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Ståhlberg A, El-Heliebi A, Sedlmayr P, Kroneis T. Unravelling the biological secrets of microchimerism by single-cell analysis. Brief Funct Genomics 2018; 17:255-264. [PMID: 29028900 PMCID: PMC6063264 DOI: 10.1093/bfgp/elx027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The presence of microchimeric cells is known for >100 years and well documented since decades. Earlier, microchimeric cells were mainly used for cell-based non-invasive prenatal diagnostics during early pregnancy. Microchimeric cells are also present beyond delivery and are associated to various autoimmune diseases, tissue repair, cancer and immune tolerance. All these findings were based on low complexity studies and occasionally accompanied by artefacts not allowing the biological functions of microchimerism to be determined. However, with the recent developments in single-cell analysis, new means to identify and characterize microchimeric cells are available. Cell labelling techniques in combination with single-cell analysis provide a new toolbox to decipher the biology of microchimeric cells at molecular and cellular level. In this review, we discuss how recent developments in single-cell analysis can be applied to determine the role and function of microchimeric cells.
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Affiliation(s)
- Anders Ståhlberg
- Sahlgrenska Cancer Center, Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Medicinaregatan 1F, Gothenburg, Sweden
| | - Amin El-Heliebi
- Institute of Cell Biology, Histology & Embryology, Medical University of Graz, Harrachgasse 21, Graz, Austria
| | - Peter Sedlmayr
- Institute of Cell Biology, Histology & Embryology, Medical University of Graz, Harrachgasse 21, Graz, Austria
| | - Thomas Kroneis
- Sahlgrenska Cancer Center, Department of Pathology and Genetics, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Medicinaregatan 1F, Gothenburg, Sweden
- Institute of Cell Biology, Histology & Embryology, Medical University of Graz, Harrachgasse 21, Graz, Austria
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52
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Nandi P, Lim H, Torres-Garcia EJ, Lala PK. Human trophoblast stem cell self-renewal and differentiation: Role of decorin. Sci Rep 2018; 8:8977. [PMID: 29895842 PMCID: PMC5997742 DOI: 10.1038/s41598-018-27119-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 05/24/2018] [Indexed: 12/18/2022] Open
Abstract
The origin and regulation of stem cells sustaining trophoblast renewal in the human placenta remain unclear. Decorin, a leucine-rich proteoglycan restrains trophoblast proliferation, migration/invasiveness and endovascular differentiation, and local decorin overproduction is associated with preeclampsia (PE). Here, we tested the role of decorin in human trophoblast stem cell self-renewal and differentiation, using two models: an immortalized first trimester trophoblast cell line HTR-8/SVneo (HTR) and freshly isolated primary trophoblast (p-trophoblast) from early first trimester (6-9 weeks) placentas. Self-renewal capacity was measured by spheroid forming ability of single cells on ultra-low attachment plates for multiple generations. Markers of embryonic stem (ES) cells, trophoblast stem (TS) cells and trophoblast were used to identify stem cell hierarchy. Differentiation markers for syncytial and extravillous (EVT) pathways were employed to identify differentiated cells. Bewo cells were additionally used to explore DCN effects on syncytialization. Results reveal that the incidence of spheroid forming stem-like cells was 13-15% in HTR and 0.1-0.4%, in early first trimester p-trophoblast, including a stem cell hierarchy of two populations of ES and TS-like cells. DCN restrained ES cell self-renewal, promoted ES to TS transition and maintenance of TS cell stem-ness, but inhibited TS cell differentiation into both syncytial and EVT pathways.
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Affiliation(s)
- Pinki Nandi
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Hyobin Lim
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Eloy Jose Torres-Garcia
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Peeyush K Lala
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada.
- Department of Oncology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada.
- Associate Scientist, Children's Health Research Institute, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada.
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53
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Lee CQE, Turco MY, Gardner L, Simons BD, Hemberger M, Moffett A. Integrin α2 marks a niche of trophoblast progenitor cells in first trimester human placenta. Development 2018. [PMID: 29540503 PMCID: PMC6124543 DOI: 10.1242/dev.162305] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
During pregnancy the trophoblast cells of the placenta are the only fetal cells in direct contact with maternal blood and decidua. Their functions include transport of nutrients and oxygen, secretion of pregnancy hormones, remodelling of the uterine arteries, and communicating with maternal cells. Despite the importance of trophoblast cells in placental development and successful pregnancy, little is known about the identity, location and differentiation of human trophoblast progenitors. We identify a proliferative trophoblast niche at the base of the cytotrophoblast cell columns in first trimester placentas that is characterised by integrin α2 (ITGA2) expression. Pulse-chase experiments with 5-iodo-2′-deoxyuridine indicate that these cells might contribute to both villous (VCT) and extravillous (EVT) lineages. These proliferating trophoblast cells can be isolated by flow cytometry using ITGA2 as a marker and express genes from both VCT and EVT. Microarray expression analysis shows that ITAG2+ cells display a unique transcriptional signature, including genes involved in NOTCH signalling, and exhibit a combination of epithelial and mesenchymal characteristics. ITGA2 thus marks a niche allowing the study of pure populations of trophoblast progenitor cells. Summary: ITGA2 marks a proliferative trophoblast progenitor compartment in first trimester human placenta that appears to be regulated by NOTCH signalling and exhibits a unique combination of epithelial and mesenchymal expression characteristics.
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Affiliation(s)
- Cheryl Q E Lee
- Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK.,Centre for Trophoblast Research, Tennis Court Road, University of Cambridge, Cambridge CB2 3DY, UK
| | - Margherita Y Turco
- Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK.,Centre for Trophoblast Research, Tennis Court Road, University of Cambridge, Cambridge CB2 3DY, UK
| | - Lucy Gardner
- Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK.,Centre for Trophoblast Research, Tennis Court Road, University of Cambridge, Cambridge CB2 3DY, UK
| | - Benjamin D Simons
- Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK.,The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, UK.,Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, UK
| | - Myriam Hemberger
- Centre for Trophoblast Research, Tennis Court Road, University of Cambridge, Cambridge CB2 3DY, UK.,Epigenetics Programme, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK
| | - Ashley Moffett
- Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK .,Centre for Trophoblast Research, Tennis Court Road, University of Cambridge, Cambridge CB2 3DY, UK
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54
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Soncin F, Khater M, To C, Pizzo D, Farah O, Wakeland A, Arul Nambi Rajan K, Nelson KK, Chang CW, Moretto-Zita M, Natale DR, Laurent LC, Parast MM. Comparative analysis of mouse and human placentae across gestation reveals species-specific regulators of placental development. Development 2018; 145:dev.156273. [PMID: 29361559 DOI: 10.1242/dev.156273] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 01/09/2018] [Indexed: 01/08/2023]
Abstract
An increasing body of evidence points to significant spatio-temporal differences in early placental development between mouse and human, but a detailed comparison of placentae in these two species is missing. We set out to compare placentae from both species across gestation, with a focus on trophoblast progenitor markers. We found that CDX2 and ELF5, but not EOMES, are expressed in early post-implantation trophoblast subpopulations in both species. Genome-wide expression profiling of mouse and human placentae revealed clusters of genes with distinct co-expression patterns across gestation. Overall, there was a closer fit between patterns observed in the placentae when the inter-species comparison was restricted to human placentae through gestational week 16 (thus, excluding full-term samples), suggesting that the developmental timeline in mouse runs parallel to the first half of human placental development. In addition, we identified VGLL1 as a human-specific marker of proliferative cytotrophoblast, where it is co-expressed with the transcription factor TEAD4. As TEAD4 is involved in trophectoderm specification in the mouse, we posit a regulatory role for VGLL1 in early events during human placental development.
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Affiliation(s)
- Francesca Soncin
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Marwa Khater
- Department of Reproductive Medicine, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Cuong To
- Department of Reproductive Medicine, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Donald Pizzo
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA
| | - Omar Farah
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Anna Wakeland
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Kanaga Arul Nambi Rajan
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Katharine K Nelson
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Ching-Wen Chang
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Matteo Moretto-Zita
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA.,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - David R Natale
- Department of Reproductive Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Louise C Laurent
- Department of Reproductive Medicine, University of California San Diego, La Jolla, CA 92093, USA .,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
| | - Mana M Parast
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA .,Sanford Consortium for Regenerative Medicine, La Jolla, CA, 92037, USA
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55
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56
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Okae H, Toh H, Sato T, Hiura H, Takahashi S, Shirane K, Kabayama Y, Suyama M, Sasaki H, Arima T. Derivation of Human Trophoblast Stem Cells. Cell Stem Cell 2017; 22:50-63.e6. [PMID: 29249463 DOI: 10.1016/j.stem.2017.11.004] [Citation(s) in RCA: 490] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 09/20/2017] [Accepted: 11/02/2017] [Indexed: 11/25/2022]
Abstract
Trophoblast cells play an essential role in the interactions between the fetus and mother. Mouse trophoblast stem (TS) cells have been derived and used as the best in vitro model for molecular and functional analysis of mouse trophoblast lineages, but attempts to derive human TS cells have so far been unsuccessful. Here we show that activation of Wingless/Integrated (Wnt) and EGF and inhibition of TGF-β, histone deacetylase (HDAC), and Rho-associated protein kinase (ROCK) enable long-term culture of human villous cytotrophoblast (CT) cells. The resulting cell lines have the capacity to give rise to the three major trophoblast lineages, which show transcriptomes similar to those of the corresponding primary trophoblast cells. Importantly, equivalent cell lines can be derived from human blastocysts. Our data strongly suggest that the CT- and blastocyst-derived cell lines are human TS cells, which will provide a powerful tool to study human trophoblast development and function.
