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Schrenk D, Bignami M, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, (Ron) Hoogenboom L, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Schwerdtle T, Wallace H, Benford D, Fürst P, Hart A, Rose M, Schroeder H, Vrijheid M, Ioannidou S, Nikolič M, Bordajandi LR, Vleminckx C. Update of the risk assessment of polybrominated diphenyl ethers (PBDEs) in food. EFSA J 2024; 22:e8497. [PMID: 38269035 PMCID: PMC10807361 DOI: 10.2903/j.efsa.2024.8497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024] Open
Abstract
The European Commission asked EFSA to update its 2011 risk assessment on polybrominated diphenyl ethers (PBDEs) in food, focusing on 10 congeners: BDE-28, -47, -49, -99, -100, -138, -153, -154, -183 and ‑209. The CONTAM Panel concluded that the neurodevelopmental effects on behaviour and reproductive/developmental effects are the critical effects in rodent studies. For four congeners (BDE-47, -99, -153, -209) the Panel derived Reference Points, i.e. benchmark doses and corresponding lower 95% confidence limits (BMDLs), for endpoint-specific benchmark responses. Since repeated exposure to PBDEs results in accumulation of these chemicals in the body, the Panel estimated the body burden at the BMDL in rodents, and the chronic intake that would lead to the same body burden in humans. For the remaining six congeners no studies were available to identify Reference Points. The Panel concluded that there is scientific basis for inclusion of all 10 congeners in a common assessment group and performed a combined risk assessment. The Panel concluded that the combined margin of exposure (MOET) approach was the most appropriate risk metric and applied a tiered approach to the risk characterisation. Over 84,000 analytical results for the 10 congeners in food were used to estimate the exposure across dietary surveys and age groups of the European population. The most important contributors to the chronic dietary Lower Bound exposure to PBDEs were meat and meat products and fish and seafood. Taking into account the uncertainties affecting the assessment, the Panel concluded that it is likely that current dietary exposure to PBDEs in the European population raises a health concern.
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Xue J, Xiao Q, Zhang M, Li D, Wang X. Toxic Effects and Mechanisms of Polybrominated Diphenyl Ethers. Int J Mol Sci 2023; 24:13487. [PMID: 37686292 PMCID: PMC10487835 DOI: 10.3390/ijms241713487] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/25/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023] Open
Abstract
Polybrominated diphenyl ethers (PBDEs) are a group of flame retardants used in plastics, textiles, polyurethane foam, and other materials. They contain two halogenated aromatic rings bonded by an ester bond and are classified according to the number and position of bromine atoms. Due to their widespread use, PBDEs have been detected in soil, air, water, dust, and animal tissues. Besides, PBDEs have been found in various tissues, including liver, kidney, adipose, brain, breast milk and plasma. The continued accumulation of PBDEs has raised concerns about their potential toxicity, including hepatotoxicity, kidney toxicity, gut toxicity, thyroid toxicity, embryotoxicity, reproductive toxicity, neurotoxicity, and immunotoxicity. Previous studies have suggested that there may be various mechanisms contributing to PBDEs toxicity. The present study aimed to outline PBDEs' toxic effects and mechanisms on different organ systems. Given PBDEs' bioaccumulation and adverse impacts on human health and other living organisms, we summarize PBDEs' effects and potential toxicity mechanisms and tend to broaden the horizons to facilitate the design of new prevention strategies for PBDEs-induced toxicity.
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Affiliation(s)
- Jinsong Xue
- School of Biology, Food and Environment, Hefei University, Hefei 230601, China; (Q.X.); (M.Z.); (D.L.)
| | | | | | | | - Xiaofei Wang
- School of Biology, Food and Environment, Hefei University, Hefei 230601, China; (Q.X.); (M.Z.); (D.L.)
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3
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Mechanisms of Male Reproductive Toxicity of Polybrominated Diphenyl Ethers. Int J Mol Sci 2022; 23:ijms232214229. [PMID: 36430706 PMCID: PMC9693139 DOI: 10.3390/ijms232214229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/08/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Polybrominated diphenyl ethers (PBDE) are a group of flame retardants used in a variety of artificial materials. Despite being phased out in most industrial countries, they remain in the environment and human tissues due to their persistence, lipophilicity, and bioaccumulation. Populational and experimental studies demonstrate the male reproductive toxicity of PBDEs including increased incidence of genital malformations (hypospadias and cryptorchidism), altered weight of testes and other reproductive tissues, altered testes histology and transcriptome, decreased sperm production and sperm quality, altered epigenetic regulation of developmental genes in spermatozoa, and altered secretion of reproductive hormones. A broad range of mechanistic hypotheses of PBDE reproductive toxicity has been suggested. Among these hypotheses, oxidative stress, the disruption of estrogenic signaling, and mitochondria disruption are affected by PBDE concentrations much higher than concentrations found in human tissues, making them unlikely links between exposures and adverse reproductive outcomes in the general population. Robust evidence suggests that at environmentally relevant doses, PBDEs and their metabolites may affect male reproductive health via mechanisms including AR antagonism and the disruption of a complex network of metabolic signaling.
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Huang S, Xia J, Zhang X, Zhou T, Wang J, Liu T, Xu S, Liang G. 2,2',4,4'-Tetrabromodiphenyl ether disrupts spermatogenesis in mice by interfering with the ER-Nrf1-Tfam-mitochondria pathway. Toxicol Ind Health 2022; 38:182-191. [PMID: 35238255 DOI: 10.1177/07482337221081206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
2,2',4,4' -tetrabromodiphenyl ether (BDE47), a well-known endocrine disruptor of the estrogen receptor (ER) is toxic to the mitochondria and spermatogenesis. This study aimed to explore the mechanism of BDE47 on spermatogenesis in mammals. Adult male Institute of Cancer Research (ICR) mice were gavaged daily with BDE47 (0, 1, or 10 mg/kg bw) for 8 weeks. Testicular weight, sperm production and motility, morphology of spermatogenic cells, nuclear respiratory factor 1 (Nrf1) level, and its expression in testes were determined. In vitro, cell viability, and key molecules in the ER-Nrf1-mitochondrial transcription factor A (Tfam)-mitochondria pathway in the immortalized mouse spermatogonia line (GC1) were determined at 48 h and 0-5 h after exposure; RNA interference (RNAi) was also performed to verify that the decreased Nrf1 was associated with mitochondrial dysfunction and the impaired viability of germ cells. The results indicated that BDE47 impaired testis weight and spermatogenesis, impaired mitochondria and germ cells, and decreased Nrf1 in the testes of mice. In vitro, after 48 h exposure, BDE47 reduced cell viability, Nrf1 protein, and mRNA of Nrf1, Tfam, ATP synthase subunit β (Atp5b), and cytochrome c oxidase subunit I (mt-CO1) in GC1 while also reducing mRNA of Nrf1 and Tfam promptly (from 1 to 5 h) after exposure. Furthermore, Nrf1 RNA interference decreased viability and mitochondrial function in GC1. These results indicated that BDE47 disrupts spermatogenesis in mice, probably by interfering with the ER-Nrf1-Tfam-mitochondria pathway, and Nrf1 is a target molecule of BDE47 estrogen receptor.
