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Lu YC, Chiang CY, Chen SP, Hsu YW, Chen WY, Chen CJ, Kuan YH, Wu SW. Chlorpyrifos-induced suppression of the antioxidative defense system leads to cytotoxicity and genotoxicity in macrophages. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 108:104468. [PMID: 38759849 DOI: 10.1016/j.etap.2024.104468] [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: 06/05/2023] [Revised: 04/20/2024] [Accepted: 05/13/2024] [Indexed: 05/19/2024]
Abstract
Chlorpyrifos, widely used for pest control, is known to have various harmful effects, although its toxic effects in macrophages and the mechanisms underlying its toxicity remain unclear. The present study investigated the toxic effects of chlorypyrifos in a macrophage cell line. Here, we found that chlorpyrifos induced cytotoxicity and genotoxicity in RAW264.7 macrophages. Moreover, chlorpyrifos induced intracellular ROS production, subsequently leading to lipid peroxidation. Chlorpyrifos reduced the activation of antioxidative enzymes including superoxide dismutase, catalase, and glutathione peroxidase. Chlorpyrifos upregulated HO-1 expression and activated the Keap1-Nrf2 pathway, as indicated by enhanced Nrf2 phosphorylation and Keap1 degradation. Chlorpyrifos exerted effects on the following in a dose-dependent manner: cytotoxicity, genotoxicity, lipid peroxidation, intracellular ROS production, antioxidative enzyme activity reduction, HO-1 expression, Nrf2 phosphorylation, and Keap1 degradation. Notably, N-acetyl-L-cysteine successfully inhibited chlorpyrifos-induced intracellular ROS generation, cytotoxicity, and genotoxicity. Thus, chlorpyrifos may induce cytotoxicity and genotoxicity by promoting intracellular ROS production and suppressing the antioxidative defense system activation in macrophages.
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Affiliation(s)
- Yin-Che Lu
- Min-Hwei Junior College of Health Care Management, Tainan, Taiwan, ROC; Division of Hematology-Oncology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
| | - Chen-Yu Chiang
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Shih-Pin Chen
- Department of Internal Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC; Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan, ROC
| | - Yu-Wei Hsu
- Department of Pharmacy, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
| | - Wen-Ying Chen
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Chun-Jung Chen
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan, ROC
| | - Yu-Hsiang Kuan
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC; Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan, ROC.
| | - Sheng-Wen Wu
- Department of Internal Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC; Division of Nephrology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan, ROC
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Tsai PK, Chiang CY, Wang TC, Yeh KL, Chen WY, Chen CJ, Tseng CC, Deng LH, Tzen JTC, Lu YC, Kuan YH. Wogonin induces apoptosis in macrophages by exhibiting cytotoxic and genotoxic effects. ENVIRONMENTAL TOXICOLOGY 2024; 39:2927-2936. [PMID: 38303669 DOI: 10.1002/tox.24150] [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: 10/11/2023] [Revised: 01/05/2024] [Accepted: 01/18/2024] [Indexed: 02/03/2024]
Abstract
Macrophages play an important role in defending the body against invading pathogens. In the face of pathogens, macrophages become activated and release toxic materials that disrupt the pathogens. Macrophage overactivation can lead to severe illness and inflammation. Wogonin has several therapeutic effects, including anti-inflammatory, anticancer, antioxidant, and neuroprotective effects. No studies have investigated the cytotoxic effects of wogonin at concentrations of more than 0.1 mM in RAW264.7 cells. In this study, RAW 264.7 cells were treated with wogonin, which, at concentrations of more than 0.1 mM, had cytotoxic and genotoxic effects in the RAW264.7 cells, leading to apoptosis and necrosis. Further, wogonin at concentrations of more than 0.1 mM induced caspase-3, caspase-8, and caspase-9 activation and mitochondrial dysfunction and death receptor expression. These results suggest that wogonin induces apoptosis through upstream intrinsic and extrinsic pathways by exhibiting cytotoxic and genotoxic effects.
