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Porter DW, Orandle MS, Hubbs A, Staska LM, Lowry D, Kashon M, Wolfarth MG, McKinney W, Sargent LM. Potent lung tumor promotion by inhaled MWCNT. Nanotoxicology 2024; 18:69-86. [PMID: 38420937 PMCID: PMC11057902 DOI: 10.1080/17435390.2024.2314473] [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: 10/12/2023] [Accepted: 01/30/2024] [Indexed: 03/02/2024]
Abstract
In the lung, carcinogenesis is a multi-stage process that includes initiation by a genotoxic agent, promotion that expands the population of cells with damaged DNA to form a tumor, and progression from benign to malignant neoplasms. We have previously shown that Mitsui-7, a long and rigid multi-walled carbon nanotube (MWCNT), promotes pulmonary carcinogenesis in a mouse model. To investigate the potential exposure threshold and dose-response for tumor promotion by this MWCNT, 3-methylcholanthrene (MC) initiated (10 μg/g, i.p., once) or vehicle (corn oil) treated B6C3F1 mice were exposed by inhalation to filtered air or MWCNT (5 mg/m3) for 5 h/day for 0, 2, 5, or 10 days and were followed for 17 months post-exposure for evidence of lung tumors. Pulmonary neoplasia incidence in MC-initiated mice significantly increased with each MWCNT exposure duration. Exposure to either MC or MWCNT alone did not affect pulmonary neoplasia incidence compared with vehicle controls. Lung tumor multiplicity in MC-initiated mice also significantly increased with each MWCNT exposure duration. Thus, a significantly higher lung tumor multiplicity was observed after a 10-day MWCNT exposure than following a 2-day exposure. Both bronchioloalveolar adenoma and bronchioloalveolar adenocarcinoma multiplicity in MC-initiated mice were significantly increased following 5- and 10-day MWCNT exposure, while a 2-day MWCNT exposure in MC-initiated mice significantly increased the multiplicity of adenomas but not adenocarcinomas. In this study, even the lowest MWCNT exposure promoted lung tumors in MC-initiated mice. Our findings indicate that exposure to this MWCNT strongly promotes pulmonary carcinogenesis.
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Affiliation(s)
- Dale W Porter
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Marlene S Orandle
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Ann Hubbs
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | | | - David Lowry
- Toxicology and Molecular Biology Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Michael Kashon
- Bioanalytics Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Michael G Wolfarth
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Walter McKinney
- Physical Effects Research Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Linda M Sargent
- Toxicology and Molecular Biology Branch, Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV, USA
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Wils RS, Jacobsen NR, Vogel U, Roursgaard M, Jensen A, Møller P. Pleural inflammatory response, mesothelin content and DNA damage in mice at one-year after intra-pleural carbon nanotube administration. Toxicology 2023; 499:153662. [PMID: 37923288 DOI: 10.1016/j.tox.2023.153662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/17/2023] [Accepted: 10/29/2023] [Indexed: 11/07/2023]
Abstract
Many in vitro and in vivo studies have shown that exposure to carbon nanotubes (CNTs) is associated with inflammation, oxidative stress and genotoxicity, although there is a paucity of studies on these effects in the pleural cavity. In the present study, we investigated adverse outcomes of pleural exposure to multi-walled CNTs (MWCNT-7, NM-401 and NM-403) and single-walled CNTs (NM-411). Female C57BL/6 mice were exposed to 0.2 or 5 µg of CNTs by intra-pleural injection and sacrificed one-year post-exposure. Exposure to long and straight types of MWCNTs (i.e. MWCNT-7 and NM-401) was associated with decreased number of macrophages and increased number of neutrophils and eosinophils in pleural lavage fluid. Increased protein content in the pleural lavage fluid was also observed in mice exposed to MWCNT-7 and NM-401. The concentration of mesothelin was increased in mice exposed to MWCNT-7 and NM-411. Levels of DNA strand breaks and DNA oxidation damage, measured by the comet assay, were unaltered in cells from pleural scrape. Extra-pleural effects were seen in CNT exposed mice, including enlarged and pigmented mediastinal lymph nodes (all four types of CNTs), pericardial plaques (MWCNT-7 and NM-401), macroscopic abnormalities on the liver (MWCNT-7) and ovaries/uterus (NM-411). In conclusion, the results demonstrate that intra-pleural exposure to long and straight MWCNTs is associated with adverse outcomes. Certain observations such as increased content of mesothelin in pleural lavage fluid and ovarian/uterine abnormalities in mice exposed to NM-411 suggests that exposure to SWCNTs may also be associated with some adverse outcomes.
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Affiliation(s)
- Regitze Sølling Wils
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5 A, DK-1014 Copenhagen K, Denmark; The National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100 Copenhagen Ø, Denmark
| | - Nicklas Raun Jacobsen
- The National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100 Copenhagen Ø, Denmark
| | - Ulla Vogel
- The National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100 Copenhagen Ø, Denmark; DTU Food, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Martin Roursgaard
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5 A, DK-1014 Copenhagen K, Denmark
| | - Annie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5 A, DK-1014 Copenhagen K, Denmark
| | - Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5 A, DK-1014 Copenhagen K, Denmark.
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Barthel H, Sébillaud S, Lorcin M, Wolff H, Viton S, Cosnier F, Gaté L, Seidel C. Needlelike, short and thin multi-walled carbon nanotubes: comparison of effects on wild type and p53 +/- rat lungs. Nanotoxicology 2023; 17:270-288. [PMID: 37126100 DOI: 10.1080/17435390.2023.2204933] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Carbon nanotubes (CNTs) are nanomaterials presenting an occupational inhalation risk during production or handling. The International Agency for Research on Cancer classified one CNT, Mitsui-7 (MWNT-7), as 'possibly carcinogenic to humans'. In recognition of their similarities, a proposal has been submitted to the risk assessment committee of ECHA to classify all fibers with 'Fibre Paradigm' (FP)-compatible dimensions as carcinogenic. However, there is a lack of clarity surrounding the toxicity of fibers that do not fit the FP criteria. In this study, we compared the effects of the FP-compatible Mitsui-7, to those of NM-403, a CNT that is too short and thin to fit the paradigm. Female Sprague Dawley rats deficient for p53 (GMO) and wild type (WT) rats were exposed to the two CNTs (0.25 mg/rat/week) by intratracheal instillation. Animals (GMO and WT) were exposed weekly for four consecutive weeks and were sacrificed 3 days or 8 months after the last instillation. Exposure to both CNTs induced acute lung inflammation. However, persistent inflammation at 8 months was only observed in the lungs of rats exposed to NM-403. In addition to the persistent inflammation, NM-403 stimulated hyperplasic changes in rat lungs, and no adenomas or carcinomas were detected. The degree and extent of hyperplasia was significantly more pronounced in GMO rats. These results suggest that CNT not meeting the FP criteria can cause persistent inflammation and hyperplasia. Consequently, their health effects should be carefully assessed.
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Affiliation(s)
- Hélène Barthel
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
- Ingénierie Moléculaire et Physiophatologie Articulaire (IMoPA), Biopôle, Campus Biologie Santé, UMR 7365 CNRS-Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Sylvie Sébillaud
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Mylène Lorcin
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Henrik Wolff
- Finnish Institute of Occupational Health, Helsinki, Finland
| | - Stéphane Viton
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Frédéric Cosnier
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Laurent Gaté
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
| | - Carole Seidel
- French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre-lès-Nancy, France
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Horibata K, Takasawa H, Hojo M, Taquahashi Y, Shigano M, Yokota S, Kobayashi N, Sugiyama KI, Honma M, Hamada S. In vivo genotoxicity assessment of a multiwalled carbon nanotube in a mouse ex vivo culture. GENES AND ENVIRONMENT : THE OFFICIAL JOURNAL OF THE JAPANESE ENVIRONMENTAL MUTAGEN SOCIETY 2022; 44:24. [PMID: 36258253 PMCID: PMC9580184 DOI: 10.1186/s41021-022-00253-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022]
Abstract
Background Multiwalled carbon nanotubes (MWCNTs) are suspected lung carcinogens because their shape and size are similar to asbestos. Various MWCNT types are manufactured; however, only MWNT-7 is classified into Group 2B by The International Agency for Research on Cancer. MWNT-7’s carcinogenicity is strongly related to inflammatory reactions. On the other hand, inconsistent results on MWNT-7 genotoxicity have been reported. We previously observed no significant differences in both Pig-a (blood) and gpt (lung) mutant frequencies between MWNT-7-intratracheally treated and negative control rats. In this study, to investigate in vivo MWNT-7 genotoxicity on various endpoints, we attempted to develop a lung micronucleus assay through ex vivo culture targeting the cellular fraction of Clara cells and alveolar Type II (AT-II) cells, known as the initiating cells of lung cancer. Using this system, we analyzed the in vivo MWNT-7 genotoxicity induced by both whole-body inhalation exposure and intratracheal instillation. We also conducted an erythrocyte micronucleus assay using the samples obtained from animals under intratracheal instillation to investigate the tissue specificity of MWNT-7 induced genotoxicities. Results We detected a significant increase in the incidence of micronucleated cells derived from the cellular fraction of Clara cells and AT-II cells in both MWNT-7-treated and positive control groups compared to the negative control group under both whole-body inhalation exposures and intratracheal instillation. Additionally, the erythrocyte micronucleus assay detected a significant increase in the incidence of micronucleated reticulocytes only in the positive control group. Conclusions Our findings indicated that MWNT-7 was genotoxic in the lungs directly exposed by both the body inhalation and intratracheal instillation but not in the hematopoietic tissue.