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Affiliation(s)
- Shaoping Huang
- Department of Histology and Embryology, Medical School, 12579Southeast University, Nanjing, China
| | - Jiangyan Xia
- Zhong Da Hospital, 12579Southeast University, Nanjing, China
| | - Xinxin Zhang
- Department of Histology and Embryology, Medical School, 12579Southeast University, Nanjing, China
| | - Tao Zhou
- Central Laboratory, Wuxi Maternity and Child Health Care Hospital affiliated to Nanjing Medical University, Nanjing, China
| | - Jing Wang
- Zhong Da Hospital, 12579Southeast University, Nanjing, China
| | - Tong Liu
- School of Public Health, 12579Southeast University, Nanjing, China
| | - Siyi Xu
- School of Public Health, 12579Southeast University, Nanjing, China
| | - Geyu Liang
- School of Public Health, 12579Southeast University, Nanjing, China
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5
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Dungar BM, Schupbach CD, Jacobson JR, Kopf PG. Adrenal Corticosteroid Perturbation by the Endocrine Disruptor BDE-47 in a Human Adrenocortical Cell Line and Male Rats. Endocrinology 2021; 162:6346795. [PMID: 34370853 PMCID: PMC8402933 DOI: 10.1210/endocr/bqab160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Indexed: 01/04/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) have been previously shown to alter various endocrine biosynthetic pathways. Growing epidemiological evidence suggests that PBDEs alter cardiovascular function. The goal of this study was to examine the effects of BDE-47 on adrenal corticosteroid pathways that play vital roles in cardiovascular homeostasis and pathophysiology. The effect of BDE-47 on aldosterone and cortisol secretion was characterized in a human adrenocortical cell line. HAC15 cells were exposed to various concentrations of BDE-47 (1 nM to 100 μM). Cell viability, corticosteroid secretion, gene expression of enzymes involved in corticosteroid synthesis, and metabolic activity was examined. Additionally, Sprague Dawley male rats were orally exposed to BDE-47 (10 or 100 µg/kg), 5 days per week for 16 weeks. Organ weights and plasma corticosteroid levels were measured. In HAC15 cells, basal and stimulated aldosterone and cortisol secretion was significantly increased by BDE-47. Gene expression of several enzymes involved in corticosteroid synthesis and mitochondrial metabolism also increased. In Sprague Dawley rats, adrenal but not heart, kidney, or liver weights, were significantly increased in BDE-47 treatment groups. Plasma corticosterone levels were significantly increased in the 100 µg BDE-47/kg treatment group. No change in plasma aldosterone levels were observed with BDE-47 exposure. These data indicate that BDE-47 disrupts the regulation of corticosteroid secretion and provides further evidence that PBDEs are potential endocrine disruptors. Future studies will determine the underlying molecular mechanism of altered corticosteroid production and examine whether these alterations result in underlying cardiovascular disease in our rodent model of 16-week BDE-47 exposure.
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Affiliation(s)
- Benjamin M Dungar
- Department of Pharmacology, College of Graduate Studies, Midwestern University, Downers Grove, IL 60515, USA
| | - Chad D Schupbach
- Department of Pharmacology, College of Graduate Studies, Midwestern University, Downers Grove, IL 60515, USA
| | - Jessie R Jacobson
- Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL 60515, USA
| | - Phillip G Kopf
- Department of Pharmacology, College of Graduate Studies, Midwestern University, Downers Grove, IL 60515, USA
- Correspondence: Phillip G. Kopf, PhD, Department of Pharmacology, Midwestern University, 555 31st Street, Downers Grove, IL 60515, USA.
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Sun S, Zhao Z, Rao Q, Li X, Ruan Z, Yang J. BDE-47 induces nephrotoxicity through ROS-dependent pathways of mitochondrial dynamics in PK15 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 222:112549. [PMID: 34325200 DOI: 10.1016/j.ecoenv.2021.112549] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
2,2',4,4'-tetrabromodiphenyl ether (BDE-47)-induced nephrotoxicity is closely associated with oxidative stresses and mitochondrial abnormalities. Mitochondrial fusion and fission dynamics are crucial for maintaining mitochondrial and cellular physiological homeostasis. However, the detailed mechanisms through which BDE-47 disrupts this dynamic and contributes to renal injuries are still not fully understood. The porcine kidney-15 (PK15) cell line, a well-defined in vitro animal renal toxicological model, was exposed to BDE-47 with concentrations of 12.5, 25, 50, and 100 μM, respectively. Cell viability, the levels of reactive oxygen species (ROS) and adenosine triphosphate (ATP), the mitochondrial membrane potential (MMP), and the expression levels of key mitochondrial fusion and fission proteins were assessed. BDE-47 reduced cell viability and disrupted mitochondrial dynamics by inhibiting mitochondrial fusion and fission simultaneously, leading to MMP decreases, ROS overgeneration, ATP depletion, and cellular disintegration in a dose-dependent manner. Additionally, the mitochondrial division inhibitor (Mdivi-1) with the concentration of 20 μM observed to restore the downregulation of mitochondrial fusion and fission proteins, alleviate damages in mitochondrial morphology and functionality, correct ROS overproduction, and enable cell survival. The antioxidant N-acety-L-cysteine (NAC) with the concentration of 1 mM also simultaneously reversed the imbalance of mitochondrial dynamics, decreased ROS production, and restored mitochondrial morphology in PK15 cells exposed to BDE-47. Our data provide new insights indicating that BDE-47 disrupts mitochondrial fusion/fission dynamics to induce mitochondrial abnormalities, triggering oxidative stresses and thus contributing to PK15 cell dysfunction. ROS-dependent pathways in mitochondrial dynamics may provide a new avenue for developing effective strategies to protect cells against BDE-47-induced nephrotoxicity.
