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Das P, Bose R, Paul M, Nandy D, Basak T, Ain R. IL1β-NFκβ-Myocardin signaling axis governs trophoblast-directed plasticity of vascular smooth muscle cells. FASEB J 2024; 38:e23637. [PMID: 38720403 DOI: 10.1096/fj.202302403r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 03/27/2024] [Accepted: 04/18/2024] [Indexed: 05/18/2024]
Abstract
Vascular smooth muscle cell (VSMC) plasticity is fundamental in uterine spiral artery remodeling during placentation in Eutherian mammals. Our previous work showed that the invasion of trophoblast cells into uterine myometrium coincides with a phenotypic change of VSMCs. Here, we elucidate the mechanism by which trophoblast cells confer VSMC plasticity. Analysis of genetic markers on E13.5, E16.5, and E19.5 in the rat metrial gland, the entry point of uterine arteries, revealed that trophoblast invasion is associated with downregulation of MYOCARDIN, α-smooth muscle actin, and calponin1, and concomitant upregulation of Smemb in VSMCs. Myocardin overexpression or knockdown in VSMCs led to upregulation or downregulation of contractile markers, respectively. Co-culture of trophoblast cells with VSMCs decreased MYOCARDIN expression along with compromised expression of contractile markers in VSMCs. However, co-culture of trophoblast cells with VSMCs overexpressing MYOCARDIN inhibited their change in phenotype, whereas, overexpression of transactivation domain deleted MYOCARDIN failed to elicit this response. Furthermore, the co-culture of trophoblast cells with VSMCs led to the activation of NFκβ signaling. Interestingly, despite producing IL-1β, trophoblast cells possess only the decoy receptor, whereas, VSMCs possess the IL-1β signaling receptor. Treatment of VSMCs with exogenous IL-1β led to a decrease in MYOCARDIN and an increase in phosphorylation of NFκβ. The effect of trophoblast cells in the downregulation of MYOCARDIN in VSMCs was reversed by blocking NFκβ translocation to the nucleus. Together, these data highlight that trophoblast cells direct VSMC plasticity, and trophoblast-derived IL-1β is a key player in downregulating MYOCARDIN via the NFκβ signaling pathway.
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Affiliation(s)
- Priyanka Das
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Rumela Bose
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Madhurima Paul
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Debdyuti Nandy
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Trishita Basak
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Rupasri Ain
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, India
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Bose R, Jana SS, Ain R. Cellular Prion protein moonlights vascular smooth muscle cell fate: Surveilled by trophoblast cells. J Cell Physiol 2023; 238:2794-2811. [PMID: 37819170 DOI: 10.1002/jcp.31130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/31/2023] [Accepted: 09/15/2023] [Indexed: 10/13/2023]
Abstract
Uterine spiral artery remodeling (uSAR) is a hallmark of hemochorial placentation. Compromised uSAR leads to adverse pregnancy outcomes. Salient developmental events involved in uSAR are active areas of research and include (a) trophendothelial cell invasion into the spiral arteries, selected demise of endothelial cells; (b) de-differentiation of vascular smooth muscle cells (VSMC); and (c) migration and/or death of VSMCs surrounding spiral arteries. Here we demonstrated that cellular prion (PRNP) is expressed in the rat metrial gland, the entry point of spiral arteries with the highest expression on E16.5, the day at which trophoblast invasion peaks. PRNP is expressed in VSMCs that drift away from the arterial wall. RNA interference of Prnp functionally restricted migration and invasion of rat VSMCs. Furthermore, PRNP interacted with two migration-promoting factors, focal adhesion kinase (FAK) and platelet-derived growth factor receptor-β (PDGFR-β), forming a ter-molecular complex in both the metrial gland and A7r5 cells. The presence of multiple putative binding site of odd skipped related-1 (OSR1) transcription factor on the Prnp promoter was observed using in silico promoter analysis. Ectopic overexpression of OSR1 increased, and knockdown of OSR1 decreased expression of PRNP in VSMCs. Coculture of VSMCs with rat primary trophoblast cells decreased the levels of OSR1 and PRNP. Interestingly, PRNP knockdown led to apoptotic death in ~9% of VSMCs and activated extrinsic apoptotic pathways. PRNP interacts with TRAIL-receptor DR4 and protects VSMCs from TRAIL-mediated apoptosis. These results highlight the biological functions of PRNP in VSMC cell-fate determination during uteroplacental development, an important determinant of healthy pregnancy outcome.