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Affiliation(s)
- Katsuyoshi Horibata
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan.
| | - Hironao Takasawa
- LSIM Safety Institute Corporation, 14-1 Sunayama, Kamisu-shi, Ibaraki, 314-0255, Japan
| | - Motoki Hojo
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunincho, Shinjuku, Tokyo, 169-0073, Japan
| | - Yuhji Taquahashi
- Division of Cellular and Molecular Toxicology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Miyuki Shigano
- LSIM Safety Institute Corporation, 14-1 Sunayama, Kamisu-shi, Ibaraki, 314-0255, Japan
| | - Satoshi Yokota
- Division of Cellular and Molecular Toxicology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Norihiro Kobayashi
- Division of Environmental Chemistry, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Kei-Ichi Sugiyama
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Masamitsu Honma
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan.,Division of General Affairs, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-9501, Japan
| | - Shuichi Hamada
- LSIM Safety Institute Corporation, 14-1 Sunayama, Kamisu-shi, Ibaraki, 314-0255, Japan. .,BoZo Research Center Inc, 1-3-11 Hanegi, Setagaya-ku, Tokyo, 156-0042, Japan.
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Fujita K, Obara S, Maru J, Endoh S. Genotoxicity assessment of cellulose nanofibrils using a standard battery of in vitro and in vivo assays. Toxicol Rep 2022; 9:68-77. [PMID: 35004184 PMCID: PMC8718569 DOI: 10.1016/j.toxrep.2021.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 11/10/2021] [Accepted: 12/15/2021] [Indexed: 11/26/2022] Open
Abstract
CNFs did not induce bacterial reverse and in vitro mammalian cell gene mutation. CNFs did not induce chromosomal aberration in CHL/IU cells. CNFs did not increase the proportion of micronucleated polychromatic erythrocytes in rat bone marrow. Three types of CNFs with different manufacturing methods exhibited no genotoxicity.
Cellulose nanofibrils (CNFs) are identified as novel nanomaterials with many potential applications. Since CNFs are fibrous manufactured nanomaterials, their potential carcinogenic effects and mesothelial toxicity raise some concerns. In this study, we conducted a standard battery of in vitro and in vivo assays to evaluate the genotoxicity of two CNF types using different manufacturing methods and physicochemical properties. Namely, one was CNF produced via chemical modification by TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidation, while the other was CNF produced via mechanical defibrillation using needle bleached kraft pulp. A bacterial reverse mutation test and a mouse lymphoma TK assay revealed that CNFs at 100 μg/mL did not induce bacterial reverse mutations and in vitro mammalian cell gene mutation. Further, in vitro chromosomal aberration tests demonstrated that CNFs at 100 μg/mL did not induce chromosomal aberration in Chinese hamster lung fibroblasts. From the mammalian erythrocyte micronucleus test, no statistically significant increase was observed in the proportion of micronucleated polychromatic erythrocytes in the bone marrow cells of rats intratracheally instilled with any concentration of CNFs (0.25–1.0 mg/kg) compared with values from respective negative control groups. Therefore, this battery of in vitro and in vivo assays illustrated that the CNFs examined in this study did not induce genotoxicity, suggesting our results provide valuable insight on the future use of these materials in various industrial applications.
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Affiliation(s)
- Katsuhide Fujita
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8569, Japan
| | - Sawae Obara
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8569, Japan
| | - Junko Maru
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8569, Japan
| | - Shigehisa Endoh
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8569, Japan
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Sager TM, Umbright CM, Mustafa GM, Roberts JR, Orandle MS, Cumpston JL, McKinney WG, Boots T, Kashon ML, Joseph P. Pulmonary toxicity and gene expression changes in response to whole-body inhalation exposure to multi-walled carbon nanotubes in rats. Inhal Toxicol 2022; 34:200-218. [PMID: 35648795 PMCID: PMC9885491 DOI: 10.1080/08958378.2022.2081386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Purpose: To investigate the molecular mechanisms underlying the pulmonary toxicity induced by exposure to one form of multi-walled carbon nanotubes (MWCNT-7).Materials and methods: Rats were exposed, by whole-body inhalation, to air or an aerosol containing MWCNT-7 particles at target cumulative doses (concentration x time) ranging from 22.5 to 180 (mg/m3)h over a three-day (6 hours/day) period and toxicity and global gene expression profiles were determined in the lungs.Results: MWCNT-7 particles, associated with alveolar macrophages (AMs), were detected in rat lungs following the exposure. Mild to moderate lung pathological changes consisting of increased cellularity, thickening of the alveolar wall, alveolitis, fibrosis, and granuloma formation were detected. Bronchoalveolar lavage (BAL) toxicity parameters such as lactate dehydrogenase activity, number of AMs and polymorphonuclear leukocytes (PMNs), intracellular oxidant generation by phagocytes, and levels of cytokines were significantly (p < 0.05) increased in response to exposure to MWCNT-7. Global gene expression profiling identified several significantly differentially expressed genes (fold change >1.5 and FDR p value <0.05) in all the MWCNT-7 exposed rats. Bioinformatic analysis of the gene expression data identified significant enrichment of several diseases/biological function categories (for example, cancer, leukocyte migration, inflammatory response, mitosis, and movement of phagocytes) and canonical pathways (for example, kinetochore metaphase signaling pathway, granulocyte and agranulocyte adhesion and diapedesis, acute phase response, and LXR/RXR activation). The alterations in the lung toxicity parameters and gene expression changes exhibited a dose-response to the MWCNT exposure.Conclusions: Taken together, the data provided insights into the molecular mechanisms underlying the pulmonary toxicity induced by inhalation exposure of rats to MWCNT-7.
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Affiliation(s)
- Tina M. Sager
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Christina M. Umbright
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Gul Mehnaz Mustafa
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Jenny R. Roberts
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Marlene S. Orandle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Jared L. Cumpston
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Walter G. McKinney
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Theresa Boots
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Michael L. Kashon
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
| | - Pius Joseph
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, USA
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Fujita K, Obara S, Maru J. Pulmonary toxicity, cytotoxicity, and genotoxicity of submicron-diameter carbon fibers with different diameters and lengths. Toxicology 2021; 466:153063. [PMID: 34890706 DOI: 10.1016/j.tox.2021.153063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/30/2021] [Accepted: 12/06/2021] [Indexed: 12/30/2022]
Abstract
Submicron-diameter carbon fibers (SCFs) are a type of fine-diameter fibrous carbon material that can be used in various applications. To accelerate their practical application, a hazard assessment of SCFs must be undertaken. This study demonstrated the pulmonary toxicity, cytotoxicity, and genotoxicity of three types of SCFs with different diameters and lengths. The average diameter and length of SCFs were 259.2 nm and 11.7 μm in SCF1 suspensions, 248.5 nm and 6.7 μm in SCF2 suspensions, and 183.0 nm and 13.7 μm in SCF3 suspensions, respectively. The results of pulmonary inflammation and recovery following intratracheal instillation with SCFs at doses of 0.25, 0.5, or 1.0 mg/kg showed that the pulmonary toxicity of SCFs was SCF3 > SCF1 > SCF2. These results suggest that SCF diameter and length are most likely important contributing factors associated with lung SCF clearance, pulmonary inflammation, and recovery. Furthermore, SCFs are less pulmonary toxic than bent multi-walled carbon nanotubes. Cell viability, pro-inflammatory cytokine and intracellular reactive oxygen species productions, morphological changes, gene expression profiling in NR8383 rat alveolar macrophage cells showed that the cytotoxic potency of SCFs is: SCF3 > SCF1 > SCF2. These results showed that SCFs with small diameters had high cytotoxicity, and SCFs with short lengths had low cytotoxicity. We conclude that pulmonary toxicity and cytotoxicity are associated with the diameter and length distributions of SCFs. In addition, a standard battery for genotoxicity testing, namely the Ames test, an in vitro chromosomal aberration test, and a mammalian erythrocyte micronucleus test, demonstrated that the three types of SCFs did not induce genotoxicity. Our findings provide new evidence for evaluating the potential toxicity of not only SCFs used in this study but also various SCFs which differ depending on the manufacturing processes or physicochemical properties.
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Affiliation(s)
- Katsuhide Fujita
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8569, Japan.
| | - Sawae Obara
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8569, Japan
| | - Junko Maru
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8569, Japan
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Shukla RK, Badiye A, Vajpayee K, Kapoor N. Genotoxic Potential of Nanoparticles: Structural and Functional Modifications in DNA. Front Genet 2021; 12:728250. [PMID: 34659351 PMCID: PMC8511513 DOI: 10.3389/fgene.2021.728250] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/14/2021] [Indexed: 12/17/2022] Open
Abstract
The rapid advancement of nanotechnology enhances the production of different nanoparticles that meet the demand of various fields like biomedical sciences, industrial, material sciences and biotechnology, etc. This technological development increases the chances of nanoparticles exposure to human beings, which can threaten their health. It is well known that various cellular processes (transcription, translation, and replication during cell proliferation, cell cycle, cell differentiation) in which genetic materials (DNA and RNA) are involved play a vital role to maintain any structural and functional modification into it. When nanoparticles come into the vicinity of the cellular system, chances of uptake become high due to their small size. This cellular uptake of nanoparticles enhances its interaction with DNA, leading to structural and functional modification (DNA damage/repair, DNA methylation) into the DNA. These modifications exhibit adverse effects on the cellular system, consequently showing its inadvertent effect on human health. Therefore, in the present study, an attempt has been made to elucidate the genotoxic mechanism of nanoparticles in the context of structural and functional modifications of DNA.