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Affiliation(s)
- Ping-Kun Tsai
- Department of Internal Medicine, Zuoying Armed Forces General Hospital, Kaohsiung, Taiwan
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Emergency Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
- Department of Nursing, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
| | - Chen-Yu Chiang
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Tzu-Ching Wang
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Kun-Lin Yeh
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Wen-Ying Chen
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chun-Jung Chen
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ching-Chi Tseng
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, China
- Department of Dermatology, Shiso Municipal Hospital, Hyogo, Japan
| | - Lie-Hua Deng
- Department of Dermatology, The First Affiliated Hospital of Jinan University and Jinan University Institute of Dermatology, Guangzhou, China
- Department of Dermatology, The Fifth Affiliated Hospital of Jinan University, Heyuan, China
| | - Jason Tze Cheng Tzen
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, Taiwan
| | - Yin-Che Lu
- Min-Hwei Junior College of Health Care Management, Tainan, Taiwan
- Division of Hematology-Oncology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Yu-Hsiang Kuan
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan
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Eskandari A, Yim EKF, Glerum DM, Tsui TY. In-Vitro Study of Indium (III) Sulfate-Containing Medium on the Viability and Adhesion Behaviors of Human Dermal Fibroblast on Engineered Surfaces. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16103814. [PMID: 37241441 DOI: 10.3390/ma16103814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/10/2023] [Accepted: 05/14/2023] [Indexed: 05/28/2023]
Abstract
Tissues and organs consist of cells organized in specified patterns that support their function, as exemplified by tissues such as skin, muscle, and cornea. It is, therefore, important to understand how external cues, such as engineered surfaces or chemical contaminants, can influence the organization and morphology of cells. In this work, we studied the impact of indium sulfate on human dermal fibroblast (GM5565) viability, production of reactive oxygen species (ROS), morphology, and alignment behavior on tantalum/silicon oxide parallel line/trench surface structures. The viability of cells was measured using the alamarBlue™ Cell Viability Reagent probe, while the ROS levels in cells were quantified using cell-permeant 2',7'-dichlorodihydrofluorescein diacetate. Cell morphology and orientation on the engineered surfaces were characterized using fluorescence confocal and scanning electron microscopy. When cells were cultured in media containing indium (III) sulfate, the average cell viability decreased by as much as ~32% and the concentration of cellular ROS increased. Cell geometry became more circular and compact in the presence of indium sulfate. Even though actin microfilaments continue to preferentially adhere to tantalum-coated trenches in the presence of indium sulfate, the cells are less able to orient along the line axes of the chips. Interestingly, the indium sulfate-induced changes in cell alignment behavior are pattern dependent-a larger proportion of adherent cells on structures with line/trench widths in the range of 1 μm and 10 μm lose the ability to orient themselves, compared to those grown on structures with line widths smaller than 0.5 μm. Our results show that indium sulfate impacts the response of human fibroblasts to the surface structure to which they adhere and underscores the importance of evaluating cell behaviors on textured surfaces, especially in the presence of potential chemical contaminants.
