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Reyes-Perea AD, Guerrero-Netro HM, Meza-Serrano E, Estienne A, Price CA. The Mycotoxin De-Epoxy-Deoxynivalenol (DOM-1) Increases Endoplasmic Reticulum Stress in Ovarian Theca Cells. Toxins (Basel) 2023; 15:toxins15030228. [PMID: 36977119 PMCID: PMC10057718 DOI: 10.3390/toxins15030228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/09/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Deoxynivalenol (DON) is a major mycotoxin present in animal feed and negatively affects growth and reproduction in farm species, including pigs and cattle. The mechanism of DON action involves the ribotoxic stress response (RSR), and it acts directly on ovarian granulosa cells to increase cell death. In ruminants, DON is metabolized to de-epoxy-DON (DOM-1), which cannot activate the RSR but has been shown to increase cell death in ovarian theca cells. In the present study, we determined if DOM-1 acts on bovine theca cells through endoplasmic stress using an established serum-free cell culture model and to assess whether also DON activates endoplasmic stress in granulosa cells. The results show that DOM-1 increased the cleavage of ATF6 protein, increased the phosphorylation of EIF2AK3, and increased the abundance of cleaved XBP1 mRNA. Activation of these pathways led to an increased abundance of mRNA of the ER stress target genes GRP78, GRP94, and CHOP. Although CHOP is widely associated with autophagy, inhibition of autophagy did not alter the response of theca cells to DOM-1. The addition of DON to granulosa cells partially increased ER stress pathways but failed to increase the abundance of mRNA of ER stress target genes. We conclude that the mechanism of action of DOM-1, at least in bovine theca cells, is through the activation of ER stress.
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Affiliation(s)
- Angelica D Reyes-Perea
- Centre de Recherche en Reproduction et Fertilité (CRRF), Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
- Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico
| | - Hilda M Guerrero-Netro
- Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico
| | - Europa Meza-Serrano
- Centre de Recherche en Reproduction et Fertilité (CRRF), Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
| | - Anthony Estienne
- Centre de Recherche en Reproduction et Fertilité (CRRF), Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
| | - Christopher A Price
- Centre de Recherche en Reproduction et Fertilité (CRRF), Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
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2
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Tang M, Yuan D, Liao P. Berberine improves intestinal barrier function and reduces inflammation, immunosuppression, and oxidative stress by regulating the NF-κB/MAPK signaling pathway in deoxynivalenol-challenged piglets. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 289:117865. [PMID: 34358871 DOI: 10.1016/j.envpol.2021.117865] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 06/02/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
The aim of this study was to evaluate the effect of berberine (BBR) on the intestinal health of piglets exposed to deoxynivalenol (DON). A total of 180 weaned piglets were randomly allotted to 1 of 3 treatment groups with 10 replication pens per treatment and 6 piglets per pen. The treatments were basal diet, basal diet +4 mg/kg DON, and basal diet +4 mg/kg DON +40 mg/kg BBR. The experiment lasted for 21 d. BBR improved the growth performance of DON-challenged piglets. BBR could inhibit DON-induced intestinal injury by increasing the expression of serum antioxidant enzymes and T cell surface antigens and reducing the release of proinflammatory cytokines in the small intestine. BBR significantly increased the protein expression levels of zonula occludens 1 (ZO-1), Occludin and Claudin-1 in the ileal and jejunal mucosa and increased the morphological parameters of the jejunum. Moreover, we found that BBR significantly reduced the DON-induced gene and protein expression levels of ERK, JNK, and NF-κB in the jejunum and ileum. In conclusion, BBR can regulate DON-induced intestinal injury, immunosuppression and oxidative stress by regulating the NF-κB and MAPK signaling pathways and ultimately maintain the intestinal health of piglets.
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Affiliation(s)
- Min Tang
- The Third Department of Obstetrics and Gynecology, Mawangdui District of Hunan Provincial People's Hospital, Hunan, 410016, China.
| | - Daixiu Yuan
- Department of Medicine, Jishou University, Jishou, Hunan, 416000, China.
| | - Peng Liao
- Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan, 410125, China.
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Hou S, Ma J, Cheng Y, Wang H, Sun J, Yan Y. The toxicity mechanisms of DON to humans and animals and potential biological treatment strategies. Crit Rev Food Sci Nutr 2021; 63:790-812. [PMID: 34520302 DOI: 10.1080/10408398.2021.1954598] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Deoxynivalenol, also known as vomitotoxin, is produced by Fusarium, belonging to the group B of the trichothecene family. DON is widely polluted, mainly polluting cereal crops such as wheat, barley, oats, corn and related cereal products, which are closely related to lives of people and animals. At present, there have been articles summarizing DON induced toxicity, biological detoxification and the protective effect of natural products, but there is no systematic summary of this information. In addition to ribosome and endoplasmic reticulum, recent investigations support that mitochondrion is also organelles that DON can damage. DON can't directly act on mitochondria, but can indirectly cause mitochondrial damage and changes through other means. DON can indirectly inhibit mitochondrial biogenesis and mitochondrial electron transport chain activity, ATP production, and mitochondrial transcription and translation. This review will provide the latest progress on mitochondria as the research object, and systematically summarizes all the toxic mechanisms of DON. Here, we discuss DON induced mitochondrial-mediated apoptosis and various mitochondrial toxicity. For the toxicity of DON, many methods have been derived to prevent or reduce the toxicity. Biological detoxification and the antioxidant effect of natural products are potentially effective treatments for DON toxicity.
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Affiliation(s)
- Silu Hou
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Jingjiao Ma
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yuqiang Cheng
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Hengan Wang
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Jianhe Sun
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yaxian Yan
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
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4
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Felce SL, Farnie G, Dustin ML, Felce JH. RNA-Seq analysis of early transcriptional responses to activation in the leukaemic Jurkat E6.1 T cell line. Wellcome Open Res 2021; 5:42. [PMID: 36865034 PMCID: PMC9971649 DOI: 10.12688/wellcomeopenres.15748.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2021] [Indexed: 11/20/2022] Open
Abstract
Background: The leukaemia-derived Jurkat E6.1 cell line has been used as a model T cell in the study of many aspects of T cell biology, most notably activation in response to T cell receptor (TCR) engagement. Methods: We present whole-transcriptome RNA-Sequencing data for Jurkat E6.1 cells in the resting state and two hours post-activation via TCR and CD28. We compare early transcriptional responses in the presence and absence of the chemokines CXCL12 and CCL19, and perform a basic comparison between observed transcriptional responses in Jurkat E6.1 cells and those in primary human T cells using publicly deposited data. Results: Jurkat E6.1 cells have many of the hallmarks of standard T cell transcriptional responses to activation, but lack most of the depth of responses in primary cells. Conclusions: These data indicate that Jurkat E6.1 cells hence represent only a highly simplified model of early T cell transcriptional responses.
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Affiliation(s)
- Suet Ling Felce
- Structural Genomics Consortium, Botnar Research Centre, NDORMS, University of Oxford, Oxford, OX3 7LD, UK
| | - Gillian Farnie
- Structural Genomics Consortium, Botnar Research Centre, NDORMS, University of Oxford, Oxford, OX3 7LD, UK
| | - Michael L. Dustin
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, OX3 7FY, UK
| | - James H. Felce
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, OX3 7FY, UK
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He Y, Yin X, Dong J, Yang Q, Wu Y, Gong Z. Transcriptome Analysis of Caco-2 Cells upon the Exposure of Mycotoxin Deoxynivalenol and Its Acetylated Derivatives. Toxins (Basel) 2021; 13:167. [PMID: 33671637 PMCID: PMC7927021 DOI: 10.3390/toxins13020167] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/16/2021] [Accepted: 02/19/2021] [Indexed: 11/17/2022] Open
Abstract
Deoxynivalenol (DON), 3-acetyldeoxynivalenol (3-ADON) and 15-acetyldeoxynivalenol (15-ADON) are type B trichothecenes; one of the major pollutants in food and feed products. Although the toxicity of DON has been well documented, information on the toxicity of its acetylated derivative remains incomplete. To acquire more detailed insight into 3-ADON and 15-ADON, Caco-2 cells under 0.5 µM DON, 3-ADON and 15-ADON treatment for 24 h were subjected to RNA-seq analysis. In the present study, 2656, 3132 and 2425 differentially expressed genes (DEGs) were selected, respectively, and were enriched utilizing the Kyoto Encyclopedia of Genes and Genomes (KEGG) and the Gene Ontology (GO) database. The upregulation of ataxia-telangiectasia mutated kinase (ATM), WEE1 homolog 2 (WEE2) and downregulation of proliferating cell nuclear antigen (PCNA), minichromosome maintenance (MCMs), cyclin dependent kinase (CDKs), and E2Fs indicate that the three toxins induced DNA damage, inhibition of DNA replication and cell cycle arrest in Caco-2 cells. Additionally, the upregulation of sestrin (SENEs) and NEIL1 implied that the reason for DNA damage may be attributable to oxidative stress. Our study provides insight into the toxic mechanism of 3-ADON and 15-ADON.
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Affiliation(s)
- Yuyun He
- Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China; (Y.H.); (X.Y.); (J.D.); (Q.Y.)
| | - Xiaoyao Yin
- Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China; (Y.H.); (X.Y.); (J.D.); (Q.Y.)
| | - Jingjing Dong
- Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China; (Y.H.); (X.Y.); (J.D.); (Q.Y.)
| | - Qing Yang
- Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China; (Y.H.); (X.Y.); (J.D.); (Q.Y.)
| | - Yongning Wu
- China National Center for Food Safety Risk Assessment, NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Science, Beijing 100000, China;
| | - Zhiyong Gong
- Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China; (Y.H.); (X.Y.); (J.D.); (Q.Y.)
