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Neira JA, Conrad JV, Rusteika M, Chu LF. The progress of induced pluripotent stem cells derived from pigs: a mini review of recent advances. Front Cell Dev Biol 2024; 12:1371240. [PMID: 38979033 PMCID: PMC11228285 DOI: 10.3389/fcell.2024.1371240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/10/2024] [Indexed: 07/10/2024] Open
Abstract
Pigs (Sus scrofa) are widely acknowledged as an important large mammalian animal model due to their similarity to human physiology, genetics, and immunology. Leveraging the full potential of this model presents significant opportunities for major advancements in the fields of comparative biology, disease modeling, and regenerative medicine. Thus, the derivation of pluripotent stem cells from this species can offer new tools for disease modeling and serve as a stepping stone to test future autologous or allogeneic cell-based therapies. Over the past few decades, great progress has been made in establishing porcine pluripotent stem cells (pPSCs), including embryonic stem cells (pESCs) derived from pre- and peri-implantation embryos, and porcine induced pluripotent stem cells (piPSCs) using a variety of cellular reprogramming strategies. However, the stabilization of pPSCs was not as straightforward as directly applying the culture conditions developed and optimized for murine or primate PSCs. Therefore, it has historically been challenging to establish stable pPSC lines that could pass stringent pluripotency tests. Here, we review recent advances in the establishment of stable porcine PSCs. We focus on the evolving derivation methods that eventually led to the establishment of pESCs and transgene-free piPSCs, as well as current challenges and opportunities in this rapidly advancing field.
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Affiliation(s)
- Jaime A Neira
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
- Reproductive Biology and Regenerative Medicine Research Group, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, Calgary, AB, Canada
| | - J Vanessa Conrad
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
- Reproductive Biology and Regenerative Medicine Research Group, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, Calgary, AB, Canada
| | - Margaret Rusteika
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
- Reproductive Biology and Regenerative Medicine Research Group, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, Calgary, AB, Canada
- Biomedical Engineering Graduate Program, University of Calgary, Calgary, AB, Canada
| | - Li-Fang Chu
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
- Reproductive Biology and Regenerative Medicine Research Group, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, Calgary, AB, Canada
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2
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Ruan D, Xuan Y, Tam TTKK, Li Z, Wang X, Xu S, Herrmann D, Niemann H, Lai L, Gao X, Nowak-Imialek M, Liu P. An optimized culture system for efficient derivation of porcine expanded potential stem cells from preimplantation embryos and by reprogramming somatic cells. Nat Protoc 2024; 19:1710-1749. [PMID: 38509352 DOI: 10.1038/s41596-024-00958-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 12/08/2023] [Indexed: 03/22/2024]
Abstract
Pigs share anatomical and physiological traits with humans and can serve as a large-animal model for translational medicine. Bona fide porcine pluripotent stem cells (PSCs) could facilitate testing cell and drug therapies. Agriculture and biotechnology may benefit from the ability to produce immune cells for studying animal infectious diseases and to readily edit the porcine genome in stem cells. Isolating porcine PSCs from preimplantation embryos has been intensively attempted over the past decades. We previously reported the derivation of expanded potential stem cells (EPSCs) from preimplantation embryos and by reprogramming somatic cells of multiple mammalian species, including pigs. Porcine EPSCs (pEPSCs) self-renew indefinitely, differentiate into embryonic and extra-embryonic lineages, and permit precision genome editing. Here we present a highly reproducible experimental procedure and data of an optimized and robust porcine EPSC culture system and its use in deriving new pEPSC lines from preimplantation embryos and reprogrammed somatic cells. No particular expertise is required for the protocols, which take ~4-6 weeks to complete. Importantly, we successfully established pEPSC lines from both in vitro fertilized and somatic cell nuclear transfer-derived embryos. These new pEPSC lines proliferated robustly over long-term passaging and were amenable to both simple indels and precision genome editing, with up to 100% targeting efficiency. The pEPSCs differentiated into embryonic cell lineages in vitro and teratomas in vivo, and into porcine trophoblast stem cells in human trophoblast stem cell medium. We show here that pEPSCs have unique epigenetic features, particularly H3K27me3 levels substantially lower than fibroblasts.
