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Song X, Lin Y, Zhang Y, Wang Z, Li X, Liu J, Jiang W, Chen J, Wu L, Rong J, Xu K, Wang G. Long-Term Tetrabromobisphenol A Exposure Induces Gut Microbiota Imbalance and Metabolic Disorders via the Peroxisome Proliferator-Activated Receptor Signaling Pathway in the Regenerated Gut of Apostichopus japonicus. BIOLOGY 2023; 12:1365. [PMID: 37997964 PMCID: PMC10669644 DOI: 10.3390/biology12111365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/08/2023] [Accepted: 10/12/2023] [Indexed: 11/25/2023]
Abstract
Tetrabromobisphenol A (TBBPA), a commonly utilized brominated flame retardant, is found in many types of abiotic and biotic matrices. TBBPA can increase oxidative stress, disrupt the endocrine system, cause neurodevelopmental disorders and activate peroxisome proliferator-activated receptors to modulate lipid deposits in aquatic animals. However, the toxic mechanism of TBBPA on the gut microbiota and intestinal health remains unclear. Apostichopus japonicus is an ideal model for studying the relationship between environmental contaminants and intestinal health due to its unique capacity for evisceration and quickly regenerated intestine. In the present study, we investigated the toxic mechanism of TBBPA on the gut microbiota and intestinal health in the regenerated intestine of A. japonicus. The results show that TBBPA exposure decreased the health of the regenerated intestine and the enzymatic activities, alpha diversity indices, and the relative abundance of the gut microbiota. Transcriptome analysis shows that TBBPA exposure affected lipid metabolism via the PPAR signaling pathway during the process of intestinal regeneration in A. japonicus, suggesting that TBBPA exposure can affect the composition and function of the gut microbiota and intestinal health in the regenerated intestine of A. japonicus. These results provide a basis for further research on the potential toxicity of TBBPA to the intestinal health in animals.
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Affiliation(s)
- Xiaojun Song
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Ying Lin
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Yinfeng Zhang
- College of Medicine, Qingdao University, Qingdao 266021, China
| | - Zi Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiaohan Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Jixiang Liu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Wenwen Jiang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Jianing Chen
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Linxuan Wu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Junjie Rong
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Kefeng Xu
- Marine Science Research Institute of Shandong Province, National Oceanographic Center, Qingdao 266104, China
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Guodong Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
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Sun L, Zhou Y, Wang C, Nie Y, Xu A, Wu L. Multi-generation reproductive toxicity of RDX and the involved signal pathways in Caenorhabditis elegans. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 260:115074. [PMID: 37257349 DOI: 10.1016/j.ecoenv.2023.115074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/02/2023]
Abstract
As one of the most frequently used explosives, hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) can cause persistent pollution in the environment, leading to the potential ecological threat crossing the generations. In this study, we employed Caenorhabditis elegans to explore the toxic effects of RDX on the parental and offspring worms and the involved signaling pathways. Exposure up to 1000 ng/mL of RDX produced a significant increase in reactive oxygen species (ROS) production, germ cell apoptosis, and decrease in eggs laid. Various mutants were used to demonstrate the RDX-induced apoptosis signaling pathway, and the metabolism of RDX in the nematodes was found related to cytochrome P450 and GST through RNA sequencing. Exposure of parental worms to RDX produced significant reproductive toxicity in F1 and F2, but was recovered in F3 and F4. The transgenerational effects were associated with the decreased expression of met-2, spr-5, and set-2. Our findings revealed the signaling pathways related to the reproductive toxicity caused by RDX in C. elegans and their future generations, which provided the basis for further exploration of the ecological risks of energetic compounds in the environment.
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Affiliation(s)
- Lingyan Sun
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, PR China
| | - Yanping Zhou
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, PR China
| | - Chunyan Wang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, PR China
| | - Yaguang Nie
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, PR China.
| | - An Xu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, PR China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Chinese Academy of Sciences; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
| | - Lijun Wu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, PR China
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Zhang W, Tang Y, Han Y, Huang L, Zhou W, Zhou C, Hu Y, Lu R, Wang F, Shi W, Liu G. Immunotoxicity of pentachlorophenol to a marine bivalve species and potential toxification mechanisms underpinning. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129681. [PMID: 36104908 DOI: 10.1016/j.jhazmat.2022.129681] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/06/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
The ubiquitous presence of pentachlorophenol (PCP) in ocean environments threatens marine organisms. However, its effects on immunity of marine invertebrates at environmentally realistic levels are still largely unknown. In this study, the immunotoxicity of PCP to a representative bivalve species was evaluated. In addition, its impacts on metabolism, energy supply, detoxification, and oxidative stress status were also analysed by physiological examination as well as comparative transcriptomic and metabolomic analyses to reveal potential mechanisms underpinning. Results illustrated that the immunity of blood clams was evidently hampered upon PCP exposure. Additionally, significant alterations in energy metabolism were detected in PCP-exposed clams. Meanwhile, the expressions of key detoxification genes and the in vivo contents (or activity) of key detoxification enzymes were markedly altered. Exposure to PCP also triggered significant elevations in intracellular ROS and MDA whereas evident suppression of haemocyte viability. The abovementioned findings were further supported by transcriptomic and metabolomic analyses. Our results suggest that PCP may hamper the immunity of the blood clam by (i) constraining the cellular energy supply through disrupting metabolism; and (ii) damaging haemocytes through inducing oxidative stress. Considering the high similarity of immunity among species, many marine invertebrates may be threatened by PCP, which deserves more attention.