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Affiliation(s)
- Shiyao Sun
- Institute for Agri-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Zhihui Zhao
- Institute for Agri-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Qinxiong Rao
- Institute for Agri-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - XiaoMin Li
- Institute of Quality Standard and Testing Technology for Agro-Products, The Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Zheng Ruan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Junhua Yang
- Institute for Agri-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
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7
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Li X, Gao H, Li P, Chen W, Tang S, Liu L, Zhou G, Xia T, Wang A, Zhang S. Impaired sperm quantity and motility in adult rats following gestational and lactational exposure to environmentally relevant levels of PBDE-47: A potential role of thyroid hormones disruption. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115773. [PMID: 33065364 DOI: 10.1016/j.envpol.2020.115773] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 09/13/2020] [Accepted: 10/01/2020] [Indexed: 06/11/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) are flame retardants and the congener 2, 2', 4, 4'-tetrabromodiphenyl ether (PBDE-47) is capable of inducing thyroid endocrine disruption and developmental toxicity. However, little is known about whether developmental PBDE-47 exposure-elicited alterations in semen quality is associated with thyroid hormones (THs) perturbation. In this research, we sought to explore the impacts of gestational and lactational PBDE-47 exposure on adult sperm quantity and motility, and its link with THs levels. For this purpose, female Sprague-Dawley rats were administered environmentally relevant PBDE-47 levels (0.1, 1.0, 10 mg/kg/day) by oral gavage from prepregnancy through lactation cessation to achieve early-life exposure of offspring and to mimic the actual exposure. Sperm quantity and motility together with serum THs levels from male offspring were determined on postnatal day 88. In utero and lactational exposure to PBDE-47 boosted the weight gain while reduced the relative testis weight in adult male offspring. These were accompanied with the reductions in sperm counts (total and living sperm counts), the percentage of progressive sperm motility, sperm velocities (curvilinear velocity, straight-line velocity and average path velocity), motion path (beat cross frequency, linearity and wobble) and linear motile sperm parameters (count, motility and concentration). Further studies identified that the levels of serum triiodothyronine (T3) were increased by PBDE-47 exposure and negatively associated with those differential semen parameters on quantity and motility. Collectively, our results indicate that exposure to low-level PBDE-47 during early-life development impairs semen quality in adult rats, which could be mediated partially by abnormal T3 levels.
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Affiliation(s)
- Xiaoning Li
- Department of Occupational and Environmental Health, MOE Key Laboratory of Environment and Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China
| | - Hui Gao
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China
| | - Pei Li
- Department of Occupational and Environmental Health, MOE Key Laboratory of Environment and Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China
| | - Wei Chen
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, China
| | - Sha Tang
- Department of Environment and Health, Xiangxi Center for Disease Control and Prevention, 37 South Renmin Road, Jishou, China
| | - Luming Liu
- Department of Occupational and Environmental Health, MOE Key Laboratory of Environment and Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China
| | - Guoyu Zhou
- Department of Occupational and Environmental Health, MOE Key Laboratory of Environment and Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China
| | - Tao Xia
- Department of Occupational and Environmental Health, MOE Key Laboratory of Environment and Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China
| | - Aiguo Wang
- Department of Occupational and Environmental Health, MOE Key Laboratory of Environment and Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China
| | - Shun Zhang
- Department of Occupational and Environmental Health, MOE Key Laboratory of Environment and Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, China.
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8
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Zeng J, Tao J, Xia L, Zeng Z, Chen J, Wang Z, Meng J, Liu L. Melatonin inhibits vascular endothelial cell pyroptosis by improving mitochondrial function via up-regulation and demethylation of UQCRC1. Biochem Cell Biol 2020; 99:339-347. [PMID: 33332241 DOI: 10.1139/bcb-2020-0279] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Atherosclerosis (AS) is a chronic inflammatory disease that involves cell death and endothelial dysfunction. Melatonin is an endocrine hormone with anti-inflammatory and anti-AS effects. However, the underlying molecular mechanisms for the anti-AS effects of melatonin are unknown. A previous study has shown that pyroptosis plays a detrimental role in the development of AS, therefore, this study was designed to investigate the anti-pyroptotic effects and potential mechanisms of melatonin in atherosclerotic endothelium. Our results show that melatonin attenuated the expression of genes related to pyroptosis, including NLRP3, caspase-1, and IL-1β, in human umbilical vein endothelial cells treated with oxidized low-density lipoprotein. Furthermore, melatonin up-regulated the expression of ten-eleven translocation 2 (TET2), inhibited the methylation of ubiquinol-cytochrome c reductase core protein 1 (UQCRC1), and reduced pyroptosis. The up-regulation of UQCRC1 by melatonin improved mitochondrial function, thereby inhibiting oxidative stress and endothelial cell pyroptosis. Collectively, our results indicate that melatonin prevents endothelial cell pyroptosis by up-regulating TET2 to inhibit the methylation of UQCRC1 and improving mitochondrial function.
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Affiliation(s)
- Junfa Zeng
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China.,The Second Affiliated Hospital of University of South China, Hengyang, China
| | - Jun Tao
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Linzhen Xia
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Zhaolin Zeng
- Department of Cardiology, People's Hospital of Nanchuan, Chongqing Medical University, Chongqing 408499, China
| | - Jiaojiao Chen
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Zuo Wang
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Jun Meng
- Functional Department, the First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, China
| | - Lushan Liu
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
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9
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Cao S, Huang S, Guo Y, Zhou L, Lu Y, Lai S. Proteomic-based identification of oocyte maturation-related proteins in mouse germinal vesicle oocytes. Reprod Domest Anim 2020; 55:1607-1618. [PMID: 32920902 DOI: 10.1111/rda.13819] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022]
Abstract
Oocyte proteins play an important role in oocyte maturation, fertilization and embryonic development. However, the protein composition of mouse germinal vesicle (GV) oocytes is still unclear. Using one-dimensional Sodium Dodecyl Sulphate Polyacrylamide Gel Electrophoresis (1D SDS-PAGE) and Reverse-phase liquid chromatography tandem mass spectrometry (RP-LC-MS/MS), we constructed a protein profile of mouse GV oocytes. First, our proteomics profile identified 1,405 different proteins from 11,000 mouse GV oocytes lacking zona pellucida. Second, with detailed bioinformatics analysis, a group of proteins that play an essential role in oocyte maturation was screened. In addition, the expression and localization of suppressor of G2 allele of skp1(SUGT1, also called SGT1), heterogeneous nuclear ribonucleoprotein K (Hnrpk), Seruin, Cullin1(Clu1) and nuclear distribution protein C (Nudc) in mouse ovaries and early embryos were also captured and investigated in this study. Moreover, the protein profile was submitted to the Proteomics Identifications Database (PRIDE) and is available via ProteomeXchange with the identifier PXD014314. Our research provides valuable resources for the study of oocyte proteins and oocyte maturation and helps to clarify the mechanisms of oocyte maturation.