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The food contaminant deoxynivalenol provokes metabolic impairments resulting in non-alcoholic fatty liver (NAFL) in mice. Sci Rep 2020; 10:12072. [PMID: 32694515 PMCID: PMC7374573 DOI: 10.1038/s41598-020-68712-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 06/25/2020] [Indexed: 12/15/2022] Open
Abstract
The ribotoxin deoxynivalenol (DON) is a trichothecene found on cereals responsible for mycotoxicosis in both humans and farm animals. DON toxicity is characterized by reduced food intake, diminished nutritional efficiency and immunologic effects. The present study was designed to further characterize the alterations in energy metabolism induced by DON intoxication. We demonstrated that acute DON intoxication triggered liver steatosis associated with an altered expression of genes related to lipids oxidation, lipogenesis and lipolysis. This steatosis was concomitant to anorexia, hypoglycemia and a paradoxical transient insulin release. DON treatment resulted also in stimulation of central autonomic network regulating sympathetic outflow and adrenaline and glucocorticoids secretion. Furthermore, an increased expression of genes linked to inflammation and reticulum endoplasmic stress was observed in the liver of DON-treated mice. Finally, we propose that lipids mobilization from adipose tissues (AT) induced by DON intoxication drives hepatic steatosis since (1) genes encoding lipolytic enzymes were up-regulated in AT and (2) plasma concentration of triglycerides (TGs) and non-esterified fatty acids were increased during DON intoxication. Altogether, these data demonstrate that DON induced hormonal and metabolic dysregulations associated with a spectrum of hepatic abnormalities, evocative of a non-alcoholic fatty liver disease.
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7
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Felce SL, Farnie G, Dustin ML, Felce JH. RNA-Seq analysis of early transcriptional responses to activation in the leukaemic Jurkat E6.1 T cell line. Wellcome Open Res 2020; 5:42. [PMID: 36865034 PMCID: PMC9971649 DOI: 10.12688/wellcomeopenres.15748.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2020] [Indexed: 11/20/2022] Open
Abstract
Background: The leukaemia-derived Jurkat E6.1 cell line has been used as a model T cell in the study of many aspects of T cell biology, most notably activation in response to T cell receptor (TCR) engagement. Methods: We present whole-transcriptome RNA-Sequencing data for Jurkat E6.1 cells in the resting state and two hours post-activation via TCR and CD28. We compare early transcriptional responses in the presence and absence of the chemokines CXCL12 and CCL19, and perform a basic comparison between observed transcriptional responses in Jurkat E6.1 cells and those in primary human T cells using publicly deposited data. Results: Jurkat E6.1 cells have many of the hallmarks of standard T cell transcriptional responses to activation, but lack most of the depth of responses in primary cells. Conclusions: These data indicate that Jurkat E6.1 cells hence represent only a highly simplified model of early T cell transcriptional responses.
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Affiliation(s)
- Suet Ling Felce
- Structural Genomics Consortium, Botnar Research Centre, NDORMS, University of Oxford, Oxford, OX3 7LD, UK
| | - Gillian Farnie
- Structural Genomics Consortium, Botnar Research Centre, NDORMS, University of Oxford, Oxford, OX3 7LD, UK
| | - Michael L. Dustin
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, OX3 7FY, UK
| | - James H. Felce
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, OX3 7FY, UK
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8
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Dual Function of a Novel Bacterium, Slackia sp. D-G6: Detoxifying Deoxynivalenol and Producing the Natural Estrogen Analogue, Equol. Toxins (Basel) 2020; 12:toxins12020085. [PMID: 31991913 PMCID: PMC7076803 DOI: 10.3390/toxins12020085] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/16/2020] [Accepted: 01/24/2020] [Indexed: 01/03/2023] Open
Abstract
Deoxynivalenol (DON) is a highly abundant mycotoxin that exerts many adverse effects on humans and animals. Much effort has been made to control DON in the past, and bio-transformation has emerged as the most promising method. However, useful and effective application of bacterial bio-transformation for the purpose of inhibiting DON remains urgently needed. The current study isolated a novel DON detoxifying bacterium, Slackia sp. D-G6 (D-G6), from chicken intestines. D-G6 is a Gram-positive, non-sporulating bacterium, which ranges in size from 0.2–0.4 μm × 0.6–1.0 μm. D-G6 de-epoxidizes DON into a non-toxic form called DOM-1. Optimum conditions required for degradation of DON are 37–47 °C and a pH of 6–10 in WCA medium containing 50% chicken intestinal extract. Besides DON detoxification, D-G6 also produces equol (EQL) from daidzein (DZN), which shows high estrogenic activity, and prevents estrogen-dependent and age-related diseases effectively. Furthermore, the genome of D-G6 was sequenced and characterized. Thirteen genes that show potential for DON de-epoxidation were identified via comparative genomics. In conclusion, a novel bacterium that exhibits the dual function of detoxifying DON and producing the beneficial natural estrogen analogue, EQL, was identified.
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Huang C, Feng L, Liu XA, Jiang WD, Wu P, Liu Y, Jiang J, Kuang SY, Tang L, Zhou XQ. The toxic effects and potential mechanisms of deoxynivalenol on the structural integrity of fish gill: Oxidative damage, apoptosis and tight junctions disruption. Toxicon 2020; 174:32-42. [DOI: 10.1016/j.toxicon.2019.12.151] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 11/14/2019] [Accepted: 12/19/2019] [Indexed: 12/15/2022]
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10
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Mitochondrion: A new molecular target and potential treatment strategies against trichothecenes. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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11
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Funnell-Harris DL, Graybosch RA, O'Neill PM, Duray ZT, Wegulo SN. Amylose-Free (" waxy") Wheat Colonization by Fusarium spp. and Response to Fusarium Head Blight. PLANT DISEASE 2019; 103:972-983. [PMID: 30840842 DOI: 10.1094/pdis-05-18-0726-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hexaploid waxy wheat (Triticum aestivum L.) has null mutations in Wx genes and grain lacking amylose with increased digestibility and usability for specialty foods. The waxy cultivar Mattern is susceptible to Fusarium head blight (FHB) caused by Fusarium graminearum species complex, which produces the mycotoxin deoxynivalenol (DON). In experiment 1, conducted during low natural FHB, grain from waxy breeding lines, Mattern, and wild-type breeding lines and cultivars were assessed for Fusarium infection and DON concentration. Nine Fusarium species and species complexes were detected from internally infected (disinfested) grain; F. graminearum infections were not different between waxy and wild-type. Surface- and internally infected grain (nondisinfested) had greater numbers of Fusarium isolates across waxy versus wild-type, but F. graminearum-like infections were similar; however, DON levels were higher in waxy. In experiment 2, conducted during a timely epidemic, disease severity, Fusarium-damaged kernels (FDK), and DON were assessed for waxy breeding lines, Mattern, and wild-type cultivars. Disease severity and FDK were not significantly different from wild-type, but DON was higher in waxy than wild-type lines. Across both experiments, waxy breeding lines, Plant Introductions 677876 and 677877, responded similarly to FHB as moderately resistant wild-type cultivar Overland, showing promise for breeding advanced waxy cultivars with reduced FHB susceptibility.
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Affiliation(s)
- Deanna L Funnell-Harris
- 1 Wheat, Sorghum and Forage Research Unit, United States Department of Agriculture-Agricultural Research Service, Lincoln, NE 68583
- 2 Department of Plant Pathology, University of Nebraska, Lincoln, NE 68583; and
| | - Robert A Graybosch
- 1 Wheat, Sorghum and Forage Research Unit, United States Department of Agriculture-Agricultural Research Service, Lincoln, NE 68583
- 3 Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE 68583
| | - Patrick M O'Neill
- 1 Wheat, Sorghum and Forage Research Unit, United States Department of Agriculture-Agricultural Research Service, Lincoln, NE 68583
- 2 Department of Plant Pathology, University of Nebraska, Lincoln, NE 68583; and
| | - Zachary T Duray
- 1 Wheat, Sorghum and Forage Research Unit, United States Department of Agriculture-Agricultural Research Service, Lincoln, NE 68583
- 2 Department of Plant Pathology, University of Nebraska, Lincoln, NE 68583; and
| | - Stephen N Wegulo
- 2 Department of Plant Pathology, University of Nebraska, Lincoln, NE 68583; and
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Woelflingseder L, Del Favero G, Blažević T, Heiss EH, Haider M, Warth B, Adam G, Marko D. Impact of glutathione modulation on the toxicity of the Fusarium mycotoxins deoxynivalenol (DON), NX-3 and butenolide in human liver cells. Toxicol Lett 2018; 299:104-117. [PMID: 30244016 DOI: 10.1016/j.toxlet.2018.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/07/2018] [Accepted: 09/17/2018] [Indexed: 12/21/2022]
Abstract
DON, NX-3 and butenolide (BUT) are secondary metabolites formed by Fusarium graminearum. Evidence for formation of DON-glutathione adducts exists in plants, and also in human liver (HepG2) cells mass spectrometric evidence for GSH-adduct formation was reported. NX-3 is a DON derivative lacking structural features for Thiol-Michael addition, while BUT has the structural requirements (conjugated double bond and keto group). In the present study, we addressed whether these structural differences affect levels of intracellular reactive oxygen species in HepG2 cells, and if intracellular GSH levels influence toxic effects induced by DON, NX-3 and BUT. Pre-treatment with an inhibitor of GSH bio-synthesis, L-buthionine-[S,R]-sulfoximine, aggravated substantially BUT-induced cytotoxicity (≥50 μM, 24 h), but only marginally affected the cytotoxicity of DON and NX-3 indicating that GSH-mediated detoxification is of minor importance in HepG2 cells. We further investigated whether BUT, a compound inducing alone low oral toxicity, might affect the toxicity of DON. Under different experimental designs with respect to pre- and/or co-incubations, BUT was found to contribute to the combinatorial cytotoxicity, exceeding the toxic effect of DON alone. The observed combinatorial effects underline the potential contribution of secondary metabolites like BUT, considered to be alone of low toxicological relevance, to the toxicity of DON or structurally related trichothecenes, arguing for further studies on the toxicological relevance of naturally occurring mixtures.
