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Duffel MW, Lehmler HJ. Complex roles for sulfation in the toxicities of polychlorinated biphenyls. Crit Rev Toxicol 2024; 54:92-122. [PMID: 38363552 PMCID: PMC11067068 DOI: 10.1080/10408444.2024.2311270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic toxicants derived from legacy pollution sources and their formation as inadvertent byproducts of some current manufacturing processes. Metabolism of PCBs is often a critical component in their toxicity, and relevant metabolic pathways usually include their initial oxidation to form hydroxylated polychlorinated biphenyls (OH-PCBs). Subsequent sulfation of OH-PCBs was originally thought to be primarily a means of detoxication; however, there is strong evidence that it may also contribute to toxicities associated with PCBs and OH-PCBs. These contributions include either the direct interaction of PCB sulfates with receptors or their serving as a localized precursor for OH-PCBs. The formation of PCB sulfates is catalyzed by cytosolic sulfotransferases, and, when transported into the serum, these metabolites may be retained, taken up by other tissues, and subjected to hydrolysis catalyzed by intracellular sulfatase(s) to regenerate OH-PCBs. Dynamic cycling between PCB sulfates and OH-PCBs may lead to further metabolic activation of the resulting OH-PCBs. Ultimate toxic endpoints of such processes may include endocrine disruption, neurotoxicities, and many others that are associated with exposures to PCBs and OH-PCBs. This review highlights the current understanding of the complex roles that PCB sulfates can have in the toxicities of PCBs and OH-PCBs and research on the varied mechanisms that control these roles.
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Affiliation(s)
- Michael W. Duffel
- Department of Pharmaceutical Sciences & Experimental Therapeutics, College of Pharmacy, The University of Iowa, Iowa City, Iowa, 52242, United States
| | - Hans-Joachim Lehmler
- Department of Occupational and Environmental Health, College of Public Health, The University of Iowa, Iowa City, Iowa, 52242, United States
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2
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Motta G, Thangaraj SV, Padmanabhan V. Developmental Programming: Impact of Prenatal Exposure to Bisphenol A on Senescence and Circadian Mediators in the Liver of Sheep. TOXICS 2023; 12:15. [PMID: 38250971 PMCID: PMC10818936 DOI: 10.3390/toxics12010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024]
Abstract
Prenatal exposure to endocrine disruptors such as bisphenol A (BPA) plays a critical role in the developmental programming of liver dysfunction that is characteristic of nonalcoholic fatty liver disease (NAFLD). Circadian and aging processes have been implicated in the pathogenesis of NAFLD. We hypothesized that the prenatal BPA-induced fatty-liver phenotype of female sheep is associated with premature hepatic senescence and disruption in circadian clock genes. The expression of circadian rhythm and aging-associated genes, along with other markers of senescence such as telomere length, mitochondrial DNA copy number, and lipofuscin accumulation, were evaluated in the liver tissue of control and prenatal BPA groups. Prenatal BPA exposure significantly elevated the expression of aging-associated genes GLB1 and CISD2 and induced large magnitude differences in the expression of other aging genes-APOE, HGF, KLOTHO, and the clock genes PER2 and CLOCK-in the liver; the other senescence markers remained unaffected. Prenatal BPA-programmed aging-related transcriptional changes in the liver may contribute to pathological changes in liver function, elucidating the involvement of aging genes in the pathogenesis of liver steatosis.
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Affiliation(s)
| | | | - Vasantha Padmanabhan
- Department of Pediatrics, University of Michigan, Ann Arbor, MI 48105, USA; (G.M.); (S.V.T.)
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3
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Puche-Juarez M, Toledano JM, Moreno-Fernandez J, Gálvez-Ontiveros Y, Rivas A, Diaz-Castro J, Ochoa JJ. The Role of Endocrine Disrupting Chemicals in Gestation and Pregnancy Outcomes. Nutrients 2023; 15:4657. [PMID: 37960310 PMCID: PMC10648368 DOI: 10.3390/nu15214657] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 10/28/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
Endocrine disrupting chemicals (EDCs) are exogenous substances widely disseminated both in the environment and in daily-life products which can interfere with the regulation and function of the endocrine system. These substances have gradually entered the food chain, being frequently found in human blood and urine samples. This becomes a particularly serious issue when they reach vulnerable populations such as pregnant women, whose hormones are more unstable and vulnerable to EDCs. The proper formation and activity of the placenta, and therefore embryonic development, may get seriously affected by the presence of these chemicals, augmenting the risk of several pregnancy complications, including intrauterine growth restriction, preterm birth, preeclampsia, and gestational diabetes mellitus, among others. Additionally, some of them also exert a detrimental impact on fertility, thus hindering the reproductive process from the beginning. In several cases, EDCs even induce cross-generational effects, inherited by future generations through epigenetic mechanisms. These are the reasons why a proper understanding of the reproductive and gestational alterations derived from these substances is needed, along with efforts to establish regulations and preventive measures in order to avoid exposition (especially during this particular stage of life).
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Affiliation(s)
- Maria Puche-Juarez
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (M.P.-J.); (J.J.O.)
- Institute of Nutrition and Food Technology “José Mataix Verdú”, University of Granada, 18071 Granada, Spain;
- Nutrition and Food Sciences Ph.D. Program, University of Granada, 18071 Granada, Spain
| | - Juan M. Toledano
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (M.P.-J.); (J.J.O.)
- Institute of Nutrition and Food Technology “José Mataix Verdú”, University of Granada, 18071 Granada, Spain;
- Nutrition and Food Sciences Ph.D. Program, University of Granada, 18071 Granada, Spain
| | - Jorge Moreno-Fernandez
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (M.P.-J.); (J.J.O.)
- Institute of Nutrition and Food Technology “José Mataix Verdú”, University of Granada, 18071 Granada, Spain;
- Instituto de Investigación Biosanitaria (IBS), 18016 Granada, Spain;
| | - Yolanda Gálvez-Ontiveros
- Institute of Nutrition and Food Technology “José Mataix Verdú”, University of Granada, 18071 Granada, Spain;
- Department of Nutrition and Food Science, University of Granada, 18071 Granada, Spain
| | - Ana Rivas
- Instituto de Investigación Biosanitaria (IBS), 18016 Granada, Spain;
- Department of Nutrition and Food Science, University of Granada, 18071 Granada, Spain
| | - Javier Diaz-Castro
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (M.P.-J.); (J.J.O.)
- Institute of Nutrition and Food Technology “José Mataix Verdú”, University of Granada, 18071 Granada, Spain;
- Instituto de Investigación Biosanitaria (IBS), 18016 Granada, Spain;
| | - Julio J. Ochoa
- Department of Physiology, Faculty of Pharmacy, Campus Universitario de Cartuja, University of Granada, 18071 Granada, Spain; (M.P.-J.); (J.J.O.)
- Institute of Nutrition and Food Technology “José Mataix Verdú”, University of Granada, 18071 Granada, Spain;
- Instituto de Investigación Biosanitaria (IBS), 18016 Granada, Spain;
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4
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Gebru YA, Pang MG. Modulatory effects of bisphenol A on the hepatic immune response. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122430. [PMID: 37611793 DOI: 10.1016/j.envpol.2023.122430] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/16/2023] [Accepted: 08/19/2023] [Indexed: 08/25/2023]
Abstract
The liver is a primary line of defense for protection from external substances next to the intestinal barrier. As a result, the hepatic immune system plays a central role in liver pathophysiology. Bisphenol A (BPA) is one of the most common endocrine disrupting chemicals and is primarily metabolized in the liver. Due to its ability to bind to estrogen receptors, BPA is well known to possess estrogenic activity and disrupt reproductive functions. The phase I and Phase II metabolism reactions of BPA mainly occur in the liver with the help of enzymes including cytochrome P450 (CYP), uridine 5'-diphospho-glucuronosyltransferase-glucuronosyltransferases, sulfotransferases, and glutathione-S-transferases. Although the majority of BPA is excreted after conjugation by these enzymes, untransformed BPA induces the production of reactive oxygen species through disruption of the enzymatic complex CYP, lipid accumulation, mitochondrial dysfunction, endoplasmic reticulum stress and inflammatory injury in the liver. Moreover, it has been proposed to possess a potential immunomodulatory effect. Indeed, several in vivo and in vitro studies have reported that low doses of BPA increase the population of T cells with type 1 T helper (Th1), Th2, and Th17 cells. Although the current literature lacks clear evidence on the mechanisms by which BPA is involved in T cell mediated immune responses, recent multi-omics studies suggest that it may directly interact with the antigen processing and presentation pathways. In this review, we first discuss the metabolism of BPA in the liver, before exploring currently available data on its effects on liver injury. Finally, we review its modulatory effects on the hepatic immune response, as well as potential mechanisms. By conducting this review, we aim to improve understanding on the relationship between BPA exposure and immune-related liver injury, with a focus on the antigen processing and presentation pathway and T cell-mediated response in the liver.
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Affiliation(s)
- Yoseph Asmelash Gebru
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea.
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5
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McCabe CF, Goodrich JM, Bakulski KM, Domino SE, Jones TR, Colacino J, Dolinoy DC, Padmanabhan V. Probing prenatal bisphenol exposures and tissue-specific DNA methylation responses in cord blood, cord tissue, and placenta. Reprod Toxicol 2023; 115:74-84. [PMID: 36473650 PMCID: PMC9851062 DOI: 10.1016/j.reprotox.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022]
Abstract
The early-gestational fetal epigenome establishes the landscape for fetal development and is susceptible to disruption via environmental stressors including chemical exposures. Research has explored how cell- and tissue-type-specific epigenomic signatures contribute to human disease, but how the epigenome in each tissue comparatively responds to environmental exposures is largely unknown. This pilot study compared DNA methylation in four previously identified genes across matched cord blood (CB), cord tissue (CT), and placental (PL) samples from 28 mother-infant pairs in tthe Michigan Mother Infant Pairs study; evaluated association between prenatal exposure to bisphenols (BPA, BPF, and BPS) and DNA methylation (DNAm) by tissue type; compared epigenome-wide DNAm of CB and PL; and explored associations between prenatal bisphenol exposures and epigenome-wide DNAm in PL. Bisphenol concentrations were quantified in first-trimester maternal urine. DNAm was assessed at four genes via pyrosequencing in three tissues; epigenome-wide DNAm analysis via Infinium MethylationEPIC array was completed on CB and PL. Candidate gene analysis revealed tissue-specific differences across all genes. In adjusted linear regression, BPA and BPF were associated with DNAm across candidate genes in PL but not CB and CT. Epigenome-wide comparison of matched CB and PL DNAm revealed tissue-specific differences at most CpG sites and modest associations between maternal first-trimester bisphenol exposures and PL but not CB DNAm. These data endorse inclusion of a variety of tissues in prenatal exposure studies. Overlapping and divergent responses in CB, CT, and PL demonstrate their utility in combination to capture a fuller picture of the epigenetic effect of developmental exposures.
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Affiliation(s)
- Carolyn F McCabe
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Jaclyn M Goodrich
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Kelly M Bakulski
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Steven E Domino
- Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Tamara R Jones
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Justin Colacino
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Dana C Dolinoy
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA; Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Vasantha Padmanabhan
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA; Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, USA; Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, MI, USA.