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Affiliation(s)
- Hiroaki Okae
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Hidehiro Toh
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Tetsuya Sato
- Division of Bioinformatics, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hitoshi Hiura
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Sota Takahashi
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Kenjiro Shirane
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Yuka Kabayama
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Mikita Suyama
- Division of Bioinformatics, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hiroyuki Sasaki
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Takahiro Arima
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
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57
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The cytotrophoblastic shell and complications of pregnancy. Placenta 2017; 60:134-139. [DOI: 10.1016/j.placenta.2017.06.007] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/10/2017] [Accepted: 06/12/2017] [Indexed: 01/06/2023]
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58
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Wong F, Cox BJ. Cellular analysis of trophoblast and placenta. Placenta 2017; 59 Suppl 1:S2-S7. [DOI: 10.1016/j.placenta.2016.11.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 11/16/2016] [Accepted: 11/29/2016] [Indexed: 12/23/2022]
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59
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Home P, Kumar RP, Ganguly A, Saha B, Milano-Foster J, Bhattacharya B, Ray S, Gunewardena S, Paul A, Camper SA, Fields PE, Paul S. Genetic redundancy of GATA factors in the extraembryonic trophoblast lineage ensures the progression of preimplantation and postimplantation mammalian development. Development 2017; 144:876-888. [PMID: 28232602 PMCID: PMC5374352 DOI: 10.1242/dev.145318] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 01/10/2017] [Indexed: 12/16/2022]
Abstract
GATA transcription factors are implicated in establishing cell fate during mammalian development. In early mammalian embryos, GATA3 is selectively expressed in the extraembryonic trophoblast lineage and regulates gene expression to promote trophoblast fate. However, trophoblast-specific GATA3 function is dispensable for early mammalian development. Here, using dual conditional knockout mice, we show that genetic redundancy of Gata3 with paralog Gata2 in trophoblast progenitors ensures the successful progression of both pre- and postimplantation mammalian development. Stage-specific gene deletion in trophoblasts reveals that loss of both GATA genes, but not either alone, leads to embryonic lethality prior to the onset of their expression within the embryo proper. Using ChIP-seq and RNA-seq analyses, we define the global targets of GATA2/GATA3 and show that they directly regulate a large number of common genes to orchestrate stem versus differentiated trophoblast fate. In trophoblast progenitors, GATA factors directly regulate BMP4, Nodal and Wnt signaling components that promote embryonic-extraembryonic signaling cross-talk, which is essential for the development of the embryo proper. Our study provides genetic evidence that impairment of trophoblast-specific GATA2/GATA3 function could lead to early pregnancy failure. Summary: During trophoblast development in mice, GATA2 and GATA3 act synergistically by directly regulating a large number of common genes, and together are important to ensure trophoblast lineage progression.
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Affiliation(s)
- Pratik Home
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Ram Parikshan Kumar
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Avishek Ganguly
- North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Biswarup Saha
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Jessica Milano-Foster
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Bhaswati Bhattacharya
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Soma Ray
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Sumedha Gunewardena
- Department of Molecular and Integrative Physiology, Department of Biostatistics, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Arindam Paul
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Sally A Camper
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Patrick E Fields
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Soumen Paul
- Department of Pathology and Laboratory Medicine and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
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60
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Latos PA, Hemberger M. From the stem of the placental tree: trophoblast stem cells and their progeny. Development 2017; 143:3650-3660. [PMID: 27802134 DOI: 10.1242/dev.133462] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Trophoblast stem cells (TSCs) retain the capacity to self-renew indefinitely and harbour the potential to differentiate into all trophoblast subtypes of the placenta. Recent studies have shown how signalling cascades integrate with transcription factor circuits to govern the fine balance between TSC self-renewal and differentiation. In addition, breakthroughs in reprogramming strategies have enabled the generation of TSCs from fibroblasts, opening up exciting new avenues that may allow the isolation of this stem cell type from other species, notably humans. Here, we review these recent advances in light of their importance for understanding placental pathologies and developing personalised medicine approaches for pregnancy complications.
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Affiliation(s)
- Paulina Anna Latos
- Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK.,Epigenetics Programme, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK
| | - Myriam Hemberger
- Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK .,Epigenetics Programme, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK
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61
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Abstract
Epidemiological evidence links an individual's susceptibility to chronic disease in adult life to events during their intrauterine phase of development. Biologically this should not be unexpected, for organ systems are at their most plastic when progenitor cells are proliferating and differentiating. Influences operating at this time can permanently affect their structure and functional capacity, and the activity of enzyme systems and endocrine axes. It is now appreciated that such effects lay the foundations for a diverse array of diseases that become manifest many years later, often in response to secondary environmental stressors. Fetal development is underpinned by the placenta, the organ that forms the interface between the fetus and its mother. All nutrients and oxygen reaching the fetus must pass through this organ. The placenta also has major endocrine functions, orchestrating maternal adaptations to pregnancy and mobilizing resources for fetal use. In addition, it acts as a selective barrier, creating a protective milieu by minimizing exposure of the fetus to maternal hormones, such as glucocorticoids, xenobiotics, pathogens, and parasites. The placenta shows a remarkable capacity to adapt to adverse environmental cues and lessen their impact on the fetus. However, if placental function is impaired, or its capacity to adapt is exceeded, then fetal development may be compromised. Here, we explore the complex relationships between the placental phenotype and developmental programming of chronic disease in the offspring. Ensuring optimal placentation offers a new approach to the prevention of disorders such as cardiovascular disease, diabetes, and obesity, which are reaching epidemic proportions.
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Affiliation(s)
- Graham J Burton
- Centre for Trophoblast Research and Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom; and Department of Medicine, Knight Cardiovascular Institute, and Moore Institute for Nutrition and Wellness, Oregon Health and Science University, Portland, Oregon
| | - Abigail L Fowden
- Centre for Trophoblast Research and Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom; and Department of Medicine, Knight Cardiovascular Institute, and Moore Institute for Nutrition and Wellness, Oregon Health and Science University, Portland, Oregon
| | - Kent L Thornburg
- Centre for Trophoblast Research and Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom; and Department of Medicine, Knight Cardiovascular Institute, and Moore Institute for Nutrition and Wellness, Oregon Health and Science University, Portland, Oregon
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62
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Rhee C, Edwards M, Dang C, Harris J, Brown M, Kim J, Tucker HO. ARID3A is required for mammalian placenta development. Dev Biol 2017; 422:83-91. [PMID: 27965054 PMCID: PMC5540318 DOI: 10.1016/j.ydbio.2016.12.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/29/2016] [Accepted: 12/01/2016] [Indexed: 11/17/2022]
Abstract
Previous studies in the mouse indicated that ARID3A plays a critical role in the first cell fate decision required for generation of trophectoderm (TE). Here, we demonstrate that ARID3A is widely expressed during mouse and human placentation and essential for early embryonic viability. ARID3A localizes to trophoblast giant cells and other trophoblast-derived cell subtypes in the junctional and labyrinth zones of the placenta. Conventional Arid3a knockout embryos suffer restricted intrauterine growth with severe defects in placental structural organization. Arid3a null placentas show aberrant expression of subtype-specific markers as well as significant alteration in cytokines, chemokines and inflammatory response-related genes, including previously established markers of human placentation disorders. BMP4-mediated induction of trophoblast stem (TS)-like cells from human induced pluripotent stem cells results in ARID3A up-regulation and cytoplasmic to nuclear translocation. Overexpression of ARID3A in BMP4-mediated TS-like cells up-regulates TE markers, whereas pluripotency markers are down-regulated. Our results reveal an essential, conserved function for ARID3A in mammalian placental development through regulation of both intrinsic and extrinsic developmental programs.
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Affiliation(s)
- Catherine Rhee
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, United States; Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, United States
| | - Melissa Edwards
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, United States; Cell and Molecular Biology, Colorado State University, Fort Collins, CO 80523, United States
| | - Christine Dang
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, United States
| | - June Harris
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, United States
| | - Mark Brown
- Cell and Molecular Biology, Colorado State University, Fort Collins, CO 80523, United States
| | - Jonghwan Kim
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, United States; Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, United States
| | - Haley O Tucker
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, United States; Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, United States.
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63
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Yan H, Qiu L, Xie X, Yang H, Liu Y, Lin X, Huang H. ELF5 in epithelial ovarian carcinoma tissues and biological behavior in ovarian carcinoma cells. Oncol Rep 2017; 37:1412-1418. [PMID: 28184931 PMCID: PMC5364829 DOI: 10.3892/or.2017.5418] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 01/23/2017] [Indexed: 01/09/2023] Open
Abstract
The expression of E74-like factor 5 (ELF5) in epithelial ovarian carcinoma tissues and its effects on biological behavior in ovarian carcinoma cells were assessed in search for a new approach for gene treatment of epithelial ovarian carcinoma. RT-PCR technology was applied to detect the expression of ELF5 mRNA in epithelial ovarian carcinoma (n=49), borderline ovarian epithelial tumor (n=19), benign ovarian epithelial tumor (n=31) and normal ovarian tissues (n=40). Then, we transfected recombinant plasmid pcDNA3.1‑ELF5+EGFP into human ovarian carcinoma SKOV3 cells (recombinant plasmid group) in vitro and screened out stably transfected cells to conduct multiplication culture. Western blot analysis was performed to detect the expression of ELF5 protein in the different groups. Flow cytometry was employed to detect cell apoptosis and cycles. ELF5 mRNA in epithelial ovarian carcinoma and borderline ovarian epithelial tumor tissues were significantly lower (P<0.05) than those in benign ovarian epithelial tumor and normal ovarian tissues. ELF5 protein expression in the cells of recombinant plasmid group was significantly higher compared with empty plasmid and blank control groups. The capacity of cell reproductive recombinant plasmid group at each time point decreased (P<0.05). Flow cytometry detection showed that 67.03% of cells in recombinant plasmid group was blocked in G0/G1 phase (P<0.05), compared with empty plasmid group (37.17%) and blank control group (38.24%). Apoptotic rate of recombinant plasmid group was significantly lower (31.4±1.9%; P<0.05), compared with that of empty plasmid group (9.1±2.2%) and blank control group (8.7±1.5%), and the differences were statistically significant. In conclusion, ELF5 interfered with cell cycle of human ovarian carcinoma SKOV3 cells and promoted apoptosis of human ovarian carcinoma SKOV3 cells inhibiting their growth and invasive capacity; and thus providing a new approach to gene treatment of ovarian carcinoma.
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Affiliation(s)
- Hongchao Yan
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Linglin Qiu
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Xiaolei Xie
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - He Yang
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Yongli Liu
- Department of Obstetrics and Gynecology, The First People's Hospital of Xuzhou, Xuzhou, Jiangsu 221000, P.R. China
| | - Xiaoman Lin
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Hongxiang Huang
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
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Burton GJ, Jauniaux E, Murray AJ. Oxygen and placental development; parallels and differences with tumour biology. Placenta 2017; 56:14-18. [PMID: 28187917 DOI: 10.1016/j.placenta.2017.01.130] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/24/2017] [Accepted: 01/31/2017] [Indexed: 02/08/2023]
Abstract
Human placentation involves the invasion of the conceptus into the wall of the uterus, and establishment of a blood supply from the maternal spiral arteries. The placenta has therefore been likened to a malignant tumour, albeit a highly regulated one. Oxygen plays an important role in controlling both placental development and tumour behaviour. In the placenta, early development takes place in a physiological low oxygen environment, which undergoes a transition with onset of the full maternal arterial circulation towards the end of the first trimester. By comparison, in tumours there is often a progressive hypoxia as the mass outgrows its blood supply. Both early placental tissues and tumour cells show high rates of proliferation, and the energy required to support these comes principally from glycolysis. Glycolysis is maintained in placental tissues by reoxidation of pyridine nucleotides through the polyol pathways, whereas in tumours there is fermentation to lactate, Warburg metabolism. In both cases, the reliance on glycolysis rather than oxidative phosphorylation preserves carbon skeletons that can be utilised in the synthesis of nucleotides, cell membranes and organelles, and that would otherwise be excreted as carbon dioxide. In the placenta, this reliance may also protect the embryo from free radical-mediated teratogenesis. Local oxygen gradients within both sets of tissues may influence the cell behaviour. In particular, they may induce an epithelial-mesenchymal transition, promoting extravillous trophoblast invasion in the placenta and metastasis in a tumour. Further investigations into the two scenarios may provide new insights of benefit to these contrasting, but similar, fields of cellular biology.
