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Wang CL, Li P, Liu B, Ma YQ, Feng JX, Xu YN, Liu L, Li ZH. Decrypting the skeletal toxicity of vertebrates caused by environmental pollutants from an evolutionary perspective: From fish to mammals. ENVIRONMENTAL RESEARCH 2024; 255:119173. [PMID: 38763280 DOI: 10.1016/j.envres.2024.119173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/09/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
The rapid development of modern society has led to an increasing severity in the generation of new pollutants and the significant emission of old pollutants, exerting considerable pressure on the ecological environment and posing a serious threat to both biological survival and human health. The skeletal system, as a vital supportive structure and functional unit in organisms, is pivotal in maintaining body shape, safeguarding internal organs, storing minerals, and facilitating blood cell production. Although previous studies have uncovered the toxic effects of pollutants on vertebrate skeletal systems, there is a lack of comprehensive literature reviews in this field. Hence, this paper systematically summarizes the toxic effects and mechanisms of environmental pollutants on the skeletons of vertebrates based on the evolutionary context from fish to mammals. Our findings reveal that current research mainly focuses on fish and mammals, and the identified impact mechanisms mainly involve the regulation of bone signaling pathways, oxidative stress response, endocrine system disorders, and immune system dysfunction. This study aims to provide a comprehensive and systematic understanding of research on skeletal toxicity, while also promoting further research and development in related fields.
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Affiliation(s)
- Cun-Long Wang
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Ping Li
- Marine College, Shandong University, Weihai, Shandong, 264209, China.
| | - Bin Liu
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Yu-Qing Ma
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Jian-Xue Feng
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Ya-Nan Xu
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Ling Liu
- Marine College, Shandong University, Weihai, Shandong, 264209, China
| | - Zhi-Hua Li
- Marine College, Shandong University, Weihai, Shandong, 264209, China.
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2
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Jia X, Wang Y, Cui J, Li Y, Wu W, Zhang X, Wang J. Ochratoxin A-induced DNA damage triggers G 2 phase arrest via hMLH1-p53-p21 signaling pathway in human gastric epithelium immortalized cells in vitro. Toxicol Lett 2024; 400:S0378-4274(24)01075-0. [PMID: 39117293 DOI: 10.1016/j.toxlet.2024.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 06/21/2024] [Accepted: 08/06/2024] [Indexed: 08/10/2024]
Abstract
Ochratoxin A (OTA), as one of the most important and harmful mycotoxins, is classed as possible human carcinogen (group 2B). As we all know, DNA damage may cause genomic instability, cell cycle disorder, activation of DNA damage pathway, and stimulation of DNA repair system. To explore the roles of DNA damage repair protein (hMLH1) on OTA-induced G2 arrest, the DNA damage, chromosome aberration, cell cycle distribution and p53-p21 signaling pathway were evaluatd after different time OTA exposure (6, 12, 24, 48h) in immortalized human gastric epithelial cells (GES-1). Our results demonstrated that OTA exposure could trigger genomic instability, DNA damage and G2 phase arrest of GES-1 cells. At the same time, OTA treatment could increase the expression of hMLH1, and induce phosphorylation of the p53 protein, as well as p21, in response to DNA damage. Finally, inhibition of hMLH1 by siRNA effectively prevented the activation of p53-p21 signaling pathway and rescued the G2 arrest elicited by OTA. This study demonstrated that hMLH1-p53-p21 signaling pathway played an important role in DNA damage and G2 cell cycle arrest the mediated by OTA in GES-1 cells.
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Affiliation(s)
- Xin Jia
- Department of Pathology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yuan Wang
- Department of Pathology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jinfeng Cui
- Department of Pathology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yuehong Li
- Department of Pathology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wenxin Wu
- Department of Pathology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xianghong Zhang
- Department of Pathology, The Second Hospital of Hebei Medical University, Shijiazhuang, China; Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Juan Wang
- Department of Pathology, The Second Hospital of Hebei Medical University, Shijiazhuang, China.
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3
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Talukder M, Bi SS, Lv MW, Ge J, Zhang C, Li JL. Involvement of the heat shock response (HSR) regulatory pathway in cadmium-elicited cerebral damage. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:106648-106659. [PMID: 37730984 DOI: 10.1007/s11356-023-29880-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/10/2023] [Indexed: 09/22/2023]
Abstract
The heat shock response (HSR) is a cellular protective mechanism that is characterized by the induction of heat shock transcription factors (HSFs) and heat shock proteins (HSPs) in response to diverse cellular and environmental stressors, including cadmium (Cd). However, little is known about the relationship between the damaging effects of Cd and the HSR pathway in the chicken cerebrum following Cd exposure. To explore whether Cd exposure elicits cerebral damage and triggers the HSR pathway, chicks were exposed to Cd in the daily diet at different concentrations (35, 70, or 140 mg/kg feed) for 90 days, while a control group was fed the standard diet without Cd. Histopathological examination of cerebral tissue from Cd-exposed chickens showed neuronal damage, as evidenced by swelling and degeneration of neurons, loss of neurons, and capillary damage. Cd exposure significantly increased mRNA expression of HSF1, HSF2, and HSF3, and mRNA and protein expression of three major stress-inducible HSPs (HSP60, HSP70, and HSP90). Moreover, Cd exposure differentially modulated mRNA expression of small HSP (sHSPs), most notably reducing expression of HSP27 (HSPB1). Furthermore, Cd exposure increased TUNEL-positive neuronal apoptotic cells and up-regulated protein expression of caspase-1, caspase-8, caspase-3, and p53, leading to apoptosis. Taken together, these data demonstrate that activation of the HSR and apoptotic pathways by Cd exposure is involved in Cd-elicited cerebral damage in the chicken. Synopsis for the graphical abstract Cadmium (Cd)-induced neuronal damage triggers the heat shock response (HSR) by activating heat shock transcription factors (HSFs) and subsequent induction of major heat shock proteins (notably, HSP60, HSP70, and HSP90). Moreover, Cd exposure activates caspase-1, caspase-8, caspase-3, and p53 protein, thereby resulting in neuronal apoptosis in the chicken brain.
