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Acir IH, Guenther K. Endocrine-disrupting metabolites of alkylphenol ethoxylates - A critical review of analytical methods, environmental occurrences, toxicity, and regulation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 635:1530-1546. [PMID: 29874777 DOI: 10.1016/j.scitotenv.2018.04.079] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 05/07/2023]
Abstract
Despite the fact that metabolites of alkylphenol ethoxylates (APEO) are classified as hazardous substances, they continue to be released into the environment from a variety of sources and are not usually monitored. Their wide use has led to an increase in the possible exposure pathways for humans, which is cause for alarm. Moreover, there is a lack of knowledge about the behaviour of these metabolites with respect to the environment and toxicity, and their biological effects on human health. The aim of this work is to give an overview of the APEO metabolites and their analysis, occurrences and toxicity in various environmental and human samples. APEO metabolites have adverse effects on humans, wildlife, and the environment through their release into the environment. Currently, there are some reviews available on the behaviour of alkylphenols in soil, sediments, groundwater, surface water and food. However, none of these articles consider their toxicity in humans and especially their effect on the nervous and immune system. This work summarises the environmental occurrences of metabolites of APEOs in matrices, e.g. water, food and biological matrices, their effect on the immune and nervous systems, and isomer-specific issues. With that emphasis we are able to cover most common occurrences of human exposure, whether direct or indirect.
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Affiliation(s)
- Ismail-H Acir
- University of Bonn, Institute of Nutrition and Food Sciences, Food Chemistry, Endenicher Allee 11-13, D-53115 Bonn, Germany
| | - Klaus Guenther
- University of Bonn, Institute of Nutrition and Food Sciences, Food Chemistry, Endenicher Allee 11-13, D-53115 Bonn, Germany.
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Protein kinases orchestrate cell cycle regulators in differentiating BeWo choriocarcinoma cells. Mol Cell Biochem 2018; 452:1-15. [PMID: 30051305 DOI: 10.1007/s11010-018-3407-8] [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: 03/12/2018] [Accepted: 07/13/2018] [Indexed: 01/17/2023]
Abstract
Choriocarcinoma, a trophoblastic neoplasia, occurs in women as an incidence of abnormal pregnancy. BeWo choriocarcinoma cells derived from the abnormal placentation are a suitable model system to study the factors associated with differentiation, invasion and other cellular events as an alternative to clinical samples. Many protein kinases orchestrate the complex events of cell cycle and in case of malignancy such regulators are found to be mutated. In the present study, BeWo cells treated with forskolin (Fo) and phorbol 12-myristate 13-acetate (PMA) were used to study the role of PKA (protein kinase A) and PKC (protein kinase C), respectively, on the expression pattern of differentiation-related genes, membrane markers, PKC isoforms and cell cycle regulators. The effect of Fo and PMA on the cell proliferation was assessed. Progressive induction of alkaline phosphatase level and formation of multinucleated differentiated cells were observed in the cells treated with Fo. Exposure of cells to Fo and PMA induced the mRNA transcripts of α-hCG, β-hCG and endoglin and down-regulates E-cadherin at mRNA and protein levels. Synergistic levels of both up- and down-regulated genes/proteins were observed when cells were treated with the combination of Fo and PMA. The mRNA levels of cyclin D1, cyclin E1, p21, Rb, p53, caspase-3 and caspase-8 decreased gradually during differentiation. Fo significantly inhibited the protein levels of PCNA, Rb, PKC-α and PMA stimulated mRNA expression of PKC-ε and PKC-δ. Further, failure in the activation of essential components of the cell cycle machinery caused G2/M phase arrest in differentiating BeWo cells.
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Selesniemi K, Albers RE, Brown TL. Id2 Mediates Differentiation of Labyrinthine Placental Progenitor Cell Line, SM10. Stem Cells Dev 2016; 25:959-74. [PMID: 27168216 PMCID: PMC4931356 DOI: 10.1089/scd.2016.0010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/17/2016] [Indexed: 11/12/2022] Open
Abstract
The placenta is an organ that is formed transiently during pregnancy, and appropriate placental development is necessary for fetal survival and growth. Proper differentiation of the labyrinthine layer of the placenta is especially crucial, as it establishes the fetal-maternal interface that is involved in physiological exchange processes. Although previous studies have indicated the importance of inhibitor of differentiation/inhibitor of DNA binding-2 (Id2) helix-loop-helix transcriptional regulator in mediating cell differentiation, the ability of Id2 to regulate differentiation toward the labyrinthine (transport) lineage of the placenta has yet to be determined. In the current study, we have generated labyrinthine trophoblast progenitor cells with increased (SM10-Id2) or decreased (SM10-Id2-shRNA) Id2 expression and determined the effect on TGF-β-induced differentiation. Our Id2 overexpression and knockdown analyses indicate that Id2 mediates TGF-β-induced morphological differentiation of labyrinthine trophoblast cells, as Id2 overexpression prevents differentiation and Id2 knockdown results in differentiation. Thus, our data indicate that Id2 is an important molecular mediator of labyrinthine trophoblast differentiation. An understanding of the regulators of trophoblast progenitor differentiation toward the labyrinthine lineage may offer insights into events governing pregnancy-associated disorders, such as placental insufficiency, fetal growth restriction, and preeclampsia.
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Affiliation(s)
- Kaisa Selesniemi
- Department of Neuroscience, Cell Biology, and Physiology, Wright State University Boonshoft School of Medicine , Dayton, Ohio
| | - Renee E Albers
- Department of Neuroscience, Cell Biology, and Physiology, Wright State University Boonshoft School of Medicine , Dayton, Ohio
| | - Thomas L Brown
- Department of Neuroscience, Cell Biology, and Physiology, Wright State University Boonshoft School of Medicine , Dayton, Ohio
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Rasoulzadeh Z, Ghods R, Kazemi T, Mirzadegan E, Ghaffari-Tabrizi-Wizsy N, Rezania S, Kazemnejad S, Arefi S, Ghasemi J, Vafaei S, Mahmoudi AR, Zarnani AH. Placental Kisspeptins Differentially Modulate Vital Parameters of Estrogen Receptor-Positive and -Negative Breast Cancer Cells. PLoS One 2016; 11:e0153684. [PMID: 27101408 PMCID: PMC4839747 DOI: 10.1371/journal.pone.0153684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 04/01/2016] [Indexed: 11/28/2022] Open
Abstract
Kisspeptins (KPs) are major regulators of trophoblast and cancer invasion. Thus far, limited and conflicting data are available on KP-mediated modulation of breast cancer (BC) metastasis; mostly based on synthetic KP-10, the most active fragment of KP. Here, we report for the first time comprehensive functional effects of term placental KPs on proliferation, adhesion, Matrigel invasion, motility, MMP activity and pro-inflammatory cytokine production in MDA-MB-231 (estrogen receptor-negative) and MCF-7 (estrogen receptor-positive). KPs were expressed at high level by term placental syncytiotrophoblasts and released in soluble form. Placental explant conditioned medium containing KPs (CM) significantly reduced proliferation of both cell types compared to CM without (w/o) KP (CM-w/o KP) in a dose- and time-dependent manner. In MDA-MB-231 cells, placental KPs significantly reduced adhesive properties, while increased MMP9 and MMP2 activity and stimulated invasion. Increased invasiveness of MDA-MB-231 cells after CM treatment was inhibited by KP receptor antagonist, P-234. CM significantly reduced motility of MCF-7 cells at all time points (2–30 hr), while it stimulated motility of MDA-MB-231 cells. These effects were reversed by P-234. Co-treatment with selective ER modulators, Tamoxifen and Raloxifene, inhibited the effect of CM on motility of MCF-7 cells. The level of IL-6 in supernatant of MCF-7 cells treated with CM was higher compared to those treated with CM-w/o KP. Both cell types produced more IL-8 after treatment with CM compared to those treated with CM-w/o KP. Taken together, our observations suggest that placental KPs differentially modulate vital parameters of estrogen receptor-positive and -negative BC cells possibly through modulation of pro-inflammatory cytokine production.
