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Zhang S, Jia E, Zhang W, Wang Z, Deng D, Zhang Y, Huang X, Tian Q, Tan Y, Wang B, Lin F. Injectable alginate-based zwitterionic hydrogels promoting endometrial repair and restoring fertility. Int J Biol Macromol 2024; 275:133458. [PMID: 38945326 DOI: 10.1016/j.ijbiomac.2024.133458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/20/2024] [Accepted: 06/25/2024] [Indexed: 07/02/2024]
Abstract
The development of novel therapeutic approaches to facilitate endometrial repair and regeneration while preventing adhesion recurrence is a crucial research objective aimed at enhancing clinical outcomes for women with intrauterine adhesions (IUA). In this study, we introduced an injectable Alg-GMA/PTSB zwitterionic hydrogel, characterized by excellent biocompatibility, anti-protein adsorption properties, and biodegradability. In a rat model, the hydrogel significantly promoted the regeneration and angiogenesis of damaged endometrial tissue, leading to improved recovery of epithelial cells, glands, proliferation, and vascularization. Furthermore, it exhibited the ability to suppress cellular apoptosis and collagen deposition, thereby mitigating fibrosis. Additionally, the hydrogel restored the expression of estrogen/progesterone receptors and endometrial receptivity markers, contributing to enhanced embryo implantation and fertility. These findings underscore the potential of the hydrogel as a promising therapeutic strategy for addressing endometrial injury, reducing fibrosis, restoring fertility, and ultimately improving outcomes for women with IUA.
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Affiliation(s)
- Sisi Zhang
- Department of Reproductive Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Erna Jia
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, China; Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Weiqi Zhang
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Zhiying Wang
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, China
| | - Da Deng
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, China
| | - Yixin Zhang
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Xuefeng Huang
- Department of Reproductive Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Qingquan Tian
- Hangzhou Kewan New Materials Technology Co., Ltd, Hangzhou 311305, China
| | - Ying Tan
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, China; Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China.
| | - Bujun Wang
- Department of Obstetrics, Pingyang People's Hospital of Wenzhou Medical University, Wenzhou 325499, China.
| | - Feng Lin
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
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2
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Holdsworth-Carson SJ, Menkhorst E, Maybin JA, King A, Girling JE. Cyclic processes in the uterine tubes, endometrium, myometrium, and cervix: pathways and perturbations. Mol Hum Reprod 2023; 29:gaad012. [PMID: 37225518 PMCID: PMC10208902 DOI: 10.1093/molehr/gaad012] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/01/2023] [Indexed: 05/26/2023] Open
Abstract
This review leads the 2023 Call for Papers in MHR: 'Cyclical function of the female reproductive tract' and will outline the complex and fascinating changes that take place in the reproductive tract during the menstrual cycle. We will also explore associated reproductive tract abnormalities that impact or are impacted by the menstrual cycle. Between menarche and menopause, women and people who menstruate living in high-income countries can expect to experience ∼450 menstrual cycles. The primary function of the menstrual cycle is to prepare the reproductive system for pregnancy in the event of fertilization. In the absence of pregnancy, ovarian hormone levels fall, triggering the end of the menstrual cycle and onset of menstruation. We have chosen to exclude the ovaries and focus on the other structures that make up the reproductive tract: uterine tubes, endometrium, myometrium, and cervix, which also functionally change in response to fluctuations in ovarian hormone production across the menstrual cycle. This inaugural paper for the 2023 MHR special collection will discuss our current understanding of the normal physiological processes involved in uterine cyclicity (limited specifically to the uterine tubes, endometrium, myometrium, and cervix) in humans, and other mammals where relevant. We will emphasize where knowledge gaps exist and highlight the impact that reproductive tract and uterine cycle perturbations have on health and fertility.
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Affiliation(s)
- Sarah J Holdsworth-Carson
- Julia Argyrou Endometriosis Centre, Epworth HealthCare, Melbourne, Australia
- Department of Obstetrics and Gynaecology, University of Melbourne and Gynaecology Research Centre, Royal Women’s Hospital, Melbourne, Australia
| | - Ellen Menkhorst
- Department of Obstetrics and Gynaecology, University of Melbourne and Gynaecology Research Centre, Royal Women’s Hospital, Melbourne, Australia
| | - Jacqueline A Maybin
- Institute for Regeneration and Repair, MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh, UK
| | - Anna King
- Department of Obstetrics and Gynaecology, NHS Lothian, Edinburgh, UK
| | - Jane E Girling
- Department of Obstetrics and Gynaecology, University of Melbourne and Gynaecology Research Centre, Royal Women’s Hospital, Melbourne, Australia
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
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3
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Non-Coding RNAs as Biomarkers for Embryo Quality and Pregnancy Outcomes: A Systematic Review and Meta-Analysis. Int J Mol Sci 2023; 24:ijms24065751. [PMID: 36982824 PMCID: PMC10052053 DOI: 10.3390/ijms24065751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
Despite advances in in vitro fertilization (IVF), there is still a lack of non-invasive and reliable biomarkers for selecting embryos with the highest developmental and implantation potential. Recently, small non-coding RNAs (sncRNAs) have been identified in biological fluids, and extracellular sncRNAs are explored as diagnostic biomarkers in the prediction of IVF outcomes. To determine the predictive role of sncRNAs in embryo quality and IVF outcomes, a systematic review and meta-analysis was performed. Articles were retrieved from PubMed, EMBASE, and Web of Science from 1990 to 31 July 2022. Eighteen studies that met the selection criteria were analyzed. In total, 22 and 47 different sncRNAs were found to be dysregulated in follicular fluid (FF) and embryo spent culture medium (SCM), respectively. MiR-663b, miR-454 and miR-320a in FF and miR-20a in SCM showed consistent dysregulation in two different studies. The meta-analysis indicated the potential predictive performance of sncRNAs as non-invasive biomarkers, with a pooled area under curve (AUC) value of 0.81 (95% CI 0.78, 0.844), a sensitivity of 0.79 (95% CI 0.72, 0.85), a specificity of 0.67 (95% CI 0.52, 0.79) and a diagnostic odds ratio (DOR) of 8 (95% CI 5, 12). Significant heterogeneity was identified among studies in sensitivity (I2 = 46.11%) and specificity (I2 = 89.73%). This study demonstrates that sncRNAs may distinguish embryos with higher developmental and implantation potentials. They can be promising non-invasive biomarkers for embryo selection in ART. However, the significant heterogeneity among studies highlights the demand for prospective multicenter studies with optimized methods and adequate sample sizes in the future.
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4
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Eivazi S, Tanhaye Kalate Sabz F, Amiri S, Zandieh Z, Bakhtiyari M, Rashidi M, Aflatoonian R, Mehraein F, Amjadi F. MiRNAs secreted by human blastocysts could be potential gene expression regulators during implantation. Mol Biol Rep 2023; 50:1375-1383. [PMID: 36469260 DOI: 10.1007/s11033-022-08121-6] [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: 07/24/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Micro RNAs (miRNAs) are small non-coding RNAs known as essential regulators of cell-cell communication. Recent studies have revealed that miRNAs are secreted by a blastocyst in culture media. We hypothesized that endometrial epithelial cells take up embryo-derived miRNAs as well as other soluble factors and regulate their receptivity-related gene expression. METHODS AND RESULTS Blastocyst culture media (BCM) were collected from the individually cultured embryos, while human endometrial epithelial cells (HEECs) were collected from healthy fertile volunteers. To evaluate the effect of BCM on the endometrial receptivity gene expression, HEECs were co-cultured with implanted BCM, non-implanted BCM, and a control culture medium. After determining altered gene expression in the HEECs, the miRNAs-related genes through bioinformatics databases were identified and evaluated in the BCM. Co-culture of primary HEECs with BCM significantly stimulated the expression levels of VEGFA, HBEGF, HOXA10, and LIF in the implanted group compared with non-implanted and control groups. The fold changes of miR-195 significantly diminished in the implanted BCM group compared with the non-implanted BCM group. Reduced fold changes of miR-29b, 145 and increased miR-223 were also observed in the implanted BCM group compared with the non-implanted ones. CONCLUSION miRNAs could function as potential gene expression regulators during implantation. These molecules are secreted by human blastocyst, taken up by endometrial epithelial cells, and cause a change in the endometrial function. We found that BCMs can be effective in implantation process by stimulating related receptivity gene expression.
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Affiliation(s)
- Sadegh Eivazi
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, 1168743514, Iran
| | - Fatemeh Tanhaye Kalate Sabz
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, 1168743514, Iran
- Department of Anatomical Sciences and Pathology, School of Medicine, North Khorasan University of Medical Sciences, bojnurd, Iran
| | - Sadegh Amiri
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, 1168743514, Iran
| | - Zahra Zandieh
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, 1168743514, Iran
- Shahid Akbar Abadi Clinical Research Development Unit (SHACRDU), School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Mehrdad Bakhtiyari
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, 1168743514, Iran
| | - Mandana Rashidi
- Shahid Akbar Abadi Clinical Research Development Unit (SHACRDU), School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Reza Aflatoonian
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Fereshteh Mehraein
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, 1168743514, Iran.
| | - Fatemehsadat Amjadi
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, 1168743514, Iran.
- Shahid Akbar Abadi Clinical Research Development Unit (SHACRDU), School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran.
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5
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Gauster M, Moser G, Wernitznig S, Kupper N, Huppertz B. Early human trophoblast development: from morphology to function. Cell Mol Life Sci 2022; 79:345. [PMID: 35661923 PMCID: PMC9167809 DOI: 10.1007/s00018-022-04377-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/13/2022] [Accepted: 05/13/2022] [Indexed: 12/18/2022]
Abstract
Human pregnancy depends on the proper development of the embryo prior to implantation and the implantation of the embryo into the uterine wall. During the pre-implantation phase, formation of the morula is followed by internalization of blastomeres that differentiate into the pluripotent inner cell mass lineage, while the cells on the surface undergo polarization and differentiate into the trophectoderm of the blastocyst. The trophectoderm mediates apposition and adhesion of the blastocyst to the uterine epithelium. These processes lead to a stable contact between embryonic and maternal tissues, resulting in the formation of a new organ, the placenta. During implantation, the trophectoderm cells start to differentiate and form the basis for multiple specialized trophoblast subpopulations, all of which fulfilling specific key functions in placentation. They either differentiate into polar cells serving typical epithelial functions, or into apolar invasive cells that adapt the uterine wall to progressing pregnancy. The composition of these trophoblast subpopulations is crucial for human placenta development and alterations are suggested to result in placenta-associated pregnancy pathologies. This review article focuses on what is known about very early processes in human reproduction and emphasizes on morphological and functional aspects of early trophoblast differentiation and subpopulations.