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Affiliation(s)
- Ali Eskandari
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Evelyn K F Yim
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - D Moira Glerum
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Ting Y Tsui
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
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Cytotoxicity and Apoptotic Mechanism of 2-Hydroxyethyl Methacrylate via Genotoxicity and the Mitochondrial-Dependent Intrinsic Caspase Pathway and Intracellular Reactive Oxygen Species Accumulation in Macrophages. Polymers (Basel) 2022; 14:polym14163378. [PMID: 36015636 PMCID: PMC9412604 DOI: 10.3390/polym14163378] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/23/2022] Open
Abstract
Macrophages are mainly active cells of the immune system and play a role in the defense of pathogens. However, the overactivation of macrophages by fatal pathogens can result in toxic responses. 2-hydroxyethyl methacrylate (HEMA), which is a hydrophilic monomer, is used in dental adhesive reagents and composite resins as well as biocompatible hydrogels. The mechanisms underlying the genotoxicity engendered by HEMA-induced apoptosis that leads to cytotoxicity remain unclear. Accordingly, this study was conducted to clarify such mechanisms. The results showed that HEMA induced cell toxicity in RAW264.7 macrophages depending on the concentration. A higher HEMA concentration was associated with a higher level of apoptosis and genotoxicity. Moreover, HEMA induced a concentration-dependent increase in mitochondrial dysfunction and the intrinsic caspase pathway, including the activation of caspase-3 and caspase-9. HEMA was also found to upregulate intracellular reactive oxygen species generation and to decrease the activity of antioxidant enzymes, including superoxide dismutase and catalase. Taken together, the mitochondrial-dependent intrinsic caspase pathway and intracellular reactive oxygen species accumulation were found to mediate HEMA-induced genotoxicity and apoptosis, leading to cytotoxicity in RAW264.7 macrophages.
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Eskandari A, Glerum DM, Tsui TY. Influence of Indium (III) Chloride on Human Dermal Fibroblast Cell Adhesion on Tantalum/Silicon Oxide Nano-Composites. MATERIALS 2022; 15:ma15103577. [PMID: 35629602 PMCID: PMC9147986 DOI: 10.3390/ma15103577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/05/2022] [Accepted: 05/13/2022] [Indexed: 12/10/2022]
Abstract
Cell adhesion is an essential biological function for division, migration, signaling and tissue development. While it has been demonstrated that this cell function can be modified by using nanometer-scale surface topographic structures, it remains unknown how contaminants such as indium (III) ion might influence this specific cell behavior. Herein, the influence of indium chloride on human dermal fibroblast (GM5565) adhesion characteristics was investigated, given the frequent contact of contaminants with skin. The morphology of the adherent cells and their mitochondrial reticulum was characterized on cell culture dishes and nanopatterned surfaces by using fluorescence confocal microscopy and scanning electron microscopy. Results showed a significant proportion of cells lost their ability to align preferentially along the line axes of the nanopattern upon exposure to 3.2 mM indium chloride, with cells aligned within 10° of the pattern line axes reduced by as much as ~70%. Concurrent with the cell adhesion behaviors, the mitochondria in cells exposed to indium chloride exhibit a punctate staining that contrasts with the normal network of elongated tubular geometry seen in control cells. Our results demonstrate that exposure to indium chloride has detrimental effects on the behavior of human fibroblasts and adversely impacts their mitochondrial morphology. This shows the importance of evaluating the biological impacts of indium compounds.
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Affiliation(s)
- Ali Eskandari
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada;
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - D. Moira Glerum
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Correspondence: (D.M.G.); (T.Y.T.)
| | - Ting Y. Tsui
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada;
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Correspondence: (D.M.G.); (T.Y.T.)
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Aru B, Günay A, Demirel GY, Gürek AG, Atilla D. Evaluation of histone deacetylase inhibitor substituted zinc and indium phthalocyanines for chemo- and photodynamic therapy. RSC Adv 2021; 11:34963-34978. [PMID: 35494743 PMCID: PMC9042886 DOI: 10.1039/d1ra05404j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 10/14/2021] [Indexed: 01/03/2023] Open
Abstract
In this study, we synthesized and characterized 3-hydroxypyridin-2-thione (3-HPT) bearing zinc (ZnPc-1 and ZnPc-2) and indium (InPc-1 and InPc-2) phthalocyanine (Pc) derivatives, either non-peripherally or peripherally substituted as photosensitizer (PS) agents and evaluated their anti-cancer efficacy on two breast cancer cell lines, MDA-MB-231 and MCF-7 as well as a human endothelial cell line, HUVEC. Our results indicated different localization patterns between ZnPcs and InPcs in addition to enhanced effects on the mitochondrial network for InPcs. Moreover, peripheral or non-peripheral substitution of HDACi moieties altered cellular localization between ZnPc-1 and ZnPc-2, leading to increased IC50 values along with decreased anti-cancer activity for non-peripheral substitution. When considering the compounds' differential effects in vitro, our data indicates that further research is required to determine the ideal Pcs for anti-cancer PDT treatments since the core metals of the compounds have affected the cellular localization, and positioning of the chemotherapeutic residues may inhibit cellular penetrance.