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Affiliation(s)
- Milton Talukder
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
- Department of Physiology and Pharmacology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal, 8210, Bangladesh
| | - Shao-Shuai Bi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
- College of Biological and Pharmaceutical Engineering, West Anhui University, Luan, 237012, People's Republic of China
| | - Mei-Wei Lv
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Jing Ge
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Cong Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
- College of Veterinary Medicine, Henan Agricultural University, 450046, Zhengzhou, Henan, People's Republic of China
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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4
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Chou X, Li X, Min Z, Ding F, Ma K, Shen Y, Sun D, Wu Q. Sirtuin-1 attenuates cadmium-induced renal cell senescence through p53 deacetylation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 245:114098. [PMID: 36137422 DOI: 10.1016/j.ecoenv.2022.114098] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Cadmium (Cd), the common environmental pollutant, primarily targets at renal proximal tubules and induces nephrotoxicity. Cellular senescence, a phenomenon of cell growth arrest and a characteristics of maladaptive cell self-repair, is associated with renal disease progression. However, whether and how Cd induces renal tubular cells premature senescence is unknown. In our study, we found that Cd induced kidney damage and dysfunctions, which correlated with exacerbated tubular cell senescence, evidenced by increased senescence-associated β-galactosidase activity, the upregulated protein expression of p53 and p21Waf1/Cip1 proteins, and elevated expression and secretion of cytokines in human proximal tubular epithelial HK-2 cells in vitro and in Cd-treated mice in vivo. Moreover, a S-phase arrest and decrease in Edu positive rate were found in Cd-treated HK-2 cells. Mechanistically, Cd suppressed the expression and activity of Sirtuin-1 (SIRT1), an anti-senescence deacetylase, resulting in the accumulation of acetylated p53 and upregulation of p21Waf1/Cip1. Activation of SIRT1 significantly abolished Cd-induced premature senescence and S-phase arrest. Finally, silencing p21Waf1/Cip1 efficiently delayed premature senescence and recovered cell cycle progression. These findings indicate that Cd promotes tubular cells senescence and impairs tubular cells regeneration, resulting in kidney dysfunctions, which could be ameliorated by SIRT1 activation.
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Affiliation(s)
- Xin Chou
- Department of Occupational Disease, Shanghai Pulmonary Hospital affiliated Tongji University, 507 Zhengmin road, Shanghai 200433, China; School of Public Health, Fudan University, 130 Dong'An Road, Shanghai 200032, China
| | - Xiaohu Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Zhen Min
- Department of Occupational Disease, Shanghai Pulmonary Hospital affiliated Tongji University, 507 Zhengmin road, Shanghai 200433, China
| | - Fan Ding
- School of Public Health, Fudan University, 130 Dong'An Road, Shanghai 200032, China
| | - Kunpeng Ma
- Department of Occupational Disease, Shanghai Pulmonary Hospital affiliated Tongji University, 507 Zhengmin road, Shanghai 200433, China
| | - Yue Shen
- Department of Occupational Disease, Shanghai Pulmonary Hospital affiliated Tongji University, 507 Zhengmin road, Shanghai 200433, China
| | - Daoyuan Sun
- Department of Occupational Disease, Shanghai Pulmonary Hospital affiliated Tongji University, 507 Zhengmin road, Shanghai 200433, China.
| | - Qing Wu
- School of Public Health, Fudan University, 130 Dong'An Road, Shanghai 200032, China.
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5
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Pisareva EI, Tomova AA, Petrova VY. Saccharomyces cerevisiae quiescent cells: cadmium resistance and adaptive response. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2021.1980106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Emiliya Ivanova Pisareva
- Department of General and Industrial Microbiology, Faculty of Biology, Sofia University “St. Kliment Ohridski,”Sofia, Bulgaria
| | - Anna Atanasova Tomova
- Department of General and Industrial Microbiology, Faculty of Biology, Sofia University “St. Kliment Ohridski,”Sofia, Bulgaria
| | - Ventsislava Yankova Petrova
- Department of General and Industrial Microbiology, Faculty of Biology, Sofia University “St. Kliment Ohridski,”Sofia, Bulgaria
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6
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Luo T, Yu Q, Dong W, Gong Z, Tan Y, Liu W, Zou H, Gu J, Yuan Y, Bian J, Shao C, Zhu J, Liu Z. Effect of cell cycle synchronization on cadmium-induced apoptosis and necrosis in NRK-52E cells. Cell Cycle 2020; 19:3386-3397. [PMID: 33222613 DOI: 10.1080/15384101.2020.1848065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Heavy metal pollution is a problem that cannot be ignored. Due to the prevalence of cadmium in the environment and its harmful effects on humans, cadmium pollution has become a research hotspot recently. The mechanism of cadmium-induced toxicity has also drawn much attention and most studies have been conducted using whole cells, but the toxicological mechanism of cadmium remains unclear. In this study, we aimed to obtain NRK-52E cells at different growth stages by various methods and analyze the differences in cadmium toxicity. The results show that the cadmium sensitivity of cells in each phase was different and the late apoptotic rate was increased significantly after 5 µM Cd treatment. In addition, cadmium easily induces apoptosis of G0- and S-phase cells, as well as necrosis of S- and M-phase cells, but has no significant effect on G1-phase cells. Overall, we first explored the differences in the effects of cadmium on NRK-52E cells at various growth phases. Besides, the findings of this study might provide a theoretical basis for further exploration of the toxicological mechanism of cadmium.Abbreviations Cd: cadmium; CDK: cyclin-dependent kinases; DAPI 2-(4-amidinophenyl)-1H-indole-6-carboxamidine; TBST: Tris-buffered saline with Tween-20; PI: propidium iodide; DMEM: Dulbecco's Modified Eagle Medium; BCA: bicinchoninic acid.
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Affiliation(s)
- Tongwang Luo
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China.,College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University , Hangzhou, P.R. China
| | - Qi Yu
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Wenxuan Dong
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Zhonggui Gong
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Yun Tan
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Wenjing Liu
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Hui Zou
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Jianhong Gu
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Yan Yuan
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Jianchun Bian
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Chunyan Shao
- College of Animal Science and Technology & College of Veterinary Medicine, Zhejiang A&F University , Hangzhou, P.R. China
| | - Jiaqiao Zhu
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University , Yangzhou, P.R. China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses , Yangzhou, P.R. China.,Yangzhou University , Yangzhou, P.R. China
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7
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Cadmium induces apoptosis via generating reactive oxygen species to activate mitochondrial p53 pathway in primary rat osteoblasts. Toxicology 2020; 446:152611. [PMID: 33031904 DOI: 10.1016/j.tox.2020.152611] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/27/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023]
Abstract
Cadmium (Cd), a heavy metal produced by various industries, contaminates the environment and seriously damages the skeletal system of humans and animals. Recent studies have reported that Cd can affect the viability of cells, including osteoblasts, both in vivo and in vitro. However, the mechanism of Cd-induced apoptosis remains unclear. In the present study, primary rat osteoblasts were used to investigate the Cd-induced apoptotic mechanism. We found that treatment with 2 and 5 μM Cd for 12 h decreased osteoblast viability and increased apoptosis. Furthermore, Cd increased the generation of reactive oxygen species (ROS), and, thus, DNA damage measured via p-H2AX. The level of the nuclear transcription factor p53 was significantly increased, which upregulated the expression of PUMA, Noxa, Bax, and mitochondrial cytochrome c, downregulated the expression of Bcl-2, and increased the level of cleaved caspase-3. However, pretreatment with the ROS scavenger N-acetyl-l-cysteine (NAC) or the p53 transcription specific inhibitor PFT-α suppressed Cd-induced apoptosis. Our results indicate that Cd can induce apoptosis in osteoblasts by increasing the generation of ROS and activating the mitochondrial p53 signaling pathway, and this mechanism requires the transcriptional activation of p53.
