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Jumes J, Jaques H, Dalla Vecchia M, Ferreira M, Orrutéa J, Machado M, Mezoni M, da Silva R, Almeida R, Rech D, Kawassaki A, Panis C. Occupational exposure to pesticides deregulates systemic cortisol levels in women with breast cancer and correlates with poor prognosis features. Braz J Med Biol Res 2024; 57:e13060. [PMID: 38265341 PMCID: PMC10802260 DOI: 10.1590/1414-431x2023e13060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/15/2023] [Indexed: 01/25/2024] Open
Abstract
Pesticides have been pointed out as hormone disruptors and may significantly affect the prognosis of hormone-dependent diseases such as breast cancer (BC). Here, we investigated the impact of occupational pesticide exposure on systemic cortisol levels in female rural workers diagnosed with BC. Occupational exposure was assessed by interviews with a standardized questionnaire. Plasma samples (112 from pesticide-exposed women and 77 from unexposed women) were collected in the afternoon, outside the physiological cortisol peak, and analyzed by a chemiluminescent paramagnetic immunoassay for the quantitative determination of cortisol levels in serum and plasma. The results from both groups were categorized according to patients' clinicopathological and exposure data. BC pesticide-exposed women presented higher levels of cortisol than the unexposed. Higher cortisol levels were also detected in the exposed group with more aggressive disease (triple-negative BC), with tumors over 2 cm, with lymph node metastases, and with high risk of disease recurrence and death. These findings demonstrated that there is an association between pesticide exposure and BC that affected cortisol levels and correlated to poor disease prognosis.
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Affiliation(s)
- J.J. Jumes
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Programa de Ciências da Saúde Aplicadas, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - H.S. Jaques
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - M.F. Dalla Vecchia
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - M.O. Ferreira
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Programa de Ciências da Saúde Aplicadas, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - J.F.G. Orrutéa
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - M.G. Machado
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - M.F. Mezoni
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Programa de Ciências da Saúde Aplicadas, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - R.G.S. da Silva
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Programa de Ciências da Saúde Aplicadas, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - R.F. Almeida
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - D. Rech
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Programa de Ciências da Saúde Aplicadas, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Hospital de Câncer de Francisco Beltrão, CEONC, Francisco Beltrão, PR, Brasil
| | - A.C.B. Kawassaki
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Programa de Ciências da Saúde Aplicadas, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
| | - C. Panis
- Laboratório de Biologia Tumoral, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
- Programa de Ciências da Saúde Aplicadas, Universidade Estadual do Oeste do Paraná, Francisco Beltrão, PR, Brasil
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Petitjean K, Verres Y, Bristeau S, Ribault C, Aninat C, Olivier C, Leroyer P, Ropert M, Loréal O, Herault O, Amalric L, Baran N, Fromenty B, Corlu A, Loyer P. Low concentrations of ethylene bisdithiocarbamate pesticides maneb and mancozeb impair manganese and zinc homeostasis to induce oxidative stress and caspase-dependent apoptosis in human hepatocytes. CHEMOSPHERE 2024; 346:140535. [PMID: 37923018 DOI: 10.1016/j.chemosphere.2023.140535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 10/02/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023]
Abstract
The worldwide and intensive use of phytosanitary compounds results in environmental and food contamination by chemical residues. Human exposure to multiple pesticide residues is a major health issue. Considering that the liver is not only the main organ for metabolizing pesticides but also a major target of toxicities induced by xenobiotics, we studied the effects of a mixture of 7 pesticides (chlorpyrifos-ethyl, dimethoate, diazinon, iprodione, imazalil, maneb, mancozeb) often detected in food samples. Effects of the mixture was investigated using metabolically competent HepaRG cells and human hepatocytes in primary culture. We report the strong cytotoxicity of the pesticide mixture towards hepatocytes-like HepaRG cells and human hepatocytes upon acute and chronic exposures at low concentrations extrapolated from the Acceptable Daily Intake (ADI) of each compound. Unexpectedly, we demonstrated that the manganese (Mn)-containing dithiocarbamates (DTCs) maneb and mancozeb were solely responsible for the cytotoxicity induced by the mixture. The mechanism of cell death involved the induction of oxidative stress, which led to cell death by intrinsic apoptosis involving caspases 3 and 9. Importantly, this cytotoxic effect was found only in cells metabolizing these pesticides. Herein, we unveil a novel mechanism of toxicity of the Mn-containing DTCs maneb and mancozeb through their metabolization in hepatocytes generating the main metabolite ethylene thiourea (ETU) and the release of Mn leading to intracellular Mn overload and depletion in zinc (Zn). Alteration of the Mn and Zn homeostasis provokes the oxidative stress and the induction of apoptosis, which can be prevented by Zn supplementation. Our data demonstrate the hepatotoxicity of Mn-containing fungicides at very low doses and unveil their adverse effect in disrupting Mn and Zn homeostasis and triggering oxidative stress in human hepatocytes.
