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Jin X, Liu W, Miao J, Tai Z, Li L, Guan P, Liu JX. Copper ions impair zebrafish skeletal myofibrillogenesis via epigenetic regulation. FASEB J 2021; 35:e21686. [PMID: 34101239 DOI: 10.1096/fj.202100183r] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/13/2021] [Accepted: 05/06/2021] [Indexed: 12/18/2022]
Abstract
Unbalanced copper (Cu2+ ) homeostasis is associated with the developmental defects of vertebrate myogenesis, but the underlying molecular mechanisms remain elusive. In this study, it was found that Cu2+ stressed zebrafish embryos and larvae showed reduced locomotor speed as well as loose and decreased myofibrils in skeletal muscle, coupled with the downregulated expression of muscle fiber markers mylpfa and smyhc1l and the irregular arrangement of myofibril and sarcomere. Meanwhile, the Cu2+ stressed zebrafish embryos and larvae also showed significant reduction in the expression of H3K4 methyltransferase smyd1b transcripts and H3K4me3 protein as well as in the binding enrichment of H3K4me3 on gene mylpfa promoter in skeletal muscle cells, suggesting that smyd1b-H3K4me3 axis mediates the Cu2+ -induced myofibrils specification defects. Additionally, whole genome DNA methylation sequencing unveiled that the gene smyd5 exhibited significant promoter hyper-methylation and increased expression in Cu2+ stressed embryos, and the ectopic expression of smyd5 in zebrafish embryos also induced the myofibrils specification defects as those observed in Cu2+ stressed embryos. Moreover, Cu2+ was shown to suppress myofibrils specification and smyd1b promoter transcriptional activity directly independent of the integral function of copper transporter cox17 and atp7b. All these data may shed light on the linkage of unbalanced copper homeostasis with specific gene promoter methylation and epigenetic histone protein modification as well as the resultant signaling transduction and the myofibrillogenesis defects.
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Affiliation(s)
- XiaoDong Jin
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - WenYe Liu
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Jing Miao
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - ZhiPeng Tai
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - LingYa Li
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - PengPeng Guan
- College of Informatics, Agricultural Bioinformatics Key Laboratory of Hubei Province, Hubei Engineering Technology Research Center of Agricultural Big Data, Huazhong Agricultural University, Wuhan, China
| | - Jing-Xia Liu
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
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Kurome M, Baehr A, Simmet K, Jemiller EM, Egerer S, Dahlhoff M, Zakhartchenko V, Nagashima H, Klymiuk N, Kessler B, Wolf E. Targeting αGal epitopes for multi-species embryo immunosurgery. Reprod Fertil Dev 2018; 31:820-826. [PMID: 30384878 DOI: 10.1071/rd18120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 09/20/2018] [Indexed: 11/23/2022] Open
Abstract
Immunosurgical isolation of the inner cell mass (ICM) from blastocysts is based on complement-mediated lysis of antibody-coated trophectoderm (TE) cells. Conventionally, anti-species antisera, containing antibodies against multiple undefined TE-cell epitopes, have been used as the antibody source. We previously generated α-1,3-galactosyltransferase deficient (GTKO) pigs to prevent hyperacute rejection of pig-to-primate xenotransplants. Since GTKO pigs lack galactosyl-α-1,3-galactose (αGal) but are exposed to this antigen (e.g. αGal on gut bacteria), they produce anti-αGal antibodies. In this study, we examined whether serum from GTKO pigs could be used as a novel antibody source for multi-species embryo immunosurgery. Mouse, rabbit, pig and cattle blastocysts were used for the experiment. Expression of αGal epitopes on the surface of TE cells was detected in blastocysts of all species tested. GTKO pig serum contained sufficient anti-αGal antibodies to induce complement-mediated lysis of TE cells in blastocysts from all species investigated. Intact ICMs could be successfully recovered and the majority showed the desired level of purity. Our study demonstrates that GTKO pig serum is a reliable and effective source of antibodies targeting the αGal epitopes of TE cells for multi-species embryo immunosurgery.
