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Huang X, Anderle P, Hostettler L, Baumann MU, Surbek DV, Ontsouka EC, Albrecht C. Identification of placental nutrient transporters associated with intrauterine growth restriction and pre-eclampsia. BMC Genomics 2018; 19:173. [PMID: 29499643 PMCID: PMC5833046 DOI: 10.1186/s12864-018-4518-z] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 01/31/2018] [Indexed: 12/17/2022] Open
Abstract
Background Gestational disorders such as intrauterine growth restriction (IUGR) and pre-eclampsia (PE) are main causes of poor perinatal outcomes worldwide. Both diseases are related with impaired materno-fetal nutrient transfer, but the crucial transport mechanisms underlying IUGR and PE are not fully elucidated. In this study, we aimed to identify membrane transporters highly associated with transplacental nutrient deficiencies in IUGR/PE. Results In silico analyses on the identification of differentially expressed nutrient transporters were conducted using seven eligible microarray datasets (from Gene Expression Omnibus), encompassing control and IUGR/PE placental samples. Thereby 46 out of 434 genes were identified as potentially interesting targets. They are involved in the fetal provision with amino acids, carbohydrates, lipids, vitamins and microelements. Targets of interest were clustered into a substrate-specific interaction network by using Search Tool for the Retrieval of Interacting Genes. The subsequent wet-lab validation was performed using quantitative RT-PCR on placentas from clinically well-characterized IUGR/PE patients (IUGR, n = 8; PE, n = 5; PE+IUGR, n = 10) and controls (term, n = 13; preterm, n = 7), followed by 2D-hierarchical heatmap generation. Statistical evaluation using Kruskal-Wallis tests was then applied to detect significantly different expression patterns, while scatter plot analysis indicated which transporters were predominantly influenced by IUGR or PE, or equally affected by both diseases. Identified by both methods, three overlapping targets, SLC7A7, SLC38A5 (amino acid transporters), and ABCA1 (cholesterol transporter), were further investigated at the protein level by western blotting. Protein analyses in total placental tissue lysates and membrane fractions isolated from disease and control placentas indicated an altered functional activity of those three nutrient transporters in IUGR/PE. Conclusions Combining bioinformatic analysis, molecular biological experiments and mathematical diagramming, this study has demonstrated systematic alterations of nutrient transporter expressions in IUGR/PE. Among 46 initially targeted transporters, three significantly regulated genes were further investigated based on the severity and the disease specificity for IUGR and PE. Confirmed by mRNA and protein expression, the amino acid transporters SLC7A7 and SLC38A5 showed marked differences between controls and IUGR/PE and were regulated by both diseases. In contrast, ABCA1 may play an exclusive role in the development of PE. Electronic supplementary material The online version of this article (10.1186/s12864-018-4518-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiao Huang
- Swiss National Centre of Competence in Research, NCCR TransCure, University of Bern, Bern, Switzerland.,Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Pascale Anderle
- Swiss Institute of Bioinformatics and HSeT Foundation, Lausanne, Switzerland.,Sitem-insel AG, Bern, Switzerland
| | - Lu Hostettler
- Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Marc U Baumann
- Swiss National Centre of Competence in Research, NCCR TransCure, University of Bern, Bern, Switzerland.,Department of Obstetrics and Gynaecology, University Hospital, University of Bern, Bern, Switzerland
| | - Daniel V Surbek
- Swiss National Centre of Competence in Research, NCCR TransCure, University of Bern, Bern, Switzerland.,Department of Obstetrics and Gynaecology, University Hospital, University of Bern, Bern, Switzerland
| | - Edgar C Ontsouka
- Swiss National Centre of Competence in Research, NCCR TransCure, University of Bern, Bern, Switzerland.,Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Christiane Albrecht
- Swiss National Centre of Competence in Research, NCCR TransCure, University of Bern, Bern, Switzerland. .,Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, Bern, Switzerland.
