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Bernardeschi M, Guidi P, Palumbo M, Genovese M, Alfè M, Gargiulo V, Lucchesi P, Scarcelli V, Falleni A, Bergami E, Freyria FS, Bonelli B, Corsi I, Frenzilli G. Suitability of Nanoparticles to Face Benzo(a)pyrene-Induced Genetic and Chromosomal Damage in M. galloprovincialis. An In Vitro Approach. Nanomaterials (Basel) 2021; 11:1309. [PMID: 34063431 PMCID: PMC8155950 DOI: 10.3390/nano11051309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 11/17/2022]
Abstract
Benzo(a)pyrene (B(a)P) is a well-known genotoxic agent, the removal of which from environmental matrices is mandatory, necessitating the application of cleaning strategies that are harmless to human and environmental health. The potential application of nanoparticles (NPs) in the remediation of polluted environments is of increasing interest. Here, specifically designed NPs were selected as being non-genotoxic and able to interact with B(a)P, in order to address the genetic and chromosomal damage it produces. A newly formulated pure anatase nano-titanium (nano-TiO2), a commercial mixture of rutile and anatase, and carbon black-derived hydrophilic NPs (HNP) were applied. Once it had been ascertained that the NPs selected for the work did not induce genotoxicity, marine mussel gill biopsies were exposed in vitro to B(a)P (2 μg/mL), alone and in combination with the selected NPs (50 µg/mL nano-TiO2, 10 µg/mL HNP). DNA primary reversible damage was evaluated by means of the Comet assay. Chromosomal persistent damage was assessed on the basis of micronuclei frequency and nuclear abnormalities by means of the Micronucleus-Cytome assay. Transmission Electron Microscopy (TEM) was performed to investigate the mechanism of action exerted by NPs. Pure Anatase n-TiO2 was found to be the most suitable for our purpose, as it is cyto- and genotoxicity free and able to reduce the genetic and chromosomal damage associated with exposure to B(a)P.
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Affiliation(s)
- Margherita Bernardeschi
- Section of Applied Biology and Genetics and INSTM Local Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.B.); (P.G.); (M.P.); (P.L.); (V.S.); (A.F.)
| | - Patrizia Guidi
- Section of Applied Biology and Genetics and INSTM Local Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.B.); (P.G.); (M.P.); (P.L.); (V.S.); (A.F.)
| | - Mara Palumbo
- Section of Applied Biology and Genetics and INSTM Local Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.B.); (P.G.); (M.P.); (P.L.); (V.S.); (A.F.)
| | - Massimo Genovese
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50121 Florence, Italy;
| | - Michela Alfè
- Institute of Science and Technology for Sustainable Energy and Mobility STEMS-CNR, 80126 Naples, Italy; (M.A.); (V.G.)
| | - Valentina Gargiulo
- Institute of Science and Technology for Sustainable Energy and Mobility STEMS-CNR, 80126 Naples, Italy; (M.A.); (V.G.)
| | - Paolo Lucchesi
- Section of Applied Biology and Genetics and INSTM Local Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.B.); (P.G.); (M.P.); (P.L.); (V.S.); (A.F.)
| | - Vittoria Scarcelli
- Section of Applied Biology and Genetics and INSTM Local Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.B.); (P.G.); (M.P.); (P.L.); (V.S.); (A.F.)
| | - Alessandra Falleni
- Section of Applied Biology and Genetics and INSTM Local Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.B.); (P.G.); (M.P.); (P.L.); (V.S.); (A.F.)
| | - Elisa Bergami
- Earth and Environmental Sciences and INSTM Local Unit, Department of Physical, University of Siena, 53100 Siena, Italy; (E.B.); (I.C.)
| | - Francesca S. Freyria
- INSTM Unit of Torino-Politecnico, Department of Applied Science and Technology, 10129 Politecnico di Torino, Italy; (F.S.F.); (B.B.)
| | - Barbara Bonelli
- INSTM Unit of Torino-Politecnico, Department of Applied Science and Technology, 10129 Politecnico di Torino, Italy; (F.S.F.); (B.B.)
| | - Ilaria Corsi
- Earth and Environmental Sciences and INSTM Local Unit, Department of Physical, University of Siena, 53100 Siena, Italy; (E.B.); (I.C.)
| | - Giada Frenzilli
- Section of Applied Biology and Genetics and INSTM Local Unit, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.B.); (P.G.); (M.P.); (P.L.); (V.S.); (A.F.)
