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Role of FOXO3a Transcription Factor in the Regulation of Liver Oxidative Injury. Antioxidants (Basel) 2022; 11:antiox11122478. [PMID: 36552685 PMCID: PMC9774119 DOI: 10.3390/antiox11122478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Oxidative stress has been identified as a key mechanism in liver damage caused by various chemicals. The transcription factor FOXO3a has emerged as a critical regulator of redox imbalance. Multiple post-translational changes and epigenetic processes closely regulate the activity of FOXO3a, resulting in synergistic or competing impacts on its subcellular localization, stability, protein-protein interactions, DNA binding affinity, and transcriptional programs. Depending on the chemical nature and subcellular context, the oxidative-stress-mediated activation of FOXO3a can induce multiple transcriptional programs that play crucial roles in oxidative injury to the liver by chemicals. Here, we mainly review the role of FOXO3a in coordinating programs of genes that are essential for cellular homeostasis, with an emphasis on exploring the regulatory mechanisms and potential application of FOXO3a as a therapeutic target to prevent and treat liver oxidative injury.
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Zhang L, Ji X, Ding F, Wu X, Tang N, Wu Q. Apoptosis and blood-testis barrier disruption during male reproductive dysfunction induced by PAHs of different molecular weights. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 300:118959. [PMID: 35134430 DOI: 10.1016/j.envpol.2022.118959] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 01/14/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
The association between polycyclic aromatic hydrocarbons (PAHs) and male reproductive dysfunction has attracted increasing attention. The purpose of this study was to compare the male reproductive toxicity of multiple PAHs and to investigate the underlying molecular mechanisms. TM4 cells (mouse testicular Sertoli cells, SCs) were treated with benzo(a)pyrene (BaP), pyrene (Py), fluoranthene (Fl) and phenanthrene (Phe) (0, 0.1, 1, 10, 50, or 100 μM) for varying time points (4, 12, 24, or 48 h), and male C57BL/6 mice were administered BaP and Py (0, 10, 50, or 100 mg/kg body weight) for 14 days based on the cell experimental results. Histopathological examination, western blotting, ELISA, biochemical assays, RT-PCR, flow cytometry, JC-1 staining and trans-epithelium electrical resistance (TEER) measurements were used to assess apoptosis, blood-testis barrier (BTB) integrity, intracellular calcium ([Ca2+]i) concentrations and oxidative stress (OS). The results revealed that the mRNA levels and enzymatic activities of CYP450 and GST family members; levels of ROS, MDA, cleaved caspase 3 (c-caspase 3), caspase 9, Bax, and cytochrome C (CytC); and numbers of TUNEL-positive cells were significantly increased by BaP and Py, while levels of AhR, GSH, SOD, CAT, Bcl-2 and ΔΨm were decreased. Additionally, BaP and Py notably interfered with tight junctions (TJs) and adherens junctions (AJs) in the BTB. Intriguingly, BaP, but not Py, induced [Ca2+]i overload and gap junction (GJ) destruction. There was no dramatic effect of Fl and/or Phe on any of the above parameters except that slight cytotoxicity was observed with higher doses of Fl. Collectively, these findings showed that BaP and Py elicited SC apoptosis and BTB disruption involving mitochondrial dysfunction and OS, but [Ca2+]i fluctuation and GJ injury were only observed with BaP-induced reproductive toxicity. The male reproductive toxicity of the selected PAHs was ranked in the order of BaP > Py > Fl > Phe.
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Affiliation(s)
- Lin Zhang
- Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200082, China; Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China
| | - Xiaoli Ji
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China; Department of Occupational Disease, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, China
| | - Fan Ding
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China
| | - Xuan Wu
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China
| | - Ning Tang
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan; Institute of Nature and Environmental Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Qing Wu
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai, 200030, China.
