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Verruma CG, Santos RS, Marchesi JAP, Sales SLA, Vila RA, Rios ÁFL, Furtado CLM, Ramos ES. Dynamic methylation pattern of H19DMR and KvDMR1 in bovine oocytes and preimplantation embryos. J Assist Reprod Genet 2024; 41:333-345. [PMID: 38231285 PMCID: PMC10894807 DOI: 10.1007/s10815-023-03011-7] [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: 08/09/2023] [Accepted: 12/19/2023] [Indexed: 01/18/2024] Open
Abstract
PURPOSE This study aimed to evaluate the epigenetic reprogramming of ICR1 (KvDMR1) and ICR2 (H19DMR) and expression of genes controlled by them as well as those involved in methylation, demethylation, and pluripotency. METHODS We collected germinal vesicle (GV) and metaphase II (MII) oocytes, and preimplantation embryos at five stages [zygote, 4-8 cells, 8-16 cells, morula, and expanded blastocysts (ExB)]. DNA methylation was assessed by BiSeq, and the gene expression was evaluated using qPCR. RESULTS H19DMR showed an increased DNA methylation from GV to MII oocytes (68.04% and 98.05%, respectively), decreasing in zygotes (85.83%) until morula (61.65%), and ExB (63.63%). H19 and IGF2 showed increased expression in zygotes, which decreased in further stages. KvDMR1 was hypermethylated in both GV (71.82%) and MII (69.43%) and in zygotes (73.70%) up to morula (77.84%), with a loss of methylation at the ExB (36.64%). The zygote had higher expression of most genes, except for CDKN1C and PHLDA2, which were highly expressed in MII and GV oocytes, respectively. DNMTs showed increased expression in oocytes, followed by a reduction in the earliest stages of embryo development. TET1 was downregulated until 4-8-cell and upregulated in 8-16-cell embryos. TET2 and TET3 showed higher expression in oocytes, and a downregulation in MII oocytes and 4-8-cell embryo. CONCLUSION We highlighted the heterogeneity in the DNA methylation of H19DMR and KvDMR1 and a dynamic expression pattern of genes controlled by them. The expression of DNMTs and TETs genes was also dynamic owing to epigenetic reprogramming.
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Affiliation(s)
- Carolina G Verruma
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Renan S Santos
- Postgraduate Program in Physiology and Pharmacology, Drug Research and Development Center (NPDM), Federal University of Ceara (UFC), Fortaleza, CE, 60430-275, Brazil
| | - Jorge A P Marchesi
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Sarah L A Sales
- Postgraduate Program in Physiology and Pharmacology, Drug Research and Development Center (NPDM), Federal University of Ceara (UFC), Fortaleza, CE, 60430-275, Brazil
| | - Reginaldo A Vila
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Álvaro F L Rios
- Biotechnology Laboratory, Center of Bioscience and Biotechnology, State University of North Fluminense Darcy Ribeiro, Goitacazes Campus, Rio de Janeiro, Brazil
| | - Cristiana L M Furtado
- Experimental Biology Center, Graduate Program in Medical Sciences, University of Fortaleza - UNIFOR, Fortaleza, CE, 60811-905, Brazil
- Drug Research and Development Center (NPDM), Postgraduate Program in Translational Medicine, Federal University of Ceara (UFC), Fortaleza, CE, 60430-275, Brazil
| | - Ester S Ramos
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil.
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Machado LS, Borges CM, de Lima MA, Sangalli JR, Therrien J, Pessôa LVDF, Fantinato Neto P, Perecin F, Smith LC, Meirelles FV, Bressan FF. Exogenous OCT4 and SOX2 Contribution to In Vitro Reprogramming in Cattle. Biomedicines 2023; 11:2577. [PMID: 37761017 PMCID: PMC10526180 DOI: 10.3390/biomedicines11092577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Mechanisms of cell reprogramming by pluripotency-related transcription factors or nuclear transfer seem to be mediated by similar pathways, and the study of the contribution of OCT4 and SOX2 in both processes may help elucidate the mechanisms responsible for pluripotency. Bovine fibroblasts expressing exogenous OCT4 or SOX2, or both, were analyzed regarding the expression of pluripotency factors and imprinted genes H19 and IGF2R, and used for in vitro reprogramming. The expression of the H19 gene was increased in the control sorted group, and putative iPSC-like cells were obtained when cells were not submitted to cell sorting. When sorted cells expressing OCT4, SOX2, or none (control) were used as donor cells for somatic cell nuclear transfer, fusion rates were 60.0% vs. 64.95% and 70.53% vs. 67.24% for SOX2 vs. control and OCT4 vs. control groups, respectively; cleavage rates were 66.66% vs. 81.68% and 86.47% vs. 85.18%, respectively; blastocyst rates were 33.05% vs. 44.15% and 52.06% vs. 44.78%, respectively. These results show that the production of embryos by NT resulted in similar rates of in vitro developmental competence compared to control cells regardless of different profiles of pluripotency-related gene expression presented by donor cells; however, induced reprogramming was compromised after cell sorting.
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Affiliation(s)
- Lucas Simões Machado
- Post-Graduate Program of Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 05508-270, SP, Brazil; (L.S.M.); (C.M.B.); (M.A.d.L.); (L.C.S.); (F.V.M.)
| | - Camila Martins Borges
- Post-Graduate Program of Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 05508-270, SP, Brazil; (L.S.M.); (C.M.B.); (M.A.d.L.); (L.C.S.); (F.V.M.)
| | - Marina Amaro de Lima
- Post-Graduate Program of Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 05508-270, SP, Brazil; (L.S.M.); (C.M.B.); (M.A.d.L.); (L.C.S.); (F.V.M.)
| | - Juliano Rodrigues Sangalli
- Department of Veterinary Medicine, Faculty of Animal Sciences and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (J.R.S.); (L.V.d.F.P.); (P.F.N.); (F.P.)
| | - Jacinthe Therrien
- Centre de Recherche en Reproduction et Fertilité, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC J2S 7C6, Canada;
| | - Laís Vicari de Figueiredo Pessôa
- Department of Veterinary Medicine, Faculty of Animal Sciences and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (J.R.S.); (L.V.d.F.P.); (P.F.N.); (F.P.)
| | - Paulo Fantinato Neto
- Department of Veterinary Medicine, Faculty of Animal Sciences and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (J.R.S.); (L.V.d.F.P.); (P.F.N.); (F.P.)
| | - Felipe Perecin
- Department of Veterinary Medicine, Faculty of Animal Sciences and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (J.R.S.); (L.V.d.F.P.); (P.F.N.); (F.P.)
| | - Lawrence Charles Smith
- Post-Graduate Program of Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 05508-270, SP, Brazil; (L.S.M.); (C.M.B.); (M.A.d.L.); (L.C.S.); (F.V.M.)
- Centre de Recherche en Reproduction et Fertilité, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC J2S 7C6, Canada;
| | - Flavio Vieira Meirelles
- Post-Graduate Program of Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 05508-270, SP, Brazil; (L.S.M.); (C.M.B.); (M.A.d.L.); (L.C.S.); (F.V.M.)
- Department of Veterinary Medicine, Faculty of Animal Sciences and Food Engineering, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (J.R.S.); (L.V.d.F.P.); (P.F.N.); (F.P.)
| | - Fabiana Fernandes Bressan
- Post-Graduate Program of Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo 05508-270, SP, Brazil; (L.S.M.); (C.M.B.); (M.A.d.L.); (L.C.S.); (F.V.M.)