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Affiliation(s)
- Graham J Burton
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK.
| | - Eric Jauniaux
- Department of Obstetrics and Gynaecology, University College London Hospitals and UCL Institute for Women's Health, University College London (UCL), London, UK
| | - Andrew J Murray
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
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Chang CW, Parast MM. Human trophoblast stem cells: Real or not real? Placenta 2017; 60 Suppl 1:S57-S60. [PMID: 28087122 DOI: 10.1016/j.placenta.2017.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 12/30/2016] [Accepted: 01/04/2017] [Indexed: 10/24/2022]
Abstract
Abnormal trophoblast differentiation is the root cause of many placenta-based pregnancy complications, including preeclampsia and fetal growth restriction. Human trophoblast differentiation is difficult to study due to the lack of a stem cell model. Such a multipotent "trophoblast stem" (TS) cell, with the ability to differentiate into all trophoblast subtypes, has been derived from mouse blastocysts, but attempts to derive similar human cells have failed. We consider here several possibilities for the TS cell niche in the human placenta. Aside from discussion of such a niche in the pre-implantation blastocyst, we discuss evidence for these TS cells residing in the post-implantation villous cytotrophoblast layer, or even in the non-trophoblast portions, of the human placenta. It is our hope that recognition of the niche would lead to successful derivation and in vitro establishment of such cells, which could then be disseminated widely to the placental biology community for advancing the field. Availability of self-renewing human TS cells, whose gene expression and environment could be manipulated, will provide a platform, not just for the study of pathophysiology of placental disease, but also for the discovery of diagnostic biomarkers and therapeutic targets for common pregnancy complications.
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Affiliation(s)
- Ching-Wen Chang
- Department of Pathology, University of California San Diego, La Jolla, CA, USA; Sanford Consortium for Regenerative Medicine, University of California San Diego, La Jolla, CA, USA
| | - Mana M Parast
- Department of Pathology, University of California San Diego, La Jolla, CA, USA; Sanford Consortium for Regenerative Medicine, University of California San Diego, La Jolla, CA, USA.
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Baines K, Renaud S. Transcription Factors That Regulate Trophoblast Development and Function. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 145:39-88. [DOI: 10.1016/bs.pmbts.2016.12.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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67
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Notch1 controls development of the extravillous trophoblast lineage in the human placenta. Proc Natl Acad Sci U S A 2016; 113:E7710-E7719. [PMID: 27849611 DOI: 10.1073/pnas.1612335113] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Development of the human placenta and its different epithelial trophoblasts is crucial for a successful pregnancy. Besides fusing into a multinuclear syncytium, the exchange surface between mother and fetus, progenitors develop into extravillous trophoblasts invading the maternal uterus and its spiral arteries. Migration into these vessels promotes remodelling and, as a consequence, adaption of blood flow to the fetal-placental unit. Defects in remodelling and trophoblast differentiation are associated with severe gestational diseases, such as preeclampsia. However, mechanisms controlling human trophoblast development are largely unknown. Herein, we show that Notch1 is one such critical regulator, programming primary trophoblasts into progenitors of the invasive differentiation pathway. At the 12th wk of gestation, Notch1 is exclusively detected in precursors of the extravillous trophoblast lineage, forming cell columns anchored to the uterine stroma. At the 6th wk, Notch1 is additionally expressed in clusters of villous trophoblasts underlying the syncytium, suggesting that the receptor initiates the invasive differentiation program in distal regions of the developing placental epithelium. Manipulation of Notch1 in primary trophoblast models demonstrated that the receptor promotes proliferation and survival of extravillous trophoblast progenitors. Notch1 intracellular domain induced genes associated with stemness of cell columns, myc and VE-cadherin, in Notch1- fusogenic precursors, and bound to the myc promoter and enhancer region at RBPJκ cognate sequences. In contrast, Notch1 repressed syncytialization and expression of TEAD4 and p63, two regulators controlling self-renewal of villous cytotrophoblasts. Our results revealed Notch1 as a key factor promoting development of progenitors of the extravillous trophoblast lineage in the human placenta.
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Lee CQE, Gardner L, Turco M, Zhao N, Murray MJ, Coleman N, Rossant J, Hemberger M, Moffett A. What Is Trophoblast? A Combination of Criteria Define Human First-Trimester Trophoblast. Stem Cell Reports 2016; 6:257-72. [PMID: 26862703 PMCID: PMC4750161 DOI: 10.1016/j.stemcr.2016.01.006] [Citation(s) in RCA: 189] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 01/08/2016] [Accepted: 01/11/2016] [Indexed: 12/15/2022] Open
Abstract
Controversy surrounds reports describing the derivation of human trophoblast cells from placentas and embryonic stem cells (ESC), partly due to the difficulty in identifying markers that define cells as belonging to the trophoblast lineage. We have selected criteria that are characteristic of primary first-trimester trophoblast: a set of protein markers, HLA class I profile, methylation of ELF5, and expression of microRNAs (miRNAs) from the chromosome 19 miRNA cluster (C19MC). We tested these criteria on cells previously reported to show some phenotypic characteristics of trophoblast: bone morphogenetic protein (BMP)-treated human ESC and 2102Ep, an embryonal carcinoma cell line. Both cell types only show some, but not all, of the four trophoblast criteria. Thus, BMP-treated human ESC have not fully differentiated to trophoblast. Our study identifies a robust panel, including both protein and non-protein-coding markers that, in combination, can be used to reliably define cells as characteristic of early trophoblast.
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Affiliation(s)
- Cheryl Q E Lee
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK; Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK; Program in Developmental and Stem Cell Biology, Hospital for Sick Children, Toronto M5G 0A4, Canada.
| | - Lucy Gardner
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK; Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - Margherita Turco
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK; Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - Nancy Zhao
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK
| | - Matthew J Murray
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK
| | - Nicholas Coleman
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK
| | - Janet Rossant
- Program in Developmental and Stem Cell Biology, Hospital for Sick Children, Toronto M5G 0A4, Canada; Department of Molecular Genetics, University of Toronto, Toronto M5G 0A4, Canada
| | - Myriam Hemberger
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK; Epigenetics Programme, The Babraham Institute, Cambridge CB22 3AT, UK
| | - Ashley Moffett
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK; Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK.
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Flannery CA, Fleming AG, Choe GH, Naqvi H, Zhang M, Sharma A, Taylor HS. Endometrial Cancer-Associated FGF18 Expression Is Reduced by Bazedoxifene in Human Endometrial Stromal Cells In Vitro and in Murine Endometrium. Endocrinology 2016; 157:3699-3708. [PMID: 27267714 PMCID: PMC5045514 DOI: 10.1210/en.2016-1233] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Endometrial cancer develops during exposure to estrogen unopposed by progesterone. Traditional formulations for menopausal hormone therapy include a progestin in women with a uterus. However, progestin exposure increases breast cancer risk in postmenopausal women. Alternatives to progestin include bazedoxifene (BZA), a selective estrogen receptor modulator, which prevents estrogen induced endometrial hyperplasia in clinical trials. Molecular mechanisms responsible for BZA's antiproliferative effect are not fully elucidated. We profiled endometrial adenocarcinoma, hyperplasia, and normal proliferative endometrium for differential expression in genes known to be regulated by estrogens or progesterone. Fibroblast growth factor (FGF)18, a paracrine growth factor promoting epithelial proliferation, was significantly increased in adenocarcinoma. Progesterone represses FGF18 by inducing heart and neural crest derivatives expressed transcript 2 (HAND2) in stromal cells. Notably, we confirmed lower HAND2 mRNA in adenocarcinoma, along with higher FGF tyrosine kinase receptor 2 and E74-like factor 5, collectively promoting FGF18 activity. We hypothesized BZA reduces epithelial proliferation by inhibiting FGF18 synthesis in stromal cells. To determine whether BZA regulates FGF18, we treated primary stromal cells with BZA or vehicle. In vitro, BZA reduced FGF18, but did not affect, HAND2. CD1 female mice received either BZA, conjugated estrogen (CE), or combined BZA/CE for 8 weeks. CE-treated mice had nearly 3-fold higher FGF18 expression. In contrast, BZA-treated mice, alone or with CE, had similar FGF18 as controls. Unexpectedly, BZA, alone or with CE, reduced HAND2 more than 80%, differing from progesterone regulation. Reduction of FGF18 is a potential mechanism by which BZA reduces endometrial proliferation and hyperplasia induced by estrogens. However, BZA works independently of HAND2, revealing a novel mechanism for progestin-free hormone therapy in postmenopausal women.
