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Talari K, Ganji SK, Tiruveedula RR. Gas chromatography-mass spectrometric determination of bisphenol residues by dispersive solid phase extraction followed by activated carbon spheres cleanup from fish feed samples. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2023:14690667231174446. [PMID: 37186780 DOI: 10.1177/14690667231174446] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Bisphenols are known endocrine disruptors commonly utilized in food packaging and storage materials, which frequently come into touch with multiple food products packed in them. The bisphenols in fish feed and other feed materials for aquatic organisms are harmful. The consumption of such marine foods is hazardous. Hence, the feed of aquatic products needs to be verified for the presence of bisphenols. The present study was focused on developing and validating a rapid, selective, and sensitive method to quantify 11 bisphenols from the fish feed with dispersive solid-phase extraction, which was cleaned by an optimized amount of activated carbon spheres and silylated by N,O-bis(trimethylsilyl)trifluoro acetamide and analyzed by gas chromatography-mass spectrometry. The new method was rigorously tested and verified after carefully tuning various parameters affecting analyte recovery. Limit of detection (LOD) were set at 0.5-5 ng/g and limit of quantification (LOQ) at 1-10 ng/g, respectively, resulting in 95-114% recoveries. Interday and intraday precisions in terms of relative standard deviation were found to be less than 11%. The proposed approach was effectively applied in floating and sinking fish feeds. The obtained results showed that higher concentration of bisphenol A, followed by bisphenol TMC, and bisphenol M at a concentration of 256.10, 159.01, and 168.82 ng/g in floating feed and 88.04, 200.79, and 98.03 ng/g in sinking feed samples, respectively.
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Affiliation(s)
- Kalpana Talari
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhra Pradesh, India
- Department of Chemistry, Government College for Women (A), Guntur, Andhra Pradesh, India
| | - Sai Krishna Ganji
- Centre for Mass Spectrometry, Analytical and Structural Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
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2
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Alva-Gallegos R, Carazo A, Mladěnka P. Toxicity overview of endocrine disrupting chemicals interacting in vitro with the oestrogen receptor. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104089. [PMID: 36841273 DOI: 10.1016/j.etap.2023.104089] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
The oestrogen receptor (ER) from the nuclear receptor family is involved in different physiological processes, which can be affected by multiple xenobiotics. Some of these compounds, such as bisphenols, pesticides, and phthalates, are widespread as consequence of human activities and are commonly present also in human organism. Xenobiotics able to interact with ER and trigger a hormone-like response, are known as endocrine disruptors. In this review, we aim to summarize the available knowledge on products derived from human industrial activity and other xenobiotics reported to interact with ER. ER-disrupting chemicals behave differently towards oestrogen-dependent cell lines than endogenous oestradiol. In low concentrations, they stimulate proliferation, whereas at higher concentrations, are toxic to cells. In addition, most of the knowledge on the topic is based on individual compound testing, and only a few studies assess xenobiotic combinations, which better resemble real circumstances. Confirmation from in vivo models is lacking also.
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Affiliation(s)
- Raul Alva-Gallegos
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Alejandro Carazo
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic.
| | - Přemysl Mladěnka
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
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3
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Repeated exposure to 4-methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene (MBP) accelerates ligand-independent activation of estrogen receptors in long-term estradiol-deprived MCF-7 cells. Toxicol Lett 2023; 378:31-38. [PMID: 36863540 DOI: 10.1016/j.toxlet.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 02/16/2023] [Accepted: 02/26/2023] [Indexed: 03/02/2023]
Abstract
It was previously identified that there may be an active metabolite of bisphenol A (BPA), 4-methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene (MBP). An in vitro system was developed to detect MBP toxicity to the Michigan Cancer Foundation-7 (MCF-7) cells that had been repeatedly exposed to a low dose of the metabolite. MBP profoundly activated estrogen receptor (ER)-dependent transcription as a ligand, with an EC50 of 2.8 nM. Women are continuously exposed to numerous estrogenic environmental chemicals; but their susceptibility to these chemicals may be significantly altered after menopause. Long-term estrogen-deprived (LTED) cells, which display ligand-independent ER activation, are a postmenopausal breast cancer model derived from MCF-7 cells. In this study, we investigated the estrogenic effects of MBP on LTED cells in a repeated exposure in vitro model. The results suggest that i) nanomolar levels of MBP reciprocally disrupt the balanced expression of ERα and ERβ proteins, leading to the dominant expression of ERβ, ii) MBP stimulates ERs-mediated transcription without acting as an ERβ ligand, and iii) MBP utilizes mitogen-activated protein kinase and phosphatidylinositol-3 kinase signaling to evoke its estrogenic action. Moreover, the repeated exposure strategy was effective for detecting low-dose estrogenic-like effects caused by MBP in LTED cells.