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Affiliation(s)
- Mayuko Kurome
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Andrea Baehr
- Klinikum Rechts der Isar, Innere Medizin I, TU Munich, Ismaninger strasse 22, 81675 Munich, Germany
| | - Kilian Simmet
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Eva-Maria Jemiller
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Stefanie Egerer
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Maik Dahlhoff
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Valeri Zakhartchenko
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Hiroshi Nagashima
- Meiji University International Institute for Bio-Resource Research, 1-1-1 Higashimita, Tama, Kawasaki, Kanagawa 214-8571, Japan
| | - Nikolai Klymiuk
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Barbara Kessler
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
| | - Eckhard Wolf
- Chair for Molecular Animal Breeding and Biotechnology, Centre for Innovative Medical Models (CiMM), LMU Munich, Hacker strasse 27, 85764 Oberschleissheim, Germany
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3
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Bonnet-Garnier A, Kiêu K, Aguirre-Lavin T, Tar K, Flores P, Liu Z, Peynot N, Chebrout M, Dinnyés A, Duranthon V, Beaujean N. Three-dimensional analysis of nuclear heterochromatin distribution during early development in the rabbit. Chromosoma 2018; 127:387-403. [PMID: 29666907 PMCID: PMC6096579 DOI: 10.1007/s00412-018-0671-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 03/06/2018] [Accepted: 04/03/2018] [Indexed: 01/29/2023]
Abstract
Changes to the spatial organization of specific chromatin domains such as constitutive heterochromatin have been studied extensively in somatic cells. During early embryonic development, drastic epigenetic reprogramming of both the maternal and paternal genomes, followed by chromatin remodeling at the time of embryonic genome activation (EGA), have been observed in the mouse. Very few studies have been performed in other mammalian species (human, bovine, or rabbit) and the data are far from complete. During this work, we studied the three-dimensional organization of pericentromeric regions during the preimplantation period in the rabbit using specific techniques (3D-FISH) and tools (semi-automated image analysis). We observed that the pericentromeric regions (identified with specific probes for Rsat I and Rsat II genomic sequences) changed their shapes (from pearl necklaces to clusters), their nuclear localizations (from central to peripheral), as from the 4-cell stage. This reorganization goes along with histone modification changes and reduced amount of interactions with nucleolar precursor body surface. Altogether, our results suggest that the 4-cell stage may be a crucial window for events necessary before major EGA, which occurs during the 8-cell stage in the rabbit.
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Affiliation(s)
| | - Kiên Kiêu
- UR341 MaIAGE, INRA, Université Paris Saclay, 78350 Jouy-en-Josas, France
| | | | - Krisztina Tar
- Present Address: Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- BioTalentum Ltd., Aulich Lajos str. 26, Gödöllő, 2100 Hungary
| | - Pierre Flores
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
| | - Zichuan Liu
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
- Present Address: Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101 China
| | - Nathalie Peynot
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
| | - Martine Chebrout
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
| | - András Dinnyés
- BioTalentum Ltd., Aulich Lajos str. 26, Gödöllő, 2100 Hungary
| | | | - Nathalie Beaujean
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
- Present Address: Univ Lyon, Université Claude Bernard Lyon 1, Inserm, INRA, Stem Cell and Brain Research Institute U1208, USC1361, 69500 Bron, France
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4
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Zhang J, Qu P, Zhou C, Liu X, Ma X, Wang M, Wang Y, Su J, Liu J, Zhang Y. MicroRNA-125b is a key epigenetic regulatory factor that promotes nuclear transfer reprogramming. J Biol Chem 2017; 292:15916-15926. [PMID: 28794155 PMCID: PMC5612121 DOI: 10.1074/jbc.m117.796771] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/14/2017] [Indexed: 12/21/2022] Open
Abstract
Somatic cell nuclear transfer (SCNT)-mediated reprogramming is a rapid, efficient, and sophisticated process that reprograms differentiated somatic cells to a pluripotent state. However, many factors in this elaborate reprogramming process remain largely unknown. Here, we report that the microRNA (miR) miR-125b is an important component of SCNT-mediated reprogramming. Luciferase reporter assay, quantitative PCR, and Western blotting demonstrated that miR-125b directly binds the 3'-untranslated region of SUV39H1, encoding the histone-lysine N-methyltransferase SUV39H1, to down-regulate histone H3 lysine-9 tri-methylation (H3K9me3) in SCNT embryos. Furthermore, the miR-125b/SUV39H1 interaction induced loss of SUV39H1-mediated H3K9me3, caused heterochromatin relaxation, and promoted the development of SCNT embryos. Transcriptome analyses of SCNT blastomeres indicated that HNF1 homeobox B (HNF1B), a gene encoding a transcription factor downstream of and controlled by the miR-125b/SUV39H1 axis, is important for conferring developmental competence on preimplantation embryos. We conclude that miR-125b promotes SCNT-mediated nuclear reprogramming by targeting SUV39H1 to decrease the deposition of repressive H3K9me3 modifications.
