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Ren X, Tong Y, Yang T, Huang S, Xu T, Xue Q, Shi D, Li X. Overexpression of BRG1 improves early development of porcine somatic cell nuclear transfer embryos. Theriogenology 2024; 217:51-63. [PMID: 38245973 DOI: 10.1016/j.theriogenology.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/15/2023] [Accepted: 01/04/2024] [Indexed: 01/23/2024]
Abstract
The epigenetic modification levels of donor cells directly affect the developmental potential of somatic cell nuclear transfer (SCNT) embryos. BRG1, as an epigenetic modifying enzyme, has not yet been studied in donor cells and SCNT embryos. In this study, BRG1 was overexpressed in porcine fetal fibroblasts (PFFs), its effect on chromatin openness and gene transcription was examined, subsequently, the development potential of porcine SCNT embryos was investigated. The results showed that compared with the control group, the percentage of G1 phase cells was significantly increased (32.3 % ± 0.87 vs 25.7 % ± 0.81, P < 0.05) in the experimental group. The qRT-PCR results showed that the expression of H3K9me3-related genes was significantly decreased (P < 0.05), HAT1 was significantly increased (P < 0.05). Assay of Transposase Accessible Chromatin sequencing (ATAC-seq) results revealed that SMARCA4、NANOG、SOX2、MAP2K6 and HIF1A loci had more open chromatin peaks in the experimental group. The RNA-seq results showed that the upregulated genes were mainly enriched in PI3K/AKT and WNT signaling pathways, and the downregulated genes were largely focused on disease development. Interestingly, the developmental rate of porcine SCNT embryos was improved (27.33 % ± 1.40 vs 17.83 % ± 2.02, P < 0.05), the expression of zygotic gene activation-related genes in 4-cell embryos, and embryonic development-related genes in blastocysts was significantly upregulated in the experimental group (P < 0.05). These results suggest that overexpression of BRG1 in donor cells is benefit for the developmental potential of porcine SCNT embryos.
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Affiliation(s)
- Xuan Ren
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Yi Tong
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Ting Yang
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Shihai Huang
- College of Life Science and Technology, Guangxi University, Nanning, China
| | - Tairan Xu
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Qingsong Xue
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Deshun Shi
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Xiangping Li
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China.
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2
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Glanzner WG, de Macedo MP, Gutierrez K, Bordignon V. Enhancement of Chromatin and Epigenetic Reprogramming in Porcine SCNT Embryos—Progresses and Perspectives. Front Cell Dev Biol 2022; 10:940197. [PMID: 35898400 PMCID: PMC9309298 DOI: 10.3389/fcell.2022.940197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/20/2022] [Indexed: 12/12/2022] Open
Abstract
Over the last 25 years, cloned animals have been produced by transferring somatic cell nuclei into enucleated oocytes (SCNT) in more than 20 mammalian species. Among domestic animals, pigs are likely the leading species in the number of clones produced by SCNT. The greater interest in pig cloning has two main reasons, its relevance for food production and as its use as a suitable model in biomedical applications. Recognized progress in animal cloning has been attained over time, but the overall efficiency of SCNT in pigs remains very low, based on the rate of healthy, live born piglets following embryo transfer. Accumulating evidence from studies in mice and other species indicate that new strategies for promoting chromatin and epigenetic reprogramming may represent the beginning of a new era for pig cloning.
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3
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Chen X, Xing M. Effects of 5-Aza-2'-deoxycytidine on hormone secretion and epigenetic regulation in sika deer ovarian granulosa cells. Reprod Domest Anim 2020; 56:360-369. [PMID: 33254280 DOI: 10.1111/rda.13873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/14/2020] [Accepted: 11/28/2020] [Indexed: 11/29/2022]
Abstract
5-Aza-2'-deoxycytidine (5-Aza-dC), an inhibitor of DNA methyltransferases, is an effective treatment for various cancers and has improved the development rate of cloned embryos. Previous studies have reported the effect of 5-Aza-dC on fibroblasts; however, the mechanism whereby 5-Aza-dC affects sika deer granulosa cells and hormone secretion is presently unknown. Here, we showed that the cell cycle after treatment with different doses of 5-Aza-dC was significantly altered. The number of cells in the S phase was significantly increased in response to a concentration of 0.1 μM 5-Aza-dC. The rate of apoptosis was increased when cells were treated with 0.1 μM and 5 μM 5-Aza-dC. We showed that the protein level of H3K9me2 was significantly decreased in response to 5-Aza-dC. The activity levels of DNA methyltransferase were reduced by a moderate dose of 5-Aza-dC. Furthermore, the secretion of E2 and P4 was influenced by different doses of 5-Aza-dC. Our study suggested that 5-Aza-dC affected hormone secretion in sika deer granulosa cells through cell development and epigenetic regulation. The findings of this study lay the foundation for further epigenetic studies in sika deer.