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Affiliation(s)
- Zahra Rasoulzadeh
- Department of Immunology, Tabriz University of Medical Sciences, Tabriz, 5165683146, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, 5165683146, Iran
| | - Roya Ghods
- Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, IUMS, Tehran, 1449614535, Iran
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, 1449614535, Iran
| | - Tohid Kazemi
- Department of Immunology, Tabriz University of Medical Sciences, Tabriz, 5165683146, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, 5165683146, Iran
- * E-mail: (AHZ); (TK)
| | - Ebrahim Mirzadegan
- Immunobiology Research Center, Avicenna Research Institute, ACECR, Tehran, 1177–19615, Iran
| | | | - Simin Rezania
- Institute of Biophysics, Medical University of Graz, Graz, 8010, Austria
| | - Somaieh Kazemnejad
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1177–19615, Iran
| | - Soheila Arefi
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1177–19615, Iran
| | - Jamileh Ghasemi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1177–19615, Iran
| | - Sedigheh Vafaei
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1177–19615, Iran
| | - Ahmad-Reza Mahmoudi
- Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, 1177–19615, Iran
| | - Amir-Hassan Zarnani
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1177–19615, Iran
- Immunology Research Center, Iran University of Medical Sciences, Tehran, 81746–73461, Iran
- * E-mail: (AHZ); (TK)
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Cleys ER, Halleran JL, Enriquez VA, da Silveira JC, West RC, Winger QA, Anthony RV, Bruemmer JE, Clay CM, Bouma GJ. Androgen receptor and histone lysine demethylases in ovine placenta. PLoS One 2015; 10:e0117472. [PMID: 25675430 PMCID: PMC4326353 DOI: 10.1371/journal.pone.0117472] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 12/24/2014] [Indexed: 02/05/2023] Open
Abstract
Sex steroid hormones regulate developmental programming in many tissues, including programming gene expression during prenatal development. While estradiol is known to regulate placentation, little is known about the role of testosterone and androgen signaling in placental development despite the fact that testosterone rises in maternal circulation during pregnancy and in placenta-induced pregnancy disorders. We investigated the role of testosterone in placental gene expression, and focused on androgen receptor (AR). Prenatal androgenization decreased global DNA methylation in gestational day 90 placentomes, and increased placental expression of AR as well as genes involved in epigenetic regulation, angiogenesis, and growth. As AR complexes with histone lysine demethylases (KDMs) to regulate AR target genes in human cancers, we also investigated if the same mechanism is present in the ovine placenta. AR co-immunoprecipitated with KDM1A and KDM4D in sheep placentomes, and AR-KDM1A complexes were recruited to a half-site for androgen response element (ARE) in the promoter region of VEGFA. Androgenized ewes also had increased cotyledonary VEGFA. Finally, in human first trimester placental samples KDM1A and KDM4D immunolocalized to the syncytiotrophoblast, with nuclear KDM1A and KDM4D immunostaining also present in the villous stroma. In conclusion, placental androgen signaling, possibly through AR-KDM complex recruitment to AREs, regulates placental VEGFA expression. AR and KDMs are also present in first trimester human placenta. Androgens appear to be an important regulator of trophoblast differentiation and placental development, and aberrant androgen signaling may contribute to the development of placental disorders.
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Affiliation(s)
- Ellane R. Cleys
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Jennifer L. Halleran
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Vanessa A. Enriquez
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Juliano C. da Silveira
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Rachel C. West
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Quinton A. Winger
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Russell V. Anthony
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Jason E. Bruemmer
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
- Department of Animal Sciences, Colorado State University, Fort Collins, Colorado, United States of America
| | - Colin M. Clay
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
| | - Gerrit J. Bouma
- Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado, United States of America
- * E-mail:
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Dumitrescu A, Aberdeen GW, Pepe GJ, Albrecht ED. Placental estrogen suppresses cyclin D1 expression in the nonhuman primate fetal adrenal cortex. Endocrinology 2014; 155:4774-84. [PMID: 25247468 PMCID: PMC4239423 DOI: 10.1210/en.2014-1221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We have previously shown that estrogen selectively suppresses growth of the fetal zone of the baboon fetal adrenal cortex, which produces the C19-steroid precursors, eg, dehydroepiandrosterone sulfate, which are aromatized to estrogen within the placenta. In the present study, we determined whether fetal adrenal expression of cell cycle regulators are altered by estrogen and thus provide a mechanism by which estrogen regulates fetal adrenocortical development. Cyclin D1 mRNA levels in the whole fetal adrenal were increased 50% (P < .05), and the number of cells in the fetal adrenal definitive zone expressing cyclin D1 protein was increased 2.5-fold (P < .05), whereas the total number of cells in the fetal zone and fetal serum dehydroepiandrosterone sulfate levels were elevated 2-fold (P < .05) near term in baboons in which fetal serum estradiol levels were decreased by 95% (P < .05) after maternal administration of the aromatase inhibitor letrozole and restored to normal by concomitant administration of letrozole plus estradiol throughout second half of gestation. However, fetal adrenocortical expression of cyclin D2, the cyclin-dependent kinase (Cdk)-2, Cdk4, and Cdk6, and Cdk regulatory proteins p27(Kip1) and p57(Kip2) were not changed by letrozole or letrozole plus estradiol administration. We suggest that estrogen controls the growth of the fetal zone of the fetal adrenal by down-regulating cyclin D1 expression and thus proliferation of progenitor cells within the definitive zone that migrate to the fetal zone. We propose that estrogen restrains growth and function of the fetal zone via cyclin D1 to maintain estrogen levels in a physiological range during primate pregnancy.
