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Taiyab A, Ashraf A, Sulaimani MN, Rathi A, Shamsi A, Hassan MI. Role of MTH1 in oxidative stress and therapeutic targeting of cancer. Redox Biol 2024; 77:103394. [PMID: 39418911 DOI: 10.1016/j.redox.2024.103394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2024] [Revised: 10/08/2024] [Accepted: 10/10/2024] [Indexed: 10/19/2024] Open
Abstract
Cancer cells maintain high levels of reactive oxygen species (ROS) to drive their growth, but ROS can trigger cell death through oxidative stress and DNA damage. To survive enhanced ROS levels, cancer cells activate their antioxidant defenses. One such defense is MTH1, an enzyme that prevents the incorporation of oxidized nucleotides into DNA, thus preventing DNA damage and allowing cancer to proliferate. MTH1 levels are often elevated in many cancers, and thus, inhibiting MTH1 is an attractive strategy for suppressing tumor growth and metastasis. Targeted MTH1 inhibition can induce DNA damage in cancer cells, exploiting their vulnerability to oxidative stress and selectively targeting them for destruction. Targeting MTH1 is promising for cancer treatment because normal cells have lower ROS levels and are less dependent on these pathways, making the approach both effective and specific to cancer. This review aims to investigate the potential of MTH1 as a therapeutic target, especially in cancer treatment, offering detailed insights into its structure, function, and role in disease progression. We also discussed various MTH1 inhibitors that have been developed to selectively induce oxidative damage in cancer cells, though their effectiveness varies. In addition, this review provide deeper mechanistic insights into the role of MTH1 in cancer prevention and oxidative stress management in various diseases.
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Affiliation(s)
- Aaliya Taiyab
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Anam Ashraf
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Md Nayab Sulaimani
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Aanchal Rathi
- Department of Biotechnology, Faculty of Life Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Anas Shamsi
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, P.O. Box 346, United Arab Emirates.
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India.
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Yu N, Su M, Wang J, Liu Y, Yang J, Zhang J, Wang M. Long-Term Exposure of Fresh and Aged Nano Zinc Oxide Promotes Hepatocellular Carcinoma Malignancy by Up-Regulating Claudin-2. Int J Nanomedicine 2024; 19:9989-10008. [PMID: 39371475 PMCID: PMC11453161 DOI: 10.2147/ijn.s478279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Accepted: 09/26/2024] [Indexed: 10/08/2024] Open
Abstract
Background Tumor development and progression is a long and complex process influenced by a combination of intrinsic (eg, gene mutation) and extrinsic (eg, environmental pollution) factors. As a detoxification organ, the liver plays an important role in human exposure and response to various environmental pollutants including nanomaterials (NMs). Hepatocellular carcinoma (HCC) is one of the most common malignant tumors and remains a serious threat to human health. Whether NMs promote liver cancer progression remains elusive and assessing long-term exposure to subtoxic doses of nanoparticles (NPs) remains a challenge. In this study, we focused on the promotional effects of nano zinc oxide (nZnO) on the malignant progression of human HCC cells HepG2, especially aged nZnO that has undergone physicochemical transformation. Methods In in vitro experiments, we performed colony forming efficiency, soft agar colony formation, and cell migration/invasion assays on HepG2 cells that had been exposed to a low dose of nZnO (1.5 μg/mL) for 3 or 4 months. In in vivo experiments, we subcutaneously inoculated HepG2 cells that had undergone long-term exposure to nZnO for 4 months into BALB/c athymic nude mice and observed tumor formation. ZnCl2 was administered to determine the role of zinc ions. Results Chronic low-dose exposure to nZnO significantly intensified the malignant progression of HCC cells, whereas aged nZnO may exacerbate the severity of malignant progression. Furthermore, through transcriptome sequencing analysis and in vitro cellular rescue experiments, we demonstrated that the mechanism of nZnO-induced malignant progression of HCC could be linked to the activation of Claudin-2 (CLDN2), one of the components of cellular tight junctions, and the dysregulation of its downstream signaling pathways. Conclusion Long-term exposure of fresh and aged nZnO promotes hepatocellular carcinoma malignancy by up-regulating CLDN2. The implications of this work can be profound for cancer patients, as the use of various nanoproducts and unintentional exposure to environmentally transformed NMs may unknowingly hasten the progression of their cancers.