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6
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Ismael LQ, Abdulhameed AR, Keong YY, Abdullah MNH, Bahari H, Jie TJ, Yin KB. Bisphenol A is a carcinogen that induces lipid accumulation, peroxisome proliferator‑activated receptor‑γ expression and liver disease. Exp Ther Med 2022; 24:735. [PMID: 36466761 PMCID: PMC9709766 DOI: 10.3892/etm.2022.11671] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 08/24/2022] [Indexed: 11/05/2022] Open
Abstract
Bisphenol (BP) A is an exogenous endocrine disruptor that mimics hormones closely associated with health complications, e.g., obesity and cancers. The present study aimed to evaluate the effects of BPA on human liver cells and tissue. The peroxisome proliferator-activated receptor (PPAR)-γ expression profile across tumour samples and paired normal tissue was first analysed using GEPIA. Subsequently, BPA-treated liver THLE-2 cell viability was evaluated using an MTT assay. Clusterin, PPARα and PPARγ gene expression in BPA-treated THLE-2 cells was assessed using GEPIA before validating the gene expression using real-time PCR and analysing overall survival using TCGA data in GEPIA. Cytoplasmic lipid accumulation was examined in BPA-treated THLE-2 cells using Oil Red O staining, and liver tissue was examined using haematoxylin and eosin staining. Finally, cytochrome P450 (CYP) gene expression was assessed in BPA-treated THLE-2 cells using real-time PCR. PPARγ is likely the primary nuclear receptor protein involved in lipid accumulation in THLE-2 cells following BPA treatment and is associated with liver disease. THLE-2 cells exposed to BPA showed a decrease in viability and lipid accumulation after 48 h treatment. Higher PPARγ gene expression was significantly associated with survival of patients with liver cancer, with an average survival time of <80 months. Haematoxylin and eosin-stained sections showed notable disruption of the liver architecture in tissue exposed to BPA. Downregulated CYP1A1 and CYP1B1 gene expression implied that BPA-treated THLE-2 cells decreased capacity for carcinogen metabolism, while upregulated CYP2S1 gene expression exerted minimal cytotoxicity. The present study revealed that BPA served as a carcinogen, enhanced tumorigenesis susceptibility and may induce other types of liver disease.
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Affiliation(s)
- Layla Qasim Ismael
- Institute for Research in Molecular Medicine, University Sains Malaysia, Minden, Penang 11800, Malaysia
- Department of Medical Biochemical Analysis, Cihan University-Erbil, Erbil 44001, Iraq
| | - Ahmed Rashid Abdulhameed
- Physiology Unit, Department of Human Anatomy, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang 43400, Malaysia
| | - Yong Yoke Keong
- Physiology Unit, Department of Human Anatomy, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang 43400, Malaysia
| | - Muhammad Nazrul Hakim Abdullah
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang 43400, Malaysia
| | - Hasnah Bahari
- Physiology Unit, Department of Human Anatomy, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang 43400, Malaysia
| | - Tan Jun Jie
- Advanced Medical and Dental Institute, University Sains Malaysia, Bertam, Penang 13200, Malaysia
| | - Khoo Boon Yin
- Institute for Research in Molecular Medicine, University Sains Malaysia, Minden, Penang 11800, Malaysia
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7
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Endocrine-Disrupting Effects of Bisphenol A on the Cardiovascular System: A Review. J Xenobiot 2022; 12:181-213. [PMID: 35893265 PMCID: PMC9326625 DOI: 10.3390/jox12030015] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/10/2022] [Accepted: 07/11/2022] [Indexed: 11/21/2022] Open
Abstract
Currently, the plastic monomer and plasticizer bisphenol A (BPA) is one of the most widely used chemicals. BPA is present in polycarbonate plastics and epoxy resins, commonly used in food storage and industrial or medical products. However, the use of this synthetic compound is a growing concern, as BPA is an endocrine-disrupting compound and can bind mainly to estrogen receptors, interfering with different functions at the cardiovascular level. Several studies have investigated the disruptive effects of BPA; however, its cardiotoxicity remains unclear. Therefore, this review’s purpose is to address the most recent studies on the implications of BPA on the cardiovascular system. Our findings suggest that BPA impairs cardiac excitability through intracellular mechanisms, involving the inhibition of the main ion channels, changes in Ca2+ handling, the induction of oxidative stress, and epigenetic modifications. Our data support that BPA exposure increases the risk of developing cardiovascular diseases (CVDs) including atherosclerosis and its risk factors such as hypertension and diabetes. Furthermore, BPA exposure is also particularly harmful in pregnancy, promoting the development of hypertensive disorders during pregnancy. In summary, BPA exposure compromises human health, promoting the development and progression of CVDs and risk factors. Further studies are needed to clarify the human health effects of BPA-induced cardiotoxicity.
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8
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Tachibana K, Kawazoe S, Onoda A, Umezawa M, Takeda K. Effects of Prenatal Exposure to Titanium Dioxide Nanoparticles on DNA Methylation and Gene Expression Profile in the Mouse Brain. FRONTIERS IN TOXICOLOGY 2022; 3:705910. [PMID: 35295148 PMCID: PMC8915839 DOI: 10.3389/ftox.2021.705910] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 09/13/2021] [Indexed: 12/12/2022] Open
Abstract
Background and Objectives: Titanium dioxide nanoparticles (TiO2-NP) are important materials used in commercial practice. Reportedly, TiO2-NP exposure during pregnancy can affect the development of the central nervous system in mouse offspring; however, the underlying mechanism remains unknown. In the present study, we investigated the impact of prenatal TiO2-NP exposure on global DNA methylation and mRNA expression patterns in the brains of neonatal mice. Materials and Methods: Pregnant C57BL/6J mice were intratracheally administered a TiO2-NP suspension (100 μg/mouse) on gestational day 10.5, and brains were collected from male and female offspring at day 1 postpartum. After extraction of methylated DNA by immunoprecipitation, the DNA methylation profile was analyzed using a mouse CpG island microarray. Total RNA was obtained, and mRNA expression profiles were comprehensively assessed using microarray analysis. Results: Among genes in the CpG island microarray, DNA methylation was increased in 614 and 2,924 genes and decreased in 6,220 and 6,477 genes in male and female offspring, respectively. Combined with mRNA microarray analysis, 88 and 89 genes were upregulated (≥1.5-fold) accompanied by demethylation of CpG islands, whereas 13 and 33 genes were downregulated (≤0.67-fold) accompanied by methylation of CpG islands in male and female offspring mice, respectively. Gene Set Enrichment Analysis (GSEA) revealed that these genes were enriched in gene ontology terms related to the regulation of transcription factors, cell proliferation, and organism development. Additionally, MeSH terms related to stem cells and morphogenesis were enriched. Conclusion: Prenatal TiO2-NP exposure induced genome-wide alterations in DNA methylation and mRNA expression in the brains of male and female offspring. Based on GSEA findings, it can be speculated that prenatal TiO2-NP exposure causes adverse effects on brain functions by altering the DNA methylation state of the fetal brain, especially neural stem cells, resulting in the subsequent abnormal regulation of transcription factors that modulate development and differentiation.
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Affiliation(s)
- Ken Tachibana
- Division of Toxicology and Health Science, Faculty of Pharmaceutical Sciences, Sanyo-onoda City University, Sanyo-onoda, Japan.,The Center for Environmental Health Science for the Next Generation, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, Noda, Japan.,Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Shotaro Kawazoe
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Atsuto Onoda
- Division of Toxicology and Health Science, Faculty of Pharmaceutical Sciences, Sanyo-onoda City University, Sanyo-onoda, Japan.,The Center for Environmental Health Science for the Next Generation, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, Noda, Japan.,Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Masakazu Umezawa
- The Center for Environmental Health Science for the Next Generation, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, Noda, Japan.,Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan.,Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Katsushika, Japan
| | - Ken Takeda
- Division of Toxicology and Health Science, Faculty of Pharmaceutical Sciences, Sanyo-onoda City University, Sanyo-onoda, Japan.,The Center for Environmental Health Science for the Next Generation, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, Noda, Japan.,Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
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Shin A, Waxman DJ. Impact of neonatal activation of nuclear receptor CAR (Nr1i3) on Cyp2 gene expression in adult mouse liver. Toxicol Sci 2022; 187:298-310. [PMID: 35285501 DOI: 10.1093/toxsci/kfac032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Perinatal exposure to environmental chemicals is proposed to reprogram development and alter disease susceptibility later in life. Supporting this, neonatal activation of the nuclear receptor CAR (Nr1i3) by TCPOBOP induces persistent expression of mouse hepatic Cyp2 genes into adulthood, attributed to long-term epigenetic memory of the early life exposure [Hepatology (2012) 56:1499-1509]. Here, we confirm that the same high-dose (15x ED50) neonatal TCPOBOP exposure used in that work induces prolonged (12 weeks) increases in hepatic Cyp2 expression; however, we show that the persistence of expression can be fully explained by the persistence of residual TCPOBOP in liver tissue. When the long-term presence of TCPOBOP in tissue was eliminated by decreasing the neonatal TCPOBOP dose 22-fold (0.67x ED50), strong neonatal increases in hepatic Cyp2 expression were still obtained but did not persist into adulthood. Furthermore, the neonatal ED50-range TCPOBOP exposure did not sensitize mice to a subsequent, low-dose TCPOBOP treatment. In contrast, neonatal treatment with phenobarbital, a short half-life (t1/2=8 h) agonist of CAR and of PXR (Nr1i2), induced high-level neonatal activation of Cyp2 genes and also altered their responsiveness to low-dose phenobarbital exposure at adulthood by either increasing (Cyp2b10) or decreasing (Cyp2c55) expression. Thus, neonatal xenobiotic exposure can reprogram hepatic Cyp2 genes and alter their responsiveness to exposures later in life. These findings highlight the need to carefully consider xenobiotic dose, half-life and persistence in tissue when evaluating the long-term effects of early life environmental chemical exposures.
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Affiliation(s)
- Aram Shin
- Department of Biology and Bioinformatics Program, Boston University, Boston, Massachusetts 02215, USA
| | - David J Waxman
- Department of Biology and Bioinformatics Program, Boston University, Boston, Massachusetts 02215, USA
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10
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Lorigo M, Cairrao E. Fetoplacental vasculature as a model to study human cardiovascular endocrine disruption. Mol Aspects Med 2021; 87:101054. [PMID: 34839931 DOI: 10.1016/j.mam.2021.101054] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 10/15/2021] [Accepted: 11/18/2021] [Indexed: 12/11/2022]
Abstract
Increasing evidence has associated the exposure of endocrine-disrupting chemicals (EDCs) with the cardiovascular (CV) system. This exposure is particularly problematic in a sensitive window of development, pregnancy. Pregnancy exposome can affect the overall health of the pregnancy by dramatic changes in vascular physiology and endocrine activity, increasing maternal susceptibility. Moreover, fetoplacental vascular function is generally altered, increasing the risk of developing pregnancy complications (including cardiovascular diseases, CVD) and predisposing the foetus to adverse health risks later in life. Thus, our review summarizes the existing literature on exposures to EDCs during pregnancy and adverse maternal health outcomes, focusing on the human placenta, vein, and umbilical artery associated with pregnancy complications. The purpose of this review is to highlight the role of fetoplacental vasculature as a model for the study of human cardiovascular endocrine disruption. Therefore, we emphasize that the placenta, together with the umbilical arteries and veins, allows a better characterization of the pregnant woman's exposome. Consequently, it contributes to the protection of the mother and foetus against CV disorders in life.