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Affiliation(s)
- Martin Gauster
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria
| | - Gerit Moser
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria
| | - Stefan Wernitznig
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria
| | - Nadja Kupper
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria
| | - Berthold Huppertz
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6, 8010, Graz, Austria.
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6
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Moldovan GE, Miele L, Fazleabas AT. Notch signaling in reproduction. Trends Endocrinol Metab 2021; 32:1044-1057. [PMID: 34479767 PMCID: PMC8585702 DOI: 10.1016/j.tem.2021.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/27/2021] [Accepted: 08/06/2021] [Indexed: 12/22/2022]
Abstract
The Notch signaling pathway is conserved among mammalian species and controls proliferation, differentiation, and cell death in many organs throughout the body including the reproductive tract. Notch signaling plays critical roles in the development and function of both the male and female reproductive systems. Specifically, within the female reproductive tract, Notch signaling is hormone regulated and mediates key reproductive events important for ovarian and uterine function. In this review, we highlight the tissues that express Notch receptors, ligands, and downstream effectors and distinguish how these molecules regulate reproductive function in male and female mice, non-human primates, and humans. Finally, we describe some of the aberrations in Notch signaling in female reproductive pathologies and identify opportunities for future investigation.
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Affiliation(s)
- Genna E Moldovan
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA
| | - Lucio Miele
- Department of Genetics, Louisiana State University Health Sciences Center and Stanley S. Scott Cancer Center, New Orleans, LA 70112, USA
| | - Asgerally T Fazleabas
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA.
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7
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Gurner KH, Evans J, Hutchison JC, Harvey AJ, Gardner DK. A microenvironment of high lactate and low pH created by the blastocyst promotes endometrial receptivity and implantation. Reprod Biomed Online 2021; 44:14-26. [PMID: 34810095 DOI: 10.1016/j.rbmo.2021.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 09/06/2021] [Accepted: 09/10/2021] [Indexed: 12/21/2022]
Abstract
RESEARCH QUESTION Is the blastocyst's idiosyncratic metabolic production of lactate, and creation of a specialized microenvironment at the implatation site, an important mediator of maternal-fetal signalling to promote endometrial receptivity and implantation? DESIGN Hormonally primed ECC-1 and Ishikawa cells were used to assess functional changes to the endometrial epithelium after exposure to lactic acid (LA), LA with neutralized pH (nLA) or acidic pH (pHL). Tight junction integrity (transepithelial resistance [TER]), cellular proliferation or changes to gene expression by RT-PCR were analysed. The effect of LA on Endometrial stromal cells decidualization and migratory capacity, and HUVEC endothelial tube formation and angiogenesis, were also assessed. RESULTS Treatment of ECC-1 cells with 2.5 mM (P = 0.0037), 5 mM (P = 0.0044), 7.5 mM and 10 mM (P = 0.003) (P = 0.0021) LA significantly decreased the rate of cellular proliferation while TER was decreased with exposure to 2.5 mM LA (P = 0.024), 5 mM LA (P = 0.021) and 7.5 mM LA (P = 0.033). Exposure to nLA or pHL had no effect on proliferation or TER. Upregulation of GLUT4 (P = 0.002), GPR81 (P = 0.048), VEGF, SNAI1 (both P < 0.001) and RELA (P = 0.023) mRNA expression was observed after exposure of Ishikawa cells to combined LA plus pHL. Lactic acid increased the migratory capacity of decidualized stromal cells (P = 0.047) without changing the extent of decidualization. HUVEC tube formation was significantly increased by 5 mM LA exposure (P = 0.009). CONCLUSIONS The identification of LA as an important mediator in the maternal-fetal dialogue underpinning implantation is supported. Further examination of the role of LA within the infertile or compromised endometrium could improve natural and assisted pregnancy success and needs further investigation.
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Affiliation(s)
- Kathryn H Gurner
- School of BioSciences, University of Melbourne VIC 3010, Australia; Melbourne IVF, East Melbourne VIC 3002, Australia
| | - Jemma Evans
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton VIC 3168, Australia; Department of Molecular and Translational Science, Monash University, Clayton VIC 3168, Australia
| | - Jennifer C Hutchison
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton VIC 3168, Australia; Department of Molecular and Translational Science, Monash University, Clayton VIC 3168, Australia
| | | | - David K Gardner
- School of BioSciences, University of Melbourne VIC 3010, Australia; Melbourne IVF, East Melbourne VIC 3002, Australia.
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8
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Zhou W, Menkhorst E, Dimitriadis E. Jagged1 regulates endometrial receptivity in both humans and mice. FASEB J 2021; 35:e21784. [PMID: 34252231 DOI: 10.1096/fj.202100590r] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/08/2021] [Accepted: 06/22/2021] [Indexed: 12/17/2022]
Abstract
The human endometrium undergoes cycle-dependent changes and is only receptive to an implanting blastocyst within a narrow window of 2-4 days in the mid-secretory phase. Such functional changes require delicate interplay between a diversity of factors including cytokines and signaling pathways. The Notch signaling pathway members are expressed in human endometrium. We have previously demonstrated that Notch ligand Jagged1 (JAG1) localizes in the endometrial luminal epithelium (LE) and is abnormally reduced in infertile women during receptivity. However, the functional consequences of reduced JAG1 production on endometrial receptivity to implantation of the blastocyst are unknown. This study aimed to determine the role of JAG1 in regulating endometrial receptivity in humans and mice. Knockdown of JAG1 in both primary human endometrial epithelial cells and Ishikawa cells significantly reduced their adhesive capacity to HTR8/SVneo (trophoblast cell line) spheroids. We confirmed that in human endometrial epithelial cells, JAG1 interacted with Notch Receptor 3 (NOTCH3) and knockdown of JAG1 significantly reduced the expression of Notch signaling downstream target HEY1 and classical receptivity markers. Knockdown of Jag1 in mouse LE significantly impaired blastocyst implantation. We identified ten genes (related to tight junction, infertility, and cell adhesion) that were differentially expressed by Jag1 knockdown in LE in mice. Further analysis of the tight junction family members in both species revealed that JAG1 altered the expression of tight junction components only in mice. Together, our data demonstrated that JAG1 altered endometrial epithelial cell adhesive capacity and regulated endometrial receptivity in both humans and mice likely via different mechanisms.
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Affiliation(s)
- Wei Zhou
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Parkville, VIC, Australia
| | - Ellen Menkhorst
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Parkville, VIC, Australia
| | - Evdokia Dimitriadis
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Parkville, VIC, Australia
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9
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Takamura M, Zhou W, Rombauts L, Dimitriadis E. The long noncoding RNA PTENP1 regulates human endometrial epithelial adhesive capacity in vitro: implications in infertility. Biol Reprod 2021; 102:53-62. [PMID: 31504217 DOI: 10.1093/biolre/ioz173] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 08/16/2019] [Accepted: 08/26/2019] [Indexed: 12/14/2022] Open
Abstract
There is general consensus that the synchronous development of the embryo and endometrium is absolutely essential for successful implantation. Recent studies have strongly suggested that embryo-secreted factors are able to deliver into the endometrial cavity/endometrium and alter its protein profile in preparation for implantation. However, there is limited research focusing on long noncoding RNA (lncRNA) changes in the endometrium that brought about by the embryonic derived factors. It has been suggested that lncRNA has intricate interplay with microRNA (miR), small (~19-22 nucleotides), non-protein-coding RNA, to regulate protein production in the endometrium, thus controlling adhesive capacity. Here through microarray assays, we compare the lncRNA profile of the primary human endometrial epithelial cells (HEECs) that have been precultured with blastocyst-conditioned media (BCM) from embryos that implanted versus nonimplanted. Our data indicate a substantial change of lncRNA expression in HEECs, including 9 up-regulated and 12 down-regulated lncRNAs after incubation with implanted BCM. Selective knockdown of PTENP1, the most increased lncRNA after implanted BCM treatment in the HEECs, compromised the spheroid adhesion (P < 0.001). Characterization of PTENP1 confirmed its expression in the luminal epithelium with staining appeared most intense in the midsecretory phase. Furthermore, we have recorded a substantial change of miR profile upon PTENP1 knockdown in HEECs. Overexpression of miR-590-3p, a novel predicted target of PTENP1, impaired spheroid adhesion (P < 0.001). Collectively, these data have supported a novel regulation system that lncRNAs were able to participate in the regulation of implantation through association with miRs.
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Affiliation(s)
- Masashi Takamura
- Centre for Reproductive Health, The Hudson Institute of Medical Research, Clayton, VIC, Australia
| | - Wei Zhou
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Parkville, VIC, Australia
| | - Luk Rombauts
- Monash IVF, Monash Surgical Private Hospital, Clayton, VIC, Australia
| | - Evdokia Dimitriadis
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Parkville, VIC, Australia
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10
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Poh QH, Rai A, Carmichael II, Salamonsen LA, Greening DW. Proteome reprogramming of endometrial epithelial cells by human trophectodermal small extracellular vesicles reveals key insights into embryo implantation. Proteomics 2021; 21:e2000210. [PMID: 33860638 DOI: 10.1002/pmic.202000210] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/29/2021] [Accepted: 04/12/2021] [Indexed: 01/02/2023]
Abstract
Embryo implantation into the receptive endometrium is critical in pregnancy establishment, initially requiring reciprocal signalling between outer layer of the blastocyst (trophectoderm cells) and endometrial epithelium; however, factors regulating this crosstalk remain poorly understood. Although endometrial extracellular vesicles (EVs) are known to signal to the embryo during implantation, the role of embryo-derived EVs remains largely unknown. Here, we provide a comprehensive proteomic characterisation of a major class of EVs, termed small EVs (sEVs), released by human trophectoderm cells (Tsc-sEVs) and their capacity to reprogram protein landscape of endometrial epithelium in vitro. Highly purified Tsc-sEVs (30-200 nm, ALIX+ , TSG101+ , CD9/63/81+ ) were enriched in known players of implantation (LIFR, ICAM1, TAGLN2, WNT5A, FZD7, ROR2, PRICKLE2), antioxidant activity (SOD1, PRDX1/4/6), tissue integrity (EZR, RAC1, RHOA, TNC), and focal adhesions (FAK, ITGA2/V, ITGB1/3). Functionally, Tsc-sEVs were taken up by endometrial cells, altered transepithelial electrical resistance, and upregulated proteins implicated in embryo attachment (ITGA2/V, ITGB1/3), immune regulation (CD59, CD276, LGALS3), and antioxidant activity (GPX1/3/4, PRDX1/2/4/5/6): processes that are critical for successful implantation. Collectively, we provide critical insights into Tsc-sEV-mediated regulation of endometrial function that contributes to our understanding of the molecular basis of implantation.
