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Liu D, Yu J, Xie J, Zhang Z, Tang C, Yu T, Chen S, Hong Z, Wang C. PbAc Triggers Oxidation and Apoptosis via the PKA Pathway in NRK-52E Cells. Biol Trace Elem Res 2021; 199:2687-2694. [PMID: 32926327 DOI: 10.1007/s12011-020-02378-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 09/06/2020] [Indexed: 01/28/2023]
Abstract
This study aimed to investigate the mechanism of the lead exposure-induced oxidative stress and apoptosis of renal tubular epithelial cells. We explored the effects of lead acetate (PbAc) on the oxidation and apoptosis of renal proximal tubular cells (NRK-52E) through in vitro experiments. Results showed that PbAc induced dose-dependent reactive oxygen species (ROS) accumulation in NRK-52E cells, and the activities of superoxide dismutase (SOD) and glutathione (GSH) decreased, whereas the malondialdehyde (MDA) content increased. Under the exposure of 40 and 80 μM PbAc, the mRNA level of B cell lymphoma-2 (Bcl-2) in the cells decreased, the mRNA levels of Bcl-2-associated X protein (Bax) and caspase-3 increased, and apoptosis was obvious. Furthermore, the nicotinamide adenine dinucleotide phosphate oxidase 4 (Nox4) activity was enhanced by PbAc in a dose-dependent manner. The mRNA levels of protein kinase A (PKA) were upregulated by PbAc. H-89, a PKA inhibitor, suppressed PKA activation, ROS accumulation, and Nox4 activity in NRK-52E cells. Our results indicated that PbAc potentially stimulated oxidative stress and apoptosis in NRK-52E cells by increasing Nox4-dependent ROS production via the PKA signaling pathway.
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Affiliation(s)
- Duanya Liu
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Jun Yu
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Jie Xie
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Zhaoyu Zhang
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Caoli Tang
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Tianmei Yu
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Shouni Chen
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Zhidan Hong
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, 430071, People's Republic of China
| | - Chunhong Wang
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, Wuhan, 430071, People's Republic of China.
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Kim JY, An MJ, Shin GS, Lee HM, Kim MJ, Kim CH, Kim JW. Mercury Chloride but Not Lead Acetate Causes Apoptotic Cell Death in Human Lung Fibroblast MRC5 Cells via Regulation of Cell Cycle Progression. Int J Mol Sci 2021; 22:ijms22052494. [PMID: 33801350 PMCID: PMC7958599 DOI: 10.3390/ijms22052494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 11/16/2022] Open
Abstract
Heavy metals are important for various biological systems, but, in excess, they pose a serious risk to human health. Heavy metals are commonly used in consumer and industrial products. Despite the increasing evidence on the adverse effects of heavy metals, the detailed mechanisms underlying their action on lung cancer progression are still poorly understood. In the present study, we investigated whether heavy metals (mercury chloride and lead acetate) affect cell viability, cell cycle, and apoptotic cell death in human lung fibroblast MRC5 cells. The results showed that mercury chloride arrested the sub-G1 and G2/M phases by inducing cyclin B1 expression. In addition, the exposure to mercury chloride increased apoptosis through the activation of caspase-3. However, lead had no cytotoxic effects on human lung fibroblast MRC5 cells at low concentration. These findings demonstrated that mercury chloride affects the cytotoxicity of MRC5 cells by increasing cell cycle progression and apoptotic cell death.
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Affiliation(s)
| | | | | | | | | | | | - Jung-Woong Kim
- Correspondence: ; Tel.: +82-2-820-6682; Fax: +82-2-815-6682
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Ye F, Li X, Liu Y, Chang W, Liu W, Yuan J, Chen J. Hemin provides protection against lead neurotoxicity through heme oxygenase 1/carbon monoxide activation. J Appl Toxicol 2018; 38:1353-1364. [PMID: 29797346 DOI: 10.1002/jat.3646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/23/2018] [Accepted: 04/17/2018] [Indexed: 12/19/2022]
Abstract
The neurotoxicity of lead (Pb) is well established, and oxidative stress is strongly associated with Pb-induced neurotoxicity. Heme oxygenase 1 (HO-1) is an important antioxidative enzyme for protection against oxidative stress in many disease models. In this study, we applied hemin, the substrate and a well-known inducer of HO-1, to investigate the possible role of HO-1 in protecting against Pb neurotoxicity. Hemin can significantly attenuate Pb acetate-induced cell death and oxidative stress in the hippocampus and frontal cortex of developmental rats. Consistent with in vivo results, the protective effects of hemin were also observed in SH-SY5Y cells after inducing cell survival and maintaining redox balance. However, knocking down HO-1 could significantly abolish the cytoprotective action of hemin against Pb toxicity, confirming HO-1 contributed to the protection. Finally, the HO-1-derived production of carbon monoxide, but not of bilirubin or Fe2+ , mediated the protective effects of HO-1 activation induced by hemin treatment against Pb-induced cell death and oxidative stress in SHSY5Y cells. Overall, this study showed that hemin provided protection against Pb neurotoxicity by HO-1/carbon monoxide activation.