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Aluru N, Krick KS, McDonald AM, Karchner SI. Developmental Exposure to PCB153 (2,2',4,4',5,5'-Hexachlorobiphenyl) Alters Circadian Rhythms and the Expression of Clock and Metabolic Genes. Toxicol Sci 2021; 173:41-52. [PMID: 31621872 DOI: 10.1093/toxsci/kfz217] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Polychlorinated biphenyls (PCBs) are highly persistent and ubiquitously distributed environmental pollutants. Based on their chemical structure, PCBs are classified into non-ortho-substituted and ortho-substituted congeners. Non-ortho-substituted PCBs are structurally similar to dioxin and their toxic effects and mode of action are well-established. In contrast, very little is known about the effects of ortho-substituted PCBs, particularly, during early development. The objective of this study is to investigate the effects of exposure to an environmentally prominent ortho-substituted PCB (2,2',4,4',5,5'-hexachlorobiphenyl; PCB153) on zebrafish embryos. We exposed zebrafish embryos to 3 different concentrations of PCB153 starting from 4 to 120 hours post-fertilization (hpf). We quantified gross morphological changes, behavioral phenotypes, gene expression changes, and circadian behavior in the larvae. There were no developmental defects during the exposure period, but starting at 7 dpf, we observed spinal deformity in the 10 μM PCB153 treated group. A total of 633, 2227, and 3378 differentially expressed genes were observed in 0.1 μM (0.036 μg/ml), 1 μM (0.36 μg/ml), and 10 μM (3.6 μg/ml) PCB153-treated embryos, respectively. Of these, 301 genes were common to all treatment groups. KEGG pathway analysis revealed enrichment of genes related to circadian rhythm, FoxO signaling, and insulin resistance pathways. Behavioral analysis revealed that PCB153 exposure significantly alters circadian behavior. Disruption of circadian rhythms has been associated with the development of metabolic and neurological diseases. Thus, understanding the mechanisms of action of environmental chemicals in disrupting metabolism and other physiological processes is essential.
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Affiliation(s)
- Neelakanteswar Aluru
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543
| | - Keegan S Krick
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543
| | - Adriane M McDonald
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543.,Biology Department, Spelman College, Atlanta, Georgia 30314
| | - Sibel I Karchner
- Biology Department, Woods Hole Center for Oceans and Human Health, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543
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Urbani C, Mattiello A, Ferri G, Raggi F, Russo D, Marconcini G, Cappellani D, Manetti L, Marcocci C, Cardarelli F, Bogazzi F. PCB153 reduces apoptosis in primary cultures of murine pituitary cells through the activation of NF-κB mediated by PI3K/Akt. Mol Cell Endocrinol 2021; 520:111090. [PMID: 33242503 DOI: 10.1016/j.mce.2020.111090] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/02/2020] [Accepted: 11/17/2020] [Indexed: 12/11/2022]
Abstract
Polychlorinated biphenyls (PCBs) are persistent pollutants involved in human tumorigenesis. PCB153 is a ubiquitous non-dioxin-like PCB with proliferative and anti-apoptotic effects. To explore the impact of PCB153 in the survival of pituitary cells, we exposed murine pituitary primary cells to PCB153 10 μM for 24 h. Apoptosis was assessed by RT-qPCR, Western-blot, immunoprecipitation, caspase activity, and immunofluorescence. We found that PCB153 decreased pituitary apoptosis through both the extrinsic and intrinsic pathways. PCB153 reduced the level of the pro-apoptotic protein p38-MAPK. Otherwise, PCB153 activated PI3K/Akt and Erk1/2 pathways and enhanced the expression and nuclear translocation of NF-κB. Cotreatments with specific inhibitors revealed that only PI3K/Akt changed the caspase-3 expression and NF-κB activation induced by PCB153. Also, PCB153 decreased the expression of the pro-apoptotic and pro-senescent cyclins p53 and p21. In summary, exposure to PCB153 leads to a downregulation of apoptosis in the pituitary driven by a PI3K/Akt-mediated activation of NF-κB.