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Affiliation(s)
- Weixia Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Lin Huang
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Chaosheng Zhou
- Zhejiang Mariculture Research Institute, Wenzhou 325005, China
| | - Yuan Hu
- Zhejiang Mariculture Research Institute, Wenzhou 325005, China
| | - Rongmao Lu
- Zhejiang Mariculture Research Institute, Wenzhou 325005, China
| | - Fang Wang
- Zhejiang Mariculture Research Institute, Wenzhou 325005, China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
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4
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Gu J, Lin D, Sun Y, Guo Y, Chen B, Zhang Y, Liu F. Integrating transcriptome and physiological analysis to reveal the essential responses of Daphnia magna to antimony trioxide nanoparticle. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129303. [PMID: 35717819 DOI: 10.1016/j.jhazmat.2022.129303] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/21/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Antimony (Sb) pollution has already posed a severe threat to the aquatic ecosystem. However, the toxicity mechanisms of Sb on aquatic organisms are far from being elucidated. One of the crucial questions remaining unresolved is the characterization of molecular toxicity of Sb(III). Transcriptomics profiling combined with physiological characterizations was applied to investigate the response of Daphnia magna to nano-size antimony trioxide (nATO) and its soluble Sb(III) counterpart antimony potassium tartrate (APT) in the present study. Both nATO and APT induced the formation of oxidative stress, enhanced the activities of anti-oxidative enzymes, altered the metabolism of xenobiotics, increased the concentration of hydrogen sulfide (H2S) and nitric oxide (NO), and triggered the self-protection mechanisms such as ubiquitin-mediated proteolysis. In addition, nATO and APT caused damage to the nervous system of D. magna, inhibited its locomotion and nutrient uptake in a concentration-dependent manner. Moreover, nATO exposure enhanced the autophagy activity, reflected by the up-regulated expression of hypoxia-inducible factor-1α, calmodulin-dependent protein kinase-β, and inositol-requiring enzyme 1. The present study, for the first time, depicted a global map of cellular response to nATO, provided essential information on Sb(III) toxicity to aquatic organisms, and is of great significance to the development of Sb management strategies.
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Affiliation(s)
- Jihai Gu
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Dongdong Lin
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Yanyang Sun
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Yongzhi Guo
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Bing Chen
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Yuming Zhang
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
| | - Fengsong Liu
- Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China
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5
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Zhang L, Sun W, Chen H, Tian F, Cai W. Transcriptome analysis of acute exposure of the Manila clam, Ruditapes philippinarum to perfluorooctane sulfonate (PFOS). Comp Biochem Physiol C Toxicol Pharmacol 2020; 231:108736. [PMID: 32142923 DOI: 10.1016/j.cbpc.2020.108736] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/27/2020] [Accepted: 02/27/2020] [Indexed: 12/23/2022]
Abstract
Perfluorooctane sulfonate (PFOS) is an increasingly important environmental pollutant, which has been detected almost everywhere in the environment. Despite the widespread presence of PFOS, much less notice is taken of its toxicology effects on marine bivalves. Thus, the transcriptome response to PFOS treatment (nominal concentration of 20 mg/L) in hepatopancreas of a sentinel organism, Ruditapes philippinarum was examined. Compared with the control group, 32,149 unigenes were up-regulated and 26,958 unigenes down-regulated. Notably, significant gene expression changes were found in carbohydrate metabolism, energy metabolism, amino acid metabolism, lipid metabolism and protein biosynthesis, indicating the metabolic disruptions caused by PFOS in R. philippinarum. Additionally, numerous other differentially expressed genes were involved in immune system, antioxidant defense system and detoxification metabolism. In summary, transcriptome profiling of R. philippinarum after exposure to PFOS provided molecular support for our current understanding of the detrimental toxicity of PFOS on marine bivalves.
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Affiliation(s)
- Linbao Zhang
- Scientific Observing and Experimental Station of South China Sea Fishery Resources & Environments, Ministry of Agriculture, Key Laboratory of Fishery Ecology and Environment, Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, PR China.
| | - Wei Sun
- Scientific Observing and Experimental Station of South China Sea Fishery Resources & Environments, Ministry of Agriculture, Key Laboratory of Fishery Ecology and Environment, Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, PR China
| | - Haigang Chen
- Scientific Observing and Experimental Station of South China Sea Fishery Resources & Environments, Ministry of Agriculture, Key Laboratory of Fishery Ecology and Environment, Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, PR China
| | - Fei Tian
- Scientific Observing and Experimental Station of South China Sea Fishery Resources & Environments, Ministry of Agriculture, Key Laboratory of Fishery Ecology and Environment, Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, PR China
| | - Wengui Cai
- Scientific Observing and Experimental Station of South China Sea Fishery Resources & Environments, Ministry of Agriculture, Key Laboratory of Fishery Ecology and Environment, Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, PR China
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6
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Liu F, Zhang Y, Zhang M, Luo Q, Cao X, Cui C, Lin K, Huang K. Toxicological assessment and underlying mechanisms of tetrabromobisphenol A exposure on the soil nematode Caenorhabditis elegans. CHEMOSPHERE 2020; 242:125078. [PMID: 31704520 DOI: 10.1016/j.chemosphere.2019.125078] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 10/04/2019] [Accepted: 10/07/2019] [Indexed: 05/19/2023]
Abstract
The widespread use of tetrabromobisphenol A (TBBPA) in industries has resulted in its frequent detection in environmental matrices, and the mechanisms of its associated hazards need further investigation. In this study, the nematode Caenorhabditis elegans (C. elegans) was exposed to environmentally relevant concentrations of TBBPA (0, 0.1, 1, 10, 100, 200 μg/L) to determine its effects. At TBBPA concentrations above 1 μg/L, the number of head thrashes, as the most sensitive physiological indicator, decreased significantly. Using the Illumina HiSeq™ 2000 sequencer, differentially expressed genes (DEGs) were determined, and 52 were down regulated and 105 were up regulated in the 200 μg/L TBBPA treatment group versus the control group. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway database analysis demonstrated that dorso-ventral axis formation is related to neurotoxicity; metabolism of xenobiotics by Cytochrome P450 (CYP450) and glutathione-S-transferase (GST) was found to be the vital metabolic mechanisms and were confirmed by quantitative real-time polymerase chain reaction (qRT-PCR). GST was ascribed to the augmentation because mutations in cyp-13A7 were constrained under TBBPA exposure. Additionally, oxidative stress indicators accumulated in a dose-dependent relationship. These results will help understand the molecular basis for TBBPA-induced toxicity in C. elegans and open novel avenues for facilitating the exploration of more efficient strategies against TBBPA toxicity.