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Mesic A, Nefic H. Assessment of the genotoxicity and cytotoxicity in environmentally exposed human populations to heavy metals using the cytokinesis-block micronucleus cytome assay. Environ Toxicol 2015; 30:1331-1342. [PMID: 24861359 DOI: 10.1002/tox.22004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Revised: 05/04/2014] [Accepted: 05/09/2014] [Indexed: 06/03/2023]
Abstract
The cytokinesis-block micronucleus cytome (CBMN-Cyt) assay was developed as a system for evaluating DNA damage, cytostasis, and cytotoxicity. The aim of the present study was to estimate levels of micronuclei (MNi), nucleoplasmic bridges (NPBs), nuclear buds (NBUDs), cell death (apoptosis/necrosis), nuclear division index, and nuclear division cytotoxicity index values in the peripheral blood lymphocytes of environmentally exposed subjects to heavy metals from five Bosnian regions, characterized by different exposure to heavy metals. The study was performed using CBMN-Cyt assay, considering factors, such as age, gender and smoking habits and their possible effects on analyzed parameters. In total, 104 healthy subjects were selected (49.04% females and 50.96% males; average age, 35.41 years; 51.92% smokers and 48.08% nonsmokers). There was significant difference between the frequency of NBUDs in Tuzla as compared to the control group. Furthermore, there was observed a statistically significant difference for the frequency of NPBs between Zenica, Olovo, and Kakanj when compared with the controls. Males showed a significantly higher number of apoptotic cells than females in controls. There were significant differences between smokers and nonsmokers in the frequency of NPBs in controls (higher in nonsmokers) and necrotic cells in Olovo (higher in nonsmokers). The pack years of smoking significantly influenced the number of necrotic cells in controls and the frequency of NBUDs in the overall sample. The results of the present study provide evidence of significantly increased frequency of NPBs and NBUDs in exposed subjects, suggesting that these endpoints are highly sensitive markers for measuring genotoxicity.
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Affiliation(s)
- Aner Mesic
- Department of Biology, Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Hilada Nefic
- Department of Biology, Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
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Holland N, Davé V, Venkat S, Wong H, Donde A, Balmes JR, Arjomandi M. Ozone inhalation leads to a dose-dependent increase of cytogenetic damage in human lymphocytes. Environ Mol Mutagen 2015; 56:378-87. [PMID: 25451016 PMCID: PMC4406783 DOI: 10.1002/em.21921] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 10/27/2014] [Indexed: 05/17/2023]
Abstract
Ozone is an important constituent of ambient air pollution and represents a major public health concern. Oxidative injury due to ozone inhalation causes the generation of reactive oxygen species and can be genotoxic. To determine whether ozone exposure causes genetic damage in peripheral blood lymphocytes, we used a well-validated cytokinesis-block micronucleus Cytome assay. Frequencies of micronuclei (MN) and nucleoplasmic bridges (NB) were used as indicators of cytogenetic damage. Samples were obtained from 22 non-smoking healthy subjects immediately before and 24-hr after controlled 4-hr exposures to filtered air, 100 ppb, and 200 ppb ozone while exercising in a repeated-measure study design. Inhalation of ozone at different exposure levels was associated with a significant dose-dependent increase in MN frequency (P < 0.0001) and in the number of cells with more than one MN per cell (P < .0005). Inhalation of ozone also caused an increase in the number of apoptotic cells (P = 0.002). Airway neutrophilia was associated with an increase in MN frequency (P = 0.033) independent of the direct effects of ozone exposure (P < 0.0001). We also observed significant increases in both MN and NB frequencies after exercise in filtered air, suggesting that physical activity is also an important inducer of oxidative stress. These results corroborate our previous findings that cytogenetic damage is associated with ozone exposure, and show that damage is dose-dependent. Further study of ozone-induced cytogenetic damage in airway epithelial cells could provide evidence for the role of oxidative injury in lung carcinogenesis, and help to address the potential public health implications of exposures to oxidant environments.
