nano12193375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Cellulose nanomaterials (CNMs) have emerged recently as an important group of sustainable bio-based nanomaterials (NMs) with potential applications in multiple sectors, including the food, food packaging, and biomedical fields. The widening of these applications leads to increased human oral exposure to these NMs and, potentially, to adverse health outcomes. Presently, the potential hazards regarding oral exposure to CNMs are insufficiently characterised. There is a need to understand and manage the potential adverse effects that might result from the ingestion of CNMs before products using CNMs reach commercialisation. This work reviews the potential applications of CNMs in the food and biomedical sectors along with the existing toxicological in vitro and in vivo studies, while also identifying current knowledge gaps. Relevant considerations when performing toxicological studies following oral exposure to CNMs are highlighted. An increasing number of studies have been published in the last years, overall showing that ingested CNMs are not toxic to the gastrointestinal tract (GIT), suggestive of the biocompatibility of the majority of the tested CNMs. However, in vitro and in vivo genotoxicity studies, as well as long-term carcinogenic or reproductive toxicity studies, are not yet available. These studies are needed to support a wider use of CNMs in applications that can lead to human oral ingestion, thereby promoting a safe and sustainable-by-design approach.
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Affiliation(s)
- Nádia Vital
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Célia Ventura
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Michel Kranendonk
- NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Maria João Silva
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Henriqueta Louro
- National Institute of Health Dr. Ricardo Jorge, Department of Human Genetics, 1649-016 Lisbon, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
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18
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Siivola KK, Burgum MJ, Suárez-Merino B, Clift MJD, Doak SH, Catalán J. A systematic quality evaluation and review of nanomaterial genotoxicity studies: a regulatory perspective. Part Fibre Toxicol 2022; 19:59. [PMID: 36104711 PMCID: PMC9472411 DOI: 10.1186/s12989-022-00499-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 08/26/2022] [Indexed: 12/29/2022] Open
Abstract
The number of publications in the field of nanogenotoxicology and the amount of genotoxicity data on nanomaterials (NMs) in several databases generated by European Union (EU) funded projects have increased during the last decade. In parallel, large research efforts have contributed to both our understanding of key physico-chemical (PC) parameters regarding NM characterization as well as the limitations of toxicological assays originally designed for soluble chemicals. Hence, it is becoming increasingly clear that not all of these data are reliable or relevant from the regulatory perspective. The aim of this systematic review is to investigate the extent of studies on genotoxicity of NMs that can be considered reliable and relevant by current standards and bring focus to what is needed for a study to be useful from the regulatory point of view. Due to the vast number of studies available, we chose to limit our search to two large groups, which have raised substantial interest in recent years: nanofibers (including nanotubes) and metal-containing nanoparticles. Focusing on peer-reviewed publications, we evaluated the completeness of PC characterization of the tested NMs, documentation of the model system, study design, and results according to the quality assessment approach developed in the EU FP-7 GUIDEnano project. Further, building on recently published recommendations for best practices in nanogenotoxicology research, we created a set of criteria that address assay-specific reliability and relevance for risk assessment purposes. Articles were then reviewed, the qualifying publications discussed, and the most common shortcomings in NM genotoxicity studies highlighted. Moreover, several EU projects under the FP7 and H2020 framework set the aim to collectively feed the information they produced into the eNanoMapper database. As a result, and over the years, the eNanoMapper database has been extended with data of various quality depending on the existing knowledge at the time of entry. These activities are highly relevant since negative results are often not published. Here, we have reviewed the NanoInformaTIX instance under the eNanoMapper database, which hosts data from nine EU initiatives. We evaluated the data quality and the feasibility of use of the data from a regulatory perspective for each experimental entry.
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Affiliation(s)
- Kirsi K. Siivola
- grid.6975.d0000 0004 0410 5926Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland
| | - Michael J. Burgum
- grid.4827.90000 0001 0658 8800In Vitro Toxicology Group, Faculty of Medicine, Health and Life Sciences, Institute of Life Sciences, Swansea University Medical School, Singleton Park, Swansea, SA2 8PP Wales UK
| | | | - Martin J. D. Clift
- grid.4827.90000 0001 0658 8800In Vitro Toxicology Group, Faculty of Medicine, Health and Life Sciences, Institute of Life Sciences, Swansea University Medical School, Singleton Park, Swansea, SA2 8PP Wales UK
| | - Shareen H. Doak
- grid.4827.90000 0001 0658 8800In Vitro Toxicology Group, Faculty of Medicine, Health and Life Sciences, Institute of Life Sciences, Swansea University Medical School, Singleton Park, Swansea, SA2 8PP Wales UK
| | - Julia Catalán
- grid.6975.d0000 0004 0410 5926Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland ,grid.11205.370000 0001 2152 8769Department of Anatomy Embryology and Genetics, University of Zaragoza, 50013 Zaragoza, Spain
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Nanosafety: An Evolving Concept to Bring the Safest Possible Nanomaterials to Society and Environment. NANOMATERIALS 2022; 12:nano12111810. [PMID: 35683670 PMCID: PMC9181910 DOI: 10.3390/nano12111810] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 11/16/2022]
Abstract
The use of nanomaterials has been increasing in recent times, and they are widely used in industries such as cosmetics, drugs, food, water treatment, and agriculture. The rapid development of new nanomaterials demands a set of approaches to evaluate the potential toxicity and risks related to them. In this regard, nanosafety has been using and adapting already existing methods (toxicological approach), but the unique characteristics of nanomaterials demand new approaches (nanotoxicology) to fully understand the potential toxicity, immunotoxicity, and (epi)genotoxicity. In addition, new technologies, such as organs-on-chips and sophisticated sensors, are under development and/or adaptation. All the information generated is used to develop new in silico approaches trying to predict the potential effects of newly developed materials. The overall evaluation of nanomaterials from their production to their final disposal chain is completed using the life cycle assessment (LCA), which is becoming an important element of nanosafety considering sustainability and environmental impact. In this review, we give an overview of all these elements of nanosafety.
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Evaluating nanobiomaterial-induced DNA strand breaks using the alkaline comet assay. Drug Deliv Transl Res 2022; 12:2243-2258. [PMID: 35612707 PMCID: PMC9360128 DOI: 10.1007/s13346-022-01178-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2022] [Indexed: 11/12/2022]
Abstract
Due to their unique chemical and physical properties, nanobiomaterials (NBMs) are extensively studied for applications in medicine and drug delivery. Despite these exciting properties, their small sizes also make them susceptible to toxicity. Whilst nanomaterial immunotoxicity and cytotoxicity are studied in great depth, there is still limited data on their potential genotoxicity or ability to cause DNA damage. In the past years, new medical device regulations, which came into place in 2020, were developed, which require the assessment of long-term NBM exposure; therefore, in recent years, increased attention is being paid to genotoxicity screening of these materials. In this article, and through an interlaboratory comparison (ILC) study conducted within the Horizon 2020 REFINE project, we assess five different NBM formulations, each with different uses, namely, a bio-persistent gold nanoparticle (AuNP), an IR-780 dye-loaded liposome which is used in deep tissue imaging (LipImage™815), an unloaded PACA polymeric nanoparticle used as a drug delivery system (PACA), and two loaded PACA NBMs, i.e. the cabazitaxel drug-loaded PACA (CBZ-PACA) and the NR668 dye-loaded PACA (NR668 PACA) for their potential to cause DNA strand breaks using the alkaline comet assay and discuss the current state of genotoxicity testing for nanomaterials. We have found through our interlaboratory comparison that the alkaline comet assay can be suitably applied to the pre-clinical assessment of NBMs, as a reproducible and repeatable methodology for assessing NBM-induced DNA damage.