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Affiliation(s)
- Fuwen Liu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ying Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Meng Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Qishi Luo
- Branch of Shanghai, Yonker Environmental Protection Co., Ltd, Shanghai, 200051, China
| | - Xue Cao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Changzheng Cui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Kuangfei Lin
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Kai Huang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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7
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Rock KD, Gillera SEA, Devarasetty P, Horman B, Knudsen G, Birnbaum LS, Fenton SE, Patisaul HB. Sex-specific behavioral effects following developmental exposure to tetrabromobisphenol A (TBBPA) in Wistar rats. Neurotoxicology 2019; 75:136-147. [PMID: 31541695 PMCID: PMC6935469 DOI: 10.1016/j.neuro.2019.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 08/07/2019] [Accepted: 09/02/2019] [Indexed: 12/25/2022]
Abstract
Tetrabromobisphenol A (TBBPA) has become a ubiquitous indoor contaminant due to its widespread use as an additive flame retardant in consumer products. Reported evidence of endocrine disruption and accumulation of TBBPA in brain tissue has raised concerns regarding its potential effects on neurodevelopment and behavior. The goal of the present study was to examine the impact of developmental TBBPA exposure, across a wide range of doses, on sexually dimorphic non-reproductive behaviors in male and female Wistar rats. We first ran a pilot study using a single TBBPA dose hypothesized to produce behavioral effects. Wistar rat dams were orally exposed using cookie treats to 0 or 0.1 mg TBBPA/kg bw daily from gestational day (GD) 9 to postnatal day (PND) 21 to assess offspring (both sexes) activity and anxiety-related behaviors. Significant effects were evident in females, with exposure increasing activity levels. Thus, this dose was used as the lowest TBBPA dose in a subsequent, larger study conducted as part of a comprehensive assessment of TBBPA toxicity. Animals were exposed to 0, 0.1, 25, or 250 mg TBBPA/kg bw daily by oral gavage starting on GD 6 through PND 90 (dosed dams GD 6 - PND 21, dosed offspring PND 22 - PND 90). Significant behavioral findings were observed for male offspring, with increased anxiety-like behavior as the primary phenotype. These findings demonstrate that exposure to environmental contaminants, like TBBPA, can have sex-specific effects on behavior highlighting the vulnerability of the developing brain.
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Affiliation(s)
- Kylie D Rock
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
| | - Sagi Enicole A Gillera
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA; National Toxicology Program Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - Pratyush Devarasetty
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
| | - Brian Horman
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA
| | - Gabriel Knudsen
- Laboratory of Toxicokinetics, National Cancer Institute, Research Triangle Park, NC, 27709, USA
| | - Linda S Birnbaum
- Laboratory of Toxicokinetics, National Cancer Institute, Research Triangle Park, NC, 27709, USA
| | - Suzanne E Fenton
- National Toxicology Program Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - Heather B Patisaul
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, 27695, USA; Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27695, USA.
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Lv J, Cao T, Ji C, Cong M, Zhao J, Wu H. Digital gene expression analysis in the gills of Ruditapes philippinarum after nitrite exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109661. [PMID: 31520948 DOI: 10.1016/j.ecoenv.2019.109661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 09/04/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
Due to the overload of pollutants from highly intensive anthropic activities, nitrite accumulates in offshore seawater and has been a long-lasting pollutant to the healthy aquaculture of the mollusk. In the present study, Ruditapes philippinarum was used as the target bivalve to receive nitrite exposure at environmental concentration for 1 and 7 days. Differentially expressed genes (DEGs) were detected and analyzed by a digital gene expression (DGE) approach to describe the toxicity of nitrite on the bivalve at the gene level. In the N1 group, 185 DEGs were generated and enriched in six Gene Ontology (GO) terms, including oxidoreductase activity, heme binding, tetrapyrrole binding, iron ion binding, metal binding and cation binding. The DEGs in the N1 group were also enriched in two Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, e.g., arachidonic acid metabolism and ovarian steroidogenesis. In the N7 group, 81 DEGs were generated without any GO enrichment but were enriched in five KEGG pathways, including protein processing in the endoplasmic reticulum, protein export, prion diseases, thyroid hormone synthesis and arachidonic acid metabolism. This suggested that nitrite exposure might cause adverse effects to the clams in several aspects, including oxidative damage, depressed immunity, and disorders in cell proliferation, hormone metabolism and tissue regeneration. Evaluation of oxidative stress indicated that nitrite exposure actually induced redox state imbalance by enhancing the contents of thiobarbituric acid reactive substances (TBARSs) and glutathione (GSH), and the activity of glutathione peroxidase (GSH-PX) but not superoxide dismutase (SOD). These results will provide valuable gene references for further study on the toxicology mechanism of bivalves under environmental nitrite stress.
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Affiliation(s)
- Jiasen Lv
- Biology School of Yantai University, Yantai, 264005, PR China
| | - Tengfei Cao
- Biology School of Yantai University, Yantai, 264005, PR China
| | - Chenglong Ji
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China
| | - Ming Cong
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China.
| | - Jianmin Zhao
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China
| | - Huifeng Wu
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS); Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China.