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Affiliation(s)
- Margarida Lorigo
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, 6200-506, Covilhã, Portugal; FCS - UBI, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal
| | - Elisa Cairrao
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, 6200-506, Covilhã, Portugal; FCS - UBI, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal.
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11
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Song X, Zhou X, Yang F, Liang H, Wang Z, Li R, Miao M, Yuan W. Association between prenatal bisphenol a exposure and promoter hypermethylation of CAPS2, TNFRSF25, and HKR1 genes in cord blood. ENVIRONMENTAL RESEARCH 2020; 190:109996. [PMID: 32763279 DOI: 10.1016/j.envres.2020.109996] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 07/15/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
In utero exposure to bisphenol A (BPA) in early stages of development has been reported to exert adverse health effects on offspring later in life. Epigenetic alterations, particularly DNA methylation, may be one plausible biological mechanism involved. We examined the association between maternal BPA exposure and DNA methylation in cord blood. We randomly selected 96 paired samples of maternal urine and infant cord blood collected from the Shanghai-Minhang Birth Cohort. BPA levels in maternal urine were measured using high-performance liquid chromatography (HPLC). Three cord blood samples with maternal BPA levels >2.0 μg/g Cr and three samples with undetected BPA were randomly selected for genome-wide methylation analysis using methylated DNA binding domain sequencing (MBD-Seq). The genes with hypermethylated promoter regions were chosen for validation using quantitative methylation-specific polymerase chain reaction (Q-MSP). Based on MBD-seq results, we observed that maternal BPA exposure was primarily associated with hypermethylation of genes involved in signal transduction in the nervous system. Using Q-MSP, we further validated the association between maternal BPA exposure and promoter hypermethylation of three genes in multiple linear regression models: a log unit increase in BPA was associated with 12.63% (95%CI: 7.99, 17.26), 11.17%, (95%CI: 3.31, 19.02), and 16.57% (95% CI: 10.59, 22.56) increase in promoter of CAPS2, TNFRSF25, and HKR1 methylation, respectively. Our findings provide evidence that in utero exposure to BPA could alter the offspring's epigenome by altering DNA methylation pattern.
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Affiliation(s)
- Xiuxia Song
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Xiaoyu Zhou
- Shanghai Tongshu Biotechnology Co., Ltd., China
| | - Fen Yang
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Hong Liang
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Ziliang Wang
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Runsheng Li
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China.
| | - Maohua Miao
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China.
| | - Wei Yuan
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
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12
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Mustieles V, D'Cruz SC, Couderq S, Rodríguez-Carrillo A, Fini JB, Hofer T, Steffensen IL, Dirven H, Barouki R, Olea N, Fernández MF, David A. Bisphenol A and its analogues: A comprehensive review to identify and prioritize effect biomarkers for human biomonitoring. ENVIRONMENT INTERNATIONAL 2020; 144:105811. [PMID: 32866736 DOI: 10.1016/j.envint.2020.105811] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/24/2020] [Accepted: 05/07/2020] [Indexed: 05/21/2023]
Abstract
Human biomonitoring (HBM) studies have demonstrated widespread and daily exposure to bisphenol A (BPA). Moreover, BPA structural analogues (e.g. BPS, BPF, BPAF), used as BPA replacements, are being increasingly detected in human biological matrices. BPA and some of its analogues are classified as endocrine disruptors suspected of contributing to adverse health outcomes such as altered reproduction and neurodevelopment, obesity, and metabolic disorders among other developmental and chronic impairments. One of the aims of the H2020 European Human Biomonitoring Initiative (HBM4EU) is the implementation of effect biomarkers at large scales in future HBM studies in a systematic and standardized way, in order to complement exposure data with mechanistically-based biomarkers of early adverse effects. This review aimed to identify and prioritize existing biomarkers of effect for BPA, as well as to provide relevant mechanistic and adverse outcome pathway (AOP) information in order to cover knowledge gaps and better interpret effect biomarker data. A comprehensive literature search was performed in PubMed to identify all the epidemiologic studies published in the last 10 years addressing the potential relationship between bisphenols exposure and alterations in biological parameters. A total of 5716 references were screened, out of which, 119 full-text articles were analyzed and tabulated in detail. This work provides first an overview of all epigenetics, gene transcription, oxidative stress, reproductive, glucocorticoid and thyroid hormones, metabolic and allergy/immune biomarkers previously studied. Then, promising effect biomarkers related to altered neurodevelopmental and reproductive outcomes including brain-derived neurotrophic factor (BDNF), kisspeptin (KiSS), and gene expression of nuclear receptors are prioritized, providing mechanistic insights based on in vitro, animal studies and AOP information. Finally, the potential of omics technologies for biomarker discovery and its implications for risk assessment are discussed. To the best of our knowledge, this is the first effort to comprehensively identify bisphenol-related biomarkers of effect for HBM purposes.
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Affiliation(s)
- Vicente Mustieles
- University of Granada, Center for Biomedical Research (CIBM), Spain; Instituto de Investigación Biosanitaria (ibs. GRANADA), Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain.
| | - Shereen Cynthia D'Cruz
- Univ Rennes, EHESP, Inserm, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Stephan Couderq
- Evolution des Régulations Endocriniennes, Département "Adaptation du Vivant", UMR 7221 MNHN/CNRS, Sorbonne Université, Paris 75006, France
| | | | - Jean-Baptiste Fini
- Evolution des Régulations Endocriniennes, Département "Adaptation du Vivant", UMR 7221 MNHN/CNRS, Sorbonne Université, Paris 75006, France
| | - Tim Hofer
- Section of Toxicology and Risk Assessment, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, NO-0213 Oslo, Norway
| | - Inger-Lise Steffensen
- Section of Toxicology and Risk Assessment, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, NO-0213 Oslo, Norway
| | - Hubert Dirven
- Section of Toxicology and Risk Assessment, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, NO-0213 Oslo, Norway
| | - Robert Barouki
- University Paris Descartes, ComUE Sorbonne Paris Cité, Paris, France. Institut national de la santé et de la recherche médicale (INSERM, National Institute of Health & Medical Research) UMR S-1124, Paris, France
| | - Nicolás Olea
- University of Granada, Center for Biomedical Research (CIBM), Spain; Instituto de Investigación Biosanitaria (ibs. GRANADA), Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain
| | - Mariana F Fernández
- University of Granada, Center for Biomedical Research (CIBM), Spain; Instituto de Investigación Biosanitaria (ibs. GRANADA), Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain.
| | - Arthur David
- Univ Rennes, EHESP, Inserm, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France.
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13
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Rolfo A, Nuzzo AM, De Amicis R, Moretti L, Bertoli S, Leone A. Fetal-Maternal Exposure to Endocrine Disruptors: Correlation with Diet Intake and Pregnancy Outcomes. Nutrients 2020; 12:E1744. [PMID: 32545151 PMCID: PMC7353272 DOI: 10.3390/nu12061744] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/25/2020] [Accepted: 06/07/2020] [Indexed: 02/06/2023] Open
Abstract
Endocrine-disrupting chemicals (EDCs) are exogenous substances able to mimic or to interfere with the endocrine system, thus altering key biological processes such as organ development, reproduction, immunity, metabolism and behavior. High concentrations of EDCs are found in several everyday products including plastic bottles and food containers and they could be easily absorbed by dietary intake. In recent years, considerable interest has been raised regarding the biological effects of EDCs, particularly Bisphenol A (BPA) and phthalates, on human pregnancy and fetal development. Several evidence obtained on in vitro and animal models as well as by epidemiologic and population studies strongly indicated that endocrine disruptors could negatively impact fetal and placental health by interfering with the embryonic developing epigenome, thus establishing disease paths into adulthood. Moreover, EDCs could cause and/or contribute to the onset of severe gestational conditions as Preeclampsia (PE), Fetal Growth Restriction (FGR) and gestational diabetes in pregnancy, as well as obesity, diabetes and cardiovascular complications in reproductive age. Therefore, despite contrasting data being present in the literature, endocrine disruptors must be considered as a therapeutic target. Future actions aimed at reducing or eliminating EDC exposure during the perinatal period are mandatory to guarantee pregnancy success and preserve fetal and adult health.
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Affiliation(s)
- Alessandro Rolfo
- Department of Surgical Sciences, University of Turin, Via Ventimiglia 3, 10126 Turin, Italy; (A.M.N.); (L.M.)
| | - Anna Maria Nuzzo
- Department of Surgical Sciences, University of Turin, Via Ventimiglia 3, 10126 Turin, Italy; (A.M.N.); (L.M.)
| | - Ramona De Amicis
- International Center for the Assessment of Nutritional Status (ICANS), Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via Sandro Botticelli 21, 20133 Milan, Italy; (R.D.A.); (S.B.); (A.L.)
| | - Laura Moretti
- Department of Surgical Sciences, University of Turin, Via Ventimiglia 3, 10126 Turin, Italy; (A.M.N.); (L.M.)
| | - Simona Bertoli
- International Center for the Assessment of Nutritional Status (ICANS), Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via Sandro Botticelli 21, 20133 Milan, Italy; (R.D.A.); (S.B.); (A.L.)
- Istituto Auxologico Italiano, IRCCS, Lab of Nutrition and Obesity Research, 20145 Milan, Italy
| | - Alessandro Leone
- International Center for the Assessment of Nutritional Status (ICANS), Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via Sandro Botticelli 21, 20133 Milan, Italy; (R.D.A.); (S.B.); (A.L.)
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14
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Treviño LS, Dong J, Kaushal A, Katz TA, Jangid RK, Robertson MJ, Grimm SL, Ambati CSR, Putluri V, Cox AR, Kim KH, May TD, Gallo MR, Moore DD, Hartig SM, Foulds CE, Putluri N, Coarfa C, Walker CL. Epigenome environment interactions accelerate epigenomic aging and unlock metabolically restricted epigenetic reprogramming in adulthood. Nat Commun 2020; 11:2316. [PMID: 32385268 PMCID: PMC7210260 DOI: 10.1038/s41467-020-15847-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 03/19/2020] [Indexed: 12/13/2022] Open
Abstract
Our early-life environment has a profound influence on developing organs that impacts metabolic function and determines disease susceptibility across the life-course. Using a rat model for exposure to an endocrine disrupting chemical (EDC), we show that early-life chemical exposure causes metabolic dysfunction in adulthood and reprograms histone marks in the developing liver to accelerate acquisition of an adult epigenomic signature. This epigenomic reprogramming persists long after the initial exposure, but many reprogrammed genes remain transcriptionally silent with their impact on metabolism not revealed until a later life exposure to a Western-style diet. Diet-dependent metabolic disruption was largely driven by reprogramming of the Early Growth Response 1 (EGR1) transcriptome and production of metabolites in pathways linked to cholesterol, lipid and one-carbon metabolism. These findings demonstrate the importance of epigenome:environment interactions, which early in life accelerate epigenomic aging, and later in adulthood unlock metabolically restricted epigenetic reprogramming to drive metabolic dysfunction. Early life exposure to environmental stressors, including endocrine disrupting chemicals (EDCs), can impact health later in life. Here, the authors show that neonatal EDC exposure in rats causes epigenetic reprogramming in the liver, which is transcriptionally silent until animals are placed on a Western-style diet.