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Affiliation(s)
- Xiumin Chen
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Mingjie Xing
- State Key laboratory of Special Economic Animal Molecular Biology, Changchun, China
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4
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Qu J, Wang X, Jiang Y, Lv X, Song X, He H, Huan Y. Optimizing 5-aza-2'-deoxycytidine treatment to enhance the development of porcine cloned embryos by inhibiting apoptosis and improving DNA methylation reprogramming. Res Vet Sci 2020; 132:229-236. [PMID: 32619801 DOI: 10.1016/j.rvsc.2020.06.020] [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: 12/07/2019] [Revised: 06/18/2020] [Accepted: 06/18/2020] [Indexed: 10/25/2022]
Abstract
Apoptosis and incomplete DNA methylation reprogramming in cloned embryos reduce cloning efficiency. 5-aza-2'-deoxycytidine (5-aza-dC) is proven to regulate apoptosis and DNA methylation reprogramming, however, the treatment method and potential role of 5-aza-dC during cloned embryo development are still not well studied. This study displayed that treating donor cells with 5-aza-dC (AN group) significantly reduced the blastocyst rate, while treating cloned embryos (NA group) or both donor cells and cloned embryos (ANA group) significantly promoted the blastocyst formation, and the ANA group was the best treatment of 5-aza-dC to enhance the development of cloned embryos. Then, compared with the NT group, the ANA group showed the significantly enhanced nuclear remodeling. The apoptotic cell numbers and rates of blastocysts were significantly reduced, and the expression levels of significantly upregulated anti-apoptosis gene Bcl2l1 and downregulated pro-apoptosis genes Bax, P53 and Caspase3 were observed in the ANA group. Further study demonstrated that the transcription levels of DNA methylation reprogramming genes Dnmt1, Dnmt3a, Tet1 and Tet3 were significantly upregulated, and, significant genomic DNA remethylation, DNA demethylation of pluripotency gene Oct4, and DNA remethylation of tissue specific gene Thy1 were observed at the blastocyst stage in the ANA group. Embryo development related genes including Igf2, H19, Oct4, Nanog, Sox2, Eif1a, Cdx2 and ATP1b1 were significantly upregulated, and Thy1 and Col5a2 were remarkably silenced at the 4-cell and blastocyst stages in the ANA group. In conclusion, the best 5-aza-dC treatment enhanced the development of cloned embryos by inhibiting apoptosis and improving DNA methylation reprogramming.
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Affiliation(s)
- Jiadan Qu
- College of Veterinary Medicine, Qingdao Agricultural University, Shandong Province, Qingdao, China
| | - Xiangyu Wang
- College of Veterinary Medicine, Qingdao Agricultural University, Shandong Province, Qingdao, China
| | - Yujia Jiang
- College of Veterinary Medicine, Qingdao Agricultural University, Shandong Province, Qingdao, China
| | - Xiaofei Lv
- College of Veterinary Medicine, Qingdao Agricultural University, Shandong Province, Qingdao, China
| | - Xuexiong Song
- College of Veterinary Medicine, Qingdao Agricultural University, Shandong Province, Qingdao, China
| | - Hongbin He
- College of Life Science, Shandong Normal University, Shandong Province, Jinan, China
| | - Yanjun Huan
- College of Veterinary Medicine, Qingdao Agricultural University, Shandong Province, Qingdao, China.
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5
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Zhao X, Nie J, Tang Y, He W, Xiao K, Pang C, Liang X, Lu Y, Zhang M. Generation of Transgenic Cloned Buffalo Embryos Harboring the EGFP Gene in the Y Chromosome Using CRISPR/Cas9-Mediated Targeted Integration. Front Vet Sci 2020; 7:199. [PMID: 32426378 PMCID: PMC7212351 DOI: 10.3389/fvets.2020.00199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 03/25/2020] [Indexed: 11/16/2022] Open
Abstract
Sex control technology is of great significance in the production of domestic animals, especially for rapidly breeding water buffalo (bubalus bubalis), which served as a research model in the present study. We have confirmed that a fluorescence protein integrated into the Y chromosome is fit for sexing pre-implantation embryos in the mouse. Firstly, we optimized the efficiency of targeted integration of exogenous gene encoding enhanced green fluorescent protein (eGFP) and mCherry in Neuro-2a cells, mouse embryonic stem cells, mouse embryonic cells (NIH3T3), buffalo fetal fibroblast (BFF) cells. The results showed that a homology arm length of 800 bp on both sides of the target is more efficient that 300 bp or 300 bp/800 bp. Homology-directed repair (HDR)-mediated knock-in in BFF cells was also significantly improved when cells were supplemented with pifithrin-μ, which is a small molecule that inhibits the binding of p53 to mitochondria. Three pulses at 250 V resulted in the most efficient electroporation in BFF cells and 1.5 μg/mL puromycin was found to be the optimal concentration for screening. Moreover, Y-Chr-eGFP transgenic BFF cells and cloned buffalo embryos were successfully generated using CRISPR/Cas9-mediated gene editing combined with the somatic cell nuclear transfer (SCNT) technique. At passage numbers 6–8, the growth rate and cell proliferation rate were significantly lower in Y-Chr-eGFP transgenic than in non-transgenic BFF cells; the expression levels of the methylation-related genes DNMT1 and DNMT3a were similar; however, the expression levels of the acetylation-related genes HDAC1, HDAC2, and HDAC3 were significantly higher (p < 0.05) in Y-Chr-eGFP transgenic BFF cells compared with non-transgenic cells. Y-Chr-eGFP transgenic BFFs were used as donors for SCNT, the results showed that eGFP reporter is suitable for the visualization of the sex of embryos. The blastocyst rates of cloned buffalo embryos were similar; however, the cleavage rates of transgenic cloned embryos were significantly lower compared with control. In summary, we optimized the protocol for generating transgenic BFF cells and successfully generated Y-Chr-eGFP transgenic embryos using these cells as donors.