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Affiliation(s)
- Qi Hui Poh
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia.,Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, Australia
| | - Alin Rai
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia.,Central Clinical School, Monash University, Melbourne, Victoria, Australia.,Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Irena Iśka Carmichael
- Monash Micro Imaging, Monash, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Lois A Salamonsen
- Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Victoria, Australia
| | - David W Greening
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia.,Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, Australia.,Central Clinical School, Monash University, Melbourne, Victoria, Australia.,Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
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11
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Koo HS, Yoon MJ, Hong SH, Ahn J, Cha H, Lee D, Ko JE, Kwon H, Choi DH, Lee KA, Ko JJ, Kang YJ. CXCL12 enhances pregnancy outcome via improvement of endometrial receptivity in mice. Sci Rep 2021; 11:7397. [PMID: 33795831 PMCID: PMC8016928 DOI: 10.1038/s41598-021-86956-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 03/22/2021] [Indexed: 02/08/2023] Open
Abstract
Successful pregnancy inevitably depends on the implantation of a competent embryo into a receptive endometrium. Although many substances have been suggested to improve the rate of embryo implantation targeting enhancement of endometrial receptivity, currently there rarely are effective evidence-based treatments to prevent or cure this condition. Here we strongly suggest minimally-invasive intra-uterine administration of embryo-secreted chemokine CXCL12 as an effective therapeutic intervention. Chemokine CXCL12 derived from pre- and peri-implanting embryos significantly enhances the rates of embryo attachment and promoted endothelial vessel formation and sprouting in vitro. Consistently, intra-uterine CXCL12 administration in C57BL/6 mice improved endometrial receptivity showing increased integrin β3 and its ligand osteopontin, and induced endometrial angiogenesis displaying increased numbers of vessel formation near the lining of endometrial epithelial layer with higher CD31 and CD34 expression. Furthermore, intra-uterine CXCL12 application dramatically promoted the rates of embryo implantation with no morphologically retarded embryos. Thus, our present study provides a novel evidence that improved uterine endometrial receptivity and enhanced angiogenesis induced by embryo-derived chemokine CXCL12 may aid to develop a minimally-invasive therapeutic strategy for clinical treatment or supplement for the patients with repeated implantation failure with less risk.
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Affiliation(s)
- Hwa Seon Koo
- CHA Fertility Center Bundang, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Min-Ji Yoon
- Department of Biomedical Science, School of Life Science, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Seon-Hwa Hong
- CHA Fertility Center Bundang, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Jungho Ahn
- Department of Biomedical Science, School of Life Science, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Hwijae Cha
- Department of Biomedical Science, School of Life Science, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Danbi Lee
- Department of Biomedical Science, School of Life Science, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Ji-Eun Ko
- CHA Fertility Center Bundang, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Hwang Kwon
- CHA Fertility Center Bundang, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Dong Hee Choi
- CHA Fertility Center Bundang, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Kyung-Ah Lee
- Department of Biomedical Science, School of Life Science, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Jung-Jae Ko
- Department of Biomedical Science, School of Life Science, CHA University, Seongnam-si, Gyunggi-do, South Korea
| | - Youn-Jung Kang
- CHA Fertility Center Bundang, CHA University, Seongnam-si, Gyunggi-do, South Korea. .,Department of Biomedical Science, School of Life Science, CHA University, Seongnam-si, Gyunggi-do, South Korea. .,Department of Biochemistry, School of Medicine, CHA University, Seongnam-si, Gyunggi-do, South Korea.
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12
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Zafir S, Zhou W, Menkhorst E, Santos L, Dimitriadis E. MAML1: a coregulator that alters endometrial epithelial cell adhesive capacity. FERTILITY RESEARCH AND PRACTICE 2021; 7:8. [PMID: 33773601 PMCID: PMC8004388 DOI: 10.1186/s40738-021-00100-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/22/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Abnormalities in endometrial receptivity has been identified as a major barrier to successful embryo implantation. Endometrial receptivity refers to the conformational and biochemical changes occurring in the endometrial epithelial layer which make it adhesive and receptive to blastocyst attachment. This takes place during the mid-secretory phase of woman's menstrual cycle and is a result of a delicate interplay between numerous hormones, cytokines and other factors. Outside of this window, the endometrium is refractory to an implanting blastocyst. It has been shown that Notch ligands and receptors are dysregulated in the endometrium of infertile women. Mastermind Like Transcriptional Coactivator 1 (MAML1) is a known coactivator of the Notch signaling pathway. This study aimed to determine the role of MAML1 in regulating endometrial receptivity. METHODS The expression and localization of MAML1 in the fertile human endometrium (non-receptive proliferative phase versus receptive mid-secretory phase) were determined by immunohistochemistry. Ishikawa cells were used as an endometrial epithelial model to investigate the functional consequences of MAML1 knockdown on endometrial adhesive capacity to HTR8/SVneo (trophoblast cell line) spheroids. After MAML1 knockdown in Ishikawa cells, the expression of endometrial receptivity markers and Notch dependent and independent pathway members were assessed by qPCR. Two-tailed unpaired or paired student's t-test were used for statistical analysis with a significance threshold of P < 0.05. RESULTS MAML1 was localized in the luminal epithelium, glandular epithelium and stroma of human endometrium and the increased expression identified in the mid-secretory phase was restricted only to the luminal epithelium (P < 0.05). Functional analysis using Ishikawa cells demonstrated that knockdown of MAML1 significantly reduced epithelial adhesive capacity (P < 0.01) to HTR8/SVneo (trophoblast cell line) spheroids compared to control. MAML1 knockdown significantly affected the expression of classical receptivity markers (SPP1, DPP4) and this response was not directly via hormone receptors. The expression level of Hippo pathway target Ankyrin repeat domain-containing protein 1 (ANKRD1) was also affected after MAML1 knockdown in Ishikawa cells. CONCLUSION Our data strongly suggest that MAML1 is involved in regulating the endometrial adhesive capacity and may facilitate embryo attachment, either directly or indirectly through the Notch signaling pathway.
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Affiliation(s)
- Sadaf Zafir
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, Victoria, 3010, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Level 7, The Royal Women's Hospital, 20 Flemington Road, Parkville, Victoria, 3052, Australia
| | - Wei Zhou
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, Victoria, 3010, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Level 7, The Royal Women's Hospital, 20 Flemington Road, Parkville, Victoria, 3052, Australia
| | - Ellen Menkhorst
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, Victoria, 3010, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Level 7, The Royal Women's Hospital, 20 Flemington Road, Parkville, Victoria, 3052, Australia
| | - Leilani Santos
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, Victoria, 3010, Australia.,Gynaecology Research Centre, Royal Women's Hospital, Level 7, The Royal Women's Hospital, 20 Flemington Road, Parkville, Victoria, 3052, Australia
| | - Evdokia Dimitriadis
- Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, Victoria, 3010, Australia. .,Gynaecology Research Centre, Royal Women's Hospital, Level 7, The Royal Women's Hospital, 20 Flemington Road, Parkville, Victoria, 3052, Australia.
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Jonusiene V, Sasnauskiene A. Notch and Endometrial Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1287:47-57. [PMID: 33034025 DOI: 10.1007/978-3-030-55031-8_4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The human endometrium is a unique, highly dynamic tissue that undergoes cyclic changes of cell proliferation, differentiation, and death. Endometrial cancer is the most common malignancy among women in developed countries. Importantly, the incidence of endometrial cancer is rising in high-income countries. Currently histological classification is used for subtyping of endometrial cancer, while ongoing research is evaluating markers for more accurate molecular classification. Evolutionary conserved Notch signaling pathway regulates diverse cellular processes such as proliferation, differentiation, and cell invasion. Accumulating evidence links aberrant Notch signaling with diseases such as hyperplasia and endometrial cancer. This chapter summarizes the current state of Notch signaling investigations in the endometrium, endometriosis, and endometrial cancer.
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Affiliation(s)
- Violeta Jonusiene
- Vilnius University, Life Sciences Center, Institute of Biosciences, Vilnius, Lithuania.
| | - Ausra Sasnauskiene
- Vilnius University, Life Sciences Center, Institute of Biosciences, Vilnius, Lithuania
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14
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Hernández-Vargas P, Muñoz M, Domínguez F. Identifying biomarkers for predicting successful embryo implantation: applying single to multi-OMICs to improve reproductive outcomes. Hum Reprod Update 2020; 26:264-301. [PMID: 32096829 DOI: 10.1093/humupd/dmz042] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 10/08/2019] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Successful embryo implantation is a complex process that requires the coordination of a series of events, involving both the embryo and the maternal endometrium. Key to this process is the intricate cascade of molecular mechanisms regulated by endocrine, paracrine and autocrine modulators of embryonic and maternal origin. Despite significant progress in ART, implantation failure still affects numerous infertile couples worldwide and fewer than 10% of embryos successfully implant. Improved selection of both the viable embryos and the optimal endometrial phenotype for transfer remains crucial to enhancing implantation chances. However, both classical morphological embryo selection and new strategies incorporated into clinical practice, such as embryonic genetic analysis, morphokinetics or ultrasound endometrial dating, remain insufficient to predict successful implantation. Additionally, no techniques are widely applied to analyse molecular signals involved in the embryo-uterine interaction. More reliable biological markers to predict embryo and uterine reproductive competence are needed to improve pregnancy outcomes. Recent years have seen a trend towards 'omics' methods, which enable the assessment of complete endometrial and embryonic molecular profiles during implantation. Omics have advanced our knowledge of the implantation process, identifying potential but rarely implemented biomarkers of successful implantation. OBJECTIVE AND RATIONALE Differences between the findings of published omics studies, and perhaps because embryonic and endometrial molecular signatures were often not investigated jointly, have prevented firm conclusions being reached. A timely review summarizing omics studies on the molecular determinants of human implantation in both the embryo and the endometrium will help facilitate integrative and reliable omics approaches to enhance ART outcomes. SEARCH METHODS In order to provide a comprehensive review of the literature published up to September 2019, Medline databases were searched using keywords pertaining to omics, including 'transcriptome', 'proteome', 'secretome', 'metabolome' and 'expression profiles', combined with terms related to implantation, such as 'endometrial receptivity', 'embryo viability' and 'embryo implantation'. No language restrictions were imposed. References from articles were also used for additional literature. OUTCOMES Here we provide a complete summary of the major achievements in human implantation research supplied by omics approaches, highlighting their potential to improve reproductive outcomes while fully elucidating the implantation mechanism. The review highlights the existence of discrepancies among the postulated biomarkers from studies on embryo viability or endometrial receptivity, even using the same omic analysis. WIDER IMPLICATIONS Despite the huge amount of biomarker information provided by omics, we still do not have enough evidence to link data from all omics with an implantation outcome. However, in the foreseeable future, application of minimally or non-invasive omics tools, together with a more integrative interpretation of uniformly collected data, will help to overcome the difficulties for clinical implementation of omics tools. Omics assays of the embryo and endometrium are being proposed or already being used as diagnostic tools for personalised single-embryo transfer in the most favourable endometrial environment, avoiding the risk of multiple pregnancies and ensuring better pregnancy rates.