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Affiliation(s)
- Ritesh K Shukla
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Ahmedabad, India
| | - Ashish Badiye
- Department of Forensic Science, Government Institute of Forensic Science, Nagpur, India
| | - Kamayani Vajpayee
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Ahmedabad, India
| | - Neeti Kapoor
- Department of Forensic Science, Government Institute of Forensic Science, Nagpur, India
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Møller P, Wils RS, Di Ianni E, Gutierrez CAT, Roursgaard M, Jacobsen NR. Genotoxicity of multi-walled carbon nanotube reference materials in mammalian cells and animals. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2021; 788:108393. [PMID: 34893158 DOI: 10.1016/j.mrrev.2021.108393] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 02/07/2023]
Abstract
Carbon nanotubes (CNTs) were the first nanomaterials to be evaluated by the International Agency for Research on Cancer (IARC). The categorization as possibly carcinogenic agent to humans was only applicable to multi-walled carbon nanotubes called MWCNT-7. Other types of CNTs were not classifiable because of missing data and it was not possible to pinpoint unique CNT characteristics that cause cancer. Importantly, the European Commission's Joint Research Centre (JRC) has established a repository of industrially manufactured nanomaterials that encompasses at least four well-characterized MWCNTs called NM-400 to NM-403 (original JRC code). This review summarizes the genotoxic effects of these JRC materials and MWCNT-7. The review consists of 36 publications with results on cell culture experiments (22 publications), animal models (9 publications) or both (5 publications). As compared to the publications in the IARC monograph on CNTs, the current database represents a significant increase as there is only an overlap of 8 publications. However, the results come mainly from cell cultures and/or measurements of DNA strand breaks by the comet assay and the micronucleus assay (82 out of 97 outcomes). A meta-analysis of cell culture studies on DNA strand breaks showed a genotoxic response by MWCNT-7, less consistent effect by NM-400 and NM-402, and least consistent effect by NM-401 and NM-403. Results from other in vitro tests indicate strongest evidence of genotoxicity for MWCNT-7. There are too few observations from animal models and humans to make general conclusions about genotoxicity.
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Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014, Copenhagen K, Denmark.
| | - Regitze Sølling Wils
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014, Copenhagen K, Denmark; The National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100, Copenhagen Ø, Denmark
| | - Emilio Di Ianni
- The National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100, Copenhagen Ø, Denmark
| | - Claudia Andrea Torero Gutierrez
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014, Copenhagen K, Denmark; The National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100, Copenhagen Ø, Denmark
| | - Martin Roursgaard
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014, Copenhagen K, Denmark
| | - Nicklas Raun Jacobsen
- The National Research Centre for the Working Environment, Lersø Parkalle 105, DK-2100, Copenhagen Ø, Denmark
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Oliveira FC, Carvalho JO, Magalhães LSSM, da Silva JM, Pereira SR, Gomes Júnior AL, Soares LM, Cariman LIC, da Silva RI, Viana BC, Silva-Filho EC, Afewerki S, da Cunha HN, Vega ML, Marciano FR, Lobo AO. Biomineralization inspired engineering of nanobiomaterials promoting bone repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111776. [PMID: 33545906 DOI: 10.1016/j.msec.2020.111776] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/20/2020] [Accepted: 11/27/2020] [Indexed: 12/31/2022]
Abstract
A biomineralization processes is disclosed for engineering nanomaterials that support bone repair. The material was fabricated through a hot press process using electrospun poly(lactic acid) (PLA) matrix covered with hybrid composites of carbon nanotubes/graphene nanoribbons (GNR) and nanohydroxyapatite (nHA). Various scaffolds were devised [nHA/PLA, PLA/GNR, and PLA/nHA/GNR (1 and 3%)] and their structure and morphology characterized through Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDS), and Atomic force microscope (AFM). Moreover, thorough biocompatibility and toxicity studies were performed. Here, in vivo studies on toxicity and cytotoxicity were conducted in aqueous dispersions of the biomaterials at concentrations of 30, 60, and 120 μg/mL using the Allium cepa test. Further toxicity studies were performed through hemolysis toxicity tests and genotoxicity tests evaluating the damage index and damage frequencies of DNAs through comet assays with samples of the animals' peripheral blood, marrow, and liver. Additionally, the regenerative activity of the scaffolds was analyzed by measuring the cortical tibiae of rats oophorectomized implanted with the biomaterials. Biochemical analyzes [glutamic pyruvic transaminase (GPT), glutamic oxaloacetic transaminase (GOT), urea, calcium, phosphorus, and alkaline phosphatase (ALP)] were also performed on blood samples. The results suggested a toxicity and cytotoxicity level for the GNR biomaterials at a concentration of 60 and 120 μg/mL, but non-toxicity and cytotoxicity for the 30 μg/mL concentration. The scaffolds obtained at a concentration of 0.3 mg/cm2 were not toxic in the hemolysis test and demonstrated no cytotoxicity, genotoxicity, and mutagenicity in the blood, marrow, and liver analyzes of the animals, corroborating data from the biochemical markers of GPT, GOT, and urea. Tissue regeneration was performed in all groups and was more pronounced in the group containing the combination of nHA/GNR (3%), which is consistent with the data obtained for the calcium, serum phosphorus, and ALP concentrations. Consequently, the study indicates that the engineered nanobiomaterial is a promising candidate for bone tissue repair and regenerative applications. STATEMENT OF SIGNIFICANCE: The scientific contribution of this study is the engineering of a synthetic hybrid biomaterial, in nanoscale by a pressing and heating process. A biodegradable polymeric matrix was covered on both sides with a carbonated hybrid bioceramic/graphene nanoribbons (GNR), which has hydrophilic characteristics, with chemical elements stoichiometrically similar to bone mineral composition. The nanomaterial displayed promising bone regeneration ability, which is the first example to be used in an osteoporotic animal model. Moreover, detailed biocompatibility and toxicity studies were performed on the nanomaterials and their compositions, which is of great interest for the scientific community.
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Affiliation(s)
- Francilio Carvalho Oliveira
- Instituto Científico e Tecnológico, Universidade Brasil, 08230-030 Itaquera, São Paulo, Brazil; Centro Universitário de Saúde, Ciências Humanas e Tecnológicas do Piauí (UNINOVAFAPI), Teresina, PI 64073-505, Brazil; Faculdade Estácio Teresina, Teresina, PI 64046-700, Brazil
| | - Jancineide Oliveira Carvalho
- Instituto Científico e Tecnológico, Universidade Brasil, 08230-030 Itaquera, São Paulo, Brazil; Centro Universitário de Saúde, Ciências Humanas e Tecnológicas do Piauí (UNINOVAFAPI), Teresina, PI 64073-505, Brazil
| | - Leila S S M Magalhães
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI - Federal University of Piaui, Teresina, PI 64049-550, Brazil
| | - Juliana Marques da Silva
- Centro Universitário de Saúde, Ciências Humanas e Tecnológicas do Piauí (UNINOVAFAPI), Teresina, PI 64073-505, Brazil
| | - Saronny Rose Pereira
- Centro Universitário de Saúde, Ciências Humanas e Tecnológicas do Piauí (UNINOVAFAPI), Teresina, PI 64073-505, Brazil
| | - Antonio Luiz Gomes Júnior
- Centro Universitário de Saúde, Ciências Humanas e Tecnológicas do Piauí (UNINOVAFAPI), Teresina, PI 64073-505, Brazil
| | | | - Laynna Ingrid Cruz Cariman
- Centro Universitário de Saúde, Ciências Humanas e Tecnológicas do Piauí (UNINOVAFAPI), Teresina, PI 64073-505, Brazil
| | - Ruan Inácio da Silva
- Centro Universitário de Saúde, Ciências Humanas e Tecnológicas do Piauí (UNINOVAFAPI), Teresina, PI 64073-505, Brazil
| | - Bartolomeu C Viana
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI - Federal University of Piaui, Teresina, PI 64049-550, Brazil; Department of Physics, UFPI - Federal University of Piaui, Teresina, PI 64049-550, Brazil
| | - Edson Cavalcanti Silva-Filho
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI - Federal University of Piaui, Teresina, PI 64049-550, Brazil
| | - Samson Afewerki
- Division of Engineering in Medicine, Department of Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Division of Health Science and Technology, Harvard University - Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA
| | - Helder Nunes da Cunha
- Department of Physics, UFPI - Federal University of Piaui, Teresina, PI 64049-550, Brazil
| | - Maria Leticia Vega
- Department of Physics, UFPI - Federal University of Piaui, Teresina, PI 64049-550, Brazil
| | | | - Anderson Oliveira Lobo
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, Materials Science and Engineering Graduate Program, UFPI - Federal University of Piaui, Teresina, PI 64049-550, Brazil.
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11
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The role of single- and multi-walled carbon nanotube in breast cancer treatment. Ther Deliv 2020; 11:653-672. [DOI: 10.4155/tde-2020-0019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Numerous studies have been conducted to design new strategies for breast cancer treatment. Past studies have shown a wide range of carbon-nanomaterials properties, such as single- and multi-walled carbon nanotubes (SWCNTs and MWCNTs) in breast cancer diagnosis and treatment. In this regard, the current study aims to review the role of both SWCNTs and MWCNTs in breast cancer treatment and diagnosis. For reaching this goal, we reviewed the literature by using various searching engines such as Scopus, PubMed, Google Scholar, Web of Science and MEDLINE. This comprehensive review showed that CNTs could dramatically improve breast cancer treatment and could be used as a novel modality to increase diagnostic accuracy; however, no clinical studies have been conducted based on CNTs. In addition, the literature review demonstrates a lack of enough studies to evaluate the side effects of using CNTs.