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8
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Zhang H, Reynolds M. Cadmium exposure in living organisms: A short review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:761-767. [PMID: 31085492 DOI: 10.1016/j.scitotenv.2019.04.395] [Citation(s) in RCA: 225] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 05/20/2023]
Abstract
Cadmium (Cd) is a toxic heavy metal that accumulates in living systems. Exposure can occur occupationally or environmentally. Workers within the electroplating, battery production, and pigment industries are at the highest risk for exposure and have been reported to have increased levels of Cd in their blood and urine. Environmental exposure can be the result of anthropogenic activities or smoking. Cd has a long half-life and bio accumulates in plants, invertebrates, and vertebrates. The toxic effects following exposure include growth retardation and organ system toxicity, with kidney and liver toxicity most reported with in higher organisms. At the molecular level, Cd leads to the production of reactive oxygen species, DNA damage, and inhibition of DNA repair. This article gives a brief overview of the correlations between exposure to cadmium occupationally and environmentally and levels measured in blood and urine. It also examines the bioaccumulation of cadmium in aquatic invertebrates and vertebrates indicating that accumulation varies not only by location but also within and between various species.
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Affiliation(s)
- Hao Zhang
- Department of Biology, Washington College, 300 Washington Ave., Chestertown, MD 21620, USA
| | - Mindy Reynolds
- Department of Biology, Washington College, 300 Washington Ave., Chestertown, MD 21620, USA.
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9
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Sudo K, VAN Dao C, Miyamoto A, Shiraishi M. Comparative analysis of in vitro neurotoxicity of methylmercury, mercury, cadmium, and hydrogen peroxide on SH-SY5Y cells. J Vet Med Sci 2019; 81:828-837. [PMID: 30996207 PMCID: PMC6612504 DOI: 10.1292/jvms.19-0059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Mercury (Hg) and cadmium (Cd) are the major toxic heavy metals and are known to induce
neurotoxicity. Although many studies have shown that several heavy metals have neurotoxic
effects, the cellular and molecular mechanisms thereof are still not clear. Oxidative
stress is reported to be a common and important mechanism in cytotoxicity induced by heavy
metals. However, the assays for identifying toxic mechanisms were not performed under the
same experimental conditions, making it difficult to compare toxic properties of the heavy
metals. In this study, we investigated the mechanisms underlying neurotoxicity induced by
heavy metals and H2O2, focusing on cell death, cell proliferation,
and oxidative stress under the same experimental condition. Our results showed that MeHg
caused lactate dehydrogenase (LDH) release, caspase activation and cell-cycle alteration,
and ROS generation in accordance with decreased cell viability. HgCl2 caused
LDH release and cell-cycle alteration, but not caspase activation. CdCl2 had a
remarkable effect on the cell cycle profiles without induction of LDH release, caspase
activation, or ROS generation. Pretreatment with N-acetyl-l-cysteine (NAC) prevented the
decrease in cell viability induced by MeHg and HgCl2, but not CdCl2.
Our results demonstrate a clear difference in neurotoxic mechanisms induced by MeHg,
HgCl2, CdCl2 or H2O2 in SH-SY5Y cells.
Elucidating the characteristics and mechanisms of each heavy metal under the same
experimental conditions will be helpful to understand the effect of heavy metals on health
and to develop a more effective therapy for heavy metal poisoning.
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Affiliation(s)
- Kasumi Sudo
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan.,Present address: Assay Division I, National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, 1-15-1 Tokura, Kokubunji, Tokyo 185-8511, Japan
| | - Cuong VAN Dao
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan.,Department of Veterinary Pharmacology, Faculty of Animal Husbandry and Veterinary Medicine, Thai Nguyen University of Agriculture and Forestry, Group 10, Quyet Thang Commune, Thai Nguyen City, Thai Nguyen, Vietnam
| | - Atsushi Miyamoto
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
| | - Mitsuya Shiraishi
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
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10
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Zhang RK, Wang P, Lu YC, Lang L, Wang L, Lee SC. Cadmium induces cell centrosome amplification via reactive oxygen species as well as endoplasmic reticulum stress pathway. J Cell Physiol 2019; 234:18230-18248. [DOI: 10.1002/jcp.28455] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 02/06/2019] [Accepted: 02/14/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Rui Kai Zhang
- Department of Biology, School of Life Sciences Shanxi University Taiyuan Shanxi People's Republic of China
| | - Pu Wang
- Department of Biology, School of Life Sciences Shanxi University Taiyuan Shanxi People's Republic of China
| | - Yu Cheng Lu
- Department of Biology, School of Life Sciences Shanxi University Taiyuan Shanxi People's Republic of China
| | - Lang Lang
- Department of Biology, School of Life Sciences Shanxi University Taiyuan Shanxi People's Republic of China
| | - Lan Wang
- Department of Biology, School of Life Sciences Shanxi University Taiyuan Shanxi People's Republic of China
| | - Shao Chin Lee
- Department of Biology, School of Life Sciences Shanxi University Taiyuan Shanxi People's Republic of China
- Department of Biology, School of Life Sciences Jiangsu Normal University Xuzhou Jiangsu People's Republic of China
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11
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Ospondpant D, Phuagkhaopong S, Suknuntha K, Sangpairoj K, Kasemsuk T, Srimaroeng C, Vivithanaporn P. Cadmium induces apoptotic program imbalance and cell cycle inhibitor expression in cultured human astrocytes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2019; 65:53-59. [PMID: 30537571 DOI: 10.1016/j.etap.2018.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 09/15/2018] [Accepted: 12/02/2018] [Indexed: 06/09/2023]
Abstract
Cadmium is a highly neurotoxic heavy metal impairing neurogenesis and induces neurodegenerative disorders. Toxic concentrations of cadmium induce astrocytic apoptosis by depleting intracellular glutathione levels, elevating intracellular calcium levels, altering mitochondria membrane potentials, and activating JNK and PI3K/Akt signaling pathways. Cadmium suppresses cell proliferation in kidney epithelial cells, lung fibroblasts, and primary myelocytes; however, cadmium's effects on proteins regulating oxidative stress, apoptosis, and cell proliferation in astrocytes are less known. The present study hypothesized that cadmium alters levels of antioxidant enzymes, apoptotic regulator proteins, and cell cycle inhibitor proteins, resulting in apoptosis and cell cycle arrest. Concentrations ≥20 μM cadmium induced apoptosis and led to intracellular changes including DNA fragmentation, reduced mRNA expression of antioxidant enzymes (i.e., catalase and glutathione S transferase-A4), downregulation of B-cell lymphoma 2 (Bcl-2), and upregulation of Bcl-2-associated X protein (Bax). Moreover, cadmium suppressed astrocytic proliferation by inducing S and G2/M phase cell cycle arrest and promoting p53, p21, and p27 expression. In conclusion, this study provides mechanistic insight into cadmium-induced cytotoxicity of astrocytes and highlights potential targets for prevention of cadmium-induced apoptosis and cell cycle arrest.