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Affiliation(s)
- Purificación Hernández-Vargas
- IVI-RMA Alicante, Innovation. Avda. de Denia 111, 03015 Alicante, Spain.,Fundación IVI, Innovation-IIS La Fe, Avda. Fernando Abril Martorell 106, Torre A, 1° 1.23, 46026 Valencia, Spain
| | - Manuel Muñoz
- IVI-RMA Alicante, Innovation. Avda. de Denia 111, 03015 Alicante, Spain.,Fundación IVI, Innovation-IIS La Fe, Avda. Fernando Abril Martorell 106, Torre A, 1° 1.23, 46026 Valencia, Spain
| | - Francisco Domínguez
- Fundación IVI, Innovation-IIS La Fe, Avda. Fernando Abril Martorell 106, Torre A, 1° 1.23, 46026 Valencia, Spain
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15
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Zhou W, Dimitriadis E. Secreted MicroRNA to Predict Embryo Implantation Outcome: From Research to Clinical Diagnostic Application. Front Cell Dev Biol 2020; 8:586510. [PMID: 33072767 PMCID: PMC7537741 DOI: 10.3389/fcell.2020.586510] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 08/24/2020] [Indexed: 12/14/2022] Open
Abstract
Embryo implantation failure is considered a leading cause of infertility and a significant bottleneck for in vitro fertilization (IVF) treatment. Confirmed factors that lead to implantation failure involve unhealthy embryos, unreceptive endometrium, and asynchronous development and communication between the two. The quality of embryos is further dependent on sperm parameters, oocyte quality, and early embryo development after fertilization. The extensive involvement of such different factors contributes to the variability of implantation potential across different menstrual cycles. An ideal approach to predict the implantation outcome should not compromise embryo implantation. The use of clinical material, including follicular fluid, cumulus cells, sperm, seminal exosomes, spent blastocyst culture medium, blood, and uterine fluid, that can be collected relatively non-invasively without compromising embryo implantation in a transfer cycle opens new perspectives for the diagnosis of embryo implantation potential. Compositional comparison of these samples between fertile women and women or couples with implantation failure has identified both quantitative and qualitative differences in the expression of microRNAs (miRs) that hold diagnostic potential for implantation failure. Here, we review current findings of secreted miRs that have been identified to potentially be useful in predicting implantation outcome using material that can be collected relatively non-invasively. Developing non-invasive biomarkers of implantation potential would have a major impact on implantation failure and infertility.
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Affiliation(s)
- Wei Zhou
- Department of Obstetrics and Gynaecology, The University of Melbourne, Parkville, VIC, Australia.,Gynaecology Research Centre, The Royal Women's Hospital, Parkville, VIC, Australia
| | - Evdokia Dimitriadis
- Department of Obstetrics and Gynaecology, The University of Melbourne, Parkville, VIC, Australia.,Gynaecology Research Centre, The Royal Women's Hospital, Parkville, VIC, Australia
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16
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Izmailova LS, Vorotelyak EA, Vasiliev AV. In Vitro Modeling of the Early Development of Mouse and Human Embryos. Russ J Dev Biol 2020. [DOI: 10.1134/s1062360420050045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Siristatidis CS, Sertedaki E, Karageorgiou V, Vaidakis D. Endometrial injection of embryo culture supernatant for subfertile women in assisted reproduction. Cochrane Database Syst Rev 2020; 8:CD013063. [PMID: 32797689 PMCID: PMC8094452 DOI: 10.1002/14651858.cd013063.pub2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Despite substantial improvements in the success of assisted reproduction techniques (ART), live birth rates may remain consistently low, and practitioners may look for innovative treatments to improve the outcomes. The injection of embryo culture supernatant in the endometrial cavity can be undertaken at various time intervals before embryo transfer. It provides an altered endometrial environment through the secretion of factors considered to facilitate implantation. It is proposed that injection of the supernatant into the endometrial cavity prior to embryo transfer will stimulate the endometrium and provide better conditions for implantation to take place. An increased implantation rate would subsequently increase rates of clinical pregnancy and live birth, but current robust evidence on the efficacy of injected embryo culture supernatant is lacking. OBJECTIVES To evaluate the effectiveness and safety of endometrial injection of embryo culture supernatant before embryo transfer in women undergoing ART. SEARCH METHODS Our search strategies were designed with the help of the Cochrane Gynaecology and Fertility Group Information Specialist. We sought to identify all published and unpublished randomised controlled trials (RCTs) meeting inclusion criteria. Searches were performed on 2 December 2019. We searched the Cochrane Gynaecology and Fertility Group Specialised Register of controlled trials, CENTRAL, MEDLINE, Embase, CINAHL, trials registries and grey literature. We made further searches in the UK National Institute for Health and Care Excellence (NICE) fertility assessment and treatment guidelines. We handsearched reference lists of relevant systematic reviews and RCTs, together with searches of PubMed and Google for any recent trials that have not yet been indexed in the major databases. We had no language or location restrictions. SELECTION CRITERIA We included RCTs testing the use of endometrial injection of embryo culture supernatant before embryo transfer during an ART cycle, compared with the non-use of this intervention, the use of placebo or the use of any other similar drug. DATA COLLECTION AND ANALYSIS Two review authors independently selected studies, assessed risk of bias, extracted data from studies and attempted to contact the authors where data were missing. We pooled studies using a fixed-effect model. Our primary outcomes were live birth/ongoing pregnancy and miscarriage. We performed statistical analysis using Review Manager 5. We assessed evidence quality using GRADE methods. MAIN RESULTS We found five RCTs suitable for inclusion in the review (526 women analysed). We made two comparisons: embryo culture supernatant use versus standard care or no intervention; and embryo culture supernatant use versus culture medium. All studies were published as full-text articles. Data derived from the reports or through direct communication with investigators were available for the final meta-analysis performed. The GRADE evidence quality of studies ranged from very low-quality to moderate-quality. Factors reducing evidence quality included high risk of bias due to lack of blinding, unclear risk of publication bias and selective outcome reporting, serious inconsistency among study outcomes, and serious imprecision due to wide confidence intervals (CIs) and low numbers of events. Comparison 1. Endometrial injection of embryo culture supernatant before embryo transfer versus standard care or no intervention: One study reported live birth only and two reported the composite outcome live birth and ongoing pregnancy. We are uncertain whether endometrial injection of embryo culture supernatant before embryo transfer during an ART cycle improves live birth/ongoing pregnancy rates compared to no intervention (odds ratio (OR) 1.11, 95% CI 0.73 to 1.70; 3 RCTs; n = 340, I2 = 84%; very low-quality evidence). Results suggest that if the chance of live birth/ongoing pregnancy following placebo or no treatment is assumed to be 42%, the chance following the endometrial injection of embryo culture supernatant before embryo transfer would vary between 22% and 81%. We are also uncertain whether the endometrial injection of embryo culture supernatant could decrease miscarriage rates, compared to no intervention (OR 0.89, 95% CI 0.44 to 1.78, 4 RCTs, n = 430, I2 = 58%, very low-quality evidence). Results suggest that if the chance of miscarriage following placebo or no treatment is assumed to be 9%, the chance following injection of embryo culture supernatant would vary between 3% and 30%. Concerning the secondary outcomes, we are uncertain whether the injection of embryo culture supernatant prior to embryo transfer could increase clinical pregnancy rates (OR 1.13, 95% CI 0.80 to 1.61; 5 RCTs; n = 526, I2 = 0%; very low-quality evidence), decrease ectopic pregnancy rates (OR 0.32, 95% CI 0.01 to 8.24; n = 250; 2 RCTs; I2 = 41%; very low-quality evidence), decrease multiple pregnancy rates (OR 0.70, 95% CI 0.26 to 1.83; 2 RCTs; n = 150; I2 = 63%; very low-quality evidence), or decrease preterm delivery rates (OR 0.63, 95% CI 0.17 to 2.42; 1 RCT; n = 90; I2 = 0%; very low-quality evidence), compared to no intervention. Finally, there may have been little or no difference in foetal abnormality rates between the two groups (OR 3.10, 95% CI 0.12 to 79.23; 1 RCT; n = 60; I2 = 0%; low-quality evidence). Comparison 2. Endometrial injection of embryo culture supernatant versus endometrial injection of culture medium before embryo transfer We are uncertain whether the use of embryo culture supernatant improves clinical pregnancy rates, compared to the use of culture medium (OR 1.09, 95% CI 0.48 to 2.46; n = 96; 1 RCT; very low-quality evidence). No study reported live birth/ongoing pregnancy, miscarriage, ectopic or multiple pregnancy, preterm delivery or foetal abnormalities. AUTHORS' CONCLUSIONS We are uncertain whether the addition of endometrial injection of embryo culture supernatant before embryo transfer as a routine method for the treatment of women undergoing ART can improve pregnancy outcomes. This conclusion is based on current available data from five RCTs, with evidence quality ranging from very low to moderate across studies. Further large well-designed RCTs reporting on live births and adverse clinical outcomes are still required to clarify the exact role of endometrial injection of embryo culture supernatant before embryo transfer.
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Affiliation(s)
- Charalampos S Siristatidis
- Assisted Reproduction Unit, 2nd Department of Obstetrics and Gynaecology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Vasilios Karageorgiou
- Second Department of Psychiatry, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dennis Vaidakis
- Obstetrics and Gynaecology Department, Larnaca General Hospital, Larnaca, Cyprus
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18
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Massimiani M, Lacconi V, La Civita F, Ticconi C, Rago R, Campagnolo L. Molecular Signaling Regulating Endometrium-Blastocyst Crosstalk. Int J Mol Sci 2019; 21:E23. [PMID: 31861484 PMCID: PMC6981505 DOI: 10.3390/ijms21010023] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/29/2019] [Accepted: 12/16/2019] [Indexed: 12/13/2022] Open
Abstract
Implantation of the embryo into the uterine endometrium is one of the most finely-regulated processes that leads to the establishment of a successful pregnancy. A plethora of factors are released in a time-specific fashion to synchronize the differentiation program of both the embryo and the endometrium. Indeed, blastocyst implantation in the uterus occurs in a limited time frame called the "window of implantation" (WOI), during which the maternal endometrium undergoes dramatic changes, collectively called "decidualization". Decidualization is guided not just by maternal factors (e.g., estrogen, progesterone, thyroid hormone), but also by molecules secreted by the embryo, such as chorionic gonadotropin (CG) and interleukin-1β (IL-1 β), just to cite few. Once reached the uterine cavity, the embryo orients correctly toward the uterine epithelium, interacts with specialized structures, called pinopodes, and begins the process of adhesion and invasion. All these events are guided by factors secreted by both the endometrium and the embryo, such as leukemia inhibitory factor (LIF), integrins and their ligands, adhesion molecules, Notch family members, and metalloproteinases and their inhibitors. The aim of this review is to give an overview of the factors and mechanisms regulating implantation, with a focus on those involved in the complex crosstalk between the blastocyst and the endometrium.