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Affiliation(s)
- Xiuling Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Junyu Nie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Yuyan Tang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Wengtan He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Kai Xiao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Chunying Pang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Buffalo Research Institute, Chinese Academy of Agricultural Science, Nanning, China
| | - Xianwei Liang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Buffalo Research Institute, Chinese Academy of Agricultural Science, Nanning, China
| | - Yangqing Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Ming Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
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Cao H, Li J, Su W, Li J, Wang Z, Sun S, Tian S, Li L, Wang H, Li J, Fang X, Wei Q, Liu C. Zebularine significantly improves the preimplantation development of ovine somatic cell nuclear transfer embryos. Reprod Fertil Dev 2019; 31:357-365. [PMID: 30196805 DOI: 10.1071/rd17357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 07/14/2018] [Indexed: 01/23/2023] Open
Abstract
Aberrant DNA methylation reduces the developmental competence of mammalian somatic cell nuclear transfer (SCNT) embryos. Thus, hypomethylation-associated drugs are beneficial for improving reprogramming efficiency. Therefore, in the present study we investigated the effect of zebularine, a relatively novel DNA methyltransferase inhibitor, on the developmental potential of ovine SCNT embryos. First, reduced overall DNA methylation patterns and gene-specific DNA methylation levels at the promoter regions of pluripotency genes (octamer-binding transcription factor 4 (Oct4), SRY (sex determining region Y)-box 2 (Sox2) and Nanog) were found in zebularine-treated cumulus cells. In addition, the DNA methylation levels in SCNT embryos derived from zebularine-treated cumulus cells were significantly reduced at the 2-, 4-, 8-cell, and blastocyst stages compared with their corresponding controls (P<0.05). The blastocyst rate was significantly improved in SCNT embryos reconstructed by the cumulus donor cells treated with 5nM zebularine for 12h compared with the control group (25.4±1.6 vs 11.8±1.7%, P<0.05). Moreover, the abundance of Oct4 and Sox2 mRNA was significantly increased during the preimplantation stages after zebularine treatment (P<0.05). In conclusion, the results indicate that, in an ovine model, zebularine decreases overall DNA methylation levels in donor cumulus cells and reconstructed embryos, downregulates the DNA methylation profile in the promoter region of pluripotency genes in donor cells and ultimately elevates the expression of pluripotency genes in the reconstructed embryos, which can lead to improved development of SCNT embryos.
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Affiliation(s)
- Hui Cao
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Jun Li
- Department of Reproductive Medicine,The First Hospital of Hebei Medical University, NO.89 Donggang Road, Yuhua District, Shijiazhuang 050031, PR China
| | - Wenlong Su
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Junjie Li
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Zhigang Wang
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Shuchun Sun
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Shujun Tian
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Lu Li
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Hanyang Wang
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Jiexin Li
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Xiaohuan Fang
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Qiaoli Wei
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
| | - Chuang Liu
- College of Animal Science and Technology, Hebei Agricultural University , No. 2596 Lekai South Street, Lianchi District, Baoding 071000, PR China
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7
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Samiec M, Romanek J, Lipiński D, Opiela J. Expression of pluripotency-related genes is highly dependent on trichostatin A-assisted epigenomic modulation of porcine mesenchymal stem cells analysed for apoptosis and subsequently used for generating cloned embryos. Anim Sci J 2019; 90:1127-1141. [PMID: 31298467 DOI: 10.1111/asj.13260] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 04/30/2019] [Accepted: 06/04/2019] [Indexed: 12/13/2022]
Abstract
The present study sought to examine whether trichostatin A (TSA)-assisted epigenetic transformation of porcine bone marrow (BM)-derived mesenchymal stem cells (BM-MSCs) affects the transcriptional activities of pluripotency-related genes (Oct4, Nanog, c-Myc, Sox2 and Rex1), multipotent stemness-related gene (Nestin) and anti-apoptotic/anti-senescence-related gene (Survivin). Epigenetically transformed or non-transformed BM-MSCs that had been transcriptionally profiled by qRT-PCR and had been analysed for different stages of apoptosis progression provided a source of nuclear donor cells for the in vitro production of cloned pig embryos. TSA-mediated epigenomic modulation has been found to enhance the multipotency extent, stemness and intracellular anti-ageing properties of porcine BM-MSCs. This has been confirmed by the relative abundances for Nanog, c-Myc Rex1, Sox2 and Survivin mRNAs in TSA-exposed BM-MSCs that turned out to be significantly higher than those of TSA-unexposed BM-MSCs. Additionally, TSA-assisted epigenomic modulation of BM-MSCs did not impact the caspase-8 activity, Bax protein expression and the incidence of TUNEL-positive cells. In conclusion, the considerably elevated quantitative profiles of Sox2, Rex1, c-Myc, Nanog and Survivin mRNA transcripts seem to trigger improved reprogrammability of TSA-treated BM-MSC nuclei in cloned pig embryos that thereby displayed remarkably increased blastocyst formation rates as compared to those noticed for embryos derived from TSA-untreated BM-MSCs.