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Affiliation(s)
- Kilian Petitjean
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Yann Verres
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Sébastien Bristeau
- BRGM, Direction Eau, Environnement, Procédés et Analyses (DEPA), 3 Avenue Claude-Guillemin - BP 36009, 45060 Orléans Cedex 2, France
| | - Catherine Ribault
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Caroline Aninat
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Christophe Olivier
- Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France; INSERM UMR 1232 CRCINA, 44000 Nantes-Angers, France; Faculty of Pharmaceutical and Biological Sciences, Nantes University, 44000 Nantes, France
| | - Patricia Leroyer
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Martine Ropert
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France; AEM2 Platform, CHU Pontchaillou, 2 Rue Henri le Guilloux, 35033 Rennes, France
| | - Olivier Loréal
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Olivier Herault
- Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France; Department of Biological Hematology, Tours University Hospital, 37000 Tours, France; CNRS ERL 7001 LNOx, EA 7501, Tours University, 37000 Tours, France; CNRS GDR3697 Micronit "Microenvironment of Tumor Niches", Tours, France
| | - Laurence Amalric
- BRGM, Direction Eau, Environnement, Procédés et Analyses (DEPA), 3 Avenue Claude-Guillemin - BP 36009, 45060 Orléans Cedex 2, France
| | - Nicole Baran
- BRGM, Direction Eau, Environnement, Procédés et Analyses (DEPA), 3 Avenue Claude-Guillemin - BP 36009, 45060 Orléans Cedex 2, France
| | - Bernard Fromenty
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France
| | - Anne Corlu
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France; Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France.
| | - Pascal Loyer
- Inserm, INRAE, Univ Rennes, Institut NUMECAN (Nutrition Métabolismes et Cancer) UMR-A 1341, UMR-S 1317, F-35000 Rennes, France; Cancéropole Grand Ouest (CGO), NET "Niches and Epigenetics of Tumors" Network, 44000 Nantes, France.
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Li YC, Liu SY, Li HR, Meng FB, Qiu J, Qian YZ, Xu YY. Use of Transcriptomics to Reveal the Joint Immunotoxicity Mechanism Initiated by Difenoconazole and Chlorothalonil in the Human Jurkat T-Cell Line. Foods 2023; 13:34. [PMID: 38201063 PMCID: PMC10778019 DOI: 10.3390/foods13010034] [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: 11/14/2023] [Revised: 12/16/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
It is very important to evaluate the immunotoxicity and molecular mechanisms of pesticides. In this study, difenoconazole and chlorothalonil were evaluated for immunotoxicity by using the human Jurkat T-cell line, and the EC50 were 24.66 and 1.17 mg/L, respectively. The joint exposure of difenoconazole and chlorothalonil showed a synergistic effect at low concentrations (lower than 10.58 mg/L) but an antagonistic effect at high concentrations (higher than 10.58 mg/L). With joint exposure at a concentration of EC10, the proportion of late apoptotic cells was 2.26- and 2.91-fold higher than that with exposure to difenoconazole or chlorothalonil alone, respectively. A transcriptomics analysis indicated that the DEGs for single exposure are associated with immunodeficiency disease. Single exposure to chlorothalonil was mainly involved in cation transportation, extracellular matrix organization, and leukocyte cell adhesion. Single exposure to difenoconazole was mainly involved in nervous system development, muscle contraction, and immune system processes. However, when the joint exposure dose was EC10, the DEGs were mainly involved in the formation of cell structures, but the DEGs were mainly involved in cellular processes and metabolism when the joint exposure dose was EC25. The results indicated that the immunotoxicological mechanisms underlying joint exposure to difenoconazole and chlorothalonil are different under low and high doses.
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Affiliation(s)
- Yun-Cheng Li
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.-C.L.); (J.Q.); (Y.-Y.X.)
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (S.-Y.L.); (H.-R.L.); (F.-B.M.)
| | - Shu-Yan Liu
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (S.-Y.L.); (H.-R.L.); (F.-B.M.)
| | - Hou-Ru Li
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (S.-Y.L.); (H.-R.L.); (F.-B.M.)
| | - Fan-Bing Meng
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (S.-Y.L.); (H.-R.L.); (F.-B.M.)
| | - Jing Qiu
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.-C.L.); (J.Q.); (Y.-Y.X.)
| | - Yong-Zhong Qian
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.-C.L.); (J.Q.); (Y.-Y.X.)
| | - Yan-Yang Xu
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.-C.L.); (J.Q.); (Y.-Y.X.)
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Sirikul W, Sapbamrer R. Exposure to pesticides and the risk of hypothyroidism: a systematic review and meta-analysis. BMC Public Health 2023; 23:1867. [PMID: 37752464 PMCID: PMC10523800 DOI: 10.1186/s12889-023-16721-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 09/07/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND Knowledge surrounding the association between exposure to pesticides and hypothyroidism is inconsistent and controversial. METHODS The aim of present study was, therefore, to review scientific evidence systematically and conduct a meta-analysis into the contribution of exposure to pesticides to hypothyroidism. PubMed, Scopus, Web of Science, and Google Scholar were searched. The findings are presented as OR, HR, PR, IRR, and 95% confidence interval (95%CI). A fixed-effect model using the inverse-variance method and random-effects inverse-variance model with DerSimonian-Laird method were used for estimating the pooled estimates. Cochran Q and I2 tests were used to confirm the heterogeneity of selected studies. RESULTS Twelve studies were included in the systematic review, and 9 studies in the meta-analysis. Epidemiological evidence suggested that exposure to insecticides including organochlorines, organophosphates, and pyrethroids increased risk of hypothyroidism (adjusted odds ratio (aOR) = 1.23, 95%CI = 1.14, 1.33 for organochlorines, aOR = 1.12, 95%CI = 1.07, 1.17 for organophosphates, aOR = 1.15, 95%CI = 1.03, 1.28 for pyrethroids). Exposure to herbicides also increased risk of hypothyroidism (aOR = 1.06, 95%CI = 1.02, 1.10). However, exposure to fungicides and fumigants was not found to be associated with hypothyroidism. CONCLUSION To increase current knowledge and confirm evidence to date future research needs to center on large-scale longitudinal epidemiological and biological studies, examination of dose-response relationships, the controlling of relevant confounding variables, using standardized and high sensitivity tools, and investigating the effects of environmental exposure.