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Affiliation(s)
- Micol Massimiani
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (M.M.); (V.L.); (F.L.C.)
- Saint Camillus International University of Health Sciences, Via di Sant’Alessandro, 8, 00131 Rome, Italy
| | - Valentina Lacconi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (M.M.); (V.L.); (F.L.C.)
| | - Fabio La Civita
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (M.M.); (V.L.); (F.L.C.)
| | - Carlo Ticconi
- Department of Surgical Sciences, Section of Gynecology and Obstetrics, University Tor Vergata, Via Montpellier, 1, 00133 Rome, Italy;
| | - Rocco Rago
- Physiopathology of Reproduction and Andrology Unit, Sandro Pertini Hospital, Via dei Monti Tiburtini 385/389, 00157 Rome, Italy;
| | - Luisa Campagnolo
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (M.M.); (V.L.); (F.L.C.)
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19
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Abstract
Embryonic signals can affect the spatiotemporal-specific expression of the uterus to establish a successful pregnancy. Our previous study has found that talin1 underwent dynamic changes in the mouse endometrium during peri-implantation period. However, whether talin1 is affected by the embryo signals is not clear. In order to investigate the effect of embryonic signals, especially human chorionic gonadotropin (HCG) on talin1, we have designed mouse models of pseudopregnancy, delayed implantation and activation, and HCG treatment. Using these models, the expression of talin1 in the mouse endometrium was determined by immunohistochemistry and Western blotting. In the pseudopregnancy model, an increased expression of talin1 was found from day 3 to day 5, whereas the talin1 protein was decreased on day 5 in the normal pregnant mice. In the delayed implantation model, a strong cytoplasmic staining of talin1 was found, especially in stromal cells. However, after activation of the implantation, the expression of talin1 decreased (P < .05). Furthermore, a significantly lower expression of talin1 was found at the implantation site when compared to the interimplantation sites (P < .05). In the HCG treatment model, an intrauterine perfusion of 10u HCG significantly reduced the expression of talin1 in both stromal and epithelial cells in pseudopregnant mice (P < .05), although further increase in the HCG concentration did not have additional effect on expression of talin1. Taken together, our data suggest that the presence of embryos can affect expression of talin1 in the mouse endometrium, and a certain concentration of HCG can regulate its expression.
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Affiliation(s)
- Ying Shen
- 1 Department of Reproductive Center, First Affiliated Hospital of Guangxi Medical University, Nanning, China
- 2 Department of Gynecology, Guilin People's Hospital, Guilin, China
| | - Aiping Qin
- 1 Department of Reproductive Center, First Affiliated Hospital of Guangxi Medical University, Nanning, China
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20
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Shan L, Zhou Y, Peng S, Wang X, Shan Z, Teng W. Implantation failure in rats with subclinical hypothyroidism is associated with LIF/STAT3 signaling. Endocr Connect 2019; 8:718-727. [PMID: 31063977 PMCID: PMC6547307 DOI: 10.1530/ec-19-0185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 05/07/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Pregnant women with subclinical hypothyroidism are associated with an increased risk of spontaneous abortion. This study aims to investigate the mechanisms underlying the effects of maternal subclinical hypothyroidism during early pregnancy on abortion in the uterus, focusing upon the LIF/STAT3 signaling pathway. METHODS One hundred five Wistar rats were randomly divided into three groups (35 rats in each group): control (CON) group, subclinical hypothyroidism (SCH) group and overt hypothyroidism (OH) group. We examined the weight of rat uteri, rat placenta and embryos. We also determined the number of implantation sites and the embryo absorption rates. The protein and mRNA expressions of TSHR, TR-α, TR-β, LIFR, gp130, JAK1, p-STAT3 and STAT3 were measured by immunohistochemical staining, real-time PCR and Western blotting. RESULTS The weights of rat uteri, rat placenta and embryos were significantly reduced in the SCH and OH groups. The number of implantation sites was significantly decreased in the SCH and OH groups, while embryo absorption rates were significantly increased. The mRNA and protein expressions of TSHR were upregulated in the SCH and OH groups, while TR-α and TR-β showed no difference when compared between the three groups. The expression levels of LIFR, gp130, JAK1 and p-STAT3 were significantly higher in the SCH and OH groups. CONCLUSIONS Clinical and subclinical hypothyroidism during early pregnancy might cause adverse pregnancy outcomes. Implantation failure in rats with subclinical hypothyroidism was associated with abnormal LIF/STAT3 signaling.
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Affiliation(s)
- Ling Shan
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, People’s Republic of China
- Department of Endocrinology and Metabolism, People's Hospital of Liaoning Province, Shenyang, People’s Republic of China
| | - Yingying Zhou
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Shiqiao Peng
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Xinyi Wang
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, People’s Republic of China
- Department of Laboratory Medical, The First Hospital of China Medical University, Shenyang, People’s Republic of China
| | - Zhongyan Shan
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, People’s Republic of China
- Correspondence should be addressed to Z Shan:
| | - Weiping Teng
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, People’s Republic of China
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21
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Loke H, Rainczuk K, Dimitriadis E. MicroRNA Biogenesis Machinery Is Dysregulated in the Endometrium of Infertile Women Suggesting a Role in Receptivity and Infertility. J Histochem Cytochem 2019; 67:589-599. [PMID: 31145039 DOI: 10.1369/0022155419854064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRs) regulate endometrial function and their dysregulation could underlie unexplained infertility in women. Ribonucleases including DICER and DROSHA, and the proteins, ARGONAUTE 1 (AGO 1) and 2 (AGO 2) regulate the biogenesis/maturation of miRs. We aimed to elucidate the expression and localization of miR biogenesis machinery components during the human menstrual cycle and compare their levels in endometrium from women with normal fertility and primary unexplained infertility. miR biogenesis components were measured by quantitative-RT-PCR and immunohistochemistry. In the endometrium of women with normal fertility, DROSHA immunolocalized maximally to the epithelium during the early and mid-secretory phases compared with the proliferative and late-secretory phases. Stromal DICER immunostaining intensity was higher in the late-secretory phase compared with all other phases in fertile women. DROSHA mRNA was reduced in the mid-secretory-infertile whole endometrial tissue (has all cells of the tissue), and primary epithelial and stromal cells while no differences were found in DICER, AGO1, and AGO2 mRNA. In the luminal epithelium, DROSHA staining intensity was reduced in early and mid-secretory-infertile while DICER staining was reduced in the early secretory-infertile compared with their respective fertile groups. DICER and DROSHA were dynamically regulated across the menstrual cycle and reduced levels during receptivity phase could underlie implantation failure/infertility.
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Affiliation(s)
- Hannah Loke
- Embryo Implantation Laboratory, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Medicine, Monash University, Clayton, Victoria, Australia
| | - Kate Rainczuk
- Embryo Implantation Laboratory, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Medicine, Monash University, Clayton, Victoria, Australia
| | - Evdokia Dimitriadis
- Embryo Implantation Laboratory, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Medicine, Monash University, Clayton, Victoria, Australia.,Department of Obstetrics and Gynaecology, The University of Melbourne, The Royal Women's Hospital, Parkville, Victoria, Australia
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Winship A, Ton A, Van Sinderen M, Menkhorst E, Rainczuk K, Griffiths M, Cuman C, Dimitriadis E. Mouse double minute homologue 2 (MDM2) downregulation by miR-661 impairs human endometrial epithelial cell adhesive capacity. Reprod Fertil Dev 2018; 30:477-486. [PMID: 28847363 DOI: 10.1071/rd17095] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 07/16/2017] [Indexed: 12/11/2022] Open
Abstract
Human blastocysts that fail to implant following IVF secrete elevated levels of miR-661, which is taken up by primary human endometrial epithelial cells (HEECs) and impairs their adhesive capability. MicroRNA miR-661 downregulates mouse double minute homologue 2 (MDM2) and MDM4 in other epithelial cell types to activate p53; however, this has not been examined in the endometrium. In this study MDM2 protein was detected in the luminal epithelium of the endometrium, the site of blastocyst attachment, during the mid secretory receptive phase of the menstrual cycle. The effects of miR-661 on gene expression in and adhesion of endometrial cells was also examined. MiR-661 overexpression consistently downregulated MDM2 but not MDM4 or p53 gene expression in the Ishikawa endometrial epithelial cell line and primary HEEC. Adhesion assays were performed on the real-time monitoring xCELLigence system and by co-culture using Ishikawa cells and HEECs with HTR8/SVneo trophoblast spheroids. Targeted siRNA-mediated knockdown of MDM2 in endometrial epithelial cells reduced Ishikawa cell adhesion (P<0.001) and also reduced HTR8/SVneo trophoblast spheroid adhesion to Ishikawa cells (P<0.05) and HEECs (P<0.05). MDM2 overexpression using recombinant protein treatment resulted in enhanced HTR8/SVneo trophoblast spheroid adhesion to Ishikawa cells (P<0.01) and HEECs (P<0.05). This study highlights a potential new mechanism by which human blastocyst-secreted miR-661 reduces endometrial epithelial cell adhesion; via downregulation of MDM2. These findings suggest that MDM2 contributes to endometrial-blastocyst adhesion, implantation and infertility in women.
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Affiliation(s)
- Amy Winship
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
| | - Amanda Ton
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
| | - Michelle Van Sinderen
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
| | - Ellen Menkhorst
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
| | - Katarzyna Rainczuk
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
| | - Meaghan Griffiths
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
| | - Carly Cuman
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
| | - Evdokia Dimitriadis
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Vic. 3168, Australia
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Van Sinderen M, Oyanedel J, Menkhorst E, Cuman C, Rainczuk K, Winship A, Salamonsen L, Edgell T, Dimitriadis E. Soluble Delta-like ligand 1 alters human endometrial epithelial cell adhesive capacity. Reprod Fertil Dev 2018; 29:694-702. [PMID: 26616664 DOI: 10.1071/rd15313] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 10/23/2015] [Indexed: 01/23/2023] Open
Abstract
The endometrium undergoes substantial morphological and functional changes to become receptive to embryo implantation and to enable establishment of a successful pregnancy. Reduced Delta-like ligand 1 (DLL1, Notch ligand) in the endometrium is associated with infertility. DLL1 can be cleaved by 'a disintegrin and metalloprotease' (ADAM) proteases to produce a soluble ligand that may act to inhibit Notch signalling. We used an enzyme-linked immunosorbent assay to quantify soluble DLL1 in uterine lavages from fertile and infertile women in the secretory phase of the menstrual cycle. We also determined the cellular location and immunostaining intensity of ADAM12 and 17 in human endometrium throughout the cycle. Functional effects of soluble DLL1 in receptivity were analysed using in vitro adhesion and proliferation assays and gene expression analysis of Notch signalling targets. Soluble DLL1 was significantly increased in uterine lavage samples of infertile women compared with fertile women in the secretory phase of the menstrual cycle. This coincided with significantly increased ADAM17 immunostaining detected in the endometrial luminal epithelium in the mid-secretory phase in infertile women. Soluble DLL1 significantly inhibited the adhesive capacity of endometrial epithelial cells via downregulation of helix-loop-helix and hairy/enhancer of split family member HES1 mRNA. Thus, soluble DLL1 may serve as a suitable target or potential biomarker for receptivity.