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Anticancer or carcinogenic? The role of estrogen receptor β in breast cancer progression. Pharmacol Ther 2023; 242:108350. [PMID: 36690079 DOI: 10.1016/j.pharmthera.2023.108350] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/06/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023]
Abstract
Estrogen receptor β (ERβ) is closely related to breast cancer (BC) progression. Traditional concepts regard ERβ as a tumor suppressor. As studies show the carcinogenic effect of ERβ, some people have come to a new conclusion that ERβ serves as a tumor suppressor in estrogen receptor α (ERα)-positive breast cancer, while it is a carcinogen in ERα-negative breast cancer. However, we re-examine the role of ERβ and find this conclusion to be misleading based on the last decade's research. A large number of studies have shown that ERβ plays an anticancer role in both ERα-positive and ERα-negative breast cancers, and its carcinogenicity does not depend solely on the presence of ERα. Herein, we review the anticancer and oncogenic effects of ERβ on breast cancer progression in the past ten years, discuss the mechanism respectively, analyze the main reasons for the inconsistency and update ERβ selective ligand library. We believe a detailed and continuously updated review will help correct the one-sided understanding of ERβ, promoting ERβ-targeted breast cancer therapy.
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5
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Hirao-Suzuki M. Mechanisms of Cancer Malignancy Elicited by Environmental Chemicals: Analysis Focusing on Cadmium and Bisphenol A. YAKUGAKU ZASSHI 2022; 142:1161-1168. [DOI: 10.1248/yakushi.22-00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abo-Zaid OAR, Moawed FSM, Hassan HA, Moustafa EM. Bisphenol-A/Radiation mediated inflammatory response activates EGFR/KRAS/ERK1/2 signaling pathway leads to lung carcinogenesis incidence. Int J Immunopathol Pharmacol 2022; 36:3946320221092918. [PMID: 35410520 PMCID: PMC9009141 DOI: 10.1177/03946320221092918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Bisphenol (BPA) and ionizing radiation exposure (IR) are potent oxidants that
cause free radical induction, leading to signaling pathway activation that
alters cell growth. Due to the insufficient knowledge of the impact of BPA
and IR on the lungs, the current study determined the impact of BPA and IR
on the lung tissue of adult female Wistar rats. Methods Forty Wister female rats were used in this study and were randomly divided
into four groups. The rats received BPA (150 mg/kg body weight/day for
6 weeks) and were exposed to IR at 2 Gy/week up to 12 Gy for 6 weeks. Results It was found that BPA and IR possess a harmful effect on the lungs via
induction of oxidative stress, confirmed by increasing levels of
malondialdehyde (MDA), nitric oxide, myeloperoxidase (MPO), and lactate
dehydrogenase (LDH). Exposure to BPA and IR activates inflammatory cytokines
TNF-α, IL-6, IL-1β, growth factors such as TGF-β, and gastrin-releasing
peptides. BPA/IR exposures induced phosphorylated expression p-ERK1/2 and
p-MEK1/2 associated with triggering of the GPER/EGFR/KRAS signaling factors,
resulting in matrix metalloproteinase-2 and 9 overexpression and the
development of lung tumors. Our findings support the causal role of two
deleterious environmental pollutants BPA and IR, via the cytotoxicity in the
respiratory system in the form of severe lung damage resulting in cancerous
cells.
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Affiliation(s)
- Omayma AR Abo-Zaid
- Department of Biochemistry, Faculty
of Veterinary Medicine, Benha University, Benha, Egypt
| | - Fatma SM Moawed
- Department of Health radiation
research, National Center for Radiation
Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
- *Fatma SM Moawed, Department of Health
radiation research, National Center for Radiation Research and Technology,
Egyptian Atomic Energy Authority, 20ahmed Elzomer street-naser city, Cairo 4565,
Egypt.
| | - Hend A Hassan
- Department of Biochemistry, Faculty
of Veterinary Medicine, Benha University, Benha, Egypt
| | - Enas M Moustafa
- Department of Radiation Biology, National Center for Radiation
Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
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Hirao-Suzuki M. Estrogen Receptor β as a Possible Double-Edged Sword Molecule in Breast Cancer: A Mechanism of Alteration of Its Role by Exposure to Endocrine-Disrupting Chemicals. Biol Pharm Bull 2021; 44:1594-1597. [PMID: 34719637 DOI: 10.1248/bpb.b21-00468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Estrogen is essential for the growth and development of mammary glands and its signaling is associated with breast cancer growth. Estrogen can exert physiological actions via estrogen receptors α/β (ERα/β). There is experimental evidence suggesting that in ERα/β-positive breast cancer, ERα promotes tumor cell proliferation and ERβ inhibits ERα-mediated transcriptional activity, resulting in abrogation of cell growth. Therefore, ERβ is attracting attention as a potential tumor suppressor, and as a biomarker and therapeutic target in the ERα/β-positive breast cancer. Based on this information, we have hypothesized that some endocrine-disrupting chemicals (EDCs) that can perturb the balance between ERα and ERβ expression levels in breast cancer cells might have effects on the breast cancer proliferation (i.e., down-regulation of the α-type of ER). We have recently reported that 4-methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene (MBP), an active metabolite of bisphenol A, in ERα/β-positive human breast cancer significantly down-regulates ERα expression, yet stimulates cell proliferation through the activation of ERβ-mediated transcription. These results support our hypothesis by demonstrating that exposure to MBP altered the functional role of ERβ in breast cancer cells from suppressor to promoter. In contrast, some EDCs, such as Δ9-tetrahydrocannabinol and bisphenol AF, can exhibit anti-estrogenic effects through up-regulation of ERβ expression without affecting the ERα expression levels. However, there is no consensus on the correlation between ERβ expression levels and clinical prognosis, which might be due to differences in exposed chemicals. Therefore, elucidating the exposure effects of EDCs can reveal the reason for inconsistent functional role of ERβ in ERα/β-positive breast cancer.