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Affiliation(s)
- Dusadee Ospondpant
- Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | | | - Kran Suknuntha
- Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53792, United States
| | - Kant Sangpairoj
- Division of Anatomy, Department of Preclinical Science, Faculty of Medicine, Thammasat University, Pathum Thani, Thailand
| | - Thitima Kasemsuk
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Burapha University, Chonburi, Thailand
| | - Chutima Srimaroeng
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pornpun Vivithanaporn
- Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok, Thailand; Translational Medicine Graduate Program, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
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12
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Alkharashi NAO, Periasamy VS, Athinarayanan J, Alshatwi AA. Cadmium triggers mitochondrial oxidative stress in human peripheral blood lymphocytes and monocytes: Analysis using in vitro and system toxicology approaches. J Trace Elem Med Biol 2017; 42:117-128. [PMID: 28595784 DOI: 10.1016/j.jtemb.2017.04.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 04/26/2017] [Accepted: 04/28/2017] [Indexed: 11/21/2022]
Abstract
Cadmium (Cd) is a well-known heavy metal that causes environmental pollution and human health problems. Several studies attempted to assess Cd toxicity in vitro and in vivo. However, the systemic profile of cadmium toxicity has not been studied well. In the present study, we assessed the toxicity of Cd on human peripheral blood lymphocytes and monocytes and gene expression, using a system toxicological approach. Cd effect on cell viability and morphology were analyzed by MTT assay and AO/EB staining respectively. Mitochondrial membrane potential depletion and reactive oxygen singlet generation were assessed by flow cytometry. Effects of Cd treatment on gene expression were also studied. Significant reduction in cell viability and disintegration of nuclear morphology were observed in Cd-treated cells. Cd exposure enhanced the loss of mitochondrial membrane potential through oxidative stress. Dose-dependent upregulation of GSTM3 and downregulation of GSR gene expression were observed. TNF gene expression decreased as the level of Cd exposure increased. We analyzed the toxicological effects of Cd on more than 45 proteins for biological target identification. These system toxicological studies suggested that Cd induced toxicity through various biological processes such as oxidative stress, oxidation-reduction, and ROS and hydrogen peroxide generation. Additionally, Cd affects the cellular component network and modulates the expression level of oxidative stress-related genes.
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Affiliation(s)
- Nouf Abdulkareem Omer Alkharashi
- Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food Science and Agriculture, King Saud University, Riyadh, Saudi Arabia
| | - Vaiyapuri Subbarayan Periasamy
- Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food Science and Agriculture, King Saud University, Riyadh, Saudi Arabia
| | - Jegan Athinarayanan
- Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food Science and Agriculture, King Saud University, Riyadh, Saudi Arabia
| | - Ali A Alshatwi
- Nanobiotechnology and Molecular Biology Research Lab, Department of Food Science and Nutrition, College of Food Science and Agriculture, King Saud University, Riyadh, Saudi Arabia.
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Messner B, Türkcan A, Ploner C, Laufer G, Bernhard D. Cadmium overkill: autophagy, apoptosis and necrosis signalling in endothelial cells exposed to cadmium. Cell Mol Life Sci 2016; 73:1699-713. [PMID: 26588916 PMCID: PMC4805700 DOI: 10.1007/s00018-015-2094-9] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/23/2015] [Accepted: 11/09/2015] [Indexed: 12/31/2022]
Abstract
Apoptosis, necrosis, or autophagy-it is the mode of cell demise that defines the response of surrounding cells and organs. In case of one of the most toxic substances known to date, cadmium (Cd), and despite a large number of studies, the mode of cell death induced is still unclear. As there exists conflicting data as to which cell death mode is induced by Cd both across various cell types and within a single one, we chose to analyse Cd-induced cell death in primary human endothelial cells by investigating all possibilities that a cell faces in undergoing cell death. Our results indicate that Cd-induced death signalling starts with the causation of DNA damage and a cytosolic calcium flux. These two events lead to an apoptosis signalling-related mitochondrial membrane depolarisation and a classical DNA damage response. Simultaneously, autophagy signalling such as ER stress and phagosome formation is initiated. Importantly, we also observed lysosomal membrane permeabilization. It is the integration of all signals that results in DNA degradation and a disruption of the plasma membrane. Our data thus suggest that Cd causes the activation of multiple death signals in parallel. The genotype (for example, p53 positive or negative) as well as other factors may determine the initiation and rate of individual death signals. Differences in the signal mix and speed may explain the differing results recorded as to the Cd-induced mode of cell death thus far. In human endothelial cells it is the sum of most if not all of these signals that determine the mode of Cd-induced cell death: programmed necrosis.
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Affiliation(s)
- Barbara Messner
- Cardiac Surgery Research Laboratory, Department of Surgery, Medical University of Vienna, AKH, Level 8 G9.03, Währinger Gürtel 18-20, 1090, Vienna, Austria.
| | - Adrian Türkcan
- Cardiac Surgery Research Laboratory, Department of Surgery, Medical University of Vienna, AKH, Level 8 G9.03, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Christian Ploner
- Plastic, Reconstructive and Aesthetic Surgery Innsbruck, Department of Operative Medicine, Innsbruck Medical University, Innsbruck, Austria
| | - Günther Laufer
- Cardiac Surgery Research Laboratory, Department of Surgery, Medical University of Vienna, AKH, Level 8 G9.03, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - David Bernhard
- Cardiac Surgery Research Laboratory Innsbruck, University Clinic for Cardiac Surgery, Innsbruck Medical University, Innsbruck, Austria
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14
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Xenopus laevis oocyte maturation is affected by metal chlorides. Toxicol In Vitro 2015; 29:1124-31. [DOI: 10.1016/j.tiv.2015.04.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 04/20/2015] [Accepted: 04/22/2015] [Indexed: 02/02/2023]
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15
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Sarkar A, Bhagat J, Ingole BS, Rao DP, Markad VL. Genotoxicity of cadmium chloride in the marine gastropod Nerita chamaeleon using comet assay and alkaline unwinding assay. ENVIRONMENTAL TOXICOLOGY 2015; 30:177-187. [PMID: 23804459 DOI: 10.1002/tox.21883] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 05/16/2013] [Accepted: 05/22/2013] [Indexed: 06/02/2023]
Abstract
This paper presents an evaluation of the genotoxic effects of cadmium chloride (CdCl2 ) on marine gastropod, Nerita chamaeleon following the technique of comet assay and the DNA alkaline unwinding assay (DAUA). In this study, the extent of DNA damage in gill cells of N. chamaeleon was measured after in vivo exposure to four different concentrations (10, 25, 50, and 75 µg/L) of CdCl2 . In vitro exposure of hydrogen peroxide (H2 O2 ; 1, 10, 25, and 50 µM) of the gill cells showed a significant increase in the percentage tail DNA, Olive tail moment, and tail length (TL). Significant changes in percentage tail DNA by CdCl2 exposure were observed in all exposed groups of snails with respect to those in control. Exposure to 75 µg/L of CdCl2 produced significant decrease in DNA integrity as measured by DAUA at all duration with respect to control. In vivo exposure to different concentrations of CdCl2 (10, 25, 50, and 75 µg/L) to N. chamaeleon showed considerable increase in DNA damage as observed by both alkaline comet assay and the DAUA. The extent of DNA damage in marine gastropods determined by the application of alkaline comet assay and DAUA clearly indicated the genotoxic responses of marine gastropod, N. chamaeleon to a wide range of cadmium concentration in the marine environment.