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Affiliation(s)
- Adina Dumitrescu
- Department of Obstetrics, Gynecology, and Reproductive Sciences (G.W.A., E.D.A.), Center for Studies in Reproduction, University of Maryland School of Medicine, Baltimore, Maryland 21201; and Departments of Obstetrics and Gynecology and Physiological Sciences (A.D., G.J.P.), Eastern Virginia Medical School, Norfolk, Virginia 23507
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Chai J, Ho PC. A pilot study on the combined use of letrozole, mifepristone and misoprostol in termination of first trimester pregnancy up to 9 weeks’ gestation. Eur J Obstet Gynecol Reprod Biol 2013; 171:291-4. [DOI: 10.1016/j.ejogrb.2013.09.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 08/20/2013] [Accepted: 09/16/2013] [Indexed: 11/30/2022]
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Govindaraj V, Arya SV, Rao AJ. Differential action of glycoprotein hormones: significance in cancer progression. Discov Oncol 2013; 5:1-10. [PMID: 24129797 DOI: 10.1007/s12672-013-0164-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 10/02/2013] [Indexed: 01/16/2023] Open
Abstract
Growth of multicellular organisms depends on maintenance of proper balance between proliferation and differentiation. Any disturbance in this balance in animal cells can lead to cancer. Experimental evidence is provided to conclude with special reference to the action of follicle-stimulating hormone (FSH) on Sertoli cells, and luteinizing hormone (LH) on Leydig cells that these hormones exert a differential action on their target cells, i.e., stimulate proliferation when the cells are in an undifferentiated state which is the situation with cancer cells and promote only functional parameters when the cell are fully differentiated. Hormones and growth factors play a key role in cell proliferation, differentiation, and apoptosis. There is a growing body of evidence that various tumors express some hormones at high levels as well as their cognate receptors indicating the possibility of a role in progression of cancer. Hormones such as LH, FSH, and thyroid-stimulating hormone have been reported to stimulate cell proliferation and act as tumor promoter in a variety of hormone-dependent cancers including gonads, lung, thyroid, uterus, breast, prostate, etc. This review summarizes evidence to conclude that these hormones are produced by some cancer tissues to promote their own growth. Also an attempt is made to explain the significance of the differential action of hormones in progression of cancer with special reference to prostate cancer.
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17-β-Estradiol counteracts the effects of high frequency electromagnetic fields on trophoblastic connexins and integrins. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:280850. [PMID: 23819010 PMCID: PMC3683487 DOI: 10.1155/2013/280850] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 05/11/2013] [Indexed: 01/17/2023]
Abstract
We investigated the effect of high-frequency electromagnetic fields (HF-EMFs) and 17-β-estradiol on connexins (Cxs), integrins (Ints), and estrogen receptor (ER) expression, as well as on ultrastructure of trophoblast-derived HTR-8/SVneo cells. HF-EMF, 17-β-estradiol, and their combination induced an increase of Cx40 and Cx43 mRNA expression. HF-EMF decreased Int alpha1 and β1 mRNA levels but enhanced Int alpha5 mRNA expression. All the Ints mRNA expressions were increased by 17-β-estradiol and exposure to both stimuli. ER-β mRNA was reduced by HF-EMF but augmented by 17-β-estradiol alone or with HF-EMF. ER-β immunofluorescence showed a cytoplasmic localization in sham and HF-EMF exposed cells which became nuclear after treatment with hormone or both stimuli. Electron microscopy evidenced a loss of cellular contact in exposed cells which appeared counteracted by 17-β-estradiol. We demonstrate that 17-β-estradiol modulates Cxs and Ints as well as ER-β expression induced by HF-EMF, suggesting an influence of both stimuli on trophoblast differentiation and migration.
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Yeung TWY, Lee VCY, Ng EHY, Ho PC. A pilot study on the use of a 7-day course of letrozole followed by misoprostol for the termination of early pregnancy up to 63 days. Contraception 2012; 86:763-9. [DOI: 10.1016/j.contraception.2012.05.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Revised: 04/25/2012] [Accepted: 05/11/2012] [Indexed: 11/30/2022]
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Chen JZJ, Sheehan PM, Brennecke SP, Keogh RJ. Vessel remodelling, pregnancy hormones and extravillous trophoblast function. Mol Cell Endocrinol 2012; 349:138-44. [PMID: 22051447 DOI: 10.1016/j.mce.2011.10.014] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Accepted: 10/14/2011] [Indexed: 01/09/2023]
Abstract
During early human pregnancy, extravillous trophoblast (EVT) cells from the placenta invade the uterine decidual spiral arterioles and mediate the remodelling of these vessels such that a low pressure, high blood flow can be supplied to the placenta. This is essential to facilitate normal growth and development of the foetus. Defects in remodelling can manifest as the serious pregnancy complication pre-eclampsia. During the period of vessel remodelling three key pregnancy-associated hormones, human chorionic gonadotrophin (hCG), progesterone (P(4)) and oestradiol (E(2)), are found in high concentrations at the maternal-foetal interface. Potentially these hormones may control EVT movement and thus act as regulators of vessel remodelling. This review will discuss what is known about how these hormones affect EVT proliferation, migration and invasion during vascular remodelling and the potential relationship between hCG, P(4), E(2) and the development of pre-eclampsia.
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Affiliation(s)
- Jessie Z-J Chen
- Department of Perinatal Medicine Pregnancy Research Centre and University of Melbourne Department of Obstetrics and Gynaecology, Royal Women's Hospital, Parkville, 3052 Victoria, Australia
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Gambino Y, Maymó J, Pérez Pérez A, Calvo J, Sánchez-Margalet V, Varone C. Elsevier Trophoblast Research Award Lecture: Molecular mechanisms underlying estrogen functions in trophoblastic cells − Focus on leptin expression. Placenta 2012; 33 Suppl:S63-70. [DOI: 10.1016/j.placenta.2011.12.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 12/01/2011] [Accepted: 12/05/2011] [Indexed: 01/19/2023]
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Effects of valproic acid (VPA) and levetiracetam (LEV) on proliferation, apoptosis and hormone secretion of the human choriocarcinoma BeWo cell line. Pharmacol Rep 2011; 63:1195-202. [DOI: 10.1016/s1734-1140(11)70639-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Revised: 06/16/2011] [Indexed: 01/14/2023]
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Nielsen JK, Vikström AC, Turner P, Knudsen LE. Deoxynivalenol transport across the human placental barrier. Food Chem Toxicol 2011; 49:2046-52. [DOI: 10.1016/j.fct.2011.05.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 04/28/2011] [Accepted: 05/16/2011] [Indexed: 01/26/2023]
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Association of kisspeptin-10 levels with abortus imminens: a preliminary study. Arch Gynecol Obstet 2011; 285:649-53. [PMID: 21847585 DOI: 10.1007/s00404-011-2061-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Accepted: 08/02/2011] [Indexed: 10/17/2022]
Abstract
PURPOSE To investigate the association between kisspeptin 10 (Kp-10) levels and early pregnancy bleeding and perinatal outcome. METHODS A total of 20 pregnant women with the complaint of vaginal bleeding during 7-18 gestational weeks and 20 healthy gestational week matched pregnant women were included in the study. Maternal plasma Kp-10 levels were measured with the enzyme immunoassay method. Adverse pregnancy outcomes like intrauterine growth restriction, preterm delivery, preeclampsia and low birth weight were evaluated in both groups. RESULTS Maternal plasma Kp-10 levels (p = 0.01) and birth weight (p = 0.06) were found to be lower in women with bleeding. Intrauterine growth restriction, preterm delivery and intrauterine exitus were noted more commonly in women with bleeding (10 vs. 0%, 25 vs. 15% and 20 vs. 0%, p = 0.08). Preeclampsia were developed in 5% of both groups. Kp-10 levels showed positive correlation with gestational week (p = 0.02) and ALT levels (p = 0.02). CONCLUSION [corrected] Kp-10 levels were found lower in women with early pregnancy bleeding.