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Affiliation(s)
- Claudio Urbani
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Alessandro Mattiello
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Gianmarco Ferri
- NEST Laboratory, Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - Francesco Raggi
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Dania Russo
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Giulia Marconcini
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Daniele Cappellani
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Luca Manetti
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Claudio Marcocci
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy
| | - Francesco Cardarelli
- NEST Laboratory, Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - Fausto Bogazzi
- Department of Clinical and Experimental Medicine, University of Pisa, via Savi, 10, 56126, Pisa, Italy.
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Wei J, Liu J, Zhang L, Zhu Y, Li X, Zhou G, Zhao Y, Sun Z, Zhou X. Endosulfan induces cardiotoxicity through apoptosis via unbalance of pro-survival and mitochondrial-mediated apoptotic pathways. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 727:138790. [PMID: 32344260 DOI: 10.1016/j.scitotenv.2020.138790] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/31/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
Although the associations between endosulfan and adverse cardiovascular health have been reported, the toxic effects and underlying mechanism of endosulfan on the heart are not well understood. In this study, we examined the cardiotoxicity induced by endosulfan using Wistar rats and human cardiomyocytes (AC16) cells. Wistar rats were divided into control group (received corn oil alone) and three concentrations of endosulfan groups (1, 5 and 10 mg/kg·bw) by gavage. The AC16 cells were treated with three various concentrations (0, 1.25, 5, and 20 μg/mL) of endosulfan. The results showed that endosulfan induced cytotoxicity through damaging myocardial structure, decreasing the viability of cardiomyocytes, and elevating the serum levels of cardiac troponin I, heart fatty acid binding protein, aspartate aminotransferase, and reactive oxygen species (p < 0.05). Moreover, measurement of mitochondrial function showed that endosulfan could significantly decrease adenosine triphosphate levels and cytochrome c oxidase IV expression in AC16 cells (p < 0.05). In addition, endosulfan obviously inhibited Bcl-2 expression, activated the expressions of cytochrome c/Caspase-9/Caspase-3 signaling pathway, and induced the apoptosis of AC16 cells (p < 0.05). Furthermore, endosulfan significantly increased the expression of Bim, and inhibited the expressions of PI3K/Akt/FoxO3a signaling pathways in cardiomyocytes (p < 0.05). These results suggest that endosulfan may induce cardiotoxicity by inducing myocardial apoptosis resulting from activation of mitochondria-mediated apoptosis pathway and inhibition of pro-survival signaling pathways, which might be helpful in elucidating the mechanism of cardiac dysfunction induced by endosulfan.
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Affiliation(s)
- Jialiu Wei
- Key Laboratory of Cardiovascular Epidemiology & Department of Epidemiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China
| | - Jianhui Liu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Lianshuang Zhang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Yupeng Zhu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Xiangyang Li
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Guiqing Zhou
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Yanzhi Zhao
- Yanjing Medical College, Capital Medical University, Beijing, China.
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China
| | - Xianqing Zhou
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, China.
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Dietary luteolin attenuates chronic liver injury induced by mercuric chloride via the Nrf2/NF-κB/P53 signaling pathway in rats. Oncotarget 2018; 8:40982-40993. [PMID: 28498799 PMCID: PMC5522226 DOI: 10.18632/oncotarget.17334] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 04/11/2017] [Indexed: 11/25/2022] Open
Abstract
Mercury exposure is a common cause of metal poisoning which is biotransformed to highly toxic metabolites thus eliciting biochemical alterations and oxidative stress. Luteolin, a phenolic compound found in many natural products, has multiple biological functions. Our study was aimed to explore the biological effects of luteolin in a liver injury model induced in rats by mercuric chloride (HgCl2). Criteria for injury included liver enzyme, glutathione and malondialdehyde levels, histopathology, TUNEL assay, hepatocyte viability and reactive oxygen species levels. The results showed that luteolin protected against HgCl2-induced liver injury. Luteolin increased total nuclear factor-erythroid-2-related factor 2 (Nrf2) levels in the presence of HgCl2. Upregulation of its downstream factors, heme oxygenase-1 and NAD(P)H quinone oxidoreductase 1, was also observed. This suggested that protection by luteolin against HgCl2-induced liver injury involved Nrf2 pathway activation. Luteolin also decreased expression of nuclear factor-κB (NF-κB) and P53. HgCl2 exposure led to increased Bcl-associated X protein (Bax), and decreased Bcl-2-related protein long form of Bcl-x (Bcl-xL) and B-cell leukemia/lymphoma-2 (Bcl-2) expression, leading to an increased Bax/Bcl-2 ratio. Taken together, our data suggested that decreasing oxidative stress is a protective mechanism of luteolin against development of HgCl2-induced liver injury, through the Nrf2/NF-κB/P53 signaling pathway in rats.