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Affiliation(s)
- Wachiranun Sirikul
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, 110 Inthavaroros Road, Sri Phum Subdistrict, Muang District, Chiang Mai, 50200, Thailand
| | - Ratana Sapbamrer
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, 110 Inthavaroros Road, Sri Phum Subdistrict, Muang District, Chiang Mai, 50200, Thailand.
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Peluso T, Nittoli V, Reale C, Porreca I, Russo F, Roberto L, Giacco A, Silvestri E, Mallardo M, De Felice M, Ambrosino C. Chronic Exposure to Chlorpyrifos Damages Thyroid Activity and Imbalances Hepatic Thyroid Hormones Signaling and Glucose Metabolism: Dependency of T3-FOXO1 Axis by Hyperglycemia. Int J Mol Sci 2023; 24:ijms24119582. [PMID: 37298533 DOI: 10.3390/ijms24119582] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/08/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Early life exposure to Endocrine Disruptor Chemicals (EDCs), such as the organophosphate pesticide Chlorpyrifos (CPF), affects the thyroid activity and dependent process, including the glucose metabolism. The damage of thyroid hormones (THs) as a mechanism of action of CPF is underestimated because the studies rarely consider that TH levels and signaling are customized peripherally. Here, we investigated the impairment of metabolism/signaling of THs and lipid/glucose metabolism in the livers of 6-month-old mice, developmentally and lifelong exposed to 0.1, 1, and 10 mg/kg/die CPF (F1) and their offspring similarly exposed (F2), analyzing the levels of transcripts of the enzymes involved in the metabolism of T3 (Dio1), lipids (Fasn, Acc1), and glucose (G6pase, Pck1). Both processes were altered only in F2 males, affected by hypothyroidism and by a systemic hyperglycemia linked to the activation of gluconeogenesis in mice exposed to 1 and 10 mg/kg/die CPF. Interestingly, we observed an increase in active FOXO1 protein due to a decrease in AKT phosphorylation, despite insulin signaling activation. Experiments in vitro revealed that chronic exposure to CPF affected glucose metabolism via the direct modulation of FOXO1 activity and T3 levels in hepatic cells. In conclusion, we described different sex and intergenerational effects of CPF exposure on the hepatic homeostasis of THs, their signaling, and, finally, glucose metabolism. The data points to FOXO1-T3-glucose signaling as a target of CPF in liver.
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Affiliation(s)
- Teresa Peluso
- Department of Science and Technology, University of Sannio, Via de Sanctis, 82100 Benevento, Italy
- Biogem Scarl, Institute of Molecular Biology and Genetics Research, Via Camporeale, 83031 Ariano Irpino, Italy
| | - Valeria Nittoli
- Biogem Scarl, Institute of Molecular Biology and Genetics Research, Via Camporeale, 83031 Ariano Irpino, Italy
| | - Carla Reale
- Biogem Scarl, Institute of Molecular Biology and Genetics Research, Via Camporeale, 83031 Ariano Irpino, Italy
| | - Immacolata Porreca
- Biogem Scarl, Institute of Molecular Biology and Genetics Research, Via Camporeale, 83031 Ariano Irpino, Italy
| | - Filomena Russo
- Biogem Scarl, Institute of Molecular Biology and Genetics Research, Via Camporeale, 83031 Ariano Irpino, Italy
| | - Luca Roberto
- Biogem Scarl, Institute of Molecular Biology and Genetics Research, Via Camporeale, 83031 Ariano Irpino, Italy
| | - Antonia Giacco
- Department of Science and Technology, University of Sannio, Via de Sanctis, 82100 Benevento, Italy
| | - Elena Silvestri
- Department of Science and Technology, University of Sannio, Via de Sanctis, 82100 Benevento, Italy
| | - Massimo Mallardo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples "Federico II", Via Pansini 5, 80131 Naples, Italy
| | - Mario De Felice
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples "Federico II", Via Pansini 5, 80131 Naples, Italy
- Institute of Experimental Endocrinology and Oncology (IEOS), CNR, Via Pansini 6, 80131 Naples, Italy
| | - Concetta Ambrosino
- Department of Science and Technology, University of Sannio, Via de Sanctis, 82100 Benevento, Italy
- Biogem Scarl, Institute of Molecular Biology and Genetics Research, Via Camporeale, 83031 Ariano Irpino, Italy
- Institute of Experimental Endocrinology and Oncology (IEOS), CNR, Via Pansini 6, 80131 Naples, Italy
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A Cross-Species Analysis Reveals Dysthyroidism of the Ovaries as a Common Trait of Premature Ovarian Aging. Int J Mol Sci 2023; 24:ijms24033054. [PMID: 36769379 PMCID: PMC9918015 DOI: 10.3390/ijms24033054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/21/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Although the imbalance of circulating levels of Thyroid Hormones (THs) affects female fertility in vertebrates, its involvement in the promotion of Premature Ovarian Aging (POA) is debated. Therefore, altered synthesis of THs in both thyroid and ovary can be a trait of POA. We investigated the relationship between abnormal TH signaling, dysthyroidism, and POA in evolutionary distant vertebrates: from zebrafish to humans. Ovarian T3 signaling/metabolism was evaluated by measuring T3 levels, T3 responsive transcript, and protein levels along with transcripts governing T3 availability (deiodinases) and signaling (TH receptors) in distinct models of POA depending on genetic background and environmental exposures (e.g., diets, pesticides). Expression levels of well-known (Amh, Gdf9, and Inhibins) and novel (miR143/145 and Gas5) biomarkers of POA were assessed. Ovarian dysthyroidism was slightly influenced by genetics since very few differences were found between C57BL/6J and FVB/NJ females. However, diets exacerbated it in a strain-dependent manner. Similar findings were observed in zebrafish and mouse models of POA induced by developmental and long-life exposure to low-dose chlorpyrifos (CPF). Lastly, the T3 decrease in follicular fluids from women affected by diminished ovarian reserve, as well as of the transcripts modulating T3 signaling/availability in the cumulus cells, confirmed ovarian dysthyroidism as a common and evolutionary conserved trait of POA.