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Affiliation(s)
- Jingcheng Zhang
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Pengxiang Qu
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Chuan Zhou
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xin Liu
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaonan Ma
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Mengyun Wang
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yongsheng Wang
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jianmin Su
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jun Liu
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yong Zhang
- From the Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
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5
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Popken J, Koehler D, Brero A, Wuensch A, Guengoer T, Thormeyer T, Wolf E, Cremer T, Zakhartchenko V. Positional changes of a pluripotency marker gene during structural reorganization of fibroblast nuclei in cloned early bovine embryos. Nucleus 2015; 5:542-54. [PMID: 25495180 PMCID: PMC4615807 DOI: 10.4161/19491034.2014.970107] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cloned bovine preimplantation embryos were generated by somatic cell nuclear transfer (SCNT) of bovine fetal fibroblasts with a silent copy of the pluripotency reporter gene GOF, integrated at a single site of a chromosome 13. GOF combines the regulatory Oct4/Pou5f1 sequence with the coding sequence for EGFP. EGFP expression served as a marker for pluripotency gene activation and was consistently detected in preimplantation embryos with 9 and more cells. Three-dimensional radial nuclear positions of GOF, its carrier chromosome territory and non-carrier homolog were measured in nuclei of fibroblasts, and of day 2 and day 4 embryos, carrying 2 to 9 and 15 to 22 cells, respectively. We tested, whether transcriptional activation was correlated with repositioning of GOF toward the nuclear interior either with a corresponding movement of its carrier chromosome territory 13 or via the formation of a giant chromatin loop. A significant shift of GOF away from the nuclear periphery was observed in day 2 embryos together with both carrier and non-carrier chromosome territories. At day 4, GOF, its carrier chromosome territory 13 and the non-carrier homolog had moved back toward the nuclear periphery. Similar movements of both chromosome territories ruled out a specific GOF effect. Pluripotency gene activation was preceded by a transient, radial shift of GOF toward the nuclear interior. The persistent co-localization of GOF with its carrier chromosome territory rules out the formation of a giant chromatin loop during GOF activation.