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Affiliation(s)
- Marcin Samiec
- Department of Reproductive Biotechnology and Cryoconservation, National Research Institute of Animal Production, Balice n. Kraków, Poland
| | - Joanna Romanek
- Department of Reproductive Biotechnology and Cryoconservation, National Research Institute of Animal Production, Balice n. Kraków, Poland
| | - Daniel Lipiński
- Department of Biochemistry and Biotechnology, Poznań University of Life Sciences, Poznań, Poland
| | - Jolanta Opiela
- Department of Reproductive Biotechnology and Cryoconservation, National Research Institute of Animal Production, Balice n. Kraków, Poland
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8
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Gupta MK, Heo YT, Kim DK, Lee HT, Uhm SJ. 5-Azacytidine improves the meiotic maturation and subsequent in vitro development of pig oocytes. Anim Reprod Sci 2019; 208:106118. [PMID: 31405459 DOI: 10.1016/j.anireprosci.2019.106118] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 06/03/2019] [Accepted: 07/08/2019] [Indexed: 12/25/2022]
Abstract
Treatment of donor cells and/or cloned embryos with cytidine analogues, having an Aza group at its 5th carbon (5-Aza), such as 5-Azacytidine (5-Aza-C) or 5-Aza-2'-deoxycytidine (5-Aza-dC) improves the in vitro development of cloned embryos produced by somatic cell nuclear transfer (SCNT). In vitro maturation (IVM) of immature pig oocytes treated with 5-Aza-C not only results in greater (P < 0.05) meiotic maturation to the MII stage but also enhances the capacity of 5-Aza-C treated oocytes for early embryonic development after parthenogenetic activation (PA), in vitro fertilization (IVF) or SCNT in a dose-dependent manner (0-10 μM). Cloned embryos generated from 5-Aza-C (0.01 μM) treated oocytes had an increased capacity to develop to the blastocyst stage (14.1 ± 1.5% compared with 9.6 ± 1.8%), greater probability of hatching (61.8 ± 1.5% compared with 45.0 ± 3.9%) and contained a greater number of cells per blastocyst (38.5 ± 4.4 compared with 30.5 ± 3.4) than those produced from non-treated control oocytes (P < 0.05). Data from the present study indicate that treatment of oocytes with 5-Aza-C may be an important approach to enhance the meiotic maturation and subsequent in vitro development of pig embryos. Future studies should be conducted to determine the underlying mechanism of improved early embryonic development of 5-Aza-C treated oocytes.
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Affiliation(s)
- Mukesh Kumar Gupta
- Department of Animal Science and Biotechnology, Sangji Youngseo College, Wonju 26339, South Korea; Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008, India
| | - Young Tae Heo
- Department of Animal Science and Biotechnology, Sangji Youngseo College, Wonju 26339, South Korea
| | - Dong Ku Kim
- Nuri Science Inc., 320 Achasanro, Seoul 05053, South Korea
| | - Hoon Taek Lee
- Department of Animal Biotechnology, College of Animal Bioscience & Technology, Konkuk University, Seoul 05029, South Korea
| | - Sang Jun Uhm
- Department of Animal Science and Biotechnology, Sangji Youngseo College, Wonju 26339, South Korea.
