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Li Z, Chen C, Ying P, Ji-Jun G, Lian-Jie D, Dan H, Xuan-Min Z, Tian-Yue G, Chao Z, Jia-Hu H. Bisphenol A and its analogue bisphenol S exposure reduce estradiol synthesis via the ROS-mediated PERK/ATF4 signaling pathway. Food Chem Toxicol 2023; 182:114179. [PMID: 37944787 DOI: 10.1016/j.fct.2023.114179] [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: 07/10/2023] [Revised: 10/06/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
As a kind of endocrine-disrupting chemicals, BPA may affect the human placenta. Due to consumer unease about BPA, many manufacturers are using alternatives to BPA, such as BPS. However, some reports suggest that BPS may produce similar results to BPA. To understand how BPA/BPS leads to reduced synthesis of placental estradiol (E2), we conducted studies using a human choriocarcinoma cell (JEG-3) model for research. In this study. Elisa assay revealed that both BPA/BPS exposures decreased E2 synthesis in JEG-3 cells. The results of RT-PCR showed that both BPA and BPS could reduce the mRNA expression of CYP19A1, a key enzyme for E2 synthesis in JEG-3 cells. In addition, Western blot assay showed that BPA/BPS-induced ER-stress PERK/eIF2α/ATF4 signaling protein expression was increased. The expression of ROS in cells after exposure to BPA/BPS was detected using the 2,7-dichlorodihydrofluorescein diacetate (DCF-DA) method. The results of this experiment showed that BPA/BPS significantly induced an inhibition of ROS in JEG-3 cells. The present study concluded that, firstly, BPS exposure induced almost the same effect as BPA in reducing E2 synthesis in JEG-3 cells. Second, BPA/BPS exposure may reduce E2 synthesis in JEG-3 cells by increasing ROS levels and thus activating endoplasmic reticulum stress.
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Affiliation(s)
- Zhou Li
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Chen Chen
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Pan Ying
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Gu Ji-Jun
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Dou Lian-Jie
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Huang Dan
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Zou Xuan-Min
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Guan Tian-Yue
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China
| | - Zhang Chao
- Teaching Center for Preventive Medicine, School of Public Health, Anhui Medical University, Hefei, China.
| | - Hao Jia-Hu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui, Medical University, Hefei, China.
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Tang C, Jin M, Ma B, Cao B, Lin C, Xu S, Li J, Xu Q. RGS2 promotes estradiol biosynthesis by trophoblasts during human pregnancy. Exp Mol Med 2023; 55:240-252. [PMID: 36653442 PMCID: PMC9898290 DOI: 10.1038/s12276-023-00927-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 11/18/2022] [Accepted: 11/27/2022] [Indexed: 01/19/2023] Open
Abstract
Production of estradiol (E2) by the placenta during human pregnancy ensures successful maintenance of placental development and fetal growth by stimulating trophoblast proliferation and the differentiation of cytotrophoblasts into syncytiotrophoblasts. Decreased levels of E2 are closely associated with obstetrical diseases such as preeclampsia (PE) in the clinic. However, the mechanisms underlying the inhibition of placental E2 biosynthesis remain poorly understood. Here, we report that regulator of G-protein signaling 2 (RGS2) affects E2 levels by regulating aromatase, a rate-limiting enzyme for E2 biosynthesis, by using human trophoblast-derived JEG-3 cells and human placental villus tissues. RGS2 enhanced the protein degradation of the transcription factor heart and neural crest derivatives expressed 1 (HAND1) by suppressing ubiquitin-specific protease 14 (USP14)-mediated deubiquitination of HAND1, resulting in the restoration of HAND1-induced trans-inactivation of the aromatase gene and subsequent increases in E2 levels. However, aromatase bound to RGS2 and repressed RGS2 GTPase activating protein (GAP) activity. Moreover, we observed a positive correlation between RGS2 and aromatase expression in clinical normal and preeclamptic placental tissues. Our results uncover a hitherto uncharacterized role of the RGS2-aromatase axis in the regulation of E2 production by human placental trophoblasts, which may pinpoint the molecular pathogenesis and highlight potential biomarkers for related obstetrical diseases.
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Affiliation(s)
- Chao Tang
- National Clinical Research Center for Child Health of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China.
| | - Meiyuan Jin
- grid.417168.d0000 0004 4666 9789Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou, 310012 China
| | - Bingbing Ma
- grid.13402.340000 0004 1759 700X Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058 China
| | - Bin Cao
- grid.433871.aZhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310057 China
| | - Chao Lin
- grid.13402.340000 0004 1759 700XDepartment of Neurosurgery, The Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310052 China
| | - Shouying Xu
- grid.13402.340000 0004 1759 700XNational Clinical Research Center for Child Health of the Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310052 China
| | - Jiayong Li
- grid.12981.330000 0001 2360 039XState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
| | - Qiang Xu
- grid.13402.340000 0004 1759 700XNational Clinical Research Center for Child Health of the Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310052 China
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de Aguiar Greca SC, Kyrou I, Pink R, Randeva H, Grammatopoulos D, Silva E, Karteris E. Involvement of the Endocrine-Disrupting Chemical Bisphenol A (BPA) in Human Placentation. J Clin Med 2020; 9:jcm9020405. [PMID: 32028606 PMCID: PMC7074564 DOI: 10.3390/jcm9020405] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/22/2020] [Accepted: 01/23/2020] [Indexed: 12/16/2022] Open
Abstract
Background: Endocrine-disrupting chemicals (EDCs) are environmental chemicals/toxicants that humans are exposed to, interfering with the action of multiple hormones. Bisphenol A (BPA) is classified as an EDC with xenoestrogenic activity with potentially adverse effects in reproduction. Currently, a significant knowledge gap remains regarding the complete spectrum of BPA-induced effects on the human placenta. As such, the present study examined the effects of physiologically relevant doses of BPA in vitro. Methods: qRT-PCR, Western blotting, immunofluorescence, ELISA, microarray analyses, and bioinformatics have been employed to study the effects of BPA using nonsyncytialised (non-ST) and syncytialised (ST) BeWo cells. Results: Treatment with 3 nM BPA led to an increase in cell number and altered the phosphorylation status of p38, an effect mediated primarily via the membrane-bound estrogen receptor (GPR30). Nonbiased microarray analysis identified 1195 and 477 genes that were differentially regulated in non-ST BeWo cells, whereas in ST BeWo cells, 309 and 158 genes had altered expression when treated with 3 and 10 nM, respectively. Enriched pathway analyses in non-ST BeWo identified a leptin and insulin overlap (3 nM), methylation pathways (10 nM), and differentiation of white and brown adipocytes (common). In the ST model, most significantly enriched were the nuclear factor erythroid 2-related factor 2 (NRF2) pathway (3 nM) and mir-124 predicted interactions with cell cycle and differentiation (10 nM). Conclusion: Collectively, our data offer a new insight regarding BPA effects at the placental level, and provide a potential link with metabolic changes that can have an impact on the developing fetus.
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Affiliation(s)
| | - Ioannis Kyrou
- Aston Medical Research Institute, Aston Medical School, Aston University, Birmingham B4 7ET, UK;
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM), University Hospitals Coventry and Warwickshire NHS Trust, Coventry CV2 2DX, UK
- Institute of Precision Diagnostics and Translational Medicine, UHCW NHS Trust, Coventry CV4 7AL, UK; (H.R.); (D.G.)
- Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
| | - Ryan Pink
- Dept of Bio. & Med. Sci., Oxford Brookes University, Oxford OX3 0BP, UK;
| | - Harpal Randeva
- Institute of Precision Diagnostics and Translational Medicine, UHCW NHS Trust, Coventry CV4 7AL, UK; (H.R.); (D.G.)
- Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
| | - Dimitris Grammatopoulos
- Institute of Precision Diagnostics and Translational Medicine, UHCW NHS Trust, Coventry CV4 7AL, UK; (H.R.); (D.G.)
- Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
| | - Elisabete Silva
- College of Health and Life Sciences, Brunel University London, Uxbridge UB8 3PH, UK;
- Correspondence: (E.S.); (E.K.)
| | - Emmanouil Karteris
- College of Health and Life Sciences, Brunel University London, Uxbridge UB8 3PH, UK;
- Correspondence: (E.S.); (E.K.)