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Key Words
- (bovine) preimplantation embryos, chromosome territories, nuclear architecture, nuclear reprogramming, pluripotency gene activation, somatic cell nuclear transfer
- BFF, bovine fetal fibroblasts; BTA, Bos taurus; CLSM, confocal laser scanning microscopy; CT, chromosome territory; eADS, enhanced absolute 3D distances to surfaces; IVF, in vitro fertilization; MGA, major embryonic genome activation; GOF, Oct4/Pou5f1-EGF
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Affiliation(s)
- Jens Popken
- a Division of Anthropology and Human Genetics Biocenter ; LMU Munich ; Martinsried , Germany
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6
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Popken J, Brero A, Koehler D, Schmid VJ, Strauss A, Wuensch A, Guengoer T, Graf A, Krebs S, Blum H, Zakhartchenko V, Wolf E, Cremer T. Reprogramming of fibroblast nuclei in cloned bovine embryos involves major structural remodeling with both striking similarities and differences to nuclear phenotypes of in vitro fertilized embryos. Nucleus 2015; 5:555-89. [PMID: 25482066 PMCID: PMC4615760 DOI: 10.4161/19491034.2014.979712] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Nuclear landscapes were studied during preimplantation development of bovine embryos, generated either by in vitro fertilization (IVF), or generated as cloned embryos by somatic cell nuclear transfer (SCNT) of bovine fetal fibroblasts, using 3-dimensional confocal laser scanning microscopy (3D-CLSM) and structured illumination microscopy (3D-SIM). Nuclear landscapes of IVF and SCNT embryonic nuclei were compared with each other and with fibroblast nuclei. We demonstrate that reprogramming of fibroblast nuclei in cloned embryos requires changes of their landscapes similar to nuclei of IVF embryos. On the way toward the 8-cell stage, where major genome activation occurs, a major lacuna, enriched with splicing factors, was formed in the nuclear interior and chromosome territories (CTs) were shifted toward the nuclear periphery. During further development the major lacuna disappeared and CTs were redistributed throughout the nuclear interior forming a contiguous higher order chromatin network. At all stages of development CTs of IVF and SCNT embryonic nuclei were built up from chromatin domain clusters (CDCs) pervaded by interchromatin compartment (IC) channels. Quantitative analyses revealed a highly significant enrichment of RNA polymerase II and H3K4me3, a marker for transcriptionally competent chromatin, at the periphery of CDCs. In contrast, H3K9me3, a marker for silent chromatin, was enriched in the more compacted interior of CDCs. Despite these striking similarities, we also detected major differences between nuclear landscapes of IVF and cloned embryos. Possible implications of these differences for the developmental potential of cloned animals remain to be investigated. We present a model, which integrates generally applicable structural and functional features of the nuclear landscape.
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Key Words
- 3D-CLSM, 3-dimensional confocal laser scanning microscopy
- 3D-SIM, 3-dimensional structured illumination microscopy
- B23, nucleophosmin B23
- BTA, Bos taurus
- CDC, chromatin domain cluster
- CT, chromosome territory
- EM, electron microscopy
- ENC, embryonic nuclei with conventional nuclear architecture
- ENP, embryonic nuclei with peripheral CT distribution
- H3K4me3
- H3K4me3, histone H3 with tri-methylated lysine 4
- H3K9me3
- H3K9me3, histone H3 with tri-methylated lysine 9
- H3S10p, histone H3 with phosphorylated serine 10
- IC, interchromatin compartment
- IVF, in vitro fertilization
- MCB, major chromatin body
- PR, perichromatin region
- RNA polymerase II
- RNA polymerase II-S2p, RNA polymerase II with phosphorylated serine 2 of its CTD domain
- RNA polymerase II-S5p, RNA polymerase II with phosphorylated serine 5 of its CTD domain
- SC-35, splicing factor SC-35
- SCNT, somatic cell nuclear transfer.