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Albano F, Tucci V, Blackshear PJ, Reale C, Roberto L, Russo F, Marotta P, Porreca I, Colella M, Mallardo M, de Felice M, Ambrosino C. ZFP36L2 Role in Thyroid Functionality. Int J Mol Sci 2021; 22:9379. [PMID: 34502288 PMCID: PMC8431063 DOI: 10.3390/ijms22179379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/30/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
Thyroid hormone levels are usually genetically determined. Thyrocytes produce a unique set of enzymes that are dedicated to thyroid hormone synthesis. While thyroid transcriptional regulation is well-characterized, post-transcriptional mechanisms have been less investigated. Here, we describe the involvement of ZFP36L2, a protein that stimulates degradation of target mRNAs, in thyroid development and function, by in vivo and in vitro gene targeting in thyrocytes. Thyroid-specific Zfp36l2-/- females were hypothyroid, with reduced levels of circulating free Thyroxine (cfT4) and Triiodothyronine (cfT3). Their hypothyroidism was due to dyshormonogenesis, already evident one week after weaning, while thyroid development appeared normal. We observed decreases in several thyroid-specific transcripts and proteins, such as Nis and its transcriptional regulators (Pax8 and Nkx2.1), and increased apoptosis in Zfp36l2-/- thyroids. Nis, Pax8, and Nkx2.1 mRNAs were also reduced in Zfp36l2 knock-out thyrocytes in vitro (L2KO), in which we confirmed the increased apoptosis. Finally, in L2KO cells, we showed an altered response to TSH stimulation regarding both thyroid-specific gene expression and cell proliferation and survival. This result was supported by increases in P21/WAF1 and p-P38MAPK levels. Mechanistically, we confirmed Notch1 as a target of ZFP36L2 in the thyroid since its levels were increased in both in vitro and in vivo models. In both models, the levels of Id4 mRNA, a potential inhibitor of Pax8 activity, were increased. Overall, the data indicate that the regulation of mRNA stability by ZFP36L2 is a mechanism that controls the function and survival of thyrocytes.
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Affiliation(s)
- Francesco Albano
- IEOS-CNR, 80131 Naples, Italy;
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Valeria Tucci
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Perry J. Blackshear
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, NC 27709, USA;
- Departments of Medicine and Biochemistry, Duke University Medical Center, Durham, NC 27710, USA
| | - Carla Reale
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Luca Roberto
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Filomena Russo
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Pina Marotta
- Stazione Zoologica Anton Dohrn, 80121 Napoli, Italy;
| | - Immacolata Porreca
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Marco Colella
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
| | - Massimo Mallardo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, 80131 Naples, Italy;
| | - Mario de Felice
- IEOS-CNR, 80131 Naples, Italy;
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, 80131 Naples, Italy;
| | - Concetta Ambrosino
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
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8
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Nittoli V, Colella M, Porciello A, Reale C, Roberto L, Russo F, Russo NA, Porreca I, De Felice M, Mallardo M, Ambrosino C. Multi Species Analyses Reveal Testicular T3 Metabolism and Signalling as a Target of Environmental Pesticides. Cells 2021; 10:2187. [PMID: 34571837 PMCID: PMC8471965 DOI: 10.3390/cells10092187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/20/2021] [Accepted: 08/22/2021] [Indexed: 12/30/2022] Open
Abstract
Thyroid hormones (THs) regulate many biological processes in vertebrates, including reproduction. Testicular somatic and germ cells are equipped with the arrays of enzymes (deiodinases), transporters, and receptors necessary to locally maintain the optimal level of THs and their signalling, needed for their functions and spermatogenesis. Pesticides, as chlorpyrifos (CPF) and ethylene thiourea (ETU), impair the function of thyroid and testis, affecting male fertility. However, their ability to disarrange testicular T3 (t-T3) metabolism and signalling is poorly considered. Here, a multi-species analysis involving zebrafish and mouse suggests the damage of t-T3 metabolism and signalling as a mechanism of gonadic toxicity of low-doses CPF and ETU. Indeed, the developmental exposure to both compounds reduces Dio2 transcript in both models, as well as in ex-vivo cultures of murine seminiferous tubules, and it is linked to alteration of steroidogenesis and germ cell differentiation. A major impact on spermatogonia was confirmed molecularly by the expression of their markers and morphologically evidenced in zebrafish. The results reveal that in the adopted models, exposure to both pesticides alters the t-T3 metabolism and signalling, affecting the reproductive capability. Our data, together with previous reports suggest zebrafish as an evaluable model in assessing the action of compounds impairing locally T3 signalling.