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Affiliation(s)
- Clare A Flannery
- Obstetrics, Gynecology, and Reproductive Sciences (C.A.F., A.G.F., G.H.C., H.N., M.Z., H.S.T.), Yale School of Medicine, New Haven, Connecticut 06520; and Endocrinology and Metabolism (C.A.F., A.S.), Internal Medicine, Yale School of Medicine, New Haven, Connecticut 06520
| | - Andrew G Fleming
- Obstetrics, Gynecology, and Reproductive Sciences (C.A.F., A.G.F., G.H.C., H.N., M.Z., H.S.T.), Yale School of Medicine, New Haven, Connecticut 06520; and Endocrinology and Metabolism (C.A.F., A.S.), Internal Medicine, Yale School of Medicine, New Haven, Connecticut 06520
| | - Gina H Choe
- Obstetrics, Gynecology, and Reproductive Sciences (C.A.F., A.G.F., G.H.C., H.N., M.Z., H.S.T.), Yale School of Medicine, New Haven, Connecticut 06520; and Endocrinology and Metabolism (C.A.F., A.S.), Internal Medicine, Yale School of Medicine, New Haven, Connecticut 06520
| | - Hanyia Naqvi
- Obstetrics, Gynecology, and Reproductive Sciences (C.A.F., A.G.F., G.H.C., H.N., M.Z., H.S.T.), Yale School of Medicine, New Haven, Connecticut 06520; and Endocrinology and Metabolism (C.A.F., A.S.), Internal Medicine, Yale School of Medicine, New Haven, Connecticut 06520
| | - Margaret Zhang
- Obstetrics, Gynecology, and Reproductive Sciences (C.A.F., A.G.F., G.H.C., H.N., M.Z., H.S.T.), Yale School of Medicine, New Haven, Connecticut 06520; and Endocrinology and Metabolism (C.A.F., A.S.), Internal Medicine, Yale School of Medicine, New Haven, Connecticut 06520
| | - Anu Sharma
- Obstetrics, Gynecology, and Reproductive Sciences (C.A.F., A.G.F., G.H.C., H.N., M.Z., H.S.T.), Yale School of Medicine, New Haven, Connecticut 06520; and Endocrinology and Metabolism (C.A.F., A.S.), Internal Medicine, Yale School of Medicine, New Haven, Connecticut 06520
| | - Hugh S Taylor
- Obstetrics, Gynecology, and Reproductive Sciences (C.A.F., A.G.F., G.H.C., H.N., M.Z., H.S.T.), Yale School of Medicine, New Haven, Connecticut 06520; and Endocrinology and Metabolism (C.A.F., A.S.), Internal Medicine, Yale School of Medicine, New Haven, Connecticut 06520
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Gamage TK, Chamley LW, James JL. Stem cell insights into human trophoblast lineage differentiation. Hum Reprod Update 2016; 23:77-103. [PMID: 27591247 DOI: 10.1093/humupd/dmw026] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 06/27/2016] [Accepted: 07/05/2016] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The human placenta is vital for fetal development, yet little is understood about how it forms successfully to ensure a healthy pregnancy or why this process is inadequate in 1 in 10 pregnancies, leading to miscarriage, intrauterine growth restriction or preeclampsia. Trophoblasts are placenta-specific epithelial cells that maximize nutrient exchange. All trophoblast lineages are thought to arise from a population of trophoblast stem cells (TSCs). However, whilst the isolation of murine TSC has led to an explosion in understanding murine placentation, the isolation of an analogous human TSC has proved more difficult. Consequently, alternative methods of studying human trophoblast lineage development have been employed, including human embryonic stem cells (hESCs), induced pluripotent stem cells (iPS) and transformed cell lines; but what do these proxy models tell us about what is happening during early placental development? OBJECTIVE AND RATIONALE In this systematic review, we evaluate current approaches to understanding human trophoblast lineage development in order to collate and refine these models and inform future approaches aimed at establishing human TSC lines. SEARCH METHODS To ensure all relevant articles were analysed, an unfiltered search of Pubmed, Embase, Scopus and Web of Science was conducted for 25 key terms on the 13th May 2016. In total, 47 313 articles were retrieved and manually filtered based on non-human, non-English, non-full text, non-original article and off-topic subject matter. This resulted in a total of 71 articles deemed relevant for review in this article. OUTCOMES Candidate human TSC populations have been identified in, and isolated from, both the chorionic membrane and villous tissue of the placenta, but further investigation is required to validate these as 'true' human TSCs. Isolating human TSCs from blastocyst trophectoderm has not been successful in humans as it was in mice, although recently the first reported TSC line (USFB6) was isolated from an eight-cell morula. In lieu of human TSC lines, trophoblast-like cells have been induced to differentiate from hESCs and iPS. However, differentiation in these model systems is difficult to control, culture conditions employed are highly variable, and the extent to which they accurately convey the biology of 'true' human TSCs remains unclear, particularly as a consensus has not been met among the scientific community regarding which characteristics a human TSC must possess. WIDER IMPLICATIONS Human TSC models have the potential to revolutionize our understanding of trophoblast differentiation, allowing us to make significant gains in understanding the underlying pathology of pregnancy disorders and to test potential therapeutic interventions on cell function in vitro. In order to do this, a collaborative effort is required to establish the criteria that define a human TSC to confirm the presence of human TSCs in both primary isolates and to determine how accurately trophoblast-like cells derived from current model systems reflect trophoblast from primary tissue. The in vitro systems currently used to model early trophoblast lineage formation have provided insights into early human placental formation but it is unclear whether these trophoblast-like cells are truly representative of primary human trophoblast. Consequently, continued refinement of current models, and standardization of culture protocols is essential to aid our ability to identify, isolate and propagate 'true' human TSCs from primary tissue.
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Affiliation(s)
- Teena Kjb Gamage
- Department of Obstetrics and Gynaecology, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Lawrence W Chamley
- Department of Obstetrics and Gynaecology, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Joanna L James
- Department of Obstetrics and Gynaecology, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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71
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Jurkovic I, Gecek I, Skrtic A, Zmijanac Partl J, Nikuseva Martic T, Serman A, Galesic Ljubanovic D, Serman L. ELF5 transcription factor expression during gestation in humans and rats - an immunohistochemical analysis. J Matern Fetal Neonatal Med 2016; 30:1261-1266. [PMID: 27384067 DOI: 10.1080/14767058.2016.1210596] [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] [Indexed: 01/09/2023]
Abstract
OBJECTIVE The purpose of this study was to measure immunohistochemically the expression of ELF5 protein in term human and rat placentas and in human placentas associated with gestational diabetes (GD) and intrauterine growth restriction (IUGR). METHODS The results were quantitated stereologically using the stereological variable of volume density. A semiquantitative analysis was performed independently by a certified pathologist. RESULTS Total expression of ELF5 protein was higher in pathological pregnancies than in corresponding control term placentas, with both methods of quantifications showing similar results. In addition, ELF5 expression was also higher in connective tissue and blood vessels in chorionic villi in IUGR placentas (but not in GD placentas) compared to healthy controls. ELF5 is higher in placenta as a whole and in most of its components in both pathologies. The two exceptions are chorionic plates in IUGR and decidua in GD, where its expression is lower than in healthy controls. CONCLUSIONS We have shown that IUGR and GD are associated with significantly increased levels of ELF5 protein in placentas, which suggests that ELF5 may play an important role in normal placentation. However, these are term placentas and to study ELF5 in premature births would give better insight into human placentation in health and disease.
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Affiliation(s)
- Ivana Jurkovic
- a Department of Biology , School of Medicine, University of Zagreb , Zagreb , Croatia
| | - Iva Gecek
- b Department of Pathology , University Hospital Dubrava , Zagreb , Croatia
| | - Anita Skrtic
- c Department of Pathology , School of Medicine, University of Zagreb , Zagreb , Croatia
| | - Jasenka Zmijanac Partl
- d Department of Gynecology and Obstetrics , University Hospital Merkur , Zagreb , Croatia , and
| | | | - Alan Serman
- e Department of Gynecology and Obstetrics , School of Medicine, University of Zagreb , Zagreb , Croatia
| | | | - Ljiljana Serman
- a Department of Biology , School of Medicine, University of Zagreb , Zagreb , Croatia
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Bianco K, Gormley M, Farrell J, Zhou Y, Oliverio O, Tilden H, McMaster M, Fisher SJ. Placental transcriptomes in the common aneuploidies reveal critical regions on the trisomic chromosomes and genome-wide effects. Prenat Diagn 2016; 36:812-22. [PMID: 27328057 DOI: 10.1002/pd.4862] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/12/2016] [Accepted: 06/17/2016] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Chromosomal aberrations are frequently associated with birth defects and pregnancy losses. Trisomy 13, Trisomy 18 and Trisomy 21 are the most common, clinically relevant fetal aneusomies. This study used a transcriptomics approach to identify the molecular signatures at the maternal-fetal interface in each aneuploidy. METHODS We profiled placental gene expression (13-22 weeks) in T13 (n = 4), T18 (n = 4) and T21 (n = 8), and in euploid pregnancies (n = 4). RESULTS We found differentially expressed transcripts (≥2-fold) in T21 (n = 160), T18 (n = 80) and T13 (n = 125). The majority were upregulated and most of the misexpressed genes were not located on the relevant trisomic chromosome, suggesting genome-wide dysregulation. A smaller number of the differentially expressed transcripts were encoded on the trisomic chromosome, suggesting gene dosage. In T21, <10% of the genes were transcribed from the Down syndrome critical region (21q21-22), which contributes to the clinical phenotype. In T13, 15% of the upregulated genes were on the affected chromosome (13q11-14), and in T18, the percentage increased to 24% (18q11-22 region). CONCLUSION The trisomic placental (and possibly fetal) phenotypes are driven by the combined effects of genome-wide phenomena and increased gene dosage from the trisomic chromosome. © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Katherine Bianco
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA.,Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Matthew Gormley
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA
| | - Jason Farrell
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA
| | - Yan Zhou
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA
| | - Oliver Oliverio
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA
| | - Hannah Tilden
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA.,The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA
| | - Michael McMaster
- Department of Cell and Tissue Biology, University of California, San Francisco, CA, USA
| | - Susan J Fisher
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA. .,Center for Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA. .,The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, USA.
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Sarkar P, Mischler A, Randall SM, Collier TS, Dorman KF, Boggess KA, Muddiman DC, Rao BM. Identification of Epigenetic Factor Proteins Expressed in Human Embryonic Stem Cell-Derived Trophoblasts and in Human Placental Trophoblasts. J Proteome Res 2016; 15:2433-44. [PMID: 27378238 DOI: 10.1021/acs.jproteome.5b01118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Human embryonic stem cells (hESCs) have been used to derive trophoblasts through differentiation in vitro. Intriguingly, mouse ESCs are prevented from differentiation to trophoblasts by certain epigenetic factor proteins such as Dnmt1, thus necessitating the study of epigenetic factor proteins during hESC differentiation to trophoblasts. We used stable isotope labeling by amino acids in cell culture and quantitative proteomics to study changes in the nuclear proteome during hESC differentiation to trophoblasts and identified changes in the expression of 30 epigenetic factor proteins. Importantly, the DNA methyltransferases DNMT1, DNMT3A, and DNMT3B were downregulated. Additionally, we hypothesized that nuclear proteomics of hESC-derived trophoblasts may be used for screening epigenetic factor proteins expressed by primary trophoblasts in human placental tissue. Accordingly, we conducted immunohistochemistry analysis of six epigenetic factor proteins identified from hESC-derived trophoblasts-DNMT1, DNMT3B, BAF155, BAF60A, BAF57, and ING5-in 6-9 week human placentas. Indeed, expression of these proteins was largely, though not fully, consistent with that observed in 6-9 week placental trophoblasts. Our results support the use of hESC-derived trophoblasts as a model for placental trophoblasts, which will enable further investigation of epigenetic factors involved in human trophoblast development.