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Affiliation(s)
- Başak Aru
- Faculty of Medicine, Immunology Department, Yeditepe University 34755 Ataşehir İstanbul Turkey
| | - Aysel Günay
- Department of Chemistry, Gebze Technical University 41400 Gebze Kocaeli Turkey
| | | | - Ayşe Gül Gürek
- Department of Chemistry, Gebze Technical University 41400 Gebze Kocaeli Turkey
| | - Devrim Atilla
- Department of Chemistry, Gebze Technical University 41400 Gebze Kocaeli Turkey
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7
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Tsai PK, Chen SP, Huang-Liu R, Chen CJ, Chen WY, Ng YY, Kuan YH. Proinflammatory Responses of 1-Nitropyrene against RAW264.7 Macrophages through Akt Phosphorylation and NF-κB Pathways. TOXICS 2021; 9:276. [PMID: 34822668 PMCID: PMC8620634 DOI: 10.3390/toxics9110276] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/06/2021] [Accepted: 10/14/2021] [Indexed: 01/11/2023]
Abstract
Air pollution is a major environmental and public health problem worldwide. A nitro-polycyclic aromatic hydrocarbon and the most abundant air pollutant in diesel engine exhaust, 1-nitropyrene (1-NP), is caused by the incomplete combustion of carbonaceous organic substances. Macrophages are effector cells of the innate immune cells that provide resistance in the peripheral tissue. The overactivation of macrophages results in inflammation. The generation of proinflammatory cytokines, such as interleukin (IL)-1β, IL-6, and tumour necrosis factor alpha, is induced by 1-NP in a concentration-dependent manner in macrophages. In this study, the production of proinflammatory mediators, such as nitrogen oxide and prostaglandin E2, was induced by 1-NP in a concentration-dependent manner through the expression of iNOS and COX2. The generation of proinflammatory cytokines, iNOS, and COX2 was induced by 1-NP through nuclear factor (NF)-κB p65 phosphorylation and the degradation of its upstream factor, IκB. Finally, Akt phosphorylation was induced by 1-NP in a concentration-dependent manner. These findings suggest that 1-NP exhibits a proinflammatory response through the NF-κB pathway activation due to Akt phosphorylation.
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Affiliation(s)
- Ping-Kun Tsai
- Department of Internal Medicine, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan;
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
| | - Shih-Pin Chen
- Department of Internal Medicine, School of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan;
- Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
| | - Rosa Huang-Liu
- School of Nutrition, Chung Shan Medical University, Taichung 40201, Taiwan;
| | - Chun-Jung Chen
- Department of Education and Research, Taichung Veterans General Hospital, Taichung 40705, Taiwan;
| | - Wen-Ying Chen
- Department of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan;
| | - Yan-Yan Ng
- Department of Pediatric, Chung Kang Branch, Cheng Ching Hospital, Taichung 40764, Taiwan;
| | - Yu-Hsiang Kuan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
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1-Nitropyrene Induced Reactive Oxygen Species-Mediated Apoptosis in Macrophages through AIF Nuclear Translocation and AMPK/Nrf-2/HO-1 Pathway Activation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9314342. [PMID: 34336119 PMCID: PMC8294986 DOI: 10.1155/2021/9314342] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/15/2021] [Accepted: 06/23/2021] [Indexed: 11/18/2022]
Abstract
1-Nitropyrene (1-NP), one of the most abundant nitropolycyclic aromatic hydrocarbons (nitro-PAHs), is generated from the incomplete combustion of carbonaceous organic compounds. 1-NP is a specific marker of diesel exhaust and is an environmental pollutant and a probable carcinogen. Macrophages participate in immune defense against the invasive pathogens in heart, lung, and kidney infection diseases. However, no evidence has indicated that 1-NP induces apoptosis in macrophages. In the present study, 1-NP was found to induce concentration-dependent changes in various cellular functions of RAW264.7 macrophages including cell viability reduction; apoptosis generation; mitochondrial dysfunction; apoptosis-inducing factor (AIF) nuclear translocation; intracellular ROS generation; activation of the AMPK/Nrf-2/HO-1 pathway; changes in the expression of BCL-2 family proteins; and depletion of antioxidative enzymes (AOE), such as glutathione peroxidase (GPx), catalase (CAT), and superoxide dismutase (SOD) These results indicate that 1-NP induced apoptosis in macrophages through AIF nuclear translocation and ROS generation due to mitochondrial dysfunction and to the depletion of AOE from the activation of the AMPK/Nrf-2/HO-1 pathway.