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Affiliation(s)
- Degong Ruan
- Center for Translational Stem Cell Biology, Science Park, Sha Tin, Hong Kong, China
- Shenzhen Key Laboratory of Fertility Regulation, the University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Yiyi Xuan
- Stem Cell & Regenerative Medicine Consortium, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Timothy Theodore Ka Ki Tam
- Stem Cell & Regenerative Medicine Consortium, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - ZhuoXuan Li
- Stem Cell & Regenerative Medicine Consortium, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Xiao Wang
- Stem Cell & Regenerative Medicine Consortium, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Shao Xu
- Center for Translational Stem Cell Biology, Science Park, Sha Tin, Hong Kong, China
| | - Doris Herrmann
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institute (FLI), Mariensee, Neustadt, Germany
| | - Heiner Niemann
- Hannover Medical School (MHH), Clinic for Gastroenterology, Hepatology and Endocrinology, Hannover, Germany
| | - Liangxue Lai
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Xuefei Gao
- Department of Physiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
| | - Monika Nowak-Imialek
- German Center for Cardiovascular Research (DZHK), Munich Heart Alliance, Munich, Germany.
- First Department of Medicine, Cardiology, Klinikum rechts der Isar-Technical University of Munich, Munich, Germany.
| | - Pentao Liu
- Center for Translational Stem Cell Biology, Science Park, Sha Tin, Hong Kong, China.
- Shenzhen Key Laboratory of Fertility Regulation, the University of Hong Kong-Shenzhen Hospital, Shenzhen, China.
- Stem Cell & Regenerative Medicine Consortium, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pok Fu Lam, Hong Kong, China.
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3
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Xuan Y, Petersen B, Liu P. Human and Pig Pluripotent Stem Cells: From Cellular Products to Organogenesis and Beyond. Cells 2023; 12:2075. [PMID: 37626885 PMCID: PMC10453631 DOI: 10.3390/cells12162075] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Pluripotent stem cells (PSCs) are important for studying development and hold great promise in regenerative medicine due to their ability to differentiate into various cell types. In this review, we comprehensively discuss the potential applications of both human and pig PSCs and provide an overview of the current progress and challenges in this field. In addition to exploring the therapeutic uses of PSC-derived cellular products, we also shed light on their significance in the study of interspecies chimeras, which has led to the creation of transplantable human or humanized pig organs. Moreover, we emphasize the importance of pig PSCs as an ideal cell source for genetic engineering, facilitating the development of genetically modified pigs for pig-to-human xenotransplantation. Despite the achievements that have been made, further investigations and refinement of PSC technologies are necessary to unlock their full potential in regenerative medicine and effectively address critical healthcare challenges.
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Affiliation(s)
- Yiyi Xuan
- Stem Cell & Regenerative Medicine Consortium, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China;
| | - Björn Petersen
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Mariensee, 31535 Neustadt am Rübenberge, Germany;
| | - Pentao Liu
- Stem Cell & Regenerative Medicine Consortium, School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China;
- Center for Translational Stem Cell Biology, Hong Kong, China
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4
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Widerspick L, Steffen JF, Tappe D, Muñoz-Fontela C. Animal Model Alternatives in Filovirus and Bornavirus Research. Viruses 2023; 15:158. [PMID: 36680198 PMCID: PMC9863967 DOI: 10.3390/v15010158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
The order Mononegavirales contains a variety of highly pathogenic viruses that may infect humans, including the families Filoviridae, Bornaviridae, Paramyxoviridae, and Rhabodoviridae. Animal models have historically been important to study virus pathogenicity and to develop medical countermeasures. As these have inherent shortcomings, the rise of microphysiological systems and organoids able to recapitulate hallmarks of the diseases caused by these viruses may have enormous potential to add to or partially replace animal modeling in the future. Indeed, microphysiological systems and organoids are already used in the pharmaceutical R&D pipeline because they are prefigured to overcome the translational gap between model systems and clinical studies. Moreover, they may serve to alleviate ethical concerns related to animal research. In this review, we discuss the value of animal model alternatives in human pathogenic filovirus and bornavirus research. The current animal models and their limitations are presented followed by an overview of existing alternatives, such as organoids and microphysiological systems, which might help answering open research questions.