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Affiliation(s)
- Senyang Cao
- Center of Reproductive Medicine, Huai'an Maternity and Child Health Care Center, Huai'an, China.,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Shaoping Huang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China.,Department of Histology and Embryology, Medical School, Southeast University, Nanjing, China
| | - Ying Guo
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Lin Zhou
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Ying Lu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Shanshan Lai
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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10
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Sun MH, Li XH, Xu Y, Xu Y, Sun SC. Exposure to PBDE47 affects mouse oocyte quality via mitochondria dysfunction-induced oxidative stress and apoptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 198:110662. [PMID: 32339927 DOI: 10.1016/j.ecoenv.2020.110662] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/06/2020] [Accepted: 04/17/2020] [Indexed: 05/15/2023]
Abstract
2, 2', 4, 4'-Tetrabrominated diphenyl ether (PBDE47) is the most abundant homologues in polybrominated diphenyl ethers (PBDEs) and is used widely in daily life as a brominated flame retardant. It has been shown that PBDE47 has neurotoxicity, thyroid toxicity, and also is reported to have reproductive toxicity, which can impair the follicular function of female rats and activate ovarian endoplasmic reticulum stress, leading to ovarian damage. However, the toxicity of PBDE47 to the quality of mammalian oocyte has not been reported. In this study, we reported that PBDE47 exposure affected the mouse ovarian and uterine. We also showed that oocyte number reduced and meiotic maturation competence decreased. Moreover, PBDE47 exposure disrupted actin filaments distribution, and also changed the level of histone methylation. Based on the genome-wide sequencing we showed that PBDE47 altered multiple gene expression in mouse oocytes. PBDE47 exposure caused mitochondria dysfunction, showing with aberrant distribution and mitochondrial membrane potential. In addition, our results suggested that PBDE47 induced early apoptosis, which was caused by oxidative stress, showing with increased ROS level and positive Annexin-V signal. In conclusion, our results indicated that PBDE47 exposure affected the maturation of mouse oocyte via its effects on mitochondria function, ROS level and its related apoptosis.
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Affiliation(s)
- Ming-Hong Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiao-Han Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yao Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yi Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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11
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Wang Q, Li M, Gan Y, Jiang S, Qiao J, Zhang W, Fan Y, Shen Y, Song Y, Meng Z, Yao M, Gu J, Zhang Z, Tu H. Mitochondrial Protein UQCRC1 is Oncogenic and a Potential Therapeutic Target for Pancreatic Cancer. Theranostics 2020; 10:2141-2157. [PMID: 32089737 PMCID: PMC7019160 DOI: 10.7150/thno.38704] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 11/24/2019] [Indexed: 12/17/2022] Open
Abstract
Purpose: Pancreatic ductal adenocarcinoma (PDAC) is a malignant disease with a poor prognosis. One prominent aspect of PDAC that contributes to its aggressive behavior is its altered cellular metabolism. The aim of this study was to characterize the oncogenic effects of ubiquinol-cytochrome c reductase core protein I (UQCRC1), a key component of mitochondrial complex III, in PDAC development and to assess its potential as a therapeutic target for PDAC. Experimental Design: The expression of UQCRC1 in human PDAC tissues and p48-Cre/p53Flox/WT/LSL-KrasG12D (KPC) mouse pancreatic intraepithelial neoplasias (PanINs) was determined by immunohistochemistry. The role of UQCRC1 in promoting PDAC growth was evaluated in vitro in PANC-1 and CFPAC-1 cells and in vivo in transplanted mouse models of PDAC. Extracellular flux and RNA-Seq analyses were applied to investigate the mechanism of UQCRC1 in the regulation of mitochondrial metabolism and PDAC cell growth. The therapeutic potential of UQCRC1 in PDAC was assessed by knockdown of UQCRC1 using an RNA interference approach. Results: UQCRC1 expression showed a gradual increase during the progression from PanIN stages to PDAC in KPC mice. Elevated expression of UQCRC1 was observed in 72.3% of PDAC cases and was correlated with poor prognosis of the disease. UQCRC1 promoted PDAC cell growth in both in vitro experiments and in vivo subcutaneous and orthotopic mouse models. UQCRC1 overexpression resulted in increased mitochondrial oxidative phosphorylation (OXPHOS) and ATP production. The overproduced ATP was released into the extracellular space via the pannexin 1 channel and then functioned as an autocrine or paracrine agent to promote cell proliferation through the ATP/P2Y2-RTK/AKT axis. UQCRC1 knockdown or ATP release blockage could effectively inhibit PDAC growth. Conclusion: UQCRC1 has a protumor function and may serve as a potential prognostic marker and therapeutic target for PDAC.
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12
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Wang L, Cheng B, Li H, Wang Y. Proteomics analysis of preadipocytes between fat and lean broilers. Br Poult Sci 2019; 60:522-529. [PMID: 31132862 DOI: 10.1080/00071668.2019.1621989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
1. Reducing excessive chicken body fat deposition is a main goal of the poultry industry. Preadipocytes are important in adipose tissue growth and development. 2. To discover proteins related to chicken fat deposition, two-dimensional fluorescence difference gel electrophoresis (2-D DIGE) was used to identify differentially expressed proteins in preadipocytes derived from Northeast Agricultural University broiler lines divergently selected for abdominal fat content (NEAUHLF). 3. A total of 46 differentially expressed protein spots were found in the preadipocytes between fat and lean broilers. Matrix-assisted laser desorption-ionisation time-of-flight mass spectrometry (MALDI-TOF-MS) analysis showed the protein spots corresponded to 33 different proteins. The proteins were mainly related to biological oxidation, cell proliferation, cytoskeleton, lipid metabolism, molecular chaperone, protein synthesis and signal transduction. 4. From the perspective of protein expression, these results lay a foundation for further study of the genetic mechanism of broiler adipose tissue growth and development.