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12
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Far-reaching advances in the role of carbon nanotubes in cancer therapy. Life Sci 2020; 257:118059. [PMID: 32659368 DOI: 10.1016/j.lfs.2020.118059] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 06/27/2020] [Accepted: 07/02/2020] [Indexed: 12/16/2022]
Abstract
Cancer includes a group of diseases involving unregulated cell growth with the potential to invade or expand to other parts of the body, resulting in an estimate of 9.6 million deaths worldwide in 2018. Manifold studies have been conducted to design more efficacious techniques for cancer therapy due to the inadequacy of conventional treatments including chemotherapy, surgery, and radiation therapy. With the advances in the biomedical applications of nanotechnology-based systems, nanomaterials have gained increasing attention as promising vehicles for targeted cancer therapy and optimizing treatment outcomes. Owing to their outstanding thermal, electrical, optical and chemical properties, carbon nanotubes (CNTs) have been profoundly studied to explore the various perspectives of their application in cancer treatment. The current study aims to review the role of CNTs whether as a carrier or mediator in cancer treatment for enhancing the efficacy as well as the specificity of therapy and reducing adverse side effects. This comprehensive review indicates that CNTs have the capability to be the next generation nanomaterials to actualize noninvasive targeted eradication of tumors. However, further studies are needed to evaluate the consequences of their biomedical application before the transition into clinical trials, since possible adverse effects of CNTs on biological systems have not been clearly understood.
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13
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Affiliation(s)
- Takafumi Sai
- Innovation Promotion Division, Oji Holdings Corporation, Tokyo, Japan
| | - Katsuhide Fujita
- Research Institute of Science and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
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14
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Fujita K, Obara S, Maru J, Endoh S. Cytotoxicity profiles of multi-walled carbon nanotubes with different physico-chemical properties. Toxicol Mech Methods 2020; 30:477-489. [DOI: 10.1080/15376516.2020.1761920] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Katsuhide Fujita
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Sawae Obara
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Junko Maru
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Shigehisa Endoh
- Research Institute of Science for Safety and Sustainability (RISS), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
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15
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Samadian H, Salami MS, Jaymand M, Azarnezhad A, Najafi M, Barabadi H, Ahmadi A. Genotoxicity assessment of carbon-based nanomaterials; Have their unique physicochemical properties made them double-edged swords? MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2020; 783:108296. [DOI: 10.1016/j.mrrev.2020.108296] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 01/03/2020] [Accepted: 01/06/2020] [Indexed: 12/26/2022]
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16
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Buglak AA, Zherdev AV, Dzantiev BB. Nano-(Q)SAR for Cytotoxicity Prediction of Engineered Nanomaterials. Molecules 2019; 24:molecules24244537. [PMID: 31835808 PMCID: PMC6943593 DOI: 10.3390/molecules24244537] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/24/2019] [Accepted: 12/10/2019] [Indexed: 12/12/2022] Open
Abstract
Although nanotechnology is a new and rapidly growing area of science, the impact of nanomaterials on living organisms is unknown in many aspects. In this regard, it is extremely important to perform toxicological tests, but complete characterization of all varying preparations is extremely laborious. The computational technique called quantitative structure–activity relationship, or QSAR, allows reducing the cost of time- and resource-consuming nanotoxicity tests. In this review, (Q)SAR cytotoxicity studies of the past decade are systematically considered. We regard here five classes of engineered nanomaterials (ENMs): Metal oxides, metal-containing nanoparticles, multi-walled carbon nanotubes, fullerenes, and silica nanoparticles. Some studies reveal that QSAR models are better than classification SAR models, while other reports conclude that SAR is more precise than QSAR. The quasi-QSAR method appears to be the most promising tool, as it allows accurately taking experimental conditions into account. However, experimental artifacts are a major concern in this case.
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Affiliation(s)
- Andrey A. Buglak
- A. N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia; (A.V.Z.); (B.B.D.)
- Physical Faculty, St. Petersburg State University, 7/9 Universitetskaya Naberezhnaya, 199034 St. Petersburg, Russia
- Correspondence: ; Tel.: +7-(495)-954-27-32
| | - Anatoly V. Zherdev
- A. N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia; (A.V.Z.); (B.B.D.)
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Severny Proezd 1, 142432 Chernogolovka, Moscow Region, Russia
| | - Boris B. Dzantiev
- A. N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia; (A.V.Z.); (B.B.D.)
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17
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Elespuru R, Pfuhler S, Aardema MJ, Chen T, Doak SH, Doherty A, Farabaugh CS, Kenny J, Manjanatha M, Mahadevan B, Moore MM, Ouédraogo G, Stankowski LF, Tanir JY. Genotoxicity Assessment of Nanomaterials: Recommendations on Best Practices, Assays, and Methods. Toxicol Sci 2019; 164:391-416. [PMID: 29701824 DOI: 10.1093/toxsci/kfy100] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Nanomaterials (NMs) present unique challenges in safety evaluation. An international working group, the Genetic Toxicology Technical Committee of the International Life Sciences Institute's Health and Environmental Sciences Institute, has addressed issues related to the genotoxicity assessment of NMs. A critical review of published data has been followed by recommendations on methods alterations and best practices for the standard genotoxicity assays: bacterial reverse mutation (Ames); in vitro mammalian assays for mutations, chromosomal aberrations, micronucleus induction, or DNA strand breaks (comet); and in vivo assays for genetic damage (micronucleus, comet and transgenic mutation assays). The analysis found a great diversity of tests and systems used for in vitro assays; many did not meet criteria for a valid test, and/or did not use validated cells and methods in the Organization for Economic Co-operation and Development Test Guidelines, and so these results could not be interpreted. In vivo assays were less common but better performed. It was not possible to develop conclusions on test system agreement, NM activity, or mechanism of action. However, the limited responses observed for most NMs were consistent with indirect genotoxic effects, rather than direct interaction of NMs with DNA. We propose a revised genotoxicity test battery for NMs that includes in vitro mammalian cell mutagenicity and clastogenicity assessments; in vivo assessments would be added only if warranted by information on specific organ exposure or sequestration of NMs. The bacterial assays are generally uninformative for NMs due to limited particle uptake and possible lack of mechanistic relevance, and are thus omitted in our recommended test battery for NM assessment. Recommendations include NM characterization in the test medium, verification of uptake into target cells, and limited assay-specific methods alterations to avoid interference with uptake or endpoint analysis. These recommendations are summarized in a Roadmap guideline for testing.
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Affiliation(s)
- Rosalie Elespuru
- Division of Biology, Chemistry and Materials Science, US Food and Drug Administration, CDRH/OSEL, Silver Spring, Maryland 20993
| | - Stefan Pfuhler
- The Procter & Gamble Company, Mason Business Centre, Mason, Ohio 45040
| | | | - Tao Chen
- Division of Genetic and Molecular Toxicology, US Food and Drug Administration, NCTR, Jefferson, Arkansas 72079
| | - Shareen H Doak
- Institute of Life Science, Swansea University Medical School, Swansea, Wales SA2 8PP, UK
| | - Ann Doherty
- Discovery Safety, Drug Safety and Metabolism, IMED Biotech Unit, AstraZeneca Genetic Toxicology, AstraZeneca, Cambridge CB4 0WG, UK
| | | | - Julia Kenny
- Genetic Toxicology & Photosafety, David Jack Centre for Research & Development, GlaxoSmithKline, Ware, Hertfordshire SG12 0DP, UK
| | - Mugimane Manjanatha
- Division of Genetic and Molecular Toxicology, US Food and Drug Administration, NCTR, Jefferson, Arkansas 72079
| | - Brinda Mahadevan
- Global Pre-clinical Development Innovation & Development, Established Pharmaceuticals, Abbott, Mumbai 400072, India
| | | | | | | | - Jennifer Y Tanir
- ILSI Health and Environmental Sciences Institute (HESI), Washington, District of Columbia 20005
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18
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Aschberger K, Asturiol D, Lamon L, Richarz A, Gerloff K, Worth A. Grouping of multi-walled carbon nanotubes to read-across genotoxicity: A case study to evaluate the applicability of regulatory guidance. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.comtox.2018.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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19
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Demir E, Marcos R. Toxic and genotoxic effects of graphene and multi-walled carbon nanotubes. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:645-660. [PMID: 29873610 DOI: 10.1080/15287394.2018.1477314] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 05/02/2018] [Indexed: 06/08/2023]
Abstract
Graphene and multi-walled carbon nanotubes (MWCNT) are widely used in nanomedicine, and other fields, due to their unique physicochemical properties including high tensile strength, ultra-light weight, thermal and chemical stability, and reliable semi-conductive electronic properties. Although extensive amount of data exist describing their adverse effects including potential genotoxicity, few studies using gene mutation detection approaches in mammalian cells are available, which represents an important gap for risk estimations. The aim of the present study was to determine the effects of graphene or MWCNT [as pure, carboxyl (COOH) functionalized, and amide (NH2) functionalized] on cytotoxicity, intracellular levels of reactive oxygen species, apoptosis, gene expression changes, and gene mutation induction in L5178Y/Tk+/-3.7.2C mouse lymphoma cell line. Although some adverse effects were observed at concentrations of 350 and 450 µg/ml, which are excessive and not environmentally relevant levels, no marked effects were detected at concentrations of 250 µg/ml and lower. This is the first study reporting cytotoxicity, mutagenicity, and gene expression findings in the mouse lymphoma cell line for graphene and different MWCNT forms at high concentrations; however, the biological relevance of these observations needs to be assessed following chronic in vivo exposure.