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Wu SW, Su CH, Ho YC, Huang-Liu R, Tseng CC, Chiang YW, Yeh KL, Lee SS, Chen WY, Chen CJ, Li YC, Lee CY, Kuan YH. Genotoxic effects of 1-nitropyrene in macrophages are mediated through a p53-dependent pathway involving cytochrome c release, caspase activation, and PARP-1 cleavage. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 213:112062. [PMID: 33618169 DOI: 10.1016/j.ecoenv.2021.112062] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Genotoxic stress from environmental pollutants plays a critical role in cytotoxicity. The most abundant nitro-polycyclic aromatic hydrocarbon in environmental pollutants, 1-nitropyrene (1-NP), is generated during fossil fuel, diesel, and biomass combustion under sunlight. Macrophages, the key regulators of the innate immune system, provide the first line of defense against pathogens. The toxic effects of 1-NP on macrophages remain unclear. Through a lactate dehydrogenase assay, we measured the cytotoxicity induced by 1-NP. Our results revealed that 1-NP induced genotoxicity also named DNA damage, including micronucleus formation and DNA strand breaks, in a concentration-dependent manner. Furthermore, 1-NP induced p53 phosphorylation and nuclear accumulation; mitochondrial cytochrome c release; caspase-3 and -9 activation and cleavage; and poly (ADP-ribose) polymerase-1 (PARP-1) cleavage in a concentration-dependent manner. Pretreatment with the PARP inhibitor, 3-aminobenzamide, significantly reduced cytotoxicity, genotoxicity, and PARP-1 cleavage induced by 1-NP. Pretreatment with the caspase-3 inhibitor, z-DEVD-fmk, significantly reduced cytotoxicity, genotoxicity, PARP-1 cleavage, and caspase 3 activation induced by 1-NP. Pretreatment with the p53 inhibitor, pifithrin-α, significantly reduced cytotoxicity, genotoxicity, PARP-1 cleavage, caspase 3 activation, and p53 phosphorylation induced by 1-NP. We propose that cytotoxicity and genotoxicity induced by 1-NP by PARP-1 cleavage via caspase-3 and -9 activation through cytochrome c release from mitochondria and its upstream p53-dependent pathway in macrophages.
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Affiliation(s)
- Sheng-Wen Wu
- Division of Nephrology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan; The School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chun-Hung Su
- Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan; Department of Internal Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yung-Chuan Ho
- School of Medical Applied Chemistry, Chung Shan Medical University, Taichung, Taiwan
| | - Rosa Huang-Liu
- School of Nutrition, Chung Shan Medical University, Taichung, Taiwan
| | - Ching-Chi Tseng
- Aerospace Center Hospital, Peking University, Beijing, China
| | - Yun-Wei Chiang
- Department of life sciences, National Chung-Hsing University, Taichung, Taiwan
| | - Kun-Lin Yeh
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Shiuan-Shinn Lee
- School of Public Health, Chung Shan Medical University, Taichung, Taiwan
| | - Wen-Ying Chen
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chun-Jung Chen
- Department of Education and Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yi-Ching Li
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chien-Ying Lee
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yu-Hsiang Kuan
- Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan.