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Affiliation(s)
- Valeria Nittoli
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
| | - Marco Colella
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
- Laboratory of Pre-Clinical and Translational Research, IRCCS, Referral Cancer Center of Basilicata, 85028 Potenza, Italy
| | - Alfonsina Porciello
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
| | - Carla Reale
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
| | - Luca Roberto
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
| | - Filomena Russo
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
| | - Nicola A. Russo
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
| | - Immacalata Porreca
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
| | - Mario De Felice
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, 59100 Naples, Italy;
- IEOS-CNR, 80131 Naples, Italy
| | - Massimo Mallardo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, 59100 Naples, Italy;
| | - Concetta Ambrosino
- Biogem, Istituto di Biologia e Genetica Molecolare, Via Camporeale, 83031 Ariano Irpino (AV), Italy; (V.N.); (M.C.); (A.P.); (C.R.); (L.R.); (F.R.); (N.A.R.); (I.P.)
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
- IEOS-CNR, 80131 Naples, Italy
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9
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Skalny A, Aschner M, Paoliello M, Santamaria A, Nikitina N, Rejniuk V, Jiang Y, Rocha J, Tinkov A. Endocrine-disrupting activity of mancozeb. ARHIV ZA FARMACIJU 2021; 71:491-507. [PMID: 35990020 PMCID: PMC9390121 DOI: 10.5937/arhfarm71-34359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2024] Open
Abstract
The objective of the present study was to review the existing data on the mechanisms involved in the endocrine disrupting activity of mancozeb (MCZ) in its main targets, including thyroid and gonads, as well as other endocrine tissues that may be potentially affected by MCZ. MCZ exposure was shown to interfere with thyroid functioning through impairment of thyroid hormone synthesis due to inhibition of sodium-iodine symporter (NIS) and thyroid peroxidase (TPO) activity, as well as thyroglobulin expression. Direct thyrotoxic effect may also contribute to thyroid pathology upon MCZ exposure. Gonadal effects of MCZ involve inhibition of sex steroid synthesis due to inhibition of P450scc (CYP11A1), as well as 3β-HSD and 17β-HSD. In parallel with altered hormone synthesis, MCZ was shown to down-regulate androgen and estrogen receptor signaling. Taken together, these gonad-specific effects result in development of both male and female reproductive dysfunction. In parallel with clearly estimated targets for MCZ endocrine disturbing activity, namely thyroid and gonads, other endocrine tissues may be also involved. Specifically, the fungicide was shown to affect cortisol synthesis that may be mediated by modulation of CYP11B1 activity. Moreover, MCZ exposure was shown to interfere with PPARγ signaling, being a key regulator of adipogenesis. The existing data also propose that endocrine-disrupting effects of MCZ exposure may be mediated by modulation of hypothalamus-pituitary-target axis. It is proposed that MCZ neurotoxicity may at least partially affect central mechanisms of endocrine system functioning. However, further studies are required to unravel the mechanisms of MCZ endocrine disrupting activity and overall toxicity.
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Affiliation(s)
- Anatoly Skalny
- IM Sechenov First Moscow State Medical University, Moscow 119146, Russia
- Peoples’ Friendship University of Russia (RUDN University), Moscow 117198, Russia
- Institute of Bioelementology, Orenburg State University, Orenburg 460018, Russia
| | - Michael Aschner
- IM Sechenov First Moscow State Medical University, Moscow 119146, Russia
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Monica Paoliello
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Abel Santamaria
- Laboratorio de Aminoácidos Excitadores/Laboratorio de Neurofarmacología Molecular y Nanotecnología, Instituto Nacional de Neurología y Neurocirugía, Mexico City 14269, Mexico
| | - Natalia Nikitina
- IM Sechenov First Moscow State Medical University, Moscow 119146, Russia
| | - Vladimir Rejniuk
- Golikov Research Center of Toxicology, Saint Petersburg 192019, Russia
| | - Yueming Jiang
- Department of Toxicology,School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - João Rocha
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Alexey Tinkov
- Peoples’ Friendship University of Russia (RUDN University), Moscow 117198, Russia
- Institute of Bioelementology, Orenburg State University, Orenburg 460018, Russia
- Yaroslavl State University, Yaroslavl 150000, Russia
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10
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Moroni L, Barbaro F, Caiment F, Coleman O, Costagliola S, Di Conza G, Elviri L, Giselbrecht S, Krause C, Mota C, Nazzari M, Pennington SR, Ringwald A, Sandri M, Thomas S, Waddington J, Toni R. SCREENED: A Multistage Model of Thyroid Gland Function for Screening Endocrine-Disrupting Chemicals in a Biologically Sex-Specific Manner. Int J Mol Sci 2020; 21:E3648. [PMID: 32455722 PMCID: PMC7279272 DOI: 10.3390/ijms21103648] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/04/2020] [Accepted: 05/14/2020] [Indexed: 12/12/2022] Open
Abstract
Endocrine disruptors (EDs) are chemicals that contribute to health problems by interfering with the physiological production and target effects of hormones, with proven impacts on a number of endocrine systems including the thyroid gland. Exposure to EDs has also been associated with impairment of the reproductive system and incidence in occurrence of obesity, type 2 diabetes, and cardiovascular diseases during ageing. SCREENED aims at developing in vitro assays based on rodent and human thyroid cells organized in three different three-dimensional (3D) constructs. Due to different levels of anatomical complexity, each of these constructs has the potential to increasingly mimic the structure and function of the native thyroid gland, ultimately achieving relevant features of its 3D organization including: 1) a 3D organoid based on stem cell-derived thyrocytes, 2) a 3D organoid based on a decellularized thyroid lobe stromal matrix repopulated with stem cell-derived thyrocytes, and 3) a bioprinted organoid based on stem cell-derived thyrocytes able to mimic the spatial and geometrical features of a native thyroid gland. These 3D constructs will be hosted in a modular microbioreactor equipped with innovative sensing technology and enabling precise control of cell culture conditions. New superparamagnetic biocompatible and biomimetic particles will be used to produce "magnetic cells" to support precise spatiotemporal homing of the cells in the 3D decellularized and bioprinted constructs. Finally, these 3D constructs will be used to screen the effect of EDs on the thyroid function in a unique biological sex-specific manner. Their performance will be assessed individually, in comparison with each other, and against in vivo studies. The resulting 3D assays are expected to yield responses to low doses of different EDs, with sensitivity and specificity higher than that of classical 2D in vitro assays and animal models. Supporting the "Adverse Outcome Pathway" concept, proteogenomic analysis and biological computational modelling of the underlying mode of action of the tested EDs will be pursued to gain a mechanistic understanding of the chain of events from exposure to adverse toxic effects on thyroid function. For future uptake, SCREENED will engage discussion with relevant stakeholder groups, including regulatory bodies and industry, to ensure that the assays will fit with purposes of ED safety assessment. In this project review, we will briefly discuss the current state of the art in cellular assays of EDs and how our project aims at further advancing the field of cellular assays for EDs interfering with the thyroid gland.