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Affiliation(s)
- Lydia Woelflingseder
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
| | - Giorgia Del Favero
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
| | - Tina Blažević
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
| | - Elke H Heiss
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
| | - Maximilian Haider
- Institute for Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163, 1060 Vienna, Austria.
| | - Benedikt Warth
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
| | - Gerhard Adam
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Strasse 24, 3430 Tulln, Austria.
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
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Alonso-Garrido M, Escrivá L, Manyes L, Font G. Enniatin B induces expression changes in the electron transport chain pathway related genes in lymphoblastic T-cell line. Food Chem Toxicol 2018; 121:437-443. [PMID: 30227181 DOI: 10.1016/j.fct.2018.09.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/06/2018] [Accepted: 09/10/2018] [Indexed: 02/07/2023]
Abstract
Enniatin B is a ionophoric and lipophilic mycotoxin which reaches the bloodstream and has the ability to penetrate into cellular membranes. The purpose of this study was to reveal changes in the gene expression profile caused by enniatin B in human Jurkat lymphoblastic T-cells after 24 h of exposure at 1.5, 3 and 5 μM by next generation sequencing. It was found that up to 27% of human genome expression levels were significantly altered (5750 genes for both down-regulation and up-regulation). In the three enniatin B concentrations studied 245 differentially expressed genes were found to be overlapped, 83 were down and 162 up-regulated. ConsensusPathDB analysis of over-representation of differentially expressed genes provided a list of gene ontology terms in which several biological processes related to nucleoside monophosphate metabolic process, respiratory chain complex, electron transport chain, oxidative phosphorylation and cellular respiration were the most altered. Also, an interesting correlation was found between enniatin B toxicity and the up-regulation of the UCP protein complex. In summary, the transcriptomic analysis revealed that mitochondria are the organelles showing more related differentially expressed genes. Consequently, differentially expressed genes involved in biological processes, molecular functions and pathways related to mitochondrial metabolism and respiration were significantly changed.
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Affiliation(s)
- M Alonso-Garrido
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Burjassot, Spain
| | - L Escrivá
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Burjassot, Spain
| | - L Manyes
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Burjassot, Spain.
| | - G Font
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Burjassot, Spain
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Huang C, Wu P, Jiang WD, Liu Y, Zeng YY, Jiang J, Kuang SY, Tang L, Zhang YA, Zhou XQ, Feng L. Deoxynivalenol decreased the growth performance and impaired intestinal physical barrier in juvenile grass carp (Ctenopharyngodon idella). FISH & SHELLFISH IMMUNOLOGY 2018; 80:376-391. [PMID: 29906621 DOI: 10.1016/j.fsi.2018.06.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 06/01/2018] [Accepted: 06/07/2018] [Indexed: 06/08/2023]
Abstract
Deoxynivalenol (DON) is one of the most common mycotoxin contaminants of animal feed worldwide and brings significant threats to the animal production. However, studies concerning the effect of DON on fish intestine are scarce. This study explored the effects of DON on intestinal physical barrier in juvenile grass carp (Ctenopharyngodon idella). A total of 1440 juvenile grass carp (12.17 ± 0.01 g) were fed six diets containing graded levels of DON (27, 318, 636, 922, 1243 and 1515 μg/kg diet) for 60 days. This study for the first time documented that DON caused body malformation in fish, and histopathological lesions, oxidative damage, declining antioxidant capacity, cell apoptosis and destruction of tight junctions in the intestine of fish. The results indicated that compared with control group (27 μg/kg diet), DON: (1) increased the reactive oxygen species (ROS), malondialdehyde (MDA) and protein carbonyl (PC) content, and up-regulated the mRNA levels of Kelch-like-ECH-associated protein 1 (Keap1: Keap1a but not Keap1b), whereas decreased glutathione (GSH) content and antioxidant enzymes activities, and down-regulated the mRNA levels of antioxidant enzymes (except GSTR in MI) and NF-E2-related factor 2 (Nrf2), as well as the protein levels of Nrf2 in fish intestine. (2) up-regulated cysteinyl aspartic acid-protease (caspase) -3, -7, -8, -9, apoptotic protease activating factor-1 (Apaf-1), Bcl2-associated X protein (Bax), Fas ligand (FasL) and c-Jun N-terminal protein kinase (JNK) mRNA levels, whereas down-regulated B-cell lymphoma-2 (bcl-2) and myeloid cell leukemia-1 (Mcl-1) mRNA levels in fish intestine. (3) down-regulated the mRNA levels of ZO-1, ZO-2b, occludin, claudin-c, -f, -7a, -7b, -11 (except claudin-b and claudin-3c), whereas up-regulated the mRNA levels of claudin-12, -15a (not -15b) and myosin light chain kinase (MLCK) in fish intestine. All above data indicated that DON caused the oxidative damage, apoptosis and the destruction of tight junctions via Nrf2, JNK and MLCK signaling in the intestine of fish, respectively. Finally, based on PWG, FE, PC and MDA, the safe dose of DON for grass carp were all estimated to be 318 μg/kg diet.
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Affiliation(s)
- Chen Huang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yun-Yun Zeng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jun Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China.
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15
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Exposure to field vs. storage wheat dust: different consequences on respiratory symptoms and immune response among grain workers. Int Arch Occup Environ Health 2018; 91:745-757. [PMID: 29804141 DOI: 10.1007/s00420-018-1322-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 05/22/2018] [Indexed: 12/23/2022]
Abstract
PURPOSE The aim of this study was to understand the differential acute effects of two distinct wheat-related dusts, such as field or stored wheat dust handling, on workers' health and how those effects evolved at 6 month intervals. METHODS Exposure, work-related symptoms, changes in lung function, and blood samples of 81 workers handling wheat and 61 controls were collected during the high exposure season and 6 months after. Specific IgG, IgE, and precipitins against 12 fungi isolated from wheat dust were titrated by enzyme-linked immunosorbent assay, dissociation-enhanced lanthanide fluorescence immunoassay, and electrosyneresis. The level of fungi was determined in the workers' environment. Levels of exhaled fraction of nitrogen monoxide (FENO) and total IgE were obtained. Exposure response associations were investigated by mixed logistic and linear regression models. RESULTS The recent exposure to field wheat dust was associated with a higher prevalence for five of six self-reported airway symptoms and with a lower FENO than those in the control population. Exposure to stored wheat dust was only associated with cough. No acute impact of exposure on respiratory function was observed. Exposure to field wheat dust led to workers' sensitization against the three field fungi Aureobasidum, Cryptococcus, and Phoma, although exposure to storage wheat dust was associated with tolerance. The level of Ig remained stable 6 months after exposure. CONCLUSION The clinical picture of workers exposed to field or storage wheat dust differed. The systematic characterization of the aerosol microbial profile may help to understand the reasons for those differences.
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16
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Shi D, Zhou J, Zhao L, Rong X, Fan Y, Hamid H, Li W, Ji C, Ma Q. Alleviation of mycotoxin biodegradation agent on zearalenone and deoxynivalenol toxicosis in immature gilts. J Anim Sci Biotechnol 2018; 9:42. [PMID: 29796255 PMCID: PMC5956560 DOI: 10.1186/s40104-018-0255-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 04/17/2018] [Indexed: 11/21/2022] Open
Abstract
Background The current study was carried out to evaluate the effects of mycotoxin biodegradation agent (MBA, composed of Bacillus subtilis ANSB01G and Devosia sp. ANSB714) on relieving zearalenone (ZEA) and deoxynivalenol (DON) toxicosis in immature gilts. Methods A total of forty pre-pubertal female gilts (61.42 ± 1.18 kg) were randomly allocated to four diet treatments: CO (positive control); MO (negative control, ZEA 596.86 μg/kg feed and DON 796 μg/kg feed); COA (CO + 2 g MBA/kg feed); MOA (MO + 2 g MBA/kg feed). Each treatment contained 10 replicates with 1 gilt per replicate. Gilts were housed in an environmentally controlled room with the partially slatted floor. Results During the entire experimental period of 28 d, average daily gain (ADG) and average daily feed intake (ADFI) of gilts in MO group was significantly reduced compared with those in CO group. The vulva size of gilts was significantly higher in MO group than CO group. In addition, significant increases in the plasma levels of IgA, IgG, IL-8, IL-10 and PRL were determined in MO group compared with that in CO group. ZEA and DON in the diet up-regulated apoptotic caspase-3 in ovaries and uteri, along with down-regulated the anti-apoptotic protein Bcl-2 in ovaries. The supplementation of MBA into diets co-contaminated with ZEA and DON significantly increased ADG, decreased the vulva sizes, reduced the levels of IgG, IL-8 and PRL in plasma, and regulated apoptosis in ovaries and uteri of gilts. Conclusions The present results indicated that feeding diet contaminated with ZEA and DON simultaneously (596.86 μg/kg + 796 μg/kg) had detrimental effects on growth performance, plasma immune function and reproductive status of gilts. And MBA could reduce the negative impacts of these two toxins, believed as a promising feed additive for mitigating toxicosis of ZEA and DON at low levels in gilts.