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Affiliation(s)
- Lina Widerspick
- Bernhard-Nocht-Institute for Tropical Medicine, 20359 Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Luebeck-Borstel-Riems, 38124 Braunschweig, Germany
| | | | - Dennis Tappe
- Bernhard-Nocht-Institute for Tropical Medicine, 20359 Hamburg, Germany
- National Reference Center for Tropical Pathogens, Bernhard-Nocht-Institute for Tropical Medicine, 20359 Hamburg, Germany
| | - César Muñoz-Fontela
- Bernhard-Nocht-Institute for Tropical Medicine, 20359 Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Luebeck-Borstel-Riems, 38124 Braunschweig, Germany
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Jiao H, Lee MS, Sivapatham A, Leiferman EM, Li WJ. Epigenetic regulation of BAF60A determines efficiency of miniature swine iPSC generation. Sci Rep 2022; 12:9039. [PMID: 35641537 PMCID: PMC9156668 DOI: 10.1038/s41598-022-12919-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 05/18/2022] [Indexed: 02/08/2023] Open
Abstract
Miniature pigs are an ideal animal model for translational research to evaluate stem cell therapies and regenerative applications. While the derivation of induced pluripotent stem cells (iPSCs) from miniature pigs has been demonstrated, there is still a lack of a reliable method to generate and maintain miniature pig iPSCs. In this study, we derived iPSCs from fibroblasts of Wisconsin miniature swine (WMS), Yucatan miniature swine (YMS), and Göttingen minipigs (GM) using our culture medium. By comparing cells of the different pig breeds, we found that YMS fibroblasts were more efficiently reprogrammed into iPSCs, forming colonies with well-defined borders, than WMS and GM fibroblasts. We also demonstrated that YMS iPSC lines with a normal pig karyotype gave rise to cells of the three germ layers in vitro and in vivo. Mesenchymal stromal cells expressing phenotypic characteristics were derived from established iPSC lines as an example of potential applications. In addition, we found that the expression level of the switch/sucrose nonfermentable component BAF60A regulated by STAT3 signaling determined the efficiency of pig iPSC generation. The findings of this study provide insight into the underlying mechanism controlling the reprogramming efficiency of miniature pig cells to develop a viable strategy to enhance the generation of iPSCs for biomedical research.
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Affiliation(s)
- Hongli Jiao
- Laboratory of Musculoskeletal Biology and Regenerative Medicine, Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1111 Highland Ave, WIMR 5051, Madison, WI, 53705, USA
| | - Ming-Song Lee
- Laboratory of Musculoskeletal Biology and Regenerative Medicine, Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1111 Highland Ave, WIMR 5051, Madison, WI, 53705, USA
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Athillesh Sivapatham
- Laboratory of Musculoskeletal Biology and Regenerative Medicine, Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1111 Highland Ave, WIMR 5051, Madison, WI, 53705, USA
| | - Ellen M Leiferman
- Laboratory of Musculoskeletal Biology and Regenerative Medicine, Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1111 Highland Ave, WIMR 5051, Madison, WI, 53705, USA
| | - Wan-Ju Li
- Laboratory of Musculoskeletal Biology and Regenerative Medicine, Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1111 Highland Ave, WIMR 5051, Madison, WI, 53705, USA.
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.
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6
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Pieri NCG, de Souza AF, Botigelli RC, Pessôa LVDF, Recchia K, Machado LS, Glória MH, de Castro RVG, Leal DF, Fantinato Neto P, Martins SMMK, Dos Santos Martins D, Bressan FF, de Andrade AFC. Porcine Primordial Germ Cell-Like Cells Generated from Induced Pluripotent Stem Cells Under Different Culture Conditions. Stem Cell Rev Rep 2021; 18:1639-1656. [PMID: 34115317 DOI: 10.1007/s12015-021-10198-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2021] [Indexed: 12/15/2022]
Abstract
Culture conditions regulate the process of pluripotency acquisition and self-renewal. This study aimed to analyse the influence of the in vitro environment on the induction of porcine induced pluripotent stem cell (piPSCs) differentiation into primordial germ cell-like cells (pPGCLCs). piPSC culture with different supplementation strategies (LIF, bFGF, or LIF plus bFGF) promoted heterogeneous phenotypic profiles. Continuous bFGF supplementation during piPSCs culture was beneficial to support a pluripotent state and the differentiation of piPSCs into pPGCLCs. The pPGCLCs were positive for the gene and protein expression of pluripotent and germinative markers. This study can provide a suitable in vitro model for use in translational studies and to help answer numerous remaining questions about germ cells.