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7
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Das DN, Panda PK, Naik PP, Mukhopadhyay S, Sinha N, Bhutia SK. Phytotherapeutic approach: a new hope for polycyclic aromatic hydrocarbons induced cellular disorders, autophagic and apoptotic cell death. Toxicol Mech Methods 2017; 27:1-17. [PMID: 27919191 DOI: 10.1080/15376516.2016.1268228] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) comprise the major class of cancer-causing chemicals and are ranked ninth among the chemical compounds threatening to humans. Moreover, interest in PAHs has been mainly due to their genotoxic, teratogenic, mutagenic and carcinogenic property. Polymorphism in cytochrome P450 (CYP450) and aryl hydrocarbon receptor (AhR) has the capacity to convert procarcinogens into carcinogens, which is an imperative factor contributing to individual susceptibility to cancer development. The carcinogenicity potential of PAHs is related to their ability to bind to DNA, thereby enhances DNA cross-linking, causing a series of disruptive effects which can result in tumor initiation. They induce cellular toxicity by regulating the generation of reactive oxygen species (ROS), which arbitrate apoptosis. Additionally, cellular toxicity-mediated apoptotic and autophagic cell death and immune suppression by industrial pollutants PAH, provide fertile ground for the proliferation of mutated cells, which results in cancer growth and progression. PAHs play a foremost role in angiogenesis necessary for tumor metastasization by promoting the upregulation of metalloproteinase-9 (MMP-9), vascular endothelial growth factor (VEGF) and hypoxia inducible factor (HIF) in human cancer cells. This review sheds light on the molecular mechanisms of PAHs induced cancer development as well as autophagic and apoptotic cell death. Besides that authors have unraveled how phytotherapeutics is an alternate potential therapeutics acting as a savior from the toxic effects of PAHs for safer and cost effective perspectives.
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Affiliation(s)
- Durgesh Nandini Das
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
| | | | - Prajna Paramita Naik
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
| | | | - Niharika Sinha
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
| | - Sujit K Bhutia
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
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8
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Arrebola JP, Fernández-Rodríguez M, Artacho-Cordón F, Garde C, Perez-Carrascosa F, Linares I, Tovar I, González-Alzaga B, Expósito J, Torne P, Fernández MF, Olea N. Associations of persistent organic pollutants in serum and adipose tissue with breast cancer prognostic markers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 566-567:41-49. [PMID: 27213669 DOI: 10.1016/j.scitotenv.2016.04.188] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 04/15/2016] [Accepted: 04/28/2016] [Indexed: 05/20/2023]
Abstract
This study aimed to evaluate associations between exposure to a group of persistent organic pollutants, measured in both adipose tissue and serum samples from breast cancer patients, and a set of tumor prognostic markers. The study population comprised 103 breast cancer patients recruited in Granada, Southern Spain. Data for tumor prognostic markers were retrieved from hospital clinical records and socio-demographic information was gathered by questionnaire. Persistent organic pollutants were quantified by gas chromatography with electron capture detection. Exposure levels were categorized in quartiles, and associations were evaluated using unconditional logistic regression. Adipose tissue HCB concentrations were associated positively with ER and PR expression (p-trends=0.044 and 0.005, respectively) and negatively with E-Cadherin and p53 expression (p-trends=0.012 and 0.027, respectively). PCB-180 adipose tissue concentrations were positively associated with HER2 expression (p-trend=0.036). Serum PCB-138 concentrations were positively associated with ER and PR expression (p-trends=0.052 and 0.042, respectively). The risk of p53 expression was higher among women in the lowest quartile of serum PCB-138 concentrations, but no significant trend was observed (p-trend=0.161). These findings indicate that human exposure to certain persistent organic pollutants might be related to breast cancer aggressiveness. We also highlight the influence on exposure assessment of the biological matrix selected, given that both serum and adipose tissue might yield relevant information on breast cancer prognosis.