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Affiliation(s)
- Donghui Shi
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China.,2Liaoning Medical University, Jinzhou, 121001 People's Republic of China
| | - Jianchuan Zhou
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China.,Fuqing Fengze Agricultural Science and Technology Development Co. Ltd., Fuzhou, 350011 People's Republic of China
| | - Lihong Zhao
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China
| | - Xiaoping Rong
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China
| | - Yu Fan
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China.,State Key Laboratory of Direct-Fed Microbial Engineering, Beijing, 100193 People's Republic of China
| | - Humera Hamid
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China
| | - Wenqiang Li
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China.,2Liaoning Medical University, Jinzhou, 121001 People's Republic of China
| | - Cheng Ji
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China
| | - Qiugang Ma
- 1State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, 100193 People's Republic of China
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17
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Manyes L, Escrivá L, Ruiz M, Juan-García A. Beauvericin and enniatin B effects on a human lymphoblastoid Jurkat T-cell model. Food Chem Toxicol 2018. [DOI: 10.1016/j.fct.2018.03.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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18
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Soler L, Oswald I. The importance of accounting for sex in the search of proteomic signatures of mycotoxin exposure. J Proteomics 2018; 178:114-122. [DOI: 10.1016/j.jprot.2017.12.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 12/18/2017] [Accepted: 12/22/2017] [Indexed: 10/18/2022]
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19
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Liao Y, Peng Z, Chen L, Nüssler AK, Liu L, Yang W. Deoxynivalenol, gut microbiota and immunotoxicity: A potential approach? Food Chem Toxicol 2018; 112:342-354. [DOI: 10.1016/j.fct.2018.01.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 11/13/2017] [Accepted: 01/09/2018] [Indexed: 12/18/2022]
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20
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Escrivá L, Jennen D, Caiment F, Manyes L. Transcriptomic study of the toxic mechanism triggered by beauvericin in Jurkat cells. Toxicol Lett 2017; 284:213-221. [PMID: 29203277 DOI: 10.1016/j.toxlet.2017.11.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/10/2017] [Accepted: 11/27/2017] [Indexed: 01/28/2023]
Abstract
Beauvericin (BEA), an ionophoric cyclic hexadepsipeptide mycotoxin, is able to increase oxidative stress by altering membrane ion permeability and uncoupling oxidative phosphorylation. A toxicogenomic study was performed to investigate gene expression changes triggered by BEA exposure (1.5, 3 and 5 μM; 24 h) in Jurkat cells through RNA-sequencing and differential gene expression analysis. Perturbed gene expression was observed in a concentration dependent manner, with 43 differentially expressed genes (DEGs) overlapped in the three studied concentrations. Gene ontology (GO) analysis showed several biological processes related to electron transport chain, oxidative phosphorylation, and cellular respiration significantly altered. Molecular functions linked to mitochondrial respiratory chain and oxidoreductase activity were over-represented (q-value < 0.01). Pathway analysis revealed oxidative phosphorylation and electron transport chain as the most significantly altered pathways in all studied doses (z-score > 1.96; adj p-value < 0.05). 77 genes involved in the respiratory chain were significantly down-regulated at least at one dose. Moreover, 21 genes related to apoptosis and programmed cell death, and 12 genes related to caspase activity were significantly altered, mainly affecting initiator caspases 8, 9 and 10. The results demonstrated BEA-induced mitochondrial damage affecting the respiratory chain, and pointing to apoptosis through the caspase cascade in human lymphoblastic T cells.
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Affiliation(s)
- L Escrivá
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Burjassot, Spain.
| | - D Jennen
- Department of Toxicogenomics, GROW School for Oncology and Developmental Biology, Maastricht University, The Netherlands
| | - F Caiment
- Department of Toxicogenomics, GROW School for Oncology and Developmental Biology, Maastricht University, The Netherlands
| | - L Manyes
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Burjassot, Spain
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21
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Ferreira Lopes S, Vacher G, Ciarlo E, Savova-Bianchi D, Roger T, Niculita-Hirzel H. Primary and Immortalized Human Respiratory Cells Display Different Patterns of Cytotoxicity and Cytokine Release upon Exposure to Deoxynivalenol, Nivalenol and Fusarenon-X. Toxins (Basel) 2017; 9:toxins9110337. [PMID: 29068378 PMCID: PMC5705952 DOI: 10.3390/toxins9110337] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/17/2017] [Accepted: 10/20/2017] [Indexed: 12/14/2022] Open
Abstract
The type B trichothecene mycotoxins deoxynivalenol (DON), nivalenol (NIV) and fusarenon-X (FX) are structurally related secondary metabolites frequently produced by Fusarium on wheat. Consequently, DON, NIV and FX contaminate wheat dusts, exposing grain workers to toxins by inhalation. Those trichothecenes at low, relevant, exposition concentrations have differential effects on intestinal cells, but whether such differences exist with respiratory cells is mostly unknown, while it is required to assess the combined risk of exposure to mycotoxins. The goal of the present study was to compare the effects of DON, NIV and FX alone or in combination on the viability and IL-6 and IL-8-inducing capacity of human epithelial cells representative of the respiratory tract: primary human airway epithelial cells of nasal (hAECN) and bronchial (hAECB) origin, and immortalized human bronchial (16HBE14o-) and alveolar (A549) epithelial cell lines. We report that A549 cells are particularly resistant to the cytotoxic effects of mycotoxins. FX is more toxic than DON and NIV for all epithelial cell types. Nasal and bronchial primary cells are more sensitive than bronchial and alveolar cell lines to combined mycotoxin mixtures at low concentrations, although they are less sensitive to mycotoxins alone. Interactions between mycotoxins at low concentrations are rarely additive and are observed only for DON/NIV and NIV/FX on hAECB cells and DON/NIV/FX on A549 cells. Most interactions at low mycotoxin concentrations are synergistic, antagonistic interactions being observed only for DON/FX on hAECB, DON/NIV on 16HBE14o- and NIV/FX on A549 cells. DON, NIV and FX induce, albeit at different levels, IL-6 and IL-8 release by all cell types. However, NIV and FX at concentrations of low cytotoxicity induce IL-6 release by hAECB and A549 cells, and IL-8 release by hAECN cells. Overall, these data suggest that combined exposure to mycotoxins at low concentrations have a stronger effect on primary nasal epithelial cells than on bronchial epithelial cells and activate different inflammatory pathways. This information is particularly relevant for future studies about the hazard of occupational exposure to mycotoxins by inhalation and its impact on the respiratory tract.
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Affiliation(s)
- Silvia Ferreira Lopes
- Service of Occupational Hygiene, Institute for Work and Health (IST), University of Lausanne and Geneva, Epalinges 1066, Switzerland.
| | - Gaëlle Vacher
- Service of Occupational Hygiene, Institute for Work and Health (IST), University of Lausanne and Geneva, Epalinges 1066, Switzerland.
| | - Eleonora Ciarlo
- Infectious Diseases Service, Lausanne University Hospital, Epalinges 1066, Switzerland.
| | - Dessislava Savova-Bianchi
- Service of Occupational Hygiene, Institute for Work and Health (IST), University of Lausanne and Geneva, Epalinges 1066, Switzerland.
| | - Thierry Roger
- Infectious Diseases Service, Lausanne University Hospital, Epalinges 1066, Switzerland.
| | - Hélène Niculita-Hirzel
- Service of Occupational Hygiene, Institute for Work and Health (IST), University of Lausanne and Geneva, Epalinges 1066, Switzerland.
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22
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Thiel CS, Huge A, Hauschild S, Tauber S, Lauber BA, Polzer J, Paulsen K, Lier H, Engelmann F, Schmitz B, Schütte A, Layer LE, Ullrich O. Stability of gene expression in human T cells in different gravity environments is clustered in chromosomal region 11p15.4. NPJ Microgravity 2017; 3:22. [PMID: 28868355 PMCID: PMC5579209 DOI: 10.1038/s41526-017-0028-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 07/10/2017] [Accepted: 07/20/2017] [Indexed: 12/22/2022] Open
Abstract
In the last decades, a plethora of in vitro studies with living human cells contributed a vast amount of knowledge about cellular and molecular effects of microgravity. Previous studies focused mostly on the identification of gravity-responsive genes, whereas a multi-platform analysis at an integrative level, which specifically evaluates the extent and robustness of transcriptional response to an altered gravity environment was not performed so far. Therefore, we investigated the stability of gene expression response in non-activated human Jurkat T lymphocytic cells in different gravity environments through the combination of parabolic flights with a suborbital ballistic rocket and 2D clinostat and centrifuge experiments, using strict controls for excluding all possible other factors of influence. We revealed an overall high stability of gene expression in microgravity and identified olfactory gene expression in the chromosomal region 11p15.4 as particularly robust to altered gravity. We identified that classical reference genes ABCA5, GAPDH, HPRT1, PLA2G4A, and RPL13A were stably expressed in all tested gravity conditions and platforms, while ABCA5 and GAPDH were also known to be stably expressed in U937 cells in all gravity conditions. In summary, 10-20% of all transcripts remained totally unchanged in any gravitational environment tested (between 10-4 and 9 g), 20-40% remained unchanged in microgravity (between 10-4 and 10-2 g) and 97-99% were not significantly altered in microgravity if strict exclusion criteria were applied. Therefore, we suppose a high stability of gene expression in microgravity. Comparison with other stressors suggests that microgravity alters gene expression homeostasis not stronger than other environmental factors.