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Affiliation(s)
- Naira Caroline Godoy Pieri
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, SP, Brazil.
| | - Aline Fernanda de Souza
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, SP, Pirassununga, Brazil
| | - Ramon Cesar Botigelli
- Department of Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | | | - Kaiana Recchia
- Department of Surgery, Faculty of Veterinary Medicine and Animal Sciences, University of Sao Paulo, São Paulo, SP, Brazil
| | - Lucas Simões Machado
- Department of Biochemistry, Paulista School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo/SP, Brazil
| | - Mayra Hirakawa Glória
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, SP, Pirassununga, Brazil
| | - Raquel Vasconcelos Guimarães de Castro
- Department of Preventive Veterinary Medicine and Animal Reproduction, Faculty of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal, SP, Brazil
| | - Diego Feitosa Leal
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, SP, Brazil
| | - Paulo Fantinato Neto
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, SP, Pirassununga, Brazil
| | | | - Daniele Dos Santos Martins
- Department of Animal Science, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil
| | - Fabiana Fernandes Bressan
- Department of Veterinary Medicine, School of Animal Sciences and Food Engineering, SP, Pirassununga, Brazil
| | - André Furugen Cesar de Andrade
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, SP, Brazil
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Krasic J, Skara L, Ulamec M, Katusic Bojanac A, Dabelic S, Bulic-Jakus F, Jezek D, Sincic N. Teratoma Growth Retardation by HDACi Treatment of the Tumor Embryonal Source. Cancers (Basel) 2020; 12:cancers12113416. [PMID: 33217978 PMCID: PMC7698704 DOI: 10.3390/cancers12113416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/09/2020] [Accepted: 11/16/2020] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Testicular germ cell tumors are the most common neoplasms in young male populations, with a rising incidence. Among them, teratomas may often be very aggressive and resistant to therapy. Our aim was to investigate the impact of two potential anti-tumor epigenetic drugs (Valproate and Trichostatin A) in a mammalian model of teratoma development from an early trilaminar mouse embryo. Both drugs applied to the embryonic tissue had a significant negative impact on the teratoma growth in a three-dimensional in vitro culture. However, Trichostatin A did not diminish some potentially dangerous features of teratomas in contrast to Valproate. This research is an original contribution to the basic knowledge of the origin and development of teratomas. Such knowledge is necessary for envisioning therapeutic strategies against human testicular tumors. Abstract Among testicular germ cell tumors, teratomas may often be very aggressive and therapy-resistant. Our aim was to investigate the impact of histone deacetylase inhibitors (HDACi) on the in vitro growth of experimental mouse teratoma by treating their embryonic source, the embryo-proper, composed only of the three germ layers. The growth of teratomas was measured for seven days, and histopathological analysis, IHC/morphometry quantification, gene enrichment analysis, and qPCR analysis on a selected panel of pluripotency and early differentiation genes followed. For the first time, within teratomas, we histopathologically assessed the undifferentiated component containing cancer stem cell-like cells (CSCLCs) and differentiated components containing numerous lymphocytes. Mitotic indices were higher than apoptotic indices in both components. Both HDACi treatments of the embryos-proper significantly reduced teratoma growth, although this could be related neither to apoptosis nor proliferation. Trichostatin A increased the amount of CSCLCs, and upregulated the mRNA expression of pluripotency/stemness genes as well as differentiation genes, e.g., T and Eomes. Valproate decreased the amount of CSCLCs, and downregulated the expressions of pluripotency/stemness and differentiation genes. In conclusion, both HDACi treatments diminished the inherent tumorigenic growth potential of the tumor embryonal source, although Trichostatin A did not diminish the potentially dangerous expression of cancer-related genes and the amount of CSCLC.