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Affiliation(s)
- Rumela Bose
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Sarmita Sanjay Jana
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Rupasri Ain
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
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3
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Griffith JA, Dunn A, DeVallance E, Schafner KJ, Engles KJ, Batchelor TP, Goldsmith WT, Wix K, Hussain S, Bowdridge EC, Nurkiewicz TR. Maternal nano-titanium dioxide inhalation alters fetoplacental outcomes in a sexually dimorphic manner. FRONTIERS IN TOXICOLOGY 2023; 5:1096173. [PMID: 36950144 PMCID: PMC10025460 DOI: 10.3389/ftox.2023.1096173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 02/16/2023] [Indexed: 03/08/2023] Open
Abstract
The placenta plays a critical role in nutrient-waste exchange between the maternal and fetal circulations, thus functioning as an interface that profoundly impacts fetal growth and development. The placenta has long been considered an asexual organ, but, due to its embryonic origin it shares the same sex as the fetus. Exposures to toxicant such as diesel exhaust, have been shown to result in sexually dimorphic outcomes like decreased placental mass in exposed females. Therefore, we hypothesize that maternal nano-TiO2 inhalation exposure during gestation alters placental hemodynamics in a sexually dimorphic manner. Pregnant Sprague-Dawley rats were exposed from gestational day 10-19 to nano-TiO2 aerosols (12.17 ± 1.69 mg/m3) or filtered air (sham-control). Dams were euthanized on GD20, and fetal tissue was collected based on fetal sex: whole placentas, placental junctional zone (JZ), and placental labyrinth zone (LZ). Fetal mass, placental mass, and placental zone percent areas were assessed for sex-based differences. Exposed fetal females were significantly smaller compared to their exposed male counterparts (2.65 ± 0.03 g vs 2.78 ± 0.04 g). Nano-TiO2 exposed fetal females had a significantly decreased percent junctional zone area compared to the sham-control females (24.37 ± 1.30% vs 30.39 ± 1.54%). The percent labyrinth zone area was significantly increased for nano-TiO2 females compared to sham-control females (75.63 ± 1.30% vs 69.61 ± 1.54%). Placental flow and hemodynamics were assessed with a variety of vasoactive substances. It was found that nano-TiO2 exposed fetal females only had a significant decrease in outflow pressure in the presence of the thromboxane (TXA2) mimetic, U46619, compared to sham-control fetal females (3.97 ± 1.30 mm Hg vs 9.10 ± 1.07 mm Hg) and nano-TiO2 fetal males (9.96 ± 0.66 mm Hg). Maternal nano-TiO2 inhalation exposure has a greater effect on fetal female mass, placental zone mass and area, and adversely impacts placental vasoreactivity. This may influence the female growth and development later in life, future studies need to further study the impact of maternal nano-TiO2 inhalation exposure on zone specific mechanisms.
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Affiliation(s)
- Julie A. Griffith
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Allison Dunn
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Evan DeVallance
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Kallie J. Schafner
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Kevin J. Engles
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Thomas P. Batchelor
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - William T. Goldsmith
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Kimberley Wix
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Salik Hussain
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Elizabeth C. Bowdridge
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
| | - Timothy R. Nurkiewicz
- Department of Physiology, Pharmacology, and Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
- Center for Inhalation Toxicology, West Virginia University School of Medicine, Morgantown, WV, United States
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Balahmar RM, Ranganathan B, Ebegboni V, Alamir J, Rajakumar A, Deepak V, Sivasubramaniam S. Analyses of selected tumour-associated factors expression in normotensive and preeclamptic placenta. Pregnancy Hypertens 2022; 29:36-45. [PMID: 35717832 DOI: 10.1016/j.preghy.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 06/04/2022] [Accepted: 06/07/2022] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Human placenta is often considered a controlled-tumour because of shared properties such as invasion and angiogenesis. We assessed the status of a few selected tumour-associated factors (TAFs) in late onset pre-eclamptic (PE) and normotensive (NT) placentae, to understand their involvement in trophoblast invasion. These molecules include aldehyde dehydrogenase (ALDH3A1), aurora kinases (AURK-A/C), platelet derived growth factor receptor-α (PDGFRα), jagged-1 (JAG1) and twist related protein-1 (TWIST1). METHODS The expression of TAF was compared in 13 NT and 11 PE (late onset) placentae using immunoblotting/immunohistochemistry. We then used a novel spheroidal cell model developed from transformed human first trimester trophoblast cell lines HTR8/SVneo and TEV-1 to determine the expression and localization of these six factors during invasion. We also compared the expression of these TAFs during migration and invasion. RESULTS Our results suggest that expressions of ALDH3A1, AURK-A, PDGFRα, and TWIST1 are significantly upregulated in PE placentae (p < 0.05) when compared to NT placentae, whereas AURK-C and JAG1 are down-regulated (p < 0.05). The protein expression pattern of all the six factors were found to be similar in spheroids in comparison to their parental counterparts. The invasive potential of the spheroids was also enhanced when compared with the parental cells. DISCUSSION Collectively, data from our present study suggests that these TAFs are involved in placental invasion and their altered expressions may be regarded as a compensatory mechanism against reduced invasion.
