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Weier JF, Ferlatte C, Baumgartner A, Nguyen HN, Weier BA, Weier HUG. Analysis of human invasive cytotrophoblasts demonstrates mosaic aneuploidy. PLoS One 2023; 18:e0284317. [PMID: 37478076 PMCID: PMC10361533 DOI: 10.1371/journal.pone.0284317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 03/28/2023] [Indexed: 07/23/2023] Open
Abstract
A total of 24 chromosome-specific fluorescence in situ hybridization probes for interphase nucleus analysis were developed to determine the chromosomal content of individual human invasive cytotrophoblasts derived from in vitro cultured assays. At least 75% of invasive cytotrophoblasts were hyperdiploid and the total number of chromosomes ranged from 47 to 61. The results also demonstrated that these hyperdiploid invasive cytotrophoblasts showed significant heterogeneity. The most copy number gains were observed for chromosomes 13, 14, 15, 19, 21, and 22 with average copy number greater than 2.3. A parallel study using primary invasive cytotrophoblasts also showed a similar trend of copy number changes. Conclusively, 24-chromosome analysis of human non-proliferating cytotrophoblasts (interphase nuclei) was achieved. Hyperdiploidy and chromosomal heterogeneity without endoduplication in invasive cytotrophoblasts may suggest a selective advantage for invasion and short lifespan during normal placental development.
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Affiliation(s)
- Jingly F Weier
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California (U.C.), San Francisco, California, United States of America
- Life Sciences Division, U.C. E.O. Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Christy Ferlatte
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California (U.C.), San Francisco, California, United States of America
| | - Adolf Baumgartner
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California (U.C.), San Francisco, California, United States of America
- Life Sciences Division, U.C. E.O. Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Ha Nam Nguyen
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California (U.C.), San Francisco, California, United States of America
| | - Beatrice A Weier
- Golden State Dermatology, Walnut Creek, California, United States of America
| | - Heinz-Ulrich G Weier
- Life Sciences Division, U.C. E.O. Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
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Whitney JB, Schiewe MC, Anderson RE. Single center validation of routine blastocyst biopsy implementation. J Assist Reprod Genet 2016; 33:1507-1513. [PMID: 27544278 PMCID: PMC5125149 DOI: 10.1007/s10815-016-0792-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/09/2016] [Indexed: 11/24/2022] Open
Abstract
Purpose The study aims to contrast the efficacy of trophectoderm biopsy preimplantation genetic screening (PGS)/vitrification (VTF)-all cycles to past treatment protocols. Specifically, do these applied technologies increase live birth rates on a per cycle/first transfer basis? Materials and methods An observational, retrospective cohort study of first transfer outcomes was performed in two groups. Group 1 (PGS) included PGS/VTF-all cycles, and group 2 (no PGS) included the first transfer from non-PGS fresh cycles or VTF-ALL cycles. In group 1, all blastocysts were biopsied on days 5/6, vitrified and array CGH performed. Group 2 patients had embryo transfers on day 3 or day 5. All blastocysts were vitrified and warmed according to μS-VTF protocols. Clinical pregnancies and implantation were confirmed by ultrasound and live birth information attained. Results were stratified by age with donor cycles excluded, and to eliminate bias, the same groups were then validated on a per cycle basis. Chi-squared used to determine significance. Results Analyzing 287 embryo transfers and 1,000+ PGS-tested blastocysts, an overall 97 % increase in live births favored group 1 (PGS). When utilizing PGS/VTF-ALL cycles, patients under 43 years old exhibited higher implantation, clinical pregnancy, and ongoing/live birth rates. Re-analyzing the data to include all cycles initiated revealed higher live birth rates in group 1 age groups ≤34 and 38–40 years old. Conclusion Validating PGS on a per cycle basis eliminated data bias by including patients without blastocysts to biopsy or euploid embryos. Clearly, PGS uses blastocysts more efficiently to achieve success, while many women over 40 may benefit most by understanding why some failures occur. Support None Electronic supplementary material The online version of this article (doi:10.1007/s10815-016-0792-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | - Robert E Anderson
- Ovation Fertility, Newport Beach, CA, USA.,Southern California Center for Reproductive Medicine, Newport Beach, CA, USA
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Ma GC, Chen HF, Yang YS, Lin WH, Tsai FP, Lin CF, Chiu C, Chen M. A pilot proof-of-principle study to compare fresh and vitrified cycle preimplantation genetic screening by chromosome microarray and next generation sequencing. Mol Cytogenet 2016; 9:25. [PMID: 27006692 PMCID: PMC4802588 DOI: 10.1186/s13039-016-0238-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 03/16/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Single embryo transfer (SET) has been utilized as a strategy to reduce the chance of multifetal gestations in in vitro fertilization (IVF) but lower pregnancy rate remains a concern. Recent studies showed that favorable outcome regarding SET can be achieved by selecting embryos with "more normal" genetic components. We explored the use of rapid array comparative genomic hybridization (aCGH) to select blastocysts for fresh SET and compared with the protocols adopting vitrified (ultrarapidly frozen) embryo transfer cycle. Validation of the rapid protocol of aCGH and comparison of the result with the regular protocol of aCGH and next generation sequencing (NGS) are also performed. RESULTS First-time IVF patients with normal karyotype (n = 21) were enrolled for elective fresh SET cycle (n = 8; designated as fresh SET group) or vitrified embryo transfer cycle (n = 13; designated as vitrified ET group) coupling with comprehensive chromosomal screening by a 9-h rapid aCGH from Day 5 trophectoderm (TE) biopsy. In fresh SET group, 86 blastocysts (10.8 blastocysts/patient) were biopsied and analyzed. Aneuploidy was detected in 53.5 % (46/86) of the biopsied blastocysts. All patients had a single embryo transferred on the following day. The clinical pregnancy rate was 87.5 % (7/8) and the ongoing pregnancy rate was 62.5 % (5/8). In vitrified ET group, 58 blastocysts (4.5 blastocysts/patient) were biopsied and 56 blastocysts were analyzed. Aneuploidy was detected in 39.3 % (22/56) of biopsies. The patients accepted for SET or double embryos transfer (DET) in non-stimulated cycles. The clinical pregnancy rate and the ongoing pregnancy rate was 76.9 % (10/13) and 53.8 % (7/13) respectively. Spontaneous abortions occurred in both of the two patient groups. In the series of fresh SET group, no twin pregnancy was noted and at least one healthy baby had been born at gestational age (GA) 37(+6) weeks when submission. The results of PGS by rapid aCGH, regular aCGH and NGS were comparable in most occasions. CONCLUSION This study evaluates the use of rapid aCGH to select blastocysts for fresh SET and demonstrates its feasibility in a real clinical IVF program. A successful livebirth is achieved and the favorable outcome is superior to the protocol adopting vitrified ET cycle in our own setting. Additional studies are needed to verify this pilot data and validate its application in large randomized trials.
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Affiliation(s)
- Gwo-Chin Ma
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan.,Institute of Biochemistry, Microbiology and Immunology, Chung-Shan Medical University, Taichung, Taiwan.,Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, Taichung, Taiwan
| | - Hsin-Fu Chen
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan.,Graduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Shih Yang
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan
| | - Wen-Hsiang Lin
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan
| | | | - Chi-Fang Lin
- Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan
| | - Chi Chiu
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming Chen
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Science and Technology, Changhua Christian Hospital Healthcare System, Changhua, Taiwan.,Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Taiwan University, Taipei, Taiwan.,Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan.,Department of Life Science, Tunghai University, Taichung, Taiwan
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Yin BL, Hao HY, Zhang YN, Wei D, Zhang CL. Good quality blastocyst from non-/mono-pronuclear zygote may be used for transfer during IVF. Syst Biol Reprod Med 2016; 62:139-45. [PMID: 26901373 DOI: 10.3109/19396368.2015.1137993] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Bao-Li Yin
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan Province, P.R. China
| | - Hao-Ying Hao
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan Province, P.R. China
| | - Ya-Nan Zhang
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan Province, P.R. China
| | - Duo Wei
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan Province, P.R. China
| | - Cui-Lian Zhang
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan Province, P.R. China
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Joergensen MW, Labouriau R, Hindkjaer J, Stougaard M, Kolevraa S, Bolund L, Agerholm IE, Sunde L. The parental origin correlates with the karyotype of human embryos developing from tripronuclear zygotes. Clin Exp Reprod Med 2015; 42:14-21. [PMID: 25874169 PMCID: PMC4390676 DOI: 10.5653/cerm.2015.42.1.14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 12/29/2014] [Accepted: 01/19/2015] [Indexed: 11/12/2022] Open
Abstract
Objective It has previously been suggested that embryos developing from intracytoplasmic sperm-injected (ICSI) zygotes with three pronuclei (3PN) are endowed with a mechanism for self-correction of triploidy to diploidy. 3PN are also observed in zygotes after conventional in vitro fertilization (IVF). The parental origin, however, differs between the two fertilization methods. Whereas the vast majority of 3PN IVF zygotes are of dispermic origin and thus more likely to have two centrioles, the 3PN ICSI zygotes are digynic in origin and therefore, more likely to have one centriole. In the present study, we examine whether the parental origin of 3PN embryos correlates with the karyotype. Methods The karyotype of each nucleus was estimated using four sequential fluorescence in situ hybridizations-each with two probes-resulting in quantitative information of 8 different chromosomes. The karyotypes were then compared and correlated to the parental origin. Results 3PN ICSI embryos displayed a significantly larger and more coordinated reduction from the assumed initial 3 sets of chromosomes than 3PN IVF embryos. Conclusion The differences in the parental origin-and hence the number of centrioles-between the 3PN IVF and the 3PN ICSI zygotes are likely to be the cause of the differences in karyotypes.