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Genotoxicity of Graphene-Based Materials. NANOMATERIALS 2022; 12:nano12111795. [PMID: 35683650 PMCID: PMC9182450 DOI: 10.3390/nano12111795] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 01/27/2023]
Abstract
Graphene-based materials (GBMs) are a broad family of novel carbon-based nanomaterials with many nanotechnology applications. The increasing market of GBMs raises concerns on their possible impact on human health. Here, we review the existing literature on the genotoxic potential of GBMs over the last ten years. A total of 50 articles including in vitro, in vivo, in silico, and human biomonitoring studies were selected. Graphene oxides were the most analyzed materials, followed by reduced graphene oxides. Most of the evaluations were performed in vitro using the comet assay (detecting DNA damage). The micronucleus assay (detecting chromosome damage) was the most used validated assay, whereas only two publications reported results on mammalian gene mutations. The same material was rarely assessed with more than one assay. Despite inhalation being the main exposure route in occupational settings, only one in vivo study used intratracheal instillation, and another one reported human biomonitoring data. Based on the studies, some GBMs have the potential to induce genetic damage, although the type of damage depends on the material. The broad variability of GBMs, cellular systems and methods used in the studies precludes the identification of physico-chemical properties that could drive the genotoxicity response to GBMs.
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22
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Verdon R, Stone V, Murphy F, Christopher E, Johnston H, Doak S, Vogel U, Haase A, Kermanizadeh A. The application of existing genotoxicity methodologies for grouping of nanomaterials: towards an integrated approach to testing and assessment. Part Fibre Toxicol 2022; 19:32. [PMID: 35525968 PMCID: PMC9080165 DOI: 10.1186/s12989-022-00476-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 01/21/2022] [Indexed: 02/01/2023] Open
Abstract
The incorporation of nanomaterials (NMs) in consumer products has proven to be highly valuable in many sectors. Unfortunately, however, the same nano specific physicochemical properties, which make these material attractive, might also contribute to hazards for people exposed to these materials. The physicochemical properties of NMs will impact their interaction with biological surroundings and influence their fate and their potential adverse effects such as genotoxicity. Due to the large and expanding number of NMs produced, their availability in different nanoforms (NFs) and their utilization in various formats, it is impossible for risk assessment to be conducted on an individual NF basis. Alternative methods, such as grouping are needed for streamlining hazard assessment. The GRACIOUS Framework provides a logical and science evidenced approach to group similar NFs, allowing read-across of hazard information from source NFs (or non-NFs) with adequate hazard data to target NFs that lack such data. Here, we propose a simple three-tiered testing strategy to gather evidence to determine whether different NFs are sufficiently similar with respect to their potential to induce genotoxicity, in order to be grouped. The tiered testing strategy includes simple in vitro models as well as a number of alternative more complex multi-cellular in vitro models to allow for a better understanding of secondary NM-induced DNA damage, something that has been more appropriate in vivo until recently.
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Affiliation(s)
- Rachel Verdon
- Nano Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | - Vicki Stone
- Nano Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | - Fiona Murphy
- Nano Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | | | - Helinor Johnston
- Nano Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | - Shareen Doak
- Institute of Life Science, Swansea University Medical School, Swansea, UK
| | - Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Andrea Haase
- Department of Chemicals and Product Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Ali Kermanizadeh
- Human Sciences Research Centre, University of Derby, Derby, DE22 1GB, UK.
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Lim HK, Hughes CO, Lim MJS, Li JJ, Rakshit M, Yeo C, Chng KR, Li A, Chan JSH, Ng KW, Leavesley DI, Smith BPC. Development of reconstructed intestinal micronucleus cytome (RICyt) assay in 3D human gut model for genotoxicity assessment of orally ingested substances. Arch Toxicol 2022; 96:1455-1471. [PMID: 35226136 PMCID: PMC9013689 DOI: 10.1007/s00204-022-03228-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 01/12/2022] [Indexed: 11/30/2022]
Abstract
The micronucleus (MN) assay is widely used as part of a battery of tests applied to evaluate the genotoxic potential of chemicals, including new food additives and novel food ingredients. Micronucleus assays typically utilise homogenous in vitro cell lines which poorly recapitulate the physiology, biochemistry and genomic events in the gut, the site of first contact for ingested materials. Here we have adapted and validated the MN endpoint assay protocol for use with complex 3D reconstructed intestinal microtissues; we have named this new protocol the reconstructed intestine micronucleus cytome (RICyt) assay. Our data suggest the commercial 3D microtissues replicate the physiological, biochemical and genomic responses of native human small intestine to exogenous compounds. Tissues were shown to maintain log-phase proliferation throughout the period of exposure and expressed low background MN. Analysis using the RICyt assay protocol revealed the presence of diverse cell types and nuclear anomalies (cytome) in addition to MN, indicating evidence for comprehensive DNA damage and mode(s) of cell death reported by the assay. The assay correctly identified and discriminated direct-acting clastogen, aneugen and clastogen requiring exogenous metabolic activation, and a non-genotoxic chemical. We are confident that the genotoxic response in the 3D microtissues more closely resembles the native tissues due to the inherent tissue architecture, surface area, barrier effects and tissue matrix interactions. This proof-of-concept study highlights the RICyt MN cytome assay in 3D reconstructed intestinal microtissues is a promising tool for applications in predictive toxicology.
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Affiliation(s)
- Hui Kheng Lim
- Innovations in Food and Chemical Safety (IFCS) Programme, Agency for Science, Technology and Research, Singapore, Singapore.
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research, Singapore, Singapore.
- Future Ready Food Safety Hub (a Joint Initiative of A*STAR, SFA and NTU), Nanyang Technological University, Singapore, Singapore.
| | - Christopher Owen Hughes
- Innovations in Food and Chemical Safety (IFCS) Programme, Agency for Science, Technology and Research, Singapore, Singapore
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research, Singapore, Singapore
| | - Michelle Jing Sin Lim
- Innovations in Food and Chemical Safety (IFCS) Programme, Agency for Science, Technology and Research, Singapore, Singapore
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research, Singapore, Singapore
| | - Jia'En Jasmine Li
- National Centre for Food Science, Singapore Food Agency, Singapore, Singapore
| | - Moumita Rakshit
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Calvin Yeo
- National Centre for Food Science, Singapore Food Agency, Singapore, Singapore
| | - Kern Rei Chng
- National Centre for Food Science, Singapore Food Agency, Singapore, Singapore
| | - Angela Li
- National Centre for Food Science, Singapore Food Agency, Singapore, Singapore
| | | | - Kee Woei Ng
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
- Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, Singapore, Singapore
- Harvard T. H. Chan School of Public Health, Harvard University, Cambridge, USA
| | - David Ian Leavesley
- Innovations in Food and Chemical Safety (IFCS) Programme, Agency for Science, Technology and Research, Singapore, Singapore
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research, Singapore, Singapore
| | - Benjamin Paul Chapman Smith
- Innovations in Food and Chemical Safety (IFCS) Programme, Agency for Science, Technology and Research, Singapore, Singapore
- Future Ready Food Safety Hub (a Joint Initiative of A*STAR, SFA and NTU), Nanyang Technological University, Singapore, Singapore
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research, Singapore, Singapore
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Alijagic A, Engwall M, Särndahl E, Karlsson H, Hedbrant A, Andersson L, Karlsson P, Dalemo M, Scherbak N, Färnlund K, Larsson M, Persson A. Particle Safety Assessment in Additive Manufacturing: From Exposure Risks to Advanced Toxicology Testing. FRONTIERS IN TOXICOLOGY 2022; 4:836447. [PMID: 35548681 PMCID: PMC9081788 DOI: 10.3389/ftox.2022.836447] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 04/06/2022] [Indexed: 11/13/2022] Open
Abstract
Additive manufacturing (AM) or industrial three-dimensional (3D) printing drives a new spectrum of design and production possibilities; pushing the boundaries both in the application by production of sophisticated products as well as the development of next-generation materials. AM technologies apply a diversity of feedstocks, including plastic, metallic, and ceramic particle powders with distinct size, shape, and surface chemistry. In addition, powders are often reused, which may change the particles' physicochemical properties and by that alter their toxic potential. The AM production technology commonly relies on a laser or electron beam to selectively melt or sinter particle powders. Large energy input on feedstock powders generates several byproducts, including varying amounts of virgin microparticles, nanoparticles, spatter, and volatile chemicals that are emitted in the working environment; throughout the production and processing phases. The micro and nanoscale size may enable particles to interact with and to cross biological barriers, which could, in turn, give rise to unexpected adverse outcomes, including inflammation, oxidative stress, activation of signaling pathways, genotoxicity, and carcinogenicity. Another important aspect of AM-associated risks is emission/leakage of mono- and oligomers due to polymer breakdown and high temperature transformation of chemicals from polymeric particles, both during production, use, and in vivo, including in target cells. These chemicals are potential inducers of direct toxicity, genotoxicity, and endocrine disruption. Nevertheless, understanding whether AM particle powders and their byproducts may exert adverse effects in humans is largely lacking and urges comprehensive safety assessment across the entire AM lifecycle-spanning from virgin and reused to airborne particles. Therefore, this review will detail: 1) brief overview of the AM feedstock powders, impact of reuse on particle physicochemical properties, main exposure pathways and protective measures in AM industry, 2) role of particle biological identity and key toxicological endpoints in the particle safety assessment, and 3) next-generation toxicology approaches in nanosafety for safety assessment in AM. Altogether, the proposed testing approach will enable a deeper understanding of existing and emerging particle and chemical safety challenges and provide a strategy for the development of cutting-edge methodologies for hazard identification and risk assessment in the AM industry.