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Allbrand M, Åman J, Nilsson K, Cao Y, Lodefalk M. Expression of genes involved in inflammation and growth - does sampling site in human full-term placenta matter? J Perinat Med 2019; 47:539-546. [PMID: 30920955 DOI: 10.1515/jpm-2018-0290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 01/31/2019] [Indexed: 12/21/2022]
Abstract
Objective To investigate the placental gene expression of substances in the inflammatory cascade and growth factors at nine different well-defined sampling sites in full-term placentas from 12 normal weight healthy non-smoking women with an uncomplicated singleton pregnancy. Methods All placentas (six girls and six boys) were delivered vaginally. Quantitative real-time polymerase chain reaction was used to analyze toll receptor-2 and -4, interleukin-6 and -8, tumor necrosis factor-α, leptin, ghrelin, insulin-like growth factor-1 and -2, hepatocyte growth factor, hepatocyte growth factor receptor and insulin receptor (IR). Results The leptin gene and the IR gene showed higher expression in lateral regions near the chorionic plate compared to central regions near the basal plate (P = 0.028 and P = 0.041, respectively). Conclusion Our results suggest that the sampling site may influence the gene expression for leptin and IR in placental tissue obtained from full-term normal pregnancies. We speculate that this may be due to differences in placental structure and perfusion and may be important when future studies are designed.
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Affiliation(s)
- Marianne Allbrand
- Department of Obstetrics and Gynecology, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Jan Åman
- Department of Pediatrics, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Kerstin Nilsson
- Department of Obstetrics and Gynecology, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Yang Cao
- Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, Örebro, Sweden.,Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Maria Lodefalk
- Department of Pediatrics, School of Medical Sciences, Örebro University, Örebro, Sweden.,University Health Care Research Center, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
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Effects of Bisphenol A on endogenous retroviral envelopes expression and trophoblast fusion in BeWo cells. Reprod Toxicol 2019; 89:35-44. [PMID: 31278978 DOI: 10.1016/j.reprotox.2019.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 06/19/2019] [Accepted: 07/02/2019] [Indexed: 12/23/2022]
Abstract
Placenta is a target organ of Bisphenol A (BPA). To investigate possible effects on syncytiotrophoblast, the exchanging surface between mother and fetus, we exposed a trophoblast model (BeWo) to BPA concentrations occurring in humans (1 and 50 nM). We assessed the gene and protein expression of three human endogenous retroviral envelopes, specifically expressed in placenta (ERVW-1, ERVFRD-1 and ERV3-1), the secretion of β-hCG, the extent of trophoblast fusion and the activity of apoptosis markers (caspases 8, 3, 9 and PARP); additionally, the gene expression of transcription factors regulating HERV expression (i.e. GCM1, PPARγ, ERα and ERβ) was evaluated. At 50 nM, BPA induced ERVW-1, ERVFRD-1 and the corresponding syncytin proteins, ERV3-1, PPARγ, ERα and ERβ expression, increased β-hCG secretion and BeWo cells fusion, thus promoting the syncytiotrophoblast phenotype. The results support placenta as a target organ of BPA. Possible implications on fetal and pregnancy health should be carefully considered.
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6
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Silva JF, Ocarino NM, Serakides R. Spatiotemporal expression profile of proteases and immunological, angiogenic, hormonal and apoptotic mediators in rat placenta before and during intrauterine trophoblast migration. Reprod Fertil Dev 2018; 29:1774-1786. [PMID: 27737730 DOI: 10.1071/rd16280] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/19/2016] [Indexed: 12/15/2022] Open
Abstract
The gene and/or protein expression of proteases and immunological, angiogenic, hormonal and apoptotic mediators was evaluated in rat placenta before and during intrauterine trophoblast migration. The depth of interstitial and endovascular intrauterine trophoblast invasion and the immunohistochemical expression of vascular endothelial growth factor (VEGF), fetal liver kinase 1 (Flk1), interferon (IFN)-γ, migration inhibitory factor (MIF), and inducible nitric oxide synthase (iNOS; also known as nitric oxide synthase (NOS) 2) were evaluated. In addition, the expression of the Vegf, Flk1, placental growth factor (Pigf), soluble fms-like tyrosine kinase 1 (sFlt1), placental lactogen 1 (Pl1), proliferin-related protein (rPlf), placental leptin (Lep), Toll-like receptor 2 (Tlr2), Toll-like receptor 4 (Tlr4), Infg, Mif, tumour necrosis factor-α (Tnf), interleukin-10 (Il10), Nos2, caspase 3 (Casp3), Bax, Bcl2, matrix metalloproteinase 2 (Mmp2) and matrix metalloproteinase 9 (Mmp9) genes was determined by real-time reverse transcription-polymerase chain reaction. At 10 days gestation, gene expression of Tlr2, Tlr4, Tnf, Infg, Il10, Casp3, Pigf, sFlt1 and Lep (P<0.05) were higher than at 14 and/or 19 days of gestation. The beginning of intrauterine trophoblast invasion, i.e., at 14 days of gestation, coincided with higher gene and/or protein expression of MMP9, VEGF, Flk1, NOS2, MIF, BAX and rPlf compared to days 10 and 19 (P<0.05). In contrast, gene expression of Mmp2 and Pl1 was higher at the end of trophoblast invasion compared to 10 and 14 days of gestation (P<0.05). In conclusion, before intrauterine trophoblast migration, expression of TLRs and immunological and pro-apoptotic mediators is higher, whereas the beginning of trophoblast migration is characterised by higher expression of the pro-angiogenic factors NOS2 and MMP9. In contrast, MMP2 and PL1 expression is higher at the end of intrauterine trophoblast migration.
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Affiliation(s)
- Juneo F Silva
- Laboratório de Histologia Animal, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Rodovia Jorge Amado, Km 16, 45662-900, Ilhéus, Bahia, Brazil
| | - Natália M Ocarino
- Laboratório de Patologia, Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Avenida Antônio Carlos, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | - Rogéria Serakides
- Laboratório de Patologia, Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Avenida Antônio Carlos, 31270-901, Belo Horizonte, Minas Gerais, Brazil
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7
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Thibeault AAH, Sanderson JT, Vaillancourt C. Co-culture of H295R Adrenocortical Carcinoma and BeWo Choriocarcinoma Cells to Study Feto-placental Interactions: Focus on Estrogen Biosynthesis. Methods Mol Biol 2018; 1710:295-304. [PMID: 29197012 DOI: 10.1007/978-1-4939-7498-6_23] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Estrogens are produced in large amounts during pregnancy, as a result of a tightly regulated cooperation between the maternal and fetal adrenal cortex, which produce androgen precursors, and the placental villous trophoblast, which transforms these precursors into estrogens. These estrogens play an important role in proper placental function, in adaptation of the mother to pregnancy, as well as in adequate fetal development. Disruption of estrogen production is associated with poor pregnancy outcomes and fetal malformation or altered fetal programming. Pregnant women may be exposed to endocrine disruptors from environmental sources or medications, and it is crucial to study the effects of such compounds on feto-placental steroidogenesis. The H295R/BeWo co-culture model offers the opportunity to study these interactions, by making it possible to evaluate the effects of chemical exposures on androgen and estrogen biosynthesis, as well as on various other aspects of feto-placental communication.
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Affiliation(s)
- Andrée-Anne Hudon Thibeault
- INRS - Institut Armand-Frappier, 531, Boulevard des Prairies, Laval, QC, Canada, H7V 1B7.,BioMed Research Centre, Université du Québec à Montréal, C.P. 8888, succ. Centre-ville, Montréal, QC, Canada, H3C 3P8.,Center for Interdisciplinary Research on Well-Being, Health, Society and Environment (CINBIOSE), Université du Québec à Montréal, C.P. 8888, succ. Centre-ville, Montréal, QC, Canada, H3C 3P8
| | - J Thomas Sanderson
- INRS - Institut Armand-Frappier, 531, Boulevard des Prairies, Laval, QC, Canada, H7V 1B7.
| | - Cathy Vaillancourt
- INRS - Institut Armand-Frappier, 531, Boulevard des Prairies, Laval, QC, Canada, H7V 1B7. .,BioMed Research Centre, Laval, QC, Canada. .,Center for Interdisciplinary Research on Well-Being, Health, Society and Environment (CINBIOSE), Université du Québec à Montréal, C.P. 8888, succ. Centre-ville, Montréal, QC, Canada, H3C 3P8.