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Affiliation(s)
| | | | | | | | - Karen F Dorman
- Department of Obstetrics and Gynecology, University of North Carolina-Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Kim A Boggess
- Department of Obstetrics and Gynecology, University of North Carolina-Chapel Hill , Chapel Hill, North Carolina 27599, United States
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Human pluripotent stem cells as a model of trophoblast differentiation in both normal development and disease. Proc Natl Acad Sci U S A 2016; 113:E3882-91. [PMID: 27325764 DOI: 10.1073/pnas.1604747113] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Trophoblast is the primary epithelial cell type in the placenta, a transient organ required for proper fetal growth and development. Different trophoblast subtypes are responsible for gas/nutrient exchange (syncytiotrophoblasts, STBs) and invasion and maternal vascular remodeling (extravillous trophoblasts, EVTs). Studies of early human placental development are severely hampered by the lack of a representative trophoblast stem cell (TSC) model with the capacity for self-renewal and the ability to differentiate into both STBs and EVTs. Primary cytotrophoblasts (CTBs) isolated from early-gestation (6-8 wk) human placentas are bipotential, a phenotype that is lost with increasing gestational age. We have identified a CDX2(+)/p63(+) CTB subpopulation in the early postimplantation human placenta that is significantly reduced later in gestation. We describe a reproducible protocol, using defined medium containing bone morphogenetic protein 4 by which human pluripotent stem cells (hPSCs) can be differentiated into CDX2(+)/p63(+) CTB stem-like cells. These cells can be replated and further differentiated into STB- and EVT-like cells, based on marker expression, hormone secretion, and invasive ability. As in primary CTBs, differentiation of hPSC-derived CTBs in low oxygen leads to reduced human chorionic gonadotropin secretion and STB-associated gene expression, instead promoting differentiation into HLA-G(+) EVTs in an hypoxia-inducible, factor-dependent manner. To validate further the utility of hPSC-derived CTBs, we demonstrated that differentiation of trisomy 21 (T21) hPSCs recapitulates the delayed CTB maturation and blunted STB differentiation seen in T21 placentae. Collectively, our data suggest that hPSCs are a valuable model of human placental development, enabling us to recapitulate processes that result in both normal and diseased pregnancies.
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75
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Motomura K, Oikawa M, Hirose M, Honda A, Togayachi S, Miyoshi H, Ohinata Y, Sugimoto M, Abe K, Inoue K, Ogura A. Cellular Dynamics of Mouse Trophoblast Stem Cells: Identification of a Persistent Stem Cell Type. Biol Reprod 2016; 94:122. [PMID: 27122635 PMCID: PMC6702784 DOI: 10.1095/biolreprod.115.137125] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 04/19/2016] [Indexed: 12/11/2022] Open
Abstract
Mouse trophoblast stem cells (TSCs) proliferate indefinitely in vitro, despite their highly heterogeneous nature. In this study, we sought to characterize TSC colony types by using methods based on cell biology and biochemistry for a better understanding of how TSCs are maintained over multiple passages. Colonies of TSCs could be classified into four major types: type 1 is compact and dome-shaped, type 4 is flattened but with a large multilayered cell cluster, and types 2 and 3 are their intermediates. A time-lapse analysis indicated that type 1 colonies predominantly appeared after passaging, and a single type 1 colony gave rise to all other types. These colony transitions were irreversible, but at least some type 1 colonies persisted throughout culture. The typical cells comprising type 1 colonies were small and highly motile, and they aggregated together to form primary colonies. A hierarchical clustering based on global gene expression profiles suggested that a TSC line containing more type 1 colony cells was similar to in vivo extraembryonic tissues. Among the known TSC genes examined, Elf5 showed a differential expression pattern according to colony type, indicating that this gene might be a reliable marker of undifferentiated TSCs. When aggregated with fertilized embryos, cells from types 1 and 2, but not from type 4, distributed to the polar trophectoderm in blastocysts. These findings indicate that cells typically found in type 1 colonies can persist indefinitely as stem cells and are responsible for the maintenance of TSC lines. They may provide key information for future improvements in the quality of TSC lines.
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Affiliation(s)
- Kaori Motomura
- RIKEN BioResource Center, Tsukuba, Japan Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Japan
| | | | | | - Arata Honda
- RIKEN BioResource Center, Tsukuba, Japan Organization for Promotion of Tenure Track, University of Miyazaki, Miyazaki, Japan
| | | | - Hiroyuki Miyoshi
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Yasuhide Ohinata
- Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan
| | | | - Kuniya Abe
- RIKEN BioResource Center, Tsukuba, Japan Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Japan
| | - Kimiko Inoue
- RIKEN BioResource Center, Tsukuba, Japan Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Japan
| | - Atsuo Ogura
- RIKEN BioResource Center, Tsukuba, Japan Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Japan The Center for Disease Biology and Integrative Medicine, Faculty of Medicine, University of Tokyo, Tokyo, Japan
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76
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Weber M, Göhner C, San Martin S, Vattai A, Hutter S, Parraga M, Jeschke U, Schleussner E, Markert UR, Fitzgerald JS. Unique trophoblast stem cell- and pluripotency marker staining patterns depending on gestational age and placenta-associated pregnancy complications. Cell Adh Migr 2016; 10:56-65. [PMID: 26914354 DOI: 10.1080/19336918.2016.1142035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Preeclampsia (PE) and intrauterine growth retardation (IUGR) are rare but severe pregnancy complications that are associated with placental insufficiency often resulting in premature birth. The clinical pathologies are related to gross placental pathologies and trophoblastic deficiencies that might derive from inflammatory processes and oxidative stress injury. The mesenchymal core of placental villi has been identified as a possible niche for trophoblast progenitor cells that are called upon to replenish the injured syncytiotrophoblast layer. These progenitor cells are known to express trophoblast stem cell (CDX2) and pluripotency (SOX2, NANOG and OCT4A) markers, however only little data is available characterizing the expression of these transcription factors beyond the blastocyst stage. We aimed to describe the expression of these factors in healthy 1st and 3rd trimester placentae as well as PE, IUGR and combined PE+IUGR placentae. We analyzed 8 respective samples derived from 1st trimester (elective abortions), and 3rd trimester (healthy controls, PE, IUGR and combined PE+IUGR). We accomplished immunoperoxidase staining to detect the stem cell markers: CDX2 (trophectoderm), SOX2, NANOG and OCT4A (embryonal). Immunoreative scoring was used for objective analyses of staining patterns. All markers display clearly elevated signals in 1st trimester villous samples as compared to healthy 3rd trimester counterparts. Especially CDX2 and NANOG were specific to the cytotrophoblast layer and the mesenchymal core. Specific and differential expression patterns were visible in the villous/extravillous compartment of each placenta-associated pregnancy complication (PE: pan elevated expression; IUGR elevated SOX2 in basal plate; combined PE+IUGR pan loss of expression). Reduction of stem cell transcription factor expression in term placentae indicates temporal regulation, and probably a specific function which is yet to be elucidated. The differential expression patterns within placentae complicated with placenta-associated pregnancy complications indicate that PE, IUGR and combined PE+IUGR are separate entities. It is unclear whether the alterations are the cause or the effect of the clinical pathology.
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Affiliation(s)
- Maja Weber
- a Department of Obstetrics , Placenta Lab, University Hospital Jena , Jena , Germany
| | - Claudia Göhner
- a Department of Obstetrics , Placenta Lab, University Hospital Jena , Jena , Germany.,b Department of Obstetrics and Gynecology , University Medical Center Groningen, University of Groningen , Groningen , The Netherlands
| | - Sebastian San Martin
- c Biomedical Research Center, School of Medicine, Universidad de Valparaiso , Chile
| | - Aurelia Vattai
- d Department of Obstetrics and Gynecology , Ludwig Maximilians University of Munich , Munich , Germany
| | - Stefan Hutter
- d Department of Obstetrics and Gynecology , Ludwig Maximilians University of Munich , Munich , Germany
| | - Mario Parraga
- c Biomedical Research Center, School of Medicine, Universidad de Valparaiso , Chile
| | - Udo Jeschke
- d Department of Obstetrics and Gynecology , Ludwig Maximilians University of Munich , Munich , Germany
| | - Ekkehard Schleussner
- a Department of Obstetrics , Placenta Lab, University Hospital Jena , Jena , Germany
| | - Udo R Markert
- a Department of Obstetrics , Placenta Lab, University Hospital Jena , Jena , Germany
| | - Justine S Fitzgerald
- a Department of Obstetrics , Placenta Lab, University Hospital Jena , Jena , Germany.,e Praxisklinik am Anger, Kinderwunschzentrum Erfurt , Erfurt , Germany
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77
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James JL, Hurley DG, Gamage TKJB, Zhang T, Vather R, Pantham P, Murthi P, Chamley LW. Isolation and characterisation of a novel trophoblast side-population from first trimester placentae. Reproduction 2015; 150:449-62. [DOI: 10.1530/rep-14-0646] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 08/06/2015] [Indexed: 12/18/2022]
Abstract
The placenta is responsible for all nutrient and gas exchange between mother and baby during pregnancy. The differentiation of specialised placental epithelial cells called trophoblasts is essential for placental function, but we understand little about how these populations arise. Mouse trophoblast stem cells have allowed us to understand many of the factors that regulate murine trophoblast lineage development, but the human placenta is anatomically very different from the mouse, and it is imperative to isolate a human trophoblast stem cell to understand human placental development. Here we have developed a novel methodology to isolate a Hoechst side-population of trophoblasts from early gestation placentae and compared their transcriptome to differentiated trophoblast populations (cytotrophoblasts and extravillous trophoblasts) using microarray technology. Side-population trophoblasts clustered as a transcriptomically distinct population but were more closely related to cytotrophoblasts than extravillous trophoblasts. Side-population trophoblasts up-regulated a number of genes characteristic of trophectoderm and murine trophoblast stem cells in comparison to cytotrophoblasts or extravillous trophoblasts and could be distinguished from both of these more mature populations by a unique set of 22 up-regulated genes, which were enriched for morphogenesis and organ development and the regulation of growth functions. Cells expressing two of these genes (LAMA2 and COL6A3) were distributed throughout the cytotrophoblast layer at the trophoblast/mesenchymal interface. Comparisons to previously published trophoblast progenitor populations suggest that the side-population trophoblasts isolated in this work are a novel human trophoblast population. Future work will determine whether these cells exhibit functional progenitor/stem cell attributes.