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Affiliation(s)
- Cora S Thiel
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Andreas Huge
- Core Facility Genomic, Medical Faculty of Muenster, University of Muenster, Albert-Schweitzer-Campus 1, D3, Domagstrasse 3, D-48149 Muenster, Germany
| | - Swantje Hauschild
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Svantje Tauber
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Beatrice A Lauber
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Jennifer Polzer
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Katrin Paulsen
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Hartwin Lier
- KEK GmbH, Kemberger Str. 5, D-06905 Bad Schmiedeberg, Germany
| | - Frank Engelmann
- KEK GmbH, Kemberger Str. 5, D-06905 Bad Schmiedeberg, Germany.,Ernst-Abbe-Hochschule Jena, Carl-Zeiss-Promenade 2, D-07745 Jena, Germany
| | - Burkhard Schmitz
- Airbus Defence and Space, Airbus DS GmbH, D-28199 Bremen, Germany
| | - Andreas Schütte
- Airbus Defence and Space, Airbus DS GmbH, D-28199 Bremen, Germany
| | - Liliana E Layer
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Oliver Ullrich
- Institute of Anatomy, Faculty of Medicine, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,Department of Machine Design, Engineering Design and Product Development, Institute of Mechanical Engineering, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany.,Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,Institute of Space Life Sciences, School of Life Sciences, Beijing Institute of Technology, Beijing, 100081 China
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23
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Ji J, Zhu P, Cui F, Pi F, Zhang Y, Sun X. The disorder metabolic profiling in kidney and spleen of mice induced by mycotoxins deoxynivalenol through gas chromatography mass spectrometry. CHEMOSPHERE 2017; 180:267-274. [PMID: 28411543 DOI: 10.1016/j.chemosphere.2017.03.129] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/22/2017] [Accepted: 03/29/2017] [Indexed: 06/07/2023]
Abstract
Gas chromatography mass spectrometry (GC-MS) based metabolomics strategy was implemented for the metabolites detection in kidney and spleen samples of mice, which were treated with 2 mg kg-1 deoxynivalenol (DON), through intragastric administration for three weeks, for studying the toxicity of DON on the metabolic profiling in kidney and spleen. The spectrum was deconvoluted, aligned and identified with MS DIAL, equipped with Fiehn library. And the data matrix was processed with univariate analysis and multivariate analysis for selection of metabolites with VIP >1, t-test p value < 0.05. The metabolic pathway analysis was analyzed with MetaMapp and drew by CytoScape. Result shows that DON could induce an increased protein synthesis to repair the damaged membrane protein structure, in both kidney and spleen, with decrease of valine, leucine and phenylalanine, et al. essential precursors for protein synthesis and energy production; the energy metabolism in kidney disordered by DON, with the decreasing of ribitol, glycerol 1-phosphate, et al. Furthermore, DON could lead to the disorder in immunity function and nucleotide metabolism in spleen, with decreasing trend of cytidine and alanine.
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Affiliation(s)
- Jian Ji
- School of Food Science, State Key Laboratory of Food Science and Technology, National Engineering Research Center for Functional Foods, Jiangnan University, Wuxi, Jiangsu, 214122, China; Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
| | - Pei Zhu
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, 200436, China; Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
| | - Fangchao Cui
- School of Food Science, State Key Laboratory of Food Science and Technology, National Engineering Research Center for Functional Foods, Jiangnan University, Wuxi, Jiangsu, 214122, China; Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
| | - Fuwei Pi
- School of Food Science, State Key Laboratory of Food Science and Technology, National Engineering Research Center for Functional Foods, Jiangnan University, Wuxi, Jiangsu, 214122, China; Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
| | - Yinzhi Zhang
- School of Food Science, State Key Laboratory of Food Science and Technology, National Engineering Research Center for Functional Foods, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Xiulan Sun
- School of Food Science, State Key Laboratory of Food Science and Technology, National Engineering Research Center for Functional Foods, Jiangnan University, Wuxi, Jiangsu, 214122, China; Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China.
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24
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Forthcoming Challenges in Mycotoxins Toxicology Research for Safer Food-A Need for Multi-Omics Approach. Toxins (Basel) 2017; 9:toxins9010018. [PMID: 28054977 PMCID: PMC5308250 DOI: 10.3390/toxins9010018] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/29/2016] [Accepted: 01/02/2017] [Indexed: 01/18/2023] Open
Abstract
The presence of mycotoxins in food represents a severe threat for public health and welfare, and poses relevant research challenges in the food toxicology field. Nowadays, food toxicologists have to provide answers to food-related toxicological issues, but at the same time they should provide the appropriate knowledge in background to effectively support the evidence-based decision-making in food safety. Therefore, keeping in mind that regulatory actions should be based on sound scientific findings, the present opinion addresses the main challenges in providing reliable data for supporting the risk assessment of foodborne mycotoxins.
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25
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Wang X, Zuo Z, Zhao C, Zhang Z, Peng G, Cao S, Hu Y, Yu S, Zhong Z, Deng J, Ren Z. Protective role of selenium in the activities of antioxidant enzymes in piglet splenic lymphocytes exposed to deoxynivalenol. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 47:53-61. [PMID: 27620958 DOI: 10.1016/j.etap.2016.09.003] [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: 05/31/2016] [Revised: 08/29/2016] [Accepted: 09/06/2016] [Indexed: 06/06/2023]
Abstract
We evaluated the effects of selenium (Se) on antioxidant enzymes of piglet splenic lymphocytes exposed to deoxynivalenol (DON). We measured cell viability, the activities of several antioxidant enzymes, and lactate dehydrogenase (LDH), as well as total antioxidant capacity (T-AOC) and the levels of malonaldehyde (MDA) and hydrogen peroxide (H2O2). We found that DON exposure increased the concentrations of LDH, MDA, and H2O2 in all experimental groups in a dose-dependent manner, while the concentrations of other antioxidant enzymes were decreased. In Se-pretreated DON-exposed cells, damage to antioxidant enzymes was reduced, especially in the lower-dose DON groups over longer exposure times. These results may indicate that in piglet splenic lymphocytes, Se can alleviate DON-induced damage to antioxidant enzymes by improving glutathione peroxidase activity. Se may function as a potential antioxidative agent to alleviate DON-induced oxidative stress.
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Affiliation(s)
- Xuemei Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Chuanping Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Zhuo Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Guangneng Peng
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Suizhong Cao
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Yanchun Hu
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Shumin Yu
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Zhijun Zhong
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
| | - Zhihua Ren
- College of Veterinary Medicine, Sichuan Agricultural University, Sichuan Province Key Laboratory of Animal Disease & Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Chengdu 611130, China.
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GC-TOF/MS-based metabolomics approach to study the cellular immunotoxicity of deoxynivalenol on murine macrophage ANA-1 cells. Chem Biol Interact 2016; 256:94-101. [DOI: 10.1016/j.cbi.2016.06.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 06/09/2016] [Accepted: 06/10/2016] [Indexed: 11/22/2022]
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Microbial biotransformation of DON: molecular basis for reduced toxicity. Sci Rep 2016; 6:29105. [PMID: 27381510 PMCID: PMC4933977 DOI: 10.1038/srep29105] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 06/14/2016] [Indexed: 11/08/2022] Open
Abstract
Bacteria are able to de-epoxidize or epimerize deoxynivalenol (DON), a mycotoxin, to deepoxy-deoxynivalenol (deepoxy-DON or DOM-1) or 3-epi-deoxynivalenol (3-epi-DON), respectively. Using different approaches, the intestinal toxicity of 3 molecules was compared and the molecular basis for the reduced toxicity investigated. In human intestinal epithelial cells, deepoxy-DON and 3-epi-DON were not cytotoxic, did not change the oxygen consumption or impair the barrier function. In intestinal explants, exposure for 4 hours to 10 μM DON induced intestinal lesions not seen in explants treated with deepoxy-DON and 3-epi-DON. A pan-genomic transcriptomic analysis was performed on intestinal explants. 747 probes, representing 323 genes, were differentially expressed, between DON-treated and control explants. By contrast, no differentially expressed genes were observed between control, deepoxy-DON and 3-epi-DON treated explants. Both DON and its biotransformation products were able to fit into the pockets of the A-site of the ribosome peptidyl transferase center. DON forms three hydrogen bonds with the A site and activates MAPKinases (mitogen-activated protein kinases). By contrast deepoxy-DON and 3-epi-DON only form two hydrogen bonds and do not activate MAPKinases. Our data demonstrate that bacterial de-epoxidation or epimerization of DON altered their interaction with the ribosome, leading to an absence of MAPKinase activation and a reduced toxicity.
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Tokarz SA, DeValk J, Luo W, Pattnaik BR, Schrodi SJ, Pillers DAM. Cell line donor genotype and its influence on experimental phenotype: Toll-like receptor SNPs and potential variability in innate immunity. Mol Genet Metab 2016; 118:147-152. [PMID: 27324283 DOI: 10.1016/j.ymgme.2016.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/21/2016] [Accepted: 04/21/2016] [Indexed: 11/28/2022]
Abstract
Cell lines are used to model a disease and provide valuable information regarding phenotype, mechanism, and response to novel therapies. Derived from individuals of diverse genetic backgrounds, the cell's genetic complement predicts the phenotype, and although some lines have been sequenced, little emphasis has been placed on genotyping. Toll-like receptors (TLRs) are essential in initiating the inflammatory cascade in response to infection. TLR single nucleotide polymorphism (SNP) alleles may predict an altered innate immune response: a SNP can affect TLR-dependent pathways and may alter experimental results. Thus, genotype variation may have far-reaching implications when using cell lines to model phenotypes. We recommend that cell lines be genotyped and cataloged in a fashion similar to that used for bacteria, with cumulative information being archived in an accessible central database to facilitate the understanding of SNP cell phenotypes reported in the literature.
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Affiliation(s)
- Sara A Tokarz
- Division of Neonatology & Newborn Nursery, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Jessica DeValk
- Division of Neonatology & Newborn Nursery, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Wenxiang Luo
- Division of Neonatology & Newborn Nursery, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Bikash R Pattnaik
- Division of Neonatology & Newborn Nursery, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Ophthalmology and Visual Sciences, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53706, USA; McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Steven J Schrodi
- Computation and Informatics in Biology and Medicine, University of Wisconsin-Madison, Madison, WI 53706, USA; Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI 54449, USA
| | - De-Ann M Pillers
- Division of Neonatology & Newborn Nursery, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI 53706, USA; McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI 53706, USA; J.F. Crow Institute for the Study of Evolution, University of Wisconsin-Madison, Madison, WI 53706, USA.
