1
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Oliveira CS, Saraiva NZ, Oliveira LZ. Morphology of 16-cell embryo in bovine: Inside cells, compaction, fragmentation and effects of X-sorted semen. Anat Histol Embryol 2024; 53:e13015. [PMID: 38230835 DOI: 10.1111/ahe.13015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/17/2023] [Accepted: 01/08/2024] [Indexed: 01/18/2024]
Abstract
In mouse embryos, inside cells are allocated in 16-cell embryos through a well-orchestrated sequence of events involving compaction and polarization. The emergence of inside cells is of great importance as itl later gives rise to the inner cell mass and epiblast. In this study, we report the sequence of critical events in embryology (compaction, inside cells allocation and fragmentation) in bovine 72 h.p.i. 9-16 cell embryos, while also investigating the effects of X-sorted semen on these events. We found a wide distribution of total cell numbers among embryos, attributed to an asynchronous cleavage pattern and blastomere death. Additionally, 13% of embryos displayed irregular shapes. The establishment of the inside cell compartment increased (p < 0.01) in embryos with more cells. However, only 53.8% of 16-cell embryos presented inside cells. Compaction was present in 32.4% embryos and was positively correlated (p = 0.03, OR 3.02) with the establishment of inside cells, occurring independently of cell number. Fragmentation was present in 36% embryos, being more frequent (p = 0.01) in embryos with lower cell numbers. A possible association between irregular shape and fragmentation was considered (p = 0.06). The use of X-sorted semen had no effect on most evaluated parameters. However, it did have a marked effect on cleavage rate (p < 0.01) and the arrest of 2- and 4- cell embryos. In conclusion, bovine embryos exhibit an asynchronous cleavage pattern, high levels of fragmentation, and demonstrate compaction and inside cell allocation later in development compared to mouse embryos. Semen X-sorting has major effects on cleavage and embryo arrest. Further studies are needed to elucidate the association between irregularly shaped embryos and fragmentation, as well as the effects of sex on inside cell allocation.
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Affiliation(s)
| | | | - Leticia Zoccolaro Oliveira
- Department of Veterinary Clinics and Surgery, Veterinary School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
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2
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Mathew DJ, Peterson KD, Senn LK, Oliver MA, Ealy AD. Ruminant conceptus-maternal interactions: interferon-tau and beyond. J Anim Sci 2022; 100:6620787. [PMID: 35772752 DOI: 10.1093/jas/skac123] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/05/2022] [Indexed: 12/11/2022] Open
Abstract
Embryonic or fetal loss in cattle is associated with problems that occur during oocyte maturation, early embryonic development, conceptus elongation, maternal recognition of pregnancy (MRP), and/or placental attachment and implantation. Many of these problems manifest as inadequate or asynchronous communication between the developing conceptus and endometrium, resulting in pregnancy failure. This review will provide an overview of how various conceptus-endometrial paracrine signaling systems control the fate of early pregnancy in cattle and other ruminants. We begin by summarizing the actions of interferon-tau, the classic MRP signal in ruminates, and then explore how other secretory factors derived from either the conceptus or endometrium influence establishment and maintenance of pregnancy. Insight into how the endometrium responds to male vs. female conceptuses or conceptuses produced by in vitro methods will also be described. Specific focus will be placed on describing how "omic" technologies and other cutting-edge techniques have assisted with identifying novel conceptus and/or endometrial factors and their functions. Recent findings indicate that the endometrial transcriptome and histotroph are altered by conceptus sex, quality, and origin, suggesting that the endometrium is a sensor of conceptus biochemistry. Although the endometrium has a certain level of flexibility in terms of conceptus-maternal interactions, this interplay is not sufficient to retain some pregnancies. However, new information inspires us to learn more and will help develop technologies that mitigate early embryonic loss and reproductive failure in ruminants and other animals.