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Affiliation(s)
- Na Yu
- Department of Pathophysiology, School of Basic Medical Science, Anhui Medical University, Hefei, 230032, People’s Republic of China
| | - Mingqin Su
- Department of Pathophysiology, School of Basic Medical Science, Anhui Medical University, Hefei, 230032, People’s Republic of China
| | - Juan Wang
- Department of Public Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, 230032, People’s Republic of China
| | - Yakun Liu
- Department of Pathophysiology, School of Basic Medical Science, Anhui Medical University, Hefei, 230032, People’s Republic of China
| | - Jingya Yang
- Department of Pathophysiology, School of Basic Medical Science, Anhui Medical University, Hefei, 230032, People’s Republic of China
| | - Jingyi Zhang
- Department of Pathophysiology, School of Basic Medical Science, Anhui Medical University, Hefei, 230032, People’s Republic of China
| | - Meimei Wang
- Department of Pathophysiology, School of Basic Medical Science, Anhui Medical University, Hefei, 230032, People’s Republic of China
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Ding Y, Liu Q. Targeting the nucleic acid oxidative damage repair enzyme MTH1: a promising therapeutic option. Front Cell Dev Biol 2024; 12:1334417. [PMID: 38357002 PMCID: PMC10864502 DOI: 10.3389/fcell.2024.1334417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/17/2024] [Indexed: 02/16/2024] Open
Abstract
The accumulation of reactive oxygen species (ROS) plays a pivotal role in the development of various diseases, including cancer. Elevated ROS levels cause oxidative stress, resulting in detrimental effects on organisms and enabling tumors to develop adaptive responses. Targeting these enhanced oxidative stress protection mechanisms could offer therapeutic benefits with high specificity, as normal cells exhibit lower dependency on these pathways. MTH1 (mutT homolog 1), a homolog of Escherichia coli's MutT, is crucial in this context. It sanitizes the nucleotide pool, preventing incorporation of oxidized nucleotides, thus safeguarding DNA integrity. This study explores MTH1's potential as a therapeutic target, particularly in cancer treatment, providing insights into its structure, function, and role in disease progression.
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Affiliation(s)
| | - Qingquan Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Gannan Medical University, Jiangxi, China
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Al-Azhary DB, Sawy SA, Fawzy Hassan H, Meligi NM. Potential effects of spirulina and date palm pollens on zinc oxide nanoparticles -induced hepatoxicity, oxidative stress, and inflammation in male albino rats. Toxicol Res (Camb) 2023; 12:1051-1062. [PMID: 38145102 PMCID: PMC10734569 DOI: 10.1093/toxres/tfad096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/12/2023] [Accepted: 09/30/2023] [Indexed: 12/26/2023] Open
Abstract
INTRODUCTION The application of Zinc oxide nanoparticles (ZnO NPs) is substantially growing in industrial products. Therefore, humans are increasingly exposed to ZnO NPs daily due to their extensive range of applications, raising worries about their possible toxicity. AIM In this study, the ameliorative effects of raw Phoenix dactylifera L. (date palm) pollens (DPP) and Spirulina platensis (SP) independently against ZnO NPS-induced hepatoxicity in male albino rats were examined. METHODS Six groups (6/group) of adult male albino rats received oral treatment using distilled water (control), SP (1000 mg/kg b. wt.), DPP (100 mg/kg b. wt.), ZnO NPs (100 mg/kg b. wt.), ZnO NPs +SP, and ZnO NPs + DPP respectively for 15 days. RESULTS The results of the biochemical investigation indicated that the administration of ZnO NPs substantially upregulated (p < 0.05) transaminases, alkaline phosphatase, and bilirubin serum levels. Malondialdehyde and pro-inflammatory cytokine serum levels were also elevated after ZnO NPs administration. Simultaneously, the downregulated catalase and glutathione peroxidase serum activities were significantly suppressed in ZnO NPs treated rats. Moreover, exposure to ZnO NPs induced liver histopathological alterations. The administration of SP and DPP ameliorated the aforementioned effects caused by ZnO NPs. This result can be attributable to the downregulation of hepatic transaminases, alkaline phosphatase, and bilirubin in the serum and the antioxidation system's equilibration, thus alleviating the accumulation of reactive oxygen species. CONCLUSION SP and DPP are natural antioxidants with the potential to eliminate inflammation as well as oxidative damage caused by ZnO NPs in hepatic tissue.