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Affiliation(s)
- Lorenzo Moroni
- MERLN Institute for Technology-Inspired Regenerative Medicine, Department of Complex Tissue Regeneration, Maastricht University, 6229ET Maastricht, The Netherlands;
| | - Fulvio Barbaro
- Department of Medicine and Surgery—DIMEC, Unit of Biomedical, Biotechnological and Translational Sciences (S.BI.BI.T.), Laboratory of Regenerative Morphology and Bioartificial Structures (Re.Mo.Bio.S. Lab.), University of Parma, 43121 Parma, Italy; (F.B.); (G.D.C.); (R.T.)
| | - Florian Caiment
- Toxicogenomics, Maastricht University, 6229ET Maastricht, The Netherlands; (F.C.); (M.N.)
| | - Orla Coleman
- Atturos Ltd., c/o Conway Research Institute, University College Dublin, Dublin 4, Ireland; (O.C.); (S.R.P.)
| | - Sabine Costagliola
- Institute of Interdisciplinary Research in Molecular Human Biology (IRIBHM), Université Libre de Bruxelles, 1050 Brussels, Belgium;
| | - Giusy Di Conza
- Department of Medicine and Surgery—DIMEC, Unit of Biomedical, Biotechnological and Translational Sciences (S.BI.BI.T.), Laboratory of Regenerative Morphology and Bioartificial Structures (Re.Mo.Bio.S. Lab.), University of Parma, 43121 Parma, Italy; (F.B.); (G.D.C.); (R.T.)
| | - Lisa Elviri
- Food and Drug Department, University of Parma, 43121 Parma, Italy;
| | - Stefan Giselbrecht
- MERLN Institute for Technology-Inspired Regenerative Medicine, Department of Instruct Biomaterials Engineering, Maastricht University, 6229ET Maastricht, The Netherlands;
| | | | - Carlos Mota
- MERLN Institute for Technology-Inspired Regenerative Medicine, Department of Complex Tissue Regeneration, Maastricht University, 6229ET Maastricht, The Netherlands;
| | - Marta Nazzari
- Toxicogenomics, Maastricht University, 6229ET Maastricht, The Netherlands; (F.C.); (M.N.)
| | - Stephen R. Pennington
- Atturos Ltd., c/o Conway Research Institute, University College Dublin, Dublin 4, Ireland; (O.C.); (S.R.P.)
- UCD Conway Institute, School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland;
| | | | - Monica Sandri
- Institute of Science and Technology for Ceramics, National Research Council of Italy (ISTEC-CNR), 48018 Faenza, Italy;
| | - Simon Thomas
- Cyprotex Discovery Ltd., No. 24 Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, UK;
| | - James Waddington
- UCD Conway Institute, School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland;
| | - Roberto Toni
- Department of Medicine and Surgery—DIMEC, Unit of Biomedical, Biotechnological and Translational Sciences (S.BI.BI.T.), Laboratory of Regenerative Morphology and Bioartificial Structures (Re.Mo.Bio.S. Lab.), University of Parma, 43121 Parma, Italy; (F.B.); (G.D.C.); (R.T.)
- Division of Endocrinology, Diabetes, and Metabolism, Tufts Medical Center - Tufts University School of Medicine, Boston, MA 02111, USA
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11
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Méndez-Lucio O, Baillif B, Clevert DA, Rouquié D, Wichard J. De novo generation of hit-like molecules from gene expression signatures using artificial intelligence. Nat Commun 2020; 11:10. [PMID: 31900408 PMCID: PMC6941972 DOI: 10.1038/s41467-019-13807-w] [Citation(s) in RCA: 177] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 11/27/2019] [Indexed: 01/20/2023] Open
Abstract
Finding new molecules with a desired biological activity is an extremely difficult task. In this context, artificial intelligence and generative models have been used for molecular de novo design and compound optimization. Herein, we report a generative model that bridges systems biology and molecular design, conditioning a generative adversarial network with transcriptomic data. By doing so, we can automatically design molecules that have a high probability to induce a desired transcriptomic profile. As long as the gene expression signature of the desired state is provided, this model is able to design active-like molecules for desired targets without any previous target annotation of the training compounds. Molecules designed by this model are more similar to active compounds than the ones identified by similarity of gene expression signatures. Overall, this method represents an alternative approach to bridge chemistry and biology in the long and difficult road of drug discovery.