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Affiliation(s)
- Anupam Sarkar
- Chemical Oceanographic Division, CSIR-National Institute of Oceanography Dona Paula, Goa, 403004, India.
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16
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Biology of the cell cycle inhibitor p21CDKN1A: molecular mechanisms and relevance in chemical toxicology. Arch Toxicol 2014; 89:155-78. [DOI: 10.1007/s00204-014-1430-4] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 12/03/2014] [Indexed: 02/07/2023]
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Oliveira H, Monteiro C, Pinho F, Pinho S, Ferreira de Oliveira JMP, Santos C. Cadmium-induced genotoxicity in human osteoblast-like cells. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2014; 775-776:38-47. [PMID: 25435354 DOI: 10.1016/j.mrgentox.2014.10.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 09/29/2014] [Accepted: 10/08/2014] [Indexed: 12/13/2022]
Abstract
Cadmium (Cd) is a widespread heavy metal used in numerous industrial processes. Cd exerts toxicological effects mostly in kidney and liver. Bone is also an important target of Cd, however, the cellular mechanisms of Cd toxicological effects in the bone cells are still poorly understood. Therefore, the present work aimed to investigate the putative cytotoxic and genotoxic effects of Cd to human bone cells. For that, the osteoblast-like MG-63 cells were exposed to 20 and 50μM Cd for 24 and 48h. Results showed a dose-dependent increase in Cd accumulation in cells and a decrease in cell viability, especially after 48h. Cell cycle analysis showed a delay at S phase concomitant with a decrease in cells at G0/G1 phase. After 24h, Cd treatment downregulated the expression of CHEK1, CHEK2 and CDK2 genes and upregulated the expression of CCNE1 gene. After 48h, the expression of ATM and CCNB1 genes were downregulated. Also, a 3.3 fold increase on the expression of gene CCNE1 was detected. Both Cd doses induced DNA fragmentation at 48h, while an increase in micronuclei (MN) and nucleoplasmic bridges (NPBs) together with an increase in the percentage of apoptotic/necrotic cells was detected for both time periods. Overall, our results demonstrate the cytotoxicity and genotoxicity of Cd in human bone cells. Also, the cytokinesis-block micronucleus (CBMN) assay parameters (MN, NPBs and the percentage of cells under apoptosis or necrosis) together with the cell cycle appear as the most sensitive to Cd cyto- and genotoxicity, being early affected even with the lowest Cd dose. Therefore, these cyto-/genotoxic techniques may be selected for early detection of Cd-induced toxicity.
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Affiliation(s)
- Helena Oliveira
- CESAM & Laboratory of Biotechnology and Cytomics, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Cristina Monteiro
- CESAM & Laboratory of Biotechnology and Cytomics, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Francisco Pinho
- CESAM & Laboratory of Biotechnology and Cytomics, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Sónia Pinho
- CESAM & Laboratory of Biotechnology and Cytomics, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - José Miguel P Ferreira de Oliveira
- CESAM & Laboratory of Biotechnology and Cytomics, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Conceição Santos
- CESAM & Laboratory of Biotechnology and Cytomics, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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18
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Cadmium and cellular signaling cascades: interactions between cell death and survival pathways. Arch Toxicol 2013; 87:1743-86. [PMID: 23982889 DOI: 10.1007/s00204-013-1110-9] [Citation(s) in RCA: 177] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Accepted: 07/29/2013] [Indexed: 12/20/2022]
Abstract
Cellular stress elicited by the toxic metal Cd(2+) does not coerce the cell into committing to die from the onset. Rather, detoxification and adaptive processes are triggered concurrently, allowing survival until normal function is restored. With high Cd(2+), death pathways predominate. However, if sublethal stress levels affect cells for prolonged periods, as in chronic low Cd(2+) exposure, adaptive and survival mechanisms may deregulate, such that tumorigenesis ensues. Hence, death and malignancy are the two ends of a continuum of cellular responses to Cd(2+), determined by magnitude and duration of Cd(2+) stress. Signaling cascades are the key factors affecting cellular reactions to Cd(2+). This review critically surveys recent literature to outline major features of death and survival signaling pathways as well as their activation, interactions and cross talk in cells exposed to Cd(2+). Under physiological conditions, receptor activation generates 2nd messengers, which are short-lived and act specifically on effectors through their spatial and temporal dynamics to transiently alter effector activity. Cd(2+) recruits physiological 2nd messenger systems, in particular Ca(2+) and reactive oxygen species (ROS), which control key Ca(2+)- and redox-sensitive molecular switches dictating cell function and fate. Severe ROS/Ca(2+) signals activate cell death effectors (ceramides, ASK1-JNK/p38, calpains, caspases) and/or cause irreversible damage to vital organelles, such as mitochondria and endoplasmic reticulum (ER), whereas low localized ROS/Ca(2+) levels act as 2nd messengers promoting cellular adaptation and survival through signal transduction (ERK1/2, PI3K/Akt-PKB) and transcriptional regulators (Ref1-Nrf2, NF-κB, Wnt, AP-1, bestrophin-3). Other cellular proteins and processes targeted by ROS/Ca(2+) (metallothioneins, Bcl-2 proteins, ubiquitin-proteasome system, ER stress-associated unfolded protein response, autophagy, cell cycle) can evoke death or survival. Hence, temporary or permanent disruptions of ROS/Ca(2+) induced by Cd(2+) play a crucial role in eliciting, modulating and linking downstream cell death and adaptive and survival signaling cascades.