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Affiliation(s)
- Mette Warming Joergensen
- Department of Clinical Genetics, Vejle Hospital, Vejle, Denmark. ; Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Johnny Hindkjaer
- The Fertility Clinic and Centre for Preimplantation Genetic diagnosis, Aarhus University Hospital, Skejby, Denmark
| | - Magnus Stougaard
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Steen Kolevraa
- Department of Clinical Genetics, Vejle Hospital, Vejle, Denmark
| | - Lars Bolund
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | | | - Lone Sunde
- Department of Biomedicine, Aarhus University, Aarhus, Denmark. ; Department of Clinical Genetics, Aarhus University Hospital, Skejby, Denmark
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Zakharova EE, Zaletova VV, Krivokharchenko AS. Biopsy of human morula-stage embryos: outcome of 215 IVF/ICSI cycles with PGS. PLoS One 2014; 9:e106433. [PMID: 25191937 PMCID: PMC4156362 DOI: 10.1371/journal.pone.0106433] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 07/29/2014] [Indexed: 12/28/2022] Open
Abstract
Preimplantation genetic diagnosis (PGD) is commonly performed on biopsies from 6-8-cell-stage embryos or blastocyst trophectoderm obtained on day 3 or 5, respectively. Day 4 human embryos at the morula stage were successfully biopsied. Biopsy was performed on 709 morulae from 215 ICSI cycles with preimplantation genetic screening (PGS), and 3-7 cells were obtained from each embryo. The most common vital aneuploidies (chromosomes X/Y, 21) were screened by fluorescence in situ hybridization (FISH). No aneuploidy was observed in 72.7% of embryos, 91% of those developed to blastocysts. Embryos were transferred on days 5-6. Clinical pregnancy was obtained in 32.8% of cases, and 60 babies were born. Patients who underwent ICSI/PGS treatment were compared with those who underwent standard ICSI treatment by examining the percentage of blastocysts, pregnancy rate, gestational length, birth height and weight. No significant differences in these parameters were observed between the groups. Day 4 biopsy procedure does not adversely affect embryo development in vitro or in vivo. The increased number of cells obtained by biopsy of morulae might facilitate diagnostic screening. There is enough time after biopsy to obtain PGD results for embryo transfer on day 5-6 in the current IVF cycle.