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Mangiavacchi PM, Caldas-Bussiere MC, Mendonça MDS, Rumpf R, Lemos Júnior PES, Alves CS, Carneiro WDS, Dias AJB, Rios ÁFL. Multi-locus DNA methylation analysis of imprinted genes in cattle from somatic cell nuclear transfer. Theriogenology 2022; 186:95-107. [DOI: 10.1016/j.theriogenology.2022.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 10/18/2022]
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Poirier M, Smith OE, Therrien J, Rigoglio NN, Miglino MA, Silva LA, Meirelles FV, Smith LC. Resiliency of equid H19 imprint to somatic cell reprogramming by oocyte nuclear transfer and genetically induced pluripotency†. Biol Reprod 2021; 102:211-219. [PMID: 31504208 DOI: 10.1093/biolre/ioz168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/31/2019] [Accepted: 08/20/2019] [Indexed: 01/17/2023] Open
Abstract
Cell reprogramming by somatic cell nuclear transfer and in induced pluripotent stem cells is associated with epigenetic modifications that are often incompatible with embryonic development and differentiation. For instance, aberrant DNA methylation patterns of the differentially methylated region and biallelic expression of H19-/IGF2-imprinted gene locus have been associated with abnormal growth of fetuses and placenta in several mammalian species. However, cloned horses are born with normal sizes and with no apparent placental anomalies, suggesting that H19/IGF2 imprinting may be epigenetically stable after reprogramming in this species. In light of this, we aimed at characterizing the equid H19 gene to determine whether imprinting is altered in somatic cell nuclear transfer (SCNT)-derived conceptuses and induced pluripotent stem cell (iPSC) lines using the mule hybrid model. A CpG-rich region containing five CTCF binding sites was identified upstream of the equine H19 gene and analyzed by bisulfite sequencing. Coupled with parent-specific and global H19 transcript analysis, we found that the imprinted H19 remains monoallelic and that on average the methylation levels of both parental differentially methylated regions in embryonic and extra-embryonic SCNT tissues and iPSC lines remained unaltered after reprogramming. Together, these results show that, compared to other species, equid somatic cells are more resilient to epigenetic alterations to the H19-imprinted locus during SCNT and iPSC reprogramming.
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Affiliation(s)
- Mikhael Poirier
- Centre de Recherche en Reproduction et Fértilité, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - Olivia Eilers Smith
- Centre de Recherche en Reproduction et Fértilité, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - Jacinthe Therrien
- Centre de Recherche en Reproduction et Fértilité, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
| | - Nathia Nathaly Rigoglio
- Centre de Recherche en Reproduction et Fértilité, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada.,Department of Surgery, School of Veterinary Medicine and Animal Science, University of Sao Paulo, São Paulo, SP, Brazil
| | - Maria Angélica Miglino
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of Sao Paulo, São Paulo, SP, Brazil
| | - Luciano Andrade Silva
- Department of Veterinary, School of Animal and Food Sciences, University of São Paulo, Pirassununga, SP, Brazil
| | - Flavio Vieira Meirelles
- Department of Veterinary, School of Animal and Food Sciences, University of São Paulo, Pirassununga, SP, Brazil
| | - Lawrence Charles Smith
- Centre de Recherche en Reproduction et Fértilité, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
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Abstract
Embryonic stem cells (ESCs) and induced pluripotent stem cells have the potential to differentiate to all cell types of an adult individual and are useful for studying development and for translational research. However, extrapolation of mouse and human ESC knowledge to deriving stable ESC lines of domestic ungulates and large livestock species has been challenging. In contrast to ESCs that are usually established from the blastocyst, mouse expanded potential stem cells (EPSCs) are derived from four-cell and eight-cell embryos. We have recently used the EPSC approach and established stem cells from porcine and human preimplantation embryos. EPSCs are molecularly similar across species and have broader developmental potential to generate embryonic and extraembryonic cell lineages. We further explore the EPSC technology for mammalian species refractory to the standard ESC approaches and report here the successful establishment of bovine EPSCs (bEPSCs) from preimplantation embryos of both wild-type and somatic cell nuclear transfer. bEPSCs express high levels of pluripotency genes, propagate robustly in feeder-free culture, and are genetically stable in long-term culture. bEPSCs have enriched transcriptomic features of early preimplantation embryos and differentiate in vitro to cells of the three somatic germ layers and, in chimeras, contribute to both the embryonic (fetal) and extraembryonic cell lineages. Importantly, precise gene editing is efficiently achieved in bEPSCs, and genetically modified bEPSCs can be used as donors in somatic cell nuclear transfer. bEPSCs therefore hold the potential to substantially advance biotechnology and agriculture.
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Folic acid supplementation during oocytes maturation influences in vitro production and gene expression of bovine embryos. ZYGOTE 2021; 29:342-349. [PMID: 33685547 DOI: 10.1017/s0967199421000022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Embryos that are produced in vitro frequently present epigenetic modifications. However, maternal supplementation with folic acid (FA) may improve oocyte maturation and embryo development, preventing epigenetic errors in the offspring. We sought to evaluate the influence of FA supplementation during in vitro maturation of grade I (GI) and grade III (GIII) bovine oocytes on embryo production rate and the expression of IGF2 and KCNQ1OT1 genes. The oocytes were matured in vitro with different concentrations of FA (0, 10, 30 and 100 μM), followed by in vitro fertilization and embryo culture. On the seventh day (D7) of culture, embryo production was evaluated and gene expression was measured using real-time qPCR. Supplementation with 10 μM of FA did not affect embryo production for GI and GIII oocytes. Moderate supplementation (30 μM) seemed to be a positive influence, increasing embryo production for GIII (P = 0.012), while the highest dose (100 μM) reduced embryo production (P = 0.010) for GI, and IGF2 expression was not detected. In GIII, only embryos whose oocyte maturation was not supplemented with FA demonstrated detected IGF2 expression. The lowest concentration of FA (10 μM) reduced KCNQ1OT1 expression (P = 0.05) on embryos from GIII oocytes. Different FA concentrations induced different effects on bovine embryo production and gene expression that was related to oocyte quality. Despite the epigenetic effects of FA, supplementation seems to be a promising factor to improve bovine embryo production if used carefully, as concentration is an important factor, especially in oocytes with impaired quality.
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Sampaio RV, Sangalli JR, De Bem THC, Ambrizi DR, Del Collado M, Bridi A, de Ávila ACFCM, Macabelli CH, de Jesus Oliveira L, da Silveira JC, Chiaratti MR, Perecin F, Bressan FF, Smith LC, Ross PJ, Meirelles FV. Catalytic inhibition of H3K9me2 writers disturbs epigenetic marks during bovine nuclear reprogramming. Sci Rep 2020; 10:11493. [PMID: 32661262 PMCID: PMC7359371 DOI: 10.1038/s41598-020-67733-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 04/28/2020] [Indexed: 01/28/2023] Open
Abstract
Orchestrated events, including extensive changes in epigenetic marks, allow a somatic nucleus to become totipotent after transfer into an oocyte, a process termed nuclear reprogramming. Recently, several strategies have been applied in order to improve reprogramming efficiency, mainly focused on removing repressive epigenetic marks such as histone methylation from the somatic nucleus. Herein we used the specific and non-toxic chemical probe UNC0638 to inhibit the catalytic activity of the histone methyltransferases EHMT1 and EHMT2. Either the donor cell (before reconstruction) or the early embryo was exposed to the probe to assess its effect on developmental rates and epigenetic marks. First, we showed that the treatment of bovine fibroblasts with UNC0638 did mitigate the levels of H3K9me2. Moreover, H3K9me2 levels were decreased in cloned embryos regardless of treating either donor cells or early embryos with UNC0638. Additional epigenetic marks such as H3K9me3, 5mC, and 5hmC were also affected by the UNC0638 treatment. Therefore, the use of UNC0638 did diminish the levels of H3K9me2 and H3K9me3 in SCNT-derived blastocysts, but this was unable to improve their preimplantation development. These results indicate that the specific reduction of H3K9me2 by inhibiting EHMT1/2 during nuclear reprogramming impacts the levels of H3K9me3, 5mC, and 5hmC in preimplantation bovine embryos.