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Affiliation(s)
- Lindsey S Treviño
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Division of Health Equities, Department of Population Sciences, City of Hope, Duarte, CA, 91010, USA
| | - Jianrong Dong
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Ahkilesh Kaushal
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Tiffany A Katz
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Rahul Kumar Jangid
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Matthew J Robertson
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Sandra L Grimm
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Chandra Shekar R Ambati
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Vasanta Putluri
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Aaron R Cox
- Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Kang Ho Kim
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Thaddeus D May
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Morgan R Gallo
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA
| | - David D Moore
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Sean M Hartig
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Charles E Foulds
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Nagireddy Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Cristian Coarfa
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA. .,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA.
| | - Cheryl Lyn Walker
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA. .,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA.
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15
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Li D, Wu L, Knox B, Chen S, Tolleson WH, Liu F, Yu D, Guo L, Tong W, Ning B. Long noncoding RNA LINC00844-mediated molecular network regulates expression of drug metabolizing enzymes and nuclear receptors in human liver cells. Arch Toxicol 2020; 94:1637-1653. [PMID: 32222775 DOI: 10.1007/s00204-020-02706-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/09/2020] [Indexed: 12/21/2022]
Abstract
Noncoding RNAs, such as long noncoding RNAs (lncRNAs) and microRNAs (miRNAs), regulate gene expression in many physiological and pathological processes, including drug metabolism. Drug metabolizing enzymes (DMEs) are critical components in drug-induced liver toxicity. In this study, we used human hepatic HepaRG cells treated with 5 or 10 mM acetaminophen (APAP) as a model system and identified LINC00844 as a toxicity-responsive lncRNA. We analyzed the expression profiles of LINC00844 in different human tissues. In addition, we examined the correlations between the levels of LINC00844 and those of key DMEs and nuclear receptors (NRs) for APAP metabolism in humans. Our results showed that lncRNA LINC00844 is enriched in the liver and its expression correlates positively with mRNA levels of CYP3A4, CYP2E1, SULT2A1, pregnane X receptor (PXR), and hepatocyte nuclear factor (HNF) 4α. We demonstrated that LINC00844 regulates the expression of these five genes in HepaRG cells using gain- and loss-of-function assays. Further, we discovered that LINC00844 is localized predominantly in the cytoplasm and acts as an hsa-miR-486-5p sponge, via direct binding, to protect SULT2A1 from miRNA-mediated gene silencing. Our data also demonstrated a functional interaction between LINC00844 and hsa-miR-486-5p in regulating DME and NR expression in HepaRG cells and primary human hepatocytes. We depicted a LINC00844-mediated regulatory network that involves miRNA and NRs and influences DME expression in response to APAP toxicity.
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Affiliation(s)
- Dongying Li
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - Leihong Wu
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - Bridgett Knox
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - Si Chen
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - William H Tolleson
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - Fang Liu
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - Dianke Yu
- School of Public Health, Qingdao University, Qingdao, China
| | - Lei Guo
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - Weida Tong
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA
| | - Baitang Ning
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, HFT100, Jefferson, AR, 72079, USA.
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16
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Miura R, Araki A, Minatoya M, Miyake K, Chen ML, Kobayashi S, Miyashita C, Yamamoto J, Matsumura T, Ishizuka M, Kubota T, Kishi R. An epigenome-wide analysis of cord blood DNA methylation reveals sex-specific effect of exposure to bisphenol A. Sci Rep 2019; 9:12369. [PMID: 31451752 PMCID: PMC6710292 DOI: 10.1038/s41598-019-48916-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 08/15/2019] [Indexed: 12/11/2022] Open
Abstract
Exposure to bisphenol A (BPA) in utero is associated with adverse health outcome of the offspring. Differential DNA methylation at specific CpG sites may link BPA exposure to health impacts. We examined the association of prenatal BPA exposure with genome-wide DNA methylation changes in cord blood in 277 mother-child pairs in the Hokkaido Study on Environment and Children’s Health, using the Illumina HumanMethylation 450 BeadChip. We observed that a large portion of BPA-associated differentially methylated CpGs with p-value < 0.0001 was hypomethylated among all newborns (91%) and female infants (98%), as opposed to being hypermethylated (88%) among males. We found 27 and 16 CpGs with a false discovery rate (FDR) < 0.05 in the analyses for males and females, respectively. Genes annotated to FDR-corrected CpGs clustered into an interconnected genetic network among males, while they rarely exhibited any interactions in females. In contrast, none of the enrichment for gene ontology (GO) terms with FDR < 0.05 was observed for genes annotated to the male-specific CpGs with p < 0.0001, whereas the female-specific genes were significantly enriched for GO terms related to cell adhesion. Our epigenome-wide analysis of cord blood DNA methylation implies potential sex-specific epigenome responses to BPA exposure.
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Affiliation(s)
- Ryu Miura
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Atsuko Araki
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Machiko Minatoya
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Kunio Miyake
- Department of Health Sciences, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Japan
| | - Mei-Lien Chen
- Institute of Environmental and Occupational Health Sciences, National Yang Ming University, Taipei, Taiwan
| | - Sumitaka Kobayashi
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Chihiro Miyashita
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Jun Yamamoto
- Institute of Environmental Ecology, Idea Consultants, Inc., Shizuoka, Japan
| | - Toru Matsumura
- Institute of Environmental Ecology, Idea Consultants, Inc., Shizuoka, Japan
| | - Mayumi Ishizuka
- Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Takeo Kubota
- Faculty of Child Studies, Seitoku University, Chiba, Japan
| | - Reiko Kishi
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan.
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17
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Li D, Knox B, Chen S, Wu L, Tolleson WH, Liu Z, Yu D, Guo L, Tong W, Ning B. MicroRNAs hsa-miR-495-3p and hsa-miR-486-5p suppress basal and rifampicin-induced expression of human sulfotransferase 2A1 (SULT2A1) by facilitating mRNA degradation. Biochem Pharmacol 2019; 169:113617. [PMID: 31445882 DOI: 10.1016/j.bcp.2019.08.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 08/20/2019] [Indexed: 12/17/2022]
Abstract
Drug metabolizing enzymes mediate biotransformation of drugs and play an essential role in drug efficacy and toxicity. Human sulfotransferases are a superfamily of Phase II detoxification enzymes that metabolize a wide spectrum of endogenous compounds and xenobiotics. SULT2A1 is one of the most abundant hepatic sulfotransferases and it catalyzes the sulfate conjugation of many endogenous substrates, such as bile acids and steroids. In the current study, we utilized a systematic approach by combining a series of computational analyses and in vitro methods to identify miRNAs that repress SULT2A1 expression post-transcriptionally. Our in silico analyses predicted miRNA response elements for hsa-miR-495-3p and hsa-miR-486-5p within the 3'-UTR of SULT2A1 mRNA and the levels of these miRNAs were inversely correlated with that of SULT2A1 mRNA in human liver. Using fluorescence-based RNA electrophoretic mobility shift assays, we found that hsa-miR-495-3p and hsa-miR-486-5p interacted directly with the SULT2A1 3'-UTR. The activity of a luciferase reporter gene construct containing sequences from the SULT2A1 3-UTR was suppressed by hsa-miR-486-5p and hsa-miR-495-3p. Furthermore, gain- and loss-of-function assays demonstrated that hsa-miR-486-5p and hsa-miR-495-3p negatively modulate basal and rifampicin-induced expression of SULT2A1 in HepG2 cells by decreasing mRNA stability.
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Affiliation(s)
- Dongying Li
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Bridgett Knox
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Si Chen
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Leihong Wu
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - William H Tolleson
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Zhichao Liu
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Dianke Yu
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Lei Guo
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Weida Tong
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Baitang Ning
- National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR 72079, USA.
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18
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Vyas AK, Veiga-Lopez A, Ye W, Abi Salloum B, Abbott DH, Yang S, Liao C, Kannan K, Padmanabhan V. Developmental programming: Sex-specific programming of growth upon prenatal bisphenol A exposure. J Appl Toxicol 2019; 39:1516-1531. [PMID: 31338854 DOI: 10.1002/jat.3836] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/15/2019] [Accepted: 05/17/2019] [Indexed: 12/15/2022]
Abstract
In both human and animals, in utero exposure to bisphenol A (BPA), an endocrine-disrupting chemical used in the production of plastics and epoxy resins, has been shown to affect offspring reproductive and metabolic health during adult life. We hypothesized that the effect of prenatal exposure to environmentally relevant doses of BPA will be evident during fetal organogenesis and fetal/postnatal growth trajectory. Pregnant ewes were administered BPA subcutaneously from 30 to 90 days of gestation (term 147 days). Fetal organ weight, anthropometric measures, maternal/fetal hormones and postnatal growth trajectory were measured in both sexes. Gestational BPA administration resulted in higher accumulation in male than female fetuses only at fetal day 65, with minimal impact on fetal/maternal steroid milieu in both sexes at both time points. BPA-treated male fetuses were heavier than BPA-treated female fetuses at fetal day 90 whereas this sex difference was not evident in the control group. At the organ level, liver weight was reduced in prenatal BPA-treated female fetuses, while heart and thyroid gland weights were increased in BPA-treated male fetuses relative to their sex-matched control groups. Prenatal BPA treatment also altered the postnatal growth trajectory in a sex-specific manner. Males grew slower during the early postnatal period and caught up later. Females, in contrast, demonstrated the opposite growth trend. Prenatal BPA-induced changes in fetal organ differentiation and early life growth strongly implicate translational relevance of in utero contributions to reproductive and metabolic defects previously reported in adult female offspring.
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Affiliation(s)
- Arpita Kalla Vyas
- College of Medicine, California Northstate University, Elk Grove, California
| | | | - Wen Ye
- Biostatistics Department, School of Public Health, Ann Arbor, Michigan
| | | | - David H Abbott
- Department of Obstetrics and Gynecology and Wisconsin National Primate Research Center, University of Wisconsin, Madison, Wisconsin
| | - Shengping Yang
- Department of Biostatistics, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Chunyang Liao
- New York State Department of Health, Wadsworth Center, Albany, New York
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19
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Qiu W, Liu S, Yang F, Dong P, Yang M, Wong M, Zheng C. Metabolism disruption analysis of zebrafish larvae in response to BPA and BPA analogs based on RNA-Seq technique. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:181-188. [PMID: 30826544 DOI: 10.1016/j.ecoenv.2019.01.126] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/29/2018] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
Bisphenol A (BPA) is an environmentally ubiquitous chemical widely used in industry and is known to have adverse effects on organisms. Given the negative effect, BPA-free products have been developed with BPA analogs such as bisphenol F (BPF) and bisphenol S (BPS); however, these analogs are proving to exhibit toxicity similar to that of BPA. In the present study, we aimed to identify and compare the underlying mechanisms of toxicity of BPA, BPF, and BPS at the transcriptional level by conducting global transcriptome sequencing (RNA-Seq) on zebrafish embryos. RNA-seq results showed that the expression levels of 285, 191, and 246 genes were significantly changed in zebrafish larvae after embryos were treated for 120 h with 100 μg/L BPA, BPF, and BPS, respectively. Among the genes exhibiting altered expression, a substantial number were common to two or three exposure groups, suggesting consistent toxicity between the three bisphenols. We further validated the expression levels of 19 differentially expressed genes by qRT-PCR, using sequencing RNA and the RNA samples after treatment by 0.01, 1, and 100 μg/L bisphenols under identical condition, the results were similar to RNA-Seq. Moreover, functional enrichment analysis indicated that metabolism was the main pathway which disrupted in zebrafish larvae by bisphenols treatment. Protein-protein interaction network analysis indicated that six DEGs (ces, cda, dpyd, upp1, upp2, and cmpk2) interact together in the drug metabolism of zebrafish. In summary, our study revealed changes in the transcription of genes upon bisphenols treatment in zebrafish larvae for the first time, indicating that BPF and BPS may cause adverse effects similar to BPA via their involvement in various biological processes, providing a solid foundation for further research on the toxicology of BPA analogs.