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Affiliation(s)
- Eşref Demir
- a Faculty of Engineering, Department of Genetics and Bioengineering , Giresun University , Giresun , Turkey
| | - Ricard Marcos
- b Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències , Universitat Autònoma de Barcelona , Cerdanyola del Vallès , Spain
- c CIBER Epidemiología y Salud Pública , ISCIII , Barcelona , Spain
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20
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Kavosi A, Hosseini Ghale Noei S, Madani S, Khalighfard S, Khodayari S, Khodayari H, Mirzaei M, Kalhori MR, Yavarian M, Alizadeh AM, Falahati M. The toxicity and therapeutic effects of single-and multi-wall carbon nanotubes on mice breast cancer. Sci Rep 2018; 8:8375. [PMID: 29849103 PMCID: PMC5976726 DOI: 10.1038/s41598-018-26790-x] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 05/18/2018] [Indexed: 12/23/2022] Open
Abstract
Herein, we have investigated the toxicity of SWCNTs and MWCNTs in vitro and in vivo, and assessed their therapeutic effects on a typical animal model of breast cancer in order to obtain: first, the cytotoxicity effects of CNTs on MC4L2 cell and mice, second the impact of CNTs on ablation of breast tumor. CNTs especially SWCNTs were toxic to organs and induced death at high dosages. In this case, some of the liver cells showed a relative shrinkage which was also confirmed by Annexin test in MC4L2 cells. Moreover, CNTs decreased the tumor volume. BCL2 gene was down-regulated, and BAX and Caspase-3 were also up-regulated in the treated groups with CNTs. As a result, CNTs especially MWCNT in lower dosages can be used as a promising drug delivery vehicle for targeted therapy of abnormal cells in breast cancer.
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Affiliation(s)
- Arghavan Kavosi
- Department of Cellular and Molecular Biology, Faculty of Advanced Sciences and Technology, Islamic Azad University, Pharmaceutical Science branch, Tehran, Iran
| | - Saeideh Hosseini Ghale Noei
- Department of Cellular and Molecular Biology, Faculty of Advanced Sciences and Technology, Islamic Azad University, Pharmaceutical Science branch, Tehran, Iran
| | - Samaneh Madani
- Department of Cellular and Molecular Biology, Faculty of Advanced Sciences and Technology, Islamic Azad University, Pharmaceutical Science branch, Tehran, Iran
| | - Solmaz Khalighfard
- Department of Biology, Islamic Azad University, Science and Research Branch, Tehran, Iran
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Khodayari
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Khodayari
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Breast Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Malihe Mirzaei
- Department of Biology, Islamic Azad University, Arsanjan Branch, Arsanjan, Iran
| | | | - Majid Yavarian
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Mohammad Alizadeh
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran.
- Breast Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran.
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21
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Fukushima S, Kasai T, Umeda Y, Ohnishi M, Sasaki T, Matsumoto M. Carcinogenicity of multi-walled carbon nanotubes: challenging issue on hazard assessment. J Occup Health 2018; 60:10-30. [PMID: 29046510 PMCID: PMC5799097 DOI: 10.1539/joh.17-0102-ra] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 09/10/2017] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVES This report reviews the carcinogenicity of multi-walled carbon nanotubes (MWCNTs) in experimental animals, concentrating on MWNT-7, a straight fibrous MWCNT. METHODS MWCNTs were administered to mice and rats by intraperitoneal injection, intrascrotal injection, subcutaneous injection, intratracheal instillation and inhalation. RESULTS Intraperitoneal injection of MWNT-7 induced peritoneal mesothelioma in mice and rats. Intrascrotal injection induced peritoneal mesothelioma in rats. Intratracheal instillation of MWCNT-N (another straight fibrous MWCNT) induced both lung carcinoma and pleural mesothelioma in rats. In the whole body inhalation studies, in mice MWNT-7 promoted methylcholanthrene-initiated lung carcinogenesis. In rats, inhalation of MWNT-7 induced lung carcinoma and lung burdens of MWNT-7 increased with increasing concentration of airborne MWNT-7 and increasing duration of exposure. CONCLUSIONS Straight, fibrous MWCNTs exerted carcinogenicity in experimental animals. Phagocytosis of MWCNT fibers by macrophages was very likely to be a principle factor in MWCNT lung carcinogenesis. Using no-observed-adverse-effect level-based approach, we calculated that the occupational exposure limit (OEL) of MWNT-7 for cancer protection is 0.15 μg/m3 for a human worker. Further studies on the effects of the shape and size of MWCNT fibers and mode of action on the carcinogenicity are required.
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Affiliation(s)
- Shoji Fukushima
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety
- Association for Promotion of Research on Risk Assessment
| | - Tatsuya Kasai
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety
| | - Yumi Umeda
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety
| | - Makoto Ohnishi
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety
| | - Toshiaki Sasaki
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety
| | - Michiharu Matsumoto
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety
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22
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Møller P, Jacobsen NR. Weight of evidence analysis for assessing the genotoxic potential of carbon nanotubes. Crit Rev Toxicol 2017; 47:867-884. [DOI: 10.1080/10408444.2017.1367755] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen K, Denmark
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23
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Horibata K, Ukai A, Ogata A, Nakae D, Ando H, Kubo Y, Nagasawa A, Yuzawa K, Honma M. Absence of in vivo mutagenicity of multi-walled carbon nanotubes in single intratracheal instillation study using F344 gpt delta rats. Genes Environ 2017; 39:4. [PMID: 28074111 PMCID: PMC5217301 DOI: 10.1186/s41021-016-0065-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 12/08/2016] [Indexed: 11/20/2022] Open
Abstract
Introduction It is known that fibrous particles of micrometer length, such as carbon nanotubes, which have same dimensions as asbestos, are carcinogenic. Carcinogenicity of nanomaterials is strongly related to inflammatory reactions; however, the genotoxicity mechanism(s) is unclear. Indeed, inconsistent results on genotoxicity of multi-walled carbon nanotubes (MWCNTs) have been shown in several reports. Therefore, we analyzed the in vivo genotoxicity induced by an intratracheal instillation of straight MWCNTs in rats using a different test system—the Pig-a gene mutation assay—that can reflect the genotoxicity occurring in the bone marrow. Since lungs were directly exposed to MWCNTs upon intratracheal instillation, we also performed the gpt assay using the lungs. Findings We detected no significant differences in Pig-a mutant frequencies (MFs) between the MWCNT-treated and control rats. Additionally, we detected no significant differences in gpt MFs in the lung between the MWCNT-treated and control rats. Conclusions Our findings indicated that a single intratracheal instillation of MWCNTs was non-mutagenic to both the bone marrow and lung of rats.
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Affiliation(s)
- Katsuyoshi Horibata
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya, Tokyo, 158-8501 Japan
| | - Akiko Ukai
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya, Tokyo, 158-8501 Japan
| | - Akio Ogata
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku, Tokyo, 169-0073 Japan
| | - Dai Nakae
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku, Tokyo, 169-0073 Japan ; Present address: Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakura-ga-Oka, Setagaya, Tokyo, 156-8502 Japan
| | - Hiroshi Ando
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku, Tokyo, 169-0073 Japan
| | - Yoshikazu Kubo
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku, Tokyo, 169-0073 Japan
| | - Akemichi Nagasawa
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku, Tokyo, 169-0073 Japan
| | - Katsuhiro Yuzawa
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku, Tokyo, 169-0073 Japan
| | - Masamitsu Honma
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya, Tokyo, 158-8501 Japan
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Kuempel ED, Jaurand MC, Møller P, Morimoto Y, Kobayashi N, Pinkerton KE, Sargent LM, Vermeulen RCH, Fubini B, Kane AB. Evaluating the mechanistic evidence and key data gaps in assessing the potential carcinogenicity of carbon nanotubes and nanofibers in humans. Crit Rev Toxicol 2017; 47:1-58. [PMID: 27537422 PMCID: PMC5555643 DOI: 10.1080/10408444.2016.1206061] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 06/22/2016] [Indexed: 12/31/2022]
Abstract
In an evaluation of carbon nanotubes (CNTs) for the IARC Monograph 111, the Mechanisms Subgroup was tasked with assessing the strength of evidence on the potential carcinogenicity of CNTs in humans. The mechanistic evidence was considered to be not strong enough to alter the evaluations based on the animal data. In this paper, we provide an extended, in-depth examination of the in vivo and in vitro experimental studies according to current hypotheses on the carcinogenicity of inhaled particles and fibers. We cite additional studies of CNTs that were not available at the time of the IARC meeting in October 2014, and extend our evaluation to include carbon nanofibers (CNFs). Finally, we identify key data gaps and suggest research needs to reduce uncertainty. The focus of this review is on the cancer risk to workers exposed to airborne CNT or CNF during the production and use of these materials. The findings of this review, in general, affirm those of the original evaluation on the inadequate or limited evidence of carcinogenicity for most types of CNTs and CNFs at this time, and possible carcinogenicity of one type of CNT (MWCNT-7). The key evidence gaps to be filled by research include: investigation of possible associations between in vitro and early-stage in vivo events that may be predictive of lung cancer or mesothelioma, and systematic analysis of dose-response relationships across materials, including evaluation of the influence of physico-chemical properties and experimental factors on the observation of nonmalignant and malignant endpoints.