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Affiliation(s)
- L Wang
- Ministry of Agriculture and Rural Affairs, Key Laboratory of Chicken Genetics and Breeding , Harbin , P. R. China.,Department of Education of Heilongjiang Province, Key Laboratory of Animal Genetics, Breeding and Reproduction , Harbin , P. R. China.,College of Animal Science and Technology, Northeast Agricultural University , Harbin , P. R. China
| | - B Cheng
- Ministry of Agriculture and Rural Affairs, Key Laboratory of Chicken Genetics and Breeding , Harbin , P. R. China.,Department of Education of Heilongjiang Province, Key Laboratory of Animal Genetics, Breeding and Reproduction , Harbin , P. R. China.,College of Animal Science and Technology, Northeast Agricultural University , Harbin , P. R. China
| | - H Li
- Ministry of Agriculture and Rural Affairs, Key Laboratory of Chicken Genetics and Breeding , Harbin , P. R. China.,Department of Education of Heilongjiang Province, Key Laboratory of Animal Genetics, Breeding and Reproduction , Harbin , P. R. China.,College of Animal Science and Technology, Northeast Agricultural University , Harbin , P. R. China
| | - Y Wang
- Ministry of Agriculture and Rural Affairs, Key Laboratory of Chicken Genetics and Breeding , Harbin , P. R. China.,Department of Education of Heilongjiang Province, Key Laboratory of Animal Genetics, Breeding and Reproduction , Harbin , P. R. China.,College of Animal Science and Technology, Northeast Agricultural University , Harbin , P. R. China
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13
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Chasapis CT, Makridakis M, Damdimopoulos AE, Zoidakis J, Lygirou V, Mavroidis M, Vlahou A, Miranda-Vizuete A, Spyrou G, Vlamis-Gardikas A. Implications of the mitochondrial interactome of mammalian thioredoxin 2 for normal cellular function and disease. Free Radic Biol Med 2019; 137:59-73. [PMID: 31018154 DOI: 10.1016/j.freeradbiomed.2019.04.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 04/15/2019] [Indexed: 12/23/2022]
Abstract
Multiple thioredoxin isoforms exist in all living cells. To explore the possible functions of mammalian mitochondrial thioredoxin 2 (Trx2), an interactome of mouse Trx2 was initially created using (i) a monothiol mouse Trx2 species for capturing protein partners from different organs and (ii) yeast two hybrid screens on human liver and rat brain cDNA libraries. The resulting interactome consisted of 195 proteins (Trx2 included) plus the mitochondrial 16S RNA. 48 of these proteins were classified as mitochondrial (MitoCarta2.0 human inventory). In a second step, the mouse interactome was combined with the current four-membered mitochondrial sub-network of human Trx2 (BioGRID) to give a 53-membered human Trx2 mitochondrial interactome (52 interactor proteins plus the mitochondrial 16S RNA). Although thioredoxins are thiol-employing disulfide oxidoreductases, approximately half of the detected interactions were not due to covalent disulfide bonds. This finding reinstates the extended role of thioredoxins as moderators of protein function by specific non-covalent, protein-protein interactions. Analysis of the mitochondrial interactome suggested that human Trx2 was involved potentially in mitochondrial integrity, formation of iron sulfur clusters, detoxification of aldehydes, mitoribosome assembly and protein synthesis, protein folding, ADP ribosylation, amino acid and lipid metabolism, glycolysis, the TCA cycle and the electron transport chain. The oxidoreductase functions of Trx2 were verified by its detected interactions with mitochondrial peroxiredoxins and methionine sulfoxide reductase. Parkinson's disease, triosephosphate isomerase deficiency, combined oxidative phosphorylation deficiency, and lactate dehydrogenase b deficiency are some of the diseases where the proposed mitochondrial network of Trx2 may be implicated.
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Affiliation(s)
- Christos T Chasapis
- Institute of Chemical Engineering Sciences (ICE-HT), Foundation for Research and Technology, Hellas (FORTH), Platani 26504, Greece
| | | | - Anastassios E Damdimopoulos
- Department of Biosciences and Nutrition, Center for Innovative Medicine (CIMED), Karolinska Institutet, Huddinge, Sweden
| | - Jerome Zoidakis
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Vasiliki Lygirou
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Manolis Mavroidis
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Antonia Vlahou
- Biomedical Research Foundation, Academy of Athens (BRFAA), Athens, Greece
| | - Antonio Miranda-Vizuete
- Redox Homeostasis Group, Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013 Sevilla, Spain
| | - Giannis Spyrou
- Department of Clinical and Experimental Medicine, Division of Clinical Chemistry, Linköping University, S-581 85 Linköping, Sweden
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14
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Espinosa Ruiz C, Manuguerra S, Cuesta A, Esteban MA, Santulli A, Messina CM. Sub-lethal doses of polybrominated diphenyl ethers affect some biomarkers involved in energy balance and cell cycle, via oxidative stress in the marine fish cell line SAF-1. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 210:1-10. [PMID: 30797971 DOI: 10.1016/j.aquatox.2019.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/18/2019] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) are a class of persistent contaminants which are found all over the world in the marine environment. Sparus aurata fibroblast cell line (SAF-1) was exposed to increasing concentrations of PBDEs 47 and 99, until 72 h to evaluate the cytotoxicity, reactive oxygen species (ROS) production and the expression of some selected molecular markers related to cell cycle, cell signaling, energetic balance and oxidative stress (p53, erk-1, hif-1α and nrf-2), by real-time PCR. Furthermore, SAF-1 cells were exposed for 7 and 15 days to sub-lethal concentrations, in order to evaluate the response of some biomarkers by immunoblotting (p53, ERK-1, AMPK, HIF-1α and NRF-2). After 48 and 72 h, the cells showed a significant decrease of cell vitality as well as an increase of intracellular ROS production. Gene expression analysis showed that sub-lethal concentrations of BDE-99 and 47, after 72 h, up-regulated cell cycle and oxidative stress biomarkers, although exposure to 100 μmol L-1 down-regulated the selected markers related to cell cycle, cell signaling, energetic balance. After 7 and 15 days of sub-lethal doses exposure, all the analyzed markers resulted affected by the contaminants. Our results suggest that PBDEs influence the cells homeostasis first of all via oxidative stress, reducing the cell response and defense capacity and affecting its energetic levels. This situation of stress and energy imbalance could represents a condition that, modifying some of the analyzed biochemical pathways, would predispose to cellular transformation.