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Affiliation(s)
- Andi Alijagic
- Man-Technology-Environment Research Center (MTM), Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Magnus Engwall
- Man-Technology-Environment Research Center (MTM), Örebro University, Örebro, Sweden
| | - Eva Särndahl
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Helen Karlsson
- Department of Health, Medicine and Caring Sciences, Occupational and Environmental Medicine Center in Linköping, Linköping University, Linköping, Sweden
| | - Alexander Hedbrant
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Lena Andersson
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Department of Occupational and Environmental Medicine, Örebro University, Örebro, Sweden
| | - Patrik Karlsson
- Department of Mechanical Engineering, Örebro University, Örebro, Sweden
| | | | - Nikolai Scherbak
- Man-Technology-Environment Research Center (MTM), Örebro University, Örebro, Sweden
| | | | - Maria Larsson
- Man-Technology-Environment Research Center (MTM), Örebro University, Örebro, Sweden
| | - Alexander Persson
- Inflammatory Response and Infection Susceptibility Centre (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
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25
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Cebadero-Domínguez Ó, Jos A, Cameán AM, Cătunescu GM. Hazard characterization of graphene nanomaterials in the frame of their food risk assessment: A review. Food Chem Toxicol 2022; 164:113014. [PMID: 35430331 DOI: 10.1016/j.fct.2022.113014] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/04/2022] [Accepted: 04/11/2022] [Indexed: 12/11/2022]
Abstract
Different applications have been suggested for graphene nanomaterials (GFNs) in the food and feed chain. However, it is necessary to perform a risk assessment before they become market-ready, and when consumer exposure is demonstrated. For this purpose, the European Food Safety Authority (EFSA) has published a guidance that has been recently updated. In this sense, the aim of this study is to identify and characterise toxicological hazards related to GFNs after oral exposure. Thus, existing scientific literature in relation to in vitro degradation studies, in vitro and in vivo genotoxicity, toxicokinetics data, in vivo oral studies, and other in-depth studies such as effects on the microbiome has been revised. The obtained results showed that the investigations performed up to now did not follow internationally agreed-upon test guidelines. Moreover, GFNs seemed to resist gastrointestinal digestion and were able to be absorbed, distributed, and excreted, inducing toxic effects at different levels, including genotoxicity. Also, dose has an important role as it has been reported that low doses are more toxic than high doses because GFNs tend to aggregate in the digestive system, changing the internal exposure scenario. Thus, further studies including a thorough toxicological evaluation are required to protect consumer's safety.
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Affiliation(s)
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Spain.
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, Universidad de Sevilla, Spain
| | - Giorgiana M Cătunescu
- University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3-5, 400372, Cluj-Napoca, Romania
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26
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Meldrum K, Evans SJ, Vogel U, Tran L, Doak SH, Clift MJD. The influence of exposure approaches to in vitro lung epithelial barrier models to assess engineered nanomaterial hazard. Nanotoxicology 2022; 16:114-134. [PMID: 35343373 DOI: 10.1080/17435390.2022.2051627] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Exposure to engineered nanomaterials (ENM) poses a potential health risk to humans through long-term, repetitive low-dose exposures. Currently, this is not commonplace within in vitro lung cell cultures. Therefore, the purpose of this study was to consider the optimal exposure approach toward determining the stability, sensitivity and validity of using in vitro lung cell mono- and co-cultures to determine ENM hazard. A range of exposure scenarios were conducted with DQ12 (previously established as a positive particle control) (historic and re-activated), TiO2 (JRC NM-105) and BaSO4 (JRC NM-220) on both monocultures of A549 cells as well as co-cultures of A549 cells and differentiated THP-1 cells. Cell cultures were exposed to either a single, or a repeated exposure over 24, 48- or 72-hours at in vivo extrapolated concentrations of 0-5.2 µg/cm2, 0-6 µg/cm2 and 0-1µg/cm2. The focus of this study was the pro-inflammatory, cytotoxic and genotoxic response elicited by these ENMs. Exposure to DQ12 caused pro-inflammatory responses after 48 hours repeat exposures, as well as increases in micronucleus frequency. Neither TiO2 nor BaSO4 elicited a pro-inflammatory response at this time point. However, there was induction of IL-6 after 24 hours TiO2 exposure. In conclusion, it is important to consider the appropriateness of the positive control implemented, the cell culture model, the time of exposure as well as the type of exposure (bolus or fractionated) before establishing if an in vitro model is appropriate to determine the level of response to the specific ENM of interest.
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Affiliation(s)
- Kirsty Meldrum
- In Vitro Toxicology Group, Swansea University, Swansea, UK
| | | | - Ulla Vogel
- The National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Lang Tran
- Institute of Occupational Medicine (IOM), Edinburgh, UK
| | - Shareen H Doak
- In Vitro Toxicology Group, Swansea University, Swansea, UK
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27
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In Vitro Genotoxicity Evaluation of an Antiseptic Formulation Containing Kaolin and Silver Nanoparticles. NANOMATERIALS 2022; 12:nano12060914. [PMID: 35335725 PMCID: PMC8948953 DOI: 10.3390/nano12060914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 02/06/2023]
Abstract
Worldwide antimicrobial resistance is partly caused by the overuse of antibiotics as growth promoters. Based on the known bactericidal effect of silver, a new material containing silver in a clay base was developed to be used as feed additive. An in vitro genotoxicity evaluation of this silver-kaolin clay formulation was conducted, which included the mouse lymphoma assay in L5178Y TK+/− cells and the micronucleus test in TK6 cells, following the principles of the OECD guidelines 490 and 487, respectively. As a complement, the standard and Fpg-modified comet assays for the evaluation of strand breaks, alkali labile sites and oxidative DNA damage were also performed in TK6 cells. The formulation was tested without metabolic activation after an exposure of 3 h and 24 h; its corresponding release in medium, after the continuous agitation of the silver-kaolin for 24 h was also evaluated. Under the conditions tested, the test compound did not produce gene mutations, chromosomal aberrations or DNA damage (i.e., strand breaks, alkali labile sites or oxidized bases). Considering the results obtained in the present study, the formulation seems to be a promising material to be used as antimicrobial in animal feed.