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Affiliation(s)
- Rafael Vilar Sampaio
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil.
- Centre de Recherche en Reproduction et Fértilité, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, Canada.
- Department of Animal Science, University of California Davis, Davis, USA.
| | - Juliano Rodrigues Sangalli
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
- Department of Animal Science, University of California Davis, Davis, USA
| | - Tiago Henrique Camara De Bem
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Dewison Ricardo Ambrizi
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Maite Del Collado
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Alessandra Bridi
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | | | | | - Lilian de Jesus Oliveira
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Juliano Coelho da Silveira
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | | | - Felipe Perecin
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Fabiana Fernandes Bressan
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Lawrence Charles Smith
- Centre de Recherche en Reproduction et Fértilité, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, Canada
| | - Pablo J Ross
- Department of Animal Science, University of California Davis, Davis, USA
| | - Flávio Vieira Meirelles
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil.
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8
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Yang M, Perisse I, Fan Z, Regouski M, Meyer-Ficca M, Polejaeva IA. Increased pregnancy losses following serial somatic cell nuclear transfer in goats. Reprod Fertil Dev 2019; 30:1443-1453. [PMID: 29769162 DOI: 10.1071/rd17323] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 04/09/2018] [Indexed: 12/26/2022] Open
Abstract
Serial cloning by somatic cell nuclear transfer (SCNT) is a critical tool for the expansion of precious transgenic lines or resetting the lifespan of primary transgenic cells for multiple genetic modifications. We successfully produced second-generation cloned goats using donor neonatal fibroblasts from first-generation clones. However, our attempts to produce any third-generation clones failed. SCNT efficiency decreased progressively with the clonal generations. The rate of pregnancy loss was significantly greater in recloning groups (P<0.05). While no pregnancy loss was observed during the first round of SCNT, 14 out of 21 pregnancies aborted in the second round of SCNT and all pregnancies aborted in the third round of SCNT. In this retrospective study, we also investigated the expression of 21 developmentally important genes in muscle tissue of cloned (G1) and recloned (G2) offspring. The expression of most of these genes in live clones was found to be largely comparable to naturally reproduced control goats, but fibroblast growth factor 10 (FGF10), methyl CpG binding protein 2 (MECP2) and growth factor receptor bound protein 10 (GRB10) were differentially expressed (P<0.05) in G2 goats compared with G1 and controls. To study the effects of serial cloning on DNA methylation, the methylation pattern of differentially methylated regions in imprinted genes H19 and insulin like growth factor 2 receptor (IGF2R) were also analysed. Aberrant H19 DNA methylation patterns were detected in G1 and G2 clones.
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Affiliation(s)
- Min Yang
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322-4815, USA
| | - Iuri Perisse
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322-4815, USA
| | - Zhiqiang Fan
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322-4815, USA
| | - Misha Regouski
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322-4815, USA
| | - Mirella Meyer-Ficca
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322-4815, USA
| | - Irina A Polejaeva
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT 84322-4815, USA
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Yamanaka KI, Yamashita K, Khatun H, Wada Y, Tatemoto H, Sakatani M, Takenouchi N, Takahashi M, Watanabe S. Normal DNA methylation status in sperm from a somatic cell cloned bull and their fertilized embryos. Anim Sci J 2018; 89:1406-1414. [DOI: 10.1111/asj.13086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/26/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Ken-Ichi Yamanaka
- Faculty of Agriculture; Saga University; Saga Japan
- The United Graduate School of Agricultural Sciences; Kagoshima University; Kagoshima Japan
| | | | - Hafiza Khatun
- Faculty of Agriculture; Saga University; Saga Japan
- The United Graduate School of Agricultural Sciences; Kagoshima University; Kagoshima Japan
| | - Yasuhiko Wada
- Faculty of Agriculture; Saga University; Saga Japan
- The United Graduate School of Agricultural Sciences; Kagoshima University; Kagoshima Japan
| | - Hideki Tatemoto
- The United Graduate School of Agricultural Sciences; Kagoshima University; Kagoshima Japan
- Faculty of Agriculture; University of Ryukyus; Okinawa Japan
| | - Miki Sakatani
- Kyushu Okinawa Agricultural Research Center; NARO; Kosi Japan
| | | | | | - Shinya Watanabe
- Institute of Livestock and Grassland Science; NARO; Tsukuba Japan
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Ruan Z, Zhao X, Qin X, Luo C, Liu X, Deng Y, Zhu P, Li Z, Huang B, Shi D, Lu F. DNA methylation and expression of imprinted genes are associated with the viability of different sexual cloned buffaloes. Reprod Domest Anim 2017; 53:203-212. [PMID: 29076549 DOI: 10.1111/rda.13093] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/07/2017] [Indexed: 01/09/2023]
Abstract
The DNA methylation of imprinted genes is an important way to regulate epigenetic reprogramming of donor cells in somatic cell nuclear transfer (SCNT). However, the effects of sexual distinction on the DNA methylation of imprinted genes in cloned animals have seldom been reported. In this study, we analysed the DNA methylation status of three imprinted genes (Xist, IGF2 and H19) from liveborn cloned buffaloes (L group, three female and three male), stillborn cloned buffaloes (S group, three female and three male) and natural reproduction buffaloes (N group, three female and three male), using bisulphite sequencing polymerase chain reaction (BS-PCR). The expression levels of these imprinted genes were also investigated by quantitative real-time PCR (QRT-PCR). The DNA methylation levels of H19 were not significantly different among the groups. However, the Xist in female and IGF2 in male of the S group were found to be significantly hypomethylated in comparison with the same sexual buffaloes in L group and N group (p < .05). Furthermore, the expression levels of Xist, IGF2 and H19 in the stillborn female cloned buffaloes of S group were significantly higher than that of the female buffaloes in the L group and N group (p < .05). The expression levels of IGF2 and H19 in the stillborn male cloned buffaloes in the S group were significantly higher than that of the male buffaloes in the L group and N group (p < .05). These results indicate that Xist may be associated with the viability of female cloned buffaloes, and IGF2 may also be related to the viability of male cloned buffaloes.