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8
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Schanton M, Maymó JL, Pérez-Pérez A, Sánchez-Margalet V, Varone CL. Involvement of leptin in the molecular physiology of the placenta. Reproduction 2017; 155:R1-R12. [PMID: 29018059 DOI: 10.1530/rep-17-0512] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/28/2017] [Accepted: 10/09/2017] [Indexed: 12/26/2022]
Abstract
Leptin is a homeostatic regulator in the placenta where it promotes proliferation, protein synthesis and the expression of tolerogenic maternal response molecules such as HLA-G. Leptin also exerts an anti-apoptotic action in placenta controlling the expression of p53 master cell cycle regulator under different stress conditions. On the other hand, leptin is an integrative target of different placental stimuli. The expression of leptin in placenta is regulated by hCG, insulin, steroids, hypoxia and many other growth hormones, suggesting that it might have an important endocrine function in the trophoblastic cells. The leptin expression is induced involving the cAMP/PKA or cAMP/Epac pathways which have profound actions upon human trophoblast function. The activation of PI3K and MAPK pathways also participates in the leptin expression. Estrogens play a central role during pregnancy, particularly 17β-estradiol upregulates the leptin expression in placental cells through genomic and non-genomic actions. The leptin promoter analysis reveals specific elements that are active in placental cells. The transcription factors CREB, AP1, Sp1, NFκB and the coactivator CBP are involved in the placental leptin expression. Moreover, placental leptin promoter is a target of epigenetic marks such as DNA methylation and histone acetylation that regulates not only the leptin expression in placenta during pregnancy but also determines the predisposition of acquiring adult metabolism diseases. Taken together, all these results allow a better understanding of leptin function and regulatory mechanisms of leptin expression in human placental trophoblasts, and support the importance of leptin during pregnancy and in programming adult health.
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Affiliation(s)
- Malena Schanton
- Departamento de Química BiológicaUniversidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina.,Universidad de Buenos AiresCONICET, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Buenos Aires, Argentina
| | - Julieta L Maymó
- Departamento de Química BiológicaUniversidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina.,Universidad de Buenos AiresCONICET, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Buenos Aires, Argentina
| | - Antonio Pérez-Pérez
- Departamento de Bioquímica Médica y Biología MolecularHospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, España
| | - Víctor Sánchez-Margalet
- Departamento de Bioquímica Médica y Biología MolecularHospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, España
| | - Cecilia L Varone
- Departamento de Química BiológicaUniversidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina .,Universidad de Buenos AiresCONICET, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Buenos Aires, Argentina
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9
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Schanton M, Maymó J, Pérez-Pérez A, Gambino Y, Maskin B, Dueñas JL, Sánchez-Margalet V, Varone C. Sp1 transcription factor is a modulator of estradiol leptin induction in placental cells. Placenta 2017; 57:152-162. [DOI: 10.1016/j.placenta.2017.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 07/03/2017] [Accepted: 07/06/2017] [Indexed: 11/29/2022]
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10
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Interferon-τ increases BoLA-I for implantation during early pregnancy in dairy cows. Oncotarget 2017; 8:95095-95107. [PMID: 29221114 PMCID: PMC5707008 DOI: 10.18632/oncotarget.19282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 06/09/2017] [Indexed: 12/21/2022] Open
Abstract
Interferon-τ (IFN-τ) signals pregnancy recognition in ruminants. We investigated the effects of IFN-τ produced by embryo trophoblastic cells (ETCs) on expression of bovine leukocyte antigen-I (BoLA-I), a bovine analogue of human MHC-I, in endometrial luminal epithelial cells (EECs) during early pregnancy in dairy cows. Expression of IFN-τ and BoLA-I was increased in endometrial tissues during early pregnancy. Expression of the anti-inflammatory cytokine IL-10 was increased in endometrial tissues, while expression of the pro-inflammatory cytokine IL-6 was decreased, indicating immunosuppression. Progesterone increased IFN-τ expression in EECs. IFN-τ increased p-STAT1 and p-STAT3 levels in EECs, but reduced TRAF3 levels. In addition, IFN-τ increased expression of BoLA-I and IL-10, but decreased expression of IL-6 in EECs. These results indicate that IFN-τ enables stable implantation in dairy cows by increasing expression of BoLA-I, and by immunosuppression mediated by increased IL-10 and decreased IL-6 expression.
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11
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Dos Santos E, Duval F, Vialard F, Dieudonné MN. The roles of leptin and adiponectin at the fetal-maternal interface in humans. Horm Mol Biol Clin Investig 2016; 24:47-63. [PMID: 26509784 DOI: 10.1515/hmbci-2015-0031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 08/25/2015] [Indexed: 11/15/2022]
Abstract
Infertility now affects one in seven couples, and the prevalence of this condition continues to increase. Ovulatory defects and unknown causes account for more than half of the cases of infertility. It has been postulated that a significant proportion of these cases are directly or indirectly related to obesity, since the presence of excess adipose tissue has a variety of effects on reproductive function. Here, we review on the effects of the two major adipokines (leptin and adiponectin) on fertility, with a focus on the first steps in embryo implantation and the key components of fetal-maternal interface (the placenta and the endometrium). These adipokines are reportedly involved in the regulation of cell proliferation and differentiation, and as such affect local angiogenesis, immune tolerance and inflammatory processes in placental and endometrial tissues. In placental cells, leptin and adiponectin also modulate trophoblast invasiveness and the nutrient supply. These observations strongly suggest by interfering with the placenta and endometrium, adipokines can create a favorable environment for embryo implantation and have a key role in fetal-maternal metabolism, fetal-maternal communication, and gestation. Given that reproductive functions are tightly coupled to the energy balance, metabolic abnormalities may lead to the development of complications of pregnancy and changes in fetal growth. In this context, we suggest that the leptin/adiponectin ratio may be a clinically valuable marker for detecting a number of pathologies in pregnancy.
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12
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Li W, Xu L, Chen Y, Mu L, Cheng M, Xu W, Zhuang J, Zhang J. Effect of estrodiol on leptin receptors expression in regulating fat distribution and adipocyte genesis. Gynecol Endocrinol 2016; 32:464-8. [PMID: 26757619 DOI: 10.3109/09513590.2015.1130810] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To examine how estradiol influence fat distribution and adipocyte genesis through regulating leptin function. DESIGN AND METHODS We randomized female SD rats into ovariectomy and sham group. After 14 weeks, we examined leptin receptor expression in perigenital, mesenteric and subcutaneous adipose tissues and leptin in serum. We further introduced mesenchymal stem cells (MSCs) to figure out the effect of 17-β estradiol on expression of leptin receptors (OBRb and OBRa), leptin and PPARγ2. RESULTS Weight and Lee's index was both significantly higher in ovariectomized group than sham group (p < 0.001). The interaction of serum E2 and leptin was negatively correlated with body weight. Expression of leptin receptor protein was extremely upregulated in ovariectomized group in perigenital and mesenteric fat. Both estradiol and leptin upregulated mRNA expression of OBRb, and created a dose-dependent decreasing manner in MSCs. Higher doses of estradiol (10(-7)-10(-5) M) inhibited adipogenic markers mRNA expression of leptin and PPARγ2, but low doses promoted leptin expression. CONCLUSIONS In ovariectomized rats, low level of serum estradiol may change body composition and promote adipocyte genesis through affecting leptin function.