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28
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Duraisamy SS, Vijayakumar N, Rajendran J, Venkatesan A, Kartha B, Kandasamy SP, Nicoletti M, Alharbi NS, Kadaikunnan S, Khaled JM, Govindarajan M. Facile synthesis of silver nanoparticles using the Simarouba glauca leaf extract and their impact on biological outcomes: A novel perspective for nano-drug development. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hwang J, Mros S, Gamble AB, Tyndall JDA, McDowell A. Improving Antibacterial Activity of a HtrA Protease Inhibitor JO146 against Helicobacter pylori: A Novel Approach Using Microfluidics-Engineered PLGA Nanoparticles. Pharmaceutics 2022; 14:pharmaceutics14020348. [PMID: 35214080 PMCID: PMC8875321 DOI: 10.3390/pharmaceutics14020348] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/24/2022] [Accepted: 01/29/2022] [Indexed: 11/16/2022] Open
Abstract
Nanoparticle drug delivery systems have emerged as a promising strategy for overcoming limitations of antimicrobial drugs such as stability, bioavailability, and insufficient exposure to the hard-to-reach bacterial drug targets. Although size is a vital colloidal feature of nanoparticles that governs biological interactions, the absence of well-defined size control technology has hampered the investigation of optimal nanoparticle size for targeting bacterial cells. Previously, we identified a lead antichlamydial compound JO146 against the high temperature requirement A (HtrA) protease, a promising antibacterial target involved in protein quality control and virulence. Here, we reveal that JO146 was active against Helicobacter pylori with a minimum bactericidal concentration of 18.8–75.2 µg/mL. Microfluidic technology using a design of experiments approach was utilized to formulate JO146-loaded poly(lactic-co-glycolic) acid nanoparticles and explore the effect of the nanoparticle size on drug delivery. JO146-loaded nanoparticles of three different sizes (90, 150, and 220 nm) were formulated with uniform particle size distribution and drug encapsulation efficiency of up to 25%. In in vitro microdilution inhibition assays, 90 nm nanoparticles improved the minimum bactericidal concentration of JO146 two-fold against H. pylori compared to the free drug alone, highlighting that controlled engineering of nanoparticle size is important in drug delivery optimization.
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Affiliation(s)
- Jimin Hwang
- School of Pharmacy, University of Otago, Dunedin 9054, New Zealand; (J.H.); (A.B.G.); (J.D.A.T.)
| | - Sonya Mros
- Department of Microbiology and Immunology, University of Otago, Dunedin 9054, New Zealand;
| | - Allan B. Gamble
- School of Pharmacy, University of Otago, Dunedin 9054, New Zealand; (J.H.); (A.B.G.); (J.D.A.T.)
| | - Joel D. A. Tyndall
- School of Pharmacy, University of Otago, Dunedin 9054, New Zealand; (J.H.); (A.B.G.); (J.D.A.T.)
| | - Arlene McDowell
- School of Pharmacy, University of Otago, Dunedin 9054, New Zealand; (J.H.); (A.B.G.); (J.D.A.T.)
- Correspondence:
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Achawi S, Huot L, Nesslany F, Pourchez J, Simar S, Forest V, Feneon B. Exploring graphene-based materials' genotoxicity: inputs of a screening method. Nanotoxicology 2022; 15:1279-1294. [PMID: 35026124 DOI: 10.1080/17435390.2021.2018734] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Graphene-based materials (GBMs) are promising nanomaterials, and several innovations depend on their use. However, the assessment of their potential hazard must be carefully explored before entering any market. GBMs are indeed well-known to induce various biological impacts, including oxidative stress, which can potentially lead to DNA damage. Genotoxicity is a major endpoint for hazard assessment and has been explored for GBMs, but the available literature shows conflicting results. In this study, we assessed the genotoxicity of 13 various GBMs, one carbon black and one amorphous silica through a DNA damage response assay (using a human respiratory cell model, BEAS-2B). Concurrently, oxidative stress was assessed through a ROS production quantification (DCFH-DA assay using a murine macrophage model, RAW 264.7). We also performed a full physicochemical characterization of our samples to explore potential structure-activity relationships involving genotoxicity. We observed that surface oxidation appears linked to genotoxicity response and were able to distinguish several groups within our studied GBMs showing different genotoxicity results. Our findings highlight the necessity to individually consider each nanoform of GBMs since the tested samples showed various results and modes of action. We propose this study as a genotoxicity assessment using a high-throughput screening method and suggest few hypotheses concerning the genotoxicity mode of action of GBMs.
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Affiliation(s)
- Salma Achawi
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, Etablissement Français du Sang, INSERM, Sainbiose, France Saint-Etienne.,Manufacture Française des Pneumatiques Michelin, Michelin, France
| | - Ludovic Huot
- Genotoxicology Department, Institut Pasteur de Lille, Lille, France
| | - Fabrice Nesslany
- Genotoxicology Department, Institut Pasteur de Lille, Lille, France
| | - Jérémie Pourchez
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, Etablissement Français du Sang, INSERM, Sainbiose, France Saint-Etienne
| | - Sophie Simar
- Genotoxicology Department, Institut Pasteur de Lille, Lille, France
| | - Valérie Forest
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, Etablissement Français du Sang, INSERM, Sainbiose, France Saint-Etienne
| | - Bruno Feneon
- Manufacture Française des Pneumatiques Michelin, Michelin, France
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Fakhardo A, Anastasova E, Makarov V, Ikonnikova EV, Kulko E, Nicole A, Yakunina M, Shkodenko L, Tsvetikova SA, Toropko M, Koshel EI, Zakharov M, Alexandrov G, Khuttunen O, Kulikov P, Burmistrov O, Vinogradov VV, Prilepskii AY. Heparin-coated iron oxide nanoparticles: application as liver contrast agent, toxicity and pharmacokinetics. J Mater Chem B 2022; 10:7797-7807. [DOI: 10.1039/d2tb00759b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The newly prepared heparin-coated iron oxide nanoparticles (Hep-IONPs) contrasted cholangioma tumors in the liver in T2 MRI. NPs were not toxic to rats and rabbits after 14 days of consecutive...
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Hazard Assessment of Benchmark Metal-Based Nanomaterials Through a Set of In Vitro Genotoxicity Assays. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1357:351-375. [DOI: 10.1007/978-3-030-88071-2_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Martin LMA, Gan N, Wang E, Merrill M, Xu W. Materials, surfaces, and interfacial phenomena in nanoplastics toxicology research. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118442. [PMID: 34748888 PMCID: PMC8823333 DOI: 10.1016/j.envpol.2021.118442] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/08/2021] [Accepted: 10/28/2021] [Indexed: 05/22/2023]
Abstract
In response to the growing worldwide plastic pollution problem, the field of nanoplastics research is attempting to determine the risk of exposure to nanoparticles amidst their ever-increasing presence in the environment. Since little is known about the attributes of environmental nanoplastics (concentration, composition, morphology, and size) due to fundamental limitations in detection and quantification of smaller plastic particles, researchers often improvise by engineering nanoplastic particles with various surface modifications as models for laboratory toxicological testing. Polystyrene and other commercially available or easily synthesized polymer materials functionalized with surfactants or fluorophores are typically used for these studies. How surfactants, additives, fluorophores, the addition of surface functional groups for conjugation, or other changes to surface attributes alter toxicological profiles remains unclear. Additionally, the limited polymers used in laboratory models do not mimic the vast range of polymer types comprising environmental pollutants. Nanomaterials are tricky materials to investigate due to their high surface area, high surface energies, and their propensity to interact with molecules, proteins, and biological probes. These unique properties can often invalidate common laboratory assays. Extreme care must be taken to ensure that results are not artefactual. We have gathered zeta potential values for various polystyrene nanoparticles with different functionalization, in different solvents, from the reported literature. We also discuss the effects of surface engineering and solvent properties on interparticle interactions, agglomeration, particle-protein interactions, corona formation, nano-bio interfaces, and contemplate how these parameters might confound results. Various toxicological exemplars are critically reviewed, and the relevance and shortfalls of the most popular models used in nanoplastics toxicity studies published in the current literature are considered.