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Affiliation(s)
- Cristobal Espinosa Ruiz
- University of Palermo, Dept of Earth and Marine Science DISTEM, Laboratory of Marine Biochemistry and Ecotoxicology, Via Barlotta 4, 91100, Trapani, Italy
| | - Simona Manuguerra
- University of Palermo, Dept of Earth and Marine Science DISTEM, Laboratory of Marine Biochemistry and Ecotoxicology, Via Barlotta 4, 91100, Trapani, Italy
| | - Alberto Cuesta
- Fish Innate Immune System Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100, Murcia, Spain
| | - Maria Angeles Esteban
- Fish Innate Immune System Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100, Murcia, Spain
| | - Andrea Santulli
- University of Palermo, Dept of Earth and Marine Science DISTEM, Laboratory of Marine Biochemistry and Ecotoxicology, Via Barlotta 4, 91100, Trapani, Italy; Consorzio Universitario della Provincia di Trapani, Marine Biology Institute, Via Barlotta 4, 91100, Trapani, Italy
| | - Concetta M Messina
- University of Palermo, Dept of Earth and Marine Science DISTEM, Laboratory of Marine Biochemistry and Ecotoxicology, Via Barlotta 4, 91100, Trapani, Italy.
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15
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Li W, Wubulikasimu G, Zhao X, Wang C, Liu R, Wang L, Zhu X, Chen Z. UQCRC1 downregulation is correlated with lymph node metastasis and poor prognosis in CRC. Eur J Surg Oncol 2019; 45:1005-1010. [PMID: 30842031 DOI: 10.1016/j.ejso.2019.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/10/2019] [Accepted: 02/19/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Mitochondrial dysfunction is common in cancer. UQCRC1 is a nuclear-encoded protein localized to the inner mitochondrial membrane; however, little is known about it in colorectal cancer (CRC). The purpose of this study was to investigate the expression pattern and the possible clinical significance of UQCRC1 in CRC. METHODS A total of 197 patients with CRC were enrolled in this study. Immunohistochemistry was used to evaluate the expression pattern of UQCRC1. The relationship between UQCRC1 and clinical characteristics, especially lymph node metastasis, was also assessed. In addition, we evaluated the significance of UQCRC1 in the prognosis for CRC patients. RESULTS UQCRC1 was downregulated in 28.9% (57/197) of human CRCs. Downregulation of UQCRC1 was correlated with increased lymph node metastasis (p < 0.001) and decreased disease-free survival (DFS) and overall survival (OS). Multivariate analysis revealed that downregulation of UQCRC1 was an independent prognostic factor both for DFS (HR 3.009; 95% CI: 1.613-8.548, P = 0.009) and OS (HR 4.062; 95% CI: 2.835-8.910, P = 0.001). In addition, downregulation of UQCRC1 was correlated with increased VEGF-C expression (P = 0.002). CONCLUSION UQCRC1 was downregulated in human CRC. Downregulation of UQCRC1 was correlated with increased lymph node metastasis and finally associated with decreased survival in CRC.
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Affiliation(s)
- Wenhua Li
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai, 200032, China
| | - Gulinaizaier Wubulikasimu
- Department of Oncology, Kashgar Prefecture Second People's Hospital of Kashi, 844000, Xinjiang, China
| | - Xiaoying Zhao
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai, 200032, China
| | - Chenchen Wang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai, 200032, China
| | - Rujiao Liu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai, 200032, China
| | - Lei Wang
- Department of Oncology, Kashgar Prefecture Second People's Hospital of Kashi, 844000, Xinjiang, China.
| | - Xiaodong Zhu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai, 200032, China.
| | - Zhiyu Chen
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai, 200032, China; Department of Oncology, Kashgar Prefecture Second People's Hospital of Kashi, 844000, Xinjiang, China.
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16
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Manuguerra S, Espinosa Ruiz C, Santulli A, Messina CM. Sub-lethal Doses of Polybrominated Diphenyl Ethers, in Vitro, Promote Oxidative Stress and Modulate Molecular Markers Related to Cell Cycle, Antioxidant Balance and Cellular Energy Management. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16040588. [PMID: 30781636 PMCID: PMC6406823 DOI: 10.3390/ijerph16040588] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/12/2019] [Accepted: 02/14/2019] [Indexed: 01/08/2023]
Abstract
In the present study, we evaluated the effects of different concentrations of the polybrominated diphenyl ethers (PBDEs) BDE-209, BDE-47 and BDE-99, on the vitality and oxidative stress of a HS-68 human cell culture exposed to the compounds for three days. The results showed that for this exposure time, only the highest concentrations produced a significant vitality reduction and oxidative stress induction (p < 0.05), measured as reactive oxygen species (ROS). Subsequently, in order to verify the effects of sub-lethal doses, cells were exposed for a longer time and data collected, after 12 and 20 days, to study ROS production and some molecular markers related to cell cycle and stress (p53, pRB, PARP, c-Jun and c-Fos), antioxidant status and proliferation (ERK, c-Jun and c-Fos), energy balance (NRF2, AMPK, HIF). Most of the biomarkers were influenced by the treatments, indicating that sub-lethal doses of PBDEs, for longer time, can enhance the production of ROS, altering the energetic metabolism, cell cycle and antioxidant balance, determining possible negative effects on the cell proliferation equilibrium.
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Affiliation(s)
- Simona Manuguerra
- Department of Earth and Sea Science, Laboratory of Marine Biochemistry and Ecotoxicology, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy.
| | - Cristóbal Espinosa Ruiz
- Department of Earth and Sea Science, Laboratory of Marine Biochemistry and Ecotoxicology, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy.
| | - Andrea Santulli
- Department of Earth and Sea Science, Laboratory of Marine Biochemistry and Ecotoxicology, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy.
- Marine Biology Institute, Consorzio Universitario della Provincia di Trapani, Via Barlotta 4, 91100 Trapani, Italy.
| | - Concetta Maria Messina
- Department of Earth and Sea Science, Laboratory of Marine Biochemistry and Ecotoxicology, University of Palermo, Via Barlotta 4, 91100 Trapani, Italy.
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17
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Shan A, Li M, Li X, Li Y, Yan M, Xian P, Chang Y, Chen X, Tang NJ. BDE-47 Decreases Progesterone Levels in BeWo Cells by Interfering with Mitochondrial Functions and Genes Related to Cholesterol Transport. Chem Res Toxicol 2019; 32:621-628. [PMID: 30714368 DOI: 10.1021/acs.chemrestox.8b00312] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs) have been reported to exert reproductive endocrine toxicity, but the mechanisms for this process remain unclear. Currently available studies have concentrated on the enzymatic reactions during steroidogenesis, but the results are not consistent. In this study, we explored the effects of 2,2',4,4'-tertrabromodiphenyl ether (BDE-47) on progesterone biosynthesis and the potential mechanisms in human placental choriocarcinoma cells. The results showed that BDE-47 decreased progesterone production in a dose-dependent manner but had no effect on key enzymes (Cyp11a1 and 3β-HSD). BDE-47 exposure depolarized the mitochondrial membrane potential and downregulated adenosine triphosphate levels. The gene expression levels of Mfn2, Tspo, Atad3, Vdac1, Fis1, and Drp1, which are involved in mitochondrial dynamics and cholesterol transport, were disturbed. The demethylation of some CpG loci of mitochondrial biomarkers (Drp1, Opa1, Vdac2, and Atad3) was induced in the 1 μM BDE-47 exposure group, but no methylation change was observed with 50 μM treatment. Our findings unveiled that the reduction of progesterone synthesis induced by BDE-47 might be associated with cholesterol transportation, mitochondrial dynamics, and mitochondrial functions. These findings provide substantial data on the reproductive endocrine toxicity of PBDEs.