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Haouzi D, Dechaud H, Assou S, Monzo C, de Vos J, Hamamah S. Transcriptome analysis reveals dialogues between human trophectoderm and endometrial cells during the implantation period. Hum Reprod 2011; 26:1440-9. [DOI: 10.1093/humrep/der075] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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17
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Blomberg LA, Schreier L, Li RW. Characteristics of peri-implantation porcine concepti population and maternal milieu influence the transcriptome profile. Mol Reprod Dev 2011; 77:978-89. [PMID: 21104768 DOI: 10.1002/mrd.21253] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Asynchrony of trophectoderm elongation, gestational days 11-12, is evident in porcine concepti, and rapid progression through this phase has been associated with conceptus competency. The goal of the current study was to determine the extent of transcriptomic responses of concepti to developmental delay and their physiological implications. Gestational day 11 concepti with the same morphology, ovoid and 7-8 mm, were isolated and designated as control or developmentally delayed if collected from a homogenous ovoid conceptus population or heterogeneous conceptus population (ovoid to filamentous), respectively. Total RNA prepared from four distinct control and four distinct developmentally delayed concepti, was analyzed using an Agilent high-density custom porcine microarray. Two hundred nine transcripts were found differentially expressed between normal and developmentally delayed concepti. Functional analysis of these genes indicated that a significant number of the genes regulate signal transduction/transcription, organismal development, metabolism, and cell adhesion and can be modulated by transforming growth factor β1 (TGFβ1). Ten genes were selected for real-time PCR validation of differential expression based on a known role in steroid synthesis, endometrium receptivity, and modulation of trophoblast differentiation/growth or interaction with TGFβ1. As in the microarray, all except one, achaete-scute complex homolog 2, were preferentially up-regulated in delayed concepti. Overall, findings suggested that despite similar morphology, the transcriptome of developmentally delayed concepti is distinct from control counterparts. Also highlighted were ways by which the conceptus' microenvironment might be affected and developmental factors that may be of interest to interrogate further to determine if, and how, they affect embryo competency/elongation.
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Tug N, Uslu U, Cumbul A, Eyuboglu S, Cam C, Karateke A, Yilmaz B. Effects of the gonadotropin-releasing hormone antagonist cetrorelix in the early postimplantation period on rat pregnancy. Eur J Obstet Gynecol Reprod Biol 2011; 155:166-70. [PMID: 21242023 DOI: 10.1016/j.ejogrb.2010.12.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 10/19/2010] [Accepted: 12/15/2010] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The effect of cetrorelix given in the early implantation period on rat pregnancy was investigated. STUDY DESIGN Forty-nine virgin Sprague-Dawley rats were randomized into six groups. At the 4th or 8th days of sperm plug, groups received 15, 75, 150 μg/kg cetrorelix or saline. Three subjects were randomly selected from each group and sacrificed at 11th gestational day for histomorphometric analysis. The remaining subjects were allowed to complete their pregnancy period. Volumes of total conceptus, labyrinth zone, transitional zone, giant cell zone, and exocoelomic cavity were calculated according to Cavalieri's principle. RESULTS Subjects receiving cetrorelix at 15 or 150 μg doses at the 4th day (D4) and those receiving cetrorelix at 150 μg dose at the 8th day (D8) of pregnancy delivered later than the controls. On necropsy examination at the 11th day, mean embryo weights of the cetrorelix 15 D4, 150 D4, 15 D8 and 75 D8 groups were found to be significantly lower than that of the controls (p<0.05). On histomorphometric evaluation, volumes of the fetuses and the amniotic sacs were decreased by cetrorelix at all doses studied dose dependently. Gross congenital anomalies were observed in the pups of three rats of the cetrorelix 150 D4 and D8 groups. CONCLUSION The results of this study suggest that cetrorelix in the early post-implantation period may lead to serious side effects in the rat.
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Affiliation(s)
- Niyazi Tug
- Yeditepe University, Faculty of Medicine, Istanbul, Turkey.
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Lee HJ, Snegovskikh VV, Park JS, Foyouzi N, Han KT, Hodgson EJ, Guller S, Norwitz ER. Role of GnRH–GnRH receptor signaling at the maternal-fetal interface. Fertil Steril 2010; 94:2680-7. [DOI: 10.1016/j.fertnstert.2010.03.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 03/06/2010] [Accepted: 03/08/2010] [Indexed: 11/16/2022]
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20
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Bechi N, Ietta F, Romagnoli R, Jantra S, Cencini M, Galassi G, Serchi T, Corsi I, Focardi S, Paulesu L. Environmental levels of para-nonylphenol are able to affect cytokine secretion in human placenta. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:427-31. [PMID: 20194071 PMCID: PMC2854774 DOI: 10.1289/ehp.0900882] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Accepted: 11/23/2009] [Indexed: 05/23/2023]
Abstract
BACKGROUND para-Nonylphenol (p-NP) is a metabolite of alkylphenols widely used in the chemical industry and manufacturing. It accumulates in the environment, where it acts with estrogen-like activity. We previously showed that p-NP acts on human placenta by inducing trophoblast differentiation and apoptosis. OBJECTIVE The aim of the present study was to investigate the effect of p-NP on cytokine secretion in human placenta. METHODS In vitro cultures of chorionic villous explants from human placenta in the first trimester of pregnancy were treated with p-NP (10(13), 10(11), and 10(9) M) in 0.1% ethanol as vehicle. Culture medium was collected after 24 hr and assayed by specific immunoassays for the cytokines granulocyte-macrophage colony-stimulating factor (GM-CSF), interferon-gamma (IFN-gamma), interleukin (IL)-1beta, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, and tumor necrosis factor-alpha (TNF-alpha). RESULTS p-NP modulated cytokine secretion by inducing the release of GM-CSF, IFN-gamma, IL-1beta, IL-4, and IL-10, with a maximum effect at 10(11) M. It reduced the release of TNF-alpha at 10(13) M, whereas levels of IL-2 and IL-5 remained below the detection limit. IL-6 and IL-8 levels were 1001,000 times higher than those of other cytokines, and they were not affected by p-NP. We observed significant differences from controls (ethanol alone) only for GM-CSF and IL-10. CONCLUSION An unbalanced cytokine network at the maternal--fetal interface may result in implantation failure, pregnancy loss, or other complications. The effects of extremely low doses of p-NP on the placental release of cytokines raise considerable concerns about maternal exposure to this endocrine disruptor during pregnancy.