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9
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Wang H, Pan L, Xu R, Si L, Zhang X. The molecular mechanism of Nrf2-Keap1 signaling pathway in the antioxidant defense response induced by BaP in the scallop Chlamys farreri. FISH & SHELLFISH IMMUNOLOGY 2019; 92:489-499. [PMID: 31220575 DOI: 10.1016/j.fsi.2019.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 05/15/2019] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
In this study, we cloned the full-length cDNA of the Kelch-like ECH-associated protein 1 (Keap1) from the scallops Chlamys farreri (C. farreri). Sequences alignment and phylogenetic analysis showed that CfKeap1 was highly specific in the scallops, and the amino acid sequence identity value is closer to that in zebrafish Keap1b and Nothobranchius furzeri Keap1b than Keap1a. The highest transcription level of CfKeap1 expression was detected in the digestive glands. The gene expressions of CfKeap1, NF-E2-related nuclear factor 2 (Nrf2), Superoxide Dismutase (SOD), Catalase (CAT) and Glutathione Peroxidase (GPx) in digestive glands were evaluated by quantitative real-time PCR (qRT-PCR) after being exposed to benzo(a)pyrene (BaP) (0.25, 1and 4 μg/L) for 15 days, which indicated that the activation of Nrf2 and Keap1 expression can be significantly induced under BaP exposure. RNA interference (RNAi) experiments were conducted to examine the expression profiles of CfKeap1, Nrf2, antioxidant genes (Cu/Zn-SOD, CAT and GPx), mitogen-activated protein kinase (MAPKs) and protein kinase C (PKC) signaling pathways key genes in digestive glands and gills when exposed to BaP. Results showed that the mRNA level of CfKeap1 was significantly decreased by 60.69% and59.485%. The changes of CfKeap1 and Nrf2 suggested that the enhancement of Keap1 expression stimulating Nrf2 degradation. Furthermore, the expression of antioxidant genes were consistent with the Nrf2 gene, which suggesting that Nrf2-Keap1 signaling pathway is required for the induction of antioxidant genes. Besides, the changes of PKC, c-Jun N-terminal kinase (JNK) and p38 genes expression suggested that PKC and MAPKs signaling pathways played a synergistic role with Nrf2-Keap1 signaling pathway in the anti-oxidative defense system of bivalve molluscs. In conclusion, these data demonstrated that Keap1 can sense nucleophilic or oxidative stress factors to regulate the Nrf2 signaling pathway together with Cul3-based E3 Ubiquitin Ligase (E3), and the Nrf2-Keap1 signaling pathway played an important role in modulating gene expression of antioxidant enzymes in bivalve mollusks.
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Affiliation(s)
- Hongdan Wang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China.
| | - Ruiyi Xu
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Lingjun Si
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Xin Zhang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
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10
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Liang S, Zhou H, Yin N, Lu Y, Faiola F. Embryoid body-based RNA-seq analyses reveal a potential TBBPA multifaceted developmental toxicity. JOURNAL OF HAZARDOUS MATERIALS 2019; 376:223-232. [PMID: 31129320 DOI: 10.1016/j.jhazmat.2019.05.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
The frequent detection of tetrabromobisphenol A (TBBPA) in the human body, especially in umbilical cord serum and breast milk, has raised concerns about TBBPA potential effects on embryonic development. The differentiation of embryonic stem cells (ESCs) in vitro can serve as a model for the early stages of embryonic development. In this study, we differentiated mouse ESCs via 3D aggregates called embryoid bodies in presence of environment and human relevant TBPPA concentrations for 28 days. We collected samples at different time points and analyzed TBBPA-dependent global gene expression changes by RNA-seq. Our analyses revealed a potential TBBPA multifaceted developmental toxicity with effects on the nervous and cardiac/skeletal muscle systems. Mechanistically, our findings suggest TBBPA endocrine disrupting activities in part via prolactin signaling.
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Affiliation(s)
- Shaojun Liang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hui Zhou
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Nuoya Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuanping Lu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Francesco Faiola
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.
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11
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Jiang S, Miao J, Wang X, Liu P, Pan L. Inhibition of growth in juvenile manila clam Ruditapes philippinarum: Potential adverse outcome pathway of TBBPA. CHEMOSPHERE 2019; 224:588-596. [PMID: 30844590 DOI: 10.1016/j.chemosphere.2019.02.157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/09/2019] [Accepted: 02/23/2019] [Indexed: 06/09/2023]
Abstract
Tetrabromobisphenol A (TBBPA) is ubiquitous and its contents showing an increasing trend in the coastal environment. In order to investigate the effects of TBBPA on marine bivalves, juvenile manila clams Ruditapes phillipinarum were exposed to TBBPA for 28 days. The results showed that shell growth rate of juvenile clams after exposure to 62.5-1000 μg L-1 TBBPA for 28 d were significantly inhibited (p < 0.05). Then in order to link the changes in filtration rate, mRNA expression of insulin-like growth factor homologue (IGF) and tissue thyroid hormone (TH) contents to growth, juvenile clams were exposed to 62.5 and 500 μg L-1 TBBPA for 14 days. The transcriptional levels of neuroendocrine signals (NPF and insulin homologue) associated with filter feeding regulation, and genes of TH synthesis-related enzymes were also examined. The results showed that filtration rates was significantly reduced to 44.1% and 14% of controls after 14 d of exposure. In parallel, exposure to TBBPA significantly increased the expression levels of insulin which may elicit the filter feeding inhibition. TBBPA exposure caused alterations in tissue content of THs and mRNA expression of TH synthesis-related enzymes. However, the data showed increased T3 content, T3/T4 ratio and mRNA expression of IGF. These data demonstrated that the most important key event of TBBPA could be linked to growth impairment in juveniles was the reduction of filtration rate. These results provide a robust framework towards revealing the underlying mechanism of the growth inhibition caused by TBBPA on bivalves and understanding the adverse outcome pathway across taxonomic phyla.
