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Zhang M, Xia H, Yu M, Ju L, Xiao Y, Zhu L. Role of PARP1 on DNA damage induced by mineral silicate chrysotile in bronchial epithelial and pleural mesothelial cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:40871-40878. [PMID: 33770358 DOI: 10.1007/s11356-021-13464-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
To investigate whether poly (ADP ribose) polymerase-1 (PARP1) is involved in chrysotile-induced DNA damage in pleural mesothelial cells (MeT-5A) and bronchial epithelial cells (BEAS-2B), two PARP1-deficient cell lines were established. Efficiencies of RNA interference on PARP1 were detected by western blot and qPCR. Here, normal cells and PARP1-deficient cells were exposed to chrysotile, and DNA damage and DNA repair were detected by alkaline comet assay. All cells were treated with chrysotile at the indicated concentrations (5, 10, 20, and 40 μg/cm2) for 24 h and then the DNA repair capacity was observed for 12 and 24 h, respectively. The results showed that chrysotile caused DNA damage at an obvious dose-dependent manner in MeT-5A and BEAS-2B cells. In addition, MeT-5A cells had more persistent DNA damage than BEAS-2B. Compared to normal cells, the PARP1-deficient cells were more sensitive to DNA damage caused by chrysotile. In DNA repair experiments, all cell lines recovered from the damage over time. The results of relative repair percentage (RRP) of MeT-5A and BEAS-2B were higher than those of MeT-5A shPARP1 and BEAS-2B shPARP1 cells at all experimental concentrations (except 5 μg/cm2) at 12-h repair. However, RRP of BEAS-2B and BEAS-2B shPARP1 tended to be closer, and RRP of MeT-5A shPARP1 was still lower than that of MeT-5A at 24-h repair. All results suggest that PARP1 plays an important role in early repair of DNA damage in BEAS-2B and MeT-5A cells exposed to chrysotile.
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Affiliation(s)
- Min Zhang
- Hangzhou Medical College, Tianmushan Road 182, Zhejiang, 310007, Hangzhou, China
| | - Hailin Xia
- Hangzhou Medical College, Tianmushan Road 182, Zhejiang, 310007, Hangzhou, China
| | - Min Yu
- Hangzhou Medical College, Tianmushan Road 182, Zhejiang, 310007, Hangzhou, China
| | - Li Ju
- Hangzhou Medical College, Tianmushan Road 182, Zhejiang, 310007, Hangzhou, China
| | - Yun Xiao
- Hangzhou Medical College, Tianmushan Road 182, Zhejiang, 310007, Hangzhou, China
| | - Lijin Zhu
- Hangzhou Medical College, Tianmushan Road 182, Zhejiang, 310007, Hangzhou, China.
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Cui Y, Zha Y, Li T, Bai J, Tang L, Deng J, He R, Dong F, Zhang Q. Oxidative effects of lungs in Wistar rats caused by long-term exposure to four kinds of China representative chrysotile. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:18708-18718. [PMID: 31055741 DOI: 10.1007/s11356-019-04978-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/25/2019] [Indexed: 05/24/2023]
Abstract
Chrysotile accounts for some 90% to 95% of all the asbestos used worldwide. Scientific evidences have shown that asbestos (including chrysotile) exposure is associated with increased rates of lung cancer, asbestosis, and mesothelioma. However, molecular mechanisms underlying the toxicity effects of chrysotile are not clear. This study evaluated the oxidative stress in chronic lung toxicity caused by the intratracheal instillation (IT) of four kinds China representative chrysotile once a month for 12 months in Wistar rats. These results indicated that chrysotile exposure led to an obvious increase in lung mass and slowed the growth of body mass. Inflammation and fibrosis were observed by hematoxylin-eosin (HE) staining. Exposure to chrysotile significantly increased the accumulation of reactive oxygen species (ROS) and the level of lipid peroxidation and decreased antioxidant capacity in lung tissues. Furthermore, 1-6-month chrysotile exposure activated heme oxygenase-1 (HO-1) and heat shock protein 70 (HSP70) expression, whereas 12-month exposure caused significant decreases of two-factor expression levels in XK and MN groups when compared to negative control group. Therefore, our results suggested that chronic chrysotile pulmonary injury in Wistar rats is triggered by oxidative damage. Meanwhile, the oxidative damage of MN and XK was stronger than that of SSX and AKS, and the difference of oxidative damage in four chrysotile could have been brought by its properties, morphology, chemical composition, and particle size. With all the above mentioned in view, we hope that the revealed data in the experiment could contribute to the progress of further researches on the toxicity and mechanism of chrysotile.
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Affiliation(s)
- Yan Cui
- School of Public Health, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Yuxin Zha
- School of Public Health, Southwest Medical University, Luzhou, 646000, Sichuan, China
- Sichuan Center For Disease Control and Prevention, Institute of Chronic Non-communicable Diseases, Chengdu, 610041, Sichuan, China
| | - Tao Li
- Key Laboratory of Ministry of Education, Myocardial electrical laboratory, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Jun Bai
- School of Public Health, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Lanlan Tang
- School of Public Health, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Jianjun Deng
- Department of Clinical Laboratory, 404 Hospitals of Mianyang, Mianyang, 621000, Sichuan, China
| | - Renjiang He
- School of Public Health, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Faqin Dong
- Key Laboratory of Solid Waste Treatment and the Resource Recycle, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, China.
| | - Qingbi Zhang
- School of Public Health, Southwest Medical University, Luzhou, 646000, Sichuan, China.