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Affiliation(s)
- Leisha M A Martin
- Department of Life Sciences, Texas A&M University, Corpus Christi, TX, United States
| | - Nin Gan
- Department of Life Sciences, Texas A&M University, Corpus Christi, TX, United States
| | - Erica Wang
- Department of Mechanical Engineering, Texas A&M University, Corpus Christi, TX, United States
| | - Mackenzie Merrill
- Department of Life Sciences, Texas A&M University, Corpus Christi, TX, United States
| | - Wei Xu
- Department of Life Sciences, Texas A&M University, Corpus Christi, TX, United States.
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Shi J, Han S, Zhang J, Liu Y, Chen Z, Jia G. Advances in genotoxicity of titanium dioxide nanoparticles in vivo and in vitro. NANOIMPACT 2022; 25:100377. [PMID: 35559883 DOI: 10.1016/j.impact.2021.100377] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 11/24/2021] [Accepted: 12/10/2021] [Indexed: 06/15/2023]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) are currently one of the most widely used nanomaterials. Due to an increasing scope of applications, the exposure of humans to TiO2 NP is inevitable, such as entering the body through the mouth with food additives or drugs, invading the damaged skin with cosmetics, and entering the body through the respiratory tract during the process of production and handling. Compared with TiO2 coarse particles, TiO2 NPs have stronger conductivity, reaction activity, photocatalysis, and permeability, which may lead to greater toxicity to organisms. Given that TiO2 was classified as a category 2B carcinogen (possibly carcinogenic to humans), the genotoxicity of TiO2 NPs has become the focus of attention. There have been a series of previous studies investigating the potential genotoxicity of TiO2 NPs, but the existing research results are still controversial and difficult to conclude. More than half of studies have shown that TiO2 NPs can cause genotoxicity, suggesting that TiO2 NPs are likely to be genotoxic to humans. And the genotoxicity of TiO2 NPs is closely related to the exposure concentration, mode and time, and experimental cells/animals as well as its physicochemical properties (crystal type, size, and shape). This review summarized the latest research progress of related genotoxic effects through in vivo studies and in vitro cell tests, hoping to provide ideas for the evaluation of TiO2 NPs genotoxicity.
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Affiliation(s)
- Jiaqi Shi
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing 100191, PR China
| | - Shuo Han
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing 100191, PR China
| | - Jiahe Zhang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing 100191, PR China
| | - Ying Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, PR China
| | - Zhangjian Chen
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing 100191, PR China.
| | - Guang Jia
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing 100191, PR China
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Groff K, Evans SJ, Doak SH, Pfuhler S, Corvi R, Saunders S, Stoddart G. In vitro and integrated in vivo strategies to reduce animal use in genotoxicity testing. Mutagenesis 2021; 36:389-400. [PMID: 34555171 DOI: 10.1093/mutage/geab035] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/17/2021] [Indexed: 11/13/2022] Open
Abstract
Scientific, financial, and ethical drivers have led to unprecedented interest in implementing human-relevant, mechanistic in vitro and in silico testing approaches. Further, as non-animal approaches are being developed and validated, researchers are interested in strategies that can immediately reduce the use of animals in toxicology testing. Here, we aim to outline a testing strategy for assessing genotoxicity beginning with standard in vitro methods, such as the bacterial reverse mutation test and the in vitro micronucleus test, followed by a second tier of in vitro assays including those using advanced 3D tissue models. Where regulatory agencies require in vivo testing, one demonstrated strategy is to combine genotoxicity studies traditionally conducted separately into a single test or to integrate genotoxicity studies into other toxicity studies. Standard setting organisations and regulatory agencies have encouraged such strategies, and examples of their use can be found in the scientific literature. Employing approaches outlined here will reduce animal use as well as study time and costs.
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Affiliation(s)
- Katherine Groff
- PETA Science Consortium International e.V., Stuttgart, Germany
| | | | | | | | - Raffaella Corvi
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | | | - Gilly Stoddart
- PETA Science Consortium International e.V., Stuttgart, Germany
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In vitro investigation of zinc oxide nanoparticle toxic effects in spermatogonial cells at the molecular level. Chem Biol Interact 2021; 351:109687. [PMID: 34653396 DOI: 10.1016/j.cbi.2021.109687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/18/2021] [Accepted: 10/05/2021] [Indexed: 11/20/2022]
Abstract
Because spermatogonia transmit genetic information across generations, their DNA must be protected from environmental damages, including exposure to zinc oxide nanoparticles (ZnO NPs), which are frequently used in modern technology. Here, we used an in vitro system enriched for spermatogonia and exposed them to 10 and 20 μg/ml ZnO NPs for one/seven days. We did not detect any significant cell death, chromosomal instability, or DNA fragmentation in the spermatogonia treated with the ZnO NPs following one-day treatment with 10 or 20 μg/ml ZnO NPs. However, ZnO NPs (both 10 and 20 μg/ml) induced chromosomal instability in the spermatogonia after seven days of treatment. Moreover, one-day exposure to these NPs induced reactive oxygen species (ROS) generation and upregulation of apoptotic pathway-related genes p53, Caspase3 and Il6, as an inflammatory factor. Taken together, our study provides preliminary evidence for possible damages induced by low concentrations of ZnO NPs in spermatogonia. We should pay increased attention when using these NPs because of the silent damages in spermatogonia that can be transmitted to the next generation and cause severe effects. However, more data and validation of these results are required to determine the extent of this concern.
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Tirumala MG, Anchi P, Raja S, Rachamalla M, Godugu C. Novel Methods and Approaches for Safety Evaluation of Nanoparticle Formulations: A Focus Towards In Vitro Models and Adverse Outcome Pathways. Front Pharmacol 2021; 12:612659. [PMID: 34566630 PMCID: PMC8458898 DOI: 10.3389/fphar.2021.612659] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 08/05/2021] [Indexed: 12/18/2022] Open
Abstract
Nanotoxicology is an emerging field employed in the assessment of unintentional hazardous effects produced by nanoparticles (NPs) impacting human health and the environment. The nanotoxicity affects the range between induction of cellular stress and cytotoxicity. The reasons so far reported for these toxicological effects are due to their variable sizes with high surface areas, shape, charge, and physicochemical properties, which upon interaction with the biological components may influence their functioning and result in adverse outcomes (AO). Thus, understanding the risk produced by these materials now is an important safety concern for the development of nanotechnology and nanomedicine. Since the time nanotoxicology has evolved, the methods employed have been majorly relied on in vitro cell-based evaluations, while these simple methods may not predict the complexity involved in preclinical and clinical conditions concerning pharmacokinetics, organ toxicity, and toxicities evidenced through multiple cellular levels. The safety profiles of nanoscale nanomaterials and nanoformulations in the delivery of drugs and therapeutic applications are of considerable concern. In addition, the safety assessment for new nanomedicine formulas lacks regulatory standards. Though the in vivo studies are greatly needed, the end parameters used for risk assessment are not predicting the possible toxic effects produced by various nanoformulations. On the other side, due to increased restrictions on animal usage and demand for the need for high-throughput assays, there is a need for developing and exploring novel methods to evaluate NPs safety concerns. The progress made in molecular biology and the availability of several modern techniques may offer novel and innovative methods to evaluate the toxicological behavior of different NPs by using single cells, cell population, and whole organisms. This review highlights the recent novel methods developed for the evaluation of the safety impacts of NPs and attempts to solve the problems that come with risk assessment. The relevance of investigating adverse outcome pathways (AOPs) in nanotoxicology has been stressed in particular.