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Affiliation(s)
- Michelle Van Sinderen
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Jennifer Oyanedel
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Ellen Menkhorst
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Carly Cuman
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Katarzyna Rainczuk
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Amy Winship
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Lois Salamonsen
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Tracey Edgell
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
| | - Evdokia Dimitriadis
- Hudson Institute of Medical Research, 27-31 Wright St, Clayton, Vic. 3168, Australia
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Whitby S, Salamonsen LA, Evans J. The Endometrial Polarity Paradox: Differential Regulation of Polarity Within Secretory-Phase Human Endometrium. Endocrinology 2018; 159:506-518. [PMID: 29029020 DOI: 10.1210/en.2016-1877] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 09/25/2017] [Indexed: 11/19/2022]
Abstract
A major cause of infertility in normal and assisted reproduction cycles is failure of the endometrium to undergo appropriate changes during the secretory phase of the menstrual cycle as it acquires receptivity for an implanting blastocyst. Current dogma states that loss of epithelial polarity in the luminal epithelial cells, the point of first contact between maternal endometrium and blastocyst, may facilitate embryo implantation. Loss of polarity is likely an important change during the secretory phase to overcome mutual repulsion between otherwise polarized epithelial surfaces. Although "plasma membrane transformation" describes morphological/molecular alterations associated with loss of polarity, direct measures of polarity have not been investigated. Transepithelial resistance, a proxy measure of polarity, was downregulated in endometrial epithelial (ECC-1) cells by combined estrogen/progestin, mimicking the hormonal milieu of the secretory phase. Examination of defined polarity markers within human endometrium throughout the menstrual cycle identified downregulation of atypical protein kinase C, Stardust, Crumbs, and Scribble within the luminal-epithelial layer, with upregulation of Scribble within the stromal compartment as the menstrual cycle progressed from the estrogen-dominated proliferative to progesterone-dominated secretory phase. Epithelial (ECC-1) Scribble expression was downregulated in vitro by combined estrogen/progestin and estrogen/progestin/human chorionic gonadotropin treatment, whereas knockdown of Scribble in these cells enhanced "embryo" (trophectodermal spheroid) adhesion. In contrast, Scribble was upregulated within decidualized primary human endometrial stromal cells, with decidualization downregulated upon Scribble knockdown. These data highlight an important contribution of polarity modulation within the human endometrium, likely important for receptivity. Clinical investigations examining how polarity may be modulated in the infertile endometrium may facilitate fertility.
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Affiliation(s)
- Sarah Whitby
- Hudson Institute of Medical Research, Clayton, Victoria, Australia
- Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Lois A Salamonsen
- Hudson Institute of Medical Research, Clayton, Victoria, Australia
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, Victoria, Australia
| | - Jemma Evans
- Hudson Institute of Medical Research, Clayton, Victoria, Australia
- Department of Physiology, Monash University, Clayton, Victoria, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, Victoria, Australia
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25
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Micro-ribonucleic acids and extracellular vesicles repertoire in the spent culture media is altered in women undergoing In Vitro Fertilization. Sci Rep 2017; 7:13525. [PMID: 29051527 PMCID: PMC5648749 DOI: 10.1038/s41598-017-13683-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/27/2017] [Indexed: 12/21/2022] Open
Abstract
MicroRNAs (miRNAs) are class of small RNA molecules with major impact on gene regulation. We analyzed the potential of miRNAs secreted from pre-implantation embryos into the embryonic culture media as biomarkers to predict successful pregnancy. Using microarray analysis, we profiled the miRNome of the 56 spent culture media (SCM) after embryos transfer and found a total of 621 miRNAs in the SCM. On average, we detected 163 miRNAs in SCM of samples with failed pregnancies, but only 149 SCM miRNAs of embryos leading to pregnancies. MiR-634 predicted an embryo transfer leading to a positive pregnancy with an accuracy of 71% and a sensitivity of 85%. Among the 621 miRNAs, 102 (16.4%) showed a differential expression between positive and negative outcome of pregnancy with miR-29c-3p as the most significantly differentially expressed miRNA. The number of extracellular vehicles was lower in SCM with positive outcomes (3.8 × 109/mL EVs), as compared to a negative outcome (7.35 × 109/mL EVs) possibly explaining the reduced number of miRNAs in the SCM associated with failed pregnancies. The analysis of the miRNome in the SCM of couples undergoing fertility treatment lays the ground towards development of biomarkers to predict successful pregnancy and towards understanding the role of embryonic miRNAs found in the SCM.
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Abnormal expression of Nrf2 may play an important role in the pathogenesis and development of adenomyosis. PLoS One 2017; 12:e0182773. [PMID: 28817677 PMCID: PMC5560740 DOI: 10.1371/journal.pone.0182773] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/24/2017] [Indexed: 11/19/2022] Open
Abstract
Objective To explore the expression level of Nrf2 in adenomyosis and study the mechanism of abnormal expression of Nrf2 in the pathogenesis of adenomyosis. Methods Western blot, immunohistochemistry(IHC) and real time PCR were used to measure Nrf2 expression levels in tissue and cell samples. Knockdown and overexpression of Nrf2 were used to investigate the variation of migration ability of endometrial glandular cells as well as the regulatory mechanism. Results Nrf2 protein levels were significantly higher in the eutopic and ectopic endometrial glands when compared with control cases using IHC and western blot methods. (p< 0.05). However, there was no statistical difference in Nrf2 mRNA expression levels between the adenomyosis and control groups. Using an agonist and Nrf2 siRNA, we regulated the Nrf2 protein levels of primary cultured endometrial glandular cells. With increased expression of Nrf2, cell scratch assay showed that the agonist-treated group migrated significantly faster than the control group, with MMP9 protein level markedly elevated. In contrast, Nrf2 siRNA-treated group migrated slower than the control group, with decreased expression of MMP9 protein. All of the scratching healing spaces and protein levels between the treated and control groups were statistically significant (p< 0.05). Conclusions Abnormal expression of Nrf2 may play an important role in the pathogenesis and development of adenomyosis. Specified reduction of Nrf2 expression could prove to be a new therapeutic target in the clinical treatment of adenomyosis.
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27
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Yu M, Wang J, Liu S, Wang X, Yan Q. Novel function of pregnancy-associated plasma protein A: promotes endometrium receptivity by up-regulating N-fucosylation. Sci Rep 2017; 7:5315. [PMID: 28706275 PMCID: PMC5509645 DOI: 10.1038/s41598-017-04735-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 05/19/2017] [Indexed: 12/27/2022] Open
Abstract
Glycosylation of uterine endometrial cells plays important roles to determine their receptive function to blastocysts. Trophoblast-derived pregnancy-associated plasma protein A (PAPPA) is specifically elevated in pregnant women serum, and is known to promote trophoblast cell proliferation and adhesion. However, the relationship between PAPPA and endometrium receptivity, as well as the regulation of N-fucosylation remains unclear. We found that rhPAPPA and PAPPA in the serum samples from pregnant women or conditioned medium of trophoblast cells promoted endometrium receptivity in vitro. Moreover, rhPAPPA increased α1,2-, α1,3- and α1,6-fucosylation levels by up-regulating N-fucosyltransferases FUT1, FUT4 and FUT8 expression, respectively, through IGF-1R/PI3K/Akt signaling pathway in human endometrial cells. Additionally, α1,2-, α1,3- and α1,6-fucosylation of integrin αVβ3, a critical endometrium receptivity biomarker, was up-regulated by PAPPA, thereby enhanced its adhesive functions. Furthermore, PAPPA blockage with antibody inhibited embryo implantation in vivo, mouse embryo adhesion and spreading in vitro, as well as N-fucosylation level of the endometrium in pregnant mice. In summary, this study suggests that PAPPA is essential to maintain a receptive endometrium by up-regulating N-fucosylation, which is a potential useful biomarker to evaluate the receptive functions of the endometrium.
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Affiliation(s)
- Ming Yu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, Dalian, 116044, China
| | - Jiao Wang
- Departmentof Hematology, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Shuai Liu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, Dalian, 116044, China
| | - Xiaoqi Wang
- Departmentof Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Qiu Yan
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, Dalian, 116044, China.
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28
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Kamath MS, Mascarenhas M, Kirubakaran R, Nair R, Kulkarni A. Use of embryo culture supernatant to improve clinical outcomes in assisted reproductive technology: a systematic review and meta-analysis. HUM FERTIL 2017; 21:90-97. [DOI: 10.1080/14647273.2017.1319078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | - Richard Kirubakaran
- Cochrane South Asia, Prof. BV Moses Center for Evidence-Informed Health Care and Health Policy, Christian Medical College, Vellore, India
| | - Raju Nair
- Department of Reproductive Medicine, Matha Hospital, Kottayam, India
| | - Abhijit Kulkarni
- Homerton Fertility Center, Homerton University Hospital, London, UK
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29
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Notch signalling in placental development and gestational diseases. Placenta 2017; 56:65-72. [PMID: 28117145 DOI: 10.1016/j.placenta.2017.01.117] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/09/2017] [Accepted: 01/12/2017] [Indexed: 01/14/2023]
Abstract
Activation of Notch signalling upon cell-cell contact of neighbouring cells controls a plethora of cellular processes such as stem cell maintenance, cell lineage determination, cell proliferation, and survival. Accumulating evidence suggests that the pathway also critically regulates these events during placental development and differentiation. Herein, we summarize our present knowledge about Notch signalling in murine and human placentation and discuss its potential role in the pathophysiology of gestational disorders. Studies in mice suggest that Notch controls trophectoderm formation, decidualization, placental branching morphogenesis and endovascular trophoblast invasion. In humans, the particular signalling cascade promotes formation of the extravillous trophoblast lineage and regulates trophoblast proliferation, survival and differentiation. Expression patterns as well as functional analyses indicate distinct roles of Notch receptors in different trophoblast subtypes. Altered effects of Notch signalling have been detected in choriocarcinoma cells, consistent with its role in cancer development and progression. Moreover, deregulation of Notch signalling components were observed in pregnancy disorders such as preeclampsia and fetal growth restriction. In summary, Notch plays fundamental roles in different developmental processes of the placenta. Abnormal signalling through this pathway could contribute to the pathogenesis of gestational diseases with aberrant placentation and trophoblast function.