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Affiliation(s)
- Fang Ye
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.,Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xiaoyi Li
- Center for Translational Medicine, Wuhan Union Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yawen Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.,Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Wei Chang
- Department of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Wenqi Liu
- Department of Parasitology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jing Yuan
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.,Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jun Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.,Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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Hu H, Zhang Y, Shi Y, Feng L, Duan J, Sun Z. Microarray-based bioinformatics analysis of the combined effects of SiNPs and PbAc on cardiovascular system in zebrafish. Chemosphere 2017; 184:1298-1309. [PMID: 28679150 DOI: 10.1016/j.chemosphere.2017.06.112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 06/20/2017] [Accepted: 06/27/2017] [Indexed: 06/07/2023]
Abstract
With rapid development of nanotechnology and growing environmental pollution, the combined toxic effects of SiNPs and pollutants of heavy metals like lead have received global attentions. The aim of this study was to explore the cardiovascular effects of the co-exposure of SiNPs and lead acetate (PbAc) in zebrafish using microarray and bioinformatics analysis. Although there was no other obvious cardiovascular malformation except bleeding phenotype, bradycardia, angiogenesis inhibition and declined cardiac output in zebrafish co-exposed of SiNPs and PbAc at NOAEL level, significant changes were observed in mRNA and microRNA (miRNA) expression patterns. STC-GO analysis indicated that the co-exposure might have more toxic effects on cardiovascular system than that exposure alone. Key differentially expressed genes were discerned out based on the Dynamic-gene-network, including stxbp1a, ndfip2, celf4 and gsk3b. Furthermore, several miRNAs obtained from the miRNA-Gene-Network might play crucial roles in cardiovascular disease, such as dre-miR-93, dre-miR-34a, dre-miR-181c, dre-miR-7145, dre-miR-730, dre-miR-129-5p, dre-miR-19d, dre-miR-218b, dre-miR-221. Besides, the analysis of miRNA-pathway-network indicated that the zebrafish were stimulated by the co-exposure of SiNPs and PbAc, which might cause the disturbance of calcium homeostasis and endoplasmic reticulum stress. As a result, cardiac muscle contraction might be deteriorated. In general, our data provide abundant fundamental research clues to the combined toxicity of environmental pollutants and further in-depth verifications are needed.
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Affiliation(s)
- Hejing Hu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Yannan Zhang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Yanfeng Shi
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Lin Feng
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
| | - Junchao Duan
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China.
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, PR China
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Li X, Ye F, Li L, Chang W, Wu X, Chen J. The role of HO-1 in protection against lead-induced neurotoxicity. Neurotoxicology 2015; 52:1-11. [PMID: 26542248 DOI: 10.1016/j.neuro.2015.10.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 10/05/2015] [Accepted: 10/28/2015] [Indexed: 12/01/2022]
Abstract
Lead is a pervasive and persistent environmental pollutant that exerts deleterious effects on all living organisms and continues to threaten public health on a global scale. Heme oxygenase-1 (HO-1) is a stress-inducible enzyme that mediates antioxidative and cytoprotective effects to maintain cellular redox homeostasis and protect cells from oxidative stress. This study was designed to explore the role of HO-1 in protection against lead neurotoxicity and the signaling pathways involved. Lead acetate (PbAc) exposure resulted in increased HO-1 expression in primary rat hippocampal neurons and SH-SY5Y cells. PbAc-induced intracellular reactive oxygen species (ROS) also increased, and cell viability decreased in SH-SY5Y cells. We further demonstrated that HO-1 could be induced by PbAc through the P38, ERK1/2, and PI3K/AKT signaling pathways in a ROS-dependent manner and through the JNK pathway in a ROS-independent manner. Further investigation revealed that HO-1 overexpression significantly restrained cell apoptosis and ROS production induced by PbAc in SH-SY5Y cells. Moreover, HO-1 knockdown aggravated PbAc-induced cell apoptosis and ROS production. Our results indicated that HO-1 was a novel protective factor that could efficiently inhibit PbAc-induced oxidative stress and cell death in the nervous system, thereby providing the potential therapeutic strategies for the prevention and treatment of lead-related diseases.
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Affiliation(s)
- Xiaoyi Li
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Fang Ye
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Lili Li
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Wei Chang
- Department of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, PR China
| | - Xiongwen Wu
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
| | - Jun Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China; Ministry of Education Key Lab for Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
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