- bovine preimplantation development
- chromatin domain
- chromosome territory
- embryonic genome activation
- in vitro fertilization (IVF)
- interchromatin compartment
- major EGA, major embryonic genome activation
- somatic cell nuclear transfer (SCNT)
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Affiliation(s)
- Jens Popken
- a Division of Anthropology and Human Genetics ; Biocenter; LMU Munich ; Munich , Germany
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Wen D, Banaszynski LA, Rosenwaks Z, Allis CD, Rafii S. H3.3 replacement facilitates epigenetic reprogramming of donor nuclei in somatic cell nuclear transfer embryos. Nucleus 2015; 5:369-75. [PMID: 25482190 DOI: 10.4161/nucl.36231] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Transfer of a somatic nucleus into an enucleated oocyte is the most efficient approach for somatic cell reprogramming. While this process is known to involve extensive chromatin remodeling of the donor nucleus, the maternal factors responsible and the underlying chromatin-based mechanisms remain largely unknown. Here we discuss our recent findings demonstrating that the histone variant H3.3 plays an essential role in reprogramming and is required for reactivation of key pluripotency genes in somatic cell nuclear transfer (SCNT) embryos. Maternal-derived H3.3 replaces H3 in the donor nucleus shortly after oocyte activation, with the amount of replacement directly related to the differentiation status of the donor nucleus in SCNT embryos. We provide additional evidence to suggest that de novo synthesized H3.3 replaces histone H3 carrying repressive modifications in the donor nuclei of SCNT embryos, and hypothesize that replacement may occur at specific loci that must be reprogrammed for gene reactivation.
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Affiliation(s)
- Duancheng Wen
- a Ronald O. Perleman and Claudia Cohen Center for Reproductive Medicine; New York, NY USA
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8
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Histone variant H3.3 is an essential maternal factor for oocyte reprogramming. Proc Natl Acad Sci U S A 2014; 111:7325-30. [PMID: 24799717 DOI: 10.1073/pnas.1406389111] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Mature oocyte cytoplasm can reprogram somatic cell nuclei to the pluripotent state through a series of sequential events including protein exchange between the donor nucleus and ooplasm, chromatin remodeling, and pluripotency gene reactivation. Maternal factors that are responsible for this reprogramming process remain largely unidentified. Here, we demonstrate that knockdown of histone variant H3.3 in mouse oocytes results in compromised reprogramming and down-regulation of key pluripotency genes; and this compromised reprogramming for developmental potentials and transcription of pluripotency genes can be rescued by injecting exogenous H3.3 mRNA, but not H3.2 mRNA, into oocytes in somatic cell nuclear transfer embryos. We show that maternal H3.3, and not H3.3 in the donor nucleus, is essential for successful reprogramming of somatic cell nucleus into the pluripotent state. Furthermore, H3.3 is involved in this reprogramming process by remodeling the donor nuclear chromatin through replacement of donor nucleus-derived H3 with de novo synthesized maternal H3.3 protein. Our study shows that H3.3 is a crucial maternal factor for oocyte reprogramming and provides a practical model to directly dissect the oocyte for its reprogramming capacity.
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Li Z, He X, Chen L, Shi J, Zhou R, Xu W, Liu D, Wu Z. Bone marrow mesenchymal stem cells are an attractive donor cell type for production of cloned pigs as well as genetically modified cloned pigs by somatic cell nuclear transfer. Cell Reprogram 2013; 15:459-70. [PMID: 24033142 DOI: 10.1089/cell.2013.0010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The somatic cell nuclear transfer (SCNT) technique has been widely applied to clone pigs or to produce genetically modified pigs. Currently, this technique relies mainly on using terminally differentiated fibroblasts as donor cells. To improve cloning efficiency, only partially differentiated multipotent mesenchymal stem cells (MSCs), thought to be more easily reprogrammed to a pluripotent state, have been used as nuclear donors in pig SCNT. Although in vitro-cultured embryos cloned from porcine MSCs (MSCs-embryos) were shown to have higher preimplantation developmental ability than cloned embryos reconstructed from fibroblasts (Fs-embryos), the difference in in vivo full-term developmental rate between porcine MSCs-embryos and Fs-embryos has not been investigated so far. In this study, we demonstrated that blastocyst total cell number and full-term survival abilities of MSCs-embryos were significantly higher than those of Fs-embryos cloned from the same donor pig. The enhanced developmental potential of MSCs-embryos may be associated with their nuclear donors' DNA methylation profile, because we found that the methylation level of imprinting genes and repeat sequences differed between MSCs and fibroblasts. In addition, we showed that use of transgenic porcine MSCs generated from transgene plasmid transfection as donor cells for SCNT can produce live transgenic cloned pigs. These results strongly suggest that porcine bone marrow MSCs are a desirable donor cell type for production of cloned pigs and genetically modified cloned pigs via SCNT.