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Affiliation(s)
- Anqi Shan
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
| | - Mengxue Li
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
| | - Xuejun Li
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
| | - Yaoyan Li
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
| | - Mengfan Yan
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
| | - Ping Xian
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
| | - Ying Chang
- Department of Prenatal Diagnoses , Tianjin Center Hospital of Obstetrics and Gynecology , Tianjin 300000 , China
| | - Xi Chen
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
| | - Nai-Jun Tang
- Department of Occupational and Environmental Health, School of Public Health , Tianjin Medical University , Tianjin 300070 , China.,Tianjin Key Laboratory of Environment, Nutrition, and Public Health , Tianjin Medical University , Tianjin 300070 , China
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Oxidative Stress, Induced by Sub-Lethal Doses of BDE 209, Promotes Energy Management and Cell Cycle Modulation in the Marine Fish Cell Line SAF-1. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16030474. [PMID: 30736298 PMCID: PMC6388118 DOI: 10.3390/ijerph16030474] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/01/2019] [Accepted: 02/02/2019] [Indexed: 12/26/2022]
Abstract
The effects of sub-lethal doses of polybrominated diphenyl ether (PBDE)-209 in terms of toxicity, oxidative stress, and biomarkers were evaluated in the Sparus aurata fibroblast cell line (SAF-1). Vitality and oxidative stress status were studied after incubation with PBDE for 72 h. Concomitantly, the quantification of proteins related to cell cycle and DNA repair (p53), cell proliferation (extracellular signal–regulated kinase 1 (ERK1)), energetic restriction (hypoxia-inducible factor 1 (HIF1)), and redox status (Nuclear factor erythroid 2–related factor 2 (NRF2)) was also determined after prolonged exposure (7–15 days) by immunoblotting. Our results demonstrated that rising concentrations of PBDEs exposure-induced oxidative stress, and that this event modulates different cell pathways related to cell cycle, cell signaling, and energetic balance in the long term, indicating the negative impact of sub-lethal dose exposure to cell homeostasis.
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You X, Xi J, Liu W, Cao Y, Tang W, Zhang X, Yu Y, Luan Y. 2,2',4,4'-tetrabromodiphenyl ether induces germ cell apoptosis through oxidative stress by a MAPK-mediated p53-independent pathway. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:887-893. [PMID: 30041162 DOI: 10.1016/j.envpol.2018.07.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 07/09/2018] [Accepted: 07/13/2018] [Indexed: 06/08/2023]
Abstract
2,2',4,4'-Tetrabromodiphenyl ether (BDE-47), a representative congener of polybrominated diphenyl ethers in the environment, is known to have reproductive toxicity. However, the underlying mechanisms remain to be clarified, especially in in vivo systems. In the present study, we employed Caenorhabditis elegans to study the effects of BDE-47 on reproduction. Our results showed that BDE-47 impaired worm fecundity and induced germ cell apoptosis. To elucidate the mechanisms, DNA damage and oxidative stress induction were investigated by determining the numbers of foci formation in transgenic worms expressing HUS-1::GFP and the levels of reactive oxygen species, respectively. We found that BDE-47 induced oxidative stress but not DNA damage, and treatment with the antioxidant, N-acetyl-L-cysteine, completely abrogated BDE-47-induced germ cell apoptosis. In addition, the apoptosis was blocked in mutants carrying mek-1, sek-1 or abl-1 loss-of-function alleles, but not in the p53/cep-1 deficient worms, suggesting that the mitogen-activated protein kinase (MAPK) signaling cascade was essential for BDE-47-induced germ cell apoptosis and p53/cep-1 was not required. Moreover, the apoptosis in the strains deficient for DNA damage response was not suppressed under BDE-47 treatment. Overall, we demonstrated that BDE-47 could induce oxidative stress and subsequent germ cell apoptosis in Caenorhabditis elegans through a MAPK-mediated p53-independent pathway.
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Affiliation(s)
- Xinyue You
- Hongqiao International Institute of Medicine, Shanghai Tong Ren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Jing Xi
- Hongqiao International Institute of Medicine, Shanghai Tong Ren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Weiying Liu
- Hongqiao International Institute of Medicine, Shanghai Tong Ren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Yiyi Cao
- Hongqiao International Institute of Medicine, Shanghai Tong Ren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Weifeng Tang
- Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
| | - Xinyu Zhang
- Hongqiao International Institute of Medicine, Shanghai Tong Ren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Yingxin Yu
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangdong, 510006, China.
| | - Yang Luan
- Hongqiao International Institute of Medicine, Shanghai Tong Ren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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Huang S, Cao S, Zhou T, Kong L, Liang G. 4-tert-octylphenol injures motility and viability of human sperm by affecting cAMP-PKA/PKC-tyrosine phosphorylation signals. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 62:234-243. [PMID: 30098580 DOI: 10.1016/j.etap.2018.07.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 07/14/2018] [Accepted: 07/18/2018] [Indexed: 06/08/2023]
Abstract
4-tert-octylphenol (4t-OP) is a well-known xenoestrogen. Our objective was to explore the effects and molecular mechanisms of 4t-OP on human sperm. Sperm samples were exposed to 0, 0.1, or 0.3 mM 4t-OP for two hours. Results showed that both sperm viability and motility were significantly injured by 0.3 mM 4t-OP. We applied comparative proteomics to explore the molecular targets affected by 4t-OP. 81 differentially expressed (DE) proteins were identified. Bioinformatic analysis showed that these proteins were highly associated with motility and apoptosis, and were mostly enriched in cAMP-PKA/PKC-phosphorylation-associated pathway. We further verified that 0.1 mM and 0.3 mM 4t-OP significantly decreased cAMP activity of sperm. Expression of RACK1 and PRDX6 were detected by western blot (WB) to verify their tendencies in gels; antiapoptotic factor BCL2 was also detected by WB. The data indicated that 4-tert-octylphenol injures the motility and viability of human sperm probably by affecting cAMP-PKA/PKC-tyrosine phosphorylation signals.
