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Ya A, Deng C, Godek KM. Cell Competition Eliminates Aneuploid Human Pluripotent Stem Cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.08.593217. [PMID: 38766106 PMCID: PMC11100710 DOI: 10.1101/2024.05.08.593217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Human pluripotent stem cells (hPSCs) maintain diploid populations for generations despite a persistently high rate of mitotic errors that cause aneuploidy, or chromosome imbalances. Consequently, to maintain genome stability, aneuploidy must inhibit hPSC proliferation, but the mechanisms are unknown. Here, we surprisingly find that homogeneous aneuploid populations of hPSCs proliferate unlike aneuploid non-transformed somatic cells. Instead, in mosaic populations, cell non-autonomous competition between neighboring diploid and aneuploid hPSCs eliminates less fit aneuploid cells. Aneuploid hPSCs with lower Myc or higher p53 levels relative to diploid neighbors are outcompeted but conversely gain a selective advantage when Myc and p53 relative abundance switches. Thus, although hPSCs frequently missegregate chromosomes and inherently tolerate aneuploidy, Myc- and p53-driven cell competition preserves their genome integrity. These findings have important implications for the use of hPSCs in regenerative medicine and for how diploid human embryos are established despite the prevalence of aneuploidy during early development.
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Affiliation(s)
- Amanda Ya
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Dartmouth Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Chenhui Deng
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Dartmouth Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Kristina M. Godek
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Dartmouth Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
- Lead contact
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2
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Wang X, Zhao J, Yao Z, Xia Q, Chang T, Zeng J, Liu J, Li Y, Zhu H. Arrested Cells/Cellular Debris Expelled from Blastocysts Is Self-Correction Phenomenon During Early Embryonic Development. Reprod Sci 2023; 30:2177-2187. [PMID: 36627481 PMCID: PMC10310642 DOI: 10.1007/s43032-022-01159-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 12/21/2022] [Indexed: 01/12/2023]
Abstract
Arrested cells/ cellular debris is component left in the zona pellucida after blastocyst hatching. To identify whether expelling arrested cells/cellular debris from blastocysts is a process of human embryo self-correction by eliminating abnormal cells, 21 pairs of trophectoderm (TE) biopsies and the corresponding arrested cells/cellular debris expelled from the blastocysts from July to December 2020 were collected and analyzed using next-generation sequencing (NGS). Then, the NGS results of TE biopsies and the corresponding arrested cells/cellular debris were compared. We identified that 47.6% of blastocysts (10/21) were aneuploidies and mosaicism. A total of 18 groups of arrested cells/cellular debris (85.7%) expelled from blastocysts were abnormal, including nine aneuploid embryos and nine euploid embryos. In the arrested cells/cellular debris, all the chromosomes were affected. In conclusion, mosaicism and aneuploidies are common features of early embryonic development, and the arrested cells/cellular debris expelled from blastocysts provides evidence of early embryonic self-correction.
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Affiliation(s)
- Xiaoxia Wang
- Department of Reproductive Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang, China
| | - Jing Zhao
- Department of Reproductive Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
- Clinical Research Center for Women's Reproductive Health in Hunan Province, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Zhongyuan Yao
- Department of Reproductive Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
- Clinical Research Center for Women's Reproductive Health in Hunan Province, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, 410000, Hunan, China
| | - Qiuping Xia
- Department of Reproductive Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
- Clinical Research Center for Women's Reproductive Health in Hunan Province, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Tianli Chang
- Department of Reproductive Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
- Clinical Research Center for Women's Reproductive Health in Hunan Province, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Jun Zeng
- Department of Reproductive Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Jiaqi Liu
- Yikon Genomics Company, Ltd, No.218, Xinghu Street, Suzhou, 215000, China
| | - Yanping Li
- Department of Reproductive Center, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
- Clinical Research Center for Women's Reproductive Health in Hunan Province, Xiangya Hospital, Central South University, Changsha, 410078, Hunan, China
| | - Huimin Zhu
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, 410000, Hunan, China.
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3
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Ceschin II, Ceschin AP, Joya MS, Mitsugi TG, Nishikawa LK, Krepischi AC, Okamoto OK. Functional assessment of donated human embryos for the generation of pluripotent embryonic stem cell lines. Reprod Biomed Online 2023; 46:491-501. [PMID: 36737274 DOI: 10.1016/j.rbmo.2022.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/26/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022]
Abstract
RESEARCH QUESTION Can discarded embryos at blastocyst stage, donated to research because of genetic abnormalities and poor morphological quality, become a reliable source of human embryonic stem cell (HESC) lines? DESIGN This study was consecutively conducted with 23 discarded embryos that were donated to research between February 2020 and April 2021. All embryos, except one, were morphologically evaluated and underwent trophectoderm biopsy for preimplantation genetic testing using next-generation sequencing (NGS), and then vitrified. After warming, the embryos were placed in appropriate culture conditions for the generation of HESCs, which was functionally assessed with immunofluorescence and flow cytometry for pluripotency capacity and spontaneous in-vitro differentiation. Cytogenetic assessment of the HESC was conducted with multiplex ligation-dependent probe amplification, and micro array comparative genomic hybridization. RESULTS From the 23 embryos initially included, 17 survived warming, and 16 of them presented viability. Overall, the embryos presented poor morphological quality after warming. Only the previously untested embryo was capable of generating a new HESC line. Further characterization of this line revealed fully functional, euploid HESCs with preserved pluripotency, becoming a useful resource for research into human development and therapeutic investigation. CONCLUSIONS None of the donated blastocysts with poor morphological quality in association with genetic abnormalities detected by NGS had the capacity for further in-vitro expansion to originate pluripotent HESC lines. This finding seems to provide extra support to genetic counselling on the suitability of this type of embryo for clinical use.
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Affiliation(s)
- Ianaê I Ceschin
- Human Genome and Stem Cells Research Center, Biosciences Institute, University of São Paulo (IB-USP), Rua do Matão, Travessa 14, 321-05508-090, São Paulo, Brazil; Feliccità Instituto de Fertilidade, Rua Conselheiro Dantas, 1154-80220-191, Curitiba, Brazil.
| | - Alvaro P Ceschin
- Feliccità Instituto de Fertilidade, Rua Conselheiro Dantas, 1154-80220-191, Curitiba, Brazil
| | - Maria S Joya
- Human Genome and Stem Cells Research Center, Biosciences Institute, University of São Paulo (IB-USP), Rua do Matão, Travessa 14, 321-05508-090, São Paulo, Brazil
| | - Thiago G Mitsugi
- Human Genome and Stem Cells Research Center, Biosciences Institute, University of São Paulo (IB-USP), Rua do Matão, Travessa 14, 321-05508-090, São Paulo, Brazil
| | - Lucileine K Nishikawa
- Feliccità Instituto de Fertilidade, Rua Conselheiro Dantas, 1154-80220-191, Curitiba, Brazil
| | - Ana Cv Krepischi
- Human Genome and Stem Cells Research Center, Biosciences Institute, University of São Paulo (IB-USP), Rua do Matão, Travessa 14, 321-05508-090, São Paulo, Brazil
| | - Oswaldo K Okamoto
- Human Genome and Stem Cells Research Center, Biosciences Institute, University of São Paulo (IB-USP), Rua do Matão, Travessa 14, 321-05508-090, São Paulo, Brazil
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Keshet G, Bar S, Sarel-Gallily R, Yanuka O, Benvenisty N, Eldar-Geva T. Differentiation of uniparental human embryonic stem cells into granulosa cells reveals a paternal contribution to gonadal development. Stem Cell Reports 2023; 18:817-828. [PMID: 37001516 PMCID: PMC10147827 DOI: 10.1016/j.stemcr.2023.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 04/03/2023] Open
Abstract
Genomic imprinting underlies the mammalian requirement for sexual reproduction. Nonetheless, the relative contribution of the two parental genomes during human development is not fully understood. Specifically, a fascinating question is whether the formation of the gonad, which holds the ability to reproduce, depends on equal contribution from both parental genomes. Here, we differentiated androgenetic and parthenogenetic human pluripotent stem cells (hPSCs) into ovarian granulosa-like cells (GLCs). We show that in contrast to biparental and androgenetic cells, parthenogenetic hPSCs present a reduced capacity to differentiate into GLCs. We further identify the paternally expressed gene IGF2 as the most upregulated imprinted gene upon differentiation. Remarkably, while IGF2 knockout androgenetic cells fail to differentiate into GLCs, the differentiation of parthenogenetic cells supplemented with IGF2 is partly rescued. Thus, our findings unravel a surprising essentiality of genes that are only expressed from the paternal genome to the development of the female reproductive system.
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Affiliation(s)
- Gal Keshet
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, Israel.
| | - Shiran Bar
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, Israel
| | - Roni Sarel-Gallily
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, Israel
| | - Ofra Yanuka
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, Israel
| | - Nissim Benvenisty
- The Azrieli Center for Stem Cells and Genetic Research, Department of Genetics, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, Israel.
| | - Talia Eldar-Geva
- Reproductive Endocrinology and Genetics Unit, Division of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, Israel; The Hebrew University School of Medicine, Jerusalem, Israel.
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5
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Unbalanced development and progressive repair in human early mosaic and chimeric embryos. Med Hypotheses 2022. [DOI: 10.1016/j.mehy.2022.110967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Rao DG, Mantravadi KC, Sharanappa VK. Euploid Day-5 Blastocysts Versus Euploid Day-6 Blastocysts — Will the Reproductive Outcomes Differ? An Observational Study. FERTILITY & REPRODUCTION 2021. [DOI: 10.1142/s2661318221500055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background and objective: Day-5 blastocyst embryos are usually chosen for assisted reproductive therapy. We compared the reproductive outcomes of the euploid blastocysts developed on Day 5 versus Day 6. Methods: This single-center, retrospective observational study analyzed patients aged 25–45 years, who underwent intracytoplasmic sperm injection from December 2014 to November 2018. Depending on the day of trophectoderm biopsy, patients were categorized into Day-5 and Day-6 groups. Percentages of euploid embryos were calculated for both groups, and elective single euploid blastocysts were transferred in a frozen embryo transfer (FET) cycles. The study endpoints were the comparisons of the reproductive outcomes including clinical pregnancy rate (CPR), implantation rate (IR), miscarriage rate (MR), and live birth rate (LBR) between Day-5 and Day-6 euploid FET groups. Results: A total of 801 embryos from 184 patients were evaluated [Day 5 ([Formula: see text]=769); Day 6 ([Formula: see text]=32); 42.45% were euploid] with the rate of euploidy in Day-5 and Day-6 groups at 42.52% and 40.62%, respectively. A total of 126 patients underwent FET with 126 elective single euploid embryos (Day 5: 117; Day 6: 9). For Day-5 versus Day-6 groups, a significantly higher IR (61.54% vs. 44.44%; [Formula: see text] = 0.0531), CPR (61.54% vs. 44.44%; [Formula: see text] = 0.0531), and LBR (61.54% vs. 33.33%; [Formula: see text] = 0.0014) were reported. Multivariate analysis on ANOVA suggested, comparable pregnancy rates at Day 5 and Day 6 ([Formula: see text] = 0.728). Conclusions: Day-5 euploid blastocysts seem to offer better reproductive outcomes than Day-6 euploid blastocysts. Further research is recommended to evaluate the reproductive outcomes of Day-6 blastocysts.