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30
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Evans J, Salamonsen LA, Winship A, Menkhorst E, Nie G, Gargett CE, Dimitriadis E. Fertile ground: human endometrial programming and lessons in health and disease. Nat Rev Endocrinol 2016; 12:654-667. [PMID: 27448058 DOI: 10.1038/nrendo.2016.116] [Citation(s) in RCA: 194] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The human endometrium is a highly dynamic tissue that is cyclically shed, repaired, regenerated and remodelled, primarily under the orchestration of oestrogen and progesterone, in preparation for embryo implantation. Humans are among the very few species that menstruate and that, consequently, are equipped with unique cellular and molecular mechanisms controlling these cyclic processes. Many reproductive pathologies are specific to menstruating species, and studies in animal models rarely translate to humans. Abnormal remodelling and regeneration of the human endometrium leads to a range of reproductive complications. Furthermore, the processes regulating endometrial remodelling and implantation, including those controlling hormonal impact, breakdown and repair, stem/progenitor cell activation, inflammation and cell invasion have broad applications to other fields. This Review presents current knowledge regarding the normal and abnormal function of the human endometrium. The development of biomarkers for prediction of uterine diseases and pregnancy disorders and future avenues of investigation to improve fertility and enhance endometrial function are also discussed.
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Affiliation(s)
- Jemma Evans
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Physiology, Monash University, Clayton, 3800, Australia
| | - Lois A Salamonsen
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Obstetrics and Gynaecology, Monash University, Clayton, 3800, Australia
| | - Amy Winship
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
| | - Ellen Menkhorst
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
| | - Guiying Nie
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Australia
| | - Caroline E Gargett
- Department of Obstetrics and Gynaecology, Monash University, Clayton, 3800, Australia
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, 3168, Australia
| | - Eva Dimitriadis
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Anatomy and Developmental Biology, Monash University, Clayton, 3800, Australia
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31
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Ashshi AM. Aberrant expression of interleukin-6 and its receptor in Fallopian tubes bearing an ectopic pregnancy with and without tubal cytomegalovirus infection. Virusdisease 2016; 27:340-350. [PMID: 28004013 DOI: 10.1007/s13337-016-0342-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 08/22/2016] [Indexed: 01/02/2023] Open
Abstract
Cytomegalovirus (CMV) has recently been suggested as a potential risk factor for the development of ectopic pregnancy (EP) following upper genital tract infection in women. However, little is known about its associated underlying pathogenic mechanisms. This was a prospective case-control study that measured the prevalence of CMV infection in Fallopian tubes (FT) bearing an EP and its effects on the tubal expression of interleukin (IL)-6 and its signaling molecules, which are known to play significant roles in the immune response against CMV infection as well as embryo implantation. Fresh FTs from 96 EPs during salpingectomy and another 61 women at the midluteal phase during total abdominal hysterectomy (TAH) were collected to measure the rate of CMV by an IVD CE PCR kit. The participants were then classified to measure the expression of IL-6, its receptor (IL6R) and intracellular mediators (gp-130, STAT3) by immunohistochemistry and quantitative RT-PCR. The results showed significantly higher (P = 0.01) rates of CMV in FTs obtained from EP (22.9 %) compared with controls (8.2 %). IL-6 (P = 0.003), IL6Rα (P = 0.02), gp 130 (P = 0.008) and STAT3 (P = 0.03) were significantly higher in TAH-positive (n = 5) compared with TAH-negative FTs by immunohistochemistry. Furthermore, the expression in the non-infected EP samples was significantly higher for IL-6 (P = 0.004), IL6R (P = 0.007), gp130 (P = 0.006) and STAT3 (P = 0.007) compared with negative TAH. Similar results were observed by quantitative PCR. CMV-positive EP samples showed the highest significant increase of the studied molecules by all techniques. In conclusion, Fallopian tubal infection with CMV is higher in EP and could predispose to embryo implantation by up-regulating the expression of IL-6 and its related molecules as part of tubal innate immune response. Further in vitro and in vivo studies are compulsory to illustrate the roles of IL-6 and CMV in the pathogenesis of EP.
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Affiliation(s)
- Ahmed Mohamed Ashshi
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Al Abdeyah, Holy Makkah, PO Box 7607, Makkah, Kingdom of Saudi Arabia
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32
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Refaat B, Ashshi AM, Batwa SA, Ahmad J, Idris S, Kutbi SY, Malibary FA, Kamfar FF. The prevalence of Chlamydia trachomatis and Mycoplasma genitalium tubal infections and their effects on the expression of IL-6 and leukaemia inhibitory factor in Fallopian tubes with and without an ectopic pregnancy. Innate Immun 2016; 22:534-45. [PMID: 27511901 DOI: 10.1177/1753425916662326] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 07/12/2016] [Indexed: 11/16/2022] Open
Abstract
This was a prospective case-control study that measured the prevalence of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Mycoplasma genitalium (MG) by an IVD CE multiplex PCR kit in fresh Fallopian tubes (FT) obtained from 96 ectopic pregnancies (EP) and 61 controls in the midluteal phase of the cycle. We later measured the expression profile of IL-6, leukaemia inhibitory factor (LIF) and their signalling molecules, in respect to the type and number of infections, by immunohistochemistry, ELISA and quantitative RT-PCR. The frequencies of CT, and MG mono- and co-infections were significantly higher in EP. IL-6, LIF, their receptors and intracellular mediators were significantly up-regulated at the gene and protein levels in positive compared with negative FTs within each group (P < 0.05). EP tubal samples with co-infections showed the highest significant expression of the candidate cytokines by all techniques (P < 0.05). CT and MG are frequent in EP and up-regulate the tubal expression of IL-6, LIF and their signalling molecules. Both cytokines could be involved in the tubal immune response against bacterial infections, as well as the pathogenesis of EP. Further studies are needed to explore the roles of IL-6 family in infection-induced tubal inflammation and EP.
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Affiliation(s)
- Bassem Refaat
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Al Abdeyah, Makkah, KSA
| | - Ahmed Mohamed Ashshi
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Al Abdeyah, Makkah, KSA
| | - Sarah Abdullah Batwa
- Obstertics and Gynaecology Department, Maternity and Children Hospital, Al-Aziziyah, Ministry of Health, Jeddah, KSA
| | - Jawwad Ahmad
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Al Abdeyah, Makkah, KSA
| | - Shakir Idris
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Al Abdeyah, Makkah, KSA
| | - Seham Yahia Kutbi
- Obstertics and Gynaecology Department, Maternity and Children Hospital, Al-Aziziyah, Ministry of Health, Jeddah, KSA
| | - Faizah Ahmed Malibary
- Obstertics and Gynaecology Department, Maternity and Children Hospital, Al-Aziziyah, Ministry of Health, Jeddah, KSA
| | - Fadi Fayez Kamfar
- Pathology Department, Clinical Laboratories, Maternity and Children Hospital, Ministry of Health, Makkah, KSA
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33
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Winship AL, Rainczuk K, Ton A, Dimitriadis E. Fibulin-5 localisation in human endometrial cancer shifts from epithelial to stromal with increasing tumour grade, and silencing promotes endometrial epithelial cancer cell proliferation. Oncol Lett 2016; 12:651-657. [PMID: 27347195 DOI: 10.3892/ol.2016.4650] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 04/15/2016] [Indexed: 11/05/2022] Open
Abstract
Endometrial cancer is the most common invasive gynaecological malignancy. While endocrine, genetic and inflammatory factors are thought to contribute to its pathogenesis, its precise etiology and molecular regulators remain poorly understood. Fibulin-5 is an extracellular matrix (ECM) protein that inhibits cell growth and invasion in several cancer cell types and is downregulated in a number of types of human cancer. However, it is unknown whether fibulin-5 plays a role in endometrial tumourigenesis. In the current report, the expression and localisation of fibulin-5 in type I endometrioid human endometrial cancers of grades (G) 1-3 was investigated using reverse transcription-quantitative polymerase chain reaction and immunohistochemistry. Fibulin-5 mRNA was found to be significantly reduced in whole tumour tissues from women across G1-3 compared with benign endometrium (P<0.0001). Consistently, fibulin-5 protein was also reduced in the tumour epithelial compartment across increasing tumour grades. By contrast, increased protein localisation to the tumour stroma was observed with increasing grade. Knockdown by small interfering RNA in Ishikawa endometrial epithelial cancer cells expressing fibulin-5 stimulated cell adhesion and proliferation in vitro. Fibulin-5 mRNA expression in Ishikawa cells was induced by transforming growth factor-β and fibulin-5 in turn activated extracellular signal-regulated kinases (ERK1/2), suggesting that it may act via the mitogen-activated protein kinase pathway. In summary, the present study identified fibulin-5 as a downregulated ECM gene in human endometrial cancer and observed a shift from epithelial to stromal protein localisation with increasing tumour grade in women. These data suggest that loss of fibulin-5 function may promote endometrial cancer progression by enhancing epithelial cell adhesion and proliferation.
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Affiliation(s)
- Amy Louise Winship
- Centre for Reproductive Health, The Hudson Institute of Medical Research, Melbourne, Victoria 3168, Australia; Department of Molecular and Translational Medicine, Monash University, Melbourne, Victoria 3800, Australia; Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria 3800, Australia
| | - Kate Rainczuk
- Centre for Reproductive Health, The Hudson Institute of Medical Research, Melbourne, Victoria 3168, Australia; Department of Molecular and Translational Medicine, Monash University, Melbourne, Victoria 3800, Australia
| | - Amanda Ton
- Centre for Reproductive Health, The Hudson Institute of Medical Research, Melbourne, Victoria 3168, Australia; Department of Molecular and Translational Medicine, Monash University, Melbourne, Victoria 3800, Australia
| | - Eva Dimitriadis
- Centre for Reproductive Health, The Hudson Institute of Medical Research, Melbourne, Victoria 3168, Australia; Department of Molecular and Translational Medicine, Monash University, Melbourne, Victoria 3800, Australia; Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria 3800, Australia
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34
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Preimplantation embryo-secreted factors modulate maternal gene expression in rat uterus. Cell Tissue Res 2015; 364:453-63. [PMID: 26685865 DOI: 10.1007/s00441-015-2336-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 11/20/2015] [Indexed: 01/05/2023]
Abstract
In mammalian reproduction, embryo implantation into the uterus is spatiotemporally regulated by a complex process triggered by a number of factors. Although previous studies have suggested that uterine receptivity is mediated by blastocyst-derived factors, specific functions of embryos remain to be defined during preimplantation. Therefore, the present study was conducted to identify the maternal genes regulated by embryo-secreted factors in the rat uterus. RNA-sequencing (RNA-seq) data revealed that 10 genes are up-regulated in the delayed implantation uterus compared with the pseudopregnancy uterus. The RNA-seq results were further verified by real-time quantitative polymerase chain reaction. Sulf1 expression is significantly (P < 0.05) induced in the delayed implantation uterus, although Areg, Calca, Fxyd4 and Lamc3 show a definite but non-statistically significant increase in their expression levels. During early pregnancy, the levels of Areg, Calca, Fxyd4, Lamc3 and Sulf1 expression at 3.5 days post coitus (dpc) are significantly (P < 0.05) higher than those at 1.5 dpc. Treatment with embryo-conditioned media revealed that Lamc3 and Sulf1 are up-regulated compared with the other genes studied. Thus, embryo-derived factors regulate maternal gene expression, with Lamc3 and Sulf1 possibly being suitable markers for a response study of embryo-secreted factors to improve our understanding of embryo-maternal communication.