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Affiliation(s)
- Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
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8
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Hirao-Suzuki M, Nagase K, Suemori T, Tsutsumi K, Shigemori E, Tanaka M, Takiguchi M, Sugihara N, Yoshihara S, Takeda S. 4-Methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene (MBP) Targets Estrogen Receptor β, to Evoke the Resistance of Human Breast Cancer MCF-7 Cells to G-1, an Agonist for G Protein-Coupled Estrogen Receptor 1. Biol Pharm Bull 2021; 44:1524-1529. [PMID: 34602561 DOI: 10.1248/bpb.b21-00417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bisphenol A (BPA) has been shown to induce the activation of nuclear estrogen receptor α/β (ERα/β) in both in vitro and in vivo settings. We originally obtained a 4-methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene (MBP), a possible active metabolite of BPA, strongly activating the ERs-mediated transcription in MCF-7 cells with an EC50 of 2.8 nM (i.e., BPA's EC50 = 519 nM). Environmental estrogens can also target G protein-coupled estrogen receptor 1 (GPER1), a membrane-type ER. However, the effects of BPA/MBP on GPER1, have not yet been fully resolved. In this study, we used MCF-7, a ERα/ERβ/GPER1-positive human breast cancer cell line, as a model to investigate the effects of the exposure to BPA or MBP. Our results revealed that at concentrations below 1 nM MBP, but not BPA, downregulates the expression of GPER1 mRNA via upregulated ERβ, and the MCF-7 cells pre-treated with MBP display resistance to GPER1 agonist G-1-mediated anti-proliferative effects. Because GPER1 can act as a tumor suppressor in several types of cancer including breast cancer, the importance of MBP-mediated decrease in GPER1 expression in breast cancer cells is discussed.
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Affiliation(s)
- Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Keita Nagase
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Tatsuya Suemori
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Kana Tsutsumi
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Egao Shigemori
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Michitaka Tanaka
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Masufumi Takiguchi
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Narumi Sugihara
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University
| | - Shin'ichi Yoshihara
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Shuso Takeda
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University
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9
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Popescu M, Feldman TB, Chitnis T. Interplay Between Endocrine Disruptors and Immunity: Implications for Diseases of Autoreactive Etiology. Front Pharmacol 2021; 12:626107. [PMID: 33833678 PMCID: PMC8021784 DOI: 10.3389/fphar.2021.626107] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/19/2021] [Indexed: 12/12/2022] Open
Abstract
The sex-bias of disease susceptibility has remained a puzzling aspect of several autoimmune conditions, including post-infection viral autoimmunity. In the last half of the twentieth century, the incidence rate of female-biased autoimmunity has steadily increased independent of medical advances. This has suggested a role for environmental factors, such as endocrine disrupting chemicals, which have been described to interfere with endocrine signaling. Endocrine involvement in the proper function of innate and adaptive immunity has also been defined, however, these two areas have rarely been reviewed in correlation. In addition, studies addressing the effects of endocrine disruptors have reported findings resulting from a broad range of exposure doses, schedules and models. This experimental heterogeneity adds confusion and may mislead the translation of findings to human health. Our work will normalize results across experiments and provide a necessary summary relevant to human exposure. Through a novel approach, we describe how different categories of ubiquitously used environmental endocrine disruptors interfere with immune relevant endocrine signaling and contribute to autoimmunity. We hope this review will guide identification of mechanisms and concentration-dependent EDC effects important not only for the sex-bias of autoimmunity, but also for other conditions of immune dysfunction, including post-infection autoreactivity such as may arise following severe acute respiratory syndrome coronavirus 2, Epstein-Barr virus, Herpes Simplex virus.
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Affiliation(s)
- Maria Popescu
- Harvard Medical School, Boston, MA, United States.,Brigham Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Boston, MA, United States.,Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Boston, MA, United States
| | - Talia B Feldman
- Brigham Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Boston, MA, United States.,Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Boston, MA, United States
| | - Tanuja Chitnis
- Harvard Medical School, Boston, MA, United States.,Brigham Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Boston, MA, United States.,Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Boston, MA, United States
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10
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Qiu W, Liu S, Chen H, Luo S, Xiong Y, Wang X, Xu B, Zheng C, Wang KJ. The comparative toxicities of BPA, BPB, BPS, BPF, and BPAF on the reproductive neuroendocrine system of zebrafish embryos and its mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124303. [PMID: 33121856 DOI: 10.1016/j.jhazmat.2020.124303] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/10/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
Bisphenol A (BPA) is a well-known endocrine disruptor that has elicited great concern because of its potential toxic effects in organisms. In this study, the effects of BPA and several BPA structural analogs, including BPB, BPS, BPF, and BPAF, on the reproductive neuroendocrine system were evaluated during zebrafish embryonic and larval development. Our results showed that the numbers of gonadotropin-releasing hormone 3 neurons in zebrafish embryos increased after 100 μg/L BPA analog treatment, and exposure to BPA or its analogs at 1 or 100 μg/L increased the expression of reproductive neuroendocrine-related genes and the levels of typical hormones such as LH, FSH, E2, and GH. Moreover, the effects were associated with increases in the activities of erα, erβ, and cyp19a genes. The respective estrogen receptors (ER) and aromatase (AROM) antagonists significantly attenuated the stimulation of lhβ, fshβ, LH, and FSH expression, thereby proving that BPA analogs affect the reproductive neuroendocrine system via ERs and AROM pathway. Furthermore, we observed that the reproductive neuroendocrine toxicity of BPAF was more similar to that of BPA. This was the first study to comparatively explore the reproductive neuroendocrine toxicities of bisphenols in aquatic organism.