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Affiliation(s)
- Eileen D Kuempel
- a National Institute for Occupational Safety and Health , Cincinnati , OH , USA
| | - Marie-Claude Jaurand
- b Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche , UMR 1162 , Paris , France
- c Labex Immuno-Oncology, Sorbonne Paris Cité, University of Paris Descartes , Paris , France
- d University Institute of Hematology, Sorbonne Paris Cité, University of Paris Diderot , Paris , France
- e University of Paris 13, Sorbonne Paris Cité , Saint-Denis , France
| | - Peter Møller
- f Department of Public Health , University of Copenhagen , Copenhagen , Denmark
| | - Yasuo Morimoto
- g Department of Occupational Pneumology , University of Occupational and Environmental Health , Kitakyushu City , Japan
| | | | - Kent E Pinkerton
- i Center for Health and the Environment, University of California , Davis , California , USA
| | - Linda M Sargent
- j National Institute for Occupational Safety and Health , Morgantown , West Virginia , USA
| | - Roel C H Vermeulen
- k Institute for Risk Assessment Sciences, Utrecht University , Utrecht , The Netherlands
| | - Bice Fubini
- l Department of Chemistry and "G.Scansetti" Interdepartmental Center , Università degli Studi di Torino , Torino , Italy
| | - Agnes B Kane
- m Department of Pathology and Laboratory Medicine , Brown University , Providence , RI , USA
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Kasai T, Umeda Y, Ohnishi M, Mine T, Kondo H, Takeuchi T, Matsumoto M, Fukushima S. Lung carcinogenicity of inhaled multi-walled carbon nanotube in rats. Part Fibre Toxicol 2016; 13:53. [PMID: 27737701 PMCID: PMC5064785 DOI: 10.1186/s12989-016-0164-2] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 09/30/2016] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Multi-walled carbon nanotubes (MWCNTs) constitute one of the most promising types of nanomaterials in industry today. With their increasing use, the potential toxicity and carcinogenicity of MWCNT needs to be evaluated in bioassay studies using rodents. Since humans are mainly exposed to MWCNT by inhalation, we performed a 104-week carcinogenicity study using whole-body inhalation exposure chambers with a fibrous straight type of MWCNT at concentrations of 0, 0.02, 0.2, and 2 mg/m3 using male and female F344 rats. RESULTS Lung carcinomas, mainly bronchiolo-alveolar carcinoma, and combined carcinomas and adenomas were significantly increased in males exposed to 0.2 and 2 mg/m3 MWNT-7 and in females exposed to 2 mg/m3 MWNT-7 compared to the clean air control group. However, no development of pleural mesothelioma was observed. Concentration-dependent toxic effects in the lung such as epithelial hyperplasia, granulomatous change, localized fibrosis, and alteration in BALF parameters were found in MWNT-7 treatment groups of both sexes. There were no MWNT-7-specific macroscopic findings in the other organs, including the pleura and peritoneum. Absolute and relative lung weights were significantly elevated in male rats exposed to 0.2 and 2 mg/m3 MWNT-7 and in all exposed female groups. The lung burdens of MWNT-7 were clearly increased in a concentration-dependent as well as a duration-dependent manner. CONCLUSION There is clear evidence that MWNT-7 is carcinogenic to the lungs of male and female F344 rats, however no plural mesothelioma was observed.
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Affiliation(s)
- Tatsuya Kasai
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
| | - Yumi Umeda
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
| | - Makoto Ohnishi
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
| | - Takashi Mine
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
| | - Hitomi Kondo
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
| | - Tetsuya Takeuchi
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
| | - Michiharu Matsumoto
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
| | - Shoji Fukushima
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, 2445 Hirasawa, Hadano, Kanagawa 257-0015 Japan
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Sasaki T, Asakura M, Ishioka C, Kasai T, Katagiri T, Fukushima S. In vitro chromosomal aberrations induced by various shapes of multi-walled carbon nanotubes (MWCNTs). J Occup Health 2016; 58:622-631. [PMID: 27725379 PMCID: PMC5373912 DOI: 10.1539/joh.16-0099-oa] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Objectives: IARC has classified one type of multi-walled carbon nanotubes (MWCNTs), MWNT-7, as possibly carcinogenic to humans (Group 2B); however, other types of MWCNT were categorized as not classifiable as to their carcinogenicity to humans (Group 3). In vitro chromosomal aberration assays of MWNT-7 showed polyploid formation but not structural abnormalities. This study investigated the influence of the shape and size of MWCNT on in vitro induction of chromosomal aberrations. Methods: Microscopic analysis and viable cell counting were used to assay for chromosomal aberrations and cytotoxicity induced in a Chinese hamster lung cell line (CHL/IU) exposed to different MWCNTs. Results: Using scanning electron microscopy, seven MWCNTs were classified into three types: straight fibrous, curved fibrous, and tangled. The straight fibrous MWCNTs were the strongest inducers of polyploidy and the most cytotoxic among the three types of MWCNTs. The curved fibrous MWCNTs induced more polyploidy than the tangled MWCNTs, and the cytotoxicity of both types seemed to be a reflection of their induction of polyploidy. None of the seven MWCNTs induced structural chromosomal aberrations. Conclusion: The non-clastogenicity of the MWCNTs indicates that the MWCNTs may not interact directly with DNA. Since the straight fibrous MWCNTs, which exhibit a structure similar to asbestos, were the strongest inducers of polyploidy, MWCNT shape may be an important factor in induction of polyploidy. We hypothesize that CHL/IU cells endocytosed MWCNTs and formed endosomes with shapes corresponding to those of the endocytosed MWCNTs, and that the long axis diameter of the endosome is important in the capability of MWCNTs to induce polyploidy.
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Affiliation(s)
- Toshiaki Sasaki
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety
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Gholamine B, Karimi I, Salimi A, Mazdarani P, Becker LA. Neurobehavioral toxicity of carbon nanotubes in mice. Toxicol Ind Health 2016; 33:340-350. [DOI: 10.1177/0748233716644381] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Objectives: The aim of this study was to evaluate neurobehavioral toxicity of single-walled (SWNTs) and multiwalled carbon nanotubes (MWNTs) in mice. Methods: Male NMRI mice were randomized into 5 groups ( n = 10 each): Normal control (NC) group was injected intraperitoneally (i.p.) with phosphate-buffered saline (PBS) solution (pH 7.8; ca. 1 mL), MW80 and MW800 groups were injected with either i.p. 80 or 800 mg kg−1 MWNTs suspended in 1 mL of PBS and SW80 and SW800 groups were injected with either i.p. 80 or 800 mg kg−1 SWNTs suspended in 1 mL of PBS. After 2 weeks, five mice from each group were evaluated for brain-derived neurotrophic factor (BDNF) messenger RNA expression and protein content of brain tissues. Locomotion, anxiety, learning and memory, and depression were measured by open field test (OFT), elevated plus-maze (EPM), object recognition test (ORT), and forced swimming test (FST), respectively. Results: Ambulation time and center arena time in the OFT did not change among groups. In the EPM paradigm, SWNTs (800 mg kg−1) and MWNTs (80 and 800 mg kg−1) showed an anxiogenic effect. In ORT, MWNTs (80 mg kg−1) increased the discrimination ratio while in FST, MWNTs showed a depressant effect as compared to vehicle. The BDNF gene expression in mice treated with 80 and 800 mg kg−1 SWNTs or 80 mg kg−1 MWNTs decreased as compared to NC mice although BDNF gene expression increased in mice that were treated with 800 mg kg−1 MWNTs. The whole brain BDNF protein content did not change among groups. Conclusion: Our study showed that i.p. exposure to carbon nanotubes (CNTs) may result in behavioral toxicity linked with expression of depression or anxiety that depends on the type of CNTs. In addition, exposure to CNTs changed BDNF gene expression.
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Affiliation(s)
- Babak Gholamine
- Department of Pharmacology, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Islamic Republic of Iran
- Department of Pharmacology, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Isaac Karimi
- Department of Basic Veterinary Sciences, Laboratory of Molecular and Cellular Biology, Faculty of Veterinary Medicine, Razi University, Kermanshah, Islamic Republic of Iran
- Department of Biology, Faculty of Science, Razi University, Kermanshah, Islamic Republic of Iran
| | - Amir Salimi
- Department of Pharmacology, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Islamic Republic of Iran
| | - Parisa Mazdarani
- Department of Basic Veterinary Sciences, Laboratory of Molecular and Cellular Biology, Faculty of Veterinary Medicine, Razi University, Kermanshah, Islamic Republic of Iran
| | - Lora A Becker
- Department of Psychology and Neuroscience, University of Evansville, Evansville, IN, USA
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Akyıl D, Eren Y, Konuk M, Dere H, Serteser A. Genotoxic evaluation of Halfenprox using the human peripheral lymphocyte micronucleus assay and the Ames test. Drug Chem Toxicol 2016; 40:191-195. [PMID: 27387265 DOI: 10.1080/01480545.2016.1193865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The genotoxicity and mutagenicity of Halfenprox, a synthetic pyrethroid insecticide and acaricide, was assessed using two standard genotoxicity assays of the Salmonella typhimurium mutagenicity assay (Ames test) and in vitro micronucleus (MN) assay in human peripheral lymphocytes. In the Ames test, Salmonella strains TA98 and TA100 were treated with or without S9 fraction. The doses of Halfenprox were 6.25, 12.5, 25, 50, and 100 μg/plate and test materials were dissolved in DMSO. The concentrations of Halfenprox did not show mutagenic activity on both strains with and without S9 fraction. The MN assay was used to investigate the genotoxic effects of Halfenprox in human peripheral lymphocytes treated with 250, 500, 750, and 1000 μg/ml concentrations of Halfenprox for 24 and 48 h, and at 1000 μg/ml the concentration was significantly increased and the MN formation was compared with the negative control for both treatment periods. In addition, a significant decrease of the nuclear devision index (NDI) values at the higher concentrations of Halfenprox and at both treatment periods was observed.