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Affiliation(s)
- Z Ruan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - X Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - X Qin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - C Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - X Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Y Deng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - P Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Z Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - B Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - D Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - F Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China.,Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
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11
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Song X, Li F, Jiang Z, Sun Y, Li H, Gao S, Zhang L, Xue B, Zhao G, Li J, Liu Z, He H, Huan Y. Imprinting disorder in donor cells is detrimental to the development of cloned embryos in pigs. Oncotarget 2017; 8:72363-72374. [PMID: 29069793 PMCID: PMC5641136 DOI: 10.18632/oncotarget.20390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 08/06/2017] [Indexed: 02/06/2023] Open
Abstract
Imprinting disorder during somatic cell nuclear transfer usually leads to the abnormality of cloned animals and low cloning efficiency. However, little is known about the role of donor cell imprinting in the development of cloned embryos. Here, we demonstrated that the imprinting (H19/Igf2) in porcine fetus fibroblasts derived from the morphologically abnormal cloned fetuses (the abnormal imprinting group) was more hypomethylated, and accordingly, significantly higher H19 transcription and lower Igf2 expression occurred in comparison with those in fibroblasts derived from morphologically normal cloned fetuses (the normal imprinting group) or donor fetus fibroblasts (the control group). When these fibroblasts were used as donor cells, the abnormal imprinting group displayed an even lower imprinting methylation level, in correspondence to the significantly downregulated expression of Dnmt1, Dnmt3a and Zfp57, and a markedly reduced blastocyst rate, while the normal imprinting group took on the similar patterns of imprinting, gene expression and embryo development to the control group. When 5-aza-dC was applied to reduce the fibroblasts imprinting methylation level in the normal imprinting group, cloned embryos displayed the more severely impaired imprinting and significantly lower blastocyst rate. While the upregulated H19 transcription in the abnormal imprinting group was knocked down, the imprinting statuses were partly rescued, and the cleavage and blastocyst rates significantly increased in cloned embryos. In all, donor cell imprinting disorder reduced the developmental efficiency of cloned embryos. This work provides a new insight into understanding the molecular mechanism of donor cells regulating the cloned embryo development.
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Affiliation(s)
- Xuexiong Song
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Fangzheng Li
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Zhongling Jiang
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Yueping Sun
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Huatao Li
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Shansong Gao
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Liping Zhang
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Binghua Xue
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Guimin Zhao
- College of Life Science, Shandong Normal University, Jinan, Shandong Province, China
| | - Jingyu Li
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Zhonghua Liu
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Hongbin He
- College of Life Science, Shandong Normal University, Jinan, Shandong Province, China
| | - Yanjun Huan
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong Province, China
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12
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Kaneda M, Watanabe S, Akagi S, Inaba Y, Geshi M, Nagai T. Proper reprogramming of imprinted and non-imprinted genes in cloned cattle gametogenesis. Anim Sci J 2017; 88:1678-1685. [PMID: 28574624 DOI: 10.1111/asj.12846] [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: 02/24/2017] [Accepted: 04/05/2017] [Indexed: 12/18/2022]
Abstract
Epigenetic abnormalities in cloned animals are caused by incomplete reprogramming of the donor nucleus during the nuclear transfer step (first reprogramming). However, during the second reprogramming step that occurs only in the germline cells, epigenetic errors not corrected during the first step are repaired. Consequently, epigenetic abnormalities in the somatic cells of cloned animals should be erased in their spermatozoa or oocytes. This is supported by the fact that offspring from cloned animals do not exhibit defects at birth or during postnatal development. To test this hypothesis in cloned cattle, we compared the DNA methylation level of two imprinted genes (H19 and PEG3) and three non-imprinted genes (XIST, OCT4 and NANOG) and two repetitive elements (Satellite I and Satellite II) in blood and sperm DNAs from cloned and non-cloned bulls. We found no differences between cloned and non-cloned bulls. We also analyzed the DNA methylation levels of four repetitive elements (Satellite I, Satellite II, Alpha-satellite and Art2) in oocytes recovered from cloned and non-cloned cows. Again, no significant differences were observed between clones and non-clones. These results suggested that imprinted and non-imprinted genes and repetitive elements were properly reprogramed during gametogenesis in cloned cattle; therefore, they contributed to the soundness of cloned cattle offspring.
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Affiliation(s)
- Masahiro Kaneda
- Division of Animal Life Science, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Shinya Watanabe
- Institute of Livestock and Grassland Science, NARO, Tsukuba, Japan
| | - Satoshi Akagi
- Institute of Livestock and Grassland Science, NARO, Tsukuba, Japan
| | - Yasushi Inaba
- National Livestock Breeding Center Tottori Station, Tottori, Japan
| | - Masaya Geshi
- Institute of Agrobiological Sciences, NARO, Tsukuba, Japan
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13
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Aberrant DNA methylation reprogramming in bovine SCNT preimplantation embryos. Sci Rep 2016; 6:30345. [PMID: 27456302 PMCID: PMC4960566 DOI: 10.1038/srep30345] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 07/04/2016] [Indexed: 11/09/2022] Open
Abstract
DNA methylation reprogramming plays important roles in mammalian embryogenesis. Mammalian somatic cell nuclear transfer (SCNT) embryos with reprogramming defects fail to develop. Thus, we compared DNA methylation reprogramming in preimplantation embryos from bovine SCNT and in vitro fertilization (IVF) and analyzed the influence of vitamin C (VC) on the reprogramming of DNA methylation. The results showed that global DNA methylation followed a typical pattern of demethylation and remethylation in IVF preimplantation embryos; however, the global genome remained hypermethylated in SCNT preimplantation embryos. Compared with the IVF group, locus DNA methylation reprogramming showed three patterns in the SCNT group. First, some pluripotency genes (POU5F1 and NANOG) and repeated elements (satellite I and α-satellite) showed insufficient demethylation and hypermethylation in the SCNT group. Second, a differentially methylated region (DMR) of an imprint control region (ICR) in H19 exhibited excessive demethylation and hypomethylation. Third, some pluripotency genes (CDX2 and SOX2) were hypomethylated in both the IVF and SCNT groups. Additionally, VC improved the DNA methylation reprogramming of satellite I, α-satellite and H19 but not that of POU5F1 and NANOG in SCNT preimplantation embryos. These results indicate that DNA methylation reprogramming was aberrant and that VC influenced DNA methylation reprogramming in SCNT embryos in a locus-specific manner.
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14
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Niemann H. Epigenetic reprogramming in mammalian species after SCNT-based cloning. Theriogenology 2016; 86:80-90. [PMID: 27160443 DOI: 10.1016/j.theriogenology.2016.04.021] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/23/2016] [Accepted: 03/14/2016] [Indexed: 12/16/2022]
Abstract
The birth of "Dolly," the first mammal cloned from an adult mammary epithelial cell, abolished the decades-old scientific dogma implying that a terminally differentiated cell cannot be reprogrammed into a pluripotent embryonic state. The most dramatic epigenetic reprogramming occurs in SCNT when the expression profile of a differentiated cell is abolished and a new embryo-specific expression profile, involving 10,000 to 12,000 genes, and thus, most genes of the entire genome is established, which drives embryonic and fetal development. The initial release from somatic cell epigenetic constraints is followed by establishment of post-zygotic expression patterns, X-chromosome inactivation, and adjustment of telomere length. Somatic cell nuclear transfer may be associated with a variety of pathologic changes of the fetal and placental phenotype in a proportion of cloned offspring, specifically in ruminants, that are thought to be caused by aberrant epigenetic reprogramming. Improvements in our understanding of this dramatic epigenetic reprogramming event will be instrumental in realizing the great potential of SCNT for basic research and for important agricultural and biomedical applications. Here, current knowledge on epigenetic reprogramming after use of SCNT in livestock is reviewed, with emphasis on gene-specific and global DNA methylation, imprinting, X-chromosome inactivation, and telomere length restoration in early development.