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29
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Deng C, Ji C, Qin W, Cao X, Zhong J, Li Y, Srinivas S, Feng Y, Deng X. Deoxynivalenol inhibits proliferation and induces apoptosis in human umbilical vein endothelial cells. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 43:232-241. [PMID: 27037652 DOI: 10.1016/j.etap.2016.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 01/28/2016] [Accepted: 02/02/2016] [Indexed: 06/05/2023]
Abstract
Deoxynivalenol (DON) is a stable mycotoxins found in cereals infected by certain fungal species and causes adverse health effects in animals and human such as vomiting, diarrhea and reproductive toxicity. In this study, we investigated the toxic and apoptotic effects of DON in human umbilical vein endothelial cells (HUVECs), a good model for studying inflammation. The results show that DON significantly inhibited the viability of HUVECs. DON could also inhibit the proliferation of HUVECs through G2/M phase arrest in cell cycle progression. Moreover, oxidative stress induced by DON was indicated by observations of increased levels of reactive oxygen species (ROS). In addition, DON also causes mitochondrial damage by decreasing the mitochondrial membrane potential and inducing apoptosis by up-regulation of apoptosis-related genes like caspase-3, caspase-9, and Bax genes, and down-regulation of Bcl-2 gene. These results together suggest that DON could induce cell cycle arrest, oxidative stress, and apoptosis in HUVECs.
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Affiliation(s)
- Chao Deng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Changyun Ji
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Weisen Qin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xifeng Cao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Jialian Zhong
- Center for Infection & Immunity, School of Basic Medical Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Yugu Li
- Center for Infection & Immunity, School of Basic Medical Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Swaminath Srinivas
- Department of Biochemistry, University of Illinois, Urbana, IL 61801, USA
| | - Youjun Feng
- Center for Infection & Immunity, School of Basic Medical Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China.
| | - Xianbo Deng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
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30
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Zhang H, Wang L, Zhang L. Cyclosporine nanomicelle eye drop: a novel medication for corneal graft transplantation treatment. Biol Pharm Bull 2016; 38:893-900. [PMID: 26027830 DOI: 10.1248/bpb.b15-00111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Corneal transplantation has been used to treat severe eye disease for decades, but the therapeutic effect of the operation is highly compromised by immunological allograft rejection. To improve the success rate of corneal transplantation, we studied the protective effects of cyclosporine nanomicelle eye drops (CNED) on immune rejection after high-risk corneal transplantation and its underlying mechanisms. The therapeutic effects against immune rejection of both conventional cyclosporine eye drop (CCED) and CNED in different concentrations were assessed and compared using animal models of corneal transplantation. In addition, the expression of nuclear factor-κ-gene binding (NF-κB) as well as its target intracellular adhesion molecule 1 (ICAM-1) in the corneal samples obtained from recipients treated with either CCED or CNED was also screened. The results showed that the CNED displayed significantly better effects at suppressing the immune response induced by corneal transplantation compared to CCED. CNED also significantly down-regulated the NF-κB and ICAM-1 expressions, indicating NF-κB might play an important role in the initiation of an immune response against the allograft. Our study demonstrates CNED may suppress the NF-κB pathway to attenuate the immune response, which highlights the possible therapeutic applications of cyclosporine nanomicelle eye drops in corneal transplantation.
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Affiliation(s)
- Hongkui Zhang
- Department of Ophthalmology, Teaching Hospital, Ningbo University School of Medicine
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31
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Zhang M, Li N, Qu XB, Luo S, Drummen GPC. Total velvet-antler polypeptide extract from Cervus nippon Temminck induces cell proliferation and activation of the PI3K–Akt signalling pathway in human peripheral blood lymphocytes. ANIMAL PRODUCTION SCIENCE 2016. [DOI: 10.1071/an15103] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Velvet antler (VA) has been used for centuries as a traditional medicine to treat a wide range of health problems. VA was first recorded in the Chinese medical classics Shen Nong Ben Cao Jing 2000 years ago. VA has been extensively used to strengthen bones and muscles, promote blood flow and increase immune function. In the present study, we used VA (Cervus nippon Temminck) protein extract (VAPE) to induce cell proliferation and differentiation in human peripheral blood lymphocyte cell line 1301 cells. The results showed that 100 µg/mL of VAPE could significantly induce 1301-cell proliferation (151.3%), increase the population of S-phase cells and increase the expression of CDK4. In addition, VAPE could effectively increase the expression levels of PI3K and Akt and activate PI3K–Akt signal pathway. These findings have provided novel insights into the further understanding of the molecular and signalling pathway mechanisms of VAPE in promoting proliferation of human peripheral blood lymphocyte cells.
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Intestinal toxicity of the masked mycotoxin deoxynivalenol-3-β-D-glucoside. Arch Toxicol 2015; 90:2037-46. [PMID: 26404761 DOI: 10.1007/s00204-015-1592-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/31/2015] [Indexed: 01/21/2023]
Abstract
Natural food contaminants such as mycotoxins are an important problem for human health. Deoxynivalenol (DON) is one of the most common mycotoxins detected in cereals and grains. Its toxicological effects mainly concern the immune system and the gastrointestinal tract. This toxin is a potent ribotoxic stressor leading to MAP kinase activation and inflammatory response. DON frequently co-occurs with its glucosylated form, the masked mycotoxin deoxynivalenol-3-β-D-glucoside (D3G). The toxicity of this later compound remains unknown in mammals. This study aimed to assess the ability of D3G to elicit a ribotoxic stress and to induce intestinal toxicity. The toxicity of D3G and DON (0-10 µM) was studied in vitro, on the human intestinal Caco-2 cell line, and ex vivo, on porcine jejunal explants. First, an in silico analysis revealed that D3G, contrary to DON, was unable to bind to the A-site of the ribosome peptidyl transferase center, the main targets for DON toxicity. Accordingly, D3G did not activate JNK and P38 MAPKs in treated Caco-2 cells and did not alter viability and barrier function on cells, as measured by the trans-epithelial electrical resistance. Treatment of intestinal explants for 4 h with 10 µM DON induced morphological lesions and up-regulated the expression of pro-inflammatory cytokines as measured by qPCR and pan-genomic microarray analysis. By contrast, expression profile of D3G-treated explants was similar to that of controls, and these explants did not show histomorphology alteration. In conclusion, our data demonstrated that glucosylation of DON suppresses its ability to bind to the ribosome and decreases its intestinal toxicity.
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Shao J, Stout I, Hendriksen PJM, van Loveren H, Peijnenburg AACM, Volger OL. Protein phosphorylation profiling identifies potential mechanisms for direct immunotoxicity. J Immunotoxicol 2015; 13:97-107. [PMID: 25715851 DOI: 10.3109/1547691x.2015.1016635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Signaling networks are essential elements that are involved in diverse cellular processes. One group of fundamental components in various signaling pathways concerns protein tyrosine kinases (PTK). Various toxicants have been demonstrated to exert their toxicity via modulation of tyrosine kinase activity. The present study aimed to identify common cellular signaling pathways that are involved in chemical-induced direct immunotoxicity. To this end, an antibody array-based profiling approach was applied to assess effects of five immunotoxicants, two immunosuppressive drugs and two non-immunotoxic control chemicals on the phosphorylation of 28 receptor tyrosine kinases and 11 crucial signaling nodes in Jurkat T-cells. The phosphorylation of ribosomal protein S6 (RPS6) and of kinases Akt, Src and p44/42 were found to be commonly regulated by immunotoxicants and/or immunosuppressive drugs (at least three compounds), with the largest effect observed upon RPS6. Flow cytometry and Western blotting were used to further examine the effect of the model immunotoxicant TBTO on the components of the mTOR-p70S6K-RPS6 pathway. These analyses revealed that both TBTO and the mTOR inhibitor rapamycin inactivate RPS6, but via different mechanisms. Finally, a comparison of the protein phosphorylation data to previously obtained transcriptome data of TBTO-treated Jurkat cells resulted in a good correlation at the pathway level and indicated that TBTO affects ribosome biogenesis and leukocyte migration. The effect of TBTO on the latter process was confirmed using a CXCL12 chemotaxis assay.
