1
|
Poh QH, Rai A, Pangestu M, Salamonsen LA, Greening DW. Rapid generation of functional nanovesicles from human trophectodermal cells for embryo attachment and outgrowth. Proteomics 2024; 24:e2300056. [PMID: 37698557 DOI: 10.1002/pmic.202300056] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/09/2023] [Accepted: 08/28/2023] [Indexed: 09/13/2023]
Abstract
Extracellular vesicles (EVs) are important mediators of embryo attachment and outgrowth critical for successful implantation. While EVs have garnered immense interest in their therapeutic potential in assisted reproductive technology by improving implantation success, their large-scale generation remains a major challenge. Here, we report a rapid and scalable production of nanovesicles (NVs) directly from human trophectoderm cells (hTSCs) via serial mechanical extrusion of cells; these NVs can be generated in approximately 6 h with a 20-fold higher yield than EVs isolated from culture medium of the same number of cells. NVs display similar biophysical traits (morphologically intact, spherical, 90-130 nm) to EVs, and are laden with hallmark players of implantation that include cell-matrix adhesion and extracellular matrix organisation proteins (ITGA2/V, ITGB1, MFGE8) and antioxidative regulators (PRDX1, SOD2). Functionally, NVs are readily taken up by low-receptive endometrial HEC1A cells and reprogram their proteome towards a receptive phenotype that support hTSC spheroid attachment. Moreover, a single dose treatment with NVs significantly enhanced adhesion and spreading of mouse embryo trophoblast on fibronectin matrix. Thus, we demonstrate the functional potential of NVs in enhancing embryo implantation and highlight their rapid and scalable generation, amenable to clinical utility.
Collapse
Affiliation(s)
- Qi Hui Poh
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia
- Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, Victoria, Australia
- Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia
| | - Alin Rai
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia
- Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia
- Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Mulyoto Pangestu
- Education Program in Reproduction and Development (EPRD), Department of Obstetrics and Gynaecology, Monash Clinical School, Monash University, Clayton, Victoria, Australia
| | - Lois A Salamonsen
- Hudson Institute of Medical Research and Monash University, Clayton, Victoria, Australia
| | - David W Greening
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia
- Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, Victoria, Australia
- Department of Cardiovascular Research, Translation and Implementation, La Trobe University, Melbourne, Victoria, Australia
- Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| |
Collapse
|
2
|
Ruiz-Alonso M, Valbuena D, Gomez C, Cuzzi J, Simon C. Endometrial Receptivity Analysis (ERA): data versus opinions. Hum Reprod Open 2021; 2021:hoab011. [PMID: 33880420 PMCID: PMC8045472 DOI: 10.1093/hropen/hoab011] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Indexed: 12/14/2022] Open
Abstract
This article summarises and contextualises the accumulated basic and clinical data on the ERA test and addresses specific comments and opinions presented by the opponent as part of an invited debate. Progress in medicine depends on new technologies and concepts that translate to practice to solve long-standing problems. In a key example, combining RNA sequencing data (transcriptomics) with artificial intelligence (AI) led to a clinical revolution in personalising disease diagnosis and fostered the concept of precision medicine. The reproductive field is no exception. Translation of endometrial transcriptomics to the clinic yielded an objective definition of the limited time period during which the maternal endometrium is receptive to an embryo, known as the window of implantation (WOI). The WOI is induced by the presence of exogenous and/or endogenous progesterone (P) after proper oestradiol (E2) priming. The window lasts 30-36 hours and, depending on the patient, occurs between LH + 6 and LH + 9 in natural cycles or between P + 4 and P + 7 in hormonal replacement therapy (HRT) cycles. In approximately 30% of IVF cycles in which embryo transfer is performed blindly, the WOI is displaced and embryo-endometrial synchrony is not achieved. Extending this application of endometrial transcriptomics, the endometrial receptivity analysis (ERA) test couples next-generation sequencing (NGS) to a computational predictor to identify transcriptomic signatures for each endometrial stage: proliferative (PRO), pre-receptive (PRE), receptive (R) and post-receptive (POST). In this way, personalised embryo transfer (pET) may be possible by synchronising embryo transfer with each patient's WOI. Data are the only way to confront arguments sustained in opinions and/or misleading concepts; it is up to the reader to make their own conclusions regarding its clinical utility.