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Affiliation(s)
- Diaa B Al-Azhary
- Zoology Department, Faculty of Science, Minia University, Cairo-Aswan Road, Minia 61519, Egypt
| | - Samar A Sawy
- Zoology Department, Faculty of Science, Minia University, Cairo-Aswan Road, Minia 61519, Egypt
| | - Hanaa Fawzy Hassan
- Zoology Department, Faculty of Science, Minia University, Cairo-Aswan Road, Minia 61519, Egypt
| | - Noha M Meligi
- Zoology Department, Faculty of Science, Minia University, Cairo-Aswan Road, Minia 61519, Egypt
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Chatterjee N, Alfaro-Moreno E. In Vitro Cell Transformation Assays: A Valuable Approach for Carcinogenic Potentiality Assessment of Nanomaterials. Int J Mol Sci 2023; 24:ijms24098219. [PMID: 37175926 PMCID: PMC10178964 DOI: 10.3390/ijms24098219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
This review explores the application of in vitro cell transformation assays (CTAs) as a screening platform to assess the carcinogenic potential of nanomaterials (NMs) resulting from continuously growing industrial production and use. The widespread application of NMs in various fields has raised concerns about their potential adverse effects, necessitating safety evaluations, particularly in long-term continuous exposure scenarios. CTAs present a realistic screening platform for known and emerging NMs by examining their resemblance to the hallmark of malignancy, including high proliferation rates, loss of contact inhibition, the gain of anchorage-independent growth, cellular invasion, dysregulation of the cell cycle, apoptosis resistance, and ability to form tumors in experimental animals. Through the deliberate transformation of cells via chronic NM exposure, researchers can investigate the tumorigenic properties of NMs and the underlying mechanisms of cancer development. This article examines NM-induced cell transformation studies, focusing on identifying existing knowledge gaps. Specifically, it explores the physicochemical properties of NMs, experimental models, assays, dose and time requirements for cell transformation, and the underlying mechanisms of malignancy. Our review aims to advance understanding in this field and identify areas for further investigation.
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Affiliation(s)
- Nivedita Chatterjee
- NanoSafety Group, International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal
| | - Ernesto Alfaro-Moreno
- NanoSafety Group, International Iberian Nanotechnology Laboratory, 4715-330 Braga, Portugal
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Barguilla I, Maguer-Satta V, Guyot B, Pastor S, Marcos R, Hernández A. In Vitro Approaches to Determine the Potential Carcinogenic Risk of Environmental Pollutants. Int J Mol Sci 2023; 24:ijms24097851. [PMID: 37175558 PMCID: PMC10178670 DOI: 10.3390/ijms24097851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/22/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
One important environmental/health challenge is to determine, in a feasible way, the potential carcinogenic risk associated with environmental agents/exposures. Since a significant proportion of tumors have an environmental origin, detecting the potential carcinogenic risk of environmental agents is mandatory, as regulated by national and international agencies. The challenge mainly implies finding a way of how to overcome the inefficiencies of long-term trials with rodents when thousands of agents/exposures need to be tested. To such an end, the use of in vitro cell transformation assays (CTAs) was proposed, but the existing prevalidated CTAs do not cover the complexity associated with carcinogenesis processes and present serious limitations. To overcome such limitations, we propose to use a battery of assays covering most of the hallmarks of the carcinogenesis process. For the first time, we grouped such assays as early, intermediate, or advanced biomarkers which allow for the identification of the cells in the initiation, promotion or aggressive stages of tumorigenesis. Our proposal, as a novelty, points out that using a battery containing assays from all three groups can identify if a certain agent/exposure can pose a carcinogenic risk; furthermore, it can gather mechanistic insights into the mode of the action of a specific carcinogen. This structured battery could be very useful for any type of in vitro study, containing human cell lines aiming to detect the potential carcinogenic risks of environmental agents/exposures. In fact, here, we include examples in which these approaches were successfully applied. Finally, we provide a series of advantages that, we believe, contribute to the suitability of our proposed approach for the evaluation of exposure-induced carcinogenic effects and for the development of an alternative strategy for conducting an exposure risk assessment.