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Fang X, Xia W, Cao H, Guo Y, Wang H, Zhang X, Wan P, Liu C, Wei Q, Sun S, Tian S, Li J, Wang Z. Effect of supplemetation of Zebularine and Scriptaid on efficiency of in vitro developmental competence of ovine somatic cell nuclear transferred embryos. Anim Biotechnol 2019; 31:155-163. [PMID: 30734624 DOI: 10.1080/10495398.2018.1559846] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Somatic cell nuclear transfer (SCNT) technology has been applied in the construction of disease model, production of transgenic animals, therapeutic cloning, and other fields. However, the cloning efficiency remains limited. In our study, to improve SCNT efficiency, brilliant cresyl blue (BCB) staining were chosen to select recipient oocytes. In addition, DNA methyltransferase inhibitor Zebularine (5 nmol/L) and histone deacetylase inhibitor Scriptaid (0.2 μmol/L) were jointly used to treat sheep donor cumulus cells and reconstructed embryo. Moreover, the expression levels of embryonic development-related genes (OCT4, SOX2, H19, IGF2 and Dnmt1) of reconstructed embryo were also detected. Using BCB + oocytes as recipient cell, donor cumulus cells and reconstructed embryos were treated with 5 nmol/L Zebularine and 0.2 μmol/L Scriptaid, the blastocyst rate in Zeb + SCR-SCNT group (28.25%) was significantly higher than SCNT (21.16%) (p < 0.05). Furthermore, results showed that expression levels of OCT4, SOX2, H19, IGF2 and Dnmt1 genes in Zeb + SCR-SCNT embryos were more similar to IVF embryos. Our study proved that 5 nmol/L Zebularine and 0.2 μmol/L Scriptaid treating with sheep donor cumulus cells and reconstructed embryos improved SCNT blastocyst rate and relieve the abnormal expression of embryonic developmental related genes.
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Affiliation(s)
- Xiaohuan Fang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China
| | - Wei Xia
- College of Life Science and Technology, Southwest Minzu University, Chengdu, China
| | - Hui Cao
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China
| | - Yanhua Guo
- State Key Laboratory for Sheep Genetic Improvement and Healthy Production, Institute of Animal Husbandry and Veterinary, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
| | - Han Wang
- College of Food Science and Technology, Hebei Agricultural University, Baoding, PR China
| | - Xiaosheng Zhang
- Animal Husbandry and Veterinary Research Institute of Tianjin, Tianjin, China
| | - Pengcheng Wan
- State Key Laboratory for Sheep Genetic Improvement and Healthy Production, Institute of Animal Husbandry and Veterinary, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi, China
| | - Chuang Liu
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China
| | - Qiaoli Wei
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China
| | - Shuchun Sun
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China.,Research Center of Cattle and Sheep Embryo Engineering Technique of Hebei Province, Baoding, PR China
| | - Shujun Tian
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China.,Research Center of Cattle and Sheep Embryo Engineering Technique of Hebei Province, Baoding, PR China
| | - Junjie Li
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China.,Research Center of Cattle and Sheep Embryo Engineering Technique of Hebei Province, Baoding, PR China
| | - Zhigang Wang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, PR China.,Research Center of Cattle and Sheep Embryo Engineering Technique of Hebei Province, Baoding, PR China
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10
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The effect of cell penetrating peptide-conjugated coactivator-associated arginine methyltransferase 1 (CPP-CARM1) on the cloned mouse embryonic development. Sci Rep 2018; 8:16721. [PMID: 30425285 PMCID: PMC6233168 DOI: 10.1038/s41598-018-35077-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 10/28/2018] [Indexed: 11/16/2022] Open
Abstract
Abnormalities in gene expression that negatively affect embryonic development are frequently observed in cloned embryos generated by somatic cell nuclear transfer (SCNT). In the present study, we successfully produced a cell-penetrating peptide (CPP)-conjugated with coactivator-associated arginine methyltransferase 1 (CARM1) protein from mammalian cells and confirmed introduction into donor somatic cells and cloned 8-cell embryos within 3 hours after addition to culture medium. In addition, H3R17 dimethylation and embryonic development up to the blastocyst stage were increased in the group treated with exogenous CPP-CARM1 protein compared with the untreated group (control). Interestingly, the number of total cells and trophectoderm in blastocysts as well as implantation rate were significantly increased in the CPP-CARM1 protein-treated group. However, the cell number of inner cell mass (ICM) was not changed compared with the control group; similarly, expression of pluripotency-related genes Oct4 and Nanog (ICM markers) was not significantly different between groups. On the other hand, expression of the implantation-related gene Cdx2 (trophectoderm marker) was transiently increased after treatment with CPP-CARM1 protein. On the basis of these results, we conclude that supplementation with exogenous CPP-CARM1 protein improves embryonic development of cloned embryos through regulation of histone methylation and gene expression. In addition, our results suggest that CPP-CARM1 protein may be a useful tool for strengthening implantation of mammalian embryos.