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Abstract
The carcinogenicity of cadmium, arsenic, and chromium(VI) compounds has been recognized for some decades. However, the underlying molecular mechanisms seem to be complex and are not completely understood at present. Although, with the exception of chromium(VI), direct DNA damage seems to be of minor importance, interactions with DNA repair processes, tumor suppressor functions, and signal transduction pathways have been described in diverse biological systems. In addition to the induction of damage to cellular macromolecules by reactive oxygen species, the interference with cellular redox regulation by reaction with redox-sensitive protein domains or amino acids may provide one plausible mechanism involved in metal carcinogenicity. Consequences are the distortion of zinc-binding structures and the activation or inactivation of redox-regulated signal transduction pathways, provoking metal-induced genomic instability. Nevertheless, the relevance of the respective mechanisms depends on the actual metal or metal species under consideration and more research is needed to further strengthen this hypothesis.
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Affiliation(s)
- Andrea Hartwig
- Institute of Applied Biosciences, Department of Food Chemistry and Toxicology, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany.
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20
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Zhou Z, Wang C, Liu H, Huang Q, Wang M, Lei Y. Cadmium induced cell apoptosis, DNA damage, decreased DNA repair capacity, and genomic instability during malignant transformation of human bronchial epithelial cells. Int J Med Sci 2013; 10:1485-96. [PMID: 24046522 PMCID: PMC3775105 DOI: 10.7150/ijms.6308] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 08/12/2013] [Indexed: 12/31/2022] Open
Abstract
Cadmium and its compounds are well-known human carcinogens, but the mechanisms underlying the carcinogenesis are not entirely understood. Our study was designed to elucidate the mechanisms of DNA damage in cadmium-induced malignant transformation of human bronchial epithelial cells. We analyzed cell cycle, apoptosis, DNA damage, gene expression, genomic instability, and the sequence of exons in DNA repair genes in several kinds of cells. These cells consisted of untreated control cells, cells in the fifth, 15th, and 35th passage of cadmium-treated cells, and tumorigenic cells from nude mice using flow cytometry, Hoechst 33258 staining, comet assay, quantitative real-time polymerase chain reaction (PCR), Western blot analysis, random amplified polymorphic DNA (RAPD)-PCR, and sequence analysis. We observed a progressive increase in cell population of the G0/G1 phase of the cell cycle and the rate of apoptosis, DNA damage, and cadmium-induced apoptotic morphological changes in cerebral cortical neurons during malignant transformation. Gene expression analysis revealed increased expression of cell proliferation (PCNA), cell cycle (CyclinD1), pro-apoptotic activity (Bax), and DNA damage of the checkpoint genes ATM, ATR, Chk1, Chk2, Cdc25A. Decreased expression of the anti-apoptotic gene Bcl-2 and the DNA repair genes hMSH2, hMLH1, ERCC1, ERCC2, and hOGG1 was observed. RAPD-PCR revealed genomic instability in cadmium-exposed cells, and sequence analysis showed mutation of exons in hMSH2, ERCC1, XRCC1, and hOGG1 in tumorigenic cells. This study suggests that Cadmium can increase cell apoptosis and DNA damage, decrease DNA repair capacity, and cause mutations, and genomic instability leading to malignant transformation. This process could be a viable mechanism for cadmium-induced cancers.
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Affiliation(s)
- Zhiheng Zhou
- 1. School of public health, Guangzhou Medical University, Guangzhou 510182, People's Republic of China
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22
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Nzengue Y, Candéias SM, Sauvaigo S, Douki T, Favier A, Rachidi W, Guiraud P. The toxicity redox mechanisms of cadmium alone or together with copper and zinc homeostasis alteration: its redox biomarkers. J Trace Elem Med Biol 2011; 25:171-80. [PMID: 21820296 DOI: 10.1016/j.jtemb.2011.06.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2010] [Revised: 05/01/2011] [Accepted: 06/29/2011] [Indexed: 12/27/2022]
Abstract
Cadmium (Cd) is a toxic metal and can induce and/or promote diseases in humans (cancer, aging diseases, kidney and bone diseases, etc.). Its toxicity involves many mechanisms including the alteration of copper (Cu) and zinc (Zn) homeostasis leading to reactive oxygen species (ROS) production, either directly or through the inhibition of antioxidant activities. Importantly, ROS can induce oxidative damages in cells. Cadmium, Cu and Zn are also able to induce glutathione (GSH) and metallothioneins (MT) synthesis in a cell-type-dependent manner. As a consequence, the effects induced by these three metals result simultaneously from the inhibition of antioxidant activities and the induction of other factors such as GSH and MT synthesis. MT levels are regulated not only by the p53 protein in a cell-type-dependent manner, or by transcription factors such as metal-responsive transcription factor 1 (MTF-1) and cellular Zn levels but also by cellular GSH level. As described in the literature, DNA damage, GSH and MT levels are sensitive biomarkers used to identify Cd-induced toxicity alone or together with Cu and Zn homeostasis alteration.
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Affiliation(s)
- Yves Nzengue
- INAC/SCIB UMR-E3 CEA/UJF, Laboratoire Lésions des Acides Nucléiques, CEA-Grenoble, 17 rue des Martyrs, 38054 Grenoble cedex 9, France.
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23
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Heintze E, Aguilera C, Davis M, Fricker A, Li Q, Martinez J, Gage MJ. Toxicity of depleted uranium complexes is independent of p53 activity. J Inorg Biochem 2011; 105:142-8. [PMID: 21194611 PMCID: PMC3018829 DOI: 10.1016/j.jinorgbio.2010.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Revised: 10/19/2010] [Accepted: 10/20/2010] [Indexed: 11/22/2022]
Abstract
The p53 tumor suppressor protein is one of the key checkpoints in cellular response to a variety of stress mechanisms, including exposure to various toxic metal complexes. Previous studies have demonstrated that arsenic and chromium complexes are able to activate p53, but there is a dearth of data investigating whether uranium complexes exhibit similar effects. The use of depleted uranium (DU) has increased in recent years, raising concern about DU's potential carcinogenic effects. Previous studies have shown that uranyl acetate and uranyl nitrate are capable of inducing DNA strand breaks and potentially of inducing oxidative stress through free radical generation, two potential mechanisms for activation of p53. Based on these studies, we hypothesized that either uranyl acetate or uranyl nitrate could act as an activator of p53. We tested this hypothesis using a combination of cytotoxicity assays, p53 activity assays, western blotting and flow cytometry. All of our results demonstrate that there is not a p53-mediated response to either uranyl acetate or uranyl nitrate, demonstrating that any cellular response to uranium exposure likely occurs in a p53-independent fashion under the conditions studied.