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Affiliation(s)
- Mounika Gayathri Tirumala
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Pratibha Anchi
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Susmitha Raja
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Mahesh Rachamalla
- Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
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Cypriyana P J J, S S, Angalene J LA, Samrot AV, Kumar S S, Ponniah P, Chakravarthi S. Overview on toxicity of nanoparticles, it's mechanism, models used in toxicity studies and disposal methods – A review. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102117] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Suitability of the In Vitro Cytokinesis-Block Micronucleus Test for Genotoxicity Assessment of TiO 2 Nanoparticles on SH-SY5Y Cells. Int J Mol Sci 2021; 22:ijms22168558. [PMID: 34445265 PMCID: PMC8395234 DOI: 10.3390/ijms22168558] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 07/13/2021] [Accepted: 08/03/2021] [Indexed: 11/17/2022] Open
Abstract
Standard toxicity tests might not be fully adequate for evaluating nanomaterials since their unique features are also responsible for unexpected interactions. The in vitro cytokinesis-block micronucleus (CBMN) test is recommended for genotoxicity testing, but cytochalasin-B (Cyt-B) may interfere with nanoparticles (NP), leading to inaccurate results. Our objective was to determine whether Cyt-B could interfere with MN induction by TiO2 NP in human SH-SY5Y cells, as assessed by CBMN test. Cells were treated for 6 or 24 h, according to three treatment options: co-treatment with Cyt-B, post-treatment, and delayed co-treatment. Influence of Cyt-B on TiO2 NP cellular uptake and MN induction as evaluated by flow cytometry (FCMN) were also assessed. TiO2 NP were significantly internalized by cells, both in the absence and presence of Cyt-B, indicating that this chemical does not interfere with NP uptake. Dose-dependent increases in MN rates were observed in CBMN test after co-treatment. However, FCMN assay only showed a positive response when Cyt-B was added simultaneously with TiO2 NP, suggesting that Cyt-B might alter CBMN assay results. No differences were observed in the comparisons between the treatment options assessed, suggesting they are not adequate alternatives to avoid Cyt-B interference in the specific conditions tested.
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40
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EFSA Scientific Committee, More S, Bampidis V, Benford D, Bragard C, Halldorsson T, Hernández‐Jerez A, Hougaard Bennekou S, Koutsoumanis K, Lambré C, Machera K, Naegeli H, Nielsen S, Schlatter J, Schrenk D, Silano (deceased) V, Turck D, Younes M, Castenmiller J, Chaudhry Q, Cubadda F, Franz R, Gott D, Mast J, Mortensen A, Oomen AG, Weigel S, Barthelemy E, Rincon A, Tarazona J, Schoonjans R. Guidance on risk assessment of nanomaterials to be applied in the food and feed chain: human and animal health. EFSA J 2021; 19:e06768. [PMID: 34377190 PMCID: PMC8331059 DOI: 10.2903/j.efsa.2021.6768] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2021] [Indexed: 02/08/2023] Open
Abstract
The EFSA has updated the Guidance on risk assessment of the application of nanoscience and nanotechnologies in the food and feed chain, human and animal health. It covers the application areas within EFSA's remit, including novel foods, food contact materials, food/feed additives and pesticides. The updated guidance, now Scientific Committee Guidance on nano risk assessment (SC Guidance on Nano-RA), has taken account of relevant scientific studies that provide insights to physico-chemical properties, exposure assessment and hazard characterisation of nanomaterials and areas of applicability. Together with the accompanying Guidance on Technical requirements for regulated food and feed product applications to establish the presence of small particles including nanoparticles (Guidance on Particle-TR), the SC Guidance on Nano-RA specifically elaborates on physico-chemical characterisation, key parameters that should be measured, methods and techniques that can be used for characterisation of nanomaterials and their determination in complex matrices. The SC Guidance on Nano-RA also details aspects relating to exposure assessment and hazard identification and characterisation. In particular, nanospecific considerations relating to in vitro/in vivo toxicological studies are discussed and a tiered framework for toxicological testing is outlined. Furthermore, in vitro degradation, toxicokinetics, genotoxicity, local and systemic toxicity as well as general issues relating to testing of nanomaterials are described. Depending on the initial tier results, additional studies may be needed to investigate reproductive and developmental toxicity, chronic toxicity and carcinogenicity, immunotoxicity and allergenicity, neurotoxicity, effects on gut microbiome and endocrine activity. The possible use of read-across to fill data gaps as well as the potential use of integrated testing strategies and the knowledge of modes or mechanisms of action are also discussed. The Guidance proposes approaches to risk characterisation and uncertainty analysis.
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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: 28] [Impact Index Per Article: 7.0] [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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Koedrith P, Rahman MM, Jang YJ, Shin DY, Seo YR. Nanoparticles: Weighing the Pros and Cons from an Eco-genotoxicological Perspective. J Cancer Prev 2021; 26:83-97. [PMID: 34258247 PMCID: PMC8249203 DOI: 10.15430/jcp.2021.26.2.83] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 06/08/2021] [Accepted: 06/16/2021] [Indexed: 12/06/2022] Open
Abstract
The exponential growth of nanotechnology and the industrial production have raised concerns over its impact on human and environmental health and safety (EHS). Although there has been substantial progress in the assessment of pristine nanoparticle toxicities, their EHS impacts require greater clarification. In this review, we discuss studies that have assessed nanoparticle eco-genotoxicity in different test systems and their fate in the environment as well as the considerable confounding factors that may complicate the results. We highlight key mechanisms of nanoparticle-mediated genotoxicity. Then we discuss the reliability of endpoint assays, such as the comet assay, the most favored assessment technique because of its versatility to measure low levels of DNA strand breakage, and the micronucleus assay, which is complementary to the former because of its greater ability to detect chromosomal DNA fragmentation. We also address the current recommendations on experimental design, including environmentally relevant concentrations and suitable exposure duration to avoid false-positive or -negative results. The genotoxicity of nanoparticles depends on their physicochemical features and the presence of co-pollutants. Thus, the effect of environmental processes (e.g., aggregation and agglomeration, adsorption, and transformation of nanoparticles) would account for when determining the actual genotoxicity relevant to environmental systems, and assay procedures must be standardized. Indeed, the engineered nanoparticles offer potential applications in different fields including biomedicine, environment, agriculture, and industry. Toxicological pathways and the potential risk factors related to genotoxic responses in biological organisms and environments need to be clarified before appropriate and sustainable applications of nanoparticles can be established.
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Affiliation(s)
- Preeyaporn Koedrith
- Institute of Environmental Medicine for Green Chemistry, Dongguk University Biomedi Campus, Goyang, Korea
- Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom, Thailand
| | - Md. Mujibur Rahman
- Institute of Environmental Medicine for Green Chemistry, Dongguk University Biomedi Campus, Goyang, Korea
| | - Yu Jin Jang
- Department of Life Science, Dongguk University Biomedi Campus, Goyang, Korea
| | - Dong Yeop Shin
- Department of Life Science, Dongguk University Biomedi Campus, Goyang, Korea
| | - Young Rok Seo
- Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom, Thailand
- Department of Life Science, Dongguk University Biomedi Campus, Goyang, Korea
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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: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [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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Brandão F, Costa C, Bessa MJ, Dumortier E, Debacq-Chainiaux F, Hubaux R, Salmon M, Laloy J, Stan MS, Hermenean A, Gharbia S, Dinischiotu A, Bannuscher A, Hellack B, Haase A, Fraga S, Teixeira JP. Genotoxicity and Gene Expression in the Rat Lung Tissue following Instillation and Inhalation of Different Variants of Amorphous Silica Nanomaterials (aSiO 2 NM). NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1502. [PMID: 34200147 PMCID: PMC8228975 DOI: 10.3390/nano11061502] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/27/2021] [Accepted: 06/03/2021] [Indexed: 12/15/2022]
Abstract
Several reports on amorphous silica nanomaterial (aSiO2 NM) toxicity have been questioning their safety. Herein, we investigated the in vivo pulmonary toxicity of four variants of aSiO2 NM: SiO2_15_Unmod, SiO2_15_Amino, SiO2_7 and SiO2_40. We focused on alterations in lung DNA and protein integrity, and gene expression following single intratracheal instillation in rats. Additionally, a short-term inhalation study (STIS) was carried out for SiO2_7, using TiO2_NM105 as a benchmark NM. In the instillation study, a significant but slight increase in oxidative DNA damage in rats exposed to the highest instilled dose (0.36 mg/rat) of SiO2_15_Amino was observed in the recovery (R) group. Exposure to SiO2_7 or SiO2_40 markedly increased oxidative DNA lesions in rat lung cells of the exposure (E) group at every tested dose. This damage seems to be repaired, since no changes compared to controls were observed in the R groups. In STIS, a significant increase in DNA strand breaks of the lung cells exposed to 0.5 mg/m3 of SiO2_7 or 50 mg/m3 of TiO2_NM105 was observed in both groups. The detected gene expression changes suggest that oxidative stress and/or inflammation pathways are likely implicated in the induction of (oxidative) DNA damage. Overall, all tested aSiO2 NM were not associated with marked in vivo toxicity following instillation or STIS. The genotoxicity findings for SiO2_7 from instillation and STIS are concordant; however, changes in STIS animals were more permanent/difficult to revert.