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Affiliation(s)
- Wenhui Qiu
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, Southern University of Science and Technology, Guangdong Province, Shenzhen 518055, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China.
| | - Shuai Liu
- Research Institute of Poyang Lake, Jiangxi Academy of Sciences, Nanchang 330012, China.
| | - Honghong Chen
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Shusheng Luo
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Ying Xiong
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Xuejing Wang
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Bentuo Xu
- School of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
| | - Chunmiao Zheng
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Ke-Jian Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China.
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Tsen CM, Liu JH, Yang DP, Chao HR, Chen JL, Chou WC, Ho YC, Chuang CY. Study on the correlation of bisphenol A exposure, pro-inflammatory gene expression, and C-reactive protein with potential cardiovascular disease symptoms in young adults. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10.1007/s11356-021-12805-0. [PMID: 33625709 DOI: 10.1007/s11356-021-12805-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
Bisphenol A (BPA) is a plasticizer used in the manufacture of polycarbonate and epoxy resins. It was found that higher urinary BPA levels are more likely to be associated with coronary artery disease (CVD). In recent years, the increasing incidence of CVD among young people is observed, which may be related with inflammation rather than the traditional triple-H risk factors. BPA is an endocrine-disrupting chemical, and can induce oxidative stress and chronic inflammation since its estrogenic effect. Inflammatory responses could come from the stimulation of IκB kinases (IKKs) by estrogen receptors (ERs). Therefore, this study investigated the association of BPA exposure with the gene expression of pro-inflammatory response (ERs and IKKs), an inflammation biomarker of CVD (C-reactive protein, CRP), and physiologic index potency of CVD development symptoms in young adults. This study divided BPA exposure levels into high and low groups based on the median plasma BPA level (4.34 ng/mL), and found that the high BPA group obviously had higher BMI, blood pressure, plasma CRP levels, and gene expression of ERβ and IKKβ. BMI and gene expression of IKKβ were also positively correlated with plasma CRP secretion. Furthermore, the study subjects with potential CVD development symptoms had the increased levels of BPA (OR 2.10, 95% CI 0.83-5.39), CRP (OR 2.61, 95% CI 1.03-10.6) and IKKβ (OR 4.29, 95% CI 1.51-15.6). These results indicated that exposure to BPA is potentially associated with expression of pro-inflammatory genes related to CRP secretion, which may promote the risk of CVD development symptoms in young adults. This study highlighted the possible connection between BPA exposure and CVD development but the mechanism between them needs to be further explored.
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Affiliation(s)
- Chao-Ming Tsen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 101, Sec. 2 Kuang-Fu Road, Hsinchu, 300, Taiwan
- Residue Control Division, Agricultural Chemicals and Toxic Substances Research Institute, Council of Agriculture, Taichung, Taiwan
| | - Jia-Hong Liu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 101, Sec. 2 Kuang-Fu Road, Hsinchu, 300, Taiwan
| | - Da-Peng Yang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 101, Sec. 2 Kuang-Fu Road, Hsinchu, 300, Taiwan
| | - How-Ran Chao
- Emerging Compounds Research Center, Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, Pingtung County, Taiwan
| | - Jyh-Larng Chen
- Department of Environmental Engineering and Health, College of Health Science, Yuanpei University, Hsinchu, Taiwan
| | - Wei-Chun Chou
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 101, Sec. 2 Kuang-Fu Road, Hsinchu, 300, Taiwan
- Institute of Computational Comparative Medicine, Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, United States
| | - Yi-Chen Ho
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 101, Sec. 2 Kuang-Fu Road, Hsinchu, 300, Taiwan
- Service System Technology Center, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Chun-Yu Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 101, Sec. 2 Kuang-Fu Road, Hsinchu, 300, Taiwan.