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11
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Gurgul A, Opiela J, Pawlina K, Szmatoła T, Bochenek M, Bugno-Poniewierska M. The effect of histone deacetylase inhibitor trichostatin A on porcine mesenchymal stem cell transcriptome. Biochimie 2017; 139:56-73. [PMID: 28552396 DOI: 10.1016/j.biochi.2017.05.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/23/2017] [Indexed: 12/29/2022]
Abstract
The use of histone deacetylase inhibitors such as trichostatin A (TSA) for epigenetic transformation of mesenchymal stem cells (MSCs), whose nuclei will be transferred into enucleated oocytes, is a novel approach in research involving somatic cell cloning of pigs and other mammalian species. Although the effectiveness of TSA in cloning applications was confirmed, processes and mechanisms underlying achieved effects are not yet fully understood, especially for pig MSCs. To contribute to this knowledge, in this study we performed a comprehensive transcriptome analysis using high-throughput sequencing of pig bone-marrow derived MSCs, both treated and untreated with TSA, and evaluated the effect of TSA administration on their transcription profile after 24 h of in vitro culture. The expression of selected positive and negative mesenchymal surface antigens was also evaluated in these cells by flow cytometry. Subsequently, the stability of induced expression changes was evaluated after another 55-72 h of culture without TSA. The results of this study showed that TSA does not affect the expression of the selected surface antigens related to MSC mesenchymal stemness origin, namely: CD90 (positive marker), CD31 and CD34 (negative markers) and has a wide stimulating effect on MSCs transcription, affecting genes across the whole genome with some minor signs of site-specific acting in regions on SSC2 and SSC6. TSA turned out to have a higher impact on already expressed genes with only minor abilities to induce expression of silenced genes. Genes with expression affected by TSA were related to a wide range of biological processes, however, we found some evidence for specific stimulation of genes associated with development, differentiation, neurogenesis or myogenesis. TSA also seemed to interfere with Wnt signaling pathways by upregulation of several engaged genes. The analysis of cell transcriptome after prolonged culture following the TSA removal, showed that the expression level of majority of genes affected by TSA is restored to the initial level. Nonetheless, the set of about six hundred genes responsible for e.g. adhesion, signal transduction and cell communication was altered even after 55-72 h of culture without TSA. TSA also enhanced expression of some of pluripotency marker genes (FGF2, LIF, TERT) but their expression was stabilized during further culture without TSA. The detailed analysis of factors connected with neuron-like differentiation allowed us to assume that TSA mostly stimulates neurogenic differentiation pathway in the pig MSCs possibly through interaction with Wnt-mediated signaling and thus triggers mechanisms conducive to epigenetic reprograming.
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Affiliation(s)
- Artur Gurgul
- National Research Institute of Animal Production, Department of Genomics and Molecular Biology, Krakowska 1, 32-083, Balice, Poland.
| | - Jolanta Opiela
- National Research Institute of Animal Production, Department of Biotechnology of Animal Reproduction, Krakowska 1, 32-083, Balice, Poland
| | - Klaudia Pawlina
- National Research Institute of Animal Production, Department of Genomics and Molecular Biology, Krakowska 1, 32-083, Balice, Poland
| | - Tomasz Szmatoła
- National Research Institute of Animal Production, Department of Genomics and Molecular Biology, Krakowska 1, 32-083, Balice, Poland
| | - Michał Bochenek
- National Research Institute of Animal Production, Department of Biotechnology of Animal Reproduction, Krakowska 1, 32-083, Balice, Poland
| | - Monika Bugno-Poniewierska
- National Research Institute of Animal Production, Department of Genomics and Molecular Biology, Krakowska 1, 32-083, Balice, Poland
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12
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Opiela J, Samiec M, Romanek J. In vitro development and cytological quality of inter-species (porcine→bovine) cloned embryos are affected by trichostatin A-dependent epigenomic modulation of adult mesenchymal stem cells. Theriogenology 2017; 97:27-33. [PMID: 28583605 DOI: 10.1016/j.theriogenology.2017.04.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 01/31/2017] [Accepted: 04/13/2017] [Indexed: 01/21/2023]
Abstract
Artificial epigenomic modulation of in vitro cultured mesenchymal stem cells (MSCs) by applying a non-selective HDAC inhibitor, termed TSA, can facilitate more epigenetic reprogramming of transcriptional activity of the somatic cell-descended nuclear genome in NT pig embryos. The results of the present investigation showed that TSA-dependent epigenomic modulation of nuclear donor MSCs highly affects both the in vitro developmental capability and the cytological quality of inter-species (porcine→bovine) cloned embryos. The developmental competences to reach the blastocyst stage among hybrid (porcine→bovine) nuclear-transferred embryos that had been reconstructed with bovine ooplasts and epigenetically modulated porcine MSCs were maintained at a relatively high level. These competences were higher than those noted in studies by other authors, but they were still decreased compared to those of intra-species (porcine) cloned embryos that had been reconstituted with porcine ooplasts and either the cell nuclei of epigenetically transformed MSCs or the cell nuclei of epigenetically non-transformed MSCs. In conclusion, MSCs undergoing TSA-dependent epigenetic transformation were used for the first time as a source of nuclear donor cells not only for inter-species somatic cell cloning in pigs but also for inter-species somatic cell cloning in other livestock species. Moreover, as a result of the current research, efficient sequential physicochemical activation of inter-species nuclear-transferred clonal cybrids derived from bovine ooplasm and porcine MSC nuclei was developed.