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Affiliation(s)
| | | | | | - Silke Jantra
- Department of Physiology, University of Siena, Siena, Italy
| | - Marco Cencini
- Obstetrics and Gynecology Division, Hospital, Campostaggia, Siena, Italy
| | | | - Tommaso Serchi
- Department of Clinical Medicine and Immunological Sciences, Rheumatology Unit and
| | - Ilaria Corsi
- Department of Environmental Sciences, University of Siena, Siena, Italy
| | - Silvano Focardi
- Department of Environmental Sciences, University of Siena, Siena, Italy
| | - Luana Paulesu
- Department of Physiology, University of Siena, Siena, Italy
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Cheng Y, Hu R, Jin H, Ma K, Zhou S, Cheng H, Ma D, Li X. Effect of 14-3-3 tau protein on differentiation in BeWo choriocarcinoma cells. Placenta 2009; 31:60-6. [PMID: 19906423 DOI: 10.1016/j.placenta.2009.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 09/22/2009] [Accepted: 10/01/2009] [Indexed: 10/20/2022]
Abstract
This study aimed to investigate the location and function of tau isoform of 14-3-3 proteins in human trophoblast. 14-3-3 tau was localized in human cytotrophoblast cells, but not in syncytiotrophoblast cells in both first trimester and term placenta by immunochemistry stain. Forskolin-induced cell fusion (BeWo cells) confirmed that 14-3-3 tau was decreased during trophoblast differentiation. Forskolin-induced differentiation was stimulated by small-interfering (si) RNA induced down-regulation of 14-3-3 tau, contrarily, it was suppressed by plasmid induced upregulation of 14-3-3 tau in BeWo cells. When BeWo cells were treated with 14-3-3 tau siRNA, an increase in protein concentration of cell cycle inhibitor p27kip1 and a decrease in protein concentration of proliferating cell nuclear antigen, as well as activation of the extracellular signal-regulated kinase (ERK) pathway, were also noticed. These findings suggest that 14-3-3 tau might be mediated trophoblast differentiation through cell cycle regulation.
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Affiliation(s)
- Y Cheng
- Obstetrics & Gynecology Hospital, Fudan University, 419 Fangxie Road, Shanghai 200011, China
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22
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Prouillac C, Videmann B, Mazallon M, Lecoeur S. Induction of cells differentiation and ABC transporters expression by a myco-estrogen, zearalenone, in human choriocarcinoma cell line (BeWo). Toxicology 2009; 263:100-7. [DOI: 10.1016/j.tox.2009.06.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Revised: 06/25/2009] [Accepted: 06/26/2009] [Indexed: 01/04/2023]
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Neelima PS, Rao Rekha M, Rama S, Rao AJ. Effect of human telomerase reverse transcriptase transfection on differentiation in BeWo choriocarcinoma cells. Reprod Biomed Online 2009; 18:838-49. [PMID: 19490790 DOI: 10.1016/s1472-6483(10)60035-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Arrest of proliferation is one of the prerequisites for differentiation of cytotrophoblasts into syncytiotrophoblasts, and thus during differentiation telomerase activity, as well as human telomerase reverse transcriptase (hTERT) expression, is down-regulated. Considering this, it is of interest to investigate whether syncytium formation can be delayed by prolonging the expression of telomerase in cytotrophoblasts. BeWo cells were transfected with pLPC-hTERT retroviral vector and the reverse transcription-polymerase chain reaction analysis for hTERT mRNA concentrations in the transfected cells revealed a several-fold increase in hTERT mRNA compared with the cells transfected with empty vector, and this confirmed that the transfection was successful. An increase in the proliferation, as assessed by bromodeoxyuridine incorporation assay, as well as an increase in mRNA and protein concentration of various cyclins and proliferating cell nuclear antigen, was noticed. The effect of hTERT transfection was also assessed after the addition of forskolin to induce differentiation and it was observed that cell-cell fusion was delayed and differentiation did not occur in hTERT-transfected cells. However, the effects seen were only transient as stable transfection was not possible and the cells were undergoing apoptosis after 72 h, which suggested that apart from hTERT other factors might be important for immortalization of BeWo cells.
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Affiliation(s)
- P S Neelima
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
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24
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Pospechova K, Rozehnal V, Stejskalova L, Vrzal R, Pospisilova N, Jamborova G, May K, Siegmund W, Dvorak Z, Nachtigal P, Semecky V, Pavek P. Expression and activity of vitamin D receptor in the human placenta and in choriocarcinoma BeWo and JEG-3 cell lines. Mol Cell Endocrinol 2009; 299:178-87. [PMID: 19133314 DOI: 10.1016/j.mce.2008.12.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 12/04/2008] [Accepted: 12/04/2008] [Indexed: 01/27/2023]
Abstract
Vitamin D receptor (VDR) regulates the expression of many genes involved in mineral metabolism, cellular proliferation, differentiation and drug biotransformation. We studied the expression and activity of VDR and its heterodimerization partner retinoid X receptor-alpha (RXRalpha) in choriocarcinoma trophoblast cell lines BeWo and JEG-3, in comparison with human isolated placental cytotrophoblasts and human full term placenta. We found that VDR and RXRalpha are localised in the human term placenta trophoblast and expressed in isolated cytotrophoblasts. However, we found low expression and no transcriptional activity of VDR in used choriocarcinoma cell lines. The inhibitor of DNA methylation, 5-deoxy-3'-azacytidine, and histone deacetylase inhibitor sodium butyrate partially restored the expression of VDR, suggesting an epigenetic suppression of the gene in choriocarcinoma cells. Differentiation of BeWo cells resulted in up-regulation of VDR mRNA. Finally, we observed a non-genomic effect of 1,25(OH)(2)D(3) in the activation of the extracellular signal-regulated kinase (ERK) signalling pathway in JEG-3 cells. In conclusion, our results suggest an epigenetic repression of VDR gene expression and activity in choriocarcinoma cell lines, and a non-genomic effect of 1,25(OH)(2)D(3) in JEG-3 cells.