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Affiliation(s)
- Durga Gedela Rao
- Oasis Fertility, Reproductive Medicine, Hyderabad, Telangana, India
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7
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Shahbazi MN, Wang T, Tao X, Weatherbee BAT, Sun L, Zhan Y, Keller L, Smith GD, Pellicer A, Scott RT, Seli E, Zernicka-Goetz M. Developmental potential of aneuploid human embryos cultured beyond implantation. Nat Commun 2020; 11:3987. [PMID: 32778678 PMCID: PMC7418029 DOI: 10.1038/s41467-020-17764-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 07/10/2020] [Indexed: 12/11/2022] Open
Abstract
Aneuploidy, the presence of an abnormal number of chromosomes, is a major cause of early pregnancy loss in humans. Yet, the developmental consequences of specific aneuploidies remain unexplored. Here, we determine the extent of post-implantation development of human embryos bearing common aneuploidies using a recently established culture platform. We show that while trisomy 15 and trisomy 21 embryos develop similarly to euploid embryos, monosomy 21 embryos exhibit high rates of developmental arrest, and trisomy 16 embryos display a hypo-proliferation of the trophoblast, the tissue that forms the placenta. Using human trophoblast stem cells, we show that this phenotype can be mechanistically ascribed to increased levels of the cell adhesion protein E-CADHERIN, which lead to premature differentiation and cell cycle arrest. We identify three cases of mosaicism in embryos diagnosed as full aneuploid by pre-implantation genetic testing. Our results present the first detailed analysis of post-implantation development of aneuploid human embryos.
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Affiliation(s)
- Marta N Shahbazi
- Mammalian Embryo and Stem Cell Group, University of Cambridge, Department of Physiology, Development and Neuroscience, Downing Street, Cambridge, CB2 3DY, UK
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge, CB2 0QH, UK
| | - Tianren Wang
- Foundation for Embryonic Competence, 140 Allen Road, Basking Ridge, NJ, 07920, USA
| | - Xin Tao
- Foundation for Embryonic Competence, 140 Allen Road, Basking Ridge, NJ, 07920, USA
| | - Bailey A T Weatherbee
- Mammalian Embryo and Stem Cell Group, University of Cambridge, Department of Physiology, Development and Neuroscience, Downing Street, Cambridge, CB2 3DY, UK
| | - Li Sun
- Foundation for Embryonic Competence, 140 Allen Road, Basking Ridge, NJ, 07920, USA
| | - Yiping Zhan
- Foundation for Embryonic Competence, 140 Allen Road, Basking Ridge, NJ, 07920, USA
| | - Laura Keller
- Department of Obstetrics and Gynecology, University of Michigan, 1301 E Catherine St, Ann Arbor, MI, 48109, USA
| | - Gary D Smith
- Department of Obstetrics and Gynecology, University of Michigan, 1301 E Catherine St, Ann Arbor, MI, 48109, USA
| | - Antonio Pellicer
- University of Valencia, Department of Paediatrics, Obstetrics and Gynaecology, Av. Blasco Ibanez, 15, Valencia, 46010, Spain
- IVIRMA Roma, Largo Ildebrando Pizzetti, 1, Rome, 00197, Italy
| | - Richard T Scott
- Rutgers-Robert Wood Johnson Medical School, Department of Obstetrics, Gynaecology and Reproductive Science, 125 Paterson Street, New Brunswick, NJ, 08901, USA.
- IVIRMA New Jersey, 140 Allen Road, Basking Ridge, NJ, 07920, USA.
| | - Emre Seli
- IVIRMA New Jersey, 140 Allen Road, Basking Ridge, NJ, 07920, USA.
- Yale School of Medicine, Department of Obstetrics, Gynaecology, and Reproductive Sciences, New Haven, CT, 06510, USA.
| | - Magdalena Zernicka-Goetz
- Mammalian Embryo and Stem Cell Group, University of Cambridge, Department of Physiology, Development and Neuroscience, Downing Street, Cambridge, CB2 3DY, UK.
- Division of Biology and Biological Engineering, California Institute of Technology, 1200 E California Blvd, Pasadena, CA, 91125, USA.
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Popovic M, Dhaenens L, Boel A, Menten B, Heindryckx B. Chromosomal mosaicism in human blastocysts: the ultimate diagnostic dilemma. Hum Reprod Update 2020; 26:313-334. [DOI: 10.1093/humupd/dmz050] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 11/29/2019] [Indexed: 12/30/2022] Open
Abstract
Abstract
BACKGROUND
Trophectoderm (TE) biopsy and next generation sequencing (NGS) are currently the preferred techniques for preimplantation genetic testing for aneuploidies (PGT-A). Although this approach delivered important improvements over previous testing strategies, increased sensitivity has also prompted a rise in diagnoses of uncertain clinical significance. This includes reports of chromosomal mosaicism, suggesting the presence of karyotypically distinct cells within a single TE biopsy. Given that PGT-A relies on the chromosomal constitution of the biopsied cells being representative of the entire embryo, the prevalence and clinical implications of blastocyst mosaicism continue to generate considerable controversy.
OBJECTIVE AND RATIONALE
The objective of this review was to evaluate existing scientific evidence regarding the prevalence and impact of chromosomal mosaicism in human blastocysts. We discuss insights from a biological, technical and clinical perspective to examine the implications of this diagnostic dilemma for PGT-A.
SEARCH METHODS
The PubMed and Google Scholar databases were used to search peer-reviewed publications using the following terms: ‘chromosomal mosaicism’, ‘human’, ‘embryo’, ‘blastocyst’, ‘implantation’, ‘next generation sequencing’ and ‘clinical management’ in combination with other keywords related to the subject area. Relevant articles in the English language, published until October 2019 were critically discussed.
OUTCOMES
Chromosomal mosaicism predominately results from errors in mitosis following fertilization. Although it appears to be less pervasive at later developmental stages, establishing the true prevalence of mosaicism in human blastocysts remains exceedingly challenging. In a clinical context, blastocyst mosaicism can only be reported based on a single TE biopsy and has been ascribed to 2–13% of embryos tested using NGS. Conversely, data from NGS studies disaggregating whole embryos suggests that mosaicism may be present in up to ~50% of blastocysts. However, differences in testing and reporting strategies, analysis platforms and the number of cells sampled inherently overshadow current data, while added uncertainties emanate from technical artefacts. Moreover, laboratory factors and aspects of in vitro culture generate further variability. Outcome data following the transfer of blastocysts diagnosed as mosaic remain limited. Current studies suggest that the transfer of putative mosaic embryos may lead to healthy live births, but also results in significantly reduced ongoing pregnancy rates compared to the transfer of euploid blastocysts. Observations that a subset of mosaic blastocysts has the capacity to develop normally have sparked discussions regarding the ability of embryos to self-correct. However, there is currently no direct evidence to support this assumption. Nevertheless, the exclusion of mosaic blastocysts results in fewer embryos available for transfer, which may inevitably compromise treatment outcomes.
WIDER IMPLICATIONS
Chromosomal mosaicism in human blastocysts remains a perpetual diagnostic and clinical dilemma in the context of PGT-A. This review offers an important scientific resource, informing about the challenges, risks and value of diagnosing mosaicism. Elucidating these uncertainties will ultimately pave the way towards improved clinical and patient management.
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Affiliation(s)
- Mina Popovic
- Ghent-Fertility and Stem Cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | - Lien Dhaenens
- Ghent-Fertility and Stem Cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | - Annekatrien Boel
- Ghent-Fertility and Stem Cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | - Björn Menten
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium
| | - Björn Heindryckx
- Ghent-Fertility and Stem Cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
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9
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Zhang L, Wei D, Zhu Y, Gao Y, Yan J, Chen ZJ. Rates of live birth after mosaic embryo transfer compared with euploid embryo transfer. J Assist Reprod Genet 2018; 36:165-172. [PMID: 30246223 DOI: 10.1007/s10815-018-1322-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 09/14/2018] [Indexed: 12/22/2022] Open
Abstract
PURPOSE Mosaicism is a prevalent characteristic of human preimplantation embryos. This retrospective cohort study aimed to investigate pregnancy outcomes after transfer of mosaic or euploid embryos. METHODS The embryos, which had been transferred as "euploidy," were processed using array-based comparative genomic hybridization (aCGH). The original aCGH charts of the transferred embryos were reanalyzed. Mosaic and control euploid embryos were defined according to log2 ratio calls. RESULTS Overall, 102 embryos were determined to be mosaic, of which 101 were estimated to harbor no more than 50% aneuploid mosaicism. Additionally, 268 euploid embryos were matched as controls. The rates of live birth (46.6% vs. 59.1%, odds ratio (OR) 0.60, 95% confidence interval (CI) 0.38-0.95), and biochemical pregnancy (65.7% vs. 76.1%, OR 0.60, 95% CI 0.37-0.99) per transfer cycle were significantly lower after mosaic embryo transfer than after euploid embryo transfer. The rates of clinical pregnancy and pregnancy loss and the risks of obstetric outcomes did not differ significantly between the two groups. CONCLUSIONS Compared with euploid embryo transfer, mosaic embryo transfer is associated with a lower rate of live birth, which is mainly attributed to a decreased rate of conception. However, as mosaic embryo transfer yielded a live birth rate of 46.6%, patients without euploid embryos could be counseled regarding this alternative option.