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Affiliation(s)
- Fátima Brandão
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 4050-600 Porto, Portugal; (F.B.); (C.C.); (M.J.B.); (J.P.T.)
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
- Environmental Health Department, National Institute of Health Dr. Ricardo Jorge, Rua Alexandre Herculano 321, 4000-053 Porto, Portugal
- ICBAS—Institute of Biomedical Sciences Abel Salazar, U. Porto—University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Carla Costa
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 4050-600 Porto, Portugal; (F.B.); (C.C.); (M.J.B.); (J.P.T.)
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
- Environmental Health Department, National Institute of Health Dr. Ricardo Jorge, Rua Alexandre Herculano 321, 4000-053 Porto, Portugal
| | - Maria João Bessa
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 4050-600 Porto, Portugal; (F.B.); (C.C.); (M.J.B.); (J.P.T.)
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
- Environmental Health Department, National Institute of Health Dr. Ricardo Jorge, Rua Alexandre Herculano 321, 4000-053 Porto, Portugal
- ICBAS—Institute of Biomedical Sciences Abel Salazar, U. Porto—University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Elise Dumortier
- Unité de Recherche en Biologie Cellulaire (URBC), Namur Research Institute for Life Sciences (Narilis), University of Namur, 5000 Namur, Belgium; (E.D.); (F.D.-C.)
| | - Florence Debacq-Chainiaux
- Unité de Recherche en Biologie Cellulaire (URBC), Namur Research Institute for Life Sciences (Narilis), University of Namur, 5000 Namur, Belgium; (E.D.); (F.D.-C.)
| | - Roland Hubaux
- StratiCELL Laboratories, Research and Development, 5032 Les Isnes, Belgium; (R.H.); (M.S.)
| | - Michel Salmon
- StratiCELL Laboratories, Research and Development, 5032 Les Isnes, Belgium; (R.H.); (M.S.)
| | - Julie Laloy
- Namur Nanosafety Centre, Department of Pharmacy, Namur Research Institute for Life Sciences (Narilis), University of Namur, 5000 Namur, Belgium;
| | - Miruna S. Stan
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania; (M.S.S.); (A.H.); (S.G.); (A.D.)
| | - Anca Hermenean
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania; (M.S.S.); (A.H.); (S.G.); (A.D.)
- “Aurel Ardelean” Institute of Life Sciences, “Vasile Goldis” Western University of Arad, 310414 Arad, Romania
| | - Sami Gharbia
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania; (M.S.S.); (A.H.); (S.G.); (A.D.)
- “Aurel Ardelean” Institute of Life Sciences, “Vasile Goldis” Western University of Arad, 310414 Arad, Romania
| | - Anca Dinischiotu
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania; (M.S.S.); (A.H.); (S.G.); (A.D.)
| | - Anne Bannuscher
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany; (A.B.); (A.H.)
- Adolphe Merkle Institute (AMI), University of Fribourg, 1700 Fribourg, Switzerland
| | - Bryan Hellack
- Institute of Energy and Environmental Technology (IUTA) e.V., 47229 Duisburg, Germany;
- German Environment Agency (UBA), 06844 Dessau-Roβlau, Germany
| | - Andrea Haase
- Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany; (A.B.); (A.H.)
| | - Sónia Fraga
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 4050-600 Porto, Portugal; (F.B.); (C.C.); (M.J.B.); (J.P.T.)
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
- Environmental Health Department, National Institute of Health Dr. Ricardo Jorge, Rua Alexandre Herculano 321, 4000-053 Porto, Portugal
| | - João Paulo Teixeira
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, 4050-600 Porto, Portugal; (F.B.); (C.C.); (M.J.B.); (J.P.T.)
- Laboratory for Integrative and Translational Research in Population Health (ITR), 4050-600 Porto, Portugal
- Environmental Health Department, National Institute of Health Dr. Ricardo Jorge, Rua Alexandre Herculano 321, 4000-053 Porto, Portugal
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Souza MR, Mazaro-Costa R, Rocha TL. Can nanomaterials induce reproductive toxicity in male mammals? A historical and critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 769:144354. [PMID: 33736249 DOI: 10.1016/j.scitotenv.2020.144354] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/06/2020] [Accepted: 12/05/2020] [Indexed: 05/28/2023]
Abstract
The nanotechnology enabled the development of nanomaterials (NMs) with a variety of industrial, biomedical, and consumer applications. However, the mechanism of action (MoA) and toxicity of NMs remain unclear, especially in the male reproductive system. Thus, this study aimed to perform a bibliometric and systematic review of the literature on the toxic effects of different types of NMs on the male reproductive system and function in mammalian models. A series of 236 articles related to the in vitro and in vivo reproductive toxicity of NMs in mammalian models were analyzed. The data concerning the bioaccumulation, experimental conditions (types of NMs, species, cell lines, exposure period, and routes of exposure), and the MoA and toxicity of NMs were summarized and discussed. Results showed that this field of research began in 2005 and has experienced an exponential increase since 2012. Revised data confirmed that the NMs have the ability to cross the blood-testis barrier and bioaccumulate in several organs of the male reproductive system, such as testis, prostate, epididymis, and seminal vesicle. A similar MoA and toxicity were observed after in vitro and in vivo exposure to NMs. The NM reproductive toxicity was mainly related to ROS production, oxidative stress, DNA damage and apoptosis. In conclusion, the NM exposure induces bioaccumulation and toxic effects on male reproductive system of mammal models, confirming its potential risk to human and environmental health. The knowledge concerning the NM reproductive toxicity contributes to safety and sustainable use of nanotechnology.
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Affiliation(s)
- Maingredy Rodrigues Souza
- Laboratory of Physiology and Pharmacology of Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiás, Brazil; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiás, Brazil
| | - Renata Mazaro-Costa
- Laboratory of Physiology and Pharmacology of Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiás, Brazil
| | - Thiago Lopes Rocha
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiás, Brazil.
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46
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Andreoli C, Prota V, De Angelis I, Facchini E, Zijno A, Meccia E, Barletta B, Butteroni C, Corinti S, Chatgilialoglu C, Krokidis MG, Masi A, Condello M, Meschini S, Di Felice G, Barone F. A harmonized and standardized in vitro approach produces reliable results on silver nanoparticles toxicity in different cell lines. J Appl Toxicol 2021; 41:1980-1997. [PMID: 33982300 DOI: 10.1002/jat.4178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/06/2021] [Accepted: 04/10/2021] [Indexed: 11/08/2022]
Abstract
Despite the widespread use of silver nanoparticles (AgNPs) in different fields and the amount of investigations available, to date, there are many contradictory results on their potential toxicity. In the present study, extensively characterized 20-nm AgNPs were investigated using optimized protocols and standardized methods to test several toxicological endpoints in different cell lines. The agglomeration/aggregation state of AgNPs in culture media was measured by dynamic light scattering (DLS). DNA and chromosomal damage on BEAS-2B and RAW 264.7 cells were evaluated by comet and micronucleus assays, while oxidative DNA damage by modified comet assay and 8-oxodG/8-oxodA detection. We also investigated immunotoxicity and immunomodulation by cytokine release and NO production in RAW 264.7 and MH-S cells, with or without lipopolysaccharide (LPS) stimulus. Transmission electron microscope (TEM) analysis was used to analyze cellular uptake of AgNPs. Our results indicate different values of AgNPs hydrodynamic diameter depending on the medium, some genotoxic effect just on BEAS-2B and no or slight effects on function of RAW 264.7 and MH-S in absence or presence of LPS stimulus. This study highlights the relevance of using optimized protocols and multiple endpoints to analyze the potential toxicity of AgNPs and to obtain reliable and comparable results.