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Affiliation(s)
- Katerina Pospechova
- Department of Biological and Medical Science, Charles University in Prague, Faculty of Pharmacy in Hradec Kralove, Heyrovsky, Hradec Kralove, Czech Republic
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25
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Response of the ABCG2 promoter in T47D cells and BeWo cells to sex hormone treatment. Mol Biol Rep 2008; 36:1889-96. [PMID: 18991020 DOI: 10.1007/s11033-008-9395-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2008] [Accepted: 10/17/2008] [Indexed: 10/21/2022]
Abstract
The aim of this study was to elucidate the effects of sex hormones on activity of the ABCG2 promoter in different cell lines. T47D cells and BeWo cells were used as models for ABCG2-expressing cell lines, and luciferase assays using ABCG2 promoter-luciferase constructs were performed. It was shown that progesterone increased the response of the ABCG2 promoter in T47D cells but not in BeWo cells. On the other hand, estradiol had no effect on response of the ABCG2 promoter in either cell line. However, response of the ABCG2 promoter was enhanced by overexpression of ERalpha in both T47D cells and BeWo cells. T47D cells had higher sensitivity to ERalpha than did BeWo cells. Furthermore, it was shown that the inductive effect of progesterone on the ABCG2 promoter was inhibited by addition of RU486 or mithramycin A. Therefore, it was thought that the ABCG2 promoter responded to stimulation of the progesterone receptor (PR)-Sp1 pathway in T47D cells. Furthermore, progesterone suppressed the response of the ABCG2 promoter by changing the expression levels of PR-A and PR-B in BeWo cells. These findings suggested that there are differences between cell lines in the regulation mechanism of ABCG2 expression by sex hormone treatment.
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Hawse J, Subramaniam M, Ingle J, Oursler M, Rajamannan N, Spelsberg T. Estrogen-TGFbeta cross-talk in bone and other cell types: role of TIEG, Runx2, and other transcription factors. J Cell Biochem 2008; 103:383-92. [PMID: 17541956 PMCID: PMC3372922 DOI: 10.1002/jcb.21425] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
It is well established that E(2) and TGFbeta have major biological effects in multiple tissues, including bone. The signaling pathways through which these two factors elicit their effects are well documented. However, the interaction between these two pathways and the potential consequences of cross-talk between E(2) and TGFbeta continue to be elucidated. In this prospectus, we present known and potential roles of TIEG, Runx2, and other transcription factors as important mediators of signaling between these two pathways.
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Affiliation(s)
- J.R. Hawse
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - M. Subramaniam
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - J.N. Ingle
- Department of Oncology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - M.J. Oursler
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
- Endocrine Research Unit, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - N.M. Rajamannan
- Department of Cardiology, Northwestern University Medical School, Chicago, Illinois
| | - T.C. Spelsberg
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
- Correspondence to: T.C. Spelsberg, PhD, Department of Biochemistry and Molecular Biology, 1601 Guggenheim Bldg., Mayo Clinic, 200 First Street SW, Rochester, MN 55905.
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27
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Vandevoort CA, Thirkill TL, Douglas GC. Blastocyst-derived trophoblast stem cells from the rhesus monkey. Stem Cells Dev 2008; 16:779-88. [PMID: 17999599 DOI: 10.1089/scd.2007.0020] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Although trophoblast stem cells can be obtained directly from blastocyst outgrowths in the mouse, this has never been described in primates. In human and non-human primates, trophoblast cells have been obtained from embryonic stem (ES) cells or embryoid bodies (EBs). The results reported here show for the first time that cells with the characteristics of trophoblast stem cells can be derived directly from rhesus monkey blastocyst outgrowths. The cells expressed trophoblast markers and were maintained for multiple passages in the absence of feeder layers or growth factors. The cells could be maintained as adherent, mononuclear cells by regular passaging, but they formed syncytial-like structures if maintained in culture for prolonged periods or if incubated in the presence of 17beta-estradiol. The cells also demonstrated invasive behavior similar to extravillous trophoblasts. The availability of these lines provides a useful experimental system for studying trophoblast differentiation and for developing novel intervention strategies to treat placental dysfunction.
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Affiliation(s)
- Catherine A Vandevoort
- California National Primate Research Center, Department of Obstetrics and Gynecology, School of Medicine, University of California, Davis CA 95616, USA
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28
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Nampoothiri LP, Neelima PS, Rao AJ. Proteomic profiling of forskolin-induced differentiated BeWo cells: an in-vitro model of cytotrophoblast differentiation. Reprod Biomed Online 2007; 14:477-87. [PMID: 17425831 DOI: 10.1016/s1472-6483(10)60896-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Placental trophoblastic differentiation is characterized by the fusion of monolayer cytotrophoblasts into syncytiotrophoblasts. During this process of differentiation, several morphological and biochemical changes are known to occur, and this model has been employed to investigate the changes that occur at the gene and protein level during differentiation. Using the sensitive technique of proteomics [two-dimensional gel electrophoresis (2DGE)], changes in protein profile were evaluated in the control and forskolin-induced differentiated cells of trophoblastic choriocarcinoma BeWo cell line. Several proteins were differentially expressed in control and differentiated cells. Four major proteins were up-regulated as assessed by silver staining, and were further characterized as c-h-ras p 21 (phosphorylated), retinoblastoma susceptibility protein 1 and integrase interactor protein 1. These proteins are known to play an important role in growth arrest of cells, and thus may play a role in initiating the process of differentiation.
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29
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Abstract
The invasion of extravillous trophoblasts into the uterine wall is of crucial importance for placental and fetal development, and its dysregulation has been implicated in a wide spectrum of abnormal pregnancies. Mechanistically, trophoblast invasion strongly resembles the invasion of tumour cells, but differs from it by tight regulation in time and space. This regulation is accomplished by different factors including cytokines and hormones, which are produced by both fetal as well as maternal tissues i.e., placenta and uterus, respectively. Recently, products of the KiSS-1 gene (kisspeptins) have been identified to not only inhibit metastasis in various tumours, but also to repress trophoblast invasion via binding to the G protein-coupled receptor KiSS-1R. In the placenta, expression levels of kisspeptins and their receptor are highest in the first trimester in humans and at day 12.5 in rats, respectively. This coincides with the time when invasiveness peaks and invasion regulation is of central importance. Human kisspeptins are predominantly produced by the syncytiotrophoblast, whereas KiSS-1R is additionally expressed on the invading extravillous trophoblasts indicating a paracrine regulation of extravillous trophoblast invasion by the syncytiotrophoblast. In the structurally different rat placenta both KiSS-1 and its receptor are predominantly expressed by the invasive trophoblast giant cells, thus establishing an autocrine system in the invasion regulation of this trophoblast subpopulation. Amongst all kisspeptins the highly conserved kisspeptin Kp-10 has strongest invasion inhibiting effects suggesting its major role in regulation of trophoblast invasion.