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Affiliation(s)
- J P Arrebola
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; Virgen de las Nieves University Hospital, Radiation Oncology Department, Oncology Unit, Granada, Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Spain.
| | - M Fernández-Rodríguez
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; University of Granada, Radiology and Physical Medicine Department, Spain
| | - F Artacho-Cordón
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; University of Granada, Radiology and Physical Medicine Department, Spain
| | - C Garde
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain
| | - F Perez-Carrascosa
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; Virgen de las Nieves University Hospital, Radiation Oncology Department, Oncology Unit, Granada, Spain
| | - I Linares
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; Virgen de las Nieves University Hospital, Radiation Oncology Department, Oncology Unit, Granada, Spain
| | - I Tovar
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; Virgen de las Nieves University Hospital, Radiation Oncology Department, Oncology Unit, Granada, Spain
| | - B González-Alzaga
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; Escuela Andaluza de Salud Pública, Granada, Spain
| | - J Expósito
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; Virgen de las Nieves University Hospital, Radiation Oncology Department, Oncology Unit, Granada, Spain
| | - P Torne
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain
| | - M F Fernández
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Spain; University of Granada, Radiology and Physical Medicine Department, Spain
| | - N Olea
- Instituto de Investigación Biosanitaria (ibs. GRANADA), Hospitales Universitarios de Granada, Spain; CIBER en Epidemiología y Salud Pública (CIBERESP), Spain; University of Granada, Radiology and Physical Medicine Department, Spain
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Zhang Y, Dong S, Wang H, Tao S, Kiyama R. Biological impact of environmental polycyclic aromatic hydrocarbons (ePAHs) as endocrine disruptors. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 213:809-824. [PMID: 27038213 DOI: 10.1016/j.envpol.2016.03.050] [Citation(s) in RCA: 183] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 03/03/2016] [Accepted: 03/20/2016] [Indexed: 05/20/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are often detected in the environment and are regarded as endocrine disruptors. We here designated mixtures of PAHs in the environment as environmental PAHs (ePAHs) to discuss their effects collectively, which could be different from the sum of the constituent PAHs. We first summarized the biological impact of environmental PAHs (ePAHs) found in the atmosphere, sediments, soils, and water as a result of human activities, accidents, or natural phenomena. ePAHs are characterized by their sources and forms, followed by their biological effects and social impact, and bioassays that are used to investigate their biological effects. The findings of the bioassays have demonstrated that ePAHs have the ability to affect the endocrine systems of humans and animals. The pathways that mediate cell signaling for the endocrine disruptions induced by ePAHs and PAHs have also been summarized in order to obtain a clearer understanding of the mechanisms responsible for these effects without animal tests; they include specific signaling pathways (MAPK and other signaling pathways), regulatory mechanisms (chromatin/epigenetic regulation, cell cycle/DNA damage control, and cytoskeletal/adhesion regulation), and cell functions (apoptosis, autophagy, immune responses/inflammation, neurological responses, and development/differentiation) induced by specific PAHs, such as benz[a]anthracene, benzo[a]pyrene, benz[l]aceanthrylene, cyclopenta[c,d]pyrene, 7,12-dimethylbenz[a]anthracene, fluoranthene, fluorene, 3-methylcholanthrene, perylene, phenanthrene, and pyrene as well as their derivatives. Estrogen signaling is one of the most studied pathways associated with the endocrine-disrupting activities of PAHs, and involves estrogen receptors and aryl hydrocarbon receptors. However, some of the actions of PAHs are contradictory, complex, and unexplainable. Although several possibilities have been suggested, such as direct interactions between PAHs and receptors and the suppression of their activities through other pathways, the mechanisms underlying the activities of PAHs remain unclear. Thus, standardized assay protocols for pathway-based assessments are considered to be important to overcome these issues.