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Affiliation(s)
- Heiner Niemann
- Institute of Farm Animal Genetics (FLI), Mariensee, Neustadt, Germany.
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15
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Transcriptomic Features of Bovine Blastocysts Derived by Somatic Cell Nuclear Transfer. G3-GENES GENOMES GENETICS 2015; 5:2527-38. [PMID: 26342001 PMCID: PMC4683625 DOI: 10.1534/g3.115.020016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reprogramming incompletely occurs in most somatic cell nuclear transfer (SCNT) embryos, which results in misregulation of developmentally important genes and subsequent embryonic malfunction and lethality. Here we examined transcriptome profiles in single bovine blastocysts derived by in vitro fertilization (IVF) and SCNT. Different types of donor cells, cumulus cell and ear-skin fibroblast, were used to derive cSCNT and fSCNT blastocysts, respectively. SCNT blastocysts expressed 13,606 genes on average, similar to IVF (13,542). Correlation analysis found that both cSCNT and fSCNT blastocyst groups had transcriptomic features distinctive from the IVF group, with the cSCNT transcriptomes closer to the IVF ones than the fSCNT. Gene expression analysis identified 56 underrepresented and 78 overrepresented differentially expressed genes in both SCNT groups. A 400-kb locus harboring zinc-finger protein family genes in chromosome 18 were found coordinately down-regulated in fSCNT blastocysts, showing a feature of reprogramming-resistant regions. Probing into different categories of genes important for blastocyst development revealed that genes involved in trophectoderm development frequently were underrepresented, and those encoding epigenetic modifiers tended to be overrepresented in SCNT blastocysts. Our effort to identify reprogramming-resistant, differentially expressed genes can help map reprogramming error-prone loci onto the genome and elucidate how to handle the stochastic events of reprogramming to improve cloning efficiency.
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16
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Li R, Wu H, Zhuo WW, Mao QF, Lan H, Zhang Y, Hua S. Astaxanthin Normalizes Epigenetic Modifications of Bovine Somatic Cell Cloned Embryos and Decreases the Generation of Lipid Peroxidation. Reprod Domest Anim 2015; 50:793-9. [DOI: 10.1111/rda.12589] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 07/11/2015] [Indexed: 01/26/2023]
Affiliation(s)
- R Li
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi Province China
| | - H Wu
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi Province China
| | - WW Zhuo
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi Province China
| | - QF Mao
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi Province China
| | - H Lan
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi Province China
| | - Y Zhang
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi Province China
| | - S Hua
- College of Veterinary Medicine; Northwest A&F University; Yangling Shaanxi Province China
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17
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Wang D, Yuan L, Sui T, Song Y, Lv Q, Wang A, Li Z, Lai L. Faithful expression of imprinted genes in donor cells of SCNT cloned pigs. FEBS Lett 2015; 589:2066-72. [PMID: 26119041 DOI: 10.1016/j.febslet.2015.06.016] [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] [Received: 04/29/2015] [Revised: 05/25/2015] [Accepted: 06/08/2015] [Indexed: 12/28/2022]
Abstract
To understand if the genomic imprinting status of the donor cells is altered during the process of SCNT (somatic cell nuclear transfer), cloned pigs were produced by SCNT using PEF (porcine embryonic fibroblast) and P-PEF (parthenogenetic-PEF) cells as donors. Then, the gene expression and methylation patterns of H19, IGF2, NNAT and MEST were compared between PEF vs. C-PEF (cloned-PEF), P-PEF vs. CP-PEF (cloned-P-PEF), respectively. Taken together, the results revealed that there was no significant difference in the expression of imprinted genes and conserved genomic imprints between the donor and cloned cells.
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Affiliation(s)
- Dongxu Wang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China
| | - Lin Yuan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China
| | - Tingting Sui
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China
| | - Yuning Song
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China
| | - Qingyan Lv
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China
| | - Anfeng Wang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China
| | - Zhanjun Li
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China.
| | - Liangxue Lai
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, China; Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.
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18
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Liu Y, Ostrup O, Li R, Li J, Vajta G, Kragh PM, Schmidt M, Purup S, Hyttel P, Klærke D, Callesen H. Long-term effect on in vitro cloning efficiency after treatment of somatic cells with Xenopus egg extract in the pig. Reprod Fertil Dev 2015; 26:1017-31. [PMID: 25145414 DOI: 10.1071/rd13147] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Accepted: 07/02/2013] [Indexed: 11/23/2022] Open
Abstract
In somatic cell nuclear transfer (SCNT), donor cell reprogramming is considered as a biologically important and vulnerable event. Various donor cell pre-treatments with Xenopus egg extracts can promote reprogramming. Here we investigated if the reprogramming effect of one treatment with Xenopus egg extract on donor cells was maintained for several cell passages. The extract treatment resulted in increased cell-colony formation from early passages in treated porcine fibroblasts (ExTES), and increased development of cloned embryos. Partial dedifferentiation was observed in ExTES cells, shown as a tendency towards upregulation of NANOG, c-MYC and KLF-4 and downregulation of DESMIM compared with ExTES at Passage 2. Compared with our routine SCNT, continuously increased development of cloned embryos was observed in the ExTES group, and ExTES cloned blastocysts displayed hypermethylated DNA patterns and hypermethylation of H3K4me3 and H3K27me3 in ICM compared with TE. All seven recipients became pregnant after transferral of ExTES cloned embryos and gave birth to 7-22 piglets per litter (average 12). In conclusion, our results demonstrate that one treatment of porcine fibroblasts with Xenopus egg extract can result in long-term increased ability of the cells to promote their in vitro function in subsequent SCNT. Finally these cells can also result in successful development of cloned embryos to term.