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Affiliation(s)
- Elena E. Zakharova
- Center for Reproductive Medicine MAMA, Moscow, Russian Federation
- * E-mail:
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Yang Z, Zhang J, Salem SA, Liu X, Kuang Y, Salem RD, Liu J. Selection of competent blastocysts for transfer by combining time-lapse monitoring and array CGH testing for patients undergoing preimplantation genetic screening: a prospective study with sibling oocytes. BMC Med Genomics 2014; 7:38. [PMID: 24954518 PMCID: PMC4077552 DOI: 10.1186/1755-8794-7-38] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 06/12/2014] [Indexed: 11/19/2022] Open
Abstract
Background Recent advances in time-lapse monitoring in IVF treatment have provided new morphokinetic markers for embryonic competence. However, there is still very limited information about the relationship between morphokinetic parameters, chromosomal compositions and implantation potential. Accordingly, this study aimed at investigating the effects of selecting competent blastocysts for transfer by combining time-lapse monitoring and array CGH testing on pregnancy and implantation outcomes for patients undergoing preimplantation genetic screening (PGS). Methods A total of 1163 metaphase II (MII) oocytes were retrieved from 138 PGS patients at a mean age of 36.6 ± 2.4 years. These sibling MII oocytes were then randomized into two groups after ICSI: 1) Group A, oocytes (n = 582) were cultured in the time-lapse system and 2) Group B, oocytes (n = 581) were cultured in the conventional incubator. For both groups, whole genomic amplification and array CGH testing were performed after trophectoderm biopsy on day 5. One to two euploid blastocysts within the most predictive morphokinetic parameters (Group A) or with the best morphological grade available (Group B) were selected for transfer to individual patients on day 6. Ongoing pregnancy and implantation rates were compared between the two groups. Results There were significant differences in clinical pregnancy rates between Group A and Group B (71.1% vs. 45.9%, respectively, p = 0.037). The observed implantation rate per embryo transfer significantly increased in Group A compared to Group B (66.2% vs. 42.4%, respectively, p = 0.011). Moreover, a significant increase in ongoing pregnancy rates was also observed in Group A compared to Group B (68.9% vs. 40.5%. respectively, p = 0.019). However, there was no significant difference in miscarriage rate between the time-lapse system and the conventional incubator (3.1% vs. 11.8%, respectively, p = 0.273). Conclusions This is the first prospective investigation using sibling oocytes to evaluate the efficiency of selecting competent blastocysts for transfer by combining time-lapse monitoring and array CGH testing for PGS patients. Our data clearly demonstrate that the combination of these two advanced technologies to select competent blastocysts for transfer results in improved implantation and ongoing pregnancy rates for PGS patients.
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Affiliation(s)
- Zhihong Yang
- ART and REI Division, Pacific Reproductive Center, Torrance, CA, USA.
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Yang Z, Salem SA, Liu X, Kuang Y, Salem RD, Liu J. Selection of euploid blastocysts for cryopreservation with array comparative genomic hybridization (aCGH) results in increased implantation rates in subsequent frozen and thawed embryo transfer cycles. Mol Cytogenet 2013; 6:32. [PMID: 23937723 PMCID: PMC3766007 DOI: 10.1186/1755-8166-6-32] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 06/30/2013] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND In assisted reproductive treatments, embryos remaining after fresh embryo transfer are usually selected for cryopreservation based on traditional morphology assessment. Our previous report has demonstrated that array comparative genomic hybridization (aCGH) screening for IVF patients with good prognosis significantly improves clinical and ongoing pregnancy rates in fresh embryo transfer cycles. The current study further investigates the efficiency of applying aCGH in the selection of euploid embryos for cryopreservation as related to pregnancy and implantation outcomes in subsequent frozen embryo transfer (FET) cycles. METHODS First-time IVF patients with good prognosis undergoing fresh single embryo transfer and having at least one remaining blastocyst for cryopreservation were prospectively randomized into two groups: 1) Group A patients had embryos assessed by morphology first and then by aCGH screening of trophectoderm cells and 2) Group B patients had embryos evaluated by morphology alone. All patients had at least one blastocyst available for cryopreservation after fresh embryo transfer. There were 15 patients in Group A and 23 patients in Group B who failed to conceive after fresh embryo transfer and completed the FET cycles. Blastocyst survival and implantation rates were compared between the two groups. RESULTS There were no significant differences in blastocyst survival rates between Group A and Group B (90.9% vs. 91.3%, respectively; p >0.05). However, a significantly higher implantation rate was observed in the morphology assessment plus aCGH screening group compared to the morphology assessment alone group (65.0% vs. 33.3%, respectively; p = 0.038). There was no miscarriage observed in Group A while a 16.7% miscarriage rate was recorded in Group B (0% vs. 16.7%, respectively; p >0.05). CONCLUSIONS While aCGH screening has been recently applied to select euploid blastocysts for fresh transfer in young, low-risk IVF patients, this is the first prospective study on the impact of aCGH specifically on blastocyst survival and implantation outcomes in the subsequent FET cycles of IVF patients with good prognosis. The present study demonstrates that aCGH screening of blastocysts prior to cryopreservation significantly improves implantation rates and may reduce the risk of miscarriage in subsequent FET cycles. Further randomized clinical studies with a larger sample size are needed to validate these preliminary findings.
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Affiliation(s)
- Zhihong Yang
- ART and PGD Program, Pacific Reproductive Center, Torrance, CA, USA.
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