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Affiliation(s)
- Dilek Akyıl
- a Department of Biology , Faculty of Arts and Sciences, Afyon Kocatepe University , Afyonkarahisar , Turkey
| | - Yasin Eren
- b Department of Science , Faculty of Education, Suleyman Demirel University , Isparta , Turkey , and
| | - Muhsin Konuk
- c Department of Molecular Biology and Genetics (English) , Faculty of Engineering and Natural Sciences, Üsküdar University , Istanbul , Turkey
| | - Hatice Dere
- a Department of Biology , Faculty of Arts and Sciences, Afyon Kocatepe University , Afyonkarahisar , Turkey
| | - Ahmet Serteser
- a Department of Biology , Faculty of Arts and Sciences, Afyon Kocatepe University , Afyonkarahisar , Turkey
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Vales G, Rubio L, Marcos R. Genotoxic and cell-transformation effects of multi-walled carbon nanotubes (MWCNT) following in vitro sub-chronic exposures. JOURNAL OF HAZARDOUS MATERIALS 2016; 306:193-202. [PMID: 26736170 DOI: 10.1016/j.jhazmat.2015.12.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 11/23/2015] [Accepted: 12/14/2015] [Indexed: 06/05/2023]
Abstract
BEAS-2B cells were sub-chronically exposed (up to 4 weeks) to low doses of multi-walled carbon nanotubes (MWCNT, NM403). Genotoxic effects were evaluated using the comet and the micronucleus (MN) assays at three different time-points. The expression of different interleukins (IL) such as IL-1B, IL-6 and IL-8, as well as HO-1 as stress marker, was assessed after 3 weeks treatments. As a hallmark biomarker of cell-transforming ability we used the soft-agar assay, which detects anchorage-independent cell growth. Our results show high levels of intracellular reactive oxygen species (ROS) associated to MWCNT exposure. Nevertheless, an important proportion of these ROS levels seems to be associated to solubilized metals contaminants present in NM403, more than to the internalized MWCNT. No primary DNA damage was obtained in the Comet assay although significant levels of chromosome damage were detected using the micronucleus assay. A significant decrease in the expression of the studied cytokines was observed and significant increases in the number of induced colonies were obtained when the ability of induce anchorage-independent growth was determined. These results show that chromosome damage and reducing inflammatory signalling correlated with an increase in attachment-independent growth associated with sub-chronic MWCNT exposure.
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Affiliation(s)
- Gerard Vales
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Laura Rubio
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Ricard Marcos
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Bellaterra, Spain; CIBER Epidemiología y Salud Pública, Instituto de Salud Carlos III, Madrid, Spain.
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Catalán J, Siivola KM, Nymark P, Lindberg H, Suhonen S, Järventaus H, Koivisto AJ, Moreno C, Vanhala E, Wolff H, Kling KI, Jensen KA, Savolainen K, Norppa H. In vitroandin vivogenotoxic effects of straight versus tangled multi-walled carbon nanotubes. Nanotoxicology 2016; 10:794-806. [DOI: 10.3109/17435390.2015.1132345] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Nakanishi J, Morimoto Y, Ogura I, Kobayashi N, Naya M, Ema M, Endoh S, Shimada M, Ogami A, Myojyo T, Oyabu T, Gamo M, Kishimoto A, Igarashi T, Hanai S. Risk Assessment of the Carbon Nanotube Group. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2015; 35:1940-56. [PMID: 25943334 PMCID: PMC4736668 DOI: 10.1111/risa.12394] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
This study assessed the health risks via inhalation and derived the occupational exposure limit (OEL) for the carbon nanotube (CNT) group rather than individual CNT material. We devised two methods: the integration of the intratracheal instillation (IT) data with the inhalation (IH) data, and the "biaxial approach." A four-week IH test and IT test were performed in rats exposed to representative materials to obtain the no observed adverse effect level, based on which the OEL was derived. We used the biaxial approach to conduct a relative toxicity assessment of six types of CNTs. An OEL of 0.03 mg/m(3) was selected as the criterion for the CNT group. We proposed that the OEL be limited to 15 years. We adopted adaptive management, in which the values are reviewed whenever new data are obtained. The toxicity level was found to be correlated with the Brunauer-Emmett-Teller (BET)-specific surface area (BET-SSA) of CNT, suggesting the BET-SSA to have potential for use in toxicity estimation. We used the published exposure data and measurement results of dustiness tests to compute the risk in relation to particle size at the workplace and showed that controlling micron-sized respirable particles was of utmost importance. Our genotoxicity studies indicated that CNT did not directly interact with genetic materials. They supported the concept that, even if CNT is genotoxic, it is secondary genotoxicity mediated via a pathway of genotoxic damage resulting from oxidative DNA attack by free radicals generated during CNT-elicited inflammation. Secondary genotoxicity appears to involve a threshold.
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Affiliation(s)
- Junko Nakanishi
- Research Institute of Science for Safety and SustainabilityNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Yasuo Morimoto
- Institute of Industrial Ecological SciencesUniversity of Occupational and Environmental Health, Japan (UOEH)KitakyushuJapan
| | - Isamu Ogura
- Research Institute of Science for Safety and SustainabilityNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Norihiro Kobayashi
- Division of Environmental ChemistryNational Institute of Health SciencesTokyoJapan
| | - Masato Naya
- Public Interest Incorporated Foundation BioSafety Research Center (BSRC)IwataJapan
| | - Makoto Ema
- Research Institute of Science for Safety and SustainabilityNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Shigehisa Endoh
- Research Institute for Environmental Management TechnologyNational Institute of Advanced Industrial Science and TechnologyTsukubaJapan
| | - Manabu Shimada
- Department of Chemical Engineering, Faculty of EngineeringHiroshima UniversityHigashihiroshimaJapan
| | - Akira Ogami
- Institute of Industrial Ecological SciencesUniversity of Occupational and Environmental Health, Japan (UOEH)KitakyushuJapan
| | - Toshihiko Myojyo
- Institute of Industrial Ecological SciencesUniversity of Occupational and Environmental Health, Japan (UOEH)KitakyushuJapan
| | - Takako Oyabu
- Institute of Industrial Ecological SciencesUniversity of Occupational and Environmental Health, Japan (UOEH)KitakyushuJapan
| | - Masashi Gamo
- Research Institute of Science for Safety and SustainabilityNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Atsuo Kishimoto
- Policy Alternatives Research Institute, Graduate School of Public Policythe Tokyo UniversityTokyoJapan
| | - Takuya Igarashi
- Research Institute of Science for Safety and SustainabilityNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Sosuke Hanai
- Research Institute of Science for Safety and SustainabilityNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
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Srivastava V, Gusain D, Sharma YC. Critical Review on the Toxicity of Some Widely Used Engineered Nanoparticles. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01610] [Citation(s) in RCA: 179] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Varsha Srivastava
- Department of Chemistry,
Green Chemistry and Renewable Energy Laboratories, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi 221005, India
| | - Deepak Gusain
- Department of Chemistry,
Green Chemistry and Renewable Energy Laboratories, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi 221005, India
| | - Yogesh Chandra Sharma
- Department of Chemistry,
Green Chemistry and Renewable Energy Laboratories, Indian Institute of Technology (Banaras Hindu University) Varanasi, Varanasi 221005, India
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Cytotoxicity and genotoxicity of panel of single- and multiwalled carbon nanotubes: in vitro effects on normal Syrian hamster embryo and immortalized v79 hamster lung cells. J Toxicol 2014; 2014:872195. [PMID: 25548561 PMCID: PMC4274832 DOI: 10.1155/2014/872195] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 09/15/2014] [Accepted: 11/18/2014] [Indexed: 12/28/2022] Open
Abstract
Carbon nanotubes (CNTs) belong to a specific class of nanomaterials with unique properties. Because of their anticipated use in a wide range of industrial applications, their toxicity is of increasing concern. In order to determine whether specific physicochemical characteristics of CNTs are responsible for their toxicological effects, we investigated the cytotoxic and genotoxic effects of eight CNTs representative of each of the commonly encountered classes: single- SW-, double- DW-, and multiwalled (MW) CNTs, purified and raw. In addition, because most previous studies of CNT toxicity were conducted on immortalized cell lines, we decided to compare results obtained from V79 cells, an established cell line, with results from SHE (Syrian hamster embryo) cells, an easy-to-handle normal cell model.
After 24 hours of treatment, MWCNTs were generally found to be more cytotoxic than SW- or DWCNTs. MWCNTs also provoked more genotoxic effects. No correlation could be found between CNT genotoxicity and metal impurities, length, surface area, or induction of cellular oxidative stress, but genotoxicity was seen to increase with CNT width. The toxicity observed for some CNTs leads us to suggest that they might also act by interfering with the cell cycle, but no significant differences were observed between normal and immortalized cells.
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Özkara A, Akyıl D, Eren Y, Erdoğmuş SF, Konuk M, Sağlam E. Assessment of cytotoxic and genotoxic potential of pyracarbolid by Allium test and micronucleus assay. Drug Chem Toxicol 2014; 38:337-41. [PMID: 25275653 DOI: 10.3109/01480545.2014.966831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The present study evaluates the cytotoxic and genotoxic potential of pyracarbolid using both micronuleus (MN) assay, in human lymphocytes, and Allium cepa assay, in the root meristem cells. In Allium test, EC50 value was determined in order to selecting the test concentrations for the assay and the root tips were treated with 25 ppm (EC50/2), 50 ppm (EC50) and 100 ppm (EC50 × 2) concentrations of pyracarbolid. One percent of dimethyl sulphoxide (DMSO) and methyl methane sulfonate (MMS) were used as negative and positive controls, respectively. In the micronucleus assay, the cultures were treated with four concentrations (250, 500, 750 and 1000 µg/ml) of pyracarbolid for 24 and 48 h, negative and positive controls were also used in the experiment parallely. The results showed that mitotic index (MI) significantly reduced with increasing the pyracarbolid concentration at each exposure time. It was also obtained that prophase and metaphase index decreased significantly in all concentration at each exposure time. Anaphase index decreased as well and results were found to be statistically significant, except 24 h. A significant increase was observed in MN frequency in all concentrations and both treatment periods when compared with the controls. Pyracarbolid also caused a significant reduction in the cytokinesis block proliferation index (CBPI) in all concentration and both exposure time.