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Affiliation(s)
- Daniel J Mathew
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Katie D Peterson
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - L Kirsten Senn
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Mary A Oliver
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Alan D Ealy
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
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3
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Saraiva NZ, Oliveira CS, Almeida NN, Figueiró MR, Quintão CC, Garcia JM. Epigenetic modifiers during in vitro maturation as a strategy to increase oocyte competence in bovine. Theriogenology 2022; 187:95-101. [DOI: 10.1016/j.theriogenology.2022.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 04/13/2022] [Accepted: 04/20/2022] [Indexed: 11/30/2022]
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4
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Sun J, Cui K, Li Z, Gao B, Jiang J, Liu Q, Huang B, Shi D. Histone hyperacetylation may improve the preimplantation development and epigenetic status of cloned embryos. Reprod Biol 2020; 20:237-246. [PMID: 32089505 DOI: 10.1016/j.repbio.2020.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 01/02/2023]
Abstract
The current study investigated the mechanism of mini pig fetal fibroblasts in improving the epigenetic modification and preimplantation development of cloned embryos. The results showed that the increased AcH3K14 level was dose- and time-dependent. Histone hyperacetylation had no significant effect on cell morphology, cell viability, cell cycle, and relative gene (HDAC1, HAT1, DNMT3A, and BAX) expression. The treated cloned embryos had significantly higher development rates and the total nuclei number than the control (27.62 ± 6.94 % vs. 16.14 ± 10.55 %; 43.90 ± 18.39 vs. 33.06 ± 15.87; P < 0.05). The AcH3K14 level in the treated cloned blastocysts was close to that of IVF blastocysts (5.17 ± 0.93 vs. 5.45 ± 1.91, P > 0.05). The gene transcription (CDX2 and OCT4) of the treated cloned blastocysts was significantly up-regulated than the control (3.32 ± 0.51 vs. 2.05 ± 0.30; 1.21 ± 0.18 vs. 0.81 ± 0.09; P < 0.05). The improvement in the cloned embryo development and the partial correction of abnormal acetylation modification were not necessarily related to the cellular characteristics. This could be caused by histone hyperacetylation of mini pig fetal fibroblasts.
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Affiliation(s)
- JunMing Sun
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; Laboratory Animal Center, Guangxi Medical University, Nanning, Guangxi, 530021, China.
| | - KuiQing Cui
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China
| | - ZhiPeng Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China
| | - BangJun Gao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China
| | - JianRong Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China
| | - QingYou Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China
| | - Ben Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China
| | - DeShun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China.
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5
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Carvalheira LDR, Tríbulo P, Borges ÁM, Hansen PJ. Sex affects immunolabeling for histone 3 K27me3 in the trophectoderm of the bovine blastocyst but not labeling for histone 3 K18ac. PLoS One 2019; 14:e0223570. [PMID: 31600298 PMCID: PMC6786533 DOI: 10.1371/journal.pone.0223570] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 09/18/2019] [Indexed: 11/29/2022] Open
Abstract
The mammalian embryo displays sexual dimorphism in the preimplantation period. Moreover, competence of the embryo to develop is dependent on the sire from which the embryo is derived and can be modified by embryokines produced by the endometrium such as colony stimulating factor 2 (CSF2). The preimplantation period is characterized by large changes in epigenetic modifications of DNA and histones. It is possible, therefore, that effects of sex, sire, and embryo regulatory molecules are mediated by changes in epigenetic modifications. Here it was tested whether global levels of two histone modifications in the trophectoderm of the bovine blastocyst were affected by sex, sire, and CSF2. It was found that amounts of immunolabeled H3K27me3 were greater (P = 0.030) for male embryos than female embryos. Additionally, labeling for H3K27me3 and H3K18ac depended upon the bull from which embryos were derived. Although CSF2 reduced the proportion of embryos developing to the blastocyst, there was no effect of CSF2 on labeling for H3K27me3 or H3K18ac. Results indicate that the blastocyst trophoctoderm can be modified epigenetically by embryo sex and paternal inheritance through alterations in histone epigenetic marks.