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Affiliation(s)
- Yanyan Zhang
- College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Sijun Dong
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Hongou Wang
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Shu Tao
- College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Ryoiti Kiyama
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan.
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Biotin-mediated epigenetic modifications: Potential defense against the carcinogenicity of benzo[a]pyrene. Toxicol Lett 2016; 241:216-24. [DOI: 10.1016/j.toxlet.2015.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/03/2015] [Accepted: 11/08/2015] [Indexed: 12/16/2022]
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11
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Qin G, Wu M, Sang N. Sulfur dioxide and benzo(a)pyrene trigger apoptotic and anti-apoptotic signals at different post-exposure times in mouse liver. CHEMOSPHERE 2015; 139:318-325. [PMID: 26162325 DOI: 10.1016/j.chemosphere.2015.06.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/18/2015] [Accepted: 06/21/2015] [Indexed: 06/04/2023]
Abstract
There is considerable concern that exposure to PAHs in combination with other air pollutants may lead to cancer or apoptosis in different cells. This study investigated the interaction effects between SO2 and BaP in mouse liver after long-term exposure. Mice were exposed to BaP for 5days or SO2 inhalation for 4weeks alone or together. The mitochondrial membrane potential (MMP) was assessed using the lipophilic cationic probe JC-1. The mRNA and protein level of several mitochondrial respiratory complex subunits and apoptosis-related genes were analyzed by real-time RT-PCR and/or western blot, respectively. We observed the pathology change of the mouse liver after 4-week treatments. It was revealed that MMP was reduced after co-exposure of SO2 and BaP after a 4-week treatment (1day post-exposure, p.e. 1d), with the suppression of the mRNA expression of complexes IV and V subunits, CO1, CO4, and ATP6. Co-exposure of SO2 and BaP appeared to be able to cause apoptotic signals, as judged by the suppression of bcl-2 and the bcl-2/bax ratio and the elevation of bax, caspase 3 activation, p53 accumulation and phosphorylation 1d post-exposure to SO2 and BaP, while the anti-apoptotic signal was detected by the elevation of bcl-2 and the bcl-2/bax ratio as well as the suppression of bax and p53 expression after a 13-week post-exposure (p.e. 13w) of SO2 and BaP. These results indicate that co-exposure to SO2 and BaP appears to lead to apoptotic as well as anti-apoptotic signals at different post-exposure times.
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Affiliation(s)
- Guohua Qin
- College of Environment and Resource, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Meiqiong Wu
- College of Environment and Resource, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Nan Sang
- College of Environment and Resource, Shanxi University, Taiyuan, Shanxi 030006, China.
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Niu M, Xu X, Shen Y, Yao Y, Qiao J, Zhu F, Zeng L, Liu X, Xu K. Piperlongumine is a novel nuclear export inhibitor with potent anticancer activity. Chem Biol Interact 2015; 237:66-72. [PMID: 26026911 DOI: 10.1016/j.cbi.2015.05.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/14/2015] [Accepted: 05/21/2015] [Indexed: 11/26/2022]
Abstract
Piperlongumine is a natural compound recently identified to be toxic selectively to tumor cells in vitro and in vivo. However, the molecular mechanism underlying its anti-tumor action still remains unclear. In this report, we describe another novel mechanism by which piperlongumine mediates its anti-tumor effects. We found that piperlongumine is a novel nuclear export inhibitor. Piperlongumine could induce nuclear retention of tumor suppressor proteins and inhibit the interactions between CRM1 and these proteins. Piperlongumine could directly bind to the conserved Cys528 of CRM1 but not to a Cys528 mutant peptide. More importantly, cancer cells expressing mutant CRM1 (C528S) are resistant to piperlongumine, demonstrating the nuclear export inhibition via direct interaction with Cys528 of CRM1. The inhibition of nuclear export by piperlongumine may account for its therapeutic properties in cancer diseases. Our findings provide a good starting point for development of novel CRM1 inhibitors.