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78
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Kubaczka C, Senner C, Cierlitza M, Araúzo-Bravo M, Kuckenberg P, Peitz M, Hemberger M, Schorle H. Direct Induction of Trophoblast Stem Cells from Murine Fibroblasts. Cell Stem Cell 2015; 17:557-68. [DOI: 10.1016/j.stem.2015.08.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 05/27/2015] [Accepted: 08/06/2015] [Indexed: 01/24/2023]
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79
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Lee YL, Fong SW, Chen AC, Li T, Yue C, Lee CL, Ng EH, Yeung WS, Lee KF. Establishment of a novel human embryonic stem cell-derived trophoblastic spheroid implantation model. Hum Reprod 2015; 30:2614-26. [DOI: 10.1093/humrep/dev223] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 08/14/2015] [Indexed: 12/27/2022] Open
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80
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Yao B, Zhao J, Li Y, Li H, Hu Z, Pan P, Zhang Y, Du E, Liu R, Xu Y. Elf5 inhibits TGF-β-driven epithelial-mesenchymal transition in prostate cancer by repressing SMAD3 activation. Prostate 2015; 75:872-82. [PMID: 25728398 DOI: 10.1002/pros.22970] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 01/02/2014] [Indexed: 01/14/2023]
Abstract
BACKGROUND The epithelial-mesenchymal transition (EMT) has been associated with the acquisition of migration, invasiveness, and metastasis traits. During tumor progression, EMT can be induced by transforming growth factor-β (TGF-β) signal that epithelial cells receive from their microenvironment. However, the master regulatory controls on TGF-β-EMT axis are not understood. METHODS The protein expression in human specimens was measured by immunohistochemical staining. E74-like factor 5 (Elf5) was silenced by short interfering RNAs in LNCaP cells and stably overexpressed by HA-tagged Elf5 cDNAs in 22Rv1 cells. These cells were used to study migration and anchorage-independent growth. RESULTS Our data reveal that Elf5 results in the failure of mesenchymal morphogenesis, upregulation of EMT markers, spheres formation, and migration in the presence of TGF-β. Furthermore, Elf5 blocks TGF-β signaling, through decreasing drosophila mothers against decapentaplegic protein (SMAD3) activation by binding to it, one of the major effector of TGF-β-induced EMT. Moreover, Elf5 can serve as a prognostic marker of metastasis-free survival in patients with TGF-β-positive prostate cancer. CONCLUSIONS Elf5 expression is inversely correlated with EMT. Elf5 inhibits TGF-β-driven EMT via repressing SMAD3 phosphorylation in prostate cancer cells. In addition, Elf5 can be used as a biomarker of metastasis-free survival in patients with TGF-β-positive prostate cancer.
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Affiliation(s)
- Bing Yao
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
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81
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Soares MJ, Chakraborty D, Kubota K, Renaud SJ, Rumi MAK. Adaptive mechanisms controlling uterine spiral artery remodeling during the establishment of pregnancy. THE INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY 2015; 58:247-59. [PMID: 25023691 DOI: 10.1387/ijdb.140083ms] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Implantation of the embryo into the uterus triggers the initiation of hemochorial placentation. The hemochorial placenta facilitates the acquisition of maternal resources required for embryo/fetal growth. Uterine spiral arteries form the nutrient supply line for the placenta and fetus. This vascular conduit undergoes gestation stage-specific remodeling directed by maternal natural killer cells and embryo-derived invasive trophoblast lineages. The placentation site, including remodeling of the uterine spiral arteries, is shaped by environmental challenges. In this review, we discuss the cellular participants controlling pregnancy-dependent uterine spiral artery remodeling and mechanisms responsible for their development and function.
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Affiliation(s)
- Michael J Soares
- Institute for Reproductive Health and Regenerative Medicine, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA.
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82
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Li Y, Parast MM. BMP4 regulation of human trophoblast development. THE INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY 2015; 58:239-46. [PMID: 25023690 DOI: 10.1387/ijdb.130341mp] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Since the derivation of human embryonic stem cells, and the subsequent generation of induced pluripotent stem cells, there has been much excitement about the ability to model and evaluate human organ development in vitro. The finding that these cells, when treated with BMP4, are able to generate the extraembryonic cell type, trophoblast, which is the predominant functional epithelium in the placenta, has not been widely accepted. This review evaluates this model, providing comparison to early known events during placentation in both human and mouse and addresses specific challenges. Keeping in mind the ultimate goal of understanding human placental development and pregnancy disorders, our aim here is two-fold: to distinguish gaps in our knowledge arising from mis- or over-interpretation of data, and to recognize the limitations of both mouse and human models, but to work within those limitations towards the ultimate goal.
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Affiliation(s)
- Yingchun Li
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
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83
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Sarkar P, Randall SM, Collier TS, Nero A, Russell TA, Muddiman DC, Rao BM. Activin/nodal signaling switches the terminal fate of human embryonic stem cell-derived trophoblasts. J Biol Chem 2015; 290:8834-48. [PMID: 25670856 DOI: 10.1074/jbc.m114.620641] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Indexed: 11/06/2022] Open
Abstract
Human embryonic stem cells (hESCs) have been routinely treated with bone morphogenetic protein and/or inhibitors of activin/nodal signaling to obtain cells that express trophoblast markers. Trophoblasts can terminally differentiate to either extravillous trophoblasts or syncytiotrophoblasts. The signaling pathways that govern the terminal fate of these trophoblasts are not understood. We show that activin/nodal signaling switches the terminal fate of these hESC-derived trophoblasts. Inhibition of activin/nodal signaling leads to formation of extravillous trophoblast, whereas loss of activin/nodal inhibition leads to the formation of syncytiotrophoblasts. Also, the ability of hESCs to form bona fide trophoblasts has been intensely debated. We have examined hESC-derived trophoblasts in the light of stringent criteria that were proposed recently, such as hypomethylation of the ELF5-2b promoter region and down-regulation of HLA class I antigens. We report that trophoblasts that possess these properties can indeed be obtained from hESCs.
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Affiliation(s)
| | - Shan M Randall
- the W. M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, and
| | - Timothy S Collier
- the W. M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, and
| | - Anthony Nero
- From the Department of Chemical and Biomolecular Engineering
| | - Teal A Russell
- the Department of Biochemistry, North Carolina State University, Raleigh, North Carolina 27695
| | - David C Muddiman
- the W. M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, and
| | - Balaji M Rao
- From the Department of Chemical and Biomolecular Engineering,
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84
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Epigenetic regulation of Elf5 is associated with epithelial-mesenchymal transition in urothelial cancer. PLoS One 2015; 10:e0117510. [PMID: 25629735 PMCID: PMC4309403 DOI: 10.1371/journal.pone.0117510] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 12/29/2014] [Indexed: 01/11/2023] Open
Abstract
E74-like factor 5 (Elf5) has been associated with tumor suppression in breast cancer. However, its role in urothelial cancer (UC) is completely unknown. Immunohistochemistry (IHC) and methylation specific PCR (MSP) were done to detect Elf5 expression level and its promoter methylation. Results revealed that low expression of Elf5 on protein and mRNA levels were associated with tumor progression, early relapse and poor survival. In vitro, down-regulation of Elf5 can increase epithelial-mesenchymal transition (EMT). Aberrant Elf5 methylation was identified as major mechanism for Elf5 gene silence. Accordingly, restoration of Elf5 by infection or demethylating treatment effectively reversed EMT processes. In conclusion, we identified Elf5 as a novel biomarker of UC on several biological levels and established a causative link between Elf5 and EMT in UC.
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85
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Kunath T, Yamanaka Y, Detmar J, MacPhee D, Caniggia I, Rossant J, Jurisicova A. Developmental differences in the expression of FGF receptors between human and mouse embryos. Placenta 2014; 35:1079-88. [DOI: 10.1016/j.placenta.2014.09.008] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/09/2014] [Accepted: 09/13/2014] [Indexed: 11/30/2022]
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86
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Soncin F, Natale D, Parast MM. Signaling pathways in mouse and human trophoblast differentiation: a comparative review. Cell Mol Life Sci 2014; 72:1291-302. [PMID: 25430479 DOI: 10.1007/s00018-014-1794-x] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/02/2014] [Accepted: 11/20/2014] [Indexed: 12/01/2022]
Abstract
The mouse is often used as a model for understanding human placentation and offers multiple advantages, including the ability to manipulate gene expression in specific compartments and to derive trophoblast stem cells, which can be maintained or differentiated in vitro. Nevertheless, there are numerous differences between the mouse and human placentas, only the least of which are structural. This review aims to compare mouse and human placentation, with a focus on signaling pathways involved in trophoblast lineage-specific differentiation.
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Affiliation(s)
- Francesca Soncin
- Department of Pathology, Sanford Consortium for Regenerative Medicine, University of California San Diego, 9500 Gilman Drive, MC 0695, La Jolla, CA, 92093, USA,
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87
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Cambuli F, Murray A, Dean W, Dudzinska D, Krueger F, Andrews S, Senner CE, Cook SJ, Hemberger M. Epigenetic memory of the first cell fate decision prevents complete ES cell reprogramming into trophoblast. Nat Commun 2014; 5:5538. [PMID: 25423963 PMCID: PMC4263130 DOI: 10.1038/ncomms6538] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 10/10/2014] [Indexed: 12/17/2022] Open
Abstract
Embryonic (ES) and trophoblast (TS) stem cells reflect the first, irrevocable cell fate decision in development that is reinforced by distinct epigenetic lineage barriers. Nonetheless, ES cells can seemingly acquire TS-like characteristics upon manipulation of lineage-determining transcription factors or activation of the extracellular signal-regulated kinase 1/2 (Erk1/2) pathway. Here we have interrogated the progression of reprogramming in ES cell models with regulatable Oct4 and Cdx2 transgenes or conditional Erk1/2 activation. Although trans-differentiation into TS-like cells is initiated, lineage conversion remains incomplete in all models, underpinned by the failure to demethylate a small group of TS cell genes. Forced expression of these non-reprogrammed genes improves trans-differentiation efficiency, but still fails to confer a stable TS cell phenotype. Thus, even ES cells in ground-state pluripotency cannot fully overcome the boundaries that separate the first cell lineages but retain an epigenetic memory of their ES cell origin.