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Affiliation(s)
- Jia Shao
- a RIKILT-Institute of Food Safety, Wageningen University and Research Centre , Wageningen , the Netherlands .,b Department of Toxicogenomics , Maastricht University , the Netherlands .,c Netherlands Toxicogenomics Centre , the Netherlands , and
| | - Inge Stout
- a RIKILT-Institute of Food Safety, Wageningen University and Research Centre , Wageningen , the Netherlands
| | - Peter J M Hendriksen
- a RIKILT-Institute of Food Safety, Wageningen University and Research Centre , Wageningen , the Netherlands .,c Netherlands Toxicogenomics Centre , the Netherlands , and
| | - Henk van Loveren
- b Department of Toxicogenomics , Maastricht University , the Netherlands .,c Netherlands Toxicogenomics Centre , the Netherlands , and.,d National Institute for Public Health and the Environment (RIVM) , Bilthoven , the Netherlands
| | - Ad A C M Peijnenburg
- a RIKILT-Institute of Food Safety, Wageningen University and Research Centre , Wageningen , the Netherlands .,c Netherlands Toxicogenomics Centre , the Netherlands , and
| | - Oscar L Volger
- a RIKILT-Institute of Food Safety, Wageningen University and Research Centre , Wageningen , the Netherlands .,c Netherlands Toxicogenomics Centre , the Netherlands , and
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Capasso L, Longhin E, Caloni F, Camatini M, Gualtieri M. Synergistic inflammatory effect of PM10 with mycotoxin deoxynivalenol on human lung epithelial cells. Toxicon 2015; 104:65-72. [PMID: 26263889 DOI: 10.1016/j.toxicon.2015.08.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 06/10/2015] [Accepted: 08/06/2015] [Indexed: 01/08/2023]
Abstract
The presence of deoxynivalenol (DON), a mycotoxin produced by Fusarium species, has been reported worldwide in food and feedstuffs. Even though oral intake is the main route of exposure, DON inhalation is also of concern in workers and exposed population. Particulate matter (PM) is one of the most important causes of air quality detriment and it induces several adverse health effects. Therefore it is of primary importance to understand possible combined effects of DON and PM. The alveolar type II, A549, and the bronchial epithelial, BEAS-2B, cell lines were exposed for 24 h to different concentrations of DON (10-1000 ng/ml), PM10 (5 μg/cm(2), sampled in summer or winter season), and a combination of these pollutants. Cell death, interleukins release and cell cycle alteration were analysed; protein array technique was also applied to evaluate proteins activation related to MAP-kinases cascade. Our results demonstrate that low doses of PM and DON used alone have scarce toxic effects, while induce cytotoxicity and inflammation when used in combination. This observation outlines the importance of investigation on the combined effects of air pollutants for their possible outcomes on human health.
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Affiliation(s)
- Laura Capasso
- Polaris Research Centre, Dept. of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza, 1, 20126, Milan, Italy
| | - Eleonora Longhin
- Polaris Research Centre, Dept. of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza, 1, 20126, Milan, Italy
| | - Francesca Caloni
- Department of Health, Animal Science and Food Safety (VESPA), Università degli Studi di Milano, Via Celoria, 10 20133 Milan, Italy
| | - Marina Camatini
- Polaris Research Centre, Dept. of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza, 1, 20126, Milan, Italy
| | - Maurizio Gualtieri
- ENEA-UTTS/SSPT-MET-INAT, Strada per Crescentino 41, 13040, Saluggia, VC, Italy.
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35
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Schmeits PCJ, Shao J, van der Krieken DA, Volger OL, van Loveren H, Peijnenburg AACM, Hendriksen PJM. Successful validation of genomic biomarkers for human immunotoxicity in Jurkat T cells in vitro. J Appl Toxicol 2014; 35:831-41. [PMID: 25424538 DOI: 10.1002/jat.3079] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 09/08/2014] [Accepted: 09/10/2014] [Indexed: 11/09/2022]
Abstract
Previously, we identified 25 classifier genes that were able to assess immunotoxicity using human Jurkat T cells. The present study aimed to validate these classifiers. For that purpose, Jurkat cells were exposed for 6 h to subcytotoxic doses of nine immunotoxicants, five non-immunotoxicants and four compounds for which human immunotoxicity has not yet been fully established. RNA was isolated and subjected to Fluidigm quantitative real time (qRT)-PCR analysis. The sensitivity, specificity and accuracy of the screening assay as based on the nine immunotoxicants and five non-immunotoxicants used in this study were 100%, 80% and 93%, respectively, which is better than the performance in our previous study. Only one compound was classified as false positive (benzo-e-pyrene). Of the four potential (non-)immunotoxicants, chlorantraniliprole and Hidrasec were classified immunotoxic and Sunset yellow and imidacloprid as non-immunotoxic. ToxPi analysis of the PCR data provided insight in the molecular pathways that were affected by the compounds. The immunotoxicants 2,3-dichloro-propanol and cypermethrin, although structurally different, affected protein metabolism and cholesterol biosynthesis and transport. In addition, four compounds, i.e. chlorpyrifos, aldicarb, benzo-e-pyrene and anti-CD3, affected genes in cholesterol metabolism and transport, protein metabolism and transcription regulation. qRT-PCR on eight additional genes coding for similar processes as defined in ToxPi analyzes, supported these results. In conclusion, the 25 immunotoxic classifiers performed very well in a screening with new non-immunotoxic and immunotoxic compounds. Therefore, the Jurkat screening assay has great promise to be applied within a tiered approach for animal free testing of human immunotoxicity.
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Affiliation(s)
- Peter C J Schmeits
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands.,Department of Toxicogenomics, Maastricht University, the Netherlands
| | - Jia Shao
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands.,Department of Toxicogenomics, Maastricht University, the Netherlands
| | - Danique A van der Krieken
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Oscar L Volger
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Henk van Loveren
- Department of Toxicogenomics, Maastricht University, the Netherlands.,Centre for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Ad A C M Peijnenburg
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Peter J M Hendriksen
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands
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36
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Wu QH, Wu GX, Wang Y, Wan D, Zhang XJ, Yuan ZH. DEOXYNIVALENOL: METABOLISM AND REGIONAL DIFFERENCES IN HUMAN EXPOSURE. ACTA ACUST UNITED AC 2014. [DOI: 10.31482/mmsl.2014.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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37
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Katika MR, Hendriksen PJM, van Loveren H, A. C. M. Peijnenburg A. Characterization of the modes of action of deoxynivalenol (DON) in the human Jurkat T-cell line. J Immunotoxicol 2014; 12:206-16. [DOI: 10.3109/1547691x.2014.925995] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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38
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Schmeits PCJ, van Kol S, van Loveren H, Peijnenburg AACM, Hendriksen PJM. The effects of tributyltin oxide and deoxynivalenol on the transcriptome of the mouse thymoma cell line EL-4. Toxicol Res (Camb) 2014. [DOI: 10.1039/c3tx50100k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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39
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Li D, Ye Y, Lin S, Deng L, Fan X, Zhang Y, Deng X, Li Y, Yan H, Ma Y. Evaluation of deoxynivalenol-induced toxic effects on DF-1 cells in vitro: cell-cycle arrest, oxidative stress, and apoptosis. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:141-149. [PMID: 24322622 DOI: 10.1016/j.etap.2013.11.015] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 11/16/2013] [Accepted: 11/18/2013] [Indexed: 06/03/2023]
Abstract
Deoxynivalenol (DON) is one of the most common mycotoxin contaminants of raw and processed cereal food. Lymphoid cells and fibroblasts are specified to be the most DON-sensitive cell types. In this study, we investigated the toxic effects of DON in chicken embryo fibroblast DF-1 cells. The results showed that DON significantly inhibited DF-1 cell viability in both a time- and concentration-dependent manner. DON could also inhibit the proliferation of DF-1 cells through G2/M phase arrest in the cell cycle progression. Moreover, oxidative stress induced by DON was indicated by increased levels of reactive oxygen species (ROS), malondialdehyde (MDA), and decreased levels of glutathione (GSH) and superoxide dismutase (SOD). In addition, DON could also cause mitochondrial damage by decreasing the mitochondrial membrane potential and induce apoptosis accompanied with the up-regulation of apoptosis-related genes including Caspase-3, Caspase-8, Caspase-9, and AIFM1. These results suggested that DON could cause cell cycle arrest, oxidative stress, and apoptosis in DF-1 cells.
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Affiliation(s)
- Daotong Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yaqiong Ye
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Shaoqing Lin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Li Deng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xiaolong Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yuan Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xianbo Deng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yugu Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Haikuo Yan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Yongjiang Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
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40
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Transcriptome-based functional classifiers for direct immunotoxicity. Arch Toxicol 2013; 88:673-89. [DOI: 10.1007/s00204-013-1179-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 12/03/2013] [Indexed: 01/28/2023]
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Schmeits PCJ, Katika MR, Peijnenburg AACM, van Loveren H, Hendriksen PJM. DON shares a similar mode of action as the ribotoxic stress inducer anisomycin while TBTO shares ER stress patterns with the ER stress inducer thapsigargin based on comparative gene expression profiling in Jurkat T cells. Toxicol Lett 2013; 224:395-406. [PMID: 24247028 DOI: 10.1016/j.toxlet.2013.11.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 11/06/2013] [Accepted: 11/06/2013] [Indexed: 11/17/2022]
Abstract
Previously, we studied the effects of deoxynivalenol (DON) and tributyltin oxide (TBTO) on whole genome mRNA expression profiles of human T lymphocyte Jurkat cells. These studies indicated that DON induces ribotoxic stress and both DON and TBTO induced ER stress which resulted into T-cell activation and apoptosis. The first goal of the present study was to provide final proof for these mode of actions by comparing the effects of 6 h exposure to DON and TBTO on mRNA expression to those of positive controls of ribotoxic stress (anisomycin), ER stress (thapsigargin) and T cell activation (ionomycin). Genes affected by anisomycin and the majority of genes affected by thapsigargin were affected in the same direction by DON and TBTO, respectively, confirming the expected modes of action. Pathway analysis further sustained that DON induces ribotoxic stress and both DON and TBTO induce unfolded protein response (UPR), ER stress, T cell activation and apoptosis. The second goal was to assess whether DON and/or TBTO affect other pathways above those detected before. TBTO induced groups of genes that are involved in DNA packaging and heat shock response that were not affected by thapsigargin. DON did not affect other genes than anisomycin indicating the effect of DON to be restricted to ribotoxic stress. This study also demonstrates that comparative gene expression analysis is a very promising tool for the identification of modes of action of immunotoxic compounds.
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Affiliation(s)
- Peter C J Schmeits
- RIKILT-Institute of Food Safety, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, The Netherlands; Department of Toxicogenomics, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Madhumohan R Katika
- RIKILT-Institute of Food Safety, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, The Netherlands; Department of Toxicogenomics, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Ad A C M Peijnenburg
- RIKILT-Institute of Food Safety, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, The Netherlands.
| | - Henk van Loveren
- Department of Toxicogenomics, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands; National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, The Netherlands.
| | - Peter J M Hendriksen
- RIKILT-Institute of Food Safety, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, The Netherlands.