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Affiliation(s)
- Reham M Balahmar
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Bhuvaneshwari Ranganathan
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Vernon Ebegboni
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Jumanah Alamir
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Augustine Rajakumar
- Department of Gynecology & Obstetrics(3), Emory University School of Medicine, Atlanta, GA 30033, USA
| | - Venkataraman Deepak
- School of Human Sciences, College of Life and Natural Sciences, University of Derby, Kedleston Road, Derby DE22 1GB, United Kingdom.
| | - Shiva Sivasubramaniam
- School of Human Sciences, College of Life and Natural Sciences, University of Derby, Kedleston Road, Derby DE22 1GB, United Kingdom.
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Shukla V, Soares MJ. Modeling Trophoblast Cell-Guided Uterine Spiral Artery Transformation in the Rat. Int J Mol Sci 2022; 23:ijms23062947. [PMID: 35328368 PMCID: PMC8950824 DOI: 10.3390/ijms23062947] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 12/20/2022] Open
Abstract
The rat possesses hemochorial placentation with deep intrauterine trophoblast cell invasion and trophoblast-guided uterine spiral artery remodeling, which resembles human placentation. Uterine spiral arteries are extensively remodeled to deliver sufficient supply of maternal blood and nutrients to the developing fetus. Inadequacies in these key processes negatively impact fetal growth and development. Recent innovations in genome editing combined with effective phenotyping strategies have provided new insights into placental development. Application of these research approaches has highlighted both conserved and species-specific features of hemochorial placentation. The review provides foundational information on rat hemochorial placental development and function during physiological and pathological states, especially as related to the invasive trophoblast cell-guided transformation of uterine spiral arteries. Our goal is to showcase the utility of the rat as a model for in vivo mechanistic investigations targeting regulatory events within the uterine-placental interface.
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Affiliation(s)
- Vinay Shukla
- Institute for Reproduction and Perinatal Research, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Correspondence: (V.S.); (M.J.S.)
| | - Michael J. Soares
- Institute for Reproduction and Perinatal Research, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Department of Obstetrics and Gynecology, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Center for Perinatal Research, Children’s Mercy Research Institute, Children’s Mercy, Kansas City, MO 64108, USA
- Correspondence: (V.S.); (M.J.S.)
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Soares MJ, Varberg KM, Iqbal K. Hemochorial placentation: development, function, and adaptations. Biol Reprod 2019; 99:196-211. [PMID: 29481584 DOI: 10.1093/biolre/ioy049] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 02/21/2018] [Indexed: 11/12/2022] Open
Abstract
Placentation is a reproductive adaptation that permits fetal growth and development within the protected confines of the female reproductive tract. Through this important role, the placenta also determines postnatal health and susceptibility to disease. The hemochorial placenta is a prominent feature in primate and rodent development. This manuscript provides an overview of the basics of hemochorial placental development and function, provides perspectives on major discoveries that have shaped placental research, and thoughts on strategies for future investigation.
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Affiliation(s)
- Michael J Soares
- Institute for Reproduction and Perinatal Research and the Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA.,Department of Pediatrics, University of Kansas Medical Center, Kansas City, Kansas, USA and the Center for Perinatal Research, Children΄s Research Institute, Children΄s Mercy, Kansas City, Missouri, USA
| | - Kaela M Varberg
- Institute for Reproduction and Perinatal Research and the Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Khursheed Iqbal
- Institute for Reproduction and Perinatal Research and the Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
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Silveira AS, Aydos RD, Ramalho RT, Silva IS, Caldas RDA, Santos Neto ATD, Rodrigues CT. Oxidative stress effects in the uterus, placenta and fetus of pregnant rats submitted to acute and chronic stress. Acta Cir Bras 2018; 33:806-815. [PMID: 30328913 DOI: 10.1590/s0102-865020180090000009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 08/04/2018] [Indexed: 12/24/2022] Open
Abstract
PURPOSE To evaluate the effects of oxidative stress in pregnant rats submitted to acute and chronic stress, relating to alterations in the uterus, placenta and fetus. METHODS Twenty-four female Wistar albino (Rattus norvegicus), were divided into four groups, for induction of oxidative stress the animals were submitted to cold and physical immobilization. Plasma fasting glucose and MDA were determined in all groups and the fetuses and placentas were measured. RESULTS There were no statistical differences in the levels of malonic dialdehyde (MDA), however the averages of chronic stress group were higher compared to control groups, which could explain the observed adverse effects; there was no correlation between puppies' size, the weight of the placenta and MDA values. CONCLUSIONS Chronic stress causes adverse effects, when compared to control groups; chronic stress group had fetuses, placentas and number of puppies, significantly lower compared to other groups. The rats exposed to chronic stress, also presented a higher frequency of fetal resorption.