Collapse
Affiliation(s)
- Maria Ruiz-Alonso
- Igenomix Foundation-INCLIVA, Valencia, Spain
- Igenomix SL, Valencia, Spain
| | - Diana Valbuena
- Igenomix Foundation-INCLIVA, Valencia, Spain
- Igenomix SL, Valencia, Spain
| | | | | | - Carlos Simon
- Igenomix Foundation-INCLIVA, Valencia, Spain
- Department of Pediatrics, Obstetrics & Gynecology, University of Valencia, Valencia, Spain
- Department of Obstetrics and Gynecology, BIMDC, Harvard University, Boston, MA, USA
| |
Collapse
|
3
|
Messaoudi S, El Kasmi I, Bourdiec A, Crespo K, Bissonnette L, Le Saint C, Bissonnette F, Kadoch IJ. 15 years of transcriptomic analysis on endometrial receptivity: what have we learnt? FERTILITY RESEARCH AND PRACTICE 2019; 5:9. [PMID: 31396393 PMCID: PMC6681490 DOI: 10.1186/s40738-019-0059-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 07/05/2019] [Indexed: 01/25/2023]
Affiliation(s)
| | | | | | | | | | | | - François Bissonnette
- Ovo r&d, Montreal, Quebec Canada.,2Department of Obstetrics and Gynecology, University of Montreal Hospital Centre, Montreal, Quebec Canada
| | - Isaac-Jacques Kadoch
- Ovo r&d, Montreal, Quebec Canada.,2Department of Obstetrics and Gynecology, University of Montreal Hospital Centre, Montreal, Quebec Canada
| |
Collapse
|
4
|
Aberkane A, Essahib W, Spits C, De Paepe C, Sermon K, Adriaenssens T, Mackens S, Tournaye H, Brosens JJ, Van de Velde H. Expression of adhesion and extracellular matrix genes in human blastocysts upon attachment in a 2D co-culture system. Mol Hum Reprod 2019; 24:375-387. [PMID: 29846687 DOI: 10.1093/molehr/gay024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 05/25/2018] [Indexed: 12/15/2022] Open
Abstract
STUDY QUESTION What are the changes in human embryos, in terms of morphology and gene expression, upon attachment to endometrial epithelial cells? SUMMARY ANSWER Apposition and adhesion of human blastocysts to endometrial epithelial cells are predominantly initiated at the embryonic pole and these steps are associated with changes in expression of adhesion and extracellular matrix (ECM) genes in the embryo. WHAT IS KNOWN ALREADY Both human and murine embryos have been co-cultured with Ishikawa cells, although embryonic gene expression associated with attachment has not yet been investigated in an in vitro implantation model. STUDY DESIGN, SIZE, DURATION Vitrified human blastocysts were warmed and co-cultured for up to 48 h with Ishikawa cells, a model cell line for receptive endometrial epithelium. PARTICIPANTS/MATERIALS, SETTING, METHODS Six days post-fertilization (6dpf) human embryos were co-cultured with Ishikawa cells for 12, 24 (7dpf) or 48 h (8dpf) and attachment rate and morphological development investigated. Expression of 84 adhesion and ECM genes was analysed by quantitative PCR. Immunofluorescence microscopy was used to assess the expression of three informative genes at the protein level. Data are reported on 145 human embryos. Mann-Whitney U was used for statistical analysis between two groups, with P < 0.05 considered significant. MAIN RESULTS AND THE ROLE OF CHANCE The majority of embryos attached to Ishikawa cells at the level of the polar trophectoderm; 41% of co-cultured embryos were loosely attached after 12 h and 86% firmly attached after 24 h. Outgrowth of hCG-positive embryonic cells at 8dpf indicated differentiation of trophectoderm into invasive syncytiotrophoblast. Gene expression analysis was performed on loosely attached and unattached embryos co-cultured with Ishikawa cells for 12 h. In contrast to unattached embryos, loosely attached embryos expressed THBS1, TNC, COL12A1, CTNND2, ITGA3, ITGAV and LAMA3 and had significantly higher CD44 and TIMP1 transcript levels (P = 0.014 and P = 0.029, respectively). LAMA3, THBS1 and TNC expressions were validated at the protein level in firmly attached 7dpf embryos. Thrombospondin 1 (THBS1) resided in the cytoplasm of embryonic cells whereas laminin subunit alpha 3 (LAMA3) and tenascin C (TNC) were expressed on the cell surface of trophectoderm cells. Incubation with a neutralizing TNC antibody did not affect the rate of embryo attachment