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Affiliation(s)
- Nina Holland
- School of Public Health, University of California, Berkeley
| | - Veronica Davé
- School of Public Health, University of California, Berkeley
| | - Subha Venkat
- School of Public Health, University of California, Berkeley
| | - Hofer Wong
- Human Exposure Laboratory, Department of Medicine, University of California, San Francisco
| | - Aneesh Donde
- Human Exposure Laboratory, Department of Medicine, University of California, San Francisco
| | - John R Balmes
- School of Public Health, University of California, Berkeley
- Human Exposure Laboratory, Department of Medicine, University of California, San Francisco
| | - Mehrdad Arjomandi
- Human Exposure Laboratory, Department of Medicine, University of California, San Francisco
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Olivero OA, Ongele MO, Braun HM, Marrogi A, Divi K, Mitchell JB, Poirier MC. Selective protection of zidovudine-induced DNA-damage by the antioxidants WR-1065 and tempol. Environ Mol Mutagen 2014; 55:566-572. [PMID: 24833597 PMCID: PMC7673230 DOI: 10.1002/em.21872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/03/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
The cytokinesis-block micronucleus cytome (CBMN) assay, introduced by Fenech, was used to demonstrate different types of DNA damage in MOLT-3 human lymphoblastoid cells exposed to 10 μM zidovudine (AZT). In addition, we explored the cytoprotective potential of two antioxidants, WR-1065 and Tempol, to decrease AZT-induced genotoxicity. Binucleated cells, arrested by Cytochalasin B (Cyt B), were evaluated for micronuclei (MN), caused by DNA damage or chromosomal loss, and chromatin nucleoplasmic bridges (NPBs), caused by telomere attrition. Additionally, nuclear buds (NBUDs), caused by amplified DNA, and apoptotic and necrotic (A/N) cells were scored. We hypothesized that AZT exposure would increase the frequency of genotoxic end points, and that the antioxidants Tempol and WR-1065 would protect against AZT-induced genotoxicity. MOLT-3 cells were exposed to 0 or 10 µM AZT for a total of 76 hr. After the first 24 hr, 0 or 5 µM WR-1065 and/or 0 or 200 µM Tempol were added for the remainder of the experiment. For the last 28 hr (of 76 hr), Cyt B was added to arrest replication after one cell division, leaving a predominance of binucleated cells. The nuclear division index (NDI) was similar for all treatment groups, indicating that the exposures did not alter cell viability. MOLT-3 cells exposed to AZT alone had significant (P < 0.05) increases in MN and NBs, compared to unexposed cells. Both Tempol and WR-1065 protected against AZT-induced MN formation (P < 0.003 for both), and WR-1065, but not Tempol, reduced the levels of A/N (P = 0.041). In cells exposed to AZT/Tempol there were significantly reduced levels of NBUDs, compared to cells exposed to AZT alone (P = 0.015). Cells exposed to AZT/WR-1065 showed reduced levels of NPBs, compared to cells exposed to AZT alone (P = 0.037). Thus WR-1065 and Tempol protected MOLT-3 cells against specific types of AZT-induced DNA damage.
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Affiliation(s)
- Ofelia A. Olivero
- Carcinogen–DNA Interactions Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Michael O. Ongele
- Carcinogen–DNA Interactions Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Hannan M. Braun
- Carcinogen–DNA Interactions Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Ariadna Marrogi
- Carcinogen–DNA Interactions Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Kathyiani Divi
- Carcinogen–DNA Interactions Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - James B. Mitchell
- Tumor Biology Section, Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Miriam C. Poirier
- Carcinogen–DNA Interactions Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
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