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Affiliation(s)
- Irene Barguilla
- Group of Mutagenesis, Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69008 Lyon, France
| | | | - Boris Guyot
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69008 Lyon, France
| | - Susana Pastor
- Group of Mutagenesis, Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
| | - Ricard Marcos
- Group of Mutagenesis, Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
| | - Alba Hernández
- Group of Mutagenesis, Department of Genetics and Microbiology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
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Pei X, Jiang H, Xu G, Li C, Li D, Tang S. Lethality of Zinc Oxide Nanoparticles Surpasses Conventional Zinc Oxide via Oxidative Stress, Mitochondrial Damage and Calcium Overload: A Comparative Hepatotoxicity Study. Int J Mol Sci 2022; 23:ijms23126724. [PMID: 35743165 PMCID: PMC9223789 DOI: 10.3390/ijms23126724] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 12/12/2022] Open
Abstract
Zinc oxide nanoparticles (ZnO NPs) with high bioavailability and excellent physicochemical properties are gradually becoming commonplace as a substitute for conventional ZnO materials. The present study aimed to investigate the hepatotoxicity mechanism of ZnO NPs and traditional non-nano ZnO particles, both in vivo and in vitro, and identify the differences in their toxic effects. The results showed that the extent and conditions of zinc ion release from ZnO NPs were inconsistent with those of ZnO. The RNA-seq results revealed that the expression quantity of differentially expressed genes (DEGs) and differentially expressed transcripts (DETs) affected by ZnO NPs was more than in ZnO, and the overall differences in genes or transcripts in the ZnO NPs group were more pronounced than in the ZnO group. Furthermore, the cell inactivation, oxidative stress, mitochondrial damage, and intracellular calcium overload induced by ZnO NPs were more serious than ZnO in HepG2 cells. Moreover, compared with traditional ZnO, the rat liver damage induced by ZnO NPs was more significant, with evidence of higher AST and ALT levels, weaker antioxidant capacity, and more serious histopathological damage (p < 0.05). In summary, the hepatotoxicity of ZnO NPs was more serious than that of conventional ZnO, which is helpful to understand the hepatotoxicity mechanism of Zn compounds in different states and improve the risk assessment of novel nano ZnO products in a variety of applications.
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Affiliation(s)
- Xingyao Pei
- Department of Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan West Road No.2, Haidian District, Beijing 100193, China; (X.P.); (H.J.)
| | - Haiyang Jiang
- Department of Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan West Road No.2, Haidian District, Beijing 100193, China; (X.P.); (H.J.)
| | - Gang Xu
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, Department of Animal Pharmacy, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Jinjing Road No.22, Xiqing District, Tianjin 300384, China; (G.X.); (C.L.)
| | - Cun Li
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, Department of Animal Pharmacy, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Jinjing Road No.22, Xiqing District, Tianjin 300384, China; (G.X.); (C.L.)
| | - Daowen Li
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, Department of Animal Pharmacy, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Jinjing Road No.22, Xiqing District, Tianjin 300384, China; (G.X.); (C.L.)