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Affiliation(s)
- Ursula Hiden
- Department of Obstetrics and Gynaecology, Medical University of Graz, Auenbruggerplatz 14, 8036, Graz, Austria.
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Selesniemi K, Reedy M, Gultice A, Guilbert LJ, Brown TL. Transforming growth factor-beta induces differentiation of the labyrinthine trophoblast stem cell line SM10. Stem Cells Dev 2006; 14:697-711. [PMID: 16433625 DOI: 10.1089/scd.2005.14.697] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The mammalian placenta consists of different trophoblast cell types that assist in the variety of functions required for the maintenance of pregnancy. In rodents, labyrinthine trophoblasts of the placenta are especially important, because they are capable of differentiating into fused labyrinthine cells, which form the feto-maternal exchange surface. Even though the molecular signals triggering labyrinthine trophoblast differentiation are poorly understood, transforming growth factor-beta (TGF-beta) has been shown to be present in the placental environment and alter trophoblast development. In this study, we investigated the effects of TGF-beta on the differentiation of the labyrinthine trophoblast stem cell lines SM10 and HRP-1. RT-PCR analyses demonstrated that while the molecular expression of labyrinthine-specific lineage markers (Esx1, Tfeb, and Tec) was maintained in TGF-beta-treated SM10 and HRP-1 cells, TGF-beta induced the down-regulation of trophoblast stem cell markers Id2 and Cdx2. In contrast, TGF-beta induced the expression of a marker of differentiated labyrinthine trophoblasts, Gcm1, only in the SM10 cell line. Furthermore, we demonstrated an increased glucose uptake in the TGF-beta-treated SM10 cells, indicative of functional differentiation. Finally, cell fusion in TGF-beta-treated SM10 and HRP-1 cells was investigated by western blotting analysis of placental alkaline phosphatase and cadherin-11 and by microscopic analyses of cell morphology using green fluorescent protein (GFP) and rhodamine phalloidin staining. The western blotting and morphological analyses indicate TGF-beta-induced cell fusion and morphological differentiation in the SM10 cell line. The SM10 cell line will provide a new and unique model for detailed analysis of TGF-beta-induced molecular events associated with labyrinthine trophoblast differentiation and function.
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Affiliation(s)
- Kaisa Selesniemi
- Department of Neuroscience, Cell Biology, and Physiology, Wright State University School of Medicine, Dayton, Ohio 45435, USA
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31
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Bechi N, Ietta F, Romagnoli R, Focardi S, Corsi I, Buffi C, Paulesu L. Estrogen-Like Response to p-Nonylphenol in Human First Trimester Placenta and BeWo Choriocarcinoma Cells. Toxicol Sci 2006; 93:75-81. [PMID: 16790488 DOI: 10.1093/toxsci/kfl043] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
p-Nonylphenol (p-NP) is a metabolite of alkylphenol ethoxylates used as surfactants in the manufacturing industry. Although it is reported to have estrogenic activity and to be transferred from the mother to the embryo, no data are available on its effects on the development of the human placenta. In the present study, we investigated estrogen receptors' (ERs) expression in the first trimester human placenta. Using an in vitro model of chorionic villous explants, we then compared the effects of p-NP and 17beta-estradiol (17beta-E2). Finally, a trophoblast-derived choriocarcinoma cell line, BeWo, was used as a model of trophoblast cell differentiation. Our results showed that the first trimester placenta expresses three ER-alpha isoforms of 67, 46, and 39 kDa and one ER-beta isoform of 55 kDa. Immunohistochemistry revealed the expression of ER-alpha in the villous cytotrophoblast, whereas ER-beta was mainly expressed by the syncytiotrophoblast. Treatment of explant cultures with p-NP (10(-9)M) and 17beta-E2 (10(-9)M) significantly increased beta-hCG secretion and cell apoptosis but did not modify ER expression. After 72 h of exposure, hormone release was significantly higher in p-NP- than 17beta-E2-treated explant cultures. By this time, cleavage of caspase-3 was evident in cultures treated with 17beta-E2 and p-NP. In BeWo cells, a caspase-3 band of 20-16 kDa was evident after 1 h of treatment with p-NP and after 24 h of treatment with 17beta-E2 or forskolin. These findings suggest that the human trophoblast may be highly responsive to p-NP and raise concern about maternal exposure in early gestation.
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Affiliation(s)
- Nicoletta Bechi
- Department of Physiology, University of Siena, via Aldo Moro, Siena 53100, Italy
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32
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Dahia CL, Rao AJ. Demonstration of follicle-stimulating hormone receptor in cauda epididymis of rat. Biol Reprod 2006; 75:98-106. [PMID: 16598027 DOI: 10.1095/biolreprod.105.047704] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
FSH receptor has been shown to be specifically expressed only in the Sertoli cells in males. In one of our studies that consisted of deprival of endogenous FSH in immature rats and adult bonnet monkeys, atrophy of the epididymis was observed, cauda region being the most affected. Although epididymis is an androgen-dependent tissue, the changes in histology of the cauda region were observed without any associated change in the levels of testosterone in FSH-deprived animals. Considering this, it was of interest to evaluate the possibility of epididymis being a direct target for FSH action. In the present study, we have examined the expression of FSH receptor in the epididymis of rat and monkey. In the cauda region of rat epididymis, FSH receptor expression was demonstrated by RT-PCR and Northern and Western blot analyses. FSH receptor was found to be functional as observed by its ability to bind 125IoFSH, by an increase in cAMP production, and by BrdU incorporation following addition of FSH under in vitro conditions. These results suggest the possibility of a role for FSH in regulating the growth of the epididymis.
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Affiliation(s)
- Chitra Lekha Dahia
- Department of Biochemistry, Indian Institute of Science, Bangalore-560012, India
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Zharikova OL, Deshmukh SV, Nanovskaya TN, Hankins GDV, Ahmed MS. The effect of methadone and buprenorphine on human placental aromatase. Biochem Pharmacol 2006; 71:1255-64. [PMID: 16455059 DOI: 10.1016/j.bcp.2005.12.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2005] [Revised: 12/23/2005] [Accepted: 12/27/2005] [Indexed: 11/20/2022]
Abstract
Methadone and buprenorphine (BUP) are used for treatment of the pregnant opiate addict. CYP19/aromatase is the major placental enzyme responsible for the metabolism of methadone to 2-ethylidine-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) and BUP to norbuprenorphine (norBUP). The aim of this investigation was to determine the effects of methadone and BUP on the activity of placental microsomal aromatase in the conversion of its endogenous substrates testosterone to 17beta-estradiol (E(2)) and 16alpha-hydroxytestosterone (16-OHT) to estriol (E(3)). The conversion of testosterone and 16-OHT by human placental microsomes exhibited saturation kinetics, and the apparent K(m) values were 0.2 +/- 1 and 6 +/- 3 microM, respectively. V(max) values for E(2) and E(3) formation were 70 +/- 16 and 28 +/- 10 pmol/mg proteinmin, respectively. Also, data obtained revealed that methadone and BUP are competitive inhibitors of testosterone conversion to E(2) and 16-OHT to E(3). The K(i) for methadone inhibition of E(2) and E(3) formation were 393 +/-144 and 53 +/- 28 microM, respectively, and for BUP the K(i) was 36 +/- 9 and 6 +/- 1 microM. The higher potency of the two opiates and their metabolites in inhibiting E(3) formation is in agreement with the lower affinity of 16-OHT than testosterone to aromatase. Moreover, the metabolites EDDP and norBUP were weaker inhibitors of aromatase than their parent compounds. The determined inhibition constants of methadone and BUP for E(3) formation by a cDNA-expressed CYP19 preparation were similar to those for placental microsomes. Therefore, data reported here suggest that methadone, BUP, and their metabolites are inhibitors of androgen aromatization in the placental biosynthesis of estrogens.