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Affiliation(s)
- Adriano Silva Silveira
- Fellow Master degree, Postgraduate Program in Health and Development in the Midwest Region, Universidade Federal do Mato Grosso do Sul (UFMS), Campo Grande-MS, Brazil. Conception and design of the study; technical procedures; acquisition, interpretation and analysis of data; manuscript writing
| | - Ricardo Dutra Aydos
- PhD, Associate Professor of Surgery, Postgraduate Program in Health and Development in the Midwest Region, UFMS, Campo Grande-MS, Brazil. Conception and design of the study, interpretation of data, manuscript writing, critical revision, final approval
| | - Rondon Tosta Ramalho
- Full Professor, Laboratory of Experimental Carcinogenicity, UFMS, Campo Grande-MS, Brazil. Macroscopic and histopathologic analysis
| | - Iandara Schettert Silva
- Full Professor, Postgraduate Program in Health and Development in the Midwest Region, UFMS, Campo Grande-MS, Brazil. Intellectual and scientific content of the study
| | - Ruy de Araujo Caldas
- Senior Visiting Professor, UFMS, Campo Grande-MS, Brazil. English language, manuscript writing
| | - Abílio Torres Dos Santos Neto
- Fellow Master degree, Postgraduate Program in Health and Development in the Midwest Region, UFMS, Campo Grande-MS, Brazil. Technical procedures
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Yang Y, Abdulhasan M, Awonuga A, Bolnick A, Puscheck EE, Rappolee DA. Hypoxic Stress Forces Adaptive and Maladaptive Placental Stress Responses in Early Pregnancy. Birth Defects Res 2018; 109:1330-1344. [PMID: 29105384 DOI: 10.1002/bdr2.1149] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Accepted: 10/07/2017] [Indexed: 12/19/2022]
Abstract
This review focuses on hypoxic stress and its effects on the placental lineage and the earliest differentiation events in mouse and human placental trophoblast stem cells (TSCs). Although the placenta is a decidual organ at the end of pregnancy, its earliest rapid growth and function at the start of pregnancy precedes and supports growth and function of the embryo. Earliest function requires that TSCs differentiate, however, "hypoxia" supports rapid growth, but not differentiation of TSCs. Most of the literature on earliest placental "hypoxia" studies used 2% oxygen which is normoxic for TSCs. Hypoxic stress happens when oxygen level drops below 2%. It decreases anabolism, proliferation, potency/stemness and increases differentiation, despite culture conditions that would sustain proliferation and potency. Thus, to study the pathogenesis due to TSC dysfunction, it is important to study hypoxic stress below 2%. Many studies have been performed using 0.5 to 1% oxygen in cultured mouse TSCs. From all these studies, a small number has examined human trophoblast lines and primary first trimester placental hypoxic stress responses in culture. Some other stress stimuli, aside from hypoxic stress, are used to elucidate common and unique aspects of hypoxic stress. The key outcomes produced by hypoxic stress are mitochondrial, anabolic, and proliferation arrest, and this is coupled with stemness loss and differentiation. Hypoxic stress can lead to depletion of stem cells and miscarriage, or can lead to later dysfunctions in placentation and fetal development. Birth Defects Research 109:1330-1344, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Yu Yang
- CS Mott Center for Human Growth and Development, Department of Obstetrics & Gynecology, Reproductive Endocrinology and Infertility, Wayne State University School of Medicine, Detroit, Michigan.,Department of Physiology, Wayne State University School of Medicine, Detroit, Michigan
| | - Mohammed Abdulhasan
- CS Mott Center for Human Growth and Development, Department of Obstetrics & Gynecology, Reproductive Endocrinology and Infertility, Wayne State University School of Medicine, Detroit, Michigan
| | - Awoniyi Awonuga
- CS Mott Center for Human Growth and Development, Department of Obstetrics & Gynecology, Reproductive Endocrinology and Infertility, Wayne State University School of Medicine, Detroit, Michigan
| | - Alan Bolnick
- CS Mott Center for Human Growth and Development, Department of Obstetrics & Gynecology, Reproductive Endocrinology and Infertility, Wayne State University School of Medicine, Detroit, Michigan
| | - Elizabeth E Puscheck
- CS Mott Center for Human Growth and Development, Department of Obstetrics & Gynecology, Reproductive Endocrinology and Infertility, Wayne State University School of Medicine, Detroit, Michigan
| | - Daniel A Rappolee