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Affiliation(s)
- Oscar Méndez-Lucio
- Bayer SAS, Bayer Crop Science, 355 rue Dostoïevski, CS 90153, 06906, Valbonne, Sophia Antipolis Cedex, France.
- Bloomoon, 13 Avenue Albert Einstein, 69100, Villeurbanne, France.
| | - Benoit Baillif
- Bayer SAS, Bayer Crop Science, 355 rue Dostoïevski, CS 90153, 06906, Valbonne, Sophia Antipolis Cedex, France
| | - Djork-Arné Clevert
- Department of Machine Learning Research, Bayer AG, 13353, Berlin, Germany
| | - David Rouquié
- Bayer SAS, Bayer Crop Science, 355 rue Dostoïevski, CS 90153, 06906, Valbonne, Sophia Antipolis Cedex, France.
| | - Joerg Wichard
- Department of Genetic Toxicology, Bayer AG, 13353, Berlin, Germany.
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12
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Leemans M, Couderq S, Demeneix B, Fini JB. Pesticides With Potential Thyroid Hormone-Disrupting Effects: A Review of Recent Data. Front Endocrinol (Lausanne) 2019; 10:743. [PMID: 31920955 PMCID: PMC6915086 DOI: 10.3389/fendo.2019.00743] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/14/2019] [Indexed: 12/26/2022] Open
Abstract
Plant Protection Products, more commonly referred to as pesticides and biocides, are used to control a wide range of yield-reducing pests including insects, fungi, nematodes, and weeds. Concern has been raised that some pesticides may act as endocrine disrupting chemicals (EDCs) with the potential to interfere with the hormone systems of non-target invertebrates and vertebrates, including humans. EDCs act at low doses and particularly vulnerable periods of exposure include pre- and perinatal development. Of critical concern is the number of pesticides with the potential to interfere with the developing nervous system and brain, notably with thyroid hormone signaling. Across vertebrates, thyroid hormone orchestrates metamorphosis, brain development, and metabolism. Pesticide action on thyroid homeostasis can involve interference with TH production and its control, displacement from distributor proteins and liver metabolism. Here we focused on thyroid endpoints for each of the different classes of pesticides reviewing epidemiological and experimental studies carried out both in in vivo and in vitro. We conclude first, that many pesticides were placed on the market with insufficient testing, other than acute or chronic toxicity, and second, that thyroid-specific endpoints for neurodevelopmental effects and mixture assessment are largely absent from regulatory directives.
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Affiliation(s)
- Michelle Leemans
- Muséum National d'Histoire Naturelle, CNRS UMR 7221, Laboratoire Physiologie moléculaire de l'adaptation, Paris, France
| | | | | | - Jean-Baptiste Fini
- Muséum National d'Histoire Naturelle, CNRS UMR 7221, Laboratoire Physiologie moléculaire de l'adaptation, Paris, France
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13
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A Toxicogenomic Approach Reveals a Novel Gene Regulatory Network Active in In Vitro and In Vivo Models of Thyroid Carcinogenesis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16010122. [PMID: 30621213 PMCID: PMC6338918 DOI: 10.3390/ijerph16010122] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 12/21/2018] [Accepted: 12/27/2018] [Indexed: 02/06/2023]
Abstract
Epidemiological and experimental studies emphasize the link between environmental chemicals exposure and thyroid cancer. However, this association is strongly debated and the mechanisms of action of environmental thyroid carcinogens still need to be identified. The analysis of in vitro transcriptomic data developed to investigate the effects of chlorpyrifos on immortalized thyrocytes highlighted the impaired expression of genes involved in endodermal carcinogenesis. This endodermal carcinogenic gene-network (ECGN, including Zfp36l2, Dmbt1, Ddit4), was validated in cellular and mouse models of thyroid carcinogenesis, characterized by the constitutive activation of the mitogen-activated protein kinase (MAPK) pathway and in immortalized thyrocytes exposed to tetrachlorodibenzo-p-dioxin (TCDD) and chlorpyrifos (CPF). The mRNA levels of Zfp36l2, Dmbt1 and Ddit4 were increased in models characterized by MAPK activation or following TCDD exposure, whereas they were inhibited by CPF exposure. Overall, the ECGN transcripts identify a novel gene-regulatory network associated with thyroid carcinogenesis promoted by genetic mutation or by environmental carcinogens. The latter have opposite effects on the modulation of the ECGN transcripts according to their mechanisms of action in promoting carcinogenesis. Therefore, the analyses of ECGN might be helpful in discriminating compounds that promote cellular survival associated or not to proliferation of thyrocytes.