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Affiliation(s)
- Lei Zhang
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jingliu Road 157, Jinan, 250021, China.,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, China.,The Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, China.,Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, China
| | - Daimin Wei
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jingliu Road 157, Jinan, 250021, China.,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, China.,The Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, China.,Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, China
| | - Yueting Zhu
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jingliu Road 157, Jinan, 250021, China.,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, China.,The Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, China.,Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, China
| | - Yuan Gao
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jingliu Road 157, Jinan, 250021, China.,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, China.,The Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, China.,Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, China
| | - Junhao Yan
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jingliu Road 157, Jinan, 250021, China. .,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, China. .,The Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, China. .,Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, China.
| | - Zi-Jiang Chen
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jingliu Road 157, Jinan, 250021, China.,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, China.,The Key Laboratory of Reproductive Endocrinology (Shandong University), Ministry of Education, Jinan, China.,Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, China.,Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
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10
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Laowtammathron C, Chingsuwanrote P, Choavaratana R, Phornwilardsiri S, Sitthirit K, Kaewjunun C, Makemaharn O, Terbto P, Waeteekul S, Lorthongpanich C, U-Pratya Y, Srisook P, Kheolamai P, Issaragrisil S. High-efficiency derivation of human embryonic stem cell lines using a culture system with minimized trophoblast cell proliferation. Stem Cell Res Ther 2018; 9:138. [PMID: 29751777 PMCID: PMC5948903 DOI: 10.1186/s13287-018-0866-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/28/2018] [Accepted: 04/11/2018] [Indexed: 01/29/2023] Open
Abstract
Background Due to their extensive self-renewal and multilineage differentiation capacity, human embryonic stem cells (hESCs) have great potential for studying developmental biology, disease modeling, and developing cell replacement therapy. The first hESC line was generated in 1998 by culturing inner cell mass (ICM) cells isolated from human blastocysts using an immunosurgery technique. Since then, many techniques including mechanical ICM isolation, laser dissection, and whole embryo culture have been used to derive hESC lines. However, the hESC derivation efficiency remains low, usually less than 50%, and it requires a large number of human embryos to derive a significant number of hESC lines. Due to a shortage of and restricted access to human embryos, a novel approach with better hESC derivation efficiency is badly needed to decrease the number of embryos used. Methods We hypothesized that the low hESC derivation efficiency might be due to extensive proliferation of trophoblast (TE) cells which could interfere with ICM proliferation. We therefore developed a methodology to minimize TE cell proliferation by culturing ICM in a feeder-free system for 3 days before transferring them onto feeder cells. Results This minimized trophoblast cell proliferation (MTP) technique could be successfully used to derive hESCs from normal, abnormal, and frozen–thawed embryos with better derivation efficiency of more than 50% (range 50–100%; median 70%). Conclusions We successfully developed a better hESC derivation methodology using the “MTP” culture system. This methodology can be effectively used to derive hESCs from both normal and abnormal embryos under feeder-free conditions with higher efficiency when compared with other methodologies. With this methodology, large-scale production of clinical-grade hESCs is feasible. Electronic supplementary material The online version of this article (10.1186/s13287-018-0866-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chuti Laowtammathron
- Siriraj Center of Excellence for Stem Cell Research (SiSCR), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Pimjai Chingsuwanrote
- Siriraj Center of Excellence for Stem Cell Research (SiSCR), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Roungsin Choavaratana
- Division of Infertility and Reproductive Biology, Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Suphadtra Phornwilardsiri
- Division of Infertility and Reproductive Biology, Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Ketsara Sitthirit
- Division of Infertility and Reproductive Biology, Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Chidchanok Kaewjunun
- Division of Infertility and Reproductive Biology, Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Orawan Makemaharn
- Division of Infertility and Reproductive Biology, Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Papussorn Terbto
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Supaporn Waeteekul
- Division of Medical Genetics, Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Chanchao Lorthongpanich
- Siriraj Center of Excellence for Stem Cell Research (SiSCR), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Yaowalak U-Pratya
- Siriraj Center of Excellence for Stem Cell Research (SiSCR), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.,Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Pimonwan Srisook
- Siriraj Center of Excellence for Stem Cell Research (SiSCR), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Pakpoom Kheolamai
- Siriraj Center of Excellence for Stem Cell Research (SiSCR), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.,Division of Cell Biology, Faculty of Medicine, Thammasat University, Pathumthani, 12120, Thailand
| | - Surapol Issaragrisil
- Siriraj Center of Excellence for Stem Cell Research (SiSCR), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand. .,Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.
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11
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Peterson SE, Garitaonandia I, Loring JF. The tumorigenic potential of pluripotent stem cells: What can we do to minimize it? Bioessays 2017; 38 Suppl 1:S86-95. [PMID: 27417126 DOI: 10.1002/bies.201670915] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 02/05/2016] [Accepted: 02/09/2016] [Indexed: 12/14/2022]
Abstract
Human pluripotent stem cells (hPSCs) have the potential to fundamentally change the way that we go about treating and understanding human disease. Despite this extraordinary potential, these cells also have an innate capability to form tumors in immunocompromised individuals when they are introduced in their pluripotent state. Although current therapeutic strategies involve transplantation of only differentiated hPSC derivatives, there is still a concern that transplanted cell populations could contain a small percentage of cells that are not fully differentiated. In addition, these cells have been frequently reported to acquire genetic alterations that, in some cases, are associated with certain types of human cancers. Here, we try to separate the panic from reality and rationally evaluate the true tumorigenic potential of these cells. We also discuss a recent study examining the effect of culture conditions on the genetic integrity of hPSCs. Finally, we present a set of sensible guidelines for minimizing the tumorigenic potential of hPSC-derived cells. © 2016 The Authors. Inside the Cell published by Wiley Periodicals, Inc.
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Affiliation(s)
- Suzanne E Peterson
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California, USA.,Center for Regenerative Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Ibon Garitaonandia
- Department of Neurogenetics, International Stem Cell Corporation, Oceanside, CA, USA
| | - Jeanne F Loring
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California, USA.,Center for Regenerative Medicine, The Scripps Research Institute, La Jolla, California, USA
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12
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Halevy T, Biancotti JC, Yanuka O, Golan-Lev T, Benvenisty N. Molecular Characterization of Down Syndrome Embryonic Stem Cells Reveals a Role for RUNX1 in Neural Differentiation. Stem Cell Reports 2016; 7:777-786. [PMID: 27618722 PMCID: PMC5063584 DOI: 10.1016/j.stemcr.2016.08.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 08/03/2016] [Accepted: 08/03/2016] [Indexed: 02/06/2023] Open
Abstract
Down syndrome (DS) is the leading genetic cause of mental retardation and is caused by a third copy of human chromosome 21. The different pathologies of DS involve many tissues with a distinct array of neural phenotypes. Here we characterize embryonic stem cell lines with DS (DS-ESCs), and focus on the neural aspects of the disease. Our results show that neural progenitor cells (NPCs) differentiated from five independent DS-ESC lines display increased apoptosis and downregulation of forehead developmental genes. Analysis of differentially expressed genes suggested RUNX1 as a key transcription regulator in DS-NPCs. Using genome editing we were able to disrupt all three copies of RUNX1 in DS-ESCs, leading to downregulation of several RUNX1 target developmental genes accompanied by reduced apoptosis and neuron migration. Our work sheds light on the role of RUNX1 and the importance of dosage balance in the development of neural phenotypes in DS.
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Affiliation(s)
- Tomer Halevy
- Department of Genetics, The Azrieli Center for Stem Cells and Genetic Research, Institute of Life Sciences, The Hebrew University, Givat-Ram, Jerusalem 91904, Israel
| | - Juan-Carlos Biancotti
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA 90048, USA
| | - Ofra Yanuka
- Department of Genetics, The Azrieli Center for Stem Cells and Genetic Research, Institute of Life Sciences, The Hebrew University, Givat-Ram, Jerusalem 91904, Israel
| | - Tamar Golan-Lev
- Department of Genetics, The Azrieli Center for Stem Cells and Genetic Research, Institute of Life Sciences, The Hebrew University, Givat-Ram, Jerusalem 91904, Israel
| | - Nissim Benvenisty
- Department of Genetics, The Azrieli Center for Stem Cells and Genetic Research, Institute of Life Sciences, The Hebrew University, Givat-Ram, Jerusalem 91904, Israel.
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13
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Gleicher N, Vidali A, Braverman J, Kushnir VA, Barad DH, Hudson C, Wu YG, Wang Q, Zhang L, Albertini DF. Accuracy of preimplantation genetic screening (PGS) is compromised by degree of mosaicism of human embryos. Reprod Biol Endocrinol 2016; 14:54. [PMID: 27595768 PMCID: PMC5011996 DOI: 10.1186/s12958-016-0193-6] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 08/30/2016] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND To preclude transfer of aneuploid embryos, current preimplantation genetic screening (PGS) usually involves one trophectoderm biopsy at blastocyst stage, assumed to represent embryo ploidy. Whether one such biopsy can correctly assess embryo ploidy has recently, however, been questioned. METHODS This descriptive study investigated accuracy of PGS in two ways. Part I: Two infertile couples donated 11 embryos, previously diagnosed as aneuploid and, therefore, destined to be discarded. They were dissected into 37 anonymized specimens, and sent to another national laboratory for repeat analyses to assess (i) inter-laboratory congruity and (ii) intra-embryo congruity of multiple embryo biopsies in a single laboratory. Part II: Reports on human IVF cycle outcomes after transfer of allegedly aneuploid embryos into 8 infertile patients. RESULTS Only 2/11 (18.2 %) embryos were identically assessed at two PGS laboratories; 4/11 (36.4 %), on repeat analysis were chromosomally normal, 2 mosaic normal/abnormal, and 5/11 (45.5 %) completely differed in reported aneuploidies. In intra-embryo analyses, 5/10 (50 %) differed between biopsy sites. Eight transfers of previously reported aneuploid embryos resulted in 5 chromosomally normal pregnancies, 4 delivered and 1 ongoing. Three patients did not conceive, though 1 among them experienced a chemical pregnancy. CONCLUSIONS Though populations of both study parts are too small to draw statistically adequately powered conclusions on specific degrees of inaccuracy of PGS, here presented results do raise concerns especially about false-positive diagnoses. While inter-laboratory variations may at least partially be explained by different diagnostic platforms utilized, they cannot explain observed intra-embryo variations, suggesting more frequent trophectoderm mosiaicsm than previously reported. Together with recentl published mouse studies of lineages-specific degrees of survival of aneuploid cells in early stage embryos, these results call into question the biological basis of PGS, based on the assumption that a single trophectoderm biopsy can reliably determine embryo ploidy.
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Affiliation(s)
- Norbert Gleicher
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
- The Foundation for Reproductive Medicine, New York, NY USA
- The Brivanlou Laboratory for Stem Cell Biology and Molecular Embryology, Rockefeller University, New York, NY USA
| | - Andrea Vidali
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
- Fertility Specialist in New York, New York, NY USA
| | | | - Vitaly A. Kushnir
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
- Department of Obstetrics and Gynecology, Wake Forest University, Winston Salem, NC USA
| | - David H. Barad
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
- The Foundation for Reproductive Medicine, New York, NY USA
- Department of Obstetrics and Gynecology, Albert Einstein College of Medicine, Bronx, NY USA
| | - Cynthia Hudson
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
| | - Yang-Guan Wu
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
| | - Qi Wang
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
| | - Lin Zhang
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
| | - David F. Albertini
- The Center for Human Reproduction, 21 East 69th Street, New York, NY 10021 USA
- Department of Molecular and Integrative Physiology, University of Kansas School of Medicine, Wichita, KS USA
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14
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Huang B, Jiang C, Chen A, Cui Y, Xie J, Shen J, Chen J, Cai L, Liao T, Ning S, Jiang SW, Fan G, Qin L, Liu J. Establishment of human-embryonic-stem-cell line from mosaic trisomy 9 embryo. Taiwan J Obstet Gynecol 2016; 54:505-11. [PMID: 26522100 DOI: 10.1016/j.tjog.2015.08.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2014] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE Human-embryonic-stem-cell (hESC) lines derived from chromosomally or genetically abnormal embryos obtained following preimplantation genetic diagnosis are valuable in investigating genetic disorders. MATERIALS AND METHODS In this study, a new hESC line, Center of Clinical Reproductive Medicine 8 (CCRM8) was established by isolation, culture, and passaging of the inner cell mass of mosaic trisomy 9 embryos. RESULTS A karyotype analysis showed that the hESC line possessed a euploid (46 chromosomes). The undifferentiated hESCs exhibited long-term proliferation capacity and expressed typical markers of OCT4, TRA-1-60, and TRA-1-81. In vitro embryoid-body (EB) formation, differentiation, and in vivo teratoma production confirmed the pluripotency of the hESC line. The data represented here are the first detailed report on the characterization and differentiation of one Chinese hESC line generated from mosaic trisomy 9 embryos. CONCLUSION Our study showed that chromosomally aberrant embryos could generate a normal hESC line, which would be useful in investigating gene function and embryo development.