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Affiliation(s)
- Shanshan Jiang
- The Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, PR China
| | - Jingjing Miao
- The Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, PR China.
| | - Xin Wang
- The Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, PR China
| | - Peipei Liu
- The Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, PR China
| | - Luqing Pan
- The Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, PR China
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Wang Y, Zhou S, Liu T, Chen M, Li W, Zhang X. The transcriptomic responses of the ark shell, Anadara broughtonii, to sulfide and hypoxia exposure. Mol Biol Rep 2019; 46:4245-4257. [DOI: 10.1007/s11033-019-04879-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 05/14/2019] [Indexed: 01/15/2023]
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13
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Chi C, Giri SS, Jun JW, Kim HJ, Kim SW, Kang JW, Park SC. Detoxification and Immune Transcriptomic Response of the Gill Tissue of Bay Scallop ( Argopecten irradians) Following Exposure to the Algicide Palmitoleic Acid. Biomolecules 2018; 8:biom8040139. [PMID: 30404247 PMCID: PMC6315773 DOI: 10.3390/biom8040139] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 12/16/2022] Open
Abstract
Palmitoleic acid (PA) is an effective algicide against Alexandrium tamarense. However, the toxicological mechanism of PA exposure is unclear. The transcript abundance and differentially expressed genes (DEGs) in gills of bay scallop were investigated following 80 mg/L PA exposure up to 48 h using the Illumina HiSeq 4000 deep-sequencing platform with the recommended read length of 100 bp. De novo assembly of paired-end reads yielded 62,099 unigenes; 5414 genes were identified as being significantly increased, and 4452 were decreased. Based on gene ontology classification and enrichment analysis, the ‘cellular process’, ‘metabolic process’, ‘response to stimulus’, and ‘catalytic process’ with particularly high functional enrichment were revealed. The DEGs, which are related to detoxification and immune responses, revealed that acid phosphatase, fibrinogen C domain-containing protein, cyclic AMP-responsive element-binding protein, glutathione reductase, ATP-binding cassette, nuclear factor erythroid 2-related factor, NADPH2:quinone reductase, and cytochrome P450 4F22, 4B1, and 2C8-related gene expression decreased. In contrast, some genes related to glutathione S-transferase, C-type lectin, superoxide dismutase, toll-like receptors, and cytochrome P450 2C14, 2U1, 3A24 and 4A2 increased. The results of current research will be a valuable resource for the investigation of gene expression stimulated by PA, and will help understanding of the molecular mechanisms underlying the scallops’ response to PA exposure.
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Affiliation(s)
- Cheng Chi
- Laboratory of Aquatic Nutrition and Ecology, College of Animal Science and Technology, Nanjing Agricultural University, Weigang Road 1, Nanjing 210095, China.
| | - Sib Sankar Giri
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea.
| | - Jin Woo Jun
- Department of Aquaculture, Korea National College of Agriculture and Fisheries, Jeonju 54874, Korea.
| | - Hyoun Joong Kim
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea.
| | - Sang Wha Kim
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea.
| | - Jeong Woo Kang
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea.
| | - Se Chang Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea.
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Wang H, Pan L, Xu R, Miao J, Si L, Pan L. Comparative transcriptome analysis between the short-term stress and long-term adaptation of the Ruditapes philippinarum in response to benzo[a]pyrene. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 204:59-69. [PMID: 30189351 DOI: 10.1016/j.aquatox.2018.08.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 08/26/2018] [Accepted: 08/27/2018] [Indexed: 06/08/2023]
Abstract
In order to monitor the pollution of polycyclic aromatic hydrocarbons (PAHs) in the seawater environment, screening biomarkers capable of monitoring PAHs is the focus of many studies. The transcriptomic profiles of the digestive gland tissue from the R. philippinarum groups after the exposure to BaP (4 μg/L) at four time points (0, 0.5, 6 and 15 days) were investigated to globally screen the key genes and pathways involved in the responses to short-term stress and long-term adaptation of BaP resistance. By comparative transcriptome analysis, 233, 282 and 58 differentially expressed genes (DEGs) were identified at 0.5 day, 6 day and 15 day (vs 0 day). The differential expression genes were related to stress response, detoxification metabolic process and innate immunity. DEGs of each group at different stages were clustered in six profiles based on gene expression pattern. Gene Ontology (GO) and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analysis were used on all genes to determine the biological functions and processes. We selected Multidrug resistance protein 3 (MRP3), transcriptional regulator ATRX-like isoform X2 (ATRX) as biomarker indicator genes for short-term pollution monitoring and NADH dehydrogenase [ubiquinone] 1 (NQO1), Complement C1q-like protein 4 (C1q), Glutathione-S-transferase theta (GST), E3 ubiquitin-protein ligase (E3) for long-term pollution monitoring based on the different expression patterns and the function in detoxification and antioxidant defense system. Besides, the expression of seven genes was measured through Quantitative real-time PCR (qPCR) according to their gene expression patterns which was confirmed by the DGE analysis. Taken together, adoption of transcriptomic analysis to explore the bivalves' mRNA abundance changes and detoxification metabolic mechanism under the BaP stress at different time points can aid the development of sensitive and informed molecular endpoints for application towards ecotoxicogenomic monitoring of bivalves.
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Affiliation(s)
- Hongdan Wang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Ruiyi Xu
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Jingjing Miao
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Lingjun Si
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China.
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15
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Cai L, Li J, Yu L, Wei Y, Miao Z, Chen M, Huang R. Characterization of transcriptional responses mediated by benzo[a]pyrene stress in a new marine fish model of goby, Mugilogobius chulae. Genes Genomics 2018; 41:113-123. [PMID: 30242742 DOI: 10.1007/s13258-018-0743-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022]
Abstract
Benzo[a]pyrene (BaP) is one of the most studied targets among polycyclic aromatic hydrocarbons (PAHs). Because of the complexity of the toxicity mechanism in BaP, little is known about the molecular mechanism at the level of transcription of BaP in marine fishes. The primary objective of this study was to investigate the molecular basis of the effects of BaP on marine fish, using Mugilogobius chulae (Smith 1932) as the model. A closed colony of M. chulae was used for the BaP toxicity test. Two fish liver samples per replicate from each group were excised and blended into one sample by pooling an equal amount of liver tissue. Total RNA of all samples was extracted separately. Equal quantities of total RNA from the three replicates of the two groups were pooled for sequencing. The sequencing cDNA libraries were sequenced using Illumina HiSeq 2000 system. Differentially expressed genes were detected with the DEGSeq R package. In total, 52,364,032 and 53,771,748 clean nucleotide reads were obtained in the control and BaP-exposed libraries, respectively, with N50 lengths of 1277 and 1288 bp, respectively. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses revealed a significant enrichment of genes related to detoxification, transportation, and lipid metabolism. We also identified, for the first time, an association between endoplasmic reticulum dysfunction and lipid metabolism resulting from BaP exposure. Using quantitative real-time PCR, some effective molecular biomarkers for monitoring of BaP-polluted seawater were identified. The results demonstrate that BaP enhanced the expression of genes involved in detoxification in M. chulae and inhibited that of genes related to lipid metabolism, possibly by suppressing the expression of numerous ER-related genes involved in fat digestion and absorption.