or hCG secretion. LARGE SCALE DATA None. LIMITATIONS, REASONS FOR CAUTION This in vitro study made use of an endometrial adenocarcinoma cell line to mimic receptive luminal epithelium. Also, the number of embryos was limited. Contamination of recovered embryos with Ishikawa cells was unlikely based on their differential gene expression profiles. WIDER IMPLICATIONS OF THE FINDINGS Taken together, we provide a 'proof of concept' that initiation of the implantation process coincides with the induction of specific embryonic genes. Genome-wide expression profiling of a larger sample set may provide insights into the molecular embryonic pathways underlying successful or failed implantation. STUDY FUNDING AND COMPETING INTEREST(S) A.A. was supported by a grant from the 'Instituut voor Innovatie door Wetenschap en Technologie' (IWT, 121716, Flanders, Belgium). This work was supported by the 'Wetenschappelijk Fonds Willy Gepts' (WFWG G142 and G170, Universitair Ziekenhuis Brussel). The authors declare no conflict of interest.
Collapse
Affiliation(s)
- A Aberkane
- Research Group Reproduction and Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - W Essahib
- Research Group Reproduction and Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - C Spits
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, Brussels, Belgium
| | - C De Paepe
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, Brussels, Belgium
| | - K Sermon
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, Brussels, Belgium
| | - T Adriaenssens
- Research Group Follicle Biology, Vrije Universiteit Brussel, Brussels, Belgium
| | - S Mackens
- Research Group Reproduction and Immunology, Vrije Universiteit Brussel, Brussels, Belgium.,Centre for Reproductive Medicine, Brussels University Hospital, Brussels, Belgium
| | - H Tournaye
- Centre for Reproductive Medicine, Brussels University Hospital, Brussels, Belgium
| | - J J Brosens
- Division of Biomedical Sciences, Clinical Science Research Laboratories, Warwick Medical School, University of Warwick, Coventry, UK.,Tommy's National Centre for Miscarriage Research, University Hospitals Coventry & Warwickshire, Coventry CV2 2DX, UK
| | - H Van de Velde
- Research Group Reproduction and Immunology, Vrije Universiteit Brussel, Brussels, Belgium.,Centre for Reproductive Medicine, Brussels University Hospital, Brussels, Belgium
| |
Collapse
|
5
|
Herington JL, Guo Y, Reese J, Paria BC. Gene profiling the window of implantation: Microarray analyses from human and rodent models. ACTA ACUST UNITED AC 2016; 2:S19-S25. [PMID: 28239559 DOI: 10.1016/j.jrhm.2016.11.006] [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] [Indexed: 10/20/2022]
Abstract
Poor uterine receptivity leads to implantation defects or failure. Identification of uterine molecules crucial to uterine receptivity and/or embryo implantation provides the opportunity to design a diagnostic screening toolkit for uterine receptivity or targeted drug discovery for treating implantation-based infertility. In this regard, gene-profiling studies performed in humans and rodents have identified numerous genes involved in the transcriptional regulation of uterine receptivity and embryo implantation. In this article, we compared available uterine microarray datasets collected during the time of uterine receptivity and implantation in humans, mice and hamsters to uncover conserved gene sets. We also compared the transcriptome signature of women with unexplained infertility (UIF) and recurrent implantation failure (RIF) to gain insight into genes potentially dysregulated during endometrial receptivity or embryo implantation. Among numerous differentially expressed genes, few were revealed that might have molecular diagnostic screening potential for identifying the uterine receptive state during the time of implantation. Finally, functional annotation of gene sets uncovered altered uterine apoptosis or cell adhesion pathways in women with UIF and RIF, respectively. These conserved or divergent gene sets provide insights into the uterine receptive state for supporting blastocyst implantation.