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12
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Huang M, Li X, Jia S, Liu S, Fu L, Jiang X, Yang M. Bisphenol AF induces apoptosis via estrogen receptor beta (ERβ) and ROS-ASK1-JNK MAPK pathway in human granulosa cell line KGN. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 270:116051. [PMID: 33189448 DOI: 10.1016/j.envpol.2020.116051] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/14/2020] [Accepted: 11/06/2020] [Indexed: 06/11/2023]
Abstract
Bisphenol AF (BPAF) is an emerging environmental pollutant. Although BPAF is widely spread in the environment and human surroundings, its interference with ovarian function has not been fully elucidated. The aim of this study was to identify the mechanism underlying the effect of BPAF on the apoptosis of KGN cells, which maintain the physiological characteristics of ovarian granulosa cells. Our results indicated that BPAF induces KGN cell apoptosis in a concentration- and time-dependent manner. Meanwhile, BPAF exposure significantly promoted the expression of pro-apoptotic proteins, including Bax, Bid and Bak, while the expression of anti-apoptotic proteins, such as Bcl-2, Bcl-xL and Mcl-1, decreased significantly. We further detected a significant increase in intracellular ROS levels in response to high concentrations of BPAF exposure. After blocking the corresponding pathway, it was found that ROS mediates ASK1 and JNK activation. Furthermore, the role of Ca2+ overload and estrogen receptor β (ERβ) in BPAF-induced KGN cell apoptosis was also confirmed by using inhibitors. These results suggest that BPAF has potential reproductive toxicity for females, and ROS-ASK1-JNK axis may play a key role in BPAF-induced ovarian dysfunction. In addition, Ca2+ overload and ERβ pathway activation may also be an important mechanism of reproductive toxicity of BPAF.
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Affiliation(s)
- Mingquan Huang
- Inflammation & Allergic Diseases Research Unit, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China; Sichuan Treatment Center for Gynaecologic and Breast Diseases (Breast Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Xingjie Li
- Inflammation & Allergic Diseases Research Unit, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Shengjun Jia
- Animal Disease Prevention and Control Center of Zhongshan District, Liupanshui, 553000, China
| | - Shuang Liu
- Department of Reproductive Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Li Fu
- Department of Reproductive Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Xue Jiang
- Department of Reproductive Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Meng Yang
- Inflammation & Allergic Diseases Research Unit, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China; Department of Reproductive Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China.
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El Henafy HMA, Ibrahim MA, Abd El Aziz SA, Gouda EM. Oxidative Stress and DNA methylation in male rat pups provoked by the transplacental and translactational exposure to bisphenol A. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:4513-4519. [PMID: 31773524 DOI: 10.1007/s11356-019-06553-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
The epigenetic changes induced by environmental contaminants play important roles in the inheritance of male reproductive dysfunction. The present study investigated DNA methylation changes and some oxidative stress biomarkers induced by bisphenol A (BPA) in male offspring. A total number of 48 female albino rats were administered orally with 50 μg/kg of BPA/day during gestation and/or lactation periods. At postnatal day 60, the samples were collected from the male pups to assess the serum testosterone, malondialdehyde (MDA) level, superoxide dismutase (SOD), glutathione S-transferase, and glutathione peroxidase (GSH-Px) activities in testicular tissue. DNA methylation in both DNA (cytosine-5)-methyltransferase 3A and estrogen receptor alpha genes was detected by methylation-specific PCR. BPA exposure resulted in significant decrease in the anogenital distance, testis and epididymis weights, serum testosterone level, SOD, GST, and GSH-Px levels with significant increase in weaning body weight and the MDA level. Additionally, BPA caused marked hypermethylation within Dnmt3A and ER- ∝ genes promoter regions in the testis of rat male pups. Graphical abstract.
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Affiliation(s)
- Hanan M A El Henafy
- Medical Laboratory Department, Faculty of Applied Medical Sciences, October 6 University, Cairo, Egypt
| | - Marwa A Ibrahim
- Biochemistry and Chemistry of Nutrition Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Samy A Abd El Aziz
- Biochemistry and Chemistry of Nutrition Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Eman M Gouda
- Biochemistry and Chemistry of Nutrition Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Serra H, Beausoleil C, Habert R, Minier C, Picard-Hagen N, Michel C. Evidence for Bisphenol B Endocrine Properties: Scientific and Regulatory Perspectives. ENVIRONMENTAL HEALTH PERSPECTIVES 2019; 127:106001. [PMID: 31617754 PMCID: PMC6867436 DOI: 10.1289/ehp5200] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 08/30/2019] [Accepted: 09/04/2019] [Indexed: 05/21/2023]
Abstract
BACKGROUND The substitution of bisphenol A (BPA) by bisphenol B (BPB), a very close structural analog, stresses the need to assess its potential endocrine properties. OBJECTIVE This analysis aimed to investigate whether BPB has endocrine disruptive properties in humans and in wildlife as defined by the World Health Organization (WHO) definition used in the regulatory field, that is, a) adverse effects, b) endocrine activity, and c) plausible mechanistic links between the observed endocrine activity and adverse effects. METHODS We conducted a systematic review to identify BPB adverse effects and endocrine activities by focusing on animal models and in vitro mechanistic studies. The results were grouped by modality (estrogenic, androgenic, thyroid hormone, steroidogenesis-related, or other endocrine activities). After critical analysis of results, lines of evidence were built using a weight-of-evidence approach to establish a biologically plausible link. In addition, the ratio of BPA to BPB potency was reported from studies investigating both bisphenols. RESULTS Among the 36 articles included in the analysis, 3 subchronic studies consistently reported effects of BPB on reproductive function. In rats, the 28-d and 48-week studies showed alteration of spermatogenesis associated with a lower height of the seminiferous tubules, the alteration of several sperm parameters, and a weight loss for the testis, epididymis, and seminal vesicles. In zebrafish, the results of a 21-d reproductive study demonstrated that exposed fish had a lower egg production and a lower hatching rate and viability. The in vitro and in vivo mechanistic data consistently demonstrated BPB's capacity to decrease testosterone production and to exert an estrogenic-like activity similar to or greater than BPA's, both pathways being potentially responsible for spermatogenesis impairment in rats and fish. CONCLUSION The available in vivo, ex vivo, and in vitro data, although limited, coherently indicates that BPB meets the WHO definition of an endocrine disrupting chemical currently used in a regulatory context. https://doi.org/10.1289/EHP5200.