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Affiliation(s)
- Lei Cai
- Key Laboratory of Guangdong Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, No. 11, Fengxin Road, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China
| | - Jianjun Li
- Key Laboratory of Guangdong Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, No. 11, Fengxin Road, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China
| | - Lujun Yu
- Key Laboratory of Guangdong Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, No. 11, Fengxin Road, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China
| | - Yuanzheng Wei
- Key Laboratory of Guangdong Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, No. 11, Fengxin Road, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China
| | - Zongyu Miao
- Key Laboratory of Guangdong Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, No. 11, Fengxin Road, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China
| | - Meili Chen
- Key Laboratory of Guangdong Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, No. 11, Fengxin Road, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China
| | - Ren Huang
- Key Laboratory of Guangdong Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, No. 11, Fengxin Road, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China.
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16
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Chi C, Giri SS, Jun JW, Kim SW, Kim HJ, Kang JW, Park SC. Detoxification- and Immune-Related Transcriptomic Analysis of Gills from Bay Scallops ( Argopectenirradians) in Response to Algal Toxin Okadaic Acid. Toxins (Basel) 2018; 10:toxins10080308. [PMID: 30060565 PMCID: PMC6115978 DOI: 10.3390/toxins10080308] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/24/2018] [Accepted: 07/26/2018] [Indexed: 01/08/2023] Open
Abstract
To reveal the molecular mechanisms triggered by okadaic acid (OA)-exposure in the detoxification and immune system of bay scallops, we studied differentially-expressed genes (DEGs) and the transcriptomic profile in bay scallop gill tissue after 48 h exposure to 500 nM of OA using the Illumina HiSeq 4000 deep-sequencing platform. De novo assembly of paired-end reads yielded 55,876 unigenes, of which 3204 and 2620 genes were found to be significantly up- or down-regulated, respectively. Gene ontology classification and enrichment analysis of the DEGs detected in bay scallops exposed to OA revealed four ontologies with particularly high functional enrichment, which were ‘cellular process’ (cellular component), ‘metabolic process’ (biological process), ‘immune system process’ (biological process), and ‘catalytic process’ (molecular function). The DEGs revealed that cyclic AMP-responsive element-binding proteins, acid phosphatase, toll-like receptors, nuclear erythroid 2-related factor, and the NADPH2 quinone reductase-related gene were upregulated. In contrast, the expression of some genes related to glutathione S-transferase 1, C-type lectin, complement C1q tumor necrosis factor-related protein, Superoxide dismutase 2 and fibrinogen C domain-containing protein, decreased. The outcomes of this study will be a valuable resource for the study of gene expression induced by marine toxins, and will help understanding of the molecular mechanisms underlying the scallops’ response to OA exposure.
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Affiliation(s)
- Cheng Chi
- Laboratory of Aquatic Nutrition and Ecology, College of Animal Science and Technology, Nanjing Agricultural University, Weigang Road 1, Nanjing 210095, China.
| | - Sib Sankar Giri
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151742, Korea.
| | - Jin Woo Jun
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151742, Korea.
| | - Sang Wha Kim
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151742, Korea.
| | - Hyoun Joong Kim
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151742, Korea.
| | - Jeong Woo Kang
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151742, Korea.
| | - Se Chang Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151742, Korea.
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17
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Wang M, Wang L, Jia Z, Yi Q, Song L. The various components implied the diversified Toll-like receptor (TLR) signaling pathway in mollusk Chlamys farreri. FISH & SHELLFISH IMMUNOLOGY 2018; 74:205-212. [PMID: 29305991 DOI: 10.1016/j.fsi.2017.12.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/25/2017] [Accepted: 12/31/2017] [Indexed: 06/07/2023]
Abstract
Toll-like receptor (TLR) signaling pathway, composed of various components, plays pivotal roles in host innate immune defense mechanism. In the present study, twenty-nine TLR signaling pathway components, including receptors, adaptors, transduction molecules and immune effectors, were identified in Zhikong scallop Chlamys farreri via assembling and screening public available transcriptomic data and expression sequence tags (ESTs). These identified TLR signaling pathway components were constitutively expressed and detectable in various tissues, and almost all of them were highly expressed in gill and hepatopancreas. These results indicated the presence of TLR signaling pathways in both MyD88-dependent and MyD88-independent forms in scallop, and implied the diversified TLR signaling pathway in mollusk C. farreri.
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Affiliation(s)
- Mengqiang Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Lingling Wang
- Functional Laboratory of Marine Fisheries Science and Food Production Process, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China
| | - Zhihao Jia
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qilin Yi
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China
| | - Linsheng Song
- Functional Laboratory of Marine Fisheries Science and Food Production Process, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China.