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Affiliation(s)
- Wenjuan Li
- a Department of Obstetrics and Gynecology , West China Second University Hospital, Sichuan University , Chengdu , China and
| | - Liangzhi Xu
- a Department of Obstetrics and Gynecology , West China Second University Hospital, Sichuan University , Chengdu , China and
| | - Yan Chen
- a Department of Obstetrics and Gynecology , West China Second University Hospital, Sichuan University , Chengdu , China and
| | - Li Mu
- a Department of Obstetrics and Gynecology , West China Second University Hospital, Sichuan University , Chengdu , China and
| | - Meng Cheng
- a Department of Obstetrics and Gynecology , West China Second University Hospital, Sichuan University , Chengdu , China and
| | - Wenming Xu
- b The Joint Laboratory for Reproductive Medicine of Sichuan University, The Chinese University of Hong Kong , Hong Kong
| | - Jing Zhuang
- a Department of Obstetrics and Gynecology , West China Second University Hospital, Sichuan University , Chengdu , China and
| | - Jing Zhang
- a Department of Obstetrics and Gynecology , West China Second University Hospital, Sichuan University , Chengdu , China and
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Silva JF, Serakides R. Intrauterine trophoblast migration: A comparative view of humans and rodents. Cell Adh Migr 2016; 10:88-110. [PMID: 26743330 DOI: 10.1080/19336918.2015.1120397] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Trophoblast migration and invasion through the decidua and maternal uterine spiral arteries are crucial events in placentation. During this process, invasive trophoblast replace vascular endothelial cells as the uterine arteries are remodeled to form more permissive vessels that facilitate adequate blood flow to the growing fetus. Placentation failures resulting from either extensive or shallow trophoblastic invasion can cause pregnancy complications such as preeclampsia, intrauterine growth restriction, placenta creta, gestational trophoblastic disease and even maternal or fetal death. Consequently, the use of experimental animal models such as rats and mice has led to great progress in recent years with regards to the identification of mechanisms and factors that control trophoblast migration kinetics. This review aims to perform a comparative analysis of placentation and the mechanisms and factors that coordinate intrauterine trophoblast migration in humans, rats and mice under physiological and pathological conditions.
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Affiliation(s)
- Juneo F Silva
- a Laboratório de Endocrinologia e Metabolismo, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
| | - Rogéria Serakides
- b Laboratório de Patologia, Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
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14
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Chen T, Chen S, Ren C, Hu C, Tang D, Yan A. Two isoforms of leptin in the White-clouds Mountain minnow (Tanichthys albonubes): Differential regulation by estrogen despite similar response to fasting. Gen Comp Endocrinol 2016; 225:174-184. [PMID: 26386182 DOI: 10.1016/j.ygcen.2015.08.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/28/2015] [Accepted: 08/01/2015] [Indexed: 01/03/2023]
Abstract
Leptin has been well-established as a canonical anorexic peptide hormone in mammals, though much of its function in fish remains obscure. In this study, the cDNAs of two leptin isoforms (leptin-A and leptin-B) were cloned from the liver of a small cyprinid fish, Tanichthys albonubes. The two T. albonubes leptins, sharing low primary amino acid sequence homology with their mammalian counterparts, and between themselves, are highly conserved in three-dimensional protein structures and gene structures. Liver is a major source of leptin mRNA in T. albonubes with leptin-A being the dominant form. The expression of hepatic leptin-A but not leptin-B mRNA in female fish is significantly higher than in male fish. Transcriptional hepatic levels of leptin-A and leptin-B in both male and female fish were demonstrated to increase after long-term fasting (10-25days) but decline upon re-feeding (3days). Strikingly, estrogen (E2) administration induced only leptin-A but not leptin-B hepatic mRNA expression in both male and female fish. Our study here provides the first evidence for differential regulation of two leptins in fish, and sheds new light on the possible origin of leptin in lower vertebrates.
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Affiliation(s)
- Ting Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, China.
| | - Shuang Chen
- Department of Anatomy, University of Hong Kong, Hong Kong, China.
| | - Chunhua Ren
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, China.
| | - Chaoqun Hu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, China.
| | | | - Aifen Yan
- College of Medicine, Foshan University, Foshan, China.
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15
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Toro AR, Pérez-Pérez A, Corrales Gutiérrez I, Sánchez-Margalet V, Varone CL. Mechanisms involved in p53 downregulation by leptin in trophoblastic cells. Placenta 2015; 36:1266-75. [PMID: 26386653 DOI: 10.1016/j.placenta.2015.08.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 08/09/2015] [Accepted: 08/30/2015] [Indexed: 11/15/2022]
Abstract
Leptin, a 16-kDa polypeptide hormone, is produced by the adipocyte and can also be synthesized by placenta. We previously demonstrated that leptin promotes proliferation and survival in placenta, in part mediated by the p53 pathway. In this work, we investigated the mechanisms involved in leptin down-regulation of p53 level. The human first trimester cytotrophoblastic Swan-71 cell line and human placental explants at term were used. In order to study the late phase of apoptosis, triggered by serum deprivation, experiments of DNA fragmentation were carried out. Exogenous leptin added to human placental explants, showed a decrease on DNA ladder formation and MAPK pathway is involved in this leptin effect. We also found that under serum deprivation condition, leptin decreases p53 levels and the inhibitory leptin effect is lost when cells were pretreated with 50 μM PD98059 or 10 μM LY29004; or were transfected with dominant negative mutants of intermediates of these pathways, suggesting that MAPK and PI3K signaling pathways are necessaries for leptin action. Additionally, leptin diminished Ser-46 p53 phosphorylation and this effect in placental explants was mediated by the activation of MAPK and PI3K pathways. Finally, in order to assess leptin effect on p53 half-life experiments with cycloheximide were performed and MDM-2 expression was analyzed. Leptin diminished p53 half-life and up-regulated MDM-2 expression. In summary, we provided evidence suggesting that leptin anti-apoptotic effect is mediated by MAPK and PI3K pathways.
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Affiliation(s)
- Ayelén Rayen Toro
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IQUIBICEN, CONICET, Buenos Aires, Argentina
| | - Antonio Pérez-Pérez
- Departamento de Bioquímica Médica y Biología Molecular, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, Spain
| | - Isabel Corrales Gutiérrez
- Departamento de Bioquímica Médica y Biología Molecular, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, Spain
| | - Víctor Sánchez-Margalet
- Departamento de Bioquímica Médica y Biología Molecular, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, Spain
| | - Cecilia Laura Varone
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IQUIBICEN, CONICET, Buenos Aires, Argentina.
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Pérez-Pérez A, Sánchez-Jiménez F, Maymó J, Dueñas JL, Varone C, Sánchez-Margalet V. Role of leptin in female reproduction. Clin Chem Lab Med 2015; 53:15-28. [PMID: 25014521 DOI: 10.1515/cclm-2014-0387] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 06/16/2014] [Indexed: 12/26/2022]
Abstract
Reproductive function is dependent on energy resources. The role of weight, body composition, fat distribution and the effect of diet have been largely investigated in experimental female animals as well as in women. Any alteration in diet and/or weight may induce abnormalities in timing of sexual maturation and fertility. However, the cellular mechanisms involved in the fine coordination of energy balance and reproduction are largely unknown. The brain and hypothalamic structures receive endocrine and/or metabolic signals providing information on the nutritional status and the degree of fat stores. Adipose tissue acts both as a store of energy and as an active endocrine organ, secreting a large number of biologically important molecules termed adipokines. Adipokines have been shown to be involved in regulation of the reproductive functions. The first adipokine described was leptin. Extensive research over the last 10 years has shown that leptin is not only an adipose tissue-derived messenger of the amount of energy stores to the brain, but also a crucial hormone/cytokine for a number of diverse physiological processes, such as inflammation, angiogenesis, hematopoiesis, immune function, and most importantly, reproduction. Leptin plays an integral role in the normal physiology of the reproductive system with complex interactions at all levels of the hypothalamic-pituitary gonadal (HPG) axis. In addition, leptin is also produced by placenta, where it plays an important autocrine function. Observational studies have demonstrated that states of leptin excess, deficiency, or resistance can be associated with abnormal reproductive function. This review focuses on the leptin action in female reproduction.