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Affiliation(s)
- Boxian Huang
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China; School of Life Science and Technology, China Pharmaceutical University, Nanjing 210038, China
| | - Chunyan Jiang
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Aiqin Chen
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Yugui Cui
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Jiazi Xie
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Jiandong Shen
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Juan Chen
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Lingbo Cai
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Tingting Liao
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Song Ning
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Shi-Wen Jiang
- Department of Biomedical Science, Mercer University School of Medicine, Savannah, GA 31404, USA
| | - Guoping Fan
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Lianju Qin
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China.
| | - Jiayin Liu
- State Key Laboratory of Reproductive Medicine, Center of Clinical Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China; School of Life Science and Technology, China Pharmaceutical University, Nanjing 210038, China.
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15
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Chen X, Niu W, Wang F, Yu W, Dai S, Kong H, Shu Y, Sun Y. Derivation of normal diploid human embryonic stem cells from tripronuclear zygotes with analysis of their copy number variation and loss of heterozygosity. Mol Reprod Dev 2016; 82:344-55. [PMID: 25988573 DOI: 10.1002/mrd.22485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 03/03/2015] [Indexed: 11/09/2022]
Abstract
This study sought to establish archives of genetic copy number variation (CNV) in human embryonic stem cell (hESC) lines that are associated with known diseases. We collected patients' fresh, discarded zygotes from in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) protocols. A total of 208 fresh, tripronuclear, discarded zygotes were also collected in this study from patients on the third day of their treatment cycle, prior to transfer. The blastula-formation rates were 13.51% (26/192) and 26.7% (4/15) while the high-quality blastocyst formation rates were 5.8% (11/192) and 20% (3/15) in the IVF and ICSI groups, respectively. The inner cell mass (ICM) from each embryo was mechanically separated, and then grown on feeder layers consisting of mouse embryonic fibroblasts and human foreskin fibroblasts (a 1:1 mixture). The hESC karyotype was determined by traditional G-banding; analysis of the results for the Zh19P25 and Zh20P24 cell lines showed that both were 46 XY. CNV and loss-of-heterozygosity analysis of hESC gDNA was performed to assess the genetic characteristics associated with molecular diseases using the high-resolution Infinium High-Density HumanCytoSNP-12 DNA chip. Seven CNVs in Zh19P25 and Zh20P24 were deletions, and a region that corresponds to Potocki-Shaffer disease, 11p11.2-11p11.12 in Zh20P24, showed a 2.98-Mb loss. These data together suggest that single-nucleotide polymorphism (SNP) microarray analysis for molecular cytogenetic features can help to distinguish hESC lines with a normal karyotype from tripronuclear zygotes with known, disease-related characteristics.
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Affiliation(s)
- Xuemei Chen
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Human Anatomy, College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Wenbin Niu
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Fang Wang
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wenzhu Yu
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Shanjun Dai
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Huijuan Kong
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yimin Shu
- Department of Obstetrics and Gynecology, Stanford University Medical Center, Palo Alto, California
| | - Yingpu Sun
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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16
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Bazrgar M, Gourabi H, Eftekhari-Yazdi P, Vazirinasab H, Fakhri M, Hassani F, Chehrazi M, Valojerdi MR. The Effect of Prolonged Culture of Chromosomally Abnormal Human Embryos on The Rate of Diploid Cells. INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2016; 9:563-73. [PMID: 26985346 PMCID: PMC4793179 DOI: 10.22074/ijfs.2015.4617] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 12/12/2014] [Indexed: 11/18/2022]
Abstract
Background A decrease in aneuploidy rate following a prolonged co-culture of human
blastocysts has been reported. As co-culture is not routinely used in assisted reproductive
technology, the present study aimed to evaluate the effect of the prolonged single culture
on the rate of diploid cells in human embryos with aneuploidies. Materials and Methods In this cohort study, we used fluorescence in situ hybridi-
zation (FISH) to reanalyze surplus blastocysts undergoing preimplantation genetic
diagnosis (PGD) on day 3 postfertilization. They were randomly studied on days 6 or
7 following fertilization. Results Of the 30 analyzed blastocysts, mosaicism was observed in 26(86.6%), while
2(6.7%) were diploid, and 2(6.7%) were triploid. Of those with mosaicism, 23(88.5%)
were determined to be diploid-aneuploid and 3(11.5%) were aneuploid mosaic. The total
frequency of embryos with more than 50% diploid cells was 33.3% that was lower on
day 7 in comparison with the related value on day 6 (P<0.05); however, there were no
differences when the embryos were classified according to maternal age, blastocyst developmental stage, total cell number on day 3, and embryo quality. Conclusion Although mosaicism is frequently observed in blastocysts, the prolonged
single culture of blastocysts does not seem to increase the rate of normal cells.
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Affiliation(s)
- Masood Bazrgar
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran; Department of Developmental Biology, University of Science and Culture, Tehran, Iran
| | - Hamid Gourabi
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Poopak Eftekhari-Yazdi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Hamed Vazirinasab
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Mostafa Fakhri
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Fatemeh Hassani
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Mohamad Chehrazi
- Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Mojtaba Rezazadeh Valojerdi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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17
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TeratoScore: Assessing the Differentiation Potential of Human Pluripotent Stem Cells by Quantitative Expression Analysis of Teratomas. Stem Cell Reports 2016; 4:967-74. [PMID: 26070610 PMCID: PMC4471824 DOI: 10.1016/j.stemcr.2015.05.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/06/2015] [Accepted: 05/06/2015] [Indexed: 12/22/2022] Open
Abstract
Teratoma formation is the gold standard assay for testing the capacity of human pluripotent stem cells to differentiate into all embryonic germ layers. Although widely used, little effort has been made to transform this qualitative assay into a quantitative one. Using gene expression data from a wide variety of cells, we created a scorecard representing tissues from all germ layers and extraembryonic tissues. TeratoScore, an online, open-source platform based on this scorecard, distinguishes pluripotent stem cell-derived teratomas from malignant tumors, translating cell potency into a quantitative measure (http://benvenisty.huji.ac.il/teratoscore.php). The teratomas used for the algorithm also allowed us to examine gene expression differences between tumors with a diploid karyotype and those initiated by aneuploid cells. Chromosomally aberrant teratomas show a significantly different gene expression signature from that of teratomas originating from diploid cells, particularly in central nervous system-specific genes, congruent with human chromosomal syndromes. A gene scorecard representing human tissues from all germ layers was created A quantitative pluripotency test named TeratoScore was based on this scorecard TeratoScore distinguishes pluripotent stem cell-derived teratomas from other tumors Teratomas derived from aneuploid cells show aberrant tissue expression distribution
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18
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Rungsiwiwut R, Numchaisrika P, Ahnonkitpanit V, Virutamasen P, Pruksananonda K. Triploid human embryonic stem cells derived from tripronuclear zygotes displayed pluripotency and trophoblast differentiation ability similar to the diploid human embryonic stem cells. J Reprod Dev 2016; 62:167-76. [PMID: 26821869 PMCID: PMC4848574 DOI: 10.1262/jrd.2015-113] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Because the diploid human embryonic stem cells (hESCs) can be successfully derived from tripronuclear
zygotes thus, they can serve as an alternative source of derivation of normal karyotype hESC lines. The aim of
the present study was to compare the pluripotency and trophoblast differentiation ability of hESCs derived
from tripronuclear zygotes and diploid hESCs. In the present study, a total of 20 tripronuclear zygotes were
cultured; 8 zygotes developed to the blastocyst stage and 1 hESC line was generated. Unlike the previous
studies, chromosomal correction of tripronuclear zygotes during derivation of hESCs did not occur. The
established line carries 3 sets of chromosomes and showed a numerical aberration. Although the cell line
displayed an abnormal chromosome number, it was found the cell line has been shown to be pluripotent with the
ability to differentiate into 3 embryonic germ layers both in vitro and in
vivo. The expression of X inactive specific transcript (XIST) in mid-passage (passage 42) of
undifferentiated triploid hESCs was detected, indicating X chromosome inactivation of the cell line. Moreover,
when this cell line was induced to differentiate toward the trophoblast lineage, morphological and functional
trophoblast cells were observed, similar to the diploid hESC line.
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Affiliation(s)
- Ruttachuk Rungsiwiwut
- Reproductive Medicine Unit, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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19
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Pronuclear removal of tripronuclear zygotes can establish heteroparental normal karyotypic human embryonic stem cells. J Assist Reprod Genet 2016; 33:255-63. [PMID: 26727933 DOI: 10.1007/s10815-015-0634-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022] Open
Abstract
PURPOSE This study aimed to derive heteroparental normal karyotypic human embryonic stem cells (hESCs) from microsurgically corrected tripronuclear (3PN) zygotes. METHODS After sequential culture for 5-6 days, embryos developed from microsurgically corrected 3PN zygotes were analyzed by fluorescence in situ hybridization (FISH) using probes for chromosomes 17, X and Y. Intact 3PN zygotes from clinical in vitro fertilization (IVF) cycles were cultured as the control group. The inner cell mass (ICM) of blastocysts that developed from microsurgically corrected 3PN zygotes was used to derive hESC lines, and the stem cell characteristics of these lines were evaluated. G-banding analysis was adopted to identify the karyotype of the hESC line, and the heteroparental inheritance of the hESC line was analyzed by DNA fingerprinting analysis. RESULTS The blastocyst formation rate (13.5 %) of the microsurgically corrected 3PN zygotes was significantly higher (P < 0.05) than that of intact 3PN zygotes (8.7 %). The diploid rate of the blastocysts (55.0 %) was significantly higher (P < 0.05) than that of the arrested cleavage-stage embryos (18.4 %) in microsurgically corrected 3PN zygotes. The triploid rate of the microsurgically corrected 3PN zygotes (5.7 %) was significantly lower (P < 0.01) than that of intact 3PN zygotes (19.4 %). Furthermore, we established one heteroparental normal karyotypic hESC line from the microsurgically corrected tripronuclear zygotes. CONCLUSIONS Pronuclear removal can effectively remove the surplus chromosome set of 3PN zygotes. A combination of pronuclear removal and blastocyst culture enables the selection of diploidized blastocysts from which heteroparental normal karyotypic hESC lines can be derived.