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Affiliation(s)
- Cristina Andreoli
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Valentina Prota
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Isabella De Angelis
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Emiliano Facchini
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Andrea Zijno
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Ettore Meccia
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Bianca Barletta
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Cinzia Butteroni
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Silvia Corinti
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Chryssostomos Chatgilialoglu
- ISOF, Consiglio Nazionale delle Ricerche, Bologna, Italy.,Center for Advanced Technologies, Adam Mickiewicz University, Poznan, Poland
| | - Marios G Krokidis
- ISOF, Consiglio Nazionale delle Ricerche, Bologna, Italy.,Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Athens, Greece
| | - Annalisa Masi
- ISOF, Consiglio Nazionale delle Ricerche, Bologna, Italy.,Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Monterotondo, Italy
| | - Maria Condello
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Stefania Meschini
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Gabriella Di Felice
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Flavia Barone
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
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Guncum E, Bakirel T, Anlas C, Isiklan N, Ustun Alkan F, Charehsaz M, Aydin A. The screening of the safety profile of polymeric based amoxicillin nanoparticles in various test systems. Toxicol Lett 2021; 348:1-9. [PMID: 33984417 DOI: 10.1016/j.toxlet.2021.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/18/2021] [Accepted: 05/07/2021] [Indexed: 11/25/2022]
Abstract
Nanotechnology-based drugs show superiority over conventional medicines because of increased bioavailability, lower accumulation in non-target tissues, and improved therapeutic index with increased accumulation at target sites. However, it is important to be aware of possible problems related to the toxicity of these products, which have therapeutically superior properties. Accordingly, the present study was designed to investigate the safety profile of amoxicillin nanoparticles (AmxNPs) that we developed to increase the oral bioavailability of amoxicillin (Amx) in poultry. In the first part of the study, the genotoxicity potential of AmxNPs was evaluated using the Ames test and the in vitro comet assay. The results of Ames test showed that none of the tested concentrations of Amx and AmxNPs cause a significant increase in the revertant number of Salmonella typhimurium strains TA98, and TA100, either with or without metabolic activation. Similarly, the comet assay revealed that AmxNPs did not induce DNA damage at any of the concentrations used, whereas high-dose (200 μg/mL) of Amx caused a significant increase in the percentage of DNA in the tail. In the second part of the study, the toxicity potential of AmxNPs on broilers was investigated by measuring biochemical parameters. In vivo results demonstrated that AmxNps did not cause a significant change in biochemical parameters, whereas Amx increased ALT, glucose, and cholesterol levels at certain sampling times. The obtained findings suggest that AmxNPs could be a safe promising potential drug in drug delivery systems.
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Affiliation(s)
- Enes Guncum
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Kırıkkale University, Kırıkkale, Turkey.
| | - Tulay Bakirel
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Istanbul University- Cerrahpasa, Turkey.
| | - Ceren Anlas
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Istanbul University- Cerrahpasa, Turkey.
| | - Nuran Isiklan
- Department of Chemistry, Faculty of Science and Arts, Kırıkkale University, Kırıkkale, Turkey.
| | - Fulya Ustun Alkan
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Istanbul University- Cerrahpasa, Turkey.
| | - Mohammad Charehsaz
- Department of Toxicology, Faculty of Pharmacy, Yeditepe University, Istanbul, Turkey.
| | - Ahmet Aydin
- Department of Toxicology, Faculty of Pharmacy, Yeditepe University, Istanbul, Turkey.
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48
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Raja IS, Lee JH, Hong SW, Shin DM, Lee JH, Han DW. A critical review on genotoxicity potential of low dimensional nanomaterials. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124915. [PMID: 33422758 DOI: 10.1016/j.jhazmat.2020.124915] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
Low dimensional nanomaterials (LDNMs) have earned attention among researchers as they exhibit a larger surface area to volume and quantum confinement effect compared to high dimensional nanomaterials. LDNMs, including 0-D and 1-D, possess several beneficial biomedical properties such as bioimaging, sensor, cosmetic, drug delivery, and cancer tumors ablation. However, they threaten human beings with the adverse effects of cytotoxicity, carcinogenicity, and genotoxicity when exposed for a prolonged time in industry or laboratory. Among different toxicities, genotoxicity must be taken into consideration with utmost importance as they inherit DNA related disorders causing congenital disabilities and malignancy to human beings. Many researchers have performed NMs' genotoxicity using various cell lines and animal models and reported the effect on various physicochemical and biological factors. In the present work, we have compiled a comparative study on the genotoxicity of the same or different kinds of NMs. Notwithstanding, we have included the classification of genotoxicity, mechanism, assessment, and affecting factors. Further, we have highlighted the importance of studying the genotoxicity of LDNMs and signified the perceptions, future challenges, and possible directives in the field.
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Affiliation(s)
| | - Jong Ho Lee
- Daan Korea Corporation, Seoul 06252, South Korea
| | - Suck Won Hong
- Department of Cogno-Mechatronics Engineering, College of Nanoscience & Nanotechnology, Pusan National University, Busan 46241, South Korea
| | - Dong-Myeong Shin
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam 999077, Hong Kong
| | - Jong Hun Lee
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, South Korea.
| | - Dong-Wook Han
- BIO-IT Foundry Technology Institute, Pusan National University, Busan 46241, South Korea; Department of Cogno-Mechatronics Engineering, College of Nanoscience & Nanotechnology, Pusan National University, Busan 46241, South Korea.
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49
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Llewellyn SV, Niemeijer M, Nymark P, Moné MJ, van de Water B, Conway GE, Jenkins GJS, Doak SH. In Vitro Three-Dimensional Liver Models for Nanomaterial DNA Damage Assessment. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006055. [PMID: 33448117 DOI: 10.1002/smll.202006055] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/10/2020] [Indexed: 06/12/2023]
Abstract
Whilst the liver possesses the ability to repair and restore sections of damaged tissue following acute injury, prolonged exposure to engineered nanomaterials (ENM) may induce repetitive injury leading to chronic liver disease. Screening ENM cytotoxicity using 3D liver models has recently been performed, but a significant challenge has been the application of such in vitro models for evaluating ENM associated genotoxicity; a vital component of regulatory human health risk assessment. This review considers the benefits, limitations, and adaptations of specific in vitro approaches to assess DNA damage in the liver, whilst identifying critical advancements required to support a multitude of biochemical endpoints, focusing on nano(geno)toxicology (e.g., secondary genotoxicity, DNA damage, and repair following prolonged or repeated exposures).
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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, Wales, SA2 8PP, UK
| | - Marije Niemeijer
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, Leiden, 2333 CC, The Netherlands
| | - Penny Nymark
- Division of Toxicology, Misvik Biology, Karjakatu 35 B, Turku, FI-20520, Finland
- Institute of Environmental Medicine, Karolinska Institute, Nobels väg 13, Stockholm, 17 177, Sweden
| | - Martijn J Moné
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, Leiden, 2333 CC, The Netherlands
| | - Bob van de Water
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, Leiden, 2333 CC, The Netherlands
| | - Gillian E Conway
- In vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, Wales, SA2 8PP, UK
| | - Gareth J S Jenkins
- In vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, Wales, SA2 8PP, UK
| | - Shareen H Doak
- In vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, Wales, SA2 8PP, UK
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50
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Xavier M, Parente IA, Rodrigues PM, Cerqueira MA, Pastrana L, Gonçalves C. Safety and fate of nanomaterials in food: The role of in vitro tests. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.01.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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