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Affiliation(s)
- Ellie Heintze
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ 86011
| | - Camille Aguilera
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ 86011
| | - Malia Davis
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ 86011
| | - Avery Fricker
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ 86011
| | - Qiang Li
- Department of Cell Biology and Anatomy, Arizona Cancer Center, Tucson, AZ, 85724
| | - Jesse Martinez
- Department of Cell Biology and Anatomy, Arizona Cancer Center, Tucson, AZ, 85724
| | - Matthew J. Gage
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ 86011
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Yu X, Sidhu JS, Hong S, Robinson JF, Ponce RA, Faustman EM. Cadmium induced p53-dependent activation of stress signaling, accumulation of ubiquitinated proteins, and apoptosis in mouse embryonic fibroblast cells. Toxicol Sci 2011; 120:403-12. [PMID: 21252392 DOI: 10.1093/toxsci/kfr010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The tumor suppressor oncoprotein, p53, is a critical regulator of stress-induced growth arrest and apoptosis. p53 activity is regulated through the ubiquitin proteasome system (UPS) with stress-induced disruption leading to increased accumulation of p53, resulting in growth arrest. In the present study, we investigate the role of p53 to determine sensitivity to cadmium (Cd) and whether induction of stress signaling responses and perturbation of the UPS are involved in Cd-induced cytotoxicity and apoptosis. We treated synchronously cultured p53 transgenic mouse embryonic fibroblasts, both wild-type p53+/+ and knockout p53-/- cells, with cadmium chloride (Cd, 0.5-20μM) for 24 h. Cd-induced cytotoxicity was assessed by cellular morphology disruption and neutral red dye uptake assay. Proteins in the stress signaling pathway, including p38 mitogen-activated protein kinase (MAPK) and stress-activated protein kinase/c-Jun NH2-terminal kinase (SAPK/JNK); ubiquitination, such as high-molecular weight of polyubiquitinated proteins (HMW-polyUb); and apoptotic pathways, were all measured. We found that Cd induced p53-dependent cytotoxicity in the p53+/+ cells, which exhibited a twofold greater sensitivity. We observed a dose-dependent stimulation of p38 MAPK and SAPK/JNK phosphorylation that corresponded to accumulation of HMW-polyUb conjugates and lead to the induction of apoptosis, as evidenced by the elevation of cleaved caspase-3. Our study suggests that Cd-mediated cytotoxicity and induction of stress signaling responses, elevated accumulation of HMW-polyUb conjugates, and resulting apoptosis are all dependent on p53 status.
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Affiliation(s)
- Xiaozhong Yu
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105, USA
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25
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Mondal MS, Gabriels J, McGinnis C, Magnifico M, Marsilje TH, Urban L, Collis A, Bojanic D, Biller SA, Frieauff W, Martus HJ, Suter W, Bentley P. High-Content Micronucleus Assay in Genotoxicity Profiling: Initial-Stage Development and Some Applications in the Investigative/Lead-Finding Studies in Drug Discovery. Toxicol Sci 2010; 118:71-85. [DOI: 10.1093/toxsci/kfq181] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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26
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Mantha M, Jumarie C. Cadmium-induced hormetic effect in differentiated Caco-2 cells: ERK and p38 activation without cell proliferation stimulation. J Cell Physiol 2010; 224:250-61. [PMID: 20232314 DOI: 10.1002/jcp.22128] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cadmium (Cd) is a toxic metal that enters the food chain. Following oral ingestion, the intestinal epithelium may in part protect against Cd toxicity but is also a target tissue. Using human enterocytic-like Caco-2 cells, we have previously shown differences in sensitivity to Cd according to the differentiation status. The present study focuses on Cd effects on differentiated cells. Concentration and time-dependent increases in MTT (3-[4,5-dimethyl-2-thiazol-2-yl]-2,5-diphenyltetrazolium bromide assay) activity were observed in post-confluent cultures exclusively, with a twofold maximal stimulation in 21-day-old cells exposed to 10 microM Cd for 24 h. No concomitant increase in [methyl-(3)H] thymidine incorporation was noted and Cd did not modify cell distribution in the cell-cycle phases. However, Cd-induced increase in MTT activity was inhibited by cycloheximine as well as by inhibitors of ERK1/2 and p38, but not by that of JNK. Consistently, Cd increased the levels of ERK1/2 and p38 phosphorylation. Inhibition of Ras-GTP or PI3K enhanced the stimulatory effect of Cd, whereas mTOR inhibition had no effect. Inhibition of G protein-phospholipase and PKC decreased MTT stimulation. These results show a hormesis-like stimulation of Cd on MTT activity in differentiated intestinal cells exclusively. This effect is not related to cell proliferation but more likely to increased protein synthesis which involves ERK1/2 and p38 cascades and possibly PLC-beta signaling pathways. Because growth-related differentiation of intestinal cells is linked to the selective and sequential activation of MAPKs, the impacts that these Cd-induced perturbations in signaling pathways may have on intestinal functions clearly deserve to be investigated.
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Affiliation(s)
- Marc Mantha
- Département des Sciences Biologiques, Centre TOXEN, Université du Québec à Montréal, Montréal, Québec, Canada
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Kandala PK, Srivastava SK. Activation of checkpoint kinase 2 by 3,3'-diindolylmethane is required for causing G2/M cell cycle arrest in human ovarian cancer cells. Mol Pharmacol 2010; 78:297-309. [PMID: 20444961 DOI: 10.1124/mol.110.063750] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
We evaluated the effect of 3,3'-diindolylmethane (DIM) in ovarian cancer cells. DIM treatment inhibited the growth of SKOV-3, TOV-21G, and OVCAR-3 ovarian cancer cells in both a dose- and time-dependent manner with effective concentrations ranging from 40 to 100 muM. Growth-inhibitory effects of DIM were mediated by cell cycle arrest in G(2)/M phase in all the three cell lines. G(2)/M arrest was associated with DNA damage as indicated by phosphorylation of H(2)A.X at Ser139 and activation of checkpoint kinase 2 (Chk2) in all the three cell lines. Other G(2)/M regulatory molecules such as Cdc25C, Cdk1, cyclin B1 were down-regulated by DIM. Cycloheximide or Chk2 inhibitor pretreatment abrogated not only activation of Chk2 but also G(2)/M arrest and apoptosis mediated by DIM. To further establish the involvement of Chk2 in DIM-mediated G(2)/M arrest, cells were transfected with dominant-negative Chk2 (DN-Chk2). Blocking Chk2 activation by DN-Chk2 completely protected cells from DIM-mediated G(2)/M arrest. These results were further confirmed in Chk2 knockout DT40 lymphoma cells, in which DIM failed to cause cell cycle arrest. These results clearly indicate the requirement of Chk2 activation to cause G(2)/M arrest by DIM in ovarian cancer cells. Moreover, blocking Chk2 activation also abrogates the apoptosis-inducing effects of DIM. Furthermore, our results show that DIM treatment cause ROS generation. Blocking ROS generation by N-acetyl cysteine protects the cells from DIM-mediated G(2)/M arrest and apoptosis. Our results establish Chk2 as a potent molecular target of DIM in ovarian cancer cells and provide the rationale for further clinical investigation of DIM.