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Tait S, Tassinari R, Maranghi F, Mantovani A. Bisphenol A affects placental layers morphology and angiogenesis during early pregnancy phase in mice. J Appl Toxicol 2015; 35:1278-91. [PMID: 26063408 DOI: 10.1002/jat.3176] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 04/10/2015] [Accepted: 04/19/2015] [Indexed: 12/29/2022]
Abstract
Bisphenol A (BPA) is a widespread endocrine disrupter mainly used in food contact plastics. Much evidence supports the adverse effects of BPA, particularly on susceptible groups such as pregnant women. The present study considered placental development - relevant for pregnancy outcomes and fetal nutrition/programming - as a potential target of BPA. Pregnant CD-1 mice were administered per os with vehicle, 0.5 (BPA05) or 50 mg kg(-1) (BPA50) body weight day(-1) of BPA, from gestational day (GD) 1 to GD11. At GD12, BPA50 induced significant degeneration and necrosis of giant cells, increased vacuolization in the junctional zone in the absence of glycogen accumulation and reduction of the spongiotrophoblast layer. In addition, BPA05 induced glycogen depletion as well as significant nuclear accumulation of β-catenin in trophoblasts of labyrinthine and spongiotrophoblast layers, supporting the activation of the Wnt/β-catenin pathway. Transcriptomic analysis indicated that BPA05 promoted and BPA50 inhibited blood vessel development and branching; morphologically, maternal vessels were narrower in BPA05 placentas, whereas embryonic and maternal vessels were irregularly dilated in the labyrinth of BPA50 placentas. Quantitative polymerase chain reaction evidenced an estrogen receptor β induction by BPA50, which did not correspond to downstream genes activation; indeed, the transcription factor binding sites analysis supported the AhR/Arnt complex as regulator of BPA50-modulated genes. Conversely, Creb appeared as the main transcription factor regulating BPA05-modulated genes. Embryonic structures (head, forelimb) showed divergent perturbations upon BPA05 or BPA50 exposure, potentially related to unbalanced embryonic nutrition and/or to modulation of genes involved in embryo development. Our findings support placenta as an important target of BPA, even at environmentally relevant dose levels.
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Affiliation(s)
- Sabrina Tait
- Food and Veterinary Toxicology Unit, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Rome, Italy
| | - Roberta Tassinari
- Food and Veterinary Toxicology Unit, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Rome, Italy
| | - Francesca Maranghi
- Food and Veterinary Toxicology Unit, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Rome, Italy
| | - Alberto Mantovani
- Food and Veterinary Toxicology Unit, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Rome, Italy
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18
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Transcriptomic analysis of human placenta in intrauterine growth restriction. Pediatr Res 2015; 77:799-807. [PMID: 25734244 DOI: 10.1038/pr.2015.40] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 11/13/2014] [Indexed: 01/01/2023]
Abstract
BACKGROUND Intrauterine growth restriction (IUGR) is a frequent complication of pregnancy defined as a restriction of fetal growth. The objective of this work was to improve the knowledge on the pathophysiology of IUGR using a genome-wide method of expression analysis. METHODS We analyzed differentially expressed genes in pooled placental tissues from vascular IUGR (four pools of three placentas) and normal pregnancies (four pools of three placentas) using a long nucleotide microarray platform (Nimblegen). We first did a global bioinformatics analysis based only on P value without any a priori. We secondly focused on "target" genes among the most modified ones. Finally, reverse transcription quantitative polymerase chain reaction (RT-qPCR) was performed on an extended panel of tissue samples (n = 62) on selected "target". RESULTS We identified 636 modified genes among which 206 were upregulated (1.5 and higher; P < 0.05). Groups of patients were classified unambiguously. Genes involved in mitochondrial function and oxidative phosphorylation were decreased affecting three out of five complexes of the respiratory chain of the mitochondria, and thus energy production and metabolism. Among the most induced genes, we identified LEP, IGFBP1, and RBP4. CONCLUSION Complementary studies on the role and function of LEP, IGFBP1, and RBP4 in IUGR pathophysiology and also in fetal programming remain necessary.
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Knabl J, Hiden U, Hüttenbrenner R, Riedel C, Hutter S, Kirn V, Günthner-Biller M, Desoye G, Kainer F, Jeschke U. GDM Alters Expression of Placental Estrogen Receptor α in a Cell Type and Gender-Specific Manner. Reprod Sci 2015; 22:1488-95. [PMID: 25947892 DOI: 10.1177/1933719115585147] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE The nuclear receptor estrogen receptor α (ERα) is one of the key players in energy balance, insulin resistance, and trophoblast differentiation. We tested the hypothesis that gestational diabetes mellitus (GDM) alters expression of placental ERα in a cell type-specific manner and that this regulation may involve epigenetic changes. STUDY DESIGN Expression of ERα was analyzed by immunohistochemistry using the semiquantitative immunoreactive score in 80 placentas (40 GDM/40 controls). Quantitative real-time polymerase chain reaction (PCR) measured ERα messenger RNA (mRNA) in decidual tissue. Methylation-specific PCR was performed to analyze cytosine-phosphatidyl-guanine-island methylation of the ERα promoter. RESULTS Expression of ERα protein is upregulated (P = .011) in GDM in extravillous trophoblasts but not in syncytiotrophoblast. Gestational diabetes mellitus downregulated ERα in decidual vessels only in pregnancies with male but not female fetuses. Furthermore, mRNA of the ERα encoding gene estrogen receptor gene 1 (ESR1) was increased (+1.77 fold) in GDM decidua when compared to controls (P = .024). In parallel, the promoter of ESR1 was methylated only in decidua of healthy control individuals but not in GDM. CONCLUSION Gestational diabetes mellitus affects expression of placental ERα in a cell type-dependent way, on epigenetic level. These data link GDM with epigenetic deregulations of ERα expression and open new insights into the intrauterine programming hypothesis of GDM.
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Affiliation(s)
- Julia Knabl
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany Klinik Hallerwiese, Department of Obstetrics, Nuremberg, Germany
| | - Ursula Hiden
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany Department of Obstetrics and Gynecology, Medical University Graz, Graz, Austria
| | - Rebecca Hüttenbrenner
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany
| | - Christina Riedel
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany Institut für Soziale Pädiatrie und Jugendmedizin, Ludwig-Maximilians-Universität München, Munich, Gemany
| | - Stefan Hutter
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany
| | - Verena Kirn
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany Department of Obstetrics and Gynecology, University Hospital of Cologne, Cologne, Germany
| | - Margit Günthner-Biller
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany
| | - Gernot Desoye
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany Department of Obstetrics and Gynecology, Medical University Graz, Graz, Austria
| | - Franz Kainer
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany Klinik Hallerwiese, Department of Obstetrics, Nuremberg, Germany
| | - Udo Jeschke
- Department of Obstetrics and Gynecology, Ludwig Maximilians Universität München, Campus Innenstadt, Munich, Germany
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20
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Wortman AC, Hernandez JS, Holcomb DS, Wilson KL, McIntire DD, Sheffield JS. Effect of body mass index on maternal morbidity following peripartum hysterectomy. Clin Obes 2015; 5:72-8. [PMID: 25784286 DOI: 10.1111/cob.12090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/18/2015] [Accepted: 02/21/2015] [Indexed: 11/29/2022]
Abstract
The objective of this study was to estimate the impact of maternal body mass index (BMI) on maternal morbidity following unscheduled peripartum hysterectomy. A retrospective cohort study of consecutive peripartum hysterectomies at our institution from 1988 through 2012; scheduled hysterectomies were excluded. Medical records were reviewed and maternal, foetal and surgical data collected for each subject. Maternal BMI was categorized by the National Institute of Health classifications for overweight and obese. Statistical analyses included evaluation for trend. A total of 360,774 women delivered at Parkland Hospital during the study period with 665 (1.8 per 1000 deliveries) unscheduled peripartum hysterectomies performed. BMI was available for 635 women. Gestational diabetes, chronic hypertension and pregnancy-related hypertension were significantly higher in all three obesity categories, P = < 0.01. Post-partum complications, such as venous thrombosis and composite surgical morbidity did not differ among BMI groups. Estimated blood loss and units transfused did not differ across the BMI categories, P = 0.42 and P = 0.38, respectively. Increasing BMI was associated with longer surgical times and more wound infections, P = 0.01. These complications should be considered when approaching a peripartum hysterectomy in patients with obesity.