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Affiliation(s)
- Jure Krasic
- Department of Medical Biology, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia; (J.K.); (L.S.); (A.K.B.); (F.B.-J.)
- Scientific Group for Research on Epigenetic Biomarkers, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
| | - Lucija Skara
- Department of Medical Biology, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia; (J.K.); (L.S.); (A.K.B.); (F.B.-J.)
- Scientific Group for Research on Epigenetic Biomarkers, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
| | - Monika Ulamec
- Scientific Group for Research on Epigenetic Biomarkers, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
- Ljudevit Jurak Clinical Department of Pathology and Cytology, Sestre Milosrdnice University Hospital Center, 10 000 Zagreb, Croatia
- Department of Pathology, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - Ana Katusic Bojanac
- Department of Medical Biology, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia; (J.K.); (L.S.); (A.K.B.); (F.B.-J.)
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
| | - Sanja Dabelic
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy and Biochemistry, University of Zagreb, 10 000 Zagreb, Croatia;
| | - Floriana Bulic-Jakus
- Department of Medical Biology, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia; (J.K.); (L.S.); (A.K.B.); (F.B.-J.)
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
| | - Davor Jezek
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
- Department of Histology and Embryology, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia
| | - Nino Sincic
- Department of Medical Biology, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia; (J.K.); (L.S.); (A.K.B.); (F.B.-J.)
- Scientific Group for Research on Epigenetic Biomarkers, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
- Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, 10 000 Zagreb, Croatia;
- Correspondence: ; Tel.: +385-1-45-66-806; Fax: +385-45-960-199
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Pessôa LVDF, Bressan FF, Freude KK. Induced pluripotent stem cells throughout the animal kingdom: Availability and applications. World J Stem Cells 2019; 11:491-505. [PMID: 31523369 PMCID: PMC6716087 DOI: 10.4252/wjsc.v11.i8.491] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/18/2019] [Accepted: 06/20/2019] [Indexed: 02/06/2023] Open
Abstract
Up until the mid 2000s, the capacity to generate every cell of an organism was exclusive to embryonic stem cells. In 2006, researchers Takahashi and Yamanaka developed an alternative method of generating embryonic-like stem cells from adult cells, which they coined induced pluripotent stem cells (iPSCs). Such iPSCs possess most of the advantages of embryonic stem cells without the ethical stigma associated with derivation of the latter. The possibility of generating “custom-made” pluripotent cells, ideal for patient-specific disease models, alongside their possible applications in regenerative medicine and reproduction, has drawn a lot of attention to the field with numbers of iPSC studies published growing exponentially. IPSCs have now been generated for a wide variety of species, including but not limited to, mouse, human, primate, wild felines, bovines, equines, birds and rodents, some of which still lack well-established embryonic stem cell lines. The paucity of robust characterization of some of these iPSC lines as well as the residual expression of transgenes involved in the reprogramming process still hampers the use of such cells in species preservation or medical research, underscoring the requirement for further investigations. Here, we provide an extensive overview of iPSC generated from a broad range of animal species including their potential applications and limitations.