- CS Mott Center for Human Growth and Development, Department of Obstetrics & Gynecology, Reproductive Endocrinology and Infertility, Wayne State University School of Medicine, Detroit, Michigan.,Department of Physiology, Wayne State University School of Medicine, Detroit, Michigan.,Institutes for Environmental Health Science, Wayne state University School of Medicine, Detroit, Michigan.,Department of Biology, University of Windsor, Windsor, ON, Canada
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Banu SK, Stanley JA, Sivakumar KK, Taylor RJ, Arosh JA, Burghardt RC. Editor's Highlight: Exposure to CrVI during Early Pregnancy Increases Oxidative Stress and Disrupts the Expression of Antioxidant Proteins in Placental Compartments. Toxicol Sci 2017; 155:497-511. [PMID: 28077780 PMCID: PMC5291216 DOI: 10.1093/toxsci/kfw231] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Epidemiologic studies document relationships between chromium VI (CrVI) exposure and increased risk of spontaneous abortion, stillbirth, preterm birth, and neonatal death in pregnant women. Environmental contamination with CrVI is a growing problem both in the United States and developing countries. CrVI is widely used in numerous industries. This study was designed to understand the mechanism of CrVI toxicity on placental oxidative stress and antioxidant (AOX) machinery. Pregnant mother rats were treated with or without CrVI (50 ppm K2Cr2O7) through drinking water from gestational day (GD) 9.5-14.5, and placentas were analyzed on GD 18.5. Results indicated that CrVI reduced the trophoblast cell population. CrVI increased reactive oxygen species (ROS) and decreased the expression of AOX proteins. CrVI disrupts the trophoblast proliferation of the placenta. This study provides insight into the critical role of AOXs in placental function.
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Affiliation(s)
- Sakhila K Banu
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843
| | - Jone A Stanley
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843
| | - Kirthiram K Sivakumar
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843
| | - Robert J Taylor
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843
| | - Joe A Arosh
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843
| | - Robert C Burghardt
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Mail stop TAMU 4458, Texas A&M University, College Station, Texas 77843
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Tyurenkov IN, Perfilova VN, Smirnov AV, Reznikova LB, Poroyskaya AV, Verovsky VE. Features of endothelial dysfunction and morphofunctional changes of the uteroplacental complex in experimentally induced pre-eclampsia. Pregnancy Hypertens 2016; 6:423-430. [PMID: 27939494 DOI: 10.1016/j.preghy.2016.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 10/28/2016] [Accepted: 11/02/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Pre-eclampsia is considered to be a severe complication of pregnancy. Theoretical investigation of its etiology and pathogenesis, development of strategies for its prevention and treatment are conditioned by the development of appropriate experimental models of this pathology. METHODS The study involved Wistar rat lines weighing 220-240g. Experimental pre-eclampsia was modeled by replacing drinking water consumed by pregnant female rats with 1.8% NaCl solution throughout gestation. Arterial pressure, protein concentration in urine and tissue hydration extent were measured on the 1st and 21st days of gestation. Uteroplacental blood flow, vasodilating and antithrombotic endothelial functions were also assessed. For pathomorphological and immunohistochemical investigation murine monoclonal antibodies against vascular endothelial growth factor (VEGF), polyclonal rabbit antibodies against inducible and endothelial NO-synthases were used. RESULTS Replacing drinking water with 1.8% NaCl solution in female rats throughout gestation elevates arterial pressure, causes proteinuria and edema, impairs vasodilating and antithrombotic endothelial properties, and suppresses uteroplacental blood circulation. A morphological examination of the animals revealed the signs of focal duodenitis, spasms of myometrium arteries with no invasion of syncytiotrophoblast into its walls which also involved a raised VEGF and reduced eNOS expression in the endothelium of myometrial vessels, as well as cytoplasmic expression of iNOS in the cells of inflammatory infiltrate. CONCLUSIONS These findings make it possible to conclude that replacing drinking water with 1.8% NaCl solution causes a number of changes typical of pre-eclampsia and, therefore, can be regarded as an experimental model of this pathologic condition.