Collapse
Affiliation(s)
- Jennifer L Herington
- Division of Neonatology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Yan Guo
- Department of Cancer Biology and Vanderbilt Technologies for Advanced Genomics Analysis and Research Design, Vanderbilt University, Nashville, TN 37232, USA
| | - Jeff Reese
- Division of Neonatology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Bibhash C Paria
- Division of Neonatology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| |
Collapse
|
6
|
Mascarenhas M, Kamath MS, Chandy A, Kunjummen AT. Progesterone/Estradiol Ratio as a Predictor in the ART Cycles with Premature Progesterone Elevation on the Day of hCG Trigger. J Reprod Infertil 2015; 16:155-61. [PMID: 26913234 DOI: pmid/26913234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND The purpose of the study was to evaluate the role of Progesterone/ Estradiol (P4/E2) ratio as a predictive tool for clinical pregnancy in ART cycles with a premature progesterone rise of >1.5 ng/ml on the day of human chorionic gonadotropin (hCG) trigger. METHODS Retrospective analysis was done on 569 fresh embryo transfer cycles from January 2011 to December 2012 at the infertility unit of a tertiary care hospital. Age, BMI, number of cycles and number of clinical pregnancies have been considered. RESULTS The overall clinical pregnancy rate per embryo transfer was 42.8% (244/569). The clinical pregnancy rate in the 36 cycles with progesterone (P4) level >1.5 ng/ml was significantly lower than the 533 cycles with normal p4 ≤1.5 ng/ml (22.2% vs. 44.2%; p=0.0092). The 36 cycles with progesterone level >1.5 ng/ml were divided into subgroups of P4/E2 >1 (n=20) and P4/E2 ≤1 (n=16). The 20 cycles with P4/E2 >1 and P4 >1.5 ng/ml had a significantly lower pregnancy rate than the cycles with P4 ≤1.5 ng/ml (15% vs. 42.8%; p=0.0103). The 15 cycles with P4/E2 ≤1 and P4 >1.5 ng/ml had a similar pregnancy rate as the cycles with P4 ≤1.5 ng/ml. CONCLUSION A premature progesterone elevation in ART cycles is possibly associated with lower clinical pregnancy rates; this adverse impact of elevated progesterone seems to be limited mainly to a subgroup with an elevated P4/E2 ratio >1.
Collapse
Affiliation(s)
| | | | - Achamma Chandy
- - Reproductive Medicine Unit, Christian Medical College, Vellore, India
| | | |
Collapse
|
7
|
Gómez E, Ruíz-Alonso M, Miravet J, Simón C. Human Endometrial Transcriptomics: Implications for Embryonic Implantation. Cold Spring Harb Perspect Med 2015; 5:a022996. [PMID: 25818663 PMCID: PMC4484960 DOI: 10.1101/cshperspect.a022996] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Human endometrium has been extensively investigated in the search for markers capable of predicting its receptive status. The completion of the Human Genome Project has triggered a rapid development of new fields in molecular biology, the "transcriptomics" being a major turning point in the knowledge acquisition of endometrial receptivity. Based on this, a customized Endometrial Receptivity Array (ERA) has been developed, which is capable of identifying the genomic signature of receptivity. This diagnostic tool showed that the window of implantation (WOI) is displaced in one out of four patients with implantation failure, allowing the identification of their personalized WOI. This strategy allows performing a personalized embryo transfer (pET) on the day in which the endometrium is receptive. The combination of a systems biology approach and next-generation sequencing will overcome the limitations of microarrays, and will, in the future, allow elucidation of the mechanisms involved in embryo implantation.