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Fonseca SAS, Costas RM, Morato-Marques M, Costa S, Alegretti JR, Rosenberg C, da Motta ELA, Serafini PC, Pereira LV. A Euploid Line of Human Embryonic Stem Cells Derived from a 43,XX,dup(9q),+12,-14,-15,-18,-21 Embryo. PLoS One 2015; 10:e0140999. [PMID: 26540511 PMCID: PMC4634922 DOI: 10.1371/journal.pone.0140999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 10/02/2015] [Indexed: 11/18/2022] Open
Abstract
Aneuploid embryos diagnosed by FISH-based preimplantation genetic screening (PGS) have been shown to yield euploid lines of human embryonic stem cells (hESCs) with a relatively high frequency. Given that the diagnostic procedure is usually based on the analysis of 1–2 blastomeres of 5 to 10-cell cleavage-stage embryos, mosaicism has been a likely explanation for the phenomena. However, FISH-based PGS can have a significant rate of misdiagnosis, and therefore some of those lines may have been derived from euploid embryos misdiagnosed as aneuploid. More recently, coupling of trophectoderm (TE) biopsy at the blastocyst stage and array-CGH lead to a more informative form of PGS. Here we describe the establishment of a new line of hESCs from an embryo with a 43,XX,dup(9q),+12,-14,-15,-18,-21 chromosomal content based on array-CGH of TE biopsy. We show that, despite the complex chromosomal abnormality, the corresponding hESC line BR-6 is euploid (46,XX). Single nucleotide polymorphism analysis showed that the embryo´s missing chromosomes were not duplicated in BR-6, suggesting the existence of extensive mosaicism in the TE lineage.
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Affiliation(s)
- Simone Aparecida Siqueira Fonseca
- National Laboratory of Embryonic Stem Cell (LaNCE), University of São Paulo, São Paulo, Brazil
- Department of Genetics and Evolutionary Biology, University of São Paulo, São Paulo, Brazil
| | - Roberta Montero Costas
- National Laboratory of Embryonic Stem Cell (LaNCE), University of São Paulo, São Paulo, Brazil
| | - Mariana Morato-Marques
- National Laboratory of Embryonic Stem Cell (LaNCE), University of São Paulo, São Paulo, Brazil
- Department of Genetics and Evolutionary Biology, University of São Paulo, São Paulo, Brazil
| | - Silvia Costa
- Department of Genetics and Evolutionary Biology, University of São Paulo, São Paulo, Brazil
| | | | - Carla Rosenberg
- Department of Genetics and Evolutionary Biology, University of São Paulo, São Paulo, Brazil
| | | | | | - Lygia V. Pereira
- National Laboratory of Embryonic Stem Cell (LaNCE), University of São Paulo, São Paulo, Brazil
- Department of Genetics and Evolutionary Biology, University of São Paulo, São Paulo, Brazil
- * E-mail:
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21
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Sareen D, Saghizadeh M, Ornelas L, Winkler MA, Narwani K, Sahabian A, Funari VA, Tang J, Spurka L, Punj V, Maguen E, Rabinowitz YS, Svendsen CN, Ljubimov AV. Differentiation of human limbal-derived induced pluripotent stem cells into limbal-like epithelium. Stem Cells Transl Med 2014; 3:1002-12. [PMID: 25069777 DOI: 10.5966/sctm.2014-0076] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Limbal epithelial stem cell (LESC) deficiency (LSCD) leads to corneal abnormalities resulting in compromised vision and blindness. LSCD can be potentially treated by transplantation of appropriate cells, which should be easily expandable and bankable. Induced pluripotent stem cells (iPSCs) are a promising source of transplantable LESCs. The purpose of this study was to generate human iPSCs and direct them to limbal differentiation by maintaining them on natural substrata mimicking the native LESC niche, including feederless denuded human amniotic membrane (HAM) and de-epithelialized corneas. These iPSCs were generated with nonintegrating vectors from human primary limbal epithelial cells. This choice of parent cells was supposed to enhance limbal cell differentiation from iPSCs by partial retention of parental epigenetic signatures in iPSCs. When the gene methylation patterns were compared in iPSCs to parental LESCs using Illumina global methylation arrays, limbal-derived iPSCs had fewer unique methylation changes than fibroblast-derived iPSCs, suggesting retention of epigenetic memory during reprogramming. Limbal iPSCs cultured for 2 weeks on HAM developed markedly higher expression of putative LESC markers ABCG2, ΔNp63α, keratins 14, 15, and 17, N-cadherin, and TrkA than did fibroblast iPSCs. On HAM culture, the methylation profiles of select limbal iPSC genes (including NTRK1, coding for TrkA protein) became closer to the parental cells, but fibroblast iPSCs remained closer to parental fibroblasts. On denuded air-lifted corneas, limbal iPSCs even upregulated differentiated corneal keratins 3 and 12. These data emphasize the importance of the natural niche and limbal tissue of origin in generating iPSCs as a LESC source with translational potential for LSCD treatment.
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Affiliation(s)
- Dhruv Sareen
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Mehrnoosh Saghizadeh
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Loren Ornelas
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Michael A Winkler
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Kavita Narwani
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Anais Sahabian
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Vincent A Funari
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Jie Tang
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Lindsay Spurka
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Vasu Punj
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Ezra Maguen
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Yaron S Rabinowitz
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Clive N Svendsen
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Alexander V Ljubimov
- Regenerative Medicine Institute, Eye Program, and Departments of Biomedical Sciences, Neurosurgery, Genomics Core, and Surgery, Cedars-Sinai Medical Center, Los Angeles, California, USA; Norris Comprehensive Cancer Center Bioinformatics Core and Division of Hematology, University of Southern California, Los Angeles, California, USA; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
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22
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Ludwig G, Nejman D, Hecht M, Orlanski S, Abu-Remaileh M, Yanuka O, Sandler O, Marx A, Roberts D, Benvenisty N, Bergman Y, Mendelsohn M, Cedar H. Aberrant DNA methylation in ES cells. PLoS One 2014; 9:e96090. [PMID: 24852222 PMCID: PMC4031077 DOI: 10.1371/journal.pone.0096090] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 04/03/2014] [Indexed: 11/18/2022] Open
Abstract
Both mouse and human embryonic stem cells can be differentiated in vitro to produce a variety of somatic cell types. Using a new developmental tracing approach, we show that these cells are subject to massive aberrant CpG island de novo methylation that is exacerbated by differentiation in vitro. Bioinformatics analysis indicates that there are two distinct forms of abnormal de novo methylation, global as opposed to targeted, and in each case the resulting pattern is determined by molecular rules correlated with local pre-existing histone modification profiles. Since much of the abnormal methylation generated in vitro appears to be stably maintained, this modification may inhibit normal differentiation and could predispose to cancer if cells are used for replacement therapy. Excess CpG island methylation is also observed in normal placenta, suggesting that this process may be governed by an inherent program.
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Affiliation(s)
- Guy Ludwig
- Department of Developmental Biology and Cancer Research, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Deborah Nejman
- Department of Developmental Biology and Cancer Research, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Merav Hecht
- Department of Developmental Biology and Cancer Research, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Shari Orlanski
- Department of Developmental Biology and Cancer Research, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Monther Abu-Remaileh
- Department of Developmental Biology and Cancer Research, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Ofra Yanuka
- Department of Genetics, Silberman Institute of Life Sciences, The Hebrew University, Jerusalem, Israel
| | - Oded Sandler
- Department of Biochemistry and Molecular Biology, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Amichai Marx
- Department of Biochemistry and Molecular Biology, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Douglas Roberts
- Agilent Technologies, Inc., Agilent Laboratories, Santa Clara, California, United States of America
| | - Nissim Benvenisty
- Department of Genetics, Silberman Institute of Life Sciences, The Hebrew University, Jerusalem, Israel
| | - Yehudit Bergman
- Department of Developmental Biology and Cancer Research, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
| | - Monica Mendelsohn
- Department of Biochemistry and Molecular Biophysics, Columbia College of Physicians and Surgeons, New York, New York, United States of America
| | - Howard Cedar
- Department of Developmental Biology and Cancer Research, The Hebrew University–Hadassah Medical School, Jerusalem, Israel
- * E-mail:
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23
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Zaninovic N, Zhan Q, Rosenwaks Z. Derivation of human embryonic stem cells (hESC). Methods Mol Biol 2014; 1154:121-44. [PMID: 24782008 DOI: 10.1007/978-1-4939-0659-8_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Stem cells are characterized by their absolute or relative lack of specialization their ability for self-renewal, as well as their ability to generate differentiated progeny through cellular lineages with one or more branches. The increased availability of embryonic tissue and greatly improved derivation methods have led to a large increase in the number of hESC lines.
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Affiliation(s)
- Nikica Zaninovic
- Center for Reproductive Medicine, Weill Cornell Medical College, 1305 York Avenue, New York, NY, 10021, USA,
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24
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Bradley CK, Peura T, Dumevska B, Jovasevic A, Chami O, Schmidt U, Jansen RPS, Stojanov T. Cell lines from morphologically abnormal discarded IVF embryos are typically euploid and unaccompanied by intrachromosomal aberrations. Reprod Biomed Online 2014; 28:780-8. [PMID: 24745836 DOI: 10.1016/j.rbmo.2014.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 11/08/2013] [Accepted: 02/04/2014] [Indexed: 11/25/2022]
Abstract
Routine IVF practices result in the discarding of a significant proportion of embryos due to their unsuitability for transfer or cryopreservation. The present study plated clinically unusable human blastocysts to derive cellular outgrowths for aneuploidy studies and genome-wide analysis of DNA copy number variations, and to evaluate their potential as a source for pluripotent stem cells. Just 79 cellular outgrowths were obtained from 1026 abnormal blastocysts (7.7%), reflecting their low developmental potential. Of these, 13 (16.5%) were karyotypically abnormal and included trisomies frequently detected in miscarriages, each of which was uniform (nonmosaic) and the result of meiotic nondisjunction. Evaluation of submicroscopic DNA gains and losses in 10 diploid cellular outgrowths did not identify increased rates of copy number variations. Five of these outgrowths were shown to express pluripotency markers and could be developed into cell lineages representative of the three germ layers. These data suggest that embryos with chromosomal abnormalities resist cell-line derivation, and mosaic aneuploidy produced from mitotic nondisjunction, common in preimplantation embryos, is likely to be diminished or lost under conditions of diploid cell competition. Furthermore, this work demonstrated that abnormal embryos discarded in IVF programmes can provide a valuable source for pluripotent stem cell lines. During IVF, a large proportion of embryos are clinically unsuitable due to abnormal development and these embryos only have a small chance of achieving a pregnancy. Here we used these abnormal embryos to create cell lines for genetic testing and to determine their potential as stem cells. Of the 1026 abnormal embryos used, 79 (7.7%) created cell lines, reflecting their low developmental potential. Of those, only 16.5% had chromosomal anomalies, a much lower number than expected. This included chromosome abnormalities frequently observed in miscarriages, all of which were found in each cell tested (nonmosaic) and originated from the egg or the sperm as opposed to cell division. In-depth testing of 10 normal cell lines for small DNA gains and losses did not reveal an increased frequency of mutations. Furthermore, five of the cell lines were examined for stem cell properties and found to exhibit the hallmark features of stem cells including their ability to make mature cells from different parts of the body. Our data suggest that embryos with abnormal chromosomes resist making cell lines and that abnormalities that arise during cell division are likely to be lost due to competition with normal cells. We also demonstrated that abnormal embryos usually discarded in IVF programmes can provide a valuable source for stem cell lines.