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Affiliation(s)
- I N Tyurenkov
- Department of Pharmacology and Biopharmacy of the Department for Refresher Training, Volgograd State Medical University, 400001 Volgograd, Russia
| | - V N Perfilova
- Department of Pharmacology and Biopharmacy of the Department for Refresher Training, Volgograd State Medical University, 400001 Volgograd, Russia.
| | - A V Smirnov
- Department of Pathological Anatomy, Volgograd State Medical University, Volgograd, Russia
| | - L B Reznikova
- Department of Pharmacology and Biopharmacy of the Department for Refresher Training, Volgograd State Medical University, 400001 Volgograd, Russia
| | - A V Poroyskaya
- Department of Pharmacology and Biopharmacy of the Department for Refresher Training, Volgograd State Medical University, 400001 Volgograd, Russia
| | - V E Verovsky
- Department of Theoretical Biochemistry with a Course of Clinical Biochemistry, Volgograd State Medical University, Volgograd, Russia
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Peng W, Chen Y, Luo X, Shan N, Lan X, Olson D, Zhang H, Ding YB, Qi HB. DNA methylation-associated repression of MEST/PEG1 expression contributes to the invasion of extravillous trophoblast cells. Placenta 2016; 46:92-101. [PMID: 27697227 DOI: 10.1016/j.placenta.2016.08.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 08/21/2016] [Accepted: 08/30/2016] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The invasion of extravillous cytotrophoblasts (EVTs) into the maternal uterine decidua and vasculature is critical for human placenta development and pregnancy maintenance. The imprinted gene MEST/PEG1 has been implicated in trophoblast development; however, the role of MEST in EVT invasion and the accompanying early pregnancy complications are not fully understood. METHODS Western blot, immunofluorescence and immunohistochemistry were used to detect MEST protein expression and localization by using antibodies recognize 2 reported isoforms. Specific small interference RNA (siRNA) targeting both of the MEST isoforms was applied to silence MEST expression in extravillous explants and HTR8/SVneo cells. Cell invasion and migration were assessed using the Matrigel invasion, Transwell migration assay and the xCELLigence system. Promoter DNA methylation was examined using bisulfite-sequencing polymerase chain reaction (BSP). RESULTS MEST protein was highly expressed in EVTs in the first trimester placenta and in the invasive EVT cell lines HTR-8/Svneo and HPT-8. Weak MEST expression was found in cytotrophoblasts (CTBs) and the choriocarcinoma-derived CTB cell line JEG-3. The specific siRNA knockdown of MEST expression significantly reduced HTR-8/Svneo cell invasion and migration as well as extravillous explant outgrowth, which were associated with the downregulation of Twist, N-cadherin and Vimentin. Decreased MEST protein expression with isoform 2 promoter hypermethylation was observed in the placentas of missed abortions, suggesting a possible pathological mechanism of missed abortion. CONCLUSIONS Suppressed expression of MEST was associated with its isoform 2 promoter hypermethylation ex vivo placenta tissues and in vitro cultured EVT cell lines. The present results provide a possible pathological mechanism of missed abortion.
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Affiliation(s)
- Wei Peng
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, 400016, China; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Ying Chen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, 400016, China; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xin Luo
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, 400016, China; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Nan Shan
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, 400016, China; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xi Lan
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, China
| | - David Olson
- Departments of Obstetrics and Gynecology, Pediatrics and Physiology, University of Alberta, Edmonton, AB T6G 2S2, Canada; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Hua Zhang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, 400016, China; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yu-Bin Ding
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, China; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China.
| | - Hong-Bo Qi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, 400016, China; Canada-China-New Zealand Joint Laboratory of Maternal and Fetal Medicine, Chongqing Medical University, Chongqing, 400016, China.
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12
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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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Brown MB, von Chamier M, Allam AB, Reyes L. M1/M2 macrophage polarity in normal and complicated pregnancy. Front Immunol 2014; 5:606. [PMID: 25505471 PMCID: PMC4241843 DOI: 10.3389/fimmu.2014.00606] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 11/11/2014] [Indexed: 12/14/2022] Open
Abstract
Tissue macrophages play an important role in all stages of pregnancy, including uterine stromal remodeling (decidualization) before embryo implantation, parturition, and post-partum uterine involution. The activation state and function of utero-placental macrophages are largely dependent on the local tissue microenvironment. Thus, macrophages are involved in a variety of activities such as regulation of immune cell activities, placental cell invasion, angiogenesis, and tissue remodeling. Disruption of the uterine microenvironment, particularly during the early stages of pregnancy (decidualization, implantation, and placentation) can have profound effects on macrophage activity and subsequently impact pregnancy outcome. In this review, we will provide an overview of the temporal and spatial regulation of utero-placental macrophage activation during normal pregnancy in human beings and rodents with a focus on more recent findings. We will also discuss the role of M1/M2 dysregulation within the intrauterine environment during adverse pregnancy outcomes.