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Affiliation(s)
- Wenhui Qiu
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; 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.
| | - Shuai Liu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Feng Yang
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; 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
| | - Peiyao Dong
- Institute of Water Sciences, College of Engineering, Peking University, Peking 100871, China
| | - Ming Yang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Minghung Wong
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chunmiao Zheng
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; 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.
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20
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Li S, Chen M, Li Y, Tollefsbol TO. Prenatal epigenetics diets play protective roles against environmental pollution. Clin Epigenetics 2019; 11:82. [PMID: 31097039 PMCID: PMC6524340 DOI: 10.1186/s13148-019-0659-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 03/27/2019] [Indexed: 12/12/2022] Open
Abstract
It is thought that germ cells and preimplantation embryos during development are most susceptible to endogenous and exogenous environmental factors because the epigenome in those cells is undergoing dramatic elimination and reconstruction. Exposure to environmental factors such as nutrition, climate, stress, pathogens, toxins, and even social behavior during gametogenesis and early embryogenesis has been shown to influence disease susceptibility in the offspring. Early-life epigenetic modifications, which determine the expression of genetic information stored in the genome, are viewed as one of the general mechanisms linking prenatal exposure and phenotypic changes later in life. From atmospheric pollution, endocrine-disrupting chemicals to heavy metals, research increasingly suggests that environmental pollutions have already produced significant consequences on human health. Moreover, mounting evidence now links such pollution to relevant modification in the epigenome. The epigenetics diet, referring to a class of bioactive dietary compounds such as isothiocyanates in broccoli, genistein in soybean, resveratrol in grape, epigallocatechin-3-gallate in green tea, and ascorbic acid in fruits, has been shown to modify the epigenome leading to beneficial health outcomes. This review will primarily focus on the causes and consequences of prenatal environment pollution exposure on the epigenome, and the potential protective role of the epigenetics diet, which could play a central role in neutralizing epigenomic aberrations against environmental pollutions.
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Affiliation(s)
- Shizhao Li
- Department of Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Min Chen
- Department of Pharmacology and Toxicology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Yuanyuan Li
- Department of Pharmacology and Toxicology, University of Alabama at Birmingham, Birmingham, AL, USA.
- Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA.
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Trygve O Tollefsbol
- Department of Biology, University of Alabama at Birmingham, Birmingham, AL, USA.
- Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA.
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL, USA.
- Comprehensive Center for Healthy Aging, University of Alabama at Birmingham, Birmingham, AL, USA.
- Comprehensive Diabetes Center, University of Alabama at Birmingham, Birmingham, AL, USA.
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21
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Wu Q, Odwin-Dacosta S, Cao S, Yager JD, Tang WY. Estrogen down regulates COMT transcription via promoter DNA methylation in human breast cancer cells. Toxicol Appl Pharmacol 2019; 367:12-22. [DOI: 10.1016/j.taap.2019.01.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/03/2019] [Accepted: 01/21/2019] [Indexed: 12/13/2022]
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22
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Shu L, Meng Q, Diamante G, Tsai B, Chen YW, Mikhail A, Luk H, Ritz B, Allard P, Yang X. Prenatal Bisphenol A Exposure in Mice Induces Multitissue Multiomics Disruptions Linking to Cardiometabolic Disorders. Endocrinology 2019; 160:409-429. [PMID: 30566610 PMCID: PMC6349005 DOI: 10.1210/en.2018-00817] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 12/13/2018] [Indexed: 12/21/2022]
Abstract
The health impacts of endocrine-disrupting chemicals (EDCs) remain debated, and their tissue and molecular targets are poorly understood. In this study, we leveraged systems biology approaches to assess the target tissues, molecular pathways, and gene regulatory networks associated with prenatal exposure to the model EDC bisphenol A (BPA). Prenatal BPA exposure at 5 mg/kg/d, a dose below most reported no-observed-adverse-effect levels, led to tens to thousands of transcriptomic and methylomic alterations in the adipose, hypothalamus, and liver tissues in male offspring in mice, with cross-tissue perturbations in lipid metabolism as well as tissue-specific alterations in histone subunits, glucose metabolism, and extracellular matrix. Network modeling prioritized main molecular targets of BPA, including Pparg, Hnf4a, Esr1, Srebf1, and Fasn as well as numerous less studied targets such as Cyp51 and long noncoding RNAs across tissues, Fa2h in hypothalamus, and Nfya in adipose tissue. Lastly, integrative analyses identified the association of BPA molecular signatures with cardiometabolic phenotypes in mouse and human. Our multitissue, multiomics investigation provides strong evidence that BPA perturbs diverse molecular networks in central and peripheral tissues and offers insights into the molecular targets that link BPA to human cardiometabolic disorders.
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Affiliation(s)
- Le Shu
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California
- Molecular, Cellular, and Integrative Physiology Interdepartmental Program, University of California, Los Angeles, Los Angeles, California
| | - Qingying Meng
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California
| | - Graciel Diamante
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California
| | - Brandon Tsai
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California
| | - Yen-Wei Chen
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, California
| | - Andrew Mikhail
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California
| | - Helen Luk
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California
| | - Beate Ritz
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California
- Institute for Society and Genetics, University of California, Los Angeles, Los Angeles, California
| | - Patrick Allard
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, California
- Institute for Society and Genetics, University of California, Los Angeles, Los Angeles, California
| | - Xia Yang
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California
- Molecular, Cellular, and Integrative Physiology Interdepartmental Program, University of California, Los Angeles, Los Angeles, California
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, California
- Institute for Quantitative and Computational Biosciences, University of California, Los Angeles, Los Angeles, California
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23
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Montrose L, Padmanabhan V, Goodrich JM, Domino SE, Treadwell MC, Meeker JD, Watkins DJ, Dolinoy DC. Maternal levels of endocrine disrupting chemicals in the first trimester of pregnancy are associated with infant cord blood DNA methylation. Epigenetics 2018. [PMID: 29513082 DOI: 10.1080/15592294.2018.1448680] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Endocrine disrupting chemicals (EDCs) pose a public health risk through disruption of normal biological processes. Identifying toxicoepigenetic mechanisms of developmental exposure-induced effects for EDCs, such as phthalates or bisphenol A (BPA), is essential. Here, we investigate whether maternal exposure to EDCs is predictive of infant DNA methylation at candidate gene regions. In the Michigan Mother-Infant Pairs (MMIP) cohort, DNA was extracted from cord blood leukocytes for methylation analysis by pyrosequencing (n = 116) and methylation changes related to first trimester levels of 9 phthalate metabolites and BPA. Growth and metabolism-related genes selected for methylation analysis included imprinted (IGF2, H19) and non-imprinted (PPARA, ESR1) genes along with LINE-1 repetitive elements. Findings revealed decreases in methylation of LINE-1, IGF2, and PPARA with increasing phthalate concentrations. For example, a log unit increase in ΣDEHP corresponded to a 1.03 [95% confidence interval (CI): -1.83, -0.22] percentage point decrease in PPARA methylation. Changes in DNA methylation were also inversely correlated with PPARA gene expression determined by RT-qPCR (r = -0.34, P = 0.02), thereby providing evidence in support of functional relevance. A sex-stratified analysis of EDCs and DNA methylation showed that some relationships were female-specific. For example, urinary BPA exposure was associated with a 1.35 (95%CI: -2.69, -0.01) percentage point decrease in IGF2 methylation and a 1.22 (95%CI: -2.27, -0.16) percentage point decrease in PPARA methylation in females only. These findings add to a body of evidence suggesting epigenetically labile regions may provide a conduit linking early exposures with disease risk later in life and that toxicoepigenetic susceptibility may be sex specific.
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Affiliation(s)
- Luke Montrose
- a Department of Environmental Health Sciences, School of Public Health , University of Michigan , Ann Arbor , MI , USA
| | - Vasantha Padmanabhan
- a Department of Environmental Health Sciences, School of Public Health , University of Michigan , Ann Arbor , MI , USA.,b Department of Pediatrics , University of Michigan , Ann Arbor , MI , USA.,c Department of Obstetrics and Gynecology , University of Michigan , Ann Arbor , MI , USA
| | - Jaclyn M Goodrich
- a Department of Environmental Health Sciences, School of Public Health , University of Michigan , Ann Arbor , MI , USA
| | - Steven E Domino
- c Department of Obstetrics and Gynecology , University of Michigan , Ann Arbor , MI , USA
| | - Marjorie C Treadwell
- c Department of Obstetrics and Gynecology , University of Michigan , Ann Arbor , MI , USA
| | - John D Meeker
- a Department of Environmental Health Sciences, School of Public Health , University of Michigan , Ann Arbor , MI , USA
| | - Deborah J Watkins
- a Department of Environmental Health Sciences, School of Public Health , University of Michigan , Ann Arbor , MI , USA
| | - Dana C Dolinoy
- a Department of Environmental Health Sciences, School of Public Health , University of Michigan , Ann Arbor , MI , USA.,d Department of Nutritional Sciences , University of Michigan , Ann Arbor , MI , USA
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24
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Martin EM, Fry RC. Environmental Influences on the Epigenome: Exposure- Associated DNA Methylation in Human Populations. Annu Rev Public Health 2018; 39:309-333. [PMID: 29328878 DOI: 10.1146/annurev-publhealth-040617-014629] [Citation(s) in RCA: 371] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
DNA methylation is the most well studied of the epigenetic regulators in relation to environmental exposures. To date, numerous studies have detailed the manner by which DNA methylation is influenced by the environment, resulting in altered global and gene-specific DNA methylation. These studies have focused on prenatal, early-life, and adult exposure scenarios. The present review summarizes currently available literature that demonstrates a relationship between DNA methylation and environmental exposures. It includes studies on aflatoxin B1, air pollution, arsenic, bisphenol A, cadmium, chromium, lead, mercury, polycyclic aromatic hydrocarbons, persistent organic pollutants, tobacco smoke, and nutritional factors. It also addresses gaps in the literature and future directions for research. These gaps include studies of mixtures, sexual dimorphisms with respect to environmentally associated methylation changes, tissue specificity, and temporal stability of the methylation marks.