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Affiliation(s)
- Francesco Cambuli
- Epigenetics Programme, The Babraham Institute, Cambridge CB22 3AT, UK
- Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
| | - Alexander Murray
- Epigenetics Programme, The Babraham Institute, Cambridge CB22 3AT, UK
- Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
| | - Wendy Dean
- Epigenetics Programme, The Babraham Institute, Cambridge CB22 3AT, UK
| | - Dominika Dudzinska
- Epigenetics Programme, The Babraham Institute, Cambridge CB22 3AT, UK
- Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
| | - Felix Krueger
- Bioinformatics Group, The Babraham Institute, Cambridge CB22 3AT, UK
| | - Simon Andrews
- Bioinformatics Group, The Babraham Institute, Cambridge CB22 3AT, UK
| | - Claire E. Senner
- Epigenetics Programme, The Babraham Institute, Cambridge CB22 3AT, UK
- Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
| | - Simon J. Cook
- Signalling Programme, The Babraham Institute, Cambridge CB22 3AT, UK
| | - Myriam Hemberger
- Epigenetics Programme, The Babraham Institute, Cambridge CB22 3AT, UK
- Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
- Wellcome Trust—Medical Research Council Cambridge Stem Cell Institute, Tennis Court Road, Cambridge CB2 1QR, UK
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88
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Knott JG, Paul S. Transcriptional regulators of the trophoblast lineage in mammals with hemochorial placentation. Reproduction 2014; 148:R121-36. [PMID: 25190503 DOI: 10.1530/rep-14-0072] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mammalian reproduction is critically dependent on the trophoblast cell lineage, which assures proper establishment of maternal-fetal interactions during pregnancy. Specification of trophoblast cell lineage begins with the development of the trophectoderm (TE) in preimplantation embryos. Subsequently, other trophoblast cell types arise with the progression of pregnancy. Studies with transgenic animal models as well as trophoblast stem/progenitor cells have implicated distinct transcriptional and epigenetic regulators in trophoblast lineage development. This review focuses on our current understanding of transcriptional and epigenetic mechanisms regulating specification, determination, maintenance and differentiation of trophoblast cells.
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Affiliation(s)
- Jason G Knott
- Developmental Epigenetics LaboratoryDepartment of Animal Science, Michigan State University, East Lansing, Michigan 48824, USADepartment of Pathology and Laboratory MedicineInstitute of Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Soumen Paul
- Developmental Epigenetics LaboratoryDepartment of Animal Science, Michigan State University, East Lansing, Michigan 48824, USADepartment of Pathology and Laboratory MedicineInstitute of Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
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Chenthuran T, Galhenagey GH, Jayasekara RW, Dissanayake VHW. Polymorphism in the epidermal growth factor gene is associated with pre-eclampsia and low birthweight. J Obstet Gynaecol Res 2014; 40:1235-42. [DOI: 10.1111/jog.12362] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 11/20/2013] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Rohan W. Jayasekara
- Human Genetics Unit; Faculty of Medicine; University of Colombo; Colombo Sri Lanka
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90
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Roberts RM, Loh KM, Amita M, Bernardo AS, Adachi K, Alexenko AP, Schust DJ, Schulz LC, Telugu BPVL, Ezashi T, Pedersen RA. Differentiation of trophoblast cells from human embryonic stem cells: to be or not to be? Reproduction 2014; 147:D1-12. [PMID: 24518070 DOI: 10.1530/rep-14-0080] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
It is imperative to unveil the full range of differentiated cell types into which human pluripotent stem cells (hPSCs) can develop. The need is twofold: it will delimit the therapeutic utility of these stem cells and is necessary to place their position accurately in the developmental hierarchy of lineage potential. Accumulated evidence suggested that hPSC could develop in vitro into an extraembryonic lineage (trophoblast (TB)) that is typically inaccessible to pluripotent embryonic cells during embryogenesis. However, whether these differentiated cells are truly authentic TB has been challenged. In this debate, we present a case for and a case against TB differentiation from hPSCs. By analogy to other differentiation systems, our debate is broadly applicable, as it articulates higher and more challenging standards for judging whether a given cell type has been genuinely produced from hPSC differentiation.
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91
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Zydek M, Petitt M, Fang-Hoover J, Adler B, Kauvar LM, Pereira L, Tabata T. HCMV infection of human trophoblast progenitor cells of the placenta is neutralized by a human monoclonal antibody to glycoprotein B and not by antibodies to the pentamer complex. Viruses 2014; 6:1346-64. [PMID: 24651029 PMCID: PMC3970154 DOI: 10.3390/v6031346] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 02/27/2014] [Accepted: 02/27/2014] [Indexed: 12/17/2022] Open
Abstract
Human cytomegalovirus (HCMV) is the major viral cause of congenital infection and birth defects. Primary maternal infection often results in virus transmission, and symptomatic babies can have permanent neurological deficiencies and deafness. Congenital infection can also lead to intrauterine growth restriction, a defect in placental transport. HCMV replicates in primary cytotrophoblasts (CTBs), the specialized cells of the placenta, and inhibits differentiation/invasion. Human trophoblast progenitor cells (TBPCs) give rise to the mature cell types of the chorionic villi, CTBs and multi-nucleated syncytiotrophoblasts (STBs). Here we report that TBPCs are fully permissive for pathogenic and attenuated HCMV strains. Studies with a mutant virus lacking a functional pentamer complex (gH/gL/pUL128-131A) showed that virion entry into TBPCs is independent of the pentamer. In addition, infection is blocked by a potent human neutralizing monoclonal antibody (mAb), TRL345, reactive with glycoprotein B (gB), but not mAbs to the pentamer proteins pUL130/pUL131A. Functional studies revealed that neutralization of infection preserved the capacity of TBPCs to differentiate and assemble into trophospheres composed of CTBs and STBs in vitro. Our results indicate that mAbs to gB protect trophoblast progenitors of the placenta and could be included in antibody treatments developed to suppress congenital infection and prevent disease.
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Affiliation(s)
- Martin Zydek
- Department of Cell and Tissue Biology, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA.
| | - Matthew Petitt
- Department of Cell and Tissue Biology, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA.
| | - June Fang-Hoover
- Department of Cell and Tissue Biology, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA.
| | - Barbara Adler
- Division of Virology, Max von Pettenkofer-Institute, Ludwig-Maximilians-University Munich, Pettenkoferstr. 9A, D-80336 Munich, Germany.
| | - Lawrence M Kauvar
- Trellis Bioscience, LLC, 2-B Corporate Drive, South San Francisco, CA 94080, USA.
| | - Lenore Pereira
- Department of Cell and Tissue Biology, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA.
| | - Takako Tabata
- Department of Cell and Tissue Biology, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA.
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92
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Gallego-Ortega D, Oakes SR, Lee HJ, Piggin CL, Ormandy CJ. ELF5, normal mammary development and the heterogeneous phenotypes of breast cancer. BREAST CANCER MANAGEMENT 2013. [DOI: 10.2217/bmt.13.50] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
SUMMARY The ETS transcription factor ELF5 specifies the formation of the secretory cell lineage of the mammary gland during pregnancy, by directing cell fate decisions of the mammary progenitor cells. The decision-making activity continues in breast cancer, where in luminal breast cancer cells forced ELF5 expression suppresses estrogen sensitivity and shifts gene expression toward the basal molecular subtype. The development of anti-estrogen resistance in luminal breast cancer is accompanied by increased expression of ELF5 and acquired dependence on ELF5 for continued proliferation, providing a potential new therapeutic target or prognostic marker to improve the treatment of this stage of the disease. Forced ELF5 expression suppresses the mesenchymal phenotype, making cells more epithelial and producing lower rates of invasion and motility. Conversely, loss of ELF5 promotes metastasis, with a clear corollary in the claudin-low subtype of breast cancer, which does not express ELF5 and is highly metastatic, or during the final stages of tumor progression, where loss of ELF5 expression may be involved in the acquisition of the lethal phenotype. In circumstances where ELF5 expression increases in parallel with metastatic potential, such as anti-estrogen resistant luminal breast cancers and basal breast cancer, there is much more to be understood about ELF5 and metastasis.
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Affiliation(s)
- David Gallego-Ortega
- Cancer Research Program, Garvan Institute of Medical Research & The Kinghorn Cancer Centre, 384 Victoria Street, Darlinghurst, NSW 2010, Australia
- St Vincent‘s Clinical School, St Vincent‘s Hospital Faculty of Medicine, University of New South Wales, NSW, Australia
| | - Samantha R Oakes
- Cancer Research Program, Garvan Institute of Medical Research & The Kinghorn Cancer Centre, 384 Victoria Street, Darlinghurst, NSW 2010, Australia
- St Vincent‘s Clinical School, St Vincent‘s Hospital Faculty of Medicine, University of New South Wales, NSW, Australia
| | - Heather J Lee
- Cancer Research Program, Garvan Institute of Medical Research & The Kinghorn Cancer Centre, 384 Victoria Street, Darlinghurst, NSW 2010, Australia
- St Vincent‘s Clinical School, St Vincent‘s Hospital Faculty of Medicine, University of New South Wales, NSW, Australia
| | - Catherine L Piggin
- Cancer Research Program, Garvan Institute of Medical Research & The Kinghorn Cancer Centre, 384 Victoria Street, Darlinghurst, NSW 2010, Australia
- St Vincent‘s Clinical School, St Vincent‘s Hospital Faculty of Medicine, University of New South Wales, NSW, Australia
| | - Christopher J Ormandy
- Cancer Research Program, Garvan Institute of Medical Research & The Kinghorn Cancer Centre, 384 Victoria Street, Darlinghurst, NSW 2010, Australia
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93
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Abstract
The mammalian placenta exhibits elevated expression of endogenous retroviruses (ERVs), but the evolutionary significance of this feature remains unclear. I propose that ERV-mediated regulatory evolution was, and continues to be, an important mechanism underlying the evolution of placental development. Many recent studies have focused on the co-option of ERV-derived genes for specific functional adaptations in the placenta. However, the co-option of ERV-derived regulatory elements could potentially lead to the incorporation of entire gene regulatory networks, which, I argue, would facilitate relatively rapid developmental evolution of the placenta. I suggest a model in which an ancient retroviral infection led to the establishment of the ancestral placental developmental gene network through the co-option of ERV-derived regulatory elements. Consequently, placental development would require elevated tolerance to ERV activity. This in turn would expose a continuous stream of novel ERV mutations that may have catalyzed the developmental diversification of the mammalian placenta.