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Affiliation(s)
- Olga L Zharikova
- Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, 77555, USA
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Schuler G, Ozalp GR, Hoffmann B, Harada N, Browne P, Conley AJ. Reciprocal expression of 17α-hydroxylase-C17,20-lyase and aromatase cytochrome P450 during bovine trophoblast differentiation: a two-cell system drives placental oestrogen synthesis. Reproduction 2006; 131:669-79. [PMID: 16595718 DOI: 10.1530/rep.1.01033] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
No definitive information is yet available on the steroidogenic capacity of the two morphologically distinct cell types forming the bovine trophoblast, the uninucleated trophoblast cells (UTCs) and the trophoblast giant cells (TGCs). Hence, in order to localise 17α-hydroxylase-C17,20-lyase (P450c17) on a cellular level and to monitor its expression as a function of gestational age, placentomes from pregnant (days 80–284;n= 19), prepartal (days 273–282; 24–36 h prior to the onset of labour;n= 3) and parturient cows (n= 5) were immunostained for P450c17 using an antiserum against the recombinant bovine enzyme. At all stages investigated, P450c17 was exclusively found in the UTCs of chorionic villi (CV), where staining was ubiquitous between days 80 and 160, but was largely restricted to primary CV and the branching sites of secondary CV between days 160 and 240. Thereafter, a distinct ubiquitous staining reoccurred in the UTCs of all CV in late pregnant, prepartal and parturient animals. Using an antiserum against human aromatase cytochrome P450 (P450arom), specific cytoplasmic staining was observed in TGCs. In placentomes from pregnant cows, staining intensity was higher in mature compared with immature TGCs and was more pronounced in the trophoblast covering big stem villi compared with the trophoblast at other sites of the villous tree. In placentomes of a parturient cow, specific staining was only found in mature TGCs that survived the normal, but substantial, prepartal decline in TGC numbers. These results clearly showed that bovine UTCs and TGCs exhibit different steroidogenic capacities, constituting a ‘two-cell’ organisation for oestrogen synthesis. P450c17 expression appears to be quickly down-regulated and P450arom is up-regulated when UTCs enter the TGC differentiation pathway.
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Affiliation(s)
- G Schuler
- Clinic for Obstetrics, Gynecology and Andrology of Large and Small Animals, Justus-Liebig-University, Frankfurter Strasse 106, D-35392 Giessen, Germany.
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Yashwanth R, Rama S, Anbalagan M, Rao AJ. Role of estrogen in regulation of cellular differentiation: a study using human placental and rat Leydig cells. Mol Cell Endocrinol 2006; 246:114-20. [PMID: 16413111 DOI: 10.1016/j.mce.2005.11.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Estrogen classically is recognized as a growth-promoting hormone. Recent evidence suggests that estrogens are also involved in a wide variety of cellular and physiological functions involving the central nervous system, immune system, cardiovascular system and bone homeostasis. Our studies in cytotrophoblasts and BeWo cells, demonstrated that 17beta-estradiol induces terminal differentiation of placental trophoblasts directly and this differentiation is coupled with an increased production of TGFbeta1, which, in turn, affects telomerase activity and telomerase associated components at the level of hTERT. Furthermore, using rats treated in vivo with either EDS or estradiol and in vitro Leydig cell cultures, we proposed that 17beta-estradiol mediated down-regulation of collagen IV alpha4 expression could be one of the possible mechanisms for the inhibition of progenitor Leydig cell proliferation. In this review, we summarize the results from both the model systems, the human placental cytotrophoblast and rat Leydig cells to conclude that 17beta-estradiol has a unique stage-specific role in differentiation.
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Affiliation(s)
- R Yashwanth
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, Karnataka, India
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Soundararajan R, Zhang TT, Wang J, Vandewalle A, Pearce D. A novel role for glucocorticoid-induced leucine zipper protein in epithelial sodium channel-mediated sodium transport. J Biol Chem 2005; 280:39970-81. [PMID: 16216878 DOI: 10.1074/jbc.m508658200] [Citation(s) in RCA: 143] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The steroid hormone aldosterone stimulates sodium (Na+) transport in tight epithelia by altering the expression of target genes that regulate the activity and trafficking of the epithelial sodium channel (ENaC). We performed microarray analysis to identify aldosterone-regulated transcripts in mammalian kidney epithelial cells (mpkC-CD(c14)). One target, glucocorticoid-induced leucine zipper protein (GILZ), was previously identified by serial analysis of gene expression (SAGE); however, its function in epithelial ion transport was unknown. Here we show that GILZ expression is rapidly stimulated by aldosterone in mpkCCD(c14) and that GILZ, in turn, strongly stimulates ENaC-mediated Na+ transport by inhibiting extracellular signal-regulated kinase (ERK) signaling. In Xenopus oocytes with activated ERK, heterologous GILZ expression consistently inhibited phospho-ERK expression and markedly stimulated ENaC-mediated Na+ current, in a manner similar to that of U0126 (a pharmacologic inhibitor of ERK signaling). In mpkCCD(c14) cells, GILZ transfection similarly consistently inhibited phospho-ERK expression and stimulated transepithelial Na+ transport. Furthermore, aldosterone treatment of mpkCCD(c14) cells suppressed phospho-ERK levels with a time course that paralleled their increase of Na+ transport. Finally, GILZ expression markedly increased cell surface ENaC expression in epidermal growth factor-treated mammalian kidney epithelial cells, HEK 293. These observations suggest a novel link between GILZ and regulation of epithelial sodium transport through modulation of ERK signaling and could represent an important pathway for mediating aldosterone actions in health and disease.
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Affiliation(s)
- Rama Soundararajan
- Division of Nephrology, Department of Medicine, University of California at San Francisco, San Francisco, California 94143-0532, USA
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