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Affiliation(s)
- Elizabeth M Martin
- Department of Environmental Sciences and Engineering, and Curriculum in Toxicology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina 27599, USA; ,
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, and Curriculum in Toxicology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina 27599, USA; ,
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25
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Bisphenol-A exposure in utero programs a sexually dimorphic estrogenic state of hepatic metabolic gene expression. Reprod Toxicol 2017; 71:84-94. [DOI: 10.1016/j.reprotox.2017.05.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 04/12/2017] [Accepted: 05/01/2017] [Indexed: 01/09/2023]
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26
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Breton CV, Marsit CJ, Faustman E, Nadeau K, Goodrich JM, Dolinoy DC, Herbstman J, Holland N, LaSalle JM, Schmidt R, Yousefi P, Perera F, Joubert BR, Wiemels J, Taylor M, Yang IV, Chen R, Hew KM, Freeland DMH, Miller R, Murphy SK. Small-Magnitude Effect Sizes in Epigenetic End Points are Important in Children's Environmental Health Studies: The Children's Environmental Health and Disease Prevention Research Center's Epigenetics Working Group. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:511-526. [PMID: 28362264 PMCID: PMC5382002 DOI: 10.1289/ehp595] [Citation(s) in RCA: 196] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/24/2016] [Accepted: 09/27/2016] [Indexed: 05/15/2023]
Abstract
BACKGROUND Characterization of the epigenome is a primary interest for children's environmental health researchers studying the environmental influences on human populations, particularly those studying the role of pregnancy and early-life exposures on later-in-life health outcomes. OBJECTIVES Our objective was to consider the state of the science in environmental epigenetics research and to focus on DNA methylation and the collective observations of many studies being conducted within the Children's Environmental Health and Disease Prevention Research Centers, as they relate to the Developmental Origins of Health and Disease (DOHaD) hypothesis. METHODS We address the current laboratory and statistical tools available for epigenetic analyses, discuss methods for validation and interpretation of findings, particularly when magnitudes of effect are small, question the functional relevance of findings, and discuss the future for environmental epigenetics research. DISCUSSION A common finding in environmental epigenetic studies is the small-magnitude epigenetic effect sizes that result from such exposures. Although it is reasonable and necessary that we question the relevance of such small effects, we present examples in which small effects persist and have been replicated across populations and across time. We encourage a critical discourse on the interpretation of such small changes and further research on their functional relevance for children's health. CONCLUSION The dynamic nature of the epigenome will require an emphasis on future longitudinal studies in which the epigenome is profiled over time, over changing environmental exposures, and over generations to better understand the multiple ways in which the epigenome may respond to environmental stimuli.
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Affiliation(s)
| | | | | | - Kari Nadeau
- Stanford University, Palo Alto, California, USA
- University of California, Berkeley, Berkeley, California, USA
| | | | | | | | - Nina Holland
- University of California, Berkeley, Berkeley, California, USA
| | | | | | - Paul Yousefi
- University of California, Berkeley, Berkeley, California, USA
| | | | - Bonnie R. Joubert
- National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina
| | - Joseph Wiemels
- University of California at San Francisco, San Francisco, California, USA
| | | | - Ivana V. Yang
- University of Colorado, Denver, Colorado, USA
- National Jewish Health, Denver, Colorado, USA
| | - Rui Chen
- Stanford University, Palo Alto, California, USA
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27
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Bucher S, Jalili P, Le Guillou D, Begriche K, Rondel K, Martinais S, Zalko D, Corlu A, Robin MA, Fromenty B. Bisphenol a induces steatosis in HepaRG cells using a model of perinatal exposure. ENVIRONMENTAL TOXICOLOGY 2017; 32:1024-1036. [PMID: 27322340 DOI: 10.1002/tox.22301] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 05/10/2016] [Accepted: 05/21/2016] [Indexed: 06/06/2023]
Abstract
Human exposure to bisphenol A (BPA) could favor obesity and related metabolic disorders such as hepatic steatosis. Investigations in rodents have shown that these deleterious effects are observed not only when BPA is administered during the adult life but also with different protocols of perinatal exposure. Whether perinatal BPA exposure could pose a risk in human is currently unknown, and thus appropriate in vitro models could be important to tackle this major issue. Accordingly, we determined whether long-term BPA treatment could induce steatosis in human HepaRG cells by using a protocol mimicking perinatal exposure. To this end, the kinetics of expression of seven proteins differentially expressed during liver development was determined during a 4-week period of cell culture required for proliferation and differentiation. By analogy with data reported in rodents and humans, our results indicated that the period of cell culture around day 15 and day 18 after seeding could be considered as the "natal" period. Consequently, HepaRG cells were treated for 3 weeks with BPA (from 0.2 to 2000 nM), with a treatment starting during the proliferating period. BPA was able to induce steatosis with a nonmonotonic dose response profile, with significant effects on neutral lipids and triglycerides observed for the 2 nM concentration. However, the expression of many enzymes involved in lipid and carbohydrate homeostasis was unchanged in exposed HepaRG cells. The expression of other potential BPA targets and enzymes involved in BPA biotransformation was also determined, giving answers as well as new questions regarding the mechanisms of action of BPA. Hence, HepaRG cells provide a valuable model that can prove useful for the toxicological assessment of endocrine disruptors on hepatic metabolisms, in particular in the developing liver. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1024-1036, 2017.
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Affiliation(s)
- Simon Bucher
- INSERM, UMR991, Université De Rennes 1, Rennes, France
| | - Pégah Jalili
- INSERM, UMR991, Université De Rennes 1, Rennes, France
| | | | | | - Karine Rondel
- INSERM, UMR991, Université De Rennes 1, Rennes, France
| | | | - Daniel Zalko
- UMR1331, TOXALIM (Research Centre in Food Toxicology), Institut National De La Recherche Agronomique (INRA), Université De Toulouse, Toulouse, France
| | - Anne Corlu
- INSERM, UMR991, Université De Rennes 1, Rennes, France
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28
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Porreca I, Ulloa-Severino L, Almeida P, Cuomo D, Nardone A, Falco G, Mallardo M, Ambrosino C. Molecular targets of developmental exposure to bisphenol A in diabesity: a focus on endoderm-derived organs. Obes Rev 2017; 18:99-108. [PMID: 27776381 DOI: 10.1111/obr.12471] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/08/2016] [Accepted: 08/23/2016] [Indexed: 12/20/2022]
Abstract
Several studies associate foetal human exposure to bisphenol A (BPA) to metabolic/endocrine diseases, mainly diabesity. They describe the role of BPA in the disruption of pancreatic beta cell, adipocyte and hepatocyte functions. Indeed, the complexity of the diabesity phenotype is due to the involvement of different endoderm-derived organs, all targets of BPA. Here, we analyse this point delineating a picture of different mechanisms of BPA toxicity in endoderm-derived organs leading to diabesity. Moving from epidemiological data, we summarize the in vivo experimental data of the BPA effects on endoderm-derived organs (thyroid, pancreas, liver, gut, prostate and lung) after prenatal exposure. Mainly, we gather molecular data evidencing harmful effects at low-dose exposure, pointing to the risk to human health. Although the fragmentation of molecular data does not allow a clear conclusion to be drawn, the present work indicates that the developmental exposure to BPA represents a risk for endoderm-derived organs development as it deregulates the gene expression from the earliest developmental stages. A more systematic analysis of BPA impact on the transcriptomes of endoderm-derived organs is still missing. Here, we suggest in vitro toxicogenomics approaches as a tool for the identification of common mechanisms of BPA toxicity leading to the diabesity in organs having the same developmental origin.
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Affiliation(s)
| | - L Ulloa-Severino
- IRGS, Biogem, Ariano Irpino, Italy.,PhD School in Nanotechnology, University of Trieste, Trieste, Italy
| | - P Almeida
- STAB VIDA-Investigação e Serviços em Ciências Biológicas, Madan Parque, Caparica, Portugal
| | - D Cuomo
- IRGS, Biogem, Ariano Irpino, Italy
| | - A Nardone
- Department of Public Health, University of Naples 'Federico II', Naples, Italy
| | - G Falco
- IRGS, Biogem, Ariano Irpino, Italy.,Department of Biology, University of Naples 'Federico II', Naples, Italy
| | - M Mallardo
- Molecular Medicine and Medical Biotechnologies, University of Naples 'Federico II', Naples, Italy
| | - C Ambrosino
- IRGS, Biogem, Ariano Irpino, Italy.,Department of Science and Technology, University of Sannio, Benevento, Italy
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29
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Volz DC, Leet JK, Chen A, Stapleton H, Katiyar N, Kaundal R, Yu Y, Wang Y. Tris(1,3-dichloro-2-propyl)phosphate Induces Genome-Wide Hypomethylation within Early Zebrafish Embryos. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:10255-63. [PMID: 27574916 PMCID: PMC5080636 DOI: 10.1021/acs.est.6b03656] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Tris(1,3-dichloro-2-propyl)phosphate (TDCIPP) is a high-production volume organophosphate-based plasticizer and flame retardant widely used within the United States. Using zebrafish as a model, the objectives of this study were to determine whether (1) TDCIPP inhibits DNA methyltransferase (DNMT) within embryonic nuclear extracts; (2) uptake of TDCIPP from 0.75 h postfertilization (hpf, 2-cell) to 2 hpf (64-cell) or 6 hpf (shield stage) leads to impacts on the early embryonic DNA methylome; and (3) TDCIPP-induced impacts on cytosine methylation are localized to CpG islands within intergenic regions. Within this study, 5-azacytidine (5-azaC, a DNMT inhibitor) was used as a positive control. Although 5-azaC significantly inhibited zebrafish DNMT, TDCIPP did not affect DNMT activity in vitro at concentrations as high as 500 μM. However, rapid embryonic uptake of 5-azaC and TDCIPP from 0.75 to 2 hpf resulted in chemical- and chromosome-specific alterations in cytosine methylation at 2 hpf. Moreover, TDCIPP exposure predominantly resulted in hypomethylation of positions outside of CpG islands and within intragenic (exon) regions of the zebrafish genome. Overall, these findings provide the foundation for monitoring DNA methylation dynamics within zebrafish as well as identifying potential associations among TDCIPP exposure, adverse health outcomes, and DNA methylation status within human populations.
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Affiliation(s)
- David C. Volz
- Department
of Environmental Sciences, University of
California, Riverside, Riverside, California 92521, United States
- D. C. Volz. Phone: (951)
827-4450; Fax: (951) 827-3993; E-mail:
| | - Jessica K. Leet
- Department
of Environmental Health Sciences, University
of South Carolina, Columbia, South Carolina 29208, United States
| | - Albert Chen
- Division
of Environmental Sciences and Policy, Duke
University, Durham, North Carolina 27708, United States
| | - Heather
M. Stapleton
- Division
of Environmental Sciences and Policy, Duke
University, Durham, North Carolina 27708, United States
| | - Neerja Katiyar
- Bioinformatics
Facility, Institute for Integrative Genome Biology, University of California, Riverside, Riverside, California 92521, United States
| | - Rakesh Kaundal
- Bioinformatics
Facility, Institute for Integrative Genome Biology, University of California, Riverside, Riverside, California 92521, United States
| | - Yang Yu
- Department
of Chemistry, University of California,
Riverside, Riverside, California 92521, United States
| | - Yinsheng Wang
- Department
of Chemistry, University of California,
Riverside, Riverside, California 92521, United States
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30
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Fischer C, Mamillapalli R, Goetz LG, Jorgenson E, Ilagan Y, Taylor HS. Bisphenol A (BPA) Exposure In Utero Leads to Immunoregulatory Cytokine Dysregulation in the Mouse Mammary Gland: A Potential Mechanism Programming Breast Cancer Risk. HORMONES & CANCER 2016; 7:241-51. [PMID: 26911702 PMCID: PMC10726733 DOI: 10.1007/s12672-016-0254-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 02/05/2016] [Indexed: 12/27/2022]
Abstract
Bisphenol-A (BPA) is a ubiquitous estrogen-like endocrine disrupting compound (EDC). BPA exposure in utero has been linked to breast cancer and abnormal mammary gland development in mice. The recent rise in incidence of human breast cancer and decreased age of first detection suggests a possible environmental etiology. We hypothesized that developmental programming of carcinogenesis may involve an aberrant immune response. Both innate and adaptive immunity play a role in tumor suppression through cytolytic CD8, NK, and Th1 T-cells. We hypothesized that BPA exposure in utero would lead to dysregulation of both innate and adaptive immunity in the mammary gland. CD1 mice were exposed to BPA in utero during gestation (days 9-21) via osmotic minipump. At 6 weeks, the female offspring were ovariectomized and estradiol was given at 8 weeks. RNA and protein were extracted from the posterior mammary glands, and the mRNA and protein levels were measured by PCR array, qRT-PCR, and western blot. In mouse mammary tissue, BPA exposure in utero significantly decreased the expression of members of the chemokine CXC family (Cxcl2, Cxcl4, Cxcl14, and Ccl20), interleukin 1 (Il1) gene family (Il1β and Il1rn), interleukin 2 gene family (Il7 receptor), and interferon gene family (interferon regulatory factor 9 (Irf9), as well as immune response gene 1 (Irg1). Additionally, BPA exposure in utero decreased Esr1 receptor gene expression and increased Esr2 receptor gene expression. In utero exposure of BPA resulted in significant changes to inflammatory modulators within mammary tissue. We suggest that dysregulation of inflammatory cytokines, both pro-inflammatory and anti-inflammatory, leads to a microenvironment that may promote disordered cell growth through inhibition of the immune response that targets cancer cells.