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Affiliation(s)
- Zicong Li
- 1 Department of Animal Genetics, Breeding and Reproduction, South China Agricultural University , Guangzhou, Guangdong, P. R. China, 510642
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Heo YT, Lee SH, Kim T, Kim NH, Lee HT. Production of somatic chimera chicks by injection of bone marrow cells into recipient blastoderms. J Reprod Dev 2012; 58:316-22. [PMID: 22343399 DOI: 10.1262/jrd.11-119a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Several types of cells, including blastoderm cells, primordial germ cells, and embryonic germ cells were injected into early-stage recipient embryos to produce chimera avians and to gain insights into cell development. However, a limited number of studies of avian adult stem cells have also been conducted. This study is, to the best of our knowledge, the first to evaluate chicken bone marrow cells' (chBMC) ability to differentiate into multiple cell lineages and capability to generate chimera chicks. We induced random differentiation of chBMCs in vitro and injected immunologically selected pluripotent cells in chBMCs into the blastoderms of recipient eggs. The multipotency of BMCs from the barred Plymouth rock (BPR) was confirmed via AP staining, RT-PCR, immunocytochemistry, and FACS using specific markers, such as Oct-4 and SSEA-1, 3 and 4. Isolated chBMCs were found to be able to induce in vitro differentiation to multiple cell lineages. Approximately 5,000 chBMCs were injected into the blastoderms of white leghorn (WL) recipients and proved able to contribute to the generation of somatic chimera chicks with a frequency of 2.7% (2 of 73). Confirmation of chimerism in hatched chicks was achieved via PCR analysis using D-loop-specific primers of BPR and WL. Our study demonstrated the successful production of chimera chicks using chBMC. Therefore, we propose that the use of adult chBMCs may constitute a new possible approach to the production of chimera poultry, and may provide helpful studies in avian developmental biology.
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Affiliation(s)
- Young Tae Heo
- Department of Animal Science, Chungbuk National University, Chungbuk, Korea
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11
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Teven CM, Liu X, Hu N, Tang N, Kim SH, Huang E, Yang K, Li M, Gao JL, Liu H, Natale RB, Luther G, Luo Q, Wang L, Rames R, Bi Y, Luo J, Luu HH, Haydon RC, Reid RR, He TC. Epigenetic regulation of mesenchymal stem cells: a focus on osteogenic and adipogenic differentiation. Stem Cells Int 2011; 2011:201371. [PMID: 21772852 PMCID: PMC3137957 DOI: 10.4061/2011/201371] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 04/27/2011] [Indexed: 12/20/2022] Open
Abstract
Stem cells are characterized by their capability to self-renew and terminally differentiate into multiple cell types. Somatic or adult stem cells have a finite self-renewal capacity and are lineage-restricted. The use of adult stem cells for therapeutic purposes has been a topic of recent interest given the ethical considerations associated with embryonic stem (ES) cells. Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into osteogenic, adipogenic, chondrogenic, or myogenic lineages. Owing to their ease of isolation and unique characteristics, MSCs have been widely regarded as potential candidates for tissue engineering and repair. While various signaling molecules important to MSC differentiation have been identified, our complete understanding of this process is lacking. Recent investigations focused on the role of epigenetic regulation in lineage-specific differentiation of MSCs have shown that unique patterns of DNA methylation and histone modifications play an important role in the induction of MSC differentiation toward specific lineages. Nevertheless, MSC epigenetic profiles reflect a more restricted differentiation potential as compared to ES cells. Here we review the effect of epigenetic modifications on MSC multipotency and differentiation, with a focus on osteogenic and adipogenic differentiation. We also highlight clinical applications of MSC epigenetics and nuclear reprogramming.
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Affiliation(s)
- Chad M Teven
- Molecular Oncology Laboratory, Department of Surgery, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637, USA
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