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Li D, Ye Y, Deng L, Ma H, Fan X, Zhang Y, Yan H, Deng X, Li Y, Ma Y. Gene expression profiling analysis of deoxynivalenol-induced inhibition of mouse thymic epithelial cell proliferation. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 36:557-566. [PMID: 23827195 DOI: 10.1016/j.etap.2013.06.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 06/02/2013] [Accepted: 06/05/2013] [Indexed: 06/02/2023]
Abstract
Deoxynivalenol (DON) is a mycotoxin produced as a secondary metabolite by fungal species. It has been shown that DON has serious toxic effects on many kinds of immune cells. However, the toxic effects on thymic epithelial cells were poorly understood. The purpose of this study is to investigate the gene expression differences for the DON-induced inhibition on the proliferation of mouse thymic epithelial cell line 1 (MTEC1). After the experiments of cell viability, morphological investigation and cell cycle analysis, microarray analysis was carried out. The differentially expressed genes belong to a variety of functional categories, including genes involved in metabolic process, cell cycle, oxidation-reduction process and apoptosis. Our results provide molecular insights into the gene expression differences of DON-induced toxic effects and suggest that p53 signaling pathway may play an important role in the inhibition of MTEC1 cell proliferation.
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Affiliation(s)
- Daotong Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yaqiong Ye
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Li Deng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Haoran Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xiaolong Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yuan Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Haikuo Yan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xianbo Deng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yugu Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yongjiang Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
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Shao J, Katika MR, Schmeits PCJ, Hendriksen PJM, van Loveren H, Peijnenburg AACM, Volger OL. Toxicogenomics-based identification of mechanisms for direct immunotoxicity. Toxicol Sci 2013; 135:328-46. [PMID: 23824090 DOI: 10.1093/toxsci/kft151] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Compounds with direct immunotoxic properties, including metals, mycotoxins, agricultural pesticides, and industrial chemicals, form potential human health risks due to exposure through food, drinking water, and the environment. Insights into the mechanisms of action are currently lacking for the majority of these direct immunotoxicants. Therefore, the present work aimed to gain insights into the molecular mechanisms underlying direct immunotoxicity. To this end, we assessed in vitro the effects of 31 test compounds on the transcriptome of the human Jurkat T-cell line. These compounds included direct immunotoxicants, immunosuppressive drugs with different mode of actions, and nonimmunotoxic control chemicals. Pathway analysis of the microarray data allowed us to identify canonical pathways and Gene Ontology processes that were transcriptionally regulated in common by immunotoxicants (1) with structural similarities, such as tributyltin chloride and tributyltin oxide that activated the retinoic acid/X receptor signaling pathway and (2) without structural similarities, such as As2O3, dibutyltin chloride, diazinon, MeHg, ochratoxin A (OTA), S9-treated OTA, S9-treated cyclophosphamide, and S9-treated benzo[a]pyrene, which activated unfolded protein response, and FTY720, lindane, and propanil, which activated the cholesterol biosynthesis pathway. In addition, processes uniquely affected by individual immunotoxicants were identified, such as the induction of Notch receptor signaling and the downregulation of acute-phase response genes by OTA. These findings were validated by quantitative real-time PCR analysis of genes involved in these processes. Our study indicated that diverse modes of action are involved in direct immunotoxicity and that a set of pathways or genes, rather than one single gene, can be used to screen compounds for direct immunotoxicity.
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Affiliation(s)
- Jia Shao
- * RIKILT-Institute of Food Safety, Wageningen University and Research Centre, 6700 AE Wageningen, The Netherlands
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Pan X, Whitten DA, Wu M, Chan C, Wilkerson CG, Pestka JJ. Early phosphoproteomic changes in the mouse spleen during deoxynivalenol-induced ribotoxic stress. Toxicol Sci 2013; 135:129-43. [PMID: 23811945 DOI: 10.1093/toxsci/kft145] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The trichothecene mycotoxin deoxynivalenol (DON) targets the innate immune system and is of public health significance because of its frequent presence in human and animal food. DON-induced proinflammatory gene expression and apoptosis in the lymphoid tissue have been associated with a ribotoxic stress response (RSR) that involves rapid phosphorylation of mitogen-activated protein kinases (MAPKs). To better understand the relationship between protein phosphorylation and DON's immunotoxic effects, stable isotope dimethyl labeling-based proteomics in conjunction with titanium dioxide chromatography was employed to quantitatively profile the immediate (≤ 30min) phosphoproteome changes in the spleens of mice orally exposed to 5mg/kg body weight DON. A total of 90 phosphoproteins indicative of novel phosphorylation events were significantly modulated by DON. In addition to critical branches and scaffolds of MAPK signaling being affected, DON exposure also altered phosphorylation of proteins that mediate phosphatidylinositol 3-kinase/AKT pathways. Gene ontology analysis revealed that DON exposure affected biological processes such as cytoskeleton organization, regulation of apoptosis, and lymphocyte activation and development, which likely contribute to immune dysregulation associated with DON-induced RSR. Consistent with these findings, DON impacted phosphorylation of proteins within diverse immune cell populations, including monocytes, macrophages, T cells, B cells, dendritic cells, and mast cells. Fuzzy c-means clustering analysis further indicated that DON evoked several distinctive temporal profiles of regulated phosphopeptides. Overall, the findings from this investigation can serve as a template for future focused exploration and modeling of cellular responses associated with the immunotoxicity evoked by DON and other ribotoxins.
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Affiliation(s)
- Xiao Pan
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA
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Pan X, Whitten DA, Wu M, Chan C, Wilkerson CG, Pestka JJ. Global protein phosphorylation dynamics during deoxynivalenol-induced ribotoxic stress response in the macrophage. Toxicol Appl Pharmacol 2013; 268:201-11. [PMID: 23352502 DOI: 10.1016/j.taap.2013.01.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 01/12/2013] [Accepted: 01/14/2013] [Indexed: 11/27/2022]
Abstract
Deoxynivalenol (DON), a trichothecene mycotoxin produced by Fusarium that commonly contaminates food, is capable of activating mononuclear phagocytes of the innate immune system via a process termed the ribotoxic stress response (RSR). To encapture global signaling events mediating RSR, we quantified the early temporal (≤30min) phosphoproteome changes that occurred in RAW 264.7 murine macrophage during exposure to a toxicologically relevant concentration of DON (250ng/mL). Large-scale phosphoproteomic analysis employing stable isotope labeling of amino acids in cell culture (SILAC) in conjunction with titanium dioxide chromatography revealed that DON significantly upregulated or downregulated phosphorylation of 188 proteins at both known and yet-to-be functionally characterized phosphosites. DON-induced RSR is extremely complex and goes far beyond its prior known capacity to inhibit translation and activate MAPKs. Transcriptional regulation was the main target during early DON-induced RSR, covering over 20% of the altered phosphoproteins as indicated by Gene Ontology annotation and including transcription factors/cofactors and epigenetic modulators. Other biological processes impacted included cell cycle, RNA processing, translation, ribosome biogenesis, monocyte differentiation and cytoskeleton organization. Some of these processes could be mediated by signaling networks involving MAPK-, NFκB-, AKT- and AMPK-linked pathways. Fuzzy c-means clustering revealed that DON-regulated phosphosites could be discretely classified with regard to the kinetics of phosphorylation/dephosphorylation. The cellular response networks identified provide a template for further exploration of the mechanisms of trichothecenemycotoxins and other ribotoxins, and ultimately, could contribute to improved mechanism-based human health risk assessment.
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Affiliation(s)
- Xiao Pan
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA
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Schmeits PCJ, Volger OL, Zandvliet ET, van Loveren H, Peijnenburg AACM, Hendriksen PJM. Assessment of the usefulness of the murine cytotoxic T cell line CTLL-2 for immunotoxicity screening by transcriptomics. Toxicol Lett 2012; 217:1-13. [PMID: 23253260 DOI: 10.1016/j.toxlet.2012.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/05/2012] [Accepted: 12/06/2012] [Indexed: 10/27/2022]
Abstract
A toxicogenomics approach was applied to assess the usefulness of the mouse cytotoxic T cell line CTLL-2 for in vitro immunotoxicity testing. CTLL-2 cells were exposed for 6 h to two model immunotoxic compounds: (1) the mycotoxin deoxynivalenol (DON, 1 and 2 μM), a ribotoxic stress inducer, and (2) the organotin compound tributyltin oxide (TBTO, 100 and 200 nM), an endoplasmic reticulum (ER) stress inducer. Effects on whole-genome mRNA expression were assessed by microarray analysis. The biological interpretation of the microarray data indicated that TBTO (200 nM) induced genes involved in T cell activation, ER stress, NFκB activation and apoptosis, which agreed very well with results obtained before on TBTO exposed Jurkat cells and mouse primary thymocytes. Remarkably, DON (2 μM) downregulated genes involved in T cell activation, ER stress and apoptosis, which is opposite to results obtained before for DON-exposed Jurkat cells and mouse primary thymocytes. Furthermore, the results for DON in CTLL-2 cells are also opposite to the results obtained for TBTO in CTLL-2 cells. In agreement with the lack of induction of ER stress and apoptosis, viability assays showed that CTLL-2 cells are much more resistant to the toxicity of DON than Jurkat cells and primary thymocytes. We propose that CTLL-2 cells lack the signal transduction that induces ER stress and apoptosis in response to ribotoxic stress. Based on the results for TBTO and DON, the CTLL-2 cell line does not yield an added value for immunotoxicity compared to the human Jurkat T cell line.
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Affiliation(s)
- Peter C J Schmeits
- RIKILT-Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands.
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