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Ospina D, Villegas VE, Rodríguez-Leguizamón G, Rondón-Lagos M. Analyzing biological and molecular characteristics and genomic damage induced by exposure to asbestos. Cancer Manag Res 2019; 11:4997-5012. [PMID: 31239765 PMCID: PMC6556979 DOI: 10.2147/cmar.s205723] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 04/19/2019] [Indexed: 12/24/2022] Open
Abstract
Asbestos is one of the most important occupational carcinogens. Currently, about 125 million people worldwide are exposed to asbestos in the workplace. According to global estimates, at least 107,000 people die each year from lung cancer, mesothelioma, and asbestosis as a result of occupational exposure to asbestos. The high pathogenicity of this material is currently known, being associated with the development of pulmonary diseases, of which lung cancer is the main cause of death due to exposure to this mineral. Pulmonary diseases related to asbestos are a common clinical problem and a major health concern worldwide. Extensive research has identified many important pathogenic mechanisms; however, the precise molecular mechanisms involved, and the generated genomic damage that lead to the development of these diseases, are not completely understood. The modes of action that underlie this type of disease seem to differ depending on the type of fiber, lung clearance, and genetics. This evidences the need to increase our knowledge about these effects on human health. This review focuses on the characteristics of asbestos and the cellular and genomic damage generated in humans via exposure.
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Affiliation(s)
- Diana Ospina
- Biology Program, Faculty of Natural Sciences and Mathematics, Universidad del Rosario, Bogotá111221,Colombia
| | - Victoria Eugenia Villegas
- Biology Program, Faculty of Natural Sciences and Mathematics, Universidad del Rosario, Bogotá111221,Colombia
| | - Giovanni Rodríguez-Leguizamón
- Hospital Universitario Mayor Méderi – Universidad del Rosario. School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, 111221, Colombia
| | - Milena Rondón-Lagos
- School of Biological Sciences, Universidad Pedagógica y Tecnológica de Colombia, Tunja150003, Colombia
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Cui Y, Huang L, Huo T, Dong F, Wang G, Zhang Q. Man-made mineral fiber effects on the expression of anti-oncogenes P53 and P16 and oncogenes C-JUN and C-FOS in the lung tissue of Wistar rats. Toxicol Ind Health 2019; 35:431-444. [PMID: 31131716 DOI: 10.1177/0748233719851699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Man-made mineral fibers (MMMFs) are substitutes for asbestos. MMMFs are widely used as insulation, but their molecular mechanisms underlying the tumorigenic effects in vivo have been poorly studied. For this reason, this work aimed to explore the properties and carcinogenic molecular mechanisms of MMMFs. The three MMMFs, rock wool (RW), glass fibers (GFs), and ceramic fibers (CFs), were prepared into respirable dust. Particle size, morphology, and chemical composition were analyzed by laser particle analyzer, scanning electron microscope, and X-ray fluorescence spectrometer, respectively. The Wistar rats were administered multiple intratracheal instillations of three MMMFs once a month. Then, several parameters (e.g. body mass, lung mass, and lung histology) were measured at 1, 3, and 6 months. After that, levels of P53, P16, C-JUN, and C-FOS mRNA and protein were measured by quantitative real-time reverse transcription polymerase chain reaction and Western blotting. This work found that exposure to MMMFs could influence the growth of body mass and increase lung mass. General conditions showed white nodules and irregular atrophy. In addition, MMMFs could lead to inactivation of anti-oncogene P16 and activation of proto-oncogenes (C-JUN and C-FOS) in the mRNA and protein levels, in which GF and CF were more obvious compared with RW. The effect of MMMFs was different, which may be related to the physical and chemical characteristics of different MMMFs. In conclusion, MMMFs (GF and CF) could induce an unbalanced expression of cancer-related genes in the lung tissues of rats. The understanding of the determinants of toxicity and carcinogenicity provides a scientific basis for developing and introducing new safer MMMF products, and the present study provides some useful insights into the carcinogenic mechanism of MMMFs.
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Affiliation(s)
- Yan Cui
- 1 School of Public Health, Southwest Medical University, Luzhou, China
| | - Liuwen Huang
- 2 School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Tingting Huo
- 3 Key Laboratory of Solid Waste Treatment and the Resource Recycle, Southwest University of Science and Technology, Mianyang, China
| | - Faqin Dong
- 3 Key Laboratory of Solid Waste Treatment and the Resource Recycle, Southwest University of Science and Technology, Mianyang, China
| | - Guojun Wang
- 4 Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qingbi Zhang
- 1 School of Public Health, Southwest Medical University, Luzhou, China
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Hadley JG, Crane AE. Letter to the Editor on "Chrysotile and rock wool fibers induce chromosome aberrations and DNA damage in V79 lung fibroblast cells". ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:3091-3093. [PMID: 29349738 PMCID: PMC6338703 DOI: 10.1007/s11356-018-1210-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/02/2018] [Indexed: 06/07/2023]
Affiliation(s)
- John G Hadley
- North America Insulation Manufacturers Association, 11 Canal Center Plaza, #103, Alexandria, VA 22314, USA
| | - Angus E Crane
- North America Insulation Manufacturers Association, 11 Canal Center Plaza, #103, Alexandria, VA 22314, USA.
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