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Affiliation(s)
- Prabodh K Kandala
- Department of Biomedical Sciences, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
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Bork U, Lee WK, Kuchler A, Dittmar T, Thévenod F. Cadmium-induced DNA damage triggers G(2)/M arrest via chk1/2 and cdc2 in p53-deficient kidney proximal tubule cells. Am J Physiol Renal Physiol 2009; 298:F255-65. [PMID: 19923412 DOI: 10.1152/ajprenal.00273.2009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Carcinogenesis is a multistep process that is frequently associated with p53 inactivation. The class 1 carcinogen cadmium (Cd(2+)) causes renal cancer and is known to inactivate p53. G(2)/mitosis (M) arrest contributes to stabilization of p53-deficient mutated cells, but its role and regulation in Cd(2+)-exposed p53-deficient renal cells are unknown. In p53-inactivated kidney proximal tubule (PT) cells, comet assay experiments showed that Cd(2+) (50-100 microM) induced DNA damage within 1-6 h. This was associated with peak formation of reactive oxygen species (ROS) at 1-3 h, measured with dihydrorhodamine 123, and G(2)/M cell cycle arrest at 6 h, which were abolished by the antioxidant alpha-tocopherol (100 microM). Cd(2+)-induced G(2)/M arrest was enhanced approximately twofold on release from cell synchronization (double thymidine block or nocodazole) and resulted in approximately twofold increase of apoptosis, indicating that G(2)/M arrest mirrors DNA damage and toxicity. The Chk1/2 kinase inhibitor UCN-01 (0.3 microM), which relieves G(2)/M transition block, abolished Cd(2+)-induced G(2) arrest and increased apoptosis. This was accompanied by prevention of Cd(2+)-induced cyclin-dependent kinase cdc2 phosphorylation at tyrosine 15, as shown by immunofluorescence microscopy and immunoblotting. The data indicate that in p53-inactivated PT cells Cd(2+)-induced ROS formation and DNA damage trigger signaling of checkpoint activating kinases ataxia telangiectasia-mutated kinase (ATM) and ataxia telangiectasia and Rad3-related kinase (ATR) to cause G(2)/M arrest. This may promote survival of premalignant PT cells and Cd(2+) carcinogenesis.
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Affiliation(s)
- Ulrich Bork
- Department of Physiology & Pathophysiology, University of Witten/Herdecke, Witten, Germany
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Chatterjee S, Kundu S, Sengupta S, Bhattacharyya A. Divergence to apoptosis from ROS induced cell cycle arrest: effect of cadmium. Mutat Res 2009; 663:22-31. [PMID: 19475715 DOI: 10.1016/j.mrfmmm.2008.12.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Recently, the role of cadmium (Cd) in immunosupression has gained importance. Nevertheless, the signaling pathways underlying cadmium-induced immune cell death remains largely unclear. In accordance to our previous in vivo report, and to evaluate the further details of the mechanism, we have investigated the effects of cadmium (CdCl(2), H(2)O) on cell cycle regulation and apoptosis in splenocytes in vitro. Our results have revealed that reactive oxygen species (ROS) and p21 are involved in cell cycle arrest in a p53 independent manner but late hour apoptotic response was accompanied by the p53 up-regulation, loss of mitochondrial transmembrane potential (MTP), down-regulation of Bcl-xl, activation of caspase-3 and release of cytochrome c (Cyt c). However, pifithrin alfa (PFT-alpha), an inhibitor of p53, fails to rescue the cells from the cadmium-induced cell cycle arrest but prevents Bcl-xl down-regulation and loss of Deltapsi(m), which indicates that there is an involvement of p53 in apoptosis. In contrast, treatment with N-acetyl cysteine (NAC) can prevent cell cycle arrest and p21 up-regulation at early hours. Although it is clear that, NAC has no effect on apoptosis, p53 expression and MPT changes at late stage events. Taken together, we have demonstrated that cadmium promotes ROS generation, which potently initiates the cell cycle arrest at early hours and finally induces p53-dependent apoptosis at later part of the event.
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Affiliation(s)
- Soumya Chatterjee
- Department of Environmental Science, University of Kalyani, West Bengal, India
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Cardin GB, Mantha M, Jumarie C. Resistance to cadmium as a function of Caco-2 cell differentiation: role of reactive oxygen species in cadmium- but not zinc-induced adaptation mechanisms. Biometals 2009; 22:753-69. [DOI: 10.1007/s10534-009-9223-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2008] [Accepted: 03/03/2009] [Indexed: 11/27/2022]
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Nzengue Y, Steiman R, Guiraud P. Characterization of the cell death induced by cadmium in HaCaT and C6 cell lines. Free Radic Res 2008; 42:142-53. [PMID: 18297607 DOI: 10.1080/10715760701837100] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Cell death resulting from cadmium (Cd) intoxication has been confirmed to induce both necrosis and apoptosis. The ratio between both types of cell death is dose- and cell-type-dependent. This study used the human keratinocytes HaCaT expressing a mutated p53 and the rat glial cells C6 expressing a wild p53 as models to characterize Cd-induced apoptosis, using sub-lethal and lethal doses. At these concentrations, features of apoptosis were observed 24 h after C6 cell treatment: apoptotic DNA fragmentation and caspase-9 activation, whereas Cd did not induce caspase-3. In HaCaT, Cd did not induce apoptotic DNA fragmentation or caspase-9 and -3 activation. The results also showed that the inhibition of p53 led to a resistance of the C6 cells to 20 microm Cd, decreased the apoptosis and increased the metallothioneins in these cells. p53 restoration increased the sensitivity of HaCaT cells to Cd but did not affect the MT expression. The results suggest that Cd induced apoptosis in C6 cells but a non-apoptotic cellular death in HaCaT cells.
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Affiliation(s)
- Yves Nzengue
- Université Joseph Fourier, Domaine de La Merci, La Tronche, France
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Chatterjee S, Kundu S, Bhattacharyya A. Mechanism of cadmium induced apoptosis in the immunocyte. Toxicol Lett 2008; 177:83-9. [DOI: 10.1016/j.toxlet.2007.12.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2007] [Revised: 12/01/2007] [Accepted: 12/04/2007] [Indexed: 11/24/2022]
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Nzengue Y, Steiman R, Garrel C, Lefèbvre E, Guiraud P. Oxidative stress and DNA damage induced by cadmium in the human keratinocyte HaCaT cell line: Role of glutathione in the resistance to cadmium. Toxicology 2008; 243:193-206. [DOI: 10.1016/j.tox.2007.10.005] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2007] [Revised: 10/04/2007] [Accepted: 10/08/2007] [Indexed: 11/30/2022]
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