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10
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Dussert F, Wegner KD, Moriscot C, Gallet B, Jouneau PH, Reiss P, Carriere M. Evaluation of the Dermal Toxicity of InZnP Quantum Dots Before and After Accelerated Weathering: Toward a Safer-By-Design Strategy. FRONTIERS IN TOXICOLOGY 2021; 3:636976. [PMID: 35295141 PMCID: PMC8915823 DOI: 10.3389/ftox.2021.636976] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
Quantum dots (QDs) are colloidal fluorescent semiconductor nanocrystals with exceptional optical properties. Their widespread use, particularly in light-emitting diodes (LEDs), displays, and photovoltaics, is questioning their potential toxicity. The most widely used QDs are CdSe and CdTe QDs, but due to the toxicity of cadmium (Cd), their use in electrical and electronic equipment is now restricted in the European Union through the Restriction of hazardous substances in electrical and electronic equipment (RoHS) directive. This has prompted the development of safer alternatives to Cd-based QDs; among them, InP QDs are the most promising ones. We recently developed RoHS-compliant QDs with an alloyed core composed of InZnP coated with a Zn(Se,S) gradient shell, which was further coated with an additional ZnS shell to protect the QDs from oxidative surface degradation. In this study, the toxicity of single-shelled InZnP/Zn(Se,S) core/gradient shell and of double-shelled InZnP/Zn(Se,S)/ZnS core/shell/shell QDs was evaluated both in their pristine form and after aging in a climatic chamber, mimicking a realistic environmental weathering. We show that both pristine and aged QDs, whatever their composition, accumulate in the cytoplasm of human primary keratinocytes where they form agglomerates at the vicinity of the nucleus. Pristine QDs do not show overt toxicity to cells, while aged QDs show cytotoxicity and genotoxicity and significantly modulate the mRNA expression of proteins involved in zinc homeostasis, cell redox response, and inflammation. While the three aged QDs show similar toxicity, the toxicity of pristine gradient-shell QD is higher than that of pristine double-shell QD, confirming that adding a second shell is a promising safer-by-design strategy. Taken together, these results suggest that end-of-life degradation products from InP-based QDs are detrimental to skin cells in case of accidental exposure and that the mechanisms driving this effect are oxidative stress, inflammation, and disturbance of cell metal homeostasis, particularly Zn homeostasis. Further efforts to promote safer-by-design formulations of QDs, for instance by reducing the In and Zn content and/or implementing a more robust outer shell, are therefore warranted.