- Tianjin Key Laboratory of Biological Feed Additive Enterprise, S&E Burgeoning Biotechnology (Tianjin) Co., Ltd., Tianjin 300383, China
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Molecular Drug Research, College of Pharmacy, Nankai University, Haihe Education Park, Tongyan Road No.38, Tianjin 300353, China
- Correspondence: (D.L.); (S.T.)
| | - Shusheng Tang
- Department of Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan West Road No.2, Haidian District, Beijing 100193, China; (X.P.); (H.J.)
- Correspondence: (D.L.); (S.T.)
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Xi WS, Li JB, Liu YY, Wu H, Cao A, Wang H. Cytotoxicity and genotoxicity of low-dose vanadium dioxide nanoparticles to lung cells following long-term exposure. Toxicology 2021; 459:152859. [PMID: 34273449 DOI: 10.1016/j.tox.2021.152859] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 07/05/2021] [Accepted: 07/13/2021] [Indexed: 12/17/2022]
Abstract
Vanadium dioxide nanoparticles (VO2 NPs) have been massively produced and widely applied due to their excellent metal-insulator transition property, making it extremely urgent to evaluate their safety, especially for low-dose long-term respiratory occupational exposure. Here, we report a comprehensive cytotoxicity and genotoxicity study on VO2 NPs to lung cell lines A549 and BEAS-2B following a long-term exposure. A commercial VO2 NP, S-VO2, was used to treat BEAS-2B (0.15-0.6 μg/mL) and A549 (0.3-1.2 μg/mL) cells for four exposure cycles, and each exposure cycle lasted for 4 consecutive days; then various bioassays were performed after each cycle. Significant proliferation inhibition was observed in both cell lines after long-term exposure of S-VO2 at low doses that did not cause apparent acute cytotoxicity; however, the genotoxicity of S-VO2, characterized by DNA damage and micronuclei, was only observed in A549 cells. These adverse effects of S-VO2 were exposure time-, dose- and cell-dependent, and closely related to the solubility of S-VO2. The oxidative stress in cells, i.e., enhanced reactive oxygen species (ROS) generation and suppressed reduced glutathione, was the main toxicity mechanism of S-VO2. The ROS-associated mitochondrial damage and DNA damage led to the genotoxicity, and cell proliferation retard, resulting in the cellular viability loss. Our results highlight the importance and urgent necessity of the investigation on the long-term toxicity of VO2 NPs.
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Affiliation(s)
- Wen-Song Xi
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, China
| | - Jia-Bei Li
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, China
| | - Yuan-Yuan Liu
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, China
| | - Hao Wu
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, China
| | - Aoneng Cao
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, China.
| | - Haifang Wang
- Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, China.
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Liu L, Kong L. Research progress on the carcinogenicity of metal nanomaterials. J Appl Toxicol 2021; 41:1334-1344. [PMID: 33527484 DOI: 10.1002/jat.4145] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/16/2021] [Accepted: 01/22/2021] [Indexed: 12/21/2022]
Abstract
With the rapid development of nanotechnology, new nanomaterials with enormous potentials continue to emerge, especially metal nanomaterials. Metal nanomaterials possess the characteristics of metals and nanomaterials, so they are widely used in many fields. But at the same time, whether the use or release of metal nan4omaterials into the environment is toxic to human beings and animals has now attained widespread attention at home and abroad. Currently, it is an indisputable fact that cancer ranks among the top causes of death among residents worldwide. The properties of causing DNA damage and mutations possessed by these metal nanomaterials make them unpredictable influences in the body, subsequently leading to genotoxicity and carcinogenicity. Due to the increasing evidence of their roles in carcinogenicity, this article reviews the toxicological and carcinogenic effects of metal nanomaterials, including nano-metal elements (nickel nanoparticles, silver nanoparticles, and cobalt nanoparticles) and nano-metal oxides (titanium dioxide nanoparticles, silica nanoparticles, zinc oxide nanoparticles, and alumina nanoparticles). This article provides a reference for the researchers and policymakers to use metal nanomaterials rationally in modern industries and biomedicine.
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Affiliation(s)
- Lin Liu
- Key Laboratory of Environment Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Lu Kong
- Key Laboratory of Environment Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
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