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25
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Peterson SE, Loring JF. Genomic instability in pluripotent stem cells: implications for clinical applications. J Biol Chem 2013; 289:4578-84. [PMID: 24362040 DOI: 10.1074/jbc.r113.516419] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Human pluripotent stem cells (hPSCs) are known to acquire genomic changes as they proliferate and differentiate. Despite concerns that these changes will compromise the safety of hPSC-derived cell therapy, there is currently scant evidence linking the known hPSC genomic abnormalities with malignancy. For the successful use of hPSCs for clinical applications, we will need to learn to distinguish between innocuous genomic aberrations and those that may cause tumors. To minimize any effects of acquired mutations on cell therapy, we strongly recommend that cells destined for transplant be monitored throughout their preparation using a high-resolution method such as SNP genotyping.
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Affiliation(s)
- Suzanne E Peterson
- From the Department of Chemical Physiology and Center for Regenerative Medicine, The Scripps Research Institute, La Jolla, California 92037
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26
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Gene expression analysis of induced pluripotent stem cells from aneuploid chromosomal syndromes. BMC Genomics 2013; 14 Suppl 5:S8. [PMID: 24564826 PMCID: PMC3852284 DOI: 10.1186/1471-2164-14-s5-s8] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Human aneuploidy is the leading cause of early pregnancy loss, mental retardation, and multiple congenital anomalies. Due to the high mortality associated with aneuploidy, the pathophysiological mechanisms of aneuploidy syndrome remain largely unknown. Previous studies focused mostly on whether dosage compensation occurs, and the next generation transcriptomics sequencing technology RNA-seq is expected to eventually uncover the mechanisms of gene expression regulation and the related pathological phenotypes in human aneuploidy. Results Using next generation transcriptomics sequencing technology RNA-seq, we profiled the transcriptomes of four human aneuploid induced pluripotent stem cell (iPSC) lines generated from monosomy × (Turner syndrome), trisomy 8 (Warkany syndrome 2), trisomy 13 (Patau syndrome), and partial trisomy 11:22 (Emanuel syndrome) as well as two umbilical cord matrix iPSC lines as euploid controls to examine how phenotypic abnormalities develop with aberrant karyotype. A total of 466 M (50-bp) reads were obtained from the six iPSC lines, and over 13,000 mRNAs were identified by gene annotation. Global analysis of gene expression profiles and functional analysis of differentially expressed (DE) genes were implemented. Over 5000 DE genes are determined between aneuploidy and euploid iPSCs respectively while 9 KEGG pathways are overlapped enriched in four aneuploidy samples. Conclusions Our results demonstrate that the extra or missing chromosome has extensive effects on the whole transcriptome. Functional analysis of differentially expressed genes reveals that the genes most affected in aneuploid individuals are related to central nervous system development and tumorigenesis.
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Abstract
Trisomy 21 in human causes Down syndrome, a common chromosome disorder with devastating phenotypes ranging from early death in utero to intellectual disability together with an array of physical anomalies and late-onset diseases. In a recent study published in Nature, Jeanne Lawrence and her colleagues restored normal gene expression in trisomy 21 cells by silencing the extra chromosome using XIST, the non-coding RNA that normally silences one X chromosome in females; this improved growth and differentiation of neural cells, which offers hope that some deleterious effects of the trisomy could be reversed to improve this incurable disease.
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Affiliation(s)
- Christine M Disteche
- Departments of Pathology and Medicine, University of Washington, Seattle WA98115, USA
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28
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Jiang J, Jing Y, Cost GJ, Chiang JC, Kolpa HJ, Cotton AM, Carone DM, Carone BR, Shivak DA, Guschin DY, Pearl JR, Rebar EJ, Byron M, Gregory PD, Brown CJ, Urnov FD, Hall LL, Lawrence JB. Translating dosage compensation to trisomy 21. Nature 2013; 500:296-300. [PMID: 23863942 PMCID: PMC3848249 DOI: 10.1038/nature12394] [Citation(s) in RCA: 233] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 06/18/2013] [Indexed: 12/21/2022]
Abstract
Down syndrome (DS) is a common disorder with enormous medical and social costs, caused by trisomy for chromosome 21 (Chr21). We tested the concept that gene imbalance across an extra chromosome can be de facto corrected by manipulating a single gene, XIST. Using genome editing with zinc finger nucleases, we targeted a large, inducible XIST transgene into the Chr21 DYRK1A locus, in DS pluripotent stem cells. XIST RNA coats Chr21 and triggers stable heterochromatin modifications, chromosome-wide transcriptional silencing and DNA methylation to form a “Chr21 Barr Body.” This provides a model to study human chromosome inactivation and creates a system to investigate genomic expression changes and cellular pathologies of trisomy 21, free from genetic and epigenetic noise. Remarkably, deficits in proliferation and neural rosette formation are rapidly reversed upon silencing one Chr21. Successful trisomy silencing in vitro also surmounts the major first step towards potential development of “chromosome therapy”.
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Affiliation(s)
- Jun Jiang
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, Massachusetts 01655, USA
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29
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Bazrgar M, Gourabi H, Valojerdi MR, Yazdi PE, Baharvand H. Self-correction of chromosomal abnormalities in human preimplantation embryos and embryonic stem cells. Stem Cells Dev 2013; 22:2449-56. [PMID: 23557100 DOI: 10.1089/scd.2013.0053] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aneuploidy is commonly seen in human preimplantation embryos, most particularly at the cleavage stage because of genome activation by third cell division. Aneuploid embryos have been used for the derivation of normal embryonic stem cell (ESC) lines and developmental modeling. This review addresses aneuploidies in human preimplantation embryos and human ESCs and the potential of self-correction of these aberrations. Diploid-aneuploid mosaicism is the most frequent abnormality observed; hence, embryos selected by preimplantation genetic diagnosis at the cleavage or blastocyst stage could be partly abnormal. Differentiation is known as the barrier for eliminating mosaic embryos by death and/or decreased division of abnormal cells. However, some mosaicisms, such as copy number variations could be compatible with live birth. Several reasons have been proposed for self-correction of aneuploidies during later stages of development, including primary misdiagnosis, allocation of the aneuploidy in the trophectoderm, cell growth advantage of diploid cells in mosaic embryos, lagging of aneuploid cell division, extrusion or duplication of an aneuploid chromosome, and the abundance of DNA repair gene products. Although more studies are needed to understand the mechanisms of self-correction as a rare phenomenon, most likely, it is related to overcoming mosaicism.
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Affiliation(s)
- Masood Bazrgar
- Department of Genetics, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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30
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Munné S. Preimplantation genetic diagnosis for aneuploidy and translocations using array comparative genomic hybridization. Curr Genomics 2013; 13:463-70. [PMID: 23448851 PMCID: PMC3426780 DOI: 10.2174/138920212802510457] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 02/22/2012] [Accepted: 06/12/2012] [Indexed: 11/22/2022] Open
Abstract
At least 50% of human embryos are abnormal, and that increases to 80% in women 40 years or older. These abnormalities result in low implantation rates in embryos transferred during in vitro fertilization procedures, from 30% in women <35 years to 6% in women 40 years or older. Thus selecting normal embryos for transfer should improve pregnancy results. The genetic analysis of embryos is called Preimplantation Genetic Diagnosis (PGD) and for chromosome analysis it was first performed using FISH with up to 12 probes analyzed simultaneously on single cells. However, suboptimal utilization of the technique and the complexity of fixing single cells produced conflicting results. PGD has been invigorated by the introduction of microarray testing which allows for the analysis of all 24 chromosome types in one test, without the need of cell fixation, and with staggering redundancy, making the test much more robust and reliable. Recent data published and presented at scientific meetings has been suggestive of increased implantation rates and pregnancy rates following microarray testing, improvements in outcome that have been predicted for quite some time. By using markers that cover most of the genome, not only aneuploidy can be detected in single cells but also translocations. Our validation results indicate that array CGH has a 6Mb resolution in single cells, and thus the majority of translocations can be analyzed since this is also the limit of karyotyping. Even for translocations with smaller exchanged fragments, provided that three out of the four fragments are above 6Mb, the translocation can be detected.
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Affiliation(s)
- Santiago Munné
- Reprogenetics, 3 Regent Street, Suite 301, Livingston, NJ 07078, USA
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31
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Mandal A, Mathew S, Saha D, Viswanathan C. Establishment, characterization, and differentiation of a karyotypically normal human embryonic stem cell line from a trisomy-affected embryo. In Vitro Cell Dev Biol Anim 2012; 49:15-26. [PMID: 23242925 DOI: 10.1007/s11626-012-9567-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 10/22/2012] [Indexed: 01/25/2023]
Abstract
Derivation of human embryonic stem cell (hESC) lines from chromosomally or genetically abnormal embryos obtained following preimplantation genetic diagnosis (PGD) is of immense interest to study various kinds of genetic disorders. In this study, we have established a new hESC line Relicell(®)hES4, isolated from an aneuploid embryo. Derivation of this cell line was achieved by isolation of the inner cell mass (ICM) by mechanical method. Karyotype analysis showed that the hESC line is euploid having 46 chromosomes, contrary to our expectations. The undifferentiated cells exhibited long-term proliferation capacity and expressed markers typical for hESC, such as OCT4, NANOG, and SSEA4. A comparative microarray study was carried out to analyze the transcription profile of Relicell(®)hES4 along with three other normal hESC line generated earlier in our lab. Relicell(®)hES4 manifested pluripotent differentiation potential both in vivo and in vitro. The cells were also induced to form neurons, cardiomyocytes, and pancreatic β islets. The generation of a normal hESC line from an abnormal embryo points to the fact that even such embryos can be considered for deriving new hESC lines instead of discarding them. The data represented here are the first detailed report on characterization and differentiation of an Indian hESC line generated from a PGD analyzed embryo.
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Affiliation(s)
- Arundhati Mandal
- Regenerative Medicine, Reliance Life Sciences Pvt Ltd, Dhirubhai Ambani Life Sciences Centre, R-282, TTC Industrial Area of MIDC, Thane Belapur Road, Rabale, Navi Mumbai, 400 701, India.
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Biancotti JC, Narwani K, Mandefro B, Golan-Lev T, Buehler N, Hill D, Svendsen CN, Benvenisty N. The in vitro survival of human monosomies and trisomies as embryonic stem cells. Stem Cell Res 2012; 9:218-24. [DOI: 10.1016/j.scr.2012.07.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 07/11/2012] [Accepted: 07/15/2012] [Indexed: 11/26/2022] Open
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Forschung mit humanen embryonalen Stammzellen in Deutschland. GYNAKOLOGISCHE ENDOKRINOLOGIE 2012. [DOI: 10.1007/s10304-012-0477-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Zucchelli M, Ström S, Holm F, Malmgren H, Sahlén S, Religa P, Hovatta O, Kere J, Inzunza J. In vivo differentiated human embryonic stem cells can acquire chromosomal aberrations more frequently than in vitro during the same period. Stem Cells Dev 2012; 21:3363-71. [PMID: 22709429 DOI: 10.1089/scd.2012.0066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Human embryonic stem cells (hESCs) are regarded as a promising approach to generate transplantable cells for the treatment of several diseases. These cells offer an immense potential as a source of cells for regenerative medicine, but the possible ability of these cells to produce tumors in vivo presents a major impediment for the achievement of this potential in clinical reality. hESCs can obtain growth advantages in vitro by acquired mutations, a phenomenon called culture adaptation. The most common chromosome modifications involve chromosomes 12, 17, and X. The mechanisms that may influence chromosome modification in hESCs are not well known. We have performed a comparative in vitro and in vivo study on 3 hESC lines produced in our laboratory to see if there are changes also during in vivo growth. In vivo differentiated cells and in vitro cultured hESCs were analyzed by using a high-resolution Affymetrix SNP 6.0 array revealing DNA copy number variations. We were able, for the first time, to identify chromosomal aberrations that had occurred in vivo in one out of the 3 hESC lines. In the hESC line HS364 differentiated in vivo, an amplification of the whole X chromosome was detected, possibly due to mosaicism of XY and XX cells. In the hESC line HS366, array results showed small amplifications and gains. The third hESC line (HS368) was less altered, but contained also a new gain verified by fluorescent in situ hybridization in a teratoma in 21% of the cells. These results indicate that mutations occur during the in vivo differentiation process as well as in vitro. The potential of precancerous mutations in in-vivo conditions is important to consider for safety measures, and underlines the necessity to remove all pluripotent stem cells from the differentiated cell population that will be transplanted.