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Affiliation(s)
- Laís Vicari de Figueiredo Pessôa
- Group of Stem Cell Models for Studies of Neurodegenerative Diseases, Section for Pathobiological Sciences, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg 1870, Denmark
| | - Fabiana Fernandes Bressan
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-000, São Paulo, Brazil
| | - Kristine Karla Freude
- Group of Stem Cell Models for Studies of Neurodegenerative Diseases, Section for Pathobiological Sciences, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg 1870, Denmark
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9
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Gao X, Nowak-Imialek M, Chen X, Chen D, Herrmann D, Ruan D, Chen ACH, Eckersley-Maslin MA, Ahmad S, Lee YL, Kobayashi T, Ryan D, Zhong J, Zhu J, Wu J, Lan G, Petkov S, Yang J, Antunes L, Campos LS, Fu B, Wang S, Yong Y, Wang X, Xue SG, Ge L, Liu Z, Huang Y, Nie T, Li P, Wu D, Pei D, Zhang Y, Lu L, Yang F, Kimber SJ, Reik W, Zou X, Shang Z, Lai L, Surani A, Tam PPL, Ahmed A, Yeung WSB, Teichmann SA, Niemann H, Liu P. Establishment of porcine and human expanded potential stem cells. Nat Cell Biol 2019; 21:687-699. [PMID: 31160711 PMCID: PMC7035105 DOI: 10.1038/s41556-019-0333-2] [Citation(s) in RCA: 232] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 04/24/2019] [Indexed: 12/14/2022]
Abstract
We recently derived mouse expanded potential stem cells (EPSCs) from individual blastomeres by inhibiting the critical molecular pathways that predispose their differentiation. EPSCs had enriched molecular signatures of blastomeres and possessed developmental potency for all embryonic and extra-embryonic cell lineages. Here, we report the derivation of porcine EPSCs, which express key pluripotency genes, are genetically stable, permit genome editing, differentiate to derivatives of the three germ layers in chimeras and produce primordial germ cell-like cells in vitro. Under similar conditions, human embryonic stem cells and induced pluripotent stem cells can be converted, or somatic cells directly reprogrammed, to EPSCs that display the molecular and functional attributes reminiscent of porcine EPSCs. Importantly, trophoblast stem-cell-like cells can be generated from both human and porcine EPSCs. Our pathway-inhibition paradigm thus opens an avenue for generating mammalian pluripotent stem cells, and EPSCs present a unique cellular platform for translational research in biotechnology and regenerative medicine.
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Affiliation(s)
- Xuefei Gao
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Stem Cell and Regenerative Medicine Consortium, Pokfulam, Hong Kong
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Monika Nowak-Imialek
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Mariensee, Neustadt, Germany
- REBIRTH Centre of Excellence, Hannover Medical School, Hannover, Germany
| | - Xi Chen
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Dongsheng Chen
- BGI-Shenzhen, Shenzhen, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Doris Herrmann
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Mariensee, Neustadt, Germany
- REBIRTH Centre of Excellence, Hannover Medical School, Hannover, Germany
| | - Degong Ruan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Stem Cell and Regenerative Medicine Consortium, Pokfulam, Hong Kong
- Key Laboratory of Regenerative Biology of Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Andy Chun Hang Chen
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | | | - Shakil Ahmad
- Aston Medical Research Institute, Aston Medical School, Aston University, Birmingham, UK
| | - Yin Lau Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Toshihiro Kobayashi
- Wellcome Trust and Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
| | - David Ryan
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Jixing Zhong
- BGI-Shenzhen, Shenzhen, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Jiacheng Zhu
- BGI-Shenzhen, Shenzhen, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Jian Wu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Stem Cell and Regenerative Medicine Consortium, Pokfulam, Hong Kong
| | - Guocheng Lan
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Stoyan Petkov
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Mariensee, Neustadt, Germany
- REBIRTH Centre of Excellence, Hannover Medical School, Hannover, Germany
- German Primate Center, Platform Degenerative Diseases, Gottingen, Germany
| | - Jian Yang
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liliana Antunes
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Lia S Campos
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Beiyuan Fu
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Shengpeng Wang
- BGI-Shenzhen, Shenzhen, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Yu Yong
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Xiaomin Wang
- Key Laboratory of Regenerative Biology of Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Song-Guo Xue
- Center for Reproductive Medicine, Shanghai East Hospital, School of Medicine, Tong Ji University, Shanghai, China
| | - Liangpeng Ge
- Chongqing Academy of Animal Sciences and Key Laboratory of Pig Industry Sciences, Department of Agriculture, Chongqing, China
| | - Zuohua Liu
- Chongqing Academy of Animal Sciences and Key Laboratory of Pig Industry Sciences, Department of Agriculture, Chongqing, China
| | - Yong Huang
- Chongqing Academy of Animal Sciences and Key Laboratory of Pig Industry Sciences, Department of Agriculture, Chongqing, China
| | - Tao Nie
- Key Laboratory of Regenerative Biology of Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Peng Li
- Key Laboratory of Regenerative Biology of Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Donghai Wu
- Key Laboratory of Regenerative Biology of Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Duanqing Pei
- Key Laboratory of Regenerative Biology of Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Henan, China
| | - Liming Lu
- Institute of Immunology, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Fengtang Yang
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Susan J Kimber
- Faculty of Biology Medicine and Health, University of Manchester, Manchester, UK
| | - Wolf Reik
- Epigenetics Programme, Babraham Institute, Babraham Research Campus, Cambridge, UK
| | - Xiangang Zou
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Zhouchun Shang
- BGI-Shenzhen, Shenzhen, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Liangxue Lai
- Key Laboratory of Regenerative Biology of Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Azim Surani
- Wellcome Trust and Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
| | - Patrick P L Tam
- Embryology Unit, Children's Medical Research Institute and School of Medical Sciences, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW, Australia
| | - Asif Ahmed
- Aston Medical Research Institute, Aston Medical School, Aston University, Birmingham, UK
| | - William Shu Biu Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Sarah A Teichmann
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Heiner Niemann
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Mariensee, Neustadt, Germany.