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Affiliation(s)
- Mary B Brown
- D. H. Barron Reproductive and Perinatal Biology Research Program, Department of Infectious Disease and Pathology, College of Veterinary Medicine, University of Florida , Gainesville, FL , USA
| | - Maria von Chamier
- D. H. Barron Reproductive and Perinatal Biology Research Program, Department of Infectious Disease and Pathology, College of Veterinary Medicine, University of Florida , Gainesville, FL , USA
| | - Ayman B Allam
- D. H. Barron Reproductive and Perinatal Biology Research Program, Department of Infectious Disease and Pathology, College of Veterinary Medicine, University of Florida , Gainesville, FL , USA
| | - Leticia Reyes
- D. H. Barron Reproductive and Perinatal Biology Research Program, Department of Infectious Disease and Pathology, College of Veterinary Medicine, University of Florida , Gainesville, FL , USA
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Bolnick JM, Kilburn BA, Bajpayee S, Reddy N, Jeelani R, Crone B, Simmerman N, Singh M, Diamond MP, Armant DR. Trophoblast retrieval and isolation from the cervix (TRIC) for noninvasive prenatal screening at 5 to 20 weeks of gestation. Fertil Steril 2014; 102:135-142.e6. [PMID: 24825422 PMCID: PMC10411519 DOI: 10.1016/j.fertnstert.2014.04.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 04/06/2014] [Accepted: 04/07/2014] [Indexed: 01/04/2023]
Abstract
OBJECTIVE To use trophoblast cells accumulating in the endocervical canal at the beginning of pregnancy for noninvasive prenatal testing. DESIGN Prospective, double-blinded test for fetal gender. SETTING Academic medical center. PATIENT(S) Fifty-six women with singleton pregnancies at gestational age 5-20 weeks. INTERVENTION(S) Isolation of fetal cells from resident maternal cells in endocervical specimens using anti-human leukocyte antigen G coupled to magnetic nanoparticles; cell phenotyping immunofluorescently with a panel of trophoblast subtype-specific proteins; DNA integrity assessment with terminal dUTP nick-end labeling (TUNEL); and polymerase chain reaction (PCR) and fluorescent in situ hybridization (FISH) to detect sex chromosomes in individual cells. MAIN OUTCOME MEASURE(S) Trophoblast phenotype, TUNEL index, and percentage male cells. RESULT(S) The women were given a routine Papanicolaou test; fetal genders were verified from medical records. Recovery after immunomagnetic isolation averaged 746±59 cells across gestational age, with 99% expressing chorionic gonadotropin, whereas the depleted cell fraction expressed none. The isolated cells had an extravillous trophoblast phenotype and intact nuclear DNA (>95%). Fetal gender was determined in 20 specimens without error by PCR. The FISH analysis of isolated cells from male specimens validated their fetal origin. CONCLUSION(S) Noninvasive prenatal testing is feasible beginning at a gestational age of 5 weeks.
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Affiliation(s)
- Jay M Bolnick
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Brian A Kilburn
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Swati Bajpayee
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Nitya Reddy
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Roohi Jeelani
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Barbara Crone
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Neil Simmerman
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Manivinder Singh
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan
| | - Michael P Diamond
- Department of Obstetrics and Gynecology, Georgia Regents University, Augusta, Georgia
| | - D Randall Armant
- Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan; Anatomy and Cell Biology, C.S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan; Program in Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland.
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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: 50] [Impact Index Per Article: 5.0] [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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Soares MJ, Chakraborty D, Renaud SJ, Kubota K, Bu P, Konno T, Rumi MAK. Regulatory pathways controlling the endovascular invasive trophoblast cell lineage. J Reprod Dev 2012; 58:283-7. [PMID: 22790871 DOI: 10.1262/jrd.2011-039] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Hemochorial placentation is characterized by trophoblast-directed uterine spiral artery remodeling. The rat and human both possess hemochorial placentation and exhibit remarkable similarities regarding the depth of trophoblast invasion and the extent of uterine vascular modification. In vitro and in vivo research methodologies have been established using the rat as an animal model to investigate the extravillous/invasive trophoblast lineage. With these research approaches, two signaling pathways controlling the differentiation and invasion of the trophoblast cell lineage have been identified: i) hypoxia/hypoxia inducible factor and ii) phosphatidylinositol 3-kinase/AKT/Fos like antigen 1. Dissection of these pathways has facilitated identification of fundamental regulators of the invasive trophoblast cell lineage.