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Affiliation(s)
- Catha Fischer
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, 333 Cedar Street, P.O. Box 208063, New Haven, CT, 06510, USA
| | - Ramanaiah Mamillapalli
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, 333 Cedar Street, P.O. Box 208063, New Haven, CT, 06510, USA.
| | - Laura G Goetz
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, 333 Cedar Street, P.O. Box 208063, New Haven, CT, 06510, USA
| | - Elisa Jorgenson
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, 333 Cedar Street, P.O. Box 208063, New Haven, CT, 06510, USA
| | - Ysabel Ilagan
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, 333 Cedar Street, P.O. Box 208063, New Haven, CT, 06510, USA
| | - Hugh S Taylor
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, 333 Cedar Street, P.O. Box 208063, New Haven, CT, 06510, USA
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, 06520, USA
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31
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Goodrich JM, Dolinoy DC, Sánchez BN, Zhang Z, Meeker JD, Mercado-Garcia A, Solano-González M, Hu H, Téllez-Rojo MM, Peterson KE. Adolescent epigenetic profiles and environmental exposures from early life through peri-adolescence. ENVIRONMENTAL EPIGENETICS 2016; 2:dvw018. [PMID: 29492298 PMCID: PMC5804533 DOI: 10.1093/eep/dvw018] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 07/18/2016] [Indexed: 05/07/2023]
Abstract
Epigenetic perturbations induced by environmental exposures at susceptible lifestages contribute to disease development. Even so, the influence of early life and ongoing exposures on the adolescent epigenome is rarely examined. We examined the association of exposure biomarkers for lead (Pb), bisphenol A (BPA), and nine phthalates metabolites with blood leukocyte DNA methylation at LINE-1 repetitive elements and environmentally responsive genes ( IGF2 , H19 , and HSD11B2 ) in peri-adolescents. Participants ( n = 247) from the Early Life Exposures in Mexico to Environmental Toxicants (ELEMENT) birth cohorts were followed-up once between the ages of 8 and 14 years, and concurrent exposures were measured in biospecimen collected at that time (blood Pb, urinary BPA, and phthalate metabolites). Prenatal and childhood exposures to Pb were previously approximated using maternal and child samples. BPA and phthalate metabolites were measured in third trimester maternal urine samples. Significant associations ( P < 0.05) were observed between DNA methylation and exposure biomarkers that were gene and biomarker specific. For example, Pb was only associated with LINE-1 hypomethylation during pregnancy ( P = 0.04), while early childhood Pb was instead associated with H19 hypermethylation ( P = 0.04). Concurrent urinary mono (2-ethylhexyl) phthalate (MEHP) was associated with HSD11B2 hypermethylation ( P = 0.005). Sex-specific associations, particularly among males, were also observed. In addition to single exposure models, principal component analysis was employed to examine exposure mixtures. This method largely corroborated the findings of the single exposure models. This study along with others in the field suggests that environment-epigenetic relationships vary by chemical, exposure timing, and sex.
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Affiliation(s)
- Jaclyn M. Goodrich
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Dana C. Dolinoy
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA
| | - Brisa N. Sánchez
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Zhenzhen Zhang
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - John D. Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Adriana Mercado-Garcia
- Center for Research on Nutrition and Health, National Institute of Public Health, Cuernavaca, Morelos, México
| | - Maritsa Solano-González
- Center for Research on Nutrition and Health, National Institute of Public Health, Cuernavaca, Morelos, México
| | - Howard Hu
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Martha M. Téllez-Rojo
- Center for Research on Nutrition and Health, National Institute of Public Health, Cuernavaca, Morelos, México
| | - Karen E. Peterson
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA
- Department of Nutrition, Harvard School of Public Health, Boston, MA, USA
- *Correspondence address: 1415 Washington Heights, Ann Arbor, MI 48109-2029, USA. Tel: +1 734 647 1923; Fax: +1 734 936 7283; E-mail:
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Goodrich JM, Reddy P, Naidoo RN, Asharam K, Batterman S, Dolinoy DC. Prenatal exposures and DNA methylation in newborns: a pilot study in Durban, South Africa. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2016; 18:908-17. [PMID: 27359112 PMCID: PMC4945397 DOI: 10.1039/c6em00074f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The in utero environment has the potential to influence epigenetic programming and subsequently the health of offspring. Even though pregnant women living in urban Africa are exposed to multiple chemicals and infectious agents that may impact their developing children, the neonatal epigenome has not been studied in these regions. We assessed whether prenatal exposures to air pollution and maternal human immunodeficiency virus (HIV) are associated with changes to DNA methylation throughout the epigenome using a pilot sample from the Mother and Child Environmental (MACE) birth cohort, of which 36% of the mothers are HIV positive. Families living in a high air pollution region (south Durban, n = 11) and a low air pollution region (north Durban, n = 11) with comparable socioeconomic characteristics were selected for analysis. DNA methylation was quantified in cord blood plasma DNA at >430 000 CpG sites using the Infinium HumanMethylation450 BeadChip. Sites associated with living in south Durban or maternal HIV infection (p < 0.001) were more likely to be hypomethylated and located in CpG islands. Top differentially methylated sites by region of Durban were enriched in pathways related to xenobiotic metabolism, oxygen and gas transport, and sensory perception of chemical stimuli when performing gene set enrichment testing with LRpath. Differentially methylated sites by maternal HIV status were enriched in cytochrome P450s, pathways involved in detection of chemical stimuli, metabolic processes, and viral regulation and processing. Given the small sample size of the study, future work examining the impact of prenatal exposures to air pollution, maternal infection, and antiviral treatment on the epigenome and downstream health implications is merited in Sub-Saharan African populations.
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Affiliation(s)
- Jaclyn M Goodrich
- Department of Environmental Health Sciences, University of Michigan, 1415 Washington Heights, Ann Arbor, MI 48109, USA.
| | - Poovendhree Reddy
- Department of Community Health Studies, Durban University of Technology, Durban, South Africa
| | - Rajen N Naidoo
- Discipline of Occupational and Environmental Health, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Kareshma Asharam
- Discipline of Occupational and Environmental Health, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Stuart Batterman
- Department of Environmental Health Sciences, University of Michigan, 1415 Washington Heights, Ann Arbor, MI 48109, USA.
| | - Dana C Dolinoy
- Department of Environmental Health Sciences, University of Michigan, 1415 Washington Heights, Ann Arbor, MI 48109, USA. and Department of Nutritional Sciences, University of Michigan, Ann Arbor, MI, USA
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33
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Sharma R, Kotyk MW, Wiltshire WA. An investigation into bisphenol A leaching from materials used intraorally. J Am Dent Assoc 2016; 147:545-50. [DOI: 10.1016/j.adaj.2016.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 01/20/2016] [Accepted: 01/22/2016] [Indexed: 02/07/2023]
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Keating DP. Transformative Role of Epigenetics in Child Development Research: Commentary on the Special Section. Child Dev 2016; 87:135-42. [DOI: 10.1111/cdev.12488] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Select Prenatal Environmental Exposures and Subsequent Alterations of Gene-Specific and Repetitive Element DNA Methylation in Fetal Tissues. Curr Environ Health Rep 2016; 2:126-36. [PMID: 26231362 DOI: 10.1007/s40572-015-0045-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Strong evidence implicates maternal environmental exposures in contributing to adverse outcomes during pregnancy and later in life through the developmental origins of health and disease hypothesis. Recent research suggests these effects are mediated through the improper regulation of DNA methylation in offspring tissues, specifically placental tissue, which plays a critical role in fetal development. This article reviews the relevant literature relating DNA methylation in multiple tissues at or near delivery to several prenatal environmental toxicants and stressors, including cigarette smoke, endocrine disruptors, heavy metals, as well as maternal diet. These human studies expand upon previously reported outcomes in animal model interventions and include effects on both imprinted and non-imprinted genes. We have also noted some of the strengths and limitations in the approaches used, and consider the appropriate interpretation of these findings in terms of their effect size and their relationship to differential gene expression and potential health outcomes. The studies suggest an important role of DNA methylation in mediating the effects of the intrauterine environment on children's health and a need for additional research to better clarify the role of this epigenetic mechanism as well as others.
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36
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Abstract
There is a growing interest in understanding the mechanisms that drive the developmental origins of health and disease, and the role of epigenetic regulation has risen to the forefront of these studies. In particular, the placenta may be a model organ to consider as a mediator of the impact of the environment on developmental programming of children's health, as this organ plays a critical role in directing development and regulating the fetal environment. Several recent studies have begun to examine how environmental toxicant exposures can impact the placental epigenome, focusing on studies of DNA methylation and microRNA expression. This review highlights several of these studies and emphasizes the potential the placenta may hold on the broader understanding of the impact of the intrauterine environment on long-term health.
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Affiliation(s)
- Carmen J Marsit
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
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37
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Seachrist DD, Bonk KW, Ho SM, Prins GS, Soto AM, Keri RA. A review of the carcinogenic potential of bisphenol A. Reprod Toxicol 2015; 59:167-82. [PMID: 26493093 DOI: 10.1016/j.reprotox.2015.09.006] [Citation(s) in RCA: 251] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 09/09/2015] [Accepted: 09/18/2015] [Indexed: 12/20/2022]
Abstract
The estrogenic properties of bisphenol A (BPA), a ubiquitous synthetic monomer that can leach into the food and water supply, have prompted considerable research into exposure-associated health risks in humans. Endocrine-disrupting properties of BPA suggest it may impact developmental plasticity during early life, predisposing individuals to disease at doses below the oral reference dose (RfD) established by the Environmental Protection Agency in 1982. Herein, we review the current in vivo literature evaluating the carcinogenic properties of BPA. We conclude that there is substantial evidence from rodent studies indicating that early-life BPA exposures below the RfD lead to increased susceptibility to mammary and prostate cancer. Based on the definitions of "carcinogen" put forth by the International Agency for Research on Cancer and the National Toxicology Program, we propose that BPA may be reasonably anticipated to be a human carcinogen in the breast and prostate due to its tumor promoting properties.