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18
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Cong M, Wu H, Cao T, Lv J, Wang Q, Ji C, Li C, Zhao J. Digital gene expression analysis in the gills of Ruditapes philippinarum exposed to short- and long-term exposures of ammonia nitrogen. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 194:121-131. [PMID: 29179147 DOI: 10.1016/j.aquatox.2017.11.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/21/2017] [Accepted: 11/22/2017] [Indexed: 06/07/2023]
Abstract
Previous study revealed severe toxic effects of ammonia nitrogen on Ruditapes philippinarum including lysosomal instability, disturbed metabolic profiles, gill tissues with damaged structure, and variation of neurotransmitter concentrations. However, the underlying molecular mechanism was not fully understood yet. In the present study, digital gene expression technology (DGE) was applied to globally screen the key genes and pathways involved in the responses to short- and long-term exposures of ammonia nitrogen. Results of DGE analysis indicated that short-term duration of ammonia exposure affected pathways in Dorso-ventral axis formation, Notch signaling, thyroid hormone signaling and protein processing in endoplasmic reticulum. The long-term exposure led to DEGs significantly enriched in gap junction, immunity, signal and hormone transduction, as well as key substance metabolism pathways. Functional research of significantly changed DEGs suggested that the immunity of R. philippinarum was weakened heavily by toxic effects of ammonia nitrogen, as well as neuro-transduction and metabolism of important substances. Taken together, the present study provides a molecular support for the previous results of the detrimental toxicity of ammonia exposure in R. philippinarum, further work will be performed to investigate the specific genes and their certain functions involved in ammonia toxicity to molluscs.
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Affiliation(s)
- Ming Cong
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Huifeng Wu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, PR China.
| | - Tengfei Cao
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Jiasen Lv
- Biology School of Yantai University, Yantai 264005, PR China
| | - Qing Wang
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Chenglong Ji
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Chenghua Li
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Jianmin Zhao
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.
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19
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Schultz JH, Adema CM. Comparative immunogenomics of molluscs. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 75:3-15. [PMID: 28322934 PMCID: PMC5494275 DOI: 10.1016/j.dci.2017.03.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/10/2017] [Accepted: 03/15/2017] [Indexed: 05/22/2023]
Abstract
Comparative immunology, studying both vertebrates and invertebrates, provided the earliest descriptions of phagocytosis as a general immune mechanism. However, the large scale of animal diversity challenges all-inclusive investigations and the field of immunology has developed by mostly emphasizing study of a few vertebrate species. In addressing the lack of comprehensive understanding of animal immunity, especially that of invertebrates, comparative immunology helps toward management of invertebrates that are food sources, agricultural pests, pathogens, or transmit diseases, and helps interpret the evolution of animal immunity. Initial studies showed that the Mollusca (second largest animal phylum), and invertebrates in general, possess innate defenses but lack the lymphocytic immune system that characterizes vertebrate immunology. Recognizing the reality of both common and taxon-specific immune features, and applying up-to-date cell and molecular research capabilities, in-depth studies of a select number of bivalve and gastropod species continue to reveal novel aspects of molluscan immunity. The genomics era heralded a new stage of comparative immunology; large-scale efforts yielded an initial set of full molluscan genome sequences that is available for analyses of full complements of immune genes and regulatory sequences. Next-generation sequencing (NGS), due to lower cost and effort required, allows individual researchers to generate large sequence datasets for growing numbers of molluscs. RNAseq provides expression profiles that enable discovery of immune genes and genome sequences reveal distribution and diversity of immune factors across molluscan phylogeny. Although computational de novo sequence assembly will benefit from continued development and automated annotation may require some experimental validation, NGS is a powerful tool for comparative immunology, especially increasing coverage of the extensive molluscan diversity. To date, immunogenomics revealed new levels of complexity of molluscan defense by indicating sequence heterogeneity in individual snails and bivalves, and members of expanded immune gene families are expressed differentially to generate pathogen-specific defense responses.
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Affiliation(s)
- Jonathan H Schultz
- Center for Evolutionary and Theoretical Immunology, Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Coen M Adema
- Center for Evolutionary and Theoretical Immunology, Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA.
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20
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Chen Y, Hu Y, Liu S, Zheng H, Wu X, Huang Z, Li H, Peng B, Long J, Pan B, Huang C, Dong Q. Whole-body aerosol exposure of cadmium chloride (CdCl2) and tetrabromobisphenol A (TBBPA) induced hepatic changes in CD-1 male mice. JOURNAL OF HAZARDOUS MATERIALS 2016; 318:109-116. [PMID: 27415598 DOI: 10.1016/j.jhazmat.2016.06.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 06/25/2016] [Accepted: 06/27/2016] [Indexed: 06/06/2023]
Abstract
Cadmium (Cd) and tetrabromobisphenol A (TBBPA) are two prevalent contaminants in e-waste recycling facilities. However, the potential adversely health effect of co-exposure to these two types of pollutants in an occupational setting is unknown. In this study, we investigated co-exposure of these two pollutants on hepatic toxicity in CD-1 male mice through a whole-body aerosol inhalation route. Specifically, mice were exposed to solvent control (5% DMSO), Cd (8μg/m(3)), TBBPA (16μg/m(3)) and Cd/TBBPA mixture for 8h/day and 6days a week for 60 days. Hepatic changes include increased organ weight, focal necrosis, and elevated levels of liver enzymes in serum. These changes were most severe in mice exposed to TBBPA, followed by Cd/TBBPA mixture and Cd. These chemicals also led to suppressed antioxidant defensive mechanisms and increased oxidative stress. Further, these chemicals induced gene expression of apoptosis-related genes, activated genes encoding for phase I detoxification enzymes and inhibited genes encoding for phase II detoxification enzymes. These findings indicate that the hepatic damages induced by subchronic aerosol exposure of Cd and TBBPA may result from the oxidative damages caused by excessive ROS production when these chemicals were metabolized in the liver.
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Affiliation(s)
- Yuanhong Chen
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Yabing Hu
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Shuyun Liu
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Huiying Zheng
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Xiaojuan Wu
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Zhengyu Huang
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Hao Li
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Baoqi Peng
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Jinlie Long
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Bishu Pan
- Taizhou Center for Disease Control and Prevention, Taizhou 318000, PR China
| | - Changjiang Huang
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China.
| | - Qiaoxiang Dong
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China.