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Affiliation(s)
- Ying Liu
- Department of Animal Science, Aarhus University, DK-8830 Tjele, Denmark
| | - Olga Ostrup
- Department of Veterinary Clinical and Animal Sciences, University of Copenhagen, DK-1870 Frederiksberg C, Denmark
| | - Rong Li
- Department of Animal Science, Aarhus University, DK-8830 Tjele, Denmark
| | - Juan Li
- Department of Animal Science, Aarhus University, DK-8830 Tjele, Denmark
| | - Gábor Vajta
- Department of Animal Science, Aarhus University, DK-8830 Tjele, Denmark
| | - Peter M Kragh
- Department of Animal Science, Aarhus University, DK-8830 Tjele, Denmark
| | - Mette Schmidt
- Department of Veterinary Reproduction and Obstetrics, University of Copenhagen, DK-1870 Frederiksberg C, Denmark
| | - Stig Purup
- Department of Animal Science, Aarhus University, DK-8830 Tjele, Denmark
| | - Poul Hyttel
- Department of Veterinary Clinical and Animal Sciences, University of Copenhagen, DK-1870 Frederiksberg C, Denmark
| | - Dan Klærke
- Department of Veterinary Clinical and Animal Sciences, University of Copenhagen, DK-1870 Frederiksberg C, Denmark
| | - Henrik Callesen
- Department of Animal Science, Aarhus University, DK-8830 Tjele, Denmark
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19
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Huan Y, Zhu J, Huang B, Mu Y, Kong Q, Liu Z. Trichostatin A rescues the disrupted imprinting induced by somatic cell nuclear transfer in pigs. PLoS One 2015; 10:e0126607. [PMID: 25962071 PMCID: PMC4427324 DOI: 10.1371/journal.pone.0126607] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/06/2015] [Indexed: 11/25/2022] Open
Abstract
Imprinting disorders induced by somatic cell nuclear transfer (SCNT) usually lead to the abnormalities of cloned animals and low cloning efficiency. Histone deacetylase inhibitors have been shown to improve gene expression, genomic methylation reprogramming and the development of cloned embryos, however, the imprinting statuses in these treated embryos and during their subsequent development remain poorly studied. In this study, we investigated the dynamics of H19/Igf2 methylation and transcription in porcine cloned embryos treated with trichostatin A (TSA), and examined H19/Igf2 imprinting patterns in cloned fetuses and piglets. Our results showed that compared with the maintenance of H19/Igf2 methylation in fertilized embryos, cloned embryos displayed aberrant H19/Igf2 methylation and lower H19/Igf2 transcripts. When TSA enhanced the development of cloned embryos, the disrupted H19/Igf2 imprinting was largely rescued in these treated embryos, more similar to those detected in fertilized counterparts. Further studies displayed that TSA effectively rescued the disrupted imprinting of H19/Igf2 in cloned fetuses and piglets, prevented the occurrence of cloned fetus and piglet abnormalities, and enhanced the full-term development of cloned embryos. In conclusion, our results demonstrated that aberrant imprinting induced by SCNT led to the abnormalities of cloned fetuses and piglets and low cloning efficiency, and TSA rescued the disrupted imprinting in cloned embryos, fetuses and piglets, and prevented the occurrence of cloned fetus and piglet abnormalities, thereby improving the development of cloned embryos. This study would have important implications in improving cloning efficiency and the health of cloned animals.
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Affiliation(s)
- Yanjun Huan
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong Province, China
| | - Jiang Zhu
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Bo Huang
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Yanshuang Mu
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Qingran Kong
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Zhonghua Liu
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
- * E-mail:
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20
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Smith LC, Therrien J, Filion F, Bressan F, Meirelles FV. Epigenetic consequences of artificial reproductive technologies to the bovine imprinted genes SNRPN, H19/IGF2, and IGF2R. Front Genet 2015; 6:58. [PMID: 25763013 PMCID: PMC4340261 DOI: 10.3389/fgene.2015.00058] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 02/07/2015] [Indexed: 12/28/2022] Open
Abstract
Animal breeders have made widespread use of assisted reproductive technologies to accelerate genetic improvement programs aimed at obtaining more, better and cheaper food products. Selection approaches have traditionally focused on Mendel’s laws of inheritance using parental phenotypic characteristics and quantitative genetics approaches to choose the best parents for the next generation, regardless of their gender. However, apart from contributing DNA sequence variants, male and female gametes carry parental-specific epigenetic marks that play key roles during pre- and post-natal development and growth of the offspring. We herein review the epigenetic anomalies that are associated with artificial reproductive technologies in current use in animal breeding programs. For instance, we demonstrate that bovine embryos and fetuses derived by in vitro culture and somatic cell nuclear transfer show epigenetic anomalies in the differentially methylated regions controlling the expression of some imprinted genes. Although these genomic imprinting errors are undetected in the somatic tissues after birth, further research is warranted to examine potential germ cell transmission of epimutations and the potential risks of reproducing cattle using artificial reproductive technologies.
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Affiliation(s)
- Lawrence C Smith
- Department of Veterinary Biomedicine, Centre de Recherche en Reproduction Animale, Faculty of Veterinary Medicine, University of Montreal , Saint-Hyacinthe, QC, Canada
| | - Jacinthe Therrien
- Department of Veterinary Biomedicine, Centre de Recherche en Reproduction Animale, Faculty of Veterinary Medicine, University of Montreal , Saint-Hyacinthe, QC, Canada
| | - France Filion
- Department of Veterinary Biomedicine, Centre de Recherche en Reproduction Animale, Faculty of Veterinary Medicine, University of Montreal , Saint-Hyacinthe, QC, Canada
| | - Fabiana Bressan
- Department of Veterinary Medicine, Faculty of Animal Sciences and Food Engineering, University of São Paulo, Pirassununga , Brazil
| | - Flávio V Meirelles
- Department of Veterinary Medicine, Faculty of Animal Sciences and Food Engineering, University of São Paulo, Pirassununga , Brazil
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21
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Jang H, Jang WG, Kim EJ, Do M, Oh KB, Hwang S, Shim H, Choo YK, Kwon DJ, Lee JW. Methylation and expression changes in imprinted genesH19andIgf2during serial somatic cell nuclear transfer using piglet fibroblasts. Anim Cells Syst (Seoul) 2015. [DOI: 10.1080/19768354.2014.995706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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22
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H19 and MEST gene expression and histone modification in blastocysts cultured from vitrified and fresh two-cell mouse embryos. Reprod Biomed Online 2014; 29:559-66. [DOI: 10.1016/j.rbmo.2014.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 06/23/2014] [Accepted: 07/01/2014] [Indexed: 12/28/2022]
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23
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Franco MM, Prickett AR, Oakey RJ. The role of CCCTC-binding factor (CTCF) in genomic imprinting, development, and reproduction. Biol Reprod 2014; 91:125. [PMID: 25297545 DOI: 10.1095/biolreprod.114.122945] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
CCCTC-binding factor (CTCF) is the major protein involved in insulator activity in vertebrates, with widespread DNA binding sites in the genome. CTCF participates in many processes related to global chromatin organization and remodeling, contributing to the repression or activation of gene transcription. It is also involved in epigenetic reprogramming and is essential during gametogenesis and embryo development. Abnormal DNA methylation patterns at CTCF motifs may impair CTCF binding to DNA, and are related to fertility disorders in mammals. Therefore, CTCF and its binding sites are important candidate regions to be investigated as molecular markers for gamete and embryo quality. This article reviews the role of CTCF in genomic imprinting, gametogenesis, and early embryo development and, moreover, highlights potential opportunities for environmental influences associated with assisted reproductive techniques (ARTs) to affect CTCF-mediated processes. We discuss the potential use of CTCF as a molecular marker for assessing gamete and embryo quality in the context of improving the efficiency and safety of ARTs.