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Affiliation(s)
- Edward B Chuong
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
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94
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Li Y, Moretto-Zita M, Soncin F, Wakeland A, Wolfe L, Leon-Garcia S, Pandian R, Pizzo D, Cui L, Nazor K, Loring JF, Crum CP, Laurent LC, Parast MM. BMP4-directed trophoblast differentiation of human embryonic stem cells is mediated through a ΔNp63+ cytotrophoblast stem cell state. Development 2013; 140:3965-76. [PMID: 24004950 DOI: 10.1242/dev.092155] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The placenta is a transient organ that is necessary for proper fetal development. Its main functional component is the trophoblast, which is derived from extra-embryonic ectoderm. Little is known about early trophoblast differentiation in the human embryo, owing to lack of a proper in vitro model system. Human embryonic stem cells (hESCs) differentiate into functional trophoblast following BMP4 treatment in the presence of feeder-conditioned media; however, this model has not been widely accepted, in part owing to a lack of proof for a trophoblast progenitor population. We have previously shown that p63, a member of the p53 family of nuclear proteins, is expressed in proliferative cytotrophoblast (CTB), precursors to terminally differentiated syncytiotrophoblast (STB) in chorionic villi and extravillous trophoblast (EVT) at the implantation site. Here, we show that BMP4-treated hESCs differentiate into bona fide CTB by direct comparison with primary human placental tissues and isolated CTB through gene expression profiling. We show that, in primary CTB, p63 levels are reduced as cells differentiate into STB, and that forced expression of p63 maintains cyclin B1 and inhibits STB differentiation. We also establish that, similar to in vivo events, hESC differentiation into trophoblast is characterized by a p63(+)/KRT7(+) CTB stem cell state, followed by formation of functional KLF4(+) STB and HLA-G(+) EVT. Finally, we illustrate that downregulation of p63 by shRNA inhibits differentiation of hESCs into functional trophoblast. Taken together, our results establish that BMP4-treated hESCs are an excellent model of human trophoblast differentiation, closely mimicking the in vivo progression from p63(+) CTB stem cells to terminally differentiated trophoblast subtypes.
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Affiliation(s)
- Yingchun Li
- Department of Pathology, University of California San Diego, La Jolla, CA 92093, USA
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95
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Fock V, Mairhofer M, Otti GR, Hiden U, Spittler A, Zeisler H, Fiala C, Knöfler M, Pollheimer J. Macrophage-derived IL-33 is a critical factor for placental growth. THE JOURNAL OF IMMUNOLOGY 2013; 191:3734-43. [PMID: 23997215 DOI: 10.4049/jimmunol.1300490] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
IL-33, the most recently discovered member of the IL-1 superfamily and ligand for the transmembrane form of ST2 (ST2L), has been linked to several human pathologies including rheumatoid arthritis, asthma, and cardiovascular disease. Deregulated levels of soluble ST2, the natural IL-33 inhibitor, have been reported in sera of preeclamptic patients. However, the role of IL-33 during healthy pregnancy remains elusive. In the current study, IL-33 was detected in the culture supernatants of human placental and decidual macrophages, identifying them as a major source of secreted IL-33 in the uteroplacental unit. Because flow cytometry and immunofluorescence stainings revealed membranous ST2L expression on specific trophoblast populations, we hypothesized that IL-33 stimulates trophoblasts in a paracrine manner. Indeed, BrdU incorporation assays revealed that recombinant human IL-33 significantly increased proliferation of primary trophoblasts as well as of villous cytotrophoblasts and cell column trophoblasts in placental explant cultures. These effects were fully abolished upon addition of soluble ST2. Interestingly, Western blot and immunofluorescence analyses demonstrated that IL-33 activates AKT and ERK1/2 in primary trophoblasts and placental explants. Inhibitors against PI3K (LY294002) and MEK1/2 (UO126) efficiently blocked IL-33-induced proliferation in all model systems used. In summary, with IL-33, we define for the first time, to our knowledge, a macrophage-derived regulator of placental growth during early pregnancy.
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Affiliation(s)
- Valerie Fock
- Reproductive Biology Unit, Department of Obstetrics and Fetal-Maternal Medicine, Medical University of Vienna, 1090 Vienna, Austria
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96
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Betoni JS, Derr K, Pahl MC, Rogers L, Muller CL, Packard RE, Carey DJ, Kuivaniemi H, Tromp G. MicroRNA analysis in placentas from patients with preeclampsia: comparison of new and published results. Hypertens Pregnancy 2013; 32:321-39. [PMID: 23844600 DOI: 10.3109/10641955.2013.807819] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The aim was to identify differences in microRNA expression between patients with and without preeclampsia. METHODS Microarray-based study was carried out with placental samples. RESULTS Comparison of eight previous studies with the current study revealed a total of 138 microRNAs; only 20/138 (14%), however, were seen in more than one study and the results agreed in the direction of change. Bioinformatic analysis of these 20 microRNAs identified a wide range of biological functions including apoptosis and cell movement for their mRNA targets. CONCLUSION The associations between miRNA expression and preeclampsia suggest a potential role for microRNAs in preeclampsia pathobiology.
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Affiliation(s)
- James S Betoni
- Department of Maternal Fetal Medicine, Geisinger Clinic , Danville, PA , USA
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97
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Aplin J. The Evolution of the Human Placenta. By Michael L. Power and JaySchulkin. 266 pp. Baltimore MD: Johns Hopkins University Press. 2012. $85.00 (cloth). Am J Hum Biol 2013. [DOI: 10.1002/ajhb.22391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- John Aplin
- Maternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences; University of Manchester; United Kingdom
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98
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HTR8/SVneo cells display trophoblast progenitor cell-like characteristics indicative of self-renewal, repopulation activity, and expression of "stemness-" associated transcription factors. BIOMED RESEARCH INTERNATIONAL 2013; 2013:243649. [PMID: 23586024 PMCID: PMC3615586 DOI: 10.1155/2013/243649] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2012] [Revised: 01/10/2013] [Accepted: 01/16/2013] [Indexed: 12/12/2022]
Abstract
Introduction. JEG3 is a choriocarcinoma—and HTR8/SVneo a transformed extravillous trophoblast—cell line often used to model the physiologically invasive extravillous trophoblast. Past studies suggest that these cell lines possess some stem or progenitor cell characteristics. Aim was to study whether these cells fulfill minimum criteria used to identify stem-like (progenitor) cells. In summary, we found that the expression profile of HTR8/SVneo (CDX2+, NOTCH1+, SOX2+, NANOG+, and OCT-) is distinct from JEG3 (CDX2+ and NOTCH1+) as seen only in human-serum blocked immunocytochemistry. This correlates with HTR8/SVneo's self-renewal capacities, as made visible via spheroid formation and multi-passagability in hanging drops protocols paralleling those used to maintain embryoid bodies. JEG3 displayed only low propensity to form and reform spheroids. HTR8/SVneo spheroids migrated to cover and seemingly repopulate human chorionic villi during confrontation cultures with placental explants in hanging drops. We conclude that HTR8/SVneo spheroid cells possess progenitor cell traits that are probably attained through corruption of “stemness-” associated transcription factor networks. Furthermore, trophoblastic cells are highly prone to unspecific binding, which is resistant to conventional blocking methods, but which can be alleviated through blockage with human serum.
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99
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Complete and unidirectional conversion of human embryonic stem cells to trophoblast by BMP4. Proc Natl Acad Sci U S A 2013; 110:E1212-21. [PMID: 23493551 DOI: 10.1073/pnas.1303094110] [Citation(s) in RCA: 194] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Human ES cells (hESC) exposed to bone morphogenic protein 4 (BMP4) in the absence of FGF2 have become widely used for studying trophoblast development, but the soundness of this model has been challenged by others, who concluded that differentiation was primarily toward mesoderm rather than trophoblast. Here we confirm that hESC grown under the standard conditions on a medium conditioned by mouse embryonic fibroblasts in the presence of BMP4 and absence of FGF2 on a Matrigel substratum rapidly convert to an epithelium that is largely KRT7(+) within 48 h, with minimal expression of mesoderm markers, including T (Brachyury). Instead, they begin to express a series of trophoblast markers, including HLA-G, demonstrate invasive properties that are independent of the continued presence of BMP4 in the medium, and, over time, produce extensive amounts of human chorionic gonadotropin, progesterone, placental growth factor, and placental lactogen. This process of differentiation is not dependent on conditioning of the medium by mouse embryonic fibroblasts and is accelerated in the presence of inhibitors of Activin and FGF2 signaling, which at day 2 provide colonies that are entirely KRT7(+) and in which the majority of cells are transiently CDX2(+). Colonies grown on two chemically defined media, including the one in which BMP4 was reported to drive mesoderm formation, also differentiate at least partially to trophoblast in response to BMP4. The experiments demonstrate that the in vitro BMP4/hESC model is valid for studying the emergence and differentiation of trophoblasts.
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100
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Niakan KK, Eggan K. Analysis of human embryos from zygote to blastocyst reveals distinct gene expression patterns relative to the mouse. Dev Biol 2013; 375:54-64. [PMID: 23261930 DOI: 10.1016/j.ydbio.2012.12.008] [Citation(s) in RCA: 248] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 11/29/2012] [Accepted: 12/11/2012] [Indexed: 12/18/2022]
Abstract
Early mammalian embryogenesis is controlled by mechanisms governing the balance between pluripotency and differentiation. The expression of early lineage-specific genes can vary significantly between species, with implications for developmental control and stem cell derivation. However, the mechanisms involved in patterning the human embryo are still unclear. We analyzed the appearance and localization of lineage-specific transcription factors in staged preimplantation human embryos from the zygote until the blastocyst. We observed that the pluripotency-associated transcription factor OCT4 was initially expressed in 8-cell embryos at 3 days post-fertilization (dpf), and restricted to the inner cell mass (ICM) in 128-256 cell blastocysts (6dpf), approximately 2 days later than the mouse. The trophectoderm (TE)-associated transcription factor CDX2 was upregulated in 5dpf blastocysts and initially coincident with OCT4, indicating a lag in CDX2 initiation in the TE lineage, relative to the mouse. Once established, the TE expressed intracellular and cell-surface proteins cytokeratin-7 (CK7) and fibroblast growth factor receptor-1 (FGFR1), which are thought to be specific to post-implantation human trophoblast progenitor cells. The primitive endoderm (PE)-associated transcription factor SOX17 was initially heterogeneously expressed in the ICM where it co-localized with a sub-set of OCT4 expressing cells at 4-5dpf. SOX17 was progressively restricted to the PE adjacent to the blastocoel cavity together with the transcription factor GATA6 by 6dpf. We observed low levels of Laminin expression in the human PE, though this basement membrane component is thought to play an important role in mouse PE cell sorting, suggesting divergence in differentiation mechanisms between species. Additionally, while stem cell lines representing the three distinct cell types that comprise a mouse blastocyst have been established, the identity of cell types that emerge during early human embryonic stem cell derivation is unclear. We observed that derivation from plating intact human blastocysts resulted predominantly in the outgrowth of TE-like cells, which impairs human embryonic stem cell derivation. Altogether, our findings provide important insight into developmental patterning of preimplantation human embryos with potential consequences for stem cell derivation.
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Affiliation(s)
- Kathy K Niakan
- The Howard Hughes Medical Institute, Harvard Stem Cell Institute and the Department of Stem Cell and Regenerative Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA.
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