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Affiliation(s)
- A C Wortman
- Obstetrics and Gynecology, The University of Texas Southwestern Medical School, Dallas, Texas, USA
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21
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Silva JF, Ocarino NM, Serakides R. Placental angiogenic and hormonal factors are affected by thyroid hormones in rats. Pathol Res Pract 2015; 211:226-34. [DOI: 10.1016/j.prp.2014.11.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 10/12/2014] [Accepted: 11/04/2014] [Indexed: 01/02/2023]
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Al-Bader MD, Kilarkaje N, El-Farra A, Al-Abdallah AA. Expression and subcellular localization of metastasis-associated protein 1, its short form, and estrogen receptors in rat placenta. Reprod Sci 2014; 22:484-94. [PMID: 25217305 DOI: 10.1177/1933719114549851] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Metastasis-associated protein 1 (MTA1) and its short form (MTA1s) regulate the function of estrogen receptors (ERs). Estrogens, via ERs, affect placental growth and fetal development, a process that may involve MTA1 signaling. Expression of MTA1, MTA1s, ERα, and ERβ genes and proteins in rat placentas was studied on 16, 19, and 21 days of gestation (dg). The ERβ messenger RNA decreased significantly toward the end of gestation, whereas its protein level increased in the nuclear fraction on 21 dg. Both MTA1 and MTA1s increased with gestation. Decidual, trophoblast giant, glycogen, and villous trophoblast cells expressed MTA1, ERα, and ERβ proteins on all dg with colocalization of MTA1 with ERα and ERβ in the nucleus and cytoplasm. Expression of MTA1 suggests a possible role in regulating placental functions; considering the repressive function of MTA1 on ERs, the expression of MTA1 suggests that placental cells may be less sensitive to estrogens during late pregnancy.
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Affiliation(s)
| | | | - Aseel El-Farra
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait
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Toro AR, Maymó JL, Ibarbalz FM, Pérez AP, Maskin B, Faletti AG, Margalet VS, Varone CL. Leptin is an anti-apoptotic effector in placental cells involving p53 downregulation. PLoS One 2014; 9:e99187. [PMID: 24922063 PMCID: PMC4055782 DOI: 10.1371/journal.pone.0099187] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 05/12/2014] [Indexed: 11/18/2022] Open
Abstract
Leptin, a peripheral signal synthetized by the adipocyte to regulate energy metabolism, can also be produced by placenta, where it may work as an autocrine hormone. We have previously demonstrated that leptin promotes proliferation and survival of trophoblastic cells. In the present work, we aimed to study the molecular mechanisms that mediate the survival effect of leptin in placenta. We used the human placenta choriocarcinoma BeWo and first trimester Swan-71 cell lines, as well as human placental explants. We tested the late phase of apoptosis, triggered by serum deprivation, by studying the activation of Caspase-3 and DNA fragmentation. Recombinant human leptin added to BeWo cell line and human placental explants, showed a decrease on Caspase-3 activation. These effects were dose dependent. Maximal effect was achieved at 250 ng leptin/ml. Moreover, inhibition of endogenous leptin expression with 2 µM of an antisense oligonucleotide, reversed Caspase-3 diminution. We also found that the cleavage of Poly [ADP-ribose] polymerase-1 (PARP-1) was diminished in the presence of leptin. We analyzed the presence of low DNA fragments, products from apoptotic DNA cleavage. Placental explants cultivated in the absence of serum in the culture media increased the apoptotic cleavage of DNA and this effect was prevented by the addition of 100 ng leptin/ml. Taken together these results reinforce the survival effect exerted by leptin on placental cells. To improve the understanding of leptin mechanism in regulating the process of apoptosis we determined the expression of different intermediaries in the apoptosis cascade. We found that under serum deprivation conditions, leptin increased the anti-apoptotic BCL-2 protein expression, while downregulated the pro-apoptotic BAX and BID proteins expression in Swan-71 cells and placental explants. In both models leptin augmented BCL-2/BAX ratio. Moreover we have demonstrated that p53, one of the key cell cycle-signaling proteins, is downregulated in the presence of leptin under serum deprivation. On the other hand, we determined that leptin reduced the phosphorylation of Ser-46 p53 that plays a pivotal role for apoptotic signaling by p53. Our data suggest that the observed anti-apoptotic effect of leptin in placenta is in part mediated by the p53 pathway. In conclusion, we provide evidence that demonstrates that leptin is a trophic factor for trophoblastic cells.
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Affiliation(s)
- Ayelén Rayen Toro
- Departamento de Química Biológica, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Julieta Lorena Maymó
- Departamento de Química Biológica, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Federico Matías Ibarbalz
- Departamento de Química Biológica, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Antonio Pérez Pérez
- Departamento de Bioquímica Médica y Biología Molecular, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, España
| | - Bernardo Maskin
- Hospital Nacional Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - Alicia Graciela Faletti
- Centro de Estudios Farmacológicos y Botánicos, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Víctor Sánchez Margalet
- Departamento de Bioquímica Médica y Biología Molecular, Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, España
| | - Cecilia Laura Varone
- Departamento de Química Biológica, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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Lesseur C, Paquette AG, Marsit CJ. Epigenetic Regulation of Infant Neurobehavioral Outcomes. MEDICAL EPIGENETICS 2014; 2:71-79. [PMID: 25089125 PMCID: PMC4116357 DOI: 10.1159/000361026] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
During fetal development and early-infancy, environmental signals can induce epigenetic changes that alter neurobehavioral development and later-life mental health. Several neurodevelopmental genetic diseases influence epigenetic regulatory genes and genomic imprinting. Recently, brain epigenetic marks have been involved in idiopathic neurodevelopmental disorders including autism spectrum disorders (ASD). The placenta is an important regulator of the intrauterine environment that links maternal and fetal nervous systems. Placental epigenetic signatures have been associated with neurodevelopment of healthy newborns quantified through the NICU Network Neurobehavioral Scales (NNNS). Associations have been observed for DNA methylation of genes involved in cortisol (NR3C1, HSD11B), serotonin (HTR2A), and metabolic (LEP) pathways. Dysregulation of imprinted genes and microRNAs has also been associated with neurobehavior assessed by NNNS. Further analysis is needed to characterize the mechanisms by which the epigenome influences neurodevelopment, and the connection between this dysregulation and mental health disorders. In the future, epigenetic marks could serve as functional biomarkers of mental health and cognitive function.
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Affiliation(s)
- Corina Lesseur
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA
| | - Alison G. Paquette
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA
| | - Carmen J. Marsit
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA
- Section of Biostatistics and Epidemiology, Department of Community and Family Medicine, Geisel School of Medicine at Dartmouth and Norris Cotton Cancer Center, 1 Medical Center Drive, 7927 Rubin Building, Lebanon, NH 03756, USA
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25
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Hogg K, Robinson WP, Beristain AG. Activation of endocrine-related gene expression in placental choriocarcinoma cell lines following DNA methylation knock-down. Mol Hum Reprod 2014; 20:677-89. [PMID: 24623739 DOI: 10.1093/molehr/gau020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Increasingly, placental DNA methylation is assessed as a factor in pregnancy-related complications, yet the transcriptional impact of such findings is not always clear. Using a proliferative in vitro placental model, the effect of DNA methylation loss on gene activation was evaluated at a number of genes selected for being differentially methylated in pre-eclampsia-associated placentae in vivo. We aimed to determine whether reduced DNA methylation at specific loci was associated with transcriptional changes at the corresponding gene, thus providing mechanistic underpinnings for previous clinical findings and to assess the degree of transcriptional response amongst our candidate genes. BeWo and JEG3 choriocarcinoma cells were exposed to 1 μM 5-Aza-2'-deoxycytidine (5-Aza-CdR) or vehicle control for 48 h, and re-plated and cultured for a further 72 h in normal media before cells were harvested for RNA and DNA. Bisulphite pyrosequencing confirmed that DNA methylation was reduced by ∼30-50% points at the selected loci studied in both cell lines. Gene activation, measured by qRT-PCR, was highly variable and transcript specific, indicating differential sensitivity to DNA methylation. Most notably, loss of DNA methylation at the leptin (LEP) promoter corresponded to a 200-fold and 40-fold increase in LEP expression in BeWo and JEG3 cells, respectively (P < 0.01). Transcripts of steroidogenic pathway enzymes CYP11A1 and HSD3B1 were up-regulated ∼40-fold in response to 5-Aza-CdR exposure in BeWo cells (P < 0.01). Other transcripts, including aromatase (CYP19), HSD11B2, inhibin (INHBA) and glucocorticoid receptor (NR3C1) were more moderately, although significantly, affected by loss of associated DNA methylation. These data present a mixed effect of DNA methylation changes at selected loci supporting cautionary interpretation of DNA methylation results in the absence of functional data.