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14
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Smit E, Kleinjans JCS, van den Beucken T. Phosphorylation of eIF2α promotes cell survival in response to benzo[a]pyrene exposure. Toxicol In Vitro 2018; 54:330-337. [PMID: 30385349 DOI: 10.1016/j.tiv.2018.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 10/02/2018] [Accepted: 10/27/2018] [Indexed: 10/28/2022]
Abstract
Cellular adaptation is important to cope with various stresses induced by altered environmental conditions. By controlling mRNA translation rates cells may adapt to stress to promote survival. Phosphorylation of eIF2α at serine 51 is one of the pathways controlling mRNA translation. Here we investigated the role of phosphorylated eIF2α during exposure to the environmental carcinogen benzo(a)pyrene (BaP). For our study we used mouse embryonic fibroblasts with a wild type eIF2α (MEF WT) and mouse embryonic fibroblasts with an eIF2α S51A knock-in mutation that cannot be phosphorylated. Here, we show that eIF2α phosphorylation occurs in MEF WT cells but not in MEF S51A cells. Survival of MEF S51A cells is profoundly reduced compared to MEF WT controls after BaP exposure. No differences in DNA damage or ROS production were observed between MEF WT and S51A cells. Disruption of eIF2α phosphorylation caused increased levels of apoptosis in response to BaP. This work demonstrates that eIF2α phosphorylation is important for reducing apoptosis and promoting cell survival in order to adapt to BaP exposure.
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Affiliation(s)
- Evelyn Smit
- Department of Toxicogenomics, GROW School for Oncology and Developmental Biology, Maastricht University, the Netherlands
| | - Jos C S Kleinjans
- Department of Toxicogenomics, GROW School for Oncology and Developmental Biology, Maastricht University, the Netherlands
| | - Twan van den Beucken
- Department of Toxicogenomics, GROW School for Oncology and Developmental Biology, Maastricht University, the Netherlands.
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15
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Genetic background and window of exposure contribute to thyroid dysfunction promoted by low-dose exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin in mice. Sci Rep 2018; 8:16324. [PMID: 30397221 PMCID: PMC6218492 DOI: 10.1038/s41598-018-34427-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 09/24/2018] [Indexed: 01/02/2023] Open
Abstract
Genetic and environmental factors contribute to thyroid diseases. Although still debated, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is thought to induce thyroid dysfunction in humans and rodents. The data here reported point out the contribution of the exposure window and genetic background in mediating the low-dose TCDD effects on thyroid. Indeed, early (from E0.5 to PND30) and low-dose (0,001 μg/kg/day) TCDD exposure reduced the circulating fT4 and altered the expression of thyroid specific transcripts. The role of genetic components was estimated monitoring the same markers in Pax8+/- and Nkx2-1+/- mice, susceptible to thyroid dysfunction, exposed to 0, 1 μg/kg/day TCDD from E15.5 to PND60. Haploinsufficiency of either Pax8 or Nkx2-1 genes exacerbated the effects of the exposure impairing the thyroid enriched mRNAs in sex dependent manner. Such effect was mediated by mechanisms involving the Nkx2-1/p53/p65/IĸBα pathway in vitro and in vivo. Foetal exposure to TCDD impaired both thyroid function and genes expression while thyroid development and differentiation did not appear significantly affected. In mouse, stronger effects were related to earlier exposure or specific genetic background such as either Pax8 or Nkx2-1 haploinsufficiency, both associated to hypothyroidism in humans. Furthermore, our data underline that long exposure time are needed to model in vitro and in vivo results.
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16
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Pallotta MM, Ronca R, Carotenuto R, Porreca I, Turano M, Ambrosino C, Capriglione T. Specific Effects of Chronic Dietary Exposure to Chlorpyrifos on Brain Gene Expression-A Mouse Study. Int J Mol Sci 2017; 18:ijms18112467. [PMID: 29156651 PMCID: PMC5713433 DOI: 10.3390/ijms18112467] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/04/2017] [Accepted: 11/07/2017] [Indexed: 01/14/2023] Open
Abstract
Chlorpyrifos (CPF) is an organophosphate insecticide used to control pests on a variety of food and feed crops. In mammals, maternal exposure to CPF has been reported to induce cerebral cortex thinning, alteration of long-term brain cognitive function, and Parkinson-like symptoms, but the mechanisms of these processes are not fully understood. In this study, we aimed to gain a deeper understanding of the alterations induced in the brains of mice chronically exposed to CPF by dietary intake. For our purpose, we analysed F1 offspring (sacrificed at 3 and 8 months) of Mus musculus, treated in utero and postnatally with 3 different doses of CPF (0.1-1-10 mg/kg/day). Using RT2 Profiler PCR Arrays, we evaluated the alterations in the expression of 84 genes associated with neurodegenerative diseases. In the brains of exposed mice, we evidenced a clear dose–response relationship for AChE inhibition and alterations of gene expression. Some of the genes that were steadily down-regulated, such as Pink1, Park 2, Sv2b, Gabbr2, Sept5 and Atxn2, were directly related to Parkinson’s onset. Our experimental results shed light on the possibility that long-term CPF exposure may exert membrane signalling alterations which make brain cells more susceptible to develop neurodegenerative diseases.
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Affiliation(s)
- Maria Michela Pallotta
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Napoli, Italy.
| | - Raffaele Ronca
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Napoli, Italy.
| | - Rosa Carotenuto
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Napoli, Italy.
| | | | - Mimmo Turano
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Napoli, Italy.
| | - Concetta Ambrosino
- IRGS, Biogem, Via Camporeale, Ariano Irpino, 83031 Avellino, Italy.
- Dipartimento di Scienze e Tecnologie, Università del Sannio, Via Port'Arsa 11, 82100 Benevento, Italy.
| | - Teresa Capriglione
- Dipartimento di Biologia, Università di Napoli Federico II, Via Cinthia 21, 80126 Napoli, Italy.
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