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Anuk AT, Kose S, Fırat C, Ozer E, Altunyurt S. Pendrin Expression in Preeclampsia: A Prospective Immunohistochemical Staining Study on Placental Bed Biopsies. Fetal Pediatr Pathol 2017; 36:364-372. [PMID: 28949777 DOI: 10.1080/15513815.2017.1346016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION To assess the pendrin expression density in placental bed biopsies from preeclampsia cases in comparison with healthy term controls. MATERIAL AND METHODS A prospective case-control study with 106 placental bed biopsies obtained during cesarean deliveries. Pendrin expression was evaluated by immunohistochemical staining in different hypertensive disorders of pregnancy. RESULTS Pendrin immunostaining frequency was higher in the hypertensive disorders group (p: 0.024), which was a result of the high frequency in the early-onset preeclampsia group. Uterine artery pulsatility indices were higher in pendrin positive patients than in the negatives in the case group. Gravidity was not found to affect the pendrin expression frequency in the placental bed. CONCLUSION Placental ischemia seems to be an important determinant of pendrin expression in pregnant decidua. Increased pendrin density in early-onset preeclampsia could be a pathogenetic mechanism in or a part of the adaptational response to the development of the hypertension.
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Affiliation(s)
- Ali T Anuk
- a Department of Obstetrics and Gynecology , Dokuz Eylul University School of Medicine , Balcova, Izmir , Turkey
| | - Semir Kose
- b Division of Perinatology, Department of Obstetrics and Gynecology , Dokuz Eylul University School of Medicine , Balcova, Izmir , Turkey
| | - Canan Fırat
- c Department of Medical Pathology , Dokuz Eylul University School of Medicine , Balcova, Izmir , Turkey
| | - Erdener Ozer
- c Department of Medical Pathology , Dokuz Eylul University School of Medicine , Balcova, Izmir , Turkey
| | - Sabahattin Altunyurt
- b Division of Perinatology, Department of Obstetrics and Gynecology , Dokuz Eylul University School of Medicine , Balcova, Izmir , Turkey
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Karatas A, Erdem H, Karatas Z, Ozlu T, Cakmak B. The effect of smoking on placental pendrin expression. J OBSTET GYNAECOL 2016; 37:11-14. [PMID: 28013561 DOI: 10.1080/01443615.2016.1174825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Pendrin is important for transport of iodine across the placenta. Thiocyanate coming from cigarette is a competitive inhibitor of iodine transport. We aimed to evaluate the pendrin immunostaining intensity in placentas of smoker and non-smoker women. Placental tissues from 61 women, of which 28 were in smoking, and 33 were in non-smoking group were evaluated by immunohistochemical staining. Positive immunostaining was evaluated using a semiquantitative score: 0, negative; +, mild; ++, moderate; and +++, intense. Birth weight was significantly lower in the smoker group (p = 0.024). There was a negative correlation between birth weight and intensity of placental pendrin immunostaining in the smoker group (r = -0.44, p = 0.02). Placentas of the smoking women showed significantly higher immunostaining with pendrin than the control group (p = 0.006). Thiocyonate coming from cigarettes may competitively inhibit pendrin mediated iodine transport in the placenta and adversely affect foetal development by this mechanism.
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Affiliation(s)
- Ahmet Karatas
- a Department of Obstetrics and Gynaecology , School of Medicine, Abant Izzet Baysal University, Golkoy Kampusu, Golkoy Yerleskesi , Bolu , Turkey
| | - Havva Erdem
- b Department of Medical Pathology , School of Medicine, Duzce University, Merkez Yerleskesi , Konuralp , Duzce , Turkey
| | - Zehra Karatas
- c Department of Paediatrics , School of Medicine, Abant Izzet Baysal University, Golkoy Kampusu, Golkoy Yerleskesi , Bolu , Turkey
| | - Tulay Ozlu
- a Department of Obstetrics and Gynaecology , School of Medicine, Abant Izzet Baysal University, Golkoy Kampusu, Golkoy Yerleskesi , Bolu , Turkey
| | - Bulent Cakmak
- d Department of Obstetrics and Gynaecology , School of Medicine, Gaziosmanpasa University, Sevki Erek Yerleskesi , Tokat , Turkey
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