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Affiliation(s)
- K Hogg
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada Child & Family Research Institute, Vancouver, BC, Canada
| | - W P Robinson
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada Child & Family Research Institute, Vancouver, BC, Canada
| | - A G Beristain
- Child & Family Research Institute, Vancouver, BC, Canada Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, BC, Canada
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Silva JF, Ocarino NM, Serakides R. Maternal thyroid dysfunction affects placental profile of inflammatory mediators and the intrauterine trophoblast migration kinetics. Reproduction 2014; 147:803-16. [PMID: 24534949 DOI: 10.1530/rep-13-0374] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The objective of the present study was to evaluate the gene and immunohistochemical expression of inflammatory mediators involved in the immune activity and the intrauterine trophoblast migration of the placentas in hypothyroid and L-thyroxine (L-T4)-treated rats. A total of 144 adult female rats were divided equally into hypothyroid, l-T4-treated, and euthyroid (control) groups. Hypothyroidism was induced by daily administration of propylthiouracil. Rats were killed at 0, 10, 14, 15, 16, 17, 18, and 19 days of gestation. We evaluated the depth of interstitial and endovascular intrauterine trophoblast invasion and the immunohistochemical expression of interferon γ (INFy), migration inhibitory factor (MIF), and inducible nitric oxide synthase (NOS2 (iNOS)). The gene expression of Toll-like receptor 2 (Tlr2) and Tlr4, Infy, Mif, tumor necrosis factor (Tnf (Tnfα)), Il10, Nos2, matrix metalloproteinase 2 (Mmp2) and Mmp9, and placental leptin was also measured in placental disks by real-time RT-PCR. The data were analyzed using an Student-Newman-Keuls (SNK) test. Hypothyroidism reduced the endovascular and interstitial trophoblast migration, and the expression of TLR4, INFy, MIF, interleukin 10 (IL10), NOS2, MMP2 and MMP9, and placental leptin, while increased the expression of TLR2 (P<0.05). T4-treated rats not only increased the expression of IL10 and NOS2 but also reduced the expression of TNF and MIF at 10 days of gestation (P<0.05). However, at 19 days of gestation, expression of INFy and MIF was increased in T4-treated group (P<0.05). Excess of T4 also increased the gene expression of Mmp2 at 10 days of gestation (P<0.05), but reduced the endovascular trophoblast migration at 18 days of gestation (P<0.05). Hypothyroidism and excess of T4 differentially affect the immune profile and the intrauterine trophoblast migration of the placenta, and these effects are dependent on the gestational period.
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Affiliation(s)
- Juneo Freitas Silva
- Departamento de Clínica e Cirurgia VeterináriaEscola de Veterinária, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Natália Melo Ocarino
- Departamento de Clínica e Cirurgia VeterináriaEscola de Veterinária, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Rogéria Serakides
- Departamento de Clínica e Cirurgia VeterináriaEscola de Veterinária, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil
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Lesseur C, Armstrong DA, Paquette AG, Koestler DC, Padbury JF, Marsit CJ. Tissue-specific Leptin promoter DNA methylation is associated with maternal and infant perinatal factors. Mol Cell Endocrinol 2013; 381:160-7. [PMID: 23911897 PMCID: PMC3795868 DOI: 10.1016/j.mce.2013.07.024] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 07/19/2013] [Accepted: 07/19/2013] [Indexed: 10/26/2022]
Abstract
Leptin a regulator of body weight is involved in reproductive and developmental functions. Leptin promoter DNA methylation (LEP) regulates gene expression in a tissue-specific manner and has been linked to adverse pregnancy outcomes. In non-pathologic human pregnancies, we assessed LEP methylation, genotyped the single nucleotide polymorphism (SNP) rs2167270 in placental (n=81), maternal and cord blood samples (n=60), and examined the association between methylation, genotype, and perinatal factors. Maternal blood LEP methylation was lower in pre-pregnancy obese women (P=0.01). Cord blood LEP methylation was higher in small for gestational age (SGA) (P=4.6×10(-3)) and A/A genotype (P=1.6×10(-4)), lower (-1.47, P=0.03) in infants born to pre-pregnancy obese mothers and correlated (P=0.01) with maternal blood LEP. Gender was associated with placental LEP methylation (P=0.05). These results suggest that LEP epigenetic control may be influenced by perinatal factors including: maternal obesity, infant growth, genotype and gender in a tissue-specific manner and may have multigenerational implications.
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Affiliation(s)
- Corina Lesseur
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA
| | - David A. Armstrong
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA
| | - Alison G. Paquette
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA
| | - Devin C. Koestler
- Department of Community and Family Medicine, Section of Biostatistics and Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Drive, 7927 Rubin Building, Lebanon, NH 03756, USA
| | - James F. Padbury
- Department of Pediatrics, Women & infants Hospital of RI, Brown University, Box G-WIH, Providence, RI 02905, USA
| | - Carmen J. Marsit
- Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, 7650 Remsen, Hanover, NH 03755, USA
- Department of Community and Family Medicine, Section of Biostatistics and Epidemiology, Geisel School of Medicine at Dartmouth, 1 Medical Center Drive, 7927 Rubin Building, Lebanon, NH 03756, USA
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Brennan JC, Denison MS, Holstege DM, Magiatis P, Dallas JL, Gutierrez EG, Soshilov AA, Millam JR. 2,3-cis-2R,3R-(-)-epiafzelechin-3-O-p-coumarate, a novel flavan-3-ol isolated from Fallopia convolvulus seed, is an estrogen receptor agonist in human cell lines. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:133. [PMID: 23768005 PMCID: PMC3695784 DOI: 10.1186/1472-6882-13-133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 05/22/2013] [Indexed: 02/08/2023]
Abstract
Background The plant genus Fallopia is well-known in Chinese traditional medicine and includes many species that contain bioactive compounds, namely phytoestrogens. Consumption of phytoestrogens may be linked to decreased incidence of breast and prostate cancers therefore discovery of novel phytoestrogens and novel sources of phytoestrogens is of interest. Although phytoestrogen content has been analyzed in the rhizomes of various Fallopia sp., seeds of a Fallopia sp. have never been examined for phytoestrogen presence. Methods Analytical chemistry techniques were used with guidance from an in vitro estrogen receptor bioassay (a stably transfected human ovarian carcinoma cell line) to isolate and identify estrogenic components from seeds of Fallopia convolvulus. A transiently transfected human breast carcinoma cell line was used to characterize the biological activity of the isolated compounds on estrogen receptors (ER) α and β. Results Two compounds, emodin and the novel flavan-3-ol, (−)-epiafzelechin-3-O-p-coumarate (rhodoeosein), were identified to be responsible for estrogenic activity of F. convolvulus seed extract. Absolute stereochemistry of rhodoeosein was determined by 1 and 2D NMR, optical rotation and circular dichroism. Emodin was identified by HPLC/DAD, LC/MS/MS, and FT/ICR-MS. When characterizing the ER specificity in biological activity of rhodoeosein and emodin, rhodoeosein was able to exhibit a four-fold greater relative estrogenic potency (REP) in breast cells transiently-transfected with ERβ as compared to those transfected with ERα, and emodin exhibited a six-fold greater REP in ERβ-transfected breast cells. Cell type-specific differences were observed with rhodoeosein but not emodin; rhodoeosein produced superinduction of reporter gene activity in the human ovarian cell line (> 400% of maximum estradiol [E2] induction) but not in the breast cell line. Conclusion This study is the first to characterize the novel flavan-3-ol compound, rhodoeosein, and its ability to induce estrogenic activity in human cell lines. Rhodoeosein and emodin may have potential therapeutic applications as natural products activating ERβ, and further characterization of rhodoeosein is necessary to evaluate its selectivity as a cell type-specific ER agonist.