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Human Blastocyst Secreted microRNA Regulate Endometrial Epithelial Cell Adhesion. EBioMedicine 2015; 2:1528-35. [PMID: 26629549 PMCID: PMC4634783 DOI: 10.1016/j.ebiom.2015.09.003] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 08/20/2015] [Accepted: 09/02/2015] [Indexed: 12/24/2022] Open
Abstract
Successful embryo implantation requires synchronous development and communication between the blastocyst and the endometrium, however the mechanisms of communication in humans are virtually unknown. Recent studies have revealed that microRNAs (miRs) are present in bodily fluids and secreted by cells in culture. We have identified that human blastocysts differentially secrete miRs in a pattern associated with their implantation outcome. miR-661 was the most highly expressed miR in blastocyst culture media (BCM) from blastocysts that failed to implant (non-implanted) compared to blastocysts that implanted (implanted). Our results indicate a possible role for Argonaute 1 in the transport of miR-661 in non-implanted BCM and taken up by primary human endometrial epithelial cells (HEECs). miR-661 uptake by HEEC reduced trophoblast cell line spheroid attachment to HEEC via PVRL1. Our results suggest that human blastocysts alter the endometrial epithelial adhesion, the initiating event of implantation, via the secretion of miR, abnormalities in which result in implantation failure. microRNAs are secreted by human blastocysts relative to implantation potential during IVF. microRNA-661 is secreted by blastocysts that fail to implant and taken up by endometrial epithelial cells via Argonaute 1. microRNA-661 reduces adhesion of trophoblast spheroids to endometrial cells.
Implantation failure is a large problem affecting the success rate of in vitro fertilisation (IVF). There are no effective treatments for implantation failure. Our study demonstrated that human embryos secrete microRNA and their expression is differentially expressed in embryos that achieve a successful pregnancy compared to embryos that fail. The study identified that microRNA 661 secreted by embryos, was taken up by human endometrial epithelial cells via attachment to a protein and inhibited endometrial cell adhesiveness. This suggests that abnormally produced microRNA may prevent attachment of human embryos to the endometrial lining and prevent implantation and pregnancy.
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Würfel W. Der frühe Embryo. GYNAKOLOGISCHE ENDOKRINOLOGIE 2015. [DOI: 10.1007/s10304-015-0002-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Localisation of the Notch family in the human endometrium of fertile and infertile women. J Mol Histol 2014; 45:697-706. [DOI: 10.1007/s10735-014-9587-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 07/08/2014] [Indexed: 10/25/2022]
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Colicchia M, Campagnolo L, Baldini E, Ulisse S, Valensise H, Moretti C. Molecular basis of thyrotropin and thyroid hormone action during implantation and early development. Hum Reprod Update 2014; 20:884-904. [PMID: 24943836 DOI: 10.1093/humupd/dmu028] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Implantation and early embryo development are finely regulated processes in which several molecules are involved. Evidence that thyroid hormones (TH: T4 and T3) might be part of this machinery is emerging. An increased demand for TH occurs during gestation, and any alteration in maternal thyroid physiology has significant implications for both maternal and fetal health. Not only overt but also subclinical hypothyroidism is associated with infertility as well as with obstetric complications, including disruptions and disorders of pregnancy, labor, delivery, and troubles in early neonatal life. METHODS We searched the PubMed and Google Scholar databases for articles related to TH action on ovary, endometrium, trophoblast maturation and embryo implantation. In addition, articles on the regulation of TH activity at cellular level have been reviewed. The findings are hereby summarized and critically discussed. RESULTS TH have been shown to influence endometrial, ovarian and placental physiology. TH receptors (TR) and thyrotropin (thyroid-stimulating hormone: TSH) receptors (TSHR) are widely expressed in the feto-maternal unit during implantation, and both the endometrium and the trophoblast might be influenced by TH either directly or through TH effects on the synthesis and activity of implantation-mediating molecules. Interestingly, due to the multiplicity of mechanisms involved in TH action (e.g. differential expression of TR isoforms, heterodimeric receptor partners, interacting cellular proteins, and regulating enzymes), the TH concentration in blood is not always predictive of their cellular availability and activity at both genomic and nongenomic level. CONCLUSIONS In addition to the known role of TH on the hormonal milieu of the ovarian follicle cycle, which is essential for a woman's fertility, evidence is emerging on the importance of TH signaling during implantation and early pregnancy. Based on recent observations, a local action of TH on female reproductive organs and the embryo during implantation appears to be crucial for a successful pregnancy. Furthermore, an imbalance in the spatio-temporal expression of factors involved in TH activity might induce early arrest of pregnancy in women considered as euthyroid, based on their hormonal blood concentration. In conclusion, alterations of the highly regulated local activity of TH may play a crucial, previously underestimated, role in early pregnancy and pregnancy loss. Further studies elucidating this topic should be encouraged.
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Affiliation(s)
- Martina Colicchia
- Department of Systems' Medicine, University of Rome Tor Vergata, UOC of Endocrinology and Diabetes, Section of Reproductive Endocrinology Fatebenefratelli Hospital, 'Isola Tiberina' 00187, Rome, Italy
| | - Luisa Campagnolo
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier1, 00133 Rome, Italy
| | - Enke Baldini
- Department of Experimental Medicine, 'Sapienza' University of Rome, Rome, Italy
| | - Salvatore Ulisse
- Department of Experimental Medicine, 'Sapienza' University of Rome, Rome, Italy
| | - Herbert Valensise
- Department of Obstetrics and Gynaecology, University of Rome Tor Vergata, Fatebenefratelli Hospital 'Isola Tiberina', 00187 Rome, Italy
| | - Costanzo Moretti
- Department of Systems' Medicine, University of Rome Tor Vergata, UOC of Endocrinology and Diabetes, Section of Reproductive Endocrinology Fatebenefratelli Hospital, 'Isola Tiberina' 00187, Rome, Italy
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Cuman C, Menkhorst E, Winship A, Van Sinderen M, Osianlis T, Rombauts LJ, Dimitriadis E. Fetal–maternal communication: the role of Notch signalling in embryo implantation. Reproduction 2014; 147:R75-86. [DOI: 10.1530/rep-13-0474] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The establishment of a successful pregnancy requires the implantation of a competent blastocyst into a ‘receptive’ endometrium, facilitating the formation of a functional placenta. Inadequate or inappropriate implantation and placentation is a major reason for infertility and is thought to lead to first-trimester miscarriage, placental insufficiency and other obstetric complications. Blastocyst–endometrial interactions are critical for implantation and placental formation. The Notch signalling family is a receptor–ligand family that regulates cellular processes as diverse as proliferation, apoptosis, differentiation, invasion and adhesion. Notch signalling is achieved via cell–cell interaction; thus, via Notch, cells can have direct effects on the fate of their neighbours. Recently, a number of studies have identified Notch receptors and ligands in the endometrium, blastocyst and placenta. This review collates current knowledge of this large receptor–ligand family and explores the role of Notch signalling during implantation and placentation, drawing on information from both human and animal studies. Overall, the evidence suggests that Notch signalling is a critical component of fetal–maternal communication during implantation and placentation and that abnormal Notch expression is associated with impaired placentation and pre-eclampsia.
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Menkhorst E, Gamage T, Cuman C, Kaitu'u-Lino T, Tong S, Dimitriadis E. Galectin-7 acts as an adhesion molecule during implantation and increased expression is associated with miscarriage. Placenta 2014; 35:195-201. [DOI: 10.1016/j.placenta.2014.01.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 01/10/2014] [Accepted: 01/14/2014] [Indexed: 11/25/2022]
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Van Sinderen M, Cuman C, Winship A, Menkhorst E, Dimitriadis E. The chrondroitin sulfate proteoglycan (CSPG4) regulates human trophoblast function. Placenta 2013; 34:907-12. [PMID: 23953863 DOI: 10.1016/j.placenta.2013.07.065] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/19/2013] [Accepted: 07/23/2013] [Indexed: 01/27/2023]
Abstract
INTRODUCTION Trophoblast growth and invasion of the uterine endometrium are critical events during placentation and are tightly regulated by locally produced factors. Abnormal placentation can result in early miscarriage or preeclampsia and intrauterine growth restriction, leading to impaired fetal and/or maternal health. Chondroitin sulfate proteoglycan 4 (CSPG4) is involved in cancer cell migration and invasion, processes which are critical during placentation but unlike in cancer, trophoblast invasion is highly regulated. CSPG4 expression and function in trophoblast is unknown. We determined CSPG4 expression in human first trimester placenta and implantation sites, and investigated whether CSPG4 influenced proliferation, migration and invasion of a human extravillous trophoblast (EVT) cell line (HTR8/SVneo cells) as a model for extravillous trophoblast (EVT). METHODS AND RESULTS Immunoreactive CSPG4 localized to EVT cells in the trophoblast shell, subpopulations of interstitial EVT cells within the decidua and cytotrophoblast cells in placental villi. In HTR8/SVneo cells, siRNA knockdown of CSPG4 stimulated proliferation and decreased migration/invasion. In primary first trimester placental villi explants two cytokines, interleukin 11 (IL11) and leukemia inhibitory factor (LIF) with known roles in trophoblast function, stimulated CSPG4 mRNA expression and immunoreactive protein in the cyotrophoblast. DISCUSSION AND CONCLUSION This is the first demonstration of the production and function of CSPG4 in human placentation. These data suggest that locally produced CSPG4 stimulates human EVT migration and invasion and suggests that IL11 and LIF regulate villous cytotrophoblast differentiation towards the invasive phenotype at least in part via CSPG4.
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Affiliation(s)
- M Van Sinderen
- Prince Henry's Institute of Medical Research, Clayton, Victoria 3168, Australia
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