Collapse
Affiliation(s)
- Eva Gómez
- IGENOMIX, Parc Cientific Valencia University, Paterna, 46980 Valencia, Spain
| | - Maria Ruíz-Alonso
- IGENOMIX, Parc Cientific Valencia University, Paterna, 46980 Valencia, Spain
| | - Jose Miravet
- IGENOMIX, Parc Cientific Valencia University, Paterna, 46980 Valencia, Spain
| | - Carlos Simón
- IGENOMIX, Parc Cientific Valencia University, Paterna, 46980 Valencia, Spain Fundación Instituto Valenciano de Infertilidad (FIVI), Department of Obstetrics and Gynecology, School of Medicine, Valencia University and Instituto Universitario IVI/INCLIVA, 46010 Valencia, Spain Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California 94305
| |
Collapse
|
8
|
Sengupta J, Ghosh D. Multi-level and multi-scale integrative approach to the understanding of human blastocyst implantation. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2014; 114:49-60. [DOI: 10.1016/j.pbiomolbio.2013.12.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 12/04/2013] [Indexed: 11/25/2022]
|
9
|
Sharkey AM, Macklon NS. The science of implantation emerges blinking into the light. Reprod Biomed Online 2013; 27:453-60. [PMID: 24055396 DOI: 10.1016/j.rbmo.2013.08.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Accepted: 08/27/2013] [Indexed: 01/06/2023]
Abstract
Although embryo implantation is essential for human survival, it remains an enigmatic biological phenomenon. Following fertilization, the resulting blastocyst must signal its presence to the mother, attach to the luminal epithelium of the endometrium and embed into the decidualising stroma. Failure to do so results in infertility, which affects around 9% of women. Subsequent placental development requires remodelling of maternal blood vessels by trophoblast cells from the placenta, that invade deep into the decidua. Failure in these very early stages can compromise fetal development, resulting in diseases of pregnancy such as intrauterine growth restriction or pre-eclampsia which can also impact on health in adulthood. Abnormal implantation therefore constitutes a significant disease burden in humans. Although we have known for many years that successful implantation requires an embryo that is competent to implant and an endometrium that is receptive, the molecular basis of these processes remains poorly understood. Our inability to identify implantation-competent embryos or to diagnose/treat the non-receptive endometrium therefore limits our ability to intervene through assisted reproduction techniques. This Implantation Symposium aims to review recent exciting developments in our understanding of the biology of early implantation and to highlight the rapid progress being made to translate these into improved diagnosis and treatment.
Collapse
Affiliation(s)
- Andrew M Sharkey
- Department of Pathology and Centre for Trophoblast Research, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK.
| | | |
Collapse
|
10
|
Cheong Y, Boomsma C, Heijnen C, Macklon N. Uterine secretomics: a window on the maternal-embryo interface. Fertil Steril 2013; 99:1093-9. [DOI: 10.1016/j.fertnstert.2013.01.144] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 01/16/2013] [Accepted: 01/19/2013] [Indexed: 01/11/2023]
|
11
|
Abstract
PURPOSE OF REVIEW Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency is one of the most common autosomal recessive disorders. In the past, pregnancy was considered to be unlikely for women with CAH, particularly the classical forms. The purpose of this review is to provide current information regarding the pathophysiology of CAH, factors relevant for female and male fertility, and recommendations for management during pregnancy. RECENT FINDINGS Individuals with CAH, both female and male, have reduced fertility. For women, chronic anovulation, elevated progestin levels, and aberrant endometrial implantation have been identified as reasons for the subfertility. Testicular adrenal rest tumors, oligospermia, and hypogonadotropic hypogonadism are frequently associated with subfertility in men with all forms of CAH. SUMMARY Adequate suppression of progesterone appears to be an essential aspect of preconception management for women. Most importantly, treatment needs to be individualized. Awareness of these factors and appropriate therapeutic interventions can lead to successful outcome defined as a healthy live born infant.