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Maymó JL, Pérez Pérez A, Maskin B, Dueñas JL, Calvo JC, Sánchez Margalet V, Varone CL. The alternative Epac/cAMP pathway and the MAPK pathway mediate hCG induction of leptin in placental cells. PLoS One 2012; 7:e46216. [PMID: 23056265 PMCID: PMC3462743 DOI: 10.1371/journal.pone.0046216] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 08/29/2012] [Indexed: 12/21/2022] Open
Abstract
Pleiotropic effects of leptin have been identified in reproduction and pregnancy, particularly in the placenta, where it works as an autocrine hormone. In this work, we demonstrated that human chorionic gonadotropin (hCG) added to JEG-3 cell line or to placental explants induces endogenous leptin expression. We also found that hCG increased cAMP intracellular levels in BeWo cells in a dose-dependent manner, stimulated cAMP response element (CRE) activity and the cotransfection with an expression plasmid of a dominant negative mutant of CREB caused a significant inhibition of hCG stimulation of leptin promoter activity. These results demonstrate that hCG indeed activates cAMP/PKA pathway, and that this pathway is involved in leptin expression. Nevertheless, we found leptin induction by hCG is dependent on cAMP levels. Treatment with (Bu)2cAMP in combination with low and non stimulatory hCG concentrations led to an increase in leptin expression, whereas stimulatory concentrations showed the opposite effect. We found that specific PKA inhibition by H89 caused a significant increase of hCG leptin induction, suggesting that probably high cAMP levels might inhibit hCG effect. It was found that hCG enhancement of leptin mRNA expression involved the MAPK pathway. In this work, we demonstrated that hCG leptin induction through the MAPK signaling pathway is inhibited by PKA. We observed that ERK1/2 phosphorylation increased when hCG treatment was combined with H89. In view of these results, the involvement of the alternative cAMP/Epac signaling pathway was studied. We observed that a cAMP analogue that specifically activates Epac (CPT-OMe) stimulated leptin expression by hCG. In addition, the overexpression of Epac and Rap1 proteins increased leptin promoter activity and enhanced hCG. In conclusion, we provide evidence suggesting that hCG induction of leptin gene expression in placenta is mediated not only by activation of the MAPK signaling pathway but also by the alternative cAMP/Epac signaling pathway.
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Affiliation(s)
- Julieta Lorena Maymó
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Antonio Pérez Pérez
- Departamento de Bioquímica Médica y Biología Molecular. Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, España
| | - Bernardo Maskin
- Hospital Nacional Profesor Alejandro Posadas, Buenos Aires, Argentina
| | - José Luis Dueñas
- Servicio de Ginecología y Obstetricia, Hospital Universitario Virgen Macarena, Sevilla, España
| | - Juan Carlos Calvo
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Biología y Medicina Experimental (IBYME), Buenos Aires, Argentina
| | - Víctor Sánchez Margalet
- Departamento de Bioquímica Médica y Biología Molecular. Hospital Universitario Virgen Macarena, Facultad de Medicina, Universidad de Sevilla, Sevilla, España
| | - Cecilia Laura Varone
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- * E-mail:
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Liu ZK, Liu HY, Fang WN, Yang Y, Wang HM, Peng JP. Insulin-like growth factor binding protein 7 modulates estrogen-induced trophoblast proliferation and invasion in HTR-8 and JEG-3 cells. Cell Biochem Biophys 2012; 63:73-84. [PMID: 22383111 DOI: 10.1007/s12013-012-9342-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Previous research has reported that IGFBP7 functions as a tumor suppressor gene in different tumors, but its role in the trophoblast has not been elucidated. In this research, we studied the regulation mechanism of IGFBP7 in trophoblast proliferation and invasion in HTR-8 and JEG-3 cell lines. We found that IGFBP7 was abundantly expressed in normal human syncytiotrophoblast tissue samples but that this was lacking in hydatidiform moles. The proliferation and invasion capacities of HTR-8 and JEG-3 cells were significantly inhibited by recombinant IGFBP7. Estrogen (E2) stimulated the expression of IGFBP7 at a concentration of 5-10 ng/mL. This stimulation was inhibited by the estrogen receptor antagonist Fulvestrant (ICI182.780) and a TGFβ-neutralizing antibody. In conclusion, our data reveals that estrogen stimulates the expression of IGFBP7 through estrogen receptors and TGFβ. The expression of IGFBP7 could be stimulated by TGFβ in a dose-dependent manner and inhibited by IFNγ in HTR-8 and JEG-3 cells. IGFBP7 could also inhibit the phosphorylation of ERK and the expression of PCNA, MMP2 and MMP9 in HTR-8 and JEG-3 cells. These findings suggest that IGFBP7 is a key regulator of E2-induced trophoblast proliferation and invasion.
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Affiliation(s)
- Zhen-Kun Liu
- State Key Laboratory of Reproductive Biology, Institute of Zoology of Chinese Academy of Sciences, Chaoyang District, Beijing, People's Republic of China
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Elias CF, Purohit D. Leptin signaling and circuits in puberty and fertility. Cell Mol Life Sci 2012; 70:841-62. [PMID: 22851226 PMCID: PMC3568469 DOI: 10.1007/s00018-012-1095-1] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 07/05/2012] [Accepted: 07/09/2012] [Indexed: 12/22/2022]
Abstract
Leptin is an adipocyte-derived hormone involved in a myriad of physiological process, including the control of energy balance and several neuroendocrine axes. Leptin-deficient mice and humans are obese, diabetic, and display a series of neuroendocrine and autonomic abnormalities. These individuals are infertile due to a lack of appropriate pubertal development and inadequate synthesis and secretion of gonadotropins and gonadal steroids. Leptin receptors are expressed in many organs and tissues, including those related to the control of reproductive physiology (e.g., the hypothalamus, pituitary gland, and gonads). In the last decade, it has become clear that leptin receptors located in the brain are major players in most leptin actions, including reproduction. Moreover, the recent development of molecular techniques for brain mapping and the use of genetically modified mouse models have generated crucial new findings for understanding leptin physiology and the metabolic influences on reproductive health. In the present review, we will highlight the new advances in the field, discuss the apparent contradictions, and underline the relevance of this complex physiological system to human health. We will focus our review on the hypothalamic circuitry and potential signaling pathways relevant to leptin’s effects in reproductive control, which have been identified with the use of cutting-edge technologies of molecular mapping and conditional knockouts.
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Affiliation(s)
- Carol F Elias
- Division of Hypothalamic Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Y6-220B, Dallas, TX, 75390-9077, USA.
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Effect of atypical antipsychotics on fetal growth: is the placenta involved? J Pregnancy 2012; 2012:315203. [PMID: 22848828 PMCID: PMC3401548 DOI: 10.1155/2012/315203] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 06/18/2012] [Indexed: 01/08/2023] Open
Abstract
There is currently considerable uncertainty regarding prescribing practices for pregnant women with severe and persistent psychiatric disorders. The physician and the mother have to balance the risks of untreated psychiatric illness against the potential fetal toxicity associated with pharmacological exposure. This is especially true for women taking atypical antipsychotics. Although these drugs have limited evidence for teratological risk, there are reports of altered fetal growth, both increased and decreased, with maternal atypical antipsychotic use. These effects may be mediated through changes in the maternal metabolism which in turn impacts placental function. However, the presence of receptors targeted by atypical antipsychotics in cell lineages present in the placenta suggests that these drugs can also have direct effects on placental function and development. The signaling pathways involved in linking the effects of atypical antipsychotics to placental dysfunction, ultimately resulting in altered fetal growth, remain elusive. This paper focuses on some possible pathways which may link atypical antipsychotics to placental dysfunction.
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