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Affiliation(s)
- J Opiela
- Department of Animal Reproduction Biotechnology, National Research Institute of Animal Production, Balice n., Kraków, Poland.
| | - M Samiec
- Department of Animal Reproduction Biotechnology, National Research Institute of Animal Production, Balice n., Kraków, Poland
| | - J Romanek
- Department of Animal Reproduction Biotechnology, National Research Institute of Animal Production, Balice n., Kraków, Poland
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13
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Nie JY, Zhu XX, Xie BK, Nong SQ, Ma QY, Xu HY, Yang XG, Lu YQ, Lu KH, Liao YY, Lu SS. Successful cloning of an adult breeding boar from the novel Chinese Guike No. 1 swine specialized strain. 3 Biotech 2016; 6:218. [PMID: 28330290 PMCID: PMC5055876 DOI: 10.1007/s13205-016-0525-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 09/15/2016] [Indexed: 11/26/2022] Open
Abstract
Somatic cloning, also known as somatic cell nuclear transfer (SCNT), is a promising technology which has been expected to rapidly extend the population of elaborately selected breeding boars with superior production performance. Chinese Guike No. 1 pig breed is a novel swine specialized strain incorporated with the pedigree background of Duroc and Chinese Luchuan pig breeds, thus inherits an excellent production performance. The present study was conducted to establish somatic cloning procedures of adult breeding boars from the Chinese Guike No. 1 specialized strain. Ear skin fibroblasts were first isolated from a three-year-old Chinese Guike No. 1 breeding boar, and following that, used as donor cell to produce nuclear transfer embryos. Such cloned embryos showed full in vitro development and with the blastocyst formation rate of 18.4 % (37/201, three independent replicates). Finally, after transferring of 1187 nuclear transfer derived embryos to four surrogate recipients, six live piglets with normal health and development were produced. The overall cloning efficiency was 0.5 % and the clonal provenance of such SCNT derived piglets was confirmed by DNA microsatellite analysis. All of the cloned piglets were clinically healthy and had a normal weight at 1 month of age. Collectively, the first successful cloning of an adult Chinese Guike No. 1 breeding boar may lay the foundation for future improving the pig production industry.
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Affiliation(s)
- Jun-Yu Nie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, 530004, China
| | - Xiang-Xing Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, 530004, China
| | - Bing-Kun Xie
- Guangxi Key Laboratory of Livestock Genetic Improvement, Guangxi Institute of Animal Sciences, Nanning, 530001, China
| | - Su-Qun Nong
- Guangxi Key Laboratory of Livestock Genetic Improvement, Guangxi Institute of Animal Sciences, Nanning, 530001, China
| | - Qing-Yan Ma
- Guangxi Key Laboratory of Livestock Genetic Improvement, Guangxi Institute of Animal Sciences, Nanning, 530001, China
| | - Hui-Yan Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, 530004, China
| | - Xiao-Gan Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, 530004, China
| | - Yang-Qing Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, 530004, China
| | - Ke-Huan Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, 530004, China
| | - Yu-Ying Liao
- Guangxi Key Laboratory of Livestock Genetic Improvement, Guangxi Institute of Animal Sciences, Nanning, 530001, China.
| | - Sheng-Sheng Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, 530004, China.
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14
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Huan YJ, Wu ZF, Zhang JG, Zhu J, Xie BT, Wang JY, Li JY, Xue BH, Kong QR, Liu ZH. Alteration of the DNA methylation status of donor cells impairs the developmental competence of porcine cloned embryos. J Reprod Dev 2015; 62:71-7. [PMID: 26537205 PMCID: PMC4768780 DOI: 10.1262/jrd.2015-048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Nuclear reprogramming induced by somatic cell nuclear transfer is an inefficient process, and donor cell DNA
methylation status is thought to be a major factor affecting cloning efficiency. Here, the role of donor cell
DNA methylation status regulated by 5-aza-2'-deoxycytidine (5-aza-dC) or
5-methyl-2'-deoxycytidine-5'-triphosphate (5-methyl-dCTP) in the early development of porcine cloned embryos
was investigated. Our results showed that 5-aza-dC or 5-methyl-dCTP significantly reduced or increased the
global methylation levels and altered the methylation and expression levels of key genes in donor cells.
However, the development of cloned embryos derived from these cells was reduced. Furthermore, disrupted
pseudo-pronucleus formation and transcripts of early embryo development-related genes were observed in cloned
embryos derived from these cells. In conclusion, our results demonstrated that alteration of the DNA
methylation status of donor cells by 5-aza-dC or 5-methyl-dCTP disrupted nuclear reprogramming and impaired
the developmental competence of porcine cloned embryos.