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Affiliation(s)
- Michael J Soares
- Institute for Reproductive Health and Regenerative Medicine, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas 66160, USA.
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Fedorova L, Gatto-Weis C, Smaili S, Khurshid N, Shapiro JI, Malhotra D, Horrigan T. Down-regulation of the transcription factor snail in the placentas of patients with preeclampsia and in a rat model of preeclampsia. Reprod Biol Endocrinol 2012; 10:15. [PMID: 22360878 PMCID: PMC3298516 DOI: 10.1186/1477-7827-10-15] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Accepted: 02/23/2012] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Placental malfunction in preeclampsia is believed to be a consequence of aberrant differentiation of trophoblast lineages and changes in utero-placental oxygenation. The transcription factor Snail, a master regulator molecule of epithelial-mesenchymal transition in embryonic development and in cancer, is shown to be involved in trophoblast differentiation as well. Moreover, Snail can be controlled by oxidative stress and hypoxia. Therefore, we examined the expression of Snail and its downstream target, e-cadherin, in human normal term, preterm and preeclamptic placentas, and in pregnant rats that developed preeclampsia-like symptoms in the response to a 20-fold increase in sodium intake. METHODS Western blotting analysis was used for comparative expression of Snail and e- cadherin in total protein extracts. Placental cells expressing Snail and e-cadherin were identified by immunohistochemical double-labeling technique. RESULTS The levels of Snail protein were decreased in human preeclamptic placentas by 30% (p < 0.01) compared to normal term, and in the rat model by 40% (p < 0.001) compared to control placentas. In preterm placentas, the levels of Snail expression varied, yet there was a strong trend toward statistical significance between preterm and preeclamptic placentas. In humans, e-cadherin protein level was 30% higher in preeclamptic (p < 0.05) placentas and similarly, but not significantly (p = 0.1), high in the preterm placentas compared to normal term. In the rat model of preeclampsia, e-cadherin was increased by 60% (p < 0.01). Immunohistochemical examination of human placentas demonstrated Snail-positive staining in the nuclei of the villous trophoblasts and mesenchymal cells and in the invasive trophoblasts of the decidua. In the rat placenta, the majority of Snail positive cells were spongiotrophoblasts of the junctional zone, while in the labyrinth, Snail-positive sinusoidal giant trophoblasts cells were found in some focal areas located close to the junctional zone. CONCLUSION We demonstrated that human preeclampsia and the salt-induced rat model of preeclampsia are associated with the reduced levels of Snail protein in placenta. Down-regulation of the transcription factor Snail in placental progenitor cell lineages, either by intrinsic defects and/or by extrinsic and maternal factors, may affect normal placenta development and function and thus contribute to the pathology of preeclampsia.
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Affiliation(s)
- Larisa Fedorova
- Department of Medicine, University of Toledo School of Medicine, Toledo, OH 43614, USA
| | - Cara Gatto-Weis
- Department of Pathology, University of Toledo School of Medicine, Toledo, OH 43614, USA
| | - Sleiman Smaili
- Department of Obstetrics and Gynecology, University of Toledo School of Medicine, Toledo, OH 43614, USA
| | - Nauman Khurshid
- Department of Obstetrics and Gynecology, University of Toledo School of Medicine, Toledo, OH 43614, USA
| | - Joseph I Shapiro
- Department of Medicine, University of Toledo School of Medicine, Toledo, OH 43614, USA
| | - Deepak Malhotra
- Department of Medicine, University of Toledo School of Medicine, Toledo, OH 43614, USA
| | - Terrence Horrigan
- Department of Obstetrics and Gynecology, University of Toledo School of Medicine, Toledo, OH 43614, USA
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Soares MJ, Chakraborty D, Karim Rumi MA, Konno T, Renaud SJ. Rat placentation: an experimental model for investigating the hemochorial maternal-fetal interface. Placenta 2012; 33:233-43. [PMID: 22284666 DOI: 10.1016/j.placenta.2011.11.026] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Revised: 11/23/2011] [Accepted: 11/28/2011] [Indexed: 11/19/2022]
Abstract
The rat possesses hemochorial placentation with deep intrauterine trophoblast cell invasion and trophoblast-directed uterine spiral artery remodeling; features shared with human placentation. Recognition of these similarities spurred the establishment of in vitro and in vivo research methods using the rat as an animal model to address mechanistic questions regarding development of the hemochorial placenta. The purpose of this review is to provide the requisite background to help move the rat to the forefront in placentation research.
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Affiliation(s)
- M J Soares
- Institute for Reproductive Health and Regenerative Medicine, Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, 3901 Rainbow Blvd, Kansas City, KS 66160, USA.
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