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Affiliation(s)
- Marco Zucchelli
- Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Karolinska University Hospital, Huddinge, Stockholm, Sweden
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Screening of human pluripotent stem cells using CGH and FISH reveals low-grade mosaic aneuploidy and a recurrent amplification of chromosome 1q. Eur J Hum Genet 2012; 20:1248-55. [PMID: 22713809 DOI: 10.1038/ejhg.2012.128] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Pluripotency and proliferative capacity of human embryonic stem cells (hESCs) make them a promising source for basic and applied research as well as in therapeutic medicine. The introduction of human induced pluripotent cells (hiPSCs) holds great promise for patient-tailored regenerative medicine therapies. However, for hESCs and hiPSCs to be applied for therapeutic purposes, long-term genomic stability in culture must be maintained. Until recently, G-banding analysis was considered as the default approach for detecting chromosomal abnormalities in stem cells. Our goal in this study was to apply fluorescence in-situ hybridization (FISH) and comparative genomic hybridization (CGH) for the screening of pluripotent stem cells, which will enable us identifying chromosomal abnormalities in stem cells genome with a better resolution. We studied three hESC lines and two hiPSC lines over long-term culture. Aneuploidy rates were evaluated at different passages, using FISH probes (12,13,16,17,18,21,X,Y). Genomic integrity was shown to be maintained at early passages of hESCs and hiPSCs but, at late passages, we observed low rates mosaiciam in hESCs, which implies a direct correlation between number of passages and increased aneuploidy rate. In addition, CGH analysis revealed a recurrent genomic instability, involving the gain of chromosome 1q. This finding was detected in two unrelated cell lines of different origin and implies that gains of chromosome 1q may endow a clonal advantage in culture. These findings, which could only partially be detected by conventional cytogenetic methods, emphasize the importance of using molecular cytogenetic methods for tracking genomic instability in stem cells.
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36
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Fishman B, Segev H, Kopper O, Nissenbaum J, Schulman M, Benvenisty N, Itskovitz-Eldor J, Kitsberg D. Targeting Pancreatic Progenitor Cells in Human Embryonic Stem Cell Differentiation for the Identification of Novel Cell Surface Markers. Stem Cell Rev Rep 2012; 8:792-802. [DOI: 10.1007/s12015-012-9363-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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37
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Kopper O, Benvenisty N. Stepwise differentiation of human embryonic stem cells into early endoderm derivatives and their molecular characterization. Stem Cell Res 2012; 8:335-45. [DOI: 10.1016/j.scr.2011.12.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 12/08/2011] [Accepted: 12/12/2011] [Indexed: 01/07/2023] Open
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Abstract
Human embryonic stem cells (HESCs) are of great interest in biology and medicine due to their ability to grow indefinitely in culture while maintaining their ability to differentiate into all different cell types in the human body. In addition, HESCs can be used for better understanding the key developmental processes and can, therefore, serve for studying genetic disorders for which no good research model exists. Preimplantation genetic diagnosis of in vitro derived embryos results in affected-spare blastocysts with specific known inherited mutations.These affected blastocysts can be used for the derivation of disease-bearing HESCs, which would serve for studying the molecular and pathophysiological mechanisms underlying the genetic disease for which they were diagnosed. This chapter describes the methods to derive HESCs carrying mutations for inherited disorders.
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Biancotti JC, Lavon N. Derivation, expansion, and characterization of human embryonic stem cell lines from aneuploid embryos. Methods Mol Biol 2012; 873:163-78. [PMID: 22528354 DOI: 10.1007/978-1-61779-794-1_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Human embryonic stem cells (hESCs) are an invaluable cell source to study human embryogenesis and development and for exploring the nature of human diseases. Moreover, hESCs can serve as an unlimited source of cells for cell therapy. The first hESC lines were derived from frozen blastocyst-stage embryos. In the past 12 years, the field evolved and the hESC lines are derived from pre-embryos in various developmental stages using several techniques. In parallel, the wide use of hESCs triggered the development of materials and methods for expansion of the cell lines derived. Here, we describe our method for derivation, expansion, and characterization of hESC lines from pre-embryos that were diagnosed to carry aneuploid cells and were destined to be discarded.
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Affiliation(s)
- Juan-Carlos Biancotti
- Stem Cell Unit, Department of Genetics, The Institute of Life Sciences, The Hebrew University, Jerusalem, Israel
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40
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Biancotti JC, Benvenisty N. Aneuploid human embryonic stem cells: origins and potential for modeling chromosomal disorders. Regen Med 2011; 6:493-503. [PMID: 21749207 DOI: 10.2217/rme.11.27] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Chromosomal aneuploidies are widely recognized genetic disorders in humans that often lead to spontaneous abortion. Aneuploid fetuses that survive to term commonly exhibit impaired developmental growth and mental retardation in addition to multiple congenital malformations. Preimplantation genetic screening is used to detect chromosomal aneuploidies in early embryos. Human embryonic stem cell (ESC) cell lines generated from aneuploid embryos created a unique repository of cell lines. The spectrum of aneuploidies in these ESC lines reflects the range of common embryonic chromosomal aberrations and significantly differs from the spectrum of aneuploid human ESC lines generated by cell adaptation in culture. The aneuploid human ESC lines represent an excellent model to study human chromosomal abnormalities especially in the early stages of development.
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41
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Diaz Perez SV, Kim R, Li Z, Marquez VE, Patel S, Plath K, Clark AT. Derivation of new human embryonic stem cell lines reveals rapid epigenetic progression in vitro that can be prevented by chemical modification of chromatin. Hum Mol Genet 2011; 21:751-64. [PMID: 22058289 DOI: 10.1093/hmg/ddr506] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Human embryonic stem cells (hESCs) are pluripotent cell types derived from the inner cell mass of human blastocysts. Recent data indicate that the majority of established female XX hESC lines have undergone X chromosome inactivation (XCI) prior to differentiation, and XCI of hESCs can be either XIST-dependent (class II) or XIST-independent (class III). XCI of female hESCs precludes the use of XX hESCs as a cell-based model for examining mechanisms of XCI, and will be a challenge for studying X-linked diseases unless strategies are developed to reactivate the inactive X. In order to recover nuclei with two active X chromosomes (class I), we developed a reprogramming strategy by supplementing hESC media with the small molecules sodium butyrate and 3-deazaneplanocin A (DZNep). Our data demonstrate that successful reprogramming can occur from the XIST-dependent class II nuclear state but not class III nuclear state. To determine whether these small molecules prevent XCI, we derived six new hESC lines under normoxic conditions (UCLA1-UCLA6). We show that class I nuclei are present within the first 20 passages of hESC derivation prior to cryopreservation, and that supplementation with either sodium butyrate or DZNep preserve class I nuclei in the self-renewing state. Together, our data demonstrate that self-renewal and survival of class I nuclei are compatible with normoxic hESC derivation, and that chemical supplementation after derivation provides a strategy to prevent epigenetic progression and retain nuclei with two active X chromosomes in the self-renewing state.
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Affiliation(s)
- Silvia V Diaz Perez
- Department of Molecular Cell and Developmental Biology, University of California, Los Angeles, CA, USA
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42
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Normal human pluripotent stem cell lines exhibit pervasive mosaic aneuploidy. PLoS One 2011; 6:e23018. [PMID: 21857983 PMCID: PMC3156708 DOI: 10.1371/journal.pone.0023018] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Accepted: 07/10/2011] [Indexed: 11/25/2022] Open
Abstract
Human pluripotent stem cell (hPSC) lines have been considered to be homogeneously euploid. Here we report that normal hPSC – including induced pluripotent - lines are karyotypic mosaics of euploid cells intermixed with many cells showing non-clonal aneuploidies as identified by chromosome counting, spectral karyotyping (SKY) and fluorescent in situ hybridization (FISH) of interphase/non-mitotic cells. This mosaic aneuploidy resembles that observed in progenitor cells of the developing brain and preimplantation embryos, suggesting that it is a normal, rather than pathological, feature of stem cell lines. The karyotypic heterogeneity generated by mosaic aneuploidy may contribute to the reported functional and phenotypic heterogeneity of hPSCs lines, as well as their therapeutic efficacy and safety following transplantation.
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43
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Lifantseva N, Koltsova A, Krylova T, Yakovleva T, Poljanskaya G, Gordeeva O. Expression patterns of cancer-testis antigens in human embryonic stem cells and their cell derivatives indicate lineage tracks. Stem Cells Int 2011; 2011:795239. [PMID: 21785609 PMCID: PMC3140037 DOI: 10.4061/2011/795239] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Accepted: 04/25/2011] [Indexed: 11/20/2022] Open
Abstract
Pluripotent stem cells can differentiate into various lineages but undergo genetic and epigenetic changes during long-term cultivation and, therefore, require regular monitoring. The expression patterns of cancer-testis antigens (CTAs) MAGE-A2, -A3, -A4, -A6, -A8, -B2, and GAGE were examined in undifferentiated human embryonic stem (hES) cells, their differentiated derivatives, teratocarcinoma (hEC) cells, and cancer cell lines of neuroectodermal and mesodermal origin. Undifferentiated hES cells and embryoid body cells expressed MAGE-A3, -A6, -A4, -A8, and GAGEs while later differentiated derivatives expressed only MAGE-A8 or MAGE-A4. Likewise, mouse pluripotent stem cells also express CTAs of Magea but not Mageb family. Despite similarity of the hES and hEC cell expression patterns, MAGE-A2 and MAGE-B2 were detected only in hEC cells but not in hES cells. Moreover, our analysis has shown that CTAs are aberrantly expressed in cancer cell lines and display low tissue specificity. The identification of CTA expression patterns in pluripotent stem cells and their derivatives may be useful for isolation of abnormally CTA-expressing cells to improve the safety of stem-cell based therapy.