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Affiliation(s)
- Arzu Özkara
- Department of Biology, Faculty of Arts and Sciences, Afyon Kocatepe University , Afyonkarahisar , Turkey
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35
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Genotoxicity evaluation of nanosized titanium dioxide, synthetic amorphous silica and multi-walled carbon nanotubes in human lymphocytes. Toxicol In Vitro 2014; 28:60-9. [DOI: 10.1016/j.tiv.2013.06.009] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 05/15/2013] [Accepted: 06/18/2013] [Indexed: 11/24/2022]
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36
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Martinez DST, Franchi LP, Freria CM, Ferreira OP, Filho AGS, Alves OL, Takahashi CS. Carbon Nanotubes: From Synthesis to Genotoxicity. Nanotoxicology 2014. [DOI: 10.1007/978-1-4614-8993-1_6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Machado NM, Lopes JC, Saturnino RS, Fagan EB, Nepomuceno JC. Lack of mutagenic effect by multi-walled functionalized carbon nanotubes in the somatic cells of Drosophila melanogaster. Food Chem Toxicol 2013; 62:355-60. [PMID: 23994091 DOI: 10.1016/j.fct.2013.08.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 08/21/2013] [Accepted: 08/22/2013] [Indexed: 01/04/2023]
Abstract
Carbon nanotubes (CNTs) are formed by rolling up a single graphite sheet into a tube. Among the different types of CNTs, the multi-walled carbon nanotubes (MWCNTs) comprise a set of concentric nanotubes with perfect structures. Several uses for MWCNTs have been suggested to be included in biological applications such as manufacturing of biosensors, carriers of drugs. However, before these materials can be put on the market, it is necessary to know their genotoxic effects. Thus, this study aims to evaluate the mutagenicity of multi-walled carbon nanotubes (MWCNTs) functionalized in somatic cells of Drosophila melanogaster, using the somatic mutation and recombination test (SMART). This assay detects the loss of heterozygosity of marker genes expressed phenotypically on the wings of the fly. Larvae of three days were used, resulting from ST cross, with basal levels of the cytochrome P450 and larvae of high metabolic bioactivity capacity (HB cross). They were treated with different concentrations of MWCNTs functionalized. The MH descendants, analyzed in both ST and HB crosses, had no significant effects on the frequency of mutant. Based on the results and on the experimental conditions mentioned in this study, it was concluded that MWCNTs were not mutagenic in D. melanogaster.
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Affiliation(s)
- N M Machado
- Universidade Federal de Uberlândia, Instituto de Genética e Bioquímica, Bloco 2E, Campus Umuarama, Uberlândia, Minas Gerais, Brazil; Centro Universitário de Patos de Minas, Laboratório de Citogenética e Mutagênese, Patos de Minas, Minas Gerais, Brazil
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Yang N, Yang M, Bi S, Chen L, Zhu Z, Gao Y, Du Z. Cells behaviors and genotoxicity on topological surface. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3465-73. [DOI: 10.1016/j.msec.2013.04.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 02/20/2013] [Accepted: 04/16/2013] [Indexed: 12/11/2022]
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Lindberg HK, Falck GCM, Singh R, Suhonen S, Järventaus H, Vanhala E, Catalán J, Farmer PB, Savolainen KM, Norppa H. Genotoxicity of short single-wall and multi-wall carbon nanotubes in human bronchial epithelial and mesothelial cells in vitro. Toxicology 2012; 313:24-37. [PMID: 23266321 DOI: 10.1016/j.tox.2012.12.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 12/11/2012] [Accepted: 12/14/2012] [Indexed: 12/11/2022]
Abstract
Although some types of carbon nanotubes (CNTs) have been described to induce mesothelioma in rodents and genotoxic effects in various cell systems, there are few previous studies on the genotoxicity of CNTs in mesothelial cells. Here, we examined in vitro DNA damage induction by short multi-wall CNTs (MWCNTs; 10-30 nm × 1-2 μm) and single-wall CNTs (SWCNTs; >50% SWCNTs, ~40% other CNTs; <2 nm × 1-5 μm) in human mesothelial (MeT-5A) cells and bronchial epithelial (BEAS 2B) cells, using the single cell gel electrophoresis (comet) assay and the immunoslot blot assay for the detection of malondialdehyde (M1dG) DNA adducts. In BEAS 2B cells, we also studied the induction of micronuclei (MN) by the CNTs using the cytokinesis-block method. The cells were exposed to the CNTs (5-200 μg/cm(2), corresponding to 19-760 μg/ml) for 24 and 48h in the comet assay and for 48 and 72 h in the MN and M1dG assays. Transmission electron microscopy (TEM) showed more MWCNT fibres and SWCNT clusters in BEAS 2B than MeT-5A cells, but no significant differences were seen in intracellular dose expressed as area of SWCNT clusters between TEM sections of the cell lines. In MeT-5A cells, both CNTs caused a dose-dependent induction of DNA damage (% DNA in comet tail) in the 48-h treatment and SWCNTs additionally in the 24-h treatment, with a statistically significant increase at 40 μg/cm(2) of SWCNTs and (after 48 h) 80 μg/cm(2) of both CNTs. SWCNTs also elevated the level of M1dG DNA adducts at 1, 5, 10 and 40 μg/cm(2) after the 48-h treatment, but both CNTs decreased M1dG adduct level at several doses after the 72-h treatment. In BEAS 2B cells, SWCNTs induced a statistically significant increase in DNA damage at 80 and 120 μg/cm(2) after the 24-h treatment and in M1dG adduct level at 5 μg/cm(2) after 48 h and 10 and 40 μg/cm(2) after 72 h; MWCNTs did not affect the level of DNA damage but produced a decrease in M1dG adducts in the 72-h treatment. The CNTs did not affect the level of MN. In conclusion, MWCNTs and SWCNTs induced DNA damage in MeT-5A cells but showed a lower (SWCNTs) or no (MWCNTs) effect in BEAS 2B cells, suggesting that MeT-5A cells were more sensitive to the DNA-damaging effect of CNTs than BEAS 2B cells, despite the fact that more CNT fibres or clusters were seen in BEAS 2B than MeT-5A cells. M1dG DNA adducts were induced by SWCNTs but decreased after a 3-day exposure to MWCNTs and (in MeT-5A cells) SWCNTs, indicating that CNTs may lead to alterations in oxidative effects within the cells. Neither of the CNTs was able to produce chromosomal damage (MN).
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Affiliation(s)
- Hanna K Lindberg
- Nanosafety Research Center, Finnish Institute of Occupational Health, FI-00250 Helsinki, Finland; Safe New Technologies, Work Environment Development, Finnish Institute of Occupational Health, FI-00250 Helsinki, Finland.
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Ema M, Masumori S, Kobayashi N, Naya M, Endoh S, Maru J, Hosoi M, Uno F, Nakajima M, Hayashi M, Nakanishi J. In vivo comet assay of multi-walled carbon nanotubes using lung cells of rats intratracheally instilled. J Appl Toxicol 2012; 33:1053-60. [PMID: 22936419 DOI: 10.1002/jat.2810] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 07/11/2012] [Accepted: 07/11/2012] [Indexed: 12/13/2022]
Abstract
The genotoxicity of multi-walled carbon nanotubes (MWCNTs) was evaluated in vivo with comet assays using the lung cells of rats given MWCNTs. The MWCNTs were intratracheally instilled as a single dose at 0.2 or 1.0 mg kg(-1) or a repeated dose at 0.04 or 0.2 mg kg(-1) , once a week for 5 weeks, to male rats. The rats were sacrificed 3 or 24 h after the single instillation and were sacrificed 3 h after the last instillation in the repeated instillation groups. Histopathological examinations of the lungs revealed that MWCNTs caused inflammatory changes including the infiltration of macrophages and neutrophils after a single instillation and repeated instillation at both doses. In comet assays using rat lung cells, no changes in % Tail DNA were found in any group given MWCNTs. These findings indicate that MWCNTs do not have the potential to cause DNA damage in comet assays using the lung cells of rats given MWCNTs at doses causing inflammatory responses.
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Affiliation(s)
- Makoto Ema
- Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki, 305-8569, Japan.
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Snyder-Talkington BN, Qian Y, Castranova V, Guo NL. New perspectives for in vitro risk assessment of multiwalled carbon nanotubes: application of coculture and bioinformatics. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2012; 15:468-492. [PMID: 23190270 PMCID: PMC3513758 DOI: 10.1080/10937404.2012.736856] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Nanotechnology is a rapidly expanding field with wide application for industrial and medical use; therefore, understanding the toxicity of engineered nanomaterials is critical for their commercialization. While short-term in vivo studies have been performed to understand the toxicity profile of various nanomaterials, there is a current effort to shift toxicological testing from in vivo observational models to predictive and high-throughput in vitro models. However, conventional monoculture results of nanoparticle exposure are often disparate and not predictive of in vivo toxic effects. A coculture system of multiple cell types allows for cross-talk between cells and better mimics the in vivo environment. This review proposes that advanced coculture models, combined with integrated analysis of genome-wide in vivo and in vitro toxicogenomic data, may lead to development of predictive multigene expression-based models to better determine toxicity profiles of nanomaterials and consequent potential human health risk due to exposure to these compounds.
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Affiliation(s)
- Brandi N. Snyder-Talkington
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Yong Qian
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Vincent Castranova
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Nancy L. Guo
- Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
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