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Affiliation(s)
- Maurício M Franco
- Embrapa Genetic Resources & Biotechnology, Laboratory of Animal Reproduction, Parque Estação Biológica, Brasília, Brazil
| | - Adam R Prickett
- Department of Medical & Molecular Genetics, King's College London, Guy's Hospital, London, United Kingdom
| | - Rebecca J Oakey
- Department of Medical & Molecular Genetics, King's College London, Guy's Hospital, London, United Kingdom
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24
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Meirelles FV, Bressan FF, Smith LC, Perecin F, Chiaratti MR, Ferraz JBS. Cytoplasmatic inheritance, epigenetics and reprogramming DNA as tools in animal breeding. Livest Sci 2014. [DOI: 10.1016/j.livsci.2014.05.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Sangalli JR, Chiaratti MR, De Bem THC, de Araújo RR, Bressan FF, Sampaio RV, Perecin F, Smith LC, King WA, Meirelles FV. Development to term of cloned cattle derived from donor cells treated with valproic acid. PLoS One 2014; 9:e101022. [PMID: 24959750 PMCID: PMC4069182 DOI: 10.1371/journal.pone.0101022] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/02/2014] [Indexed: 11/25/2022] Open
Abstract
Cloning of mammals by somatic cell nuclear transfer (SCNT) is still plagued by low efficiency. The epigenetic modifications established during cellular differentiation are a major factor determining this low efficiency as they act as epigenetic barriers restricting reprogramming of somatic nuclei. In this regard, most factors that promote chromatin decondensation, including histone deacetylase inhibitors (HDACis), have been found to increase nuclear reprogramming efficiency, making their use common to improve SCNT rates. Herein we used valproic acid (VPA) in SCNT to test whether the treatment of nuclear donor cells with this HDACi improves pre- and post-implantation development of cloned cattle. We found that the treatment of fibroblasts with VPA increased histone acetylation without affecting DNA methylation. Moreover, the treatment with VPA resulted in increased expression of IGF2R and PPARGC1A, but not of POU5F1. However, when treated cells were used as nuclear donors no difference of histone acetylation was found after oocyte reconstruction compared to the use of untreated cells. Moreover, shortly after artificial activation the histone acetylation levels were decreased in the embryos produced with VPA-treated cells. With respect to developmental rates, the use of treated cells as donors resulted in no difference during pre- and post-implantation development. In total, five clones developed to term; three produced with untreated cells and two with VPA-treated cells. Among the calves from treated group, one stillborn calf was delivered at day 270 of gestation whereas the other one was delivered at term but died shortly after birth. Among the calves from the control group, one died seven days after birth whereas the other two are still alive and healthy. Altogether, these results show that in spite of the alterations in fibroblasts resulting from the treatment with VPA, their use as donor cells in SCNT did not improve pre- and post-implantation development of cloned cattle.
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Affiliation(s)
- Juliano Rodrigues Sangalli
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, Brazil
- Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Department of Biomedical Science, Ontario Veterinary College, University of Guelph, Ontario, Canada
- * E-mail:
| | - Marcos Roberto Chiaratti
- Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Departamento de Genética e Evolução, Centro de Ciências Biológicas e da Saúde, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Tiago Henrique Camara De Bem
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, Brazil
- Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Reno Roldi de Araújo
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, Brazil
- Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Fabiana Fernandes Bressan
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, Brazil
| | - Rafael Vilar Sampaio
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, Brazil
- Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Department of Biomedical Science, Ontario Veterinary College, University of Guelph, Ontario, Canada
| | - Felipe Perecin
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, Brazil
| | - Lawrence Charles Smith
- Centre de recherche em reproduction animale, Faculté de médecine vétérinaire, Université de Montréal, St. Hyacinthe, Québec, Canada
| | - Willian Allan King
- Department of Biomedical Science, Ontario Veterinary College, University of Guelph, Ontario, Canada
| | - Flávio Vieira Meirelles
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, Brazil
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Li B, Li JB, Xiao XF, Ma YF, Wang J, Liang XX, Zhao HX, Jiang F, Yao YQ, Wang XH. Altered DNA methylation patterns of the H19 differentially methylated region and the DAZL gene promoter are associated with defective human sperm. PLoS One 2013; 8:e71215. [PMID: 24015185 PMCID: PMC3756053 DOI: 10.1371/journal.pone.0071215] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 06/30/2013] [Indexed: 01/28/2023] Open
Abstract
DNA methylation disturbance is associated with defective human sperm. However, oligozoospermia (OZ) and asthenozoospermia (AZ) usually present together, and the relationship between the single-phenotype defects in human sperm and DNA methylation is poorly understood. In this study, 20 infertile OZ patients and 20 infertile AZ patients were compared with 20 fertile normozoospermic men. Bisulfate-specific PCR was used to analyze DNA methylation of the H19-DMR and the DAZL promoter in these subjects. A similar DNA methylation pattern of the H19-DMR was detected in AZ and NZ(control), with only complete methylation and mild hypomethylation(<50% unmethylated CpGs) identified, and there was no significant difference in the occurrence of these two methylation patterns between AZ and NZ (P>0.05). However, the methylation pattern of severe hypomethylation (>50% unmethylated CpGs ) and complete unmethylation was only detected in 5 OZ patients, and the occurrence of these two methylation patterns was 8.54±10.86% and 9±6.06%, respectively. Loss of DNA methylation of the H19-DMR in the OZ patients was found to mainly occur in CTCF-binding site 6, with occurrence of 18.15±14.71%, which was much higher than that in patients with NZ (0.84±2.05%) and AZ (0.58±1.77%) (P<0.001).Additional, our data indicated the occurrence of >20% methylated clones in the DAZL promoter only in infertile patients, there was no significant difference between the AZ and OZ patients in the proportion of moderately-to-severely hypermethylated clones (p>0.05). In all cases, global sperm genome methylation analyses, using LINE1 transposon as the indicator, showed that dysregulation of DNA methylation is specifically associated with the H19-DMR and DAZL promoter. Therefore, abnormal DNA methylation status of H19-DMR, especially at the CTCF-binding site 6, is closely associated with OZ. Abnormal DNA methylation of the DAZL promoter might represent an epigenetic marker of male infertility.
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Affiliation(s)
- Bo Li
- Department of Obstetrics and Gynecology, Tangdu Hospital, the Fourth Military Medical University, Xi'an, China
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Xiao Y, Zhang H, Ahmad S, Bai L, Wang X, Huo L, Zhang X, Li W, Li X, Yang L. Sperm capacitation combined with removal of the sperm acrosome and plasma membrane enhances paternal nucleus remodelling and early development of bovine androgenetic embryos. Reprod Fertil Dev 2013; 25:624-38. [DOI: 10.1071/rd12075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Accepted: 05/17/2012] [Indexed: 11/23/2022] Open
Abstract
The androgenetic embryo is a useful model for functional analysis of the paternal genome during embryogenesis. However, few studies have focused on the factors involved in the suppressed developmental competence of such embryos or why sperm cloning-derived androgenetic embryos fail to develop beyond the morula stage in large domestic animals. To overcome this developmental failure, we tried to improve sperm decondensation, as well as to enhance embryonic development by sperm capacitation and removal of the acrosome and plasma membrane before injection of the spermatozoa. Before injection of the spermatozoa, we quantified the effects of sperm capacitation combined with sperm pretreatment on the acrosome and plasma membrane status. We also evaluated sperm decondensation potential, sperm viability and chromatin integrity. Immunostaining data showed that the sperm acrosome and plasma membrane could be more efficiently removed after capacitation. Dithiothreitol-induced sperm decondensation potential was improved with capacitation and removal of the acrosome and plasma membrane. Although most spermatozoa lost viability after pretreatment, their chromatin remained integrated. The patterns of paternal chromatin remodelling within uncleaved androgenetic embryos and the nucleus morphology of cleaved embryos indicated that capacitation combined with membrane disruption could make injected spermatozoa decondense synchronously not only with each other, but also with the developmental pace of the ooplasm. We successfully produced androgenetic blastocysts, and efficiency increased with sperm pretreatment. In conclusion, sperm decondensation and the early development of androgenetic embryos were enhanced with sperm capacitation and removal of the acrosome and plasma membrane prior to sperm injection.