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Affiliation(s)
- Mingshan Niu
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China; Department of Hematology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Xiaoyu Xu
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Yangling Shen
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Yao Yao
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China; Department of Hematology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Jianlin Qiao
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China; Department of Hematology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Feng Zhu
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Lingyu Zeng
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China; Department of Hematology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Xuejiao Liu
- Institute of Nervous System Diseases, Xuzhou Medical College, Xuzhou, Jiangsu, China.
| | - Kailin Xu
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China; Jiangsu Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical College, Xuzhou, Jiangsu, China; Department of Hematology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China.
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13
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Elnar AA, Desor F, Marin F, Soulimani R, Nemos C. Lactational exposure to low levels of the six indicator non-dioxin-like polychlorinated biphenyls induces DNA damage and repression of neuronal activity, in juvenile male mice. Toxicology 2014; 328:57-65. [PMID: 25510870 DOI: 10.1016/j.tox.2014.12.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 12/09/2014] [Accepted: 12/10/2014] [Indexed: 10/24/2022]
Abstract
Previously, we evaluated the effects of lactational exposure to a representative mixture of the six indicator non-dioxin-like polychlorinated biphenyls (∑6 NDL-PCBs) at low levels on the neurobiological changes and developmental/behavioral performances in mice. In this study, we analyzed the global gene expression profile in cerebellar neurons isolated from male mice presenting the most significant induction of anxiety-like behavior in our previous study (10 ng/kg ∑6 NDL-PCBs). Our results revealed changes in the expression of 16658 genes in the neurons of the exposed mice. Among these, 693 upregulated [fold change (FC)>2; p<0.05] and 665 downregulated (FC<2; p<0.05) genes were statistically linked to gene ontology terms (GO). Overexpressed genes belonged to GO terms involved with the cell cycle, DNA replication, cell cycle checkpoint, response to DNA damage stimulus, regulation of RNA biosynthetic processes, and microtubule cytoskeleton organization. Downregulated genes belonged to terms involved with the transmission of nerve impulses, projection neurons, synapse hands, cell junctions, and regulation of RNA biosynthetic processes. Using qPCR, we quantified gene expression related to DNA damage and validated the transcriptomic study, as a significant overexpression of Atm-Atr Bard1, Brca2, Fancd2, Figf, Mycn, p53 and Rad51 was observed between groups (p<0.001). Finally, using immunoblots we determined the expression level of six selected proteins. We found that changes in the protein expression of Atm Brca1, p53, Kcnma1, Npy4r and Scn1a was significant between exposed and control groups (p<0.05), indicating that the expression pattern of these proteins agreed with the expression pattern of their genes by qPCR, further validating our transcriptomic findings. In conclusion, our study showed that early life exposure of male mice to a low level of ∑6 NDL-PCBs induced p53-dependent responses to cellular stress and a decrease in the expression of proteins involved in the generation, conduction, and transmission of electrical signals in neurons.
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Affiliation(s)
- Arpiné Ardzivian Elnar
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, MRCA/UR AFPA/INRA, BP 4102, 57040 Metz, France.
| | - Frédéric Desor
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, MRCA/UR AFPA/INRA, BP 4102, 57040 Metz, France
| | - Fabian Marin
- Université de Lorraine, UMR INSERM-954 Nutrition - Génétique et exposition aux risques environnementaux, Faculté de médecine de Nancy, 54511 Vandœuvre-Lès-Nancy, France
| | - Rachid Soulimani
- Université de Lorraine, Neurotoxicologie Alimentaire et Bioactivité, MRCA/UR AFPA/INRA, BP 4102, 57040 Metz, France
| | - Christophe Nemos
- Université de Lorraine, UMR INSERM-954 Nutrition - Génétique et exposition aux risques environnementaux, Faculté de médecine de Nancy, 54511 Vandœuvre-Lès-Nancy, France; CHU de Nancy, Unité de foetoplacentologie, Maternité régionale Universitaire, 54000 Nancy, France
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