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Affiliation(s)
- Hélène Serra
- Chemical Substances Assessment Unit, Risk Assessment Department, French Agency for Food, Environmental and Occupational Health Safety (ANSES), Maisons-Alfort, France
| | - Claire Beausoleil
- Chemical Substances Assessment Unit, Risk Assessment Department, French Agency for Food, Environmental and Occupational Health Safety (ANSES), Maisons-Alfort, France
| | - René Habert
- Unit of Genetic Stability, Stem Cells and Radiation, Laboratory of Development of the Gonads, University Paris Diderot, Institut national de la santé et de la recherche médicale (Inserm) U 967 – CEA, Fontenay-aux-Roses, France
| | - Christophe Minier
- UMR I-2 Laboratoire Stress Environnementaux et BIOsurveillance des milieux aquatique (SEBIO), Normandie University, Le Havre, France
| | - Nicole Picard-Hagen
- Toxalim, Institut National de la Recherche Agronomique (INRA), Toulouse University, Ecole Nationale Vétérinaire de Toulouse (ENVT), Ecole d’Ingénieurs de Purpan (EIP), Université Paul Sabatier (UPS), Toulouse, France
| | - Cécile Michel
- Chemical Substances Assessment Unit, Risk Assessment Department, French Agency for Food, Environmental and Occupational Health Safety (ANSES), Maisons-Alfort, France
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15
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Wang L, Zhuang T, Li F, Wei W. Fluorene-9-bisphenol inhibits epithelial-mesenchymal transition of human endometrial cancer Ishikawa cells by repressing TGF-β signaling pathway. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:27407-27413. [PMID: 31327139 DOI: 10.1007/s11356-019-05184-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 04/15/2019] [Indexed: 06/10/2023]
Abstract
Fluorene-9-bisphenol (BHPF), a new derivative of bisphenol A (BPA), has been introduced for treatment with estrogen-related tumors, such as endometrial cancer. This study investigated the potential mechanism underlying the action of BHPF against endometrial cancer in vitro. We used the cell counting kit-8 (CCK8) method on Ishikawa cells to screen sub-lethal doses of BHPF and established the optimal concentration at which BHPF influenced the proliferation of Ishikawa cells. Effect of BHPF on cell migration and invasion was investigated by cell scratch assay and transwell assay, respectively. Expression levels of epithelial-mesenchymal transition (EMT)-related proteins were detected by Western blot analysis. BHPF was found to inhibit the proliferation of Ishikawa cells, whose migration and invasion abilities were also reduced. Western blot indicated that BHPF can significantly inhibit the EMT process of Ishikawa cells by blocking transforming growth factor-β (TGF-β) signaling pathway. This is the first report of the effect of BHPF on the biological behavior of endometrial cancer cells and its inhibition of endometrial cancer progression by repressing both endometrial cell proliferation and epithelial-mesenchymal transition, hence suggesting it as a novel anti-cancer drug. Graphical abstract Schematic representation of the molecular basis underlying BHPF treatment. BHPF repressed the EMT process by regulating EMT-related genes, such as E-cadherin, N-cadherin, and vimentin as well as the TGF-β signaling pathway-related genes, including p-Smad2/3 and slug, in a BHPF-dependent manner.
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Affiliation(s)
- Lingjuan Wang
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100050, China
| | - Taifeng Zhuang
- Department of Pediatrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100050, China
| | - Fangzhou Li
- Department of Urology, Ren Ji Hospital, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Wei Wei
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100050, China.
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16
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Zhao Q, Howard EW, Parris AB, Ma Z, Xing Y, Yang X. Bisphenol AF promotes estrogen receptor-positive breast cancer cell proliferation through amphiregulin-mediated crosstalk with receptor tyrosine kinase signaling. PLoS One 2019; 14:e0216469. [PMID: 31059536 PMCID: PMC6502342 DOI: 10.1371/journal.pone.0216469] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 04/23/2019] [Indexed: 11/18/2022] Open
Abstract
Exposure to bisphenol A (BPA), an endocrine-disrupting compound, is associated with increased risk of estrogen-related diseases, including estrogen receptor-positive (ER+) breast cancer. Although bisphenol analogs, i.e. bisphenol AF (BPAF), have replaced BPA in industrial settings, increasing data indicate that these alternatives may have similar or even more potent estrogenic effects. As such, BPAF exhibits increased ER binding affinities than BPA in biochemical assays. However, preclinical studies exploring the effects of BPAF on ER+ breast cancer are missing mechanistic data. Thus, we aimed to characterize the effects of BPAF on MCF-7 and T47D ER+ breast cancer cells with mechanistic insight. We found that BPAF promoted cell growth and cell cycle progression concurrently with BPAF-induced ERα transcriptional activity and ER-RTK signaling activation. ER signaling blockage revealed that BPAF-induced cell proliferation and ER-RTK crosstalk were ER-dependent. Gene expression data demonstrated that AREG is a sensitive target of BPAF in our in vitro models. Importantly, we determined that AREG upregulation is necessary for BPAF-induced cellular responses. Ultimately, our novel finding that AREG mediates BPAF-induced ER-RTK crosstalk in ER+ breast cancer cells supports future studies to characterize the impact of BPAF on human ER+ breast cancer risk and to assess the safety profile of BPAF.