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Increased cleavage rate of human nuclear transfer embryos after 5-aza-2′-deoxycytidine treatment. Reprod Biomed Online 2012; 25:425-33. [DOI: 10.1016/j.rbmo.2012.06.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 06/24/2012] [Accepted: 06/25/2012] [Indexed: 11/18/2022]
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Hue I, Degrelle SA, Turenne N. Conceptus elongation in cattle: Genes, models and questions. Anim Reprod Sci 2012; 134:19-28. [DOI: 10.1016/j.anireprosci.2012.08.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Degrelle SA, Jaffrezic F, Campion E, Lê Cao KA, Le Bourhis D, Richard C, Rodde N, Fleurot R, Everts RE, Lecardonnel J, Heyman Y, Vignon X, Yang X, Tian XC, Lewin HA, Renard JP, Hue I. Uncoupled embryonic and extra-embryonic tissues compromise blastocyst development after somatic cell nuclear transfer. PLoS One 2012; 7:e38309. [PMID: 22701625 PMCID: PMC3368877 DOI: 10.1371/journal.pone.0038309] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 05/04/2012] [Indexed: 02/04/2023] Open
Abstract
Somatic cell nuclear transfer (SCNT) is the most efficient cell reprogramming technique available, especially when working with bovine species. Although SCNT blastocysts performed equally well or better than controls in the weeks following embryo transfer at Day 7, elongation and gastrulation defects were observed prior to implantation. To understand the developmental implications of embryonic/extra-embryonic interactions, the morphological and molecular features of elongating and gastrulating tissues were analysed. At Day 18, 30 SCNT conceptuses were compared to 20 controls (AI and IVP: 10 conceptuses each); one-half of the SCNT conceptuses appeared normal while the other half showed signs of atypical elongation and gastrulation. SCNT was also associated with a high incidence of discordance in embryonic and extra-embryonic patterns, as evidenced by morphological and molecular “uncoupling”. Elongation appeared to be secondarily affected; only 3 of 30 conceptuses had abnormally elongated shapes and there were very few differences in gene expression when they were compared to the controls. However, some of these differences could be linked to defects in microvilli formation or extracellular matrix composition and could thus impact extra-embryonic functions. In contrast to elongation, gastrulation stages included embryonic defects that likely affected the hypoblast, the epiblast, or the early stages of their differentiation. When taking into account SCNT conceptus somatic origin, i.e. the reprogramming efficiency of each bovine ear fibroblast (Low: 0029, Med: 7711, High: 5538), we found that embryonic abnormalities or severe embryonic/extra-embryonic uncoupling were more tightly correlated to embryo loss at implantation than were elongation defects. Alternatively, extra-embryonic differences between SCNT and control conceptuses at Day 18 were related to molecular plasticity (high efficiency/high plasticity) and subsequent pregnancy loss. Finally, because it alters re-differentiation processes in vivo, SCNT reprogramming highlights temporally and spatially restricted interactions among cells and tissues in a unique way.
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Affiliation(s)
- Séverine A. Degrelle
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
| | - Florence Jaffrezic
- INRA, UMR1313, Génétique Animale et Biologie Intégrative, Jouy-en-Josas, France
| | - Evelyne Campion
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
| | - Kim-Anh Lê Cao
- INRA, UR631, Station d’Amélioration Génétique des Animaux, Castanet, France
| | - Daniel Le Bourhis
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
- UNCEIA, R&D Department, Maisons Alfort, France
| | | | - Nathalie Rodde
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
| | - Renaud Fleurot
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
| | - Robin E. Everts
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | | | - Yvan Heyman
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
| | - Xavier Vignon
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
| | - Xiangzhong Yang
- Department of Animal Science and Center for Regenerative Biology, University of Connecticut, Storrs, Connecticut, United States of America
| | - Xiuchun C. Tian
- Department of Animal Science and Center for Regenerative Biology, University of Connecticut, Storrs, Connecticut, United States of America
| | - Harris A. Lewin
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Jean-Paul Renard
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
| | - Isabelle Hue
- INRA, UMR 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
- ENVA, Maisons Alfort, France
- * E-mail:
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31
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O'Doherty AM, O'Shea LC, Fair T. Bovine DNA Methylation Imprints Are Established in an Oocyte Size-Specific Manner, Which Are Coordinated with the Expression of the DNMT3 Family Proteins1. Biol Reprod 2012; 86:67. [DOI: 10.1095/biolreprod.111.094946] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Abstract
Reprogramming of adult somatic cells into pluripotent stem cells may provide an attractive source of stem cells for regenerative medicine. It has emerged as an invaluable method for generating patient-specific stem cells of any cell lineage without the use of embryonic stem cells. A revolutionary study in 2006 showed that it is possible to convert adult somatic cells directly into pluripotent stem cells by using a limited number of pluripotent transcription factors and is called as iPS cells. Currently, both genomic integrating viral and nonintegrating nonviral methods are used to generate iPS cells. However, the viral-based technology poses increased risk of safety, and more studies are now focused on nonviral-based technology to obtain autologous stem cells for clinical therapy. In this review, the pros and cons of the present iPS cell technology and the future direction for the successful translation of this technology into the clinic are discussed.
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Golbabapour S, Abdulla MA, Hajrezaei M. A concise review on epigenetic regulation: insight into molecular mechanisms. Int J Mol Sci 2011; 12:8661-94. [PMID: 22272098 PMCID: PMC3257095 DOI: 10.3390/ijms12128661] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 11/07/2011] [Accepted: 11/10/2011] [Indexed: 12/17/2022] Open
Abstract
Epigenetic mechanisms are responsible for the regulation of transcription of imprinted genes and those that induce a totipotent state. Starting just after fertilization, DNA methylation pattern undergoes establishment, reestablishment and maintenance. These modifications are important for normal embryo and placental developments. Throughout life and passing to the next generation, epigenetic events establish, maintain, erase and reestablish. In the context of differentiated cell reprogramming, demethylation and activation of genes whose expressions contribute to the pluripotent state is the crux of the matter. In this review, firstly, regulatory epigenetic mechanisms related to somatic cell nuclear transfer (SCNT) reprogramming are discussed, followed by embryonic development, and placental epigenetic issues.
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Affiliation(s)
- Shahram Golbabapour
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (M.A.A.); (M.H.)
| | - Mahmood Ameen Abdulla
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (M.A.A.); (M.H.)
| | - Maryam Hajrezaei
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; E-Mails: (M.A.A.); (M.H.)
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Dey D, Evans GRD. Generation of Induced Pluripotent Stem (iPS) Cells by Nuclear Reprogramming. Stem Cells Int 2011; 2011:619583. [PMID: 22007240 PMCID: PMC3189620 DOI: 10.4061/2011/619583] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 06/18/2011] [Accepted: 06/22/2011] [Indexed: 01/04/2023] Open
Abstract
During embryonic development pluripotency is progressively lost irreversibly by cell division, differentiation, migration and organ formation. Terminally differentiated cells do not generate other kinds of cells. Pluripotent stem cells are a great source of varying cell types that are used for tissue regeneration or repair of damaged tissue. The pluripotent stem cells can be derived from inner cell mass of blastocyte but its application is limited due to ethical concerns. The recent discovery of iPS with defined reprogramming factors has initiated a flurry of works on stem cell in various laboratories. The pluripotent cells can be derived from various differentiated adult cells as well as from adult stem cells by nuclear reprogramming, somatic cell nuclear transfer etc. In this review article, different aspects of nuclear reprogramming are discussed.
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Affiliation(s)
- Dilip Dey
- Aesthetic and Plastic Surgery Institute, University of California, Irvine, Orange, CA 92868, USA
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