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Affiliation(s)
- Luciano de R. Carvalheira
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, Florida, United States of America
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Paula Tríbulo
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, Florida, United States of America
| | - Álan M. Borges
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Peter J. Hansen
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, Florida, United States of America
- * E-mail:
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6
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Laguna-Barraza R, Sánchez-Calabuig MJ, Gutiérrez-Adán A, Rizos D, Pérez-Cerezales S. Effects of the HDAC inhibitor scriptaid on the in vitro development of bovine embryos and on imprinting gene expression levels. Theriogenology 2018; 110:79-85. [PMID: 29353144 DOI: 10.1016/j.theriogenology.2017.12.043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 12/11/2017] [Accepted: 12/29/2017] [Indexed: 01/12/2023]
Abstract
This study examines the effects of the histone deacetylation inhibitor scriptaid (SCR) on preimplantation embryo development in vitro and on imprinting gene expression. We hypothesized that SCR would increase histone acetylation levels, enhance embryonic genome activation, and regulate imprinting and X-chromosome inactivation (XCI) in in vitro produced bovine embryos. Zygotes were cultured in vitro in presence or absence of SCR added at different time points. We assessed cleavage and blastocyst rates as well as the quality of blastocysts through: (i) differential cell counts; (ii) survival after vitrification/thawing and (iii) gene expression analysis -including imprinted genes. Blastocyst yields were not different in the control and experimental groups. While no significant differences were observed between groups in total cell or trophectoderm cell numbers, SCR treatment reduced the number of inner cell mass cells and improved the survival of vitrified embryos. Further, genes involved in the mechanism of paternal imprinting (GRB10, GNAS, XIST) were downregulated in presence of SCR compared with controls. These observations suggest SCR prevents deacetylation of paternally imprinting control regions and/or their up-regulation, as these events took place in controls. Whether or not such reductions in XIST and imprinting gene expression are beneficial for post implantation development remains to be clarified.
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Affiliation(s)
| | - M J Sánchez-Calabuig
- Dpto de Reproducción Animal, INIA, Madrid, Spain; Dpto de Medicina y Cirugía Animal, Facultad de Veterinaria, UCM, Madrid, Spain
| | | | - D Rizos
- Dpto de Reproducción Animal, INIA, Madrid, Spain
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7
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Adamkova K, Yi YJ, Petr J, Zalmanova T, Hoskova K, Jelinkova P, Moravec J, Kralickova M, Sutovsky M, Sutovsky P, Nevoral J. SIRT1-dependent modulation of methylation and acetylation of histone H3 on lysine 9 (H3K9) in the zygotic pronuclei improves porcine embryo development. J Anim Sci Biotechnol 2017; 8:83. [PMID: 29118980 PMCID: PMC5664433 DOI: 10.1186/s40104-017-0214-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 09/25/2017] [Indexed: 12/31/2022] Open
Abstract
Background The histone code is an established epigenetic regulator of early embryonic development in mammals. The lysine residue K9 of histone H3 (H3K9) is a prime target of SIRT1, a member of NAD+-dependent histone deacetylase family of enzymes targeting both histone and non-histone substrates. At present, little is known about SIRT1-modulation of H3K9 in zygotic pronuclei and its association with the success of preimplantation embryo development. Therefore, we evaluated the effect of SIRT1 activity on H3K9 methylation and acetylation in porcine zygotes and the significance of H3K9 modifications for early embryonic development. Results Our results show that SIRT1 activators resveratrol and BML-278 increased H3K9 methylation and suppressed H3K9 acetylation in both the paternal and maternal pronucleus. Inversely, SIRT1 inhibitors nicotinamide and sirtinol suppressed methylation and increased acetylation of pronuclear H3K9. Evaluation of early embryonic development confirmed positive effect of selective SIRT1 activation on blastocyst formation rate (5.2 ± 2.9% versus 32.9 ± 8.1% in vehicle control and BML-278 group, respectively; P ≤ 0.05). Stimulation of SIRT1 activity coincided with fluorometric signal intensity of ooplasmic ubiquitin ligase MDM2, a known substrate of SIRT1 and known limiting factor of epigenome remodeling. Conclusions We conclude that SIRT1 modulates zygotic histone code, obviously through direct deacetylation and via non-histone targets resulting in increased H3K9me3. These changes in zygotes lead to more successful pre-implantation embryonic development and, indeed, the specific SIRT1 activation due to BML-278 is beneficial for in vitro embryo production and blastocyst achievement.