Collapse
Affiliation(s)
- Selma Feldman Witchel
- Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh, Pittsburgh, Pennsylvania 15224, USA.
| |
Collapse
|
12
|
Ponsuksili S, Murani E, Schwerin M, Schellander K, Tesfaye D, Wimmers K. Gene expression and DNA-methylation of bovine pretransfer endometrium depending on its receptivity after in vitro-produced embryo transfer. PLoS One 2012; 7:e42402. [PMID: 22952593 PMCID: PMC3428322 DOI: 10.1371/journal.pone.0042402] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 07/05/2012] [Indexed: 11/20/2022] Open
Abstract
Embryonic implantation to establish a pregnancy is a complex process that requires appropriate communication between the embryo and the maternal endometrium. Inadequate uterine receptivity may contribute to the majority of implantation failures. To provide a comprehensive inventory of genes and functional networks that represent the maternal input of the embryo-maternal cross-talk, a longitudinal, holistic study of the endometrial transcriptome in relation to the days of estrous and to the receptivity of the endometrium was performed in bovine. At day 3 of estrous, genes related to cell communication and mitochondrial energy metabolism were differentially expressed among high- and low-receptive endometria (HR, LR); at day 7, transcripts functioning in immune and inflammatory pathways, oxidative stress, and angiogenesis had different abundances. Additionally, temporal transcriptional changes between days 3 and 7 differed considerably among HR and LR. Further, several transcription factors were predicted as relevant for receptivity because they were either differentially expressed among HR and LR animals or are known to be associated with genes we detected to have differential expression. Finally, global DNA methylation varied according to the interaction of receptivity group and day of estrous, and a divergent trend, which correlated with abundance of DNMT1 transcript, was observed in LR and HR along the estrous cycle days. The study revealed that, even in early estrous, transcripts related to cell communication and response to exogenous stimuli, vascularization, and energy supply show divergent expression and longitudinal temporal regulation in HR and LR. Key components of these molecular pathways are known to be dependent on ovarian hormones that promote uterine receptivity.
Collapse
Affiliation(s)
- Siriluck Ponsuksili
- Research Group ‘Functional Genome Analysis’, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany
| | - Eduard Murani
- Research Unit ‘Molecular Biology’, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany
| | - Manfred Schwerin
- Research Group ‘Functional Genome Analysis’, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany
| | - Karl Schellander
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany
| | - Dawit Tesfaye
- Institute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany
| | - Klaus Wimmers
- Research Unit ‘Molecular Biology’, Leibniz Institute for Farm Animal Biology, Dummerstorf, Germany
- * E-mail:
| |
Collapse
|
13
|
Ruiz-Alonso M, Blesa D, Simón C. The genomics of the human endometrium. Biochim Biophys Acta Mol Basis Dis 2012; 1822:1931-42. [PMID: 22634130 DOI: 10.1016/j.bbadis.2012.05.004] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 04/04/2012] [Accepted: 05/06/2012] [Indexed: 12/11/2022]
Abstract
The endometrium is a complex tissue that lines the inside of the endometrial cavity. The gene expression of the different endometrial cell types is regulated by ovarian steroids and paracrine-secreted molecules from neighbouring cells. Due to this regulation, the endometrium goes through cyclic modifications which can be divided simply into the proliferative phase, the secretory phase and the menstrual phase. Successful embryo implantation depends on three factors: embryo quality, the endometrium's state of receptivity, and a synchronised dialogue between the maternal tissue and the blastocyst. There is a need to characterise the endometrium's state of receptivity in order to prevent reproductive failure. No single molecular or histological marker for this status has yet been found. Here, we review the global transcriptomic analyses performed in the last decade on a normal human endometrium. These studies provide us with a clue about what global gene expression can be expected for a non-pathological endometrium. These studies have shown endometrial phase-specific transcriptomic profiles and common temporal gene expression patterns. We summarise the biological processes and genes regulated in the different phases of natural cycles and present other works on different conditions as well as a receptivity diagnostic tool based on a specific gene set profile. This article is part of a Special Issue entitled: Molecular Genetics of Human Reproductive Failure.
Collapse
Affiliation(s)
- Maria Ruiz-Alonso
- Parc Cientific Universitat de Valencia, Calle Catedrático Agustín Escardino, Valencia, Spain.
| | | | | |
Collapse
|