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Affiliation(s)
- Yan Jun Huan
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
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15
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Trichostatin A-mediated epigenetic transformation of adult bone marrow-derived mesenchymal stem cells biases the in vitro developmental capability, quality, and pluripotency extent of porcine cloned embryos. BIOMED RESEARCH INTERNATIONAL 2015; 2015:814686. [PMID: 25866813 PMCID: PMC4381569 DOI: 10.1155/2015/814686] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 02/21/2015] [Indexed: 12/23/2022]
Abstract
The current research was conducted to explore the in vitro developmental outcome and cytological/molecular quality of porcine nuclear-transferred (NT) embryos reconstituted with adult bone marrow-derived mesenchymal stem cells (ABM-MSCs) that were epigenetically transformed by treatment with nonspecific inhibitor of histone deacetylases, known as trichostatin A (TSA). The cytological quality of cloned blastocysts was assessed by estimation of the total cells number (TCN) and apoptotic index. Their molecular quality was evaluated by real-time PCR-mediated quantification of gene transcripts for pluripotency- and multipotent stemness-related markers (Oct4, Nanog, and Nestin). The morula and blastocyst formation rates of NT embryos derived from ABM-MSCs undergoing TSA treatment were significantly higher than in the TSA-unexposed group. Moreover, the NT blastocysts generated using TSA-treated ABM-MSCs exhibited significantly higher TCN and increased pluripotency extent measured with relative abundance of Oct4 and Nanog mRNAs as compared to the TSA-untreated group. Altogether, the improvements in morula/blastocyst yields and quality of cloned pig embryos seem to arise from enhanced abilities for promotion of correct epigenetic reprogramming of TSA-exposed ABM-MSC nuclei in a cytoplasm of reconstructed oocytes. To our knowledge, we are the first to report the successful production of mammalian high-quality NT blastocysts using TSA-dependent epigenomic modulation of ABM-MSCs.
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16
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Lee K, Prather RS. Advancements in somatic cell nuclear transfer and future perspectives. Anim Front 2013. [DOI: 10.2527/af.2013-0034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Kiho Lee
- Division of Animal Science, University of Missouri, Columbia, MO, USA
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17
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Huan YJ, Zhu J, Xie BT, Wang JY, Liu SC, Zhou Y, Kong QR, He HB, Liu ZH. Treating cloned embryos, but not donor cells, with 5-aza-2'-deoxycytidine enhances the developmental competence of porcine cloned embryos. J Reprod Dev 2013; 59:442-9. [PMID: 23748715 PMCID: PMC3934119 DOI: 10.1262/jrd.2013-026] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The efficiency of cloning by somatic cell nuclear transfer (SCNT) has remained low.
In most cloned embryos, epigenetic reprogramming is incomplete, and usually the
genome is hypermethylated. The DNA methylation inhibitor 5-aza-2’-deoxycytidine
(5-aza-dC) could improve the developmental competence of cow, pig, cat and human SCNT
embryos in previous studies. However, the parameters of 5-aza-dC treatment among
species are different, and whether 5-aza-dC could enhance the developmental
competence of porcine cloned embryos has still not been well studied. Therefore, in
this study, we treated porcine fetal fibroblasts (PFF) that then were used as donor
nuclei for nuclear transfer or fibroblast-derived reconstructed embryos with
5-aza-dC, and the concentration- and time-dependent effects of 5-aza-dC on porcine
cloned embryos were investigated by assessing pseudo-pronucleus formation,
developmental potential and pluripotent gene expression of these reconstructed
embryos. Our results showed that 5-aza-dC significantly reduced the DNA methylation
level in PFF (0 nM vs. 10 nM vs. 25 nM
vs. 50 nM, 58.70% vs. 37.37%
vs. 45.43% vs. 39.53%, P<0.05), but did not
improve the blastocyst rate of cloned embryos derived from these cells. Treating
cloned embryos with 25 nM 5-aza-dC for 24 h significantly enhanced the blastocyst
rate compared with that of the untreated group. Furthermore, treating cloned embryos,
but not donor cells, significantly promoted pseudo-pronucleus formation at 4 h post
activation (51% for cloned embryos treated, 34% for donor cells treated and 36% for
control, respectively, P<0.05) and enhanced the expression levels of pluripotent
genes (Oct4, Nanog and Sox2) up to
those of in vitro fertilized embryos during embryo development. In
conclusion, treating cloned embryos, but not donor cells, with 5-aza-dC enhanced the
developmental competence of porcine cloned embryos by promotion of pseudo-pronucleus
formation and improvement of pluripotent gene expression.
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Affiliation(s)
- Yan Jun Huan
- College of Life Science, Northeast Agricultural University, Haerbin 150030, China
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Kumar BM, Maeng GH, Lee YM, Lee JH, Jeon BG, Ock SA, Kang T, Rho GJ. Epigenetic modification of fetal fibroblasts improves developmental competency and gene expression in porcine cloned embryos. Vet Res Commun 2012; 37:19-28. [DOI: 10.1007/s11259-012-9542-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2012] [Indexed: 02/03/2023]
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