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Affiliation(s)
- Katerina Adamkova
- Department of Veterinary Sciences, Faculty of Agriculture, Food and Natural Resources, Czech University of Life Sciences Prague, 6-Suchdol, Prague, Czech Republic
| | - Young-Joo Yi
- Division of Biotechnology, Safety, Environment and Life Science Institute, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, 54596 South Korea
| | - Jaroslav Petr
- Institute of Animal Science, 10-Uhrineves, Prague, Czech Republic
| | - Tereza Zalmanova
- Department of Veterinary Sciences, Faculty of Agriculture, Food and Natural Resources, Czech University of Life Sciences Prague, 6-Suchdol, Prague, Czech Republic.,Institute of Animal Science, 10-Uhrineves, Prague, Czech Republic
| | - Kristyna Hoskova
- Department of Veterinary Sciences, Faculty of Agriculture, Food and Natural Resources, Czech University of Life Sciences Prague, 6-Suchdol, Prague, Czech Republic.,Institute of Animal Science, 10-Uhrineves, Prague, Czech Republic
| | - Pavla Jelinkova
- Department of Veterinary Sciences, Faculty of Agriculture, Food and Natural Resources, Czech University of Life Sciences Prague, 6-Suchdol, Prague, Czech Republic
| | - Jiri Moravec
- Proteomic Laboratory, Biomedical Center of Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Milena Kralickova
- Laboratory of Reproductive Medicine of Biomedical Center, Charles University, Pilsen, Czech Republic.,Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Miriam Sutovsky
- Division of Animal Science, University of Missouri, Columbia, MO USA
| | - Peter Sutovsky
- Division of Animal Science, University of Missouri, Columbia, MO USA.,Departments of Obstetrics, Gynecology and Women's Health, University of Missouri, Columbia, MO USA
| | - Jan Nevoral
- Department of Veterinary Sciences, Faculty of Agriculture, Food and Natural Resources, Czech University of Life Sciences Prague, 6-Suchdol, Prague, Czech Republic.,Laboratory of Reproductive Medicine of Biomedical Center, Charles University, Pilsen, Czech Republic.,Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
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8
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Zhang L, Huang Y, Wu Y, Si J, Huang Y, Jiang Q, Lan G, Guo Y, Jiang H. Scriptaid Upregulates Expression of Development-Related Genes, Inhibits Apoptosis, and Improves the Development of Somatic Cell Nuclear Transfer Mini-Pig Embryos. Cell Reprogram 2017; 19:19-26. [DOI: 10.1089/cell.2016.0033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- Li Zhang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yuemeng Huang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yanjun Wu
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Jinglei Si
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yanna Huang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Qinyang Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Ganqiu Lan
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yafen Guo
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Hesheng Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
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9
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Oliveira C, Saraiva N, Lima MD, Oliveira L, Serapião R, Garcia J, Borges C, Camargo L. Cell death is involved in sexual dimorphism during preimplantation development. Mech Dev 2016; 139:42-50. [DOI: 10.1016/j.mod.2015.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 12/23/2015] [Accepted: 12/24/2015] [Indexed: 11/26/2022]
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10
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Kim J, Kim JH, Jee BC, Suh CS, Kim SH. Is There a Link Between Expression Levels of Histone Deacetylase/Acetyltransferase in Mouse Sperm and Subsequent Blastocyst Development? Reprod Sci 2015; 22:1387-92. [PMID: 25868580 DOI: 10.1177/1933719115580997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Histone acetylation has been known to be significant in spermatogenesis. Histone acetylation is regulated by the act of histone deacetylases (HDACs) and histone acetyltransferases (HATs). We investigated the link between expression levels of HDACs and HATs in mouse sperm and subsequent blastocyst formation rate. In the univariate analysis, expression levels of HDAC1 and HAT were generally not associated with the blastocyst formation rate. When divided by the mature oocyte number category, a significant positive association was observed between the expression levels of HDAC1 and the blastocyst-forming rate in the highest (> 75th) percentile group (a group with ≥34 mature oocytes). In conclusion, expression of sperm HDAC1 could be considered as a possible predictor of embryo development in mice with high ovarian response.