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Affiliation(s)
- Darcie D Seachrist
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106-4965, USA
| | - Kristen W Bonk
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106-4965, USA
| | - Shuk-Mei Ho
- Department of Environmental Health, University of Cincinnati, Cincinnati, OH 45267-0056, USA
| | - Gail S Prins
- Departments of Urology, Physiology and Biophysics, University of Illinois, Chicago, IL 60612-7310, USA
| | - Ana M Soto
- Department of Integrative Physiology and Pathobiology, Tufts University, Boston, MA 02111, USA
| | - Ruth A Keri
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106-4965, USA.
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38
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Vaiserman A. Epidemiologic evidence for association between adverse environmental exposures in early life and epigenetic variation: a potential link to disease susceptibility? Clin Epigenetics 2015; 7:96. [PMID: 26366233 PMCID: PMC4567831 DOI: 10.1186/s13148-015-0130-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 09/01/2015] [Indexed: 12/21/2022] Open
Abstract
A growing body of evidence suggests that the risk of development and progression of a variety of human chronic diseases depends on epigenetic modifications triggered by environmental cues during early life sensitive stages. Exposures to environmental factors such as adverse nutritional, psychological, and social conditions, as well as pollutants and substance abuse in early life, have been shown to be important determinants of epigenetic programming of chronic pathological conditions in human populations. Over the past years, it has become increasingly clear due to the epigenome-wide association studies (EWASs) that early life adverse environmental events may trigger widespread and persistent alterations in transcriptional profiling. Several candidate genes have been identified underlying these associations. In this context, DNA methylation is the most intensively studied epigenetic phenomenon. In this review, the clinical and epidemiological evidence for the role of epigenetic factors in mediating the link between early life experiences and long-term health outcomes are summarized.
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39
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DeBenedictis B, Guan H, Yang K. Prenatal Exposure to Bisphenol A Disrupts Mouse Fetal Liver Maturation in a Sex-Specific Manner. J Cell Biochem 2015; 117:344-50. [PMID: 26146954 DOI: 10.1002/jcb.25276] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 06/30/2015] [Indexed: 12/31/2022]
Abstract
Bisphenol A (BPA) is one of the most prevalent endocrine disrupting chemicals in the environment. Developmental exposure to BPA is known to be associated with liver dysfunction and diseases, such as hepatic steatosis, liver tumors, metabolic syndrome, and altered hepatic gene expression, and DNA methylation profiles. However, the effects of BPA on rodent liver development are unknown. The present study was undertaken to address this important question using the mouse as an experimental model. Pregnant mice were exposed to BPA via diet from embryonic day 7.5 (E7.5) to E18.5. At E18.5, fetal livers were collected, and analyzed for changes in the expression of key hepatocyte maturation markers. We found the following significant alterations in BPA-exposed female but not male fetal livers: (a) levels of the mature hepatocyte markers, albumin and glycogen synthase proteins, were decreased (-65% and -40%, respectively); (b) levels of the immature hepatocyte marker, α-fetoprotein, were increased (+43%); (c) the level of C/EBP-α protein, the master transcription factor essential for hepatocyte maturation, was down-regulated (-50%); and (d) the level of PCNA protein (marker of proliferation) was elevated (+40%), while that of caspase-3 protein and activity (markers of apoptosis) was reduced (-40% and -55%, respectively), suggestive of a perturbed balance between cell proliferation and apoptosis in BPA-exposed female fetuses. Taken together, these findings demonstrate that prenatal exposure to BPA disrupts the mouse fetal liver maturation in a sex-specific manner, and suggest a fetal origin for BPA-induced hepatic dysfunction and diseases.
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Affiliation(s)
- Bianca DeBenedictis
- Departments of Obstetrics and Gynaecology, Western University, London, Ontario, Canada, N6C 2V5.,Departments of Physiology and Pharmacology, Western University, London, Ontario, Canada, N6C 2V5.,Children's Health Research Institute, Western University, London, Ontario, Canada, N6C 2V5
| | - Haiyan Guan
- Departments of Obstetrics and Gynaecology, Western University, London, Ontario, Canada, N6C 2V5.,Departments of Physiology and Pharmacology, Western University, London, Ontario, Canada, N6C 2V5.,Children's Health Research Institute, Western University, London, Ontario, Canada, N6C 2V5
| | - Kaiping Yang
- Departments of Obstetrics and Gynaecology, Western University, London, Ontario, Canada, N6C 2V5.,Departments of Physiology and Pharmacology, Western University, London, Ontario, Canada, N6C 2V5.,Children's Health Research Institute, Western University, London, Ontario, Canada, N6C 2V5
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40
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Jiménez-Chillarón JC, Nijland MJ, Ascensão AA, Sardão VA, Magalhães J, Hitchler MJ, Domann FE, Oliveira PJ. Back to the future: transgenerational transmission of xenobiotic-induced epigenetic remodeling. Epigenetics 2015; 10:259-73. [PMID: 25774863 DOI: 10.1080/15592294.2015.1020267] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Epigenetics, or regulation of gene expression independent of DNA sequence, is the missing link between genotype and phenotype. Epigenetic memory, mediated by histone and DNA modifications, is controlled by a set of specialized enzymes, metabolite availability, and signaling pathways. A mostly unstudied subject is how sub-toxic exposure to several xenobiotics during specific developmental stages can alter the epigenome and contribute to the development of disease phenotypes later in life. Furthermore, it has been shown that exposure to low-dose xenobiotics can also result in further epigenetic remodeling in the germ line and contribute to increase disease risk in the next generation (multigenerational and transgenerational effects). We here offer a perspective on current but still incomplete knowledge of xenobiotic-induced epigenetic alterations, and their possible transgenerational transmission. We also propose several molecular mechanisms by which the epigenetic landscape may be altered by environmental xenobiotics and hypothesize how diet and physical activity may counteract epigenetic alterations.
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41
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Strakovsky RS, Wang H, Engeseth NJ, Flaws JA, Helferich WG, Pan YX, Lezmi S. Developmental bisphenol A (BPA) exposure leads to sex-specific modification of hepatic gene expression and epigenome at birth that may exacerbate high-fat diet-induced hepatic steatosis. Toxicol Appl Pharmacol 2015; 284:101-12. [PMID: 25748669 DOI: 10.1016/j.taap.2015.02.021] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 02/18/2015] [Accepted: 02/23/2015] [Indexed: 12/25/2022]
Abstract
Developmental bisphenol A (BPA) exposure increases adulthood hepatic steatosis with reduced mitochondrial function. To investigate the potential epigenetic mechanisms behind developmental BPA-induced hepatic steatosis, pregnant Sprague-Dawley rats were dosed with vehicle (oil) or BPA (100μg/kg/day) from gestational day 6 until postnatal day (PND) 21. After weaning, offspring were either challenged with a high-fat (HF; 45% fat) or remained on a control (C) diet until PND110. From PND60 to 90, both BPA and HF diet increased the fat/lean ratio in males only, and the combination of BPA and HF diet appeared to cause the highest ratio. On PND110, Oil-HF, BPA-C, and BPA-HF males had higher hepatic lipid accumulation than Oil-C, with microvesicular steatosis being marked in the BPA-HF group. Furthermore, on PND1, BPA increased and modified hepatic triglyceride (TG) and free fatty acid (FFA) compositions in males only. In PND1 males, BPA increased hepatic expression of FFA uptake gene Fat/Cd36, and decreased the expression of TG synthesis- and β-oxidation-related genes (Dgat, Agpat6, Cebpα, Cebpβ, Pck1, Acox1, Cpt1a, Cybb). BPA altered DNA methylation and histone marks (H3Ac, H4Ac, H3Me2K4, H3Me3K36), and decreased the binding of several transcription factors (Pol II, C/EBPβ, SREBP1) within the male Cpt1a gene, the key β-oxidation enzyme. In PND1 females, BPA only increased the expression of genes involved in FFA uptake and TG synthesis (Lpl, Fasn, and Dgat). These data suggest that developmental BPA exposure alters and reprograms hepatic β-oxidation capacity in males, potentially through the epigenetic regulation of genes, and further alters the response to a HF diet.
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Affiliation(s)
- Rita S Strakovsky
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Huan Wang
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Nicki J Engeseth
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, USA
| | - William G Helferich
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Yuan-Xiang Pan
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA.
| | - Stéphane Lezmi
- Department of Pathobiology, University of Illinois Urbana-Champaign, USA.
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42
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Quesnot N, Bucher S, Fromenty B, Robin MA. Modulation of metabolizing enzymes by bisphenol a in human and animal models. Chem Res Toxicol 2014; 27:1463-73. [PMID: 25142872 DOI: 10.1021/tx500087p] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Xenobiotics, such as contaminants and drugs, can be converted to potentially toxic reactive metabolites by phase 1 oxidizing enzymes. These metabolites are further detoxified by phase 2 conjugating enzymes and eliminated from cells by phase 3 transporters. Moreover, many of these xenobiotics are also able to induce or inhibit these enzymes, potentially modulating their own toxicity or that of other chemicals. The present review is focused on bisphenol A, a synthetic monomer used for many industrial applications and exhibiting xenoestrogen properties. The impact of this contaminant on all major classes of metabolizing enzymes (i.e., cytochromes P450, glutathione-S-transferases, sulfotransferases, UDP-glucuronyltransferases, and transporters) was reviewed, with a highlight on the modulation of cytochromes P450 involved in steroid metabolism. Interestingly, most of the studies reported in this review show that BPA is able to induce or inhibit metabolizing enzymes at high doses but also at doses compatible with human exposure.
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43
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O'Hagan HM, Tang WY. Increased understanding of the impact of environmental exposures on the epigenome. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2014; 55:151-154. [PMID: 24339126 DOI: 10.1002/em.21843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 11/27/2013] [Accepted: 11/27/2013] [Indexed: 06/03/2023]
Affiliation(s)
- Heather M O'Hagan
- Medical Sciences Program, Indiana University School of Medicine, Bloomington, IN
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44
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Establishment of metabolism and transport pathways in the rodent and human fetal liver. Int J Mol Sci 2013; 14:23801-27. [PMID: 24322441 PMCID: PMC3876079 DOI: 10.3390/ijms141223801] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 11/25/2013] [Accepted: 11/26/2013] [Indexed: 12/16/2022] Open
Abstract
The ultimate fate of drugs and chemicals in the body is largely regulated by hepatic uptake, metabolism, and excretion. The liver acquires the functional ability to metabolize and transport chemicals during the perinatal period of development. Research using livers from fetal and juvenile rodents and humans has begun to reveal the timing, key enzymes and transporters, and regulatory factors that are responsible for the establishment of hepatic phase I and II metabolism as well as transport. The majority of this research has been limited to relative mRNA and protein quantification. However, the recent utilization of novel technology, such as RNA-Sequencing, and the improved availability and refinement of functional activity assays, has begun to provide more definitive information regarding the extent of hepatic drug disposition in the developing fetus. The goals of this review are to provide an overview of the early regulation of the major phase I and II enzymes and transporters in rodent and human livers and to highlight potential mechanisms that control the ontogeny of chemical metabolism and excretion pathways.
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