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21
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Jiang X, Qiu L, Zhao H, Song Q, Zhou H, Han Q, Diao X. Transcriptomic responses of Perna viridis embryo to Benzo(a)pyrene exposure elucidated by RNA sequencing. CHEMOSPHERE 2016; 163:125-132. [PMID: 27522184 DOI: 10.1016/j.chemosphere.2016.07.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 07/12/2016] [Accepted: 07/28/2016] [Indexed: 06/06/2023]
Abstract
The green mussel Perna viridis is an ideal biomonitor to evaluate marine environmental pollution. Benzo(a)pyrene (BaP) is a typical polycyclic aromatic hydrocarbon (PAH), which is well known for the mutagenic and carcinogenic characteristics. However, the toxicological effects of BaP on Perna viridis embryo are still unclear. In this study, we investigated the embryo transcriptomic profile of Perna viridis treated with BaP via digital gene expression analysis. A total of 92,362,742 reads were produced from two groups (control and BaP exposure) by whole transcriptome sequencing (RNA-Seq). Gene Ontology (GO) and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analysis were used on all genes to determine the biological functions and processes. Genes involved in various molecular pathways of toxicological effects were enriched further. The differential expression genes (DEGs) were related to stress response, infectious disease and innate immunity. Quantitative real-time PCR (qRT-PCR) measured expressional levels of six genes confirmed through the DGE analysis. This study reveals that RNA-seq for transcriptome profiling of P. viridis embryo can better understand the embryo toxic effects of BaP. Furthermore, it also suggests that RNA-seq is a superior tool for generating novel and valuable information for revealing the toxic effects caused by BaP at transcriptional level.
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Affiliation(s)
- Xiu Jiang
- State Key Laboratory of South China Sea Marine Resource Utilization, Hainan University, Haikou, 570228, China; College of Agriculture, Hainan University, Haikou, 570228, China
| | - Liguo Qiu
- State Key Laboratory of South China Sea Marine Resource Utilization, Hainan University, Haikou, 570228, China; College of Agriculture, Hainan University, Haikou, 570228, China
| | - Hongwei Zhao
- State Key Laboratory of South China Sea Marine Resource Utilization, Hainan University, Haikou, 570228, China; College of Environment and Plant Protection, Hainan University, Haikou 570228, China
| | - Qinqin Song
- College of Agriculture, Hainan University, Haikou, 570228, China
| | - Hailong Zhou
- State Key Laboratory of South China Sea Marine Resource Utilization, Hainan University, Haikou, 570228, China; College of Agriculture, Hainan University, Haikou, 570228, China.
| | - Qian Han
- State Key Laboratory of South China Sea Marine Resource Utilization, Hainan University, Haikou, 570228, China; College of Agriculture, Hainan University, Haikou, 570228, China
| | - Xiaoping Diao
- State Key Laboratory of South China Sea Marine Resource Utilization, Hainan University, Haikou, 570228, China; College of Agriculture, Hainan University, Haikou, 570228, China; College of Environment and Plant Protection, Hainan University, Haikou 570228, China.
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22
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Chen J, Tanguay RL, Xiao Y, Haggard DE, Ge X, Jia Y, Zheng Y, Dong Q, Huang C, Lin K. TBBPA exposure during a sensitive developmental window produces neurobehavioral changes in larval zebrafish. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 216:53-63. [PMID: 27239688 DOI: 10.1016/j.envpol.2016.05.059] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 05/05/2016] [Accepted: 05/21/2016] [Indexed: 06/05/2023]
Abstract
Tetrabromobisphenol A (TBBPA), one of the most widely used brominated flame retardants (BFRs), is a ubiquitous contaminant in the environment and in the human body. This study demonstrated that zebrafish embryos exposed to TBBPA during a sensitive window of 8-48 h post-fertilization (hpf) displayed morphological malformations and mortality. Zebrafish exposed exclusively between 48 and 96 hpf were phenotypically normal. TBBPA was efficiently absorbed and accumulated in zebrafish embryos, but was eliminated quickly when the exposure solution was removed. Larval behavior assays conducted at 120 hpf indicated that exposure to 5 μM TBBPA from 8 to 48 hpf produced larvae with significantly lower average activity and speed of movement in the normal condition than in those exposed from 48 to 96 hpf. Specifically, 8-48 hpf-exposed larvae spent significantly less time in both activity bursts and gross movements compared to control or 48-96 hpf exposed larvae. Consistent with the motor deficits, TBBPA induced apoptotic cell death, delayed cranial motor neuron development, inhibited primary motor neuron development and loosed muscle fiber during the early developmental stages. To further explore TBBPA-induced developmental and neurobehavioral toxicity, RNA-Seq analysis was used to identify early transcriptional changes following TBBPA exposure. In total, 1969 transcripts were significantly differentially expressed (P < 0.05, FDR < 0.05, 1.5-FC) upon TBBPA exposure. Functional and pathway analysis of the TBBPA transcriptional profile identified biological processes involved in nerve development, muscle filament sliding and contraction, and extracellular matrix disassembly and organization changed significantly. In addition, TBBPA also led to an elevation in the expression of genes encoding uridine diphosphate glucuronyl transferases (ugt), which could affect thyroxine (T4) metabolism and subsequently lead to neurobehavioral changes. In summary, TBBPA exposure during a narrow, sensitive developmental window perturbs various molecular pathways and results in neurobehavioral deficits in zebrafish.
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Affiliation(s)
- Jiangfei Chen
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, No.130, Mei Long Road, Shanghai 200237, China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Robert L Tanguay
- Environmental and Molecular Toxicology, The Sinnhuber Aquatic Research Laboratory and the Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97333, USA
| | - Yanyan Xiao
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Derik E Haggard
- Environmental and Molecular Toxicology, The Sinnhuber Aquatic Research Laboratory and the Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97333, USA
| | - Xiaoqing Ge
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yinhang Jia
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yi Zheng
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Qiaoxiang Dong
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Changjiang Huang
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China.
| | - Kuangfei Lin
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, No.130, Mei Long Road, Shanghai 200237, China.
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23
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Using digital gene expression profile to detect representational difference of Chlamys farreri genes after laboratory exposure to persistent organic pollutants. Genes Genomics 2015. [DOI: 10.1007/s13258-015-0360-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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