- REBIRTH Centre of Excellence, Hannover Medical School, Hannover, Germany.
- Hannover Medical School (MHH), TwinCore, Hannover, Germany.
| | - Pentao Liu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Stem Cell and Regenerative Medicine Consortium, Pokfulam, Hong Kong.
- The Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK.
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10
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Godehardt AW, Petkov S, Gulich B, Fischer N, Niemann H, Tönjes RR. Comparative gene expression profiling of pig-derived iPSC-like cells: Effects of induced pluripotency on expression of porcine endogenous retrovirus (PERV). Xenotransplantation 2019; 25:e12429. [PMID: 30264886 DOI: 10.1111/xen.12429] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/04/2018] [Accepted: 05/25/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND Porcine induced pluripotent stem cells (piPSCs) offer an alternative strategy in xenotransplantation (XTx). As human endogenous retroviruses (HERV), particularly HERV-K, are highly expressed in natural human stem cells, we compared the expression of porcine endogenous retroviruses (PERV) and retrotransposon LINE-1 (L1) open reading frames 1 and 2 (pORF1 and pORF2) in different piPSC-like cell lines with their progenitors (porcine fetal fibroblasts, pFF). METHODS Cells reprogrammed via Sleeping Beauty-transposed transcription factors were cultured and analyzed on a custom-designed microarray representing the reference pig genome. Data were complemented by qRT-PCR and reverse transcriptase (RT) assay. RESULTS The expression profiles revealed that 8515 of 26 967 targets were differentially expressed. A total of 4443 targets showed log2 expression ratio >1, and 4072 targets showed log2 expression ratio less than -1 with 0.05 P-value threshold. Approximately ten percent of the targets showed highly significant expression ratios with log2 ≥4 or ≤-4. Besides this general switch in cellular gene expression that was accompanied by an altered morphology, expression of both PERV and L1 pORF1/pORF2 was significantly enhanced. piPSC-like cells revealed a 10-fold to 100-fold higher transcription of the viral PERV-A and PERV-B envelope genes (env), viral protease/polymerase (prt/pol), and L1 elements. No functional retrovirus could be detected under these conditions. CONCLUSION Epigenetic reprogramming has functional impact on retrotransposons. Thus, the induction of pig-derived pluripotent cells influences their PERV expression profile. Data emphasize the necessity to focus on animals, which show non-functional endogenous viral background to ensure virological safety.