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Affiliation(s)
- Jayeon Kim
- Department of Obstetrics and Gynecology, Cha Gangnam Hospital, Cha University, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - Ji-Hee Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Bundang, South Korea
| | - Byung-Chul Jee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea
| | - Chang-Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, South Korea
| | - Seok-Hyun Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Bundang, South Korea
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11
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The histone deacetylase inhibitor Scriptaid improves in vitro developmental competence of ovine somatic cell nuclear transferred embryos. Theriogenology 2014; 81:332-9. [DOI: 10.1016/j.theriogenology.2013.09.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 09/15/2013] [Accepted: 09/30/2013] [Indexed: 11/18/2022]
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12
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Isom SC, Stevens JR, Li R, Spollen WG, Cox L, Spate LD, Murphy CN, Prather RS. Transcriptional profiling by RNA-Seq of peri-attachment porcine embryos generated by a variety of assisted reproductive technologies. Physiol Genomics 2013; 45:577-89. [PMID: 23695885 DOI: 10.1152/physiolgenomics.00094.2012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Substantial mortality of in vitro manipulated porcine embryos is observed during peri-attachment development. Herein we describe our efforts to characterize the transcriptomes of embryonic disc (ED) and trophectoderm (TE) cells from porcine embryos derived from in vivo fertilization, in vitro fertilization (IVF), parthenogenetic oocyte activation (PA), and somatic cell nuclear transfer (SCNT) on days 10, 12, and 14 of gestation. The IVF, PA, and SCNT embryos were generated with in vitro matured oocytes and were cultured overnight in vitro before being transferred to recipient females. Sequencing of cDNA from the resulting embryonic samples was accomplished with the Genome Analyzer IIx platform from Illumina. Reads were aligned to a custom-built swine transcriptome. A generalized linear model was fit for ED and TE samples separately, accounting for embryo type, gestation day, and their interaction. Those genes with significant differences between embryo types were characterized in terms of gene ontologies and KEGG pathways. Transforming growth factor-β signaling was downregulated in the EDs of IVF embryos. In TE cells from IVF embryos, ubiquitin-mediated proteolysis and ErbB signaling were aberrantly regulated. Expression of genes involved in chromatin modification, gene silencing by RNA, and apoptosis was significantly disrupted in ED cells from SCNT embryos. In summary, we have used high-throughput sequencing technologies to compare gene expression profiles of various embryo types during peri-attachment development. We expect that these data will provide important insight into the root causes of (and possible opportunities for mitigation of) suboptimal development of embryos derived from assisted reproductive technologies.
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Affiliation(s)
- S Clay Isom
- Animal Dairy & Veterinary Sciences Department, Utah State University, Logan, Utah, USA.
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13
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Scriptaid affects histone acetylation and the expression of development-related genes at different stages of porcine somatic cell nuclear transfer embryo during early development. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5827-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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14
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Oliveira CS, Saraiva NZ, Cruz MHC, Mazeti B, Oliveira LZ, Lopes FL, Garcia JM. HDAC inhibition decreases XIST expression on female IVP bovine blastocysts. Reproduction 2013; 145:9-17. [PMID: 23104973 DOI: 10.1530/rep-11-0343] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
During initial development, both X chromosomes are active in females, and one of them must be silenced at the appropriate time in order to dosage compensate their gene expression levels to male counterparts. Silencing involves epigenetic mechanisms, including histone deacetylation. Major X chromosome inactivation (XCI) in bovine occurs between hatching and implantation, although in vitro culture conditions might disrupt the silencing process, increasing or decreasing X-linked gene expression. In this study, we aimed to address the roles of histone deacetylase inhibition by trichostatin A (TSA) on female preimplantation development. We tested the hypothesis that by enhancing histone acetylation, TSA would increase the percentage of embryos achieving 16-cell stage, reducing percentage of embryos blocked at 8-cell stage, and interfere with XCI in IVF embryos. We noticed that after TSA treatment, acetylation levels in individual blastomeres of 8-16 cell embryos were increased twofold on treated embryos, and the same was detected for blastocysts. Changes among blastomere levels within the same embryo were diminished on TSA group, as low-acetylated blastomeres were no longer detected. The percentage of embryos that reached the 5th cleavage cycle 118 h after IVF, analyzed by Hoechst staining, remained unaltered after TSA treatment. Then, we assessed XIST and G6PD expression in individual female bovine blastocysts by quantitative real-time PCR. Even though G6PD expression remained unaltered after TSA exposure, XIST expression was eightfold decreased, and we also detected a major decrease in the percentage of blastocysts expressing detectable XIST levels after TSA treatment. Based on these results, we conclude that HDAC is involved on XCI process in bovine embryos, and its inhibition might delay X chromosome silencing and attenuate aberrant XIST expression described for IVF embryos.