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Affiliation(s)
- Fanny Dussert
- Université Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, CIBEST, Grenoble, France
| | - Karl David Wegner
- Université Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, STEP, Grenoble, France
| | - Christine Moriscot
- Integrated Structural Biology Grenoble (ISBG), UMS 3518, CNRS, CEA, Université Grenoble Alpes, Grenoble, France
| | - Benoit Gallet
- Université Grenoble-Alpes, CNRS, CEA, IBS, Grenoble, France
| | | | - Peter Reiss
- Université Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, STEP, Grenoble, France
| | - Marie Carriere
- Université Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, CIBEST, Grenoble, France
- *Correspondence: Marie Carriere
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Ni YL, Shen HT, Lee MW, Yeh KL, Chiang CY, Kuan YH. Safrole-induced expression of proinflammatory responses is associated with phosphorylation of mitogen-activated protein kinase family and the nuclear factor-κB/inhibitor of κB pathway in macrophages. Tzu Chi Med J 2020; 32:344-350. [PMID: 33163379 PMCID: PMC7605287 DOI: 10.4103/tcmj.tcmj_78_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/20/2020] [Accepted: 06/06/2020] [Indexed: 02/07/2023] Open
Abstract
Objective: Safrole, also called shikimol and Sassafras, is the carcinogenic and phenylpropanoid compound extracted from Sassafras tree and anise, betel, and camphor. Moreover, a high concentration of safrole can be occur in the saliva because of betel nut or areca quid chewing which a common habit observed in Southern and Southeastern Asia. Notably, macrophages are crucial phagocytic cells of the immune system. Nonetheless, to date, no evidence has been reported regarding safrole-induced proinflammatory response and the corresponding mechanism in macrophages. Materials and Methods: In the present study, the cytokines expression, NO generation, protein phosphorylation, and expression were assessed by enzyme-linked immunosorbent assay, Griess reagent, and Western blot assay, respectively. Results: In this study, we determined that safrole induces the generation of nitric oxide and proinflammatory cytokines, including tumor necrosis factor-α, interleukin-1β, and IL-6 in RAW264.7 macrophages in a concentration-dependent manner. Furthermore, inhibitor of κB (IκB) degradation was caused by safrole in a concentration-dependent manner. In addition, the phosphorylation of nuclear factor (NF)-κB and mitogen-activated protein kinase (MAPK) family, including p38 MAPK, extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase, was induced by safrole began to increase at 10 μM and attained a plateau at 100 μM. Conclusion: These results indicated that safrole induces the expression of proinflammatory responses in macrophages through the NF-κB/IκB pathway and its upstream factor, MAPK family phosphorylation.
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Affiliation(s)
- Yung-Lun Ni
- Department of Pulmonary Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Hospital, Taichung, Taiwan
| | - Huan-Ting Shen
- Department of Pulmonary Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Hospital, Taichung, Taiwan.,Institute of Biochemistry, Microbiology, and Immunology, Chung Shan Medical University, Taichung, Taiwan
| | - Min-Wei Lee
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
| | - Kun-Lin Yeh
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chen-Yu Chiang
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Hsiang Kuan
- Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, Taiwan.,Department of Pharmacology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
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Toxic Effects of Urethane Dimethacrylate on Macrophages Through Caspase Activation, Mitochondrial Dysfunction, and Reactive Oxygen Species Generation. Polymers (Basel) 2020; 12:polym12061398. [PMID: 32580382 PMCID: PMC7361960 DOI: 10.3390/polym12061398] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/14/2020] [Accepted: 06/18/2020] [Indexed: 01/12/2023] Open
Abstract
Urethane dimethacrylate (UDMA) is a dimethacrylate-based resin monomer that can react with other related monomers and inorganic particles, causing hydrophobic polymerization through cross-linking upon light activation. UDMA polymers are commonly used for the reconstruction and reinforcement of teeth and bones. UDMA can become unbound and be released from light-cured polymer resins. Thus far, no evidence exists on the toxic effects of UDMA and its related working mechanisms for macrophages. Therefore, in the present study, we investigated the cytotoxicity, mode of cell death, DNA damage, caspase activities, mitochondrial dysfunction, and reactive oxygen species (ROS) generation in RAW264.7 macrophages treated with UDMA using the lactate dehydrogenase (LDH) assay kit, Annexin V-FITC and PI assays, micronucleus formation and comet assay, caspase fluorometric assay, JC-1 assay, and 2ʹ,7ʹ-dichlorofluorescin diacetate (DCFH-DA) assay, respectively. Our results show that UDMA induced cytotoxicity; apoptosis and necrosis; genotoxicity, which is also called DNA damage; increased caspase-3, -8, and -9 activities; mitochondrial dysfunction; and intracellular ROS generation in a concentration-dependent manner in RAW264.7 macrophages. Thus, based on the observed inhibited concentration parallel trends, we concluded that UDMA induces toxic effects in macrophages. Furthermore, UDMA-induced intracellular ROS generation, cytotoxicity, and DNA damage were reduced by N-acetyl-L-cysteine.
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