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Affiliation(s)
| | | | - Barbara Gulich
- Division of Medical Biotechnology, Paul-Ehrlich-Institut, Langen, Germany
| | - Nicole Fischer
- Division of Medical Biotechnology, Paul-Ehrlich-Institut, Langen, Germany
| | - Heiner Niemann
- Institute for Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Neustadt, Germany
| | - Ralf R Tönjes
- Division of Medical Biotechnology, Paul-Ehrlich-Institut, Langen, Germany
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11
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Lipid Supplement in the Cultural Condition Facilitates the Porcine iPSC Derivation through cAMP/PKA/CREB Signal Pathway. Int J Mol Sci 2018; 19:ijms19020509. [PMID: 29419748 PMCID: PMC5855731 DOI: 10.3390/ijms19020509] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/25/2018] [Accepted: 01/30/2018] [Indexed: 12/16/2022] Open
Abstract
Large numbers of lipids exist in the porcine oocytes and early embryos and have the positive effects on their development, suggesting that the lipids may play an important role in pluripotency establishment and maintenance in pigs. However, the effects of lipids and their metabolites, such as fatty acids on reprogramming and the pluripotency gene expression of porcine-induced pluripotent stem cells (iPSCs), are unclear. Here, we generated the porcine iPSCs that resemble the mouse embryonic stem cells (ESCs) under lipid and fatty-acid-enriched cultural conditions (supplement of AlbuMAX). These porcine iPSCs show positive for the ESCs pluripotency markers and have the differentiation abilities to all three germ layers, and importantly, have the capability of aggregation into the inner cell mass (ICM) of porcine blastocysts. We further confirmed that lipid and fatty acid enriched condition can promote the cell proliferation and improve reprogramming efficiency by elevating cAMP levels. Interestingly, this lipids supplement promotes mesenchymal–epithelial transition (MET) through the cAMP/PKA/CREB signal pathway and upregulates the E-cadherin expression during porcine somatic cell reprogramming. The lipids supplement also makes a contribution to lipid droplets accumulation in the porcine iPSCs that resemble porcine preimplantation embryos. These findings may facilitate understanding of the lipid metabolism in porcine iPSCs and lay the foundation of bona fide porcine embryonic stem cell derivation.
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12
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Gu Q, Zhu H, Chen L, Shuai L, Fang J, Wu J, Liu L, Li W, Dai J, Hao J, Zhou Q. Three dimensional collagen scaffolds promote iPSC induction with higher pluripotency. Protein Cell 2018; 7:844-848. [PMID: 27730497 PMCID: PMC5084158 DOI: 10.1007/s13238-016-0321-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Qi Gu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- AIIM Facility, ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Innovation Campus, Squires Way, Fairy Meadow, NSW, 2519, Australia
| | - He Zhu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lei Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ling Shuai
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jinhui Fang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Jun Wu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lei Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jianwu Dai
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jie Hao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Qi Zhou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
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13
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Mao J, Zhang Q, Deng W, Wang H, Liu K, Fu H, Zhao Q, Wang X, Liu L. Epigenetic Modifiers Facilitate Induction and Pluripotency of Porcine iPSCs. Stem Cell Reports 2016; 8:11-20. [PMID: 28041878 PMCID: PMC5233437 DOI: 10.1016/j.stemcr.2016.11.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 11/27/2016] [Accepted: 11/28/2016] [Indexed: 12/11/2022] Open
Abstract
Inadequate silencing of exogenous genes represents a major obstacle to complete epigenetic reprogramming of porcine-induced pluripotent stem cells (piPSCs) by conventional pluripotency transcription factors (OSKM). We tested the hypothesis that epigenetic modification by active DNA or histone demethylation or by inhibition of histone deacetylase would enhance reprogramming and exogenous gene silencing in piPSCs. piPSCs induced by OSKM in combination with epigenetic factors, specifically Ten-Eleven Translocation (Tet1 or Tet3) or lysine (K)-specific demethylase 3A (Kdm3a), expressed higher levels of Rex1 and other genes representing naive state and exhibited more open chromatin status, compared with those of OSKM controls. Tet1 also improved differentiation capacity. Conversion with inhibitors of histone deacetylases (HDACi), NaB, TSA, or VPA, further increased Rex1 expression, while decreasing expression of exogenous genes. piPSCs induced by Tet1+OSKM followed by conversion with HDACi show high pluripotency. Together, epigenetic modifiers enhance generation of piPSCs and reduce their reliance on exogenous genes. Epigenetic modifiers facilitate induction and quality of porcine iPSCs Tet1, Tet3, or Kdm3a increases naive pluripotency network in association with Rex1 Unlike cytoplasmic Rex1, nuclear expression of Rex1 is associated with high pluripotency HDAC inhibitors further activate Rex1 and reduce reliance on the exogenous genes
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Affiliation(s)
- Jian Mao
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Qian Zhang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Wei Deng
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Hua Wang
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Kai Liu
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Haifeng Fu
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Qiang Zhao
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xumin Wang
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100101, China
| | - Lin Liu
- State Key Laboratory of Medicinal Chemical Biology, Department of Cell Biology and Genetics, College of Life Sciences, Nankai University, Tianjin 300071, China.
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