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Affiliation(s)
- Qingxia Zhao
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, North Carolina Research Campus, Kannapolis, North Carolina, United States of America
| | - Erin W. Howard
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, North Carolina Research Campus, Kannapolis, North Carolina, United States of America
| | - Amanda B. Parris
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, North Carolina Research Campus, Kannapolis, North Carolina, United States of America
| | - Zhikun Ma
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, North Carolina Research Campus, Kannapolis, North Carolina, United States of America
| | - Ying Xing
- Basic Medical College of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Xiaohe Yang
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, North Carolina Research Campus, Kannapolis, North Carolina, United States of America
- * E-mail:
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Lei B, Sun S, Zhang X, Feng C, Xu J, Wen Y, Huang Y, Wu M, Yu Y. Bisphenol AF exerts estrogenic activity in MCF-7 cells through activation of Erk and PI3K/Akt signals via GPER signaling pathway. CHEMOSPHERE 2019; 220:362-370. [PMID: 30590302 DOI: 10.1016/j.chemosphere.2018.12.122] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 12/14/2018] [Accepted: 12/18/2018] [Indexed: 05/25/2023]
Abstract
The negative health effects of bisphenol A (BPA) due to its estrogenic activity result in the increasing usage of alternative bisphenols (BPs) including bisphenol AF (BPAF). To comprehensive understand health effects of BPAF, the MCF-7 cells were used to investigate the effects of BPAF on cell proliferation, intracellular reactive oxygen species (ROS) formation, and calcium ion (Ca2+) level. The molecular mechanisms of cell biological responses caused by BPAF were investigated by analyzing target protein expression. The results showed that low-concentration BPAF induces significant effects on MCF-7 cells, including promoting cell proliferation and elevating intracellular ROS and Ca2+ levels. BPAF in low concentration significantly enhances the protein expression of estrogen receptor α (ERα), G protein-coupled receptor (GPER), c-Myc, and Cyclin D1, as well as increases phosphorylation levels of protein kinase B (Akt) and extracellular signal-regulated kinase (Erk) in MCF-7 cells. After the addition of ERα, GPER, and phosphatidylinositide 3-kinase (PI3K) inhibitors, phosphorylations of Erk and Akt were both inhibited. In addition, specific signal inhibitors significantly attenuated the effects of BPAF. Silencing of GPER also markedly decreased BPAF induced cell proliferation. The present results suggested that BPAF can activate PI3K/Akt and Erk signals via GPER, which, in turn, stimulate cellular biological effects induced by BPAF. ERα also plays a critical role in BPAF induced cellular biological effects.
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Affiliation(s)
- Bingli Lei
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Su Sun
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Xiaolan Zhang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Chenglian Feng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environment Sciences, Beijing, 100012, PR China
| | - Jie Xu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Yu Wen
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Yangen Huang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, PR China
| | - Minghong Wu
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China
| | - Yingxin Yu
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
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18
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Curtis SW, Cobb DO, Kilaru V, Terrell ML, Kennedy EM, Marder ME, Barr DB, Marsit CJ, Marcus M, Conneely KN, Smith AK. Exposure to polybrominated biphenyl (PBB) associates with genome-wide DNA methylation differences in peripheral blood. Epigenetics 2019; 14:52-66. [PMID: 30676242 DOI: 10.1080/15592294.2019.1565590] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
In 1973, Michigan residents were exposed to polybrominated biphenyl (PBB) when it was accidentally added to farm animal feed. Highly exposed individuals and their children have experienced endocrine-related health problems, though the underlying mechanism behind these remains unknown. We investigated whether PBB exposure is associated with variation in DNA methylation in peripheral blood samples from 658 participants of the Michigan PBB registry using the MethylationEPIC BeadChip, as well as investigated what the potential function of the affected regions are and whether these epigenetic marks are known to associate with endocrine system pathways. After multiple test correction (FDR <0.05), 1890 CpG sites associated with total PBB levels. These CpGs were not enriched in any particular biological pathway, but were enriched in enhancer and insulator regions, and depleted in regions near the transcription start site or in CpG islands (p < 0.05). They were also more likely to be in ARNT and ESR2 transcription factor binding sites (p = 3.27e-23 and p = 1.62e-6, respectively), and there was significant overlap between CpGs associated with PBB and CpGs associated with estrogen (p < 2.2e-16). PBB-associated CpGs were also enriched for CpGs known to be associated with gene expression in blood (eQTMs) (p < 0.05). These eQTMs were enriched for pathways related to immune function and endocrine-related autoimmune disease (FDR <0.05). These results indicate that exposure to PBB is associated with differences in epigenetic marks that suggest that it is acting similarly to estrogen and is associated with dysregulated immune system pathways.