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Affiliation(s)
- Nadya Lifantseva
- Kol'tsov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, Moscow 119334, Russia
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44
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Ben-Yosef D, Amit A, Malcov M, Frumkin T, Ben-Yehudah A, Eldar I, Mey-Raz N, Azem F, Altarescu G, Renbaum P, Beeri R, Varshaver I, Eldar-Geva T, Epsztejn-Litman S, Levy-Lahad E, Eiges R. Female sex bias in human embryonic stem cell lines. Stem Cells Dev 2011; 21:363-72. [PMID: 21585244 DOI: 10.1089/scd.2011.0102] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The factors limiting the rather inefficient derivation of human embryonic stem cells (HESCs) are not fully understood. The aim of this study was to analyze the sex ratio in our 42 preimplantation genetic diagnosis (PGD)-HESC lines, in an attempt to verify its affect on the establishment of HESC lines. The ratio between male and female PGD-derived cell lines was compared. We found a significant increase in female cell lines (76%). This finding was further confirmed by a meta-analysis for combining the results of all PGD-derived HESC lines published to date (148) and all normal karyotyped HESC lines derived from spare in vitro fertilization embryos worldwide (397). Further, gender determination of embryos demonstrated that this difference originates from the actual derivation process rather than from unequal representation of male and female embryos. It can therefore be concluded that the clear-cut tendency for female preponderance is attributed to suboptimal culture conditions rather than from a true gender imbalance in embryos used for derivation of HESC lines. We propose a mechanism in which aberrant X chromosome inactivation and/or overexpression of critical metabolic X-linked genes might explain this sex dimorphism.
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Affiliation(s)
- Dalit Ben-Yosef
- Department of Cell and Developmental Biology Sackler Medical School, Tel Aviv Sourasky Medical Center, Tel Aviv University, Lis Maternity Hospital, Tel Aviv, Israel
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45
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O'Leary T, Heindryckx B, Lierman S, Van der Jeught M, Menten B, Deforce D, Cornelissen R, de Sousa Lopes SC, De Sutter P. The Influence of Early Embryo Traits on Human Embryonic Stem Cell Derivation Efficiency. Stem Cells Dev 2011; 20:785-93. [DOI: 10.1089/scd.2010.0338] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Thomas O'Leary
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Björn Heindryckx
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Sylvie Lierman
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | | | - Björn Menten
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Dieter Deforce
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Ria Cornelissen
- Department of Basic Medical Science, Ghent University, Ghent, Belgium
| | | | - Petra De Sutter
- Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
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46
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Li TS, Marbán E. Physiological levels of reactive oxygen species are required to maintain genomic stability in stem cells. Stem Cells 2010; 28:1178-85. [PMID: 20506176 DOI: 10.1002/stem.438] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Stem cell cytogenetic abnormalities constitute a roadblock to regenerative therapies. We investigated the possibility that reactive oxygen species (ROSs) influence genomic stability in cardiac and embryonic stem cells. Karyotypic abnormalities in primary human cardiac stem cells were suppressed by culture in physiological (5%) oxygen, but addition of antioxidants to the medium unexpectedly increased aneuploidy. Intracellular ROS levels were moderately decreased in physiological oxygen, but dramatically decreased by the addition of high-dose antioxidants. Quantification of DNA damage in cardiac stem cells and in human embryonic stem cells revealed a biphasic dose-dependence: antioxidants suppressed DNA damage at low concentrations, but potentiated such damage at higher concentrations. High-dose antioxidants decreased cellular levels of ATM (ataxia-telangiectasia mutated) and other DNA repair enzymes, providing a potential mechanistic basis for the observed effects. These results indicate that physiological levels of intracellular ROS are required to activate the DNA repair pathway for maintaining genomic stability in stem cells. The concept of an "oxidative optimum" for genomic stability has broad implications for stem cell biology and carcinogenesis.
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Affiliation(s)
- Tao-Sheng Li
- The Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, USA.
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47
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Biancotti JC, Narwani K, Buehler N, Mandefro B, Golan-Lev T, Yanuka O, Clark A, Hill D, Benvenisty N, Lavon N. Human embryonic stem cells as models for aneuploid chromosomal syndromes. Stem Cells 2010; 28:1530-40. [PMID: 20641042 DOI: 10.1002/stem.483] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Syndromes caused by chromosomal aneuploidies are widely recognized genetic disorders in humans and often lead to spontaneous miscarriage. Preimplantation genetic screening is used to detect chromosomal aneuploidies in early embryos. Our aim was to derive aneuploid human embryonic stem cell (hESC) lines that may serve as models for human syndromes caused by aneuploidies. We have established 25 hESC lines from blastocysts diagnosed as aneuploid on day 3 of their in vitro development. The hESC lines exhibited morphology and expressed markers typical of hESCs. They demonstrated long-term proliferation capacity and pluripotent differentiation. Karyotype analysis revealed that two-third of the cell lines carry a normal euploid karyotype, while one-third remained aneuploid throughout the derivation, resulting in eight hESC lines carrying either trisomy 13 (Patau syndrome), 16, 17, 21 (Down syndrome), X (Triple X syndrome), or monosomy X (Turner syndrome). On the basis of the level of single nucleotide polymorphism heterozygosity in the aneuploid chromosomes, we determined whether the aneuploidy originated from meiotic or mitotic chromosomal nondisjunction. Gene expression profiles of the trisomic cell lines suggested that all three chromosomes are actively transcribed. Our analysis allowed us to determine which tissues are most affected by the presence of a third copy of either chromosome 13, 16, 17 or 21 and highlighted the effects of trisomies on embryonic development. The results presented here suggest that aneuploid embryos can serve as an alternative source for either normal euploid or aneuploid hESC lines, which represent an invaluable tool to study developmental aspects of chromosomal abnormalities in humans.
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Affiliation(s)
- Juan-Carlos Biancotti
- The International Stem Cell Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
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48
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Ambartsumyan G, Gill RK, Perez SD, Conway D, Vincent J, Dalal Y, Clark AT. Centromere protein A dynamics in human pluripotent stem cell self-renewal, differentiation and DNA damage. Hum Mol Genet 2010; 19:3970-82. [PMID: 20650959 PMCID: PMC2947403 DOI: 10.1093/hmg/ddq312] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Human pluripotent stem cells (hPSCs) hold significant promise for use in regenerative medicine, or as a model to understand human embryo development. However, the basic mechanisms required for proliferation and self-renewal of hPSCs have not been fully uncovered. Proliferation in all eukaryotes is dependent upon highly regulated expression of the histone H3 variant Centromere protein A (CENP-A). In the current study, we demonstrate that hPSCs have a unique messenger ribonucleic acid (mRNA) reserve of CENP-A not found in somatic fibroblasts. Using short hairpin RNA technology to reduce but not ablate CENP-A, we show that CENP-A-depleted hPSCs are still capable of maintaining a functional centromeric mark, whereas fibroblasts are not. However, upon induction of differentiation or DNA damage, hPSCs with depleted CENP-A arrest in G2/M and undergo apoptosis. Analysis of CENP-A dynamics following DNA damage in hPSCs reveals that 60 min after irradiation, CENP-A is found in multiple small nuclear foci that are mutually exclusive to γH2AX as well as CENP-C. Furthermore, following irradiation, hPSCs with depleted CENP-A mount a normal apoptotic response at 6 h; however at 24 h, apoptosis is significantly increased in CENP-A-depleted hPSCs relative to control. Taken together, our results indicate that hPSCs exhibit a unique mechanism for maintaining genomic integrity by possessing the flexibility to reduce the amount of CENP-A required to maintain a functional centromere under self-renewing conditions, and maintaining a reserve of CENP-A mRNA to rebuild the centromere following differentiation or DNA damage.
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Affiliation(s)
- Gayane Ambartsumyan
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, Los Angeles, CA 90095, USA
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49
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FAN Y, LUO Y, CHEN X, SUN X. A modified culture medium increases blastocyst formation and the efficiency of human embryonic stem cell derivation from poor-quality embryos. J Reprod Dev 2010; 56:533-9. [PMID: 20657158 DOI: 10.1262/jrd.09-225m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Human embryonic stem cells (HESCs) are defined as self-renewing cells that retain their ability to differentiate into all cell types of the body. They have enormous potential in medical applications and as a model for early human development. There is a need for derivation of new HESC lines to meet emerging requirements for their use in cell replacement therapies, disease modeling, and basic research. Here, we describe a modified culture medium containing human recombinant leukemia inhibitory factor and human basic fibroblast growth factor that significantly increases the number of human blastocysts formed and their quality, as well as the efficiency of HESC derivation from poor-quality embryos. Culturing poor-quality embryos in modified medium resulted in a two-fold increase in the blastocyst formation rate and a seven-fold increase over the derivation efficiency in conventional medium. We derived 15 HESC lines from poor-quality embryos cultured in modified culture medium and two HESC lines from quality embryos cultured in conventional culture medium. All cell lines shared typical human pluripotent stem cell features including similar morphology, normal karyotypes, expression of alkaline phosphatase, pluripotency genes, such as Oct4, and cell surface markers (SSEA-4, TRA-1-60, TRA-1-81), the ability to form teratomas in SCID mice, and the ability to differentiate into cells of three embryonic germ layers in vitro. Our data suggest that poor-quality embryos that have reached the blastocyst stage in our modified culture medium are a robust source for normal HESC line derivation.
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Affiliation(s)
- Yong FAN
- Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical College, Guangzhou, Guangdong, China
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50
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Dvash T, Lavon N, Fan G. Variations of X chromosome inactivation occur in early passages of female human embryonic stem cells. PLoS One 2010; 5:e11330. [PMID: 20593031 PMCID: PMC2892515 DOI: 10.1371/journal.pone.0011330] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Accepted: 05/27/2010] [Indexed: 12/22/2022] Open
Abstract
X chromosome inactivation (XCI) is a dosage compensation mechanism essential for embryonic development and cell physiology. Human embryonic stem cells (hESCs) derived from inner cell mass (ICM) of blastocyst stage embryos have been used as a model system to understand XCI initiation and maintenance. Previous studies of undifferentiated female hESCs at intermediate passages have shown three possible states of XCI; 1) cells in a pre-XCI state, 2) cells that already exhibit XCI, or 3) cells that never undergo XCI even upon differentiation. In this study, XCI status was assayed in ten female hESC lines between passage 5 and 15 to determine whether XCI variations occur in early passages of hESCs. Our results show that three different states of XCI already exist in the early passages of hESC. In addition, we observe one cell line with skewed XCI and preferential expression of X-linked genes from the paternal allele, while another cell line exhibits random XCI. Skewed XCI in undifferentiated hESCs may be due to clonal selection in culture instead of non-random XCI in ICM cells. We also found that XIST promoter methylation is correlated with silencing of XIST transcripts in early passages of hESCs, even in the pre-XCI state. In conclusion, XCI variations already take place in early passages of hESCs, which may be a consequence of in vitro culture selection during the derivation process. Nevertheless, we cannot rule out the possibility that XCI variations in hESCs may reflect heterogeneous XCI states in ICM cells that stochastically give rise to hESCs.
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Affiliation(s)
- Tamar Dvash
- Department of Human Genetics and The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Neta Lavon
- The International Stem Cell Research Institute, Cedars Sinai Medical Center, Los Angeles, California, United States of America
| | - Guoping Fan
- Department of Human Genetics and The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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