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Affiliation(s)
- Shaoping Huang
- Department of Histology and Embryology, Medical School, Southeast University, Nanjing 210009, Jiangsu, China; State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, Jiangsu, China.
| | - Senyang Cao
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, Jiangsu, China; Center of Reproductive Medicine, Yancheng Maternity and Child Health Care Hospital, Yancheng 224002, Jiangsu, China
| | - Tao Zhou
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, Jiangsu, China; Central Laboratory, Wuxi Maternity and Child Health Care Hospital affiliated to Nanjing Medical University 214002, Jiangsu, China
| | - Lu Kong
- School of Public Health, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Geyu Liang
- School of Public Health, Southeast University, Nanjing, 210009, Jiangsu, China
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An T, Wang YF, Liu JX, Pan YY, Liu YF, He ZC, Mo FF, Li J, Kang LH, Gu YJ, Lv BH, Gao SH, Jiang GJ. Comparative analysis of proteomes between diabetic and normal human sperm: Insights into the effects of diabetes on male reproduction based on the regulation of mitochondria-related proteins. Mol Reprod Dev 2017; 85:7-16. [PMID: 29149484 DOI: 10.1002/mrd.22930] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 11/13/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Tian An
- Diabetes Research Center; Beijing University of Chinese Medicine; Beijing China
| | - Yue-Fen Wang
- Beijing Hospital of Traditional Chinese Medicine; Beijing China
| | - Jia-Xian Liu
- Leonard Davis School of Gerontology; University of Southern California; Los Angeles California
| | - Yan-Yun Pan
- Diabetes Research Center; Beijing University of Chinese Medicine; Beijing China
| | - Yu-Fei Liu
- Beijing University of Chinese Medicine 3rd Affiliated Hospital; Beijing China
| | - Zhong-Chen He
- Department of Endocrine; Beijing He ping li Hospital; Beijing China
| | - Fang-Fang Mo
- Diabetes Research Center; Beijing University of Chinese Medicine; Beijing China
| | - Jun Li
- Department of Endocrine; Beijing He ping li Hospital; Beijing China
| | - Li-Hua Kang
- Department of Endocrine; Beijing He ping li Hospital; Beijing China
| | - Yu-Jie Gu
- Diabetes Research Center; Beijing University of Chinese Medicine; Beijing China
| | - Bo-Han Lv
- Diabetes Research Center; Beijing University of Chinese Medicine; Beijing China
| | - Si-Huan Gao
- Diabetes Research Center; Beijing University of Chinese Medicine; Beijing China
| | - Guang-Jian Jiang
- Diabetes Research Center; Beijing University of Chinese Medicine; Beijing China
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22
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Long Z, Duan G, Li H, Yi T, Wu X, Chen F, Wu Z, Gao Y. Ubiquinol-cytochrome c reductase core protein 1 may be involved in delayed cardioprotection from preconditioning induced by diazoxide. PLoS One 2017; 12:e0181903. [PMID: 28750029 PMCID: PMC5531499 DOI: 10.1371/journal.pone.0181903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 07/10/2017] [Indexed: 12/26/2022] Open
Abstract
This study aimed to use long-term diazoxide treatment to establish a loss-of-cardioprotection model and then perform proteomics analysis to explore which proteins of mitochondrial inner membrane (MIM) are potentially involved in delayed cardioprotection. Rats received 1 to 8 weeks of diazoxide treatments (20 mg•kg-1•d-1) to establish a loss-of-cardioprotection model in different groups. Detection of serum cTnI levels and cell apoptosis assays in heart tissue were performed. Then, rats MIM after 0, 4 and 6 weeks of diazoxide treatment was isolated and proteomics analysis was performed. An invitro model of H9C2 cells was performed to explore the effects of targeted protein on delayed cardioprotection. The effect of delayed cardioprotection by diazoxide preconditioning disappeared when diazoxide treatments were given for six weeks or longer. Ubiquinol-cytochrome c reductase core protein 1 (UQCRC1) was identified in the proteomics analysis. UQCRC1 expression was upregulated by diazoxide treatment in H9C2 cells, and UQCRC1 down-regulation could increase the lactate dehydrogenase release and apoptosis rate after injury induced by oxygen glucose deprivation. These results showed that UQCRC1 might contribute to the loss-of-cardioprotection model induced by long-term diazoxide treatment and play a role in delayed cardioprotection.
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Affiliation(s)
- Zonghong Long
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Guangyou Duan
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Hong Li
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
- * E-mail:
| | - Tingting Yi
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xiaoxiao Wu
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Feng Chen
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Zhuoxi Wu
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Yuqi Gao
- Key Laboratory of High Altitude Medicine, Third Military Medical University, Chongqing, China
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23
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Overexpression of Ubiquinol-Cytochrome c Reductase Core Protein 1 May Protect H9c2 Cardiac Cells by Binding with Zinc. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1314297. [PMID: 28676853 PMCID: PMC5476884 DOI: 10.1155/2017/1314297] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 04/27/2017] [Accepted: 05/10/2017] [Indexed: 11/18/2022]
Abstract
In several recent studies, proteomics analyses suggest that increase of ubiquinol-cytochrome c reductase core protein 1 (UQCRC1) is cardio-protective. However, direct evidence for this effect has not yet been obtained. Thus, the current study aimed to determine this effect and the mechanism underlying this effect. The results showed that overexpression of UQCRC1 protected H9c2 cardiac cells against in vitro simulated ischemia-reperfusion by maintaining mitochondrial membrane potential and suppressing the expression of caspase-3. These protective effects were significantly enhanced by exogenous Zn2+ but completely abolished by Zn2+-selective chelator TPEN. Furthermore, the upregulation of UQCRC1 reduced the concentration of free Zn2+ in mitochondria, whereas the downregulation of UQCRC1 increased the concentration of free Zn2+ in mitochondria. In conclusion, the overexpression of UQCRC1 can protect H9c2 cardiac cells against simulated ischemia/reperfusion, and this cardio-protective effect is likely mediated by zinc binding.
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You X, Xi J, Cao Y, Zhang J, Luan Y. 4-Bromodiphenyl Ether Induces Germ Cell Apoptosis by Induction of ROS and DNA Damage in Caenorhabditis elegans. Toxicol Sci 2017; 157:510-518. [DOI: 10.1093/toxsci/kfx064] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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