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Affiliation(s)
- Clara Slade Oliveira
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Universidade Estadual Paulista, Jaboticabal, Brazil.
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15
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Wang LJ, Zhang H, Wang YS, Xu WB, Xiong XR, Li YY, Su JM, Hua S, Zhang Y. Scriptaid Improves In Vitro Development and Nuclear Reprogramming of Somatic Cell Nuclear Transfer Bovine Embryos. Cell Reprogram 2011; 13:431-9. [DOI: 10.1089/cell.2011.0024] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Li-Jun Wang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Hui Zhang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yong-Sheng Wang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Wen-Bing Xu
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Xian-Rong Xiong
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yan-Yan Li
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Jian-Min Su
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Song Hua
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
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Supplementation with the histone deacetylase inhibitor trichostatin A during in vitro culture of bovine embryos. ZYGOTE 2011; 21:59-63. [DOI: 10.1017/s0967199411000505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryTrichostatin A (TSA) is a histone deacetylase inhibitor that induces histone hyperacetylation and increases gene expression levels. The aim of the present study was to establish a suitable condition for the use of TSA in in vitro cultures of bovine embryos, and to determine whether TSA would increase blastocyst rates by improvement of chromatin remodelling during embryonic genome activation and by increasing the expression of crucial genes during early development. To test this hypothesis, 8-cell embryos were exposed to four concentrations of TSA for different periods of time to establish adequate protocols. In a second experiment, three experimental groups were selected for the evaluation of embryo quality based on the following parameters: apoptosis, total cell number and blastocyst hatching. TSA promoted embryonic arrest and degeneration at concentrations of 15, 25 and 50 nM. All treated groups presented lower blastocyst rates. Exposure of embryos to 5 nM for 144 h and to 15 nM for 48 h decreased blastocyst hatching. However, the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay (TUNEL) assay revealed similar apoptosis rates and total cell numbers in all groups studied. Although, in the present study, TSA treatment did not improve the parameters studied, the results provided background information on TSA supplementation during in vitro culture of bovine embryos and showed that embryo quality was apparently not affected, despite a decrease in blastocyst rate after exposure to TSA.
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Monteiro FM, Oliveira CS, Oliveira LZ, Saraiva NZ, Mercadante MEZ, Lopes FL, Arnold DR, Garcia JM. Chromatin modifying agents in the in vitro production of bovine embryos. Vet Med Int 2010; 2011. [PMID: 20936105 PMCID: PMC2948908 DOI: 10.4061/2011/694817] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 07/28/2010] [Accepted: 09/10/2010] [Indexed: 11/20/2022] Open
Abstract
The low efficiency observed in cloning by nuclear transfer is related to an aberrant gene expression following errors in epigenetic reprogramming. Recent studies have focused on further understanding of the modifications that take place in the chromatin of embryos during the preimplantation period, through the use of chromatin modifying agents. The goal of these studies is to identify the factors involved in nuclear reprogramming and to adjust in vitro manipulations in order to better mimic in vivo conditions. Therefore, proper knowledge of epigenetic reprogramming is necessary to prevent possible epigenetic errors and to improve efficiency and the use of in vitro fertilization and cloning technologies in cattle and other species.
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