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Affiliation(s)
- Sarah W Curtis
- a Genetics and Molecular Biology Program, Laney Graduate SchoolLaney Graduate School , Emory University School of Medicine , Atlanta , GA , USA
| | - Dawayland O Cobb
- b Department of Gynecology and Obstetrics , Emory University School of Medicine , Atlanta , GA , USA
| | - Varun Kilaru
- b Department of Gynecology and Obstetrics , Emory University School of Medicine , Atlanta , GA , USA
| | - Metrecia L Terrell
- c Department of Epidemiology , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Elizabeth M Kennedy
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - M Elizabeth Marder
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Dana Boyd Barr
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Carmen J Marsit
- d Department of Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA
| | - Michele Marcus
- e Departments of Epidemiology, Environmental Health , Emory University Rollins School of Public Health , Atlanta , GA , USA.,f Department of Pediatrics , Emory University School of Medicine , Atlanta , GA , USA
| | - Karen N Conneely
- g Department of Human Genetics , Emory University School of Medicine , Atlanta , GA , USA
| | - Alicia K Smith
- a Genetics and Molecular Biology Program, Laney Graduate SchoolLaney Graduate School , Emory University School of Medicine , Atlanta , GA , USA.,b Department of Gynecology and Obstetrics , Emory University School of Medicine , Atlanta , GA , USA.,h Department of Psychiatry and Behavioral Science , Emory University School of Medicine , Atlanta , GA , USA
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19
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Okazaki H, Hirao-Suzuki M, Takeda S, Takemoto Y, Mizunoe R, Haraguchi K, Watanabe K, Takiguchi M, Aramaki H. Bisphenol AF as an activator of human estrogen receptor β1 (ERβ1) in breast cancer cell lines. J Toxicol Sci 2018; 43:321-327. [PMID: 29743443 DOI: 10.2131/jts.43.321] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Bisphenol AF (BPAF) is now recognized as one of the replacements for bisphenol A (BPA). Although considerable experimental evidence suggests that BPA is an endocrine-disrupting chemical, the toxicological profile of BPAF has been investigated in less detail than that of BPA, even at the in vitro level. BPAF has been established as an activator of estrogen receptor α (ERα) in many cell lines; however, controversy surrounds its effects on the other isoform, ERβ (i.e., whether it functions as a stimulator). Five human ERβ isoforms have been cloned and characterized. Of these, we focused on the interactions between BPAF and the two isoforms, ERβ1 and ERβ2. We demonstrated that i) BPAF functioned as a stimulator of ERβ1 (and ERα), which is transiently expressed in the two types of human breast cancer cells (MDA-MB-231 and SK-BR-3 cells) (EC50 values for ERβ: 6.87 nM and 2.58 nM, respectively, and EC50 values for ERα: 24.7 nM and 181 nM, respectively), ii) the stimulation of ERβ1 by BPAF (1-25 nM) was abrogated by PHTPP (an ERβ selective antagonist), and iii) the expression of ERβ1 and ERβ2 was not modulated by BPAF at nanomolar concentrations up to 25 nM. These results indicate that BPAF activates not only human ERα, but also the ERβ1 isoform in breast cancer cells, and exhibits higher activation potency for ERβ1.
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Affiliation(s)
| | - Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU)
| | - Shuso Takeda
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU)
| | - Yukimi Takemoto
- Department of Molecular Biology, Daiichi University of Pharmacy
| | - Ramu Mizunoe
- Department of Molecular Biology, Daiichi University of Pharmacy
| | | | - Kazuhito Watanabe
- Center for Supporting Pharmaceutical Education, Daiichi University of Pharmacy
| | - Masufumi Takiguchi
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU)
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Matsushima A. A Novel Action of Endocrine-Disrupting Chemicals on Wildlife; DDT and Its Derivatives Have Remained in the Environment. Int J Mol Sci 2018; 19:E1377. [PMID: 29734751 PMCID: PMC5983739 DOI: 10.3390/ijms19051377] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/30/2018] [Accepted: 05/02/2018] [Indexed: 02/08/2023] Open
Abstract
Huge numbers of chemicals are released uncontrolled into the environment and some of these chemicals induce unwanted biological effects, both on wildlife and humans. One class of these chemicals are endocrine-disrupting chemicals (EDCs), which are released even though EDCs can affect not only the functions of steroid hormones but also of various signaling molecules, including any ligand-mediated signal transduction pathways. Dichlorodiphenyltrichloroethane (DDT), a pesticide that is already banned, is one of the best-publicized EDCs and its metabolites have been considered to cause adverse effects on wildlife, even though the exact molecular mechanisms of the abnormalities it causes still remain obscure. Recently, an industrial raw material, bisphenol A (BPA), has attracted worldwide attention as an EDC because it induces developmental abnormalities even at low-dose exposures. DDT and BPA derivatives have structural similarities in their chemical features. In this short review, unclear points on the molecular mechanisms of adverse effects of DDT found on alligators are summarized from data in the literature, and recent experimental and molecular research on BPA derivatives is investigated to introduce novel perspectives on BPA derivatives. Especially, a recently developed BPA derivative, bisphenol C (BPC), is structurally similar to a DDT derivative called dichlorodiphenyldichloroethylene (DDE).
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Affiliation(s)
- Ayami Matsushima
- Laboratory of Structure-Function Biochemistry, Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan.
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