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Frisch C, Kostes WW, Galyon B, Whitman B, Tekel SJ, Standage-Beier K, Srinivasan G, Wang X, Brafman DA. PINE-TREE enables highly efficient genetic modification of human cell lines. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 33:483-492. [PMID: 37588683 PMCID: PMC10425837 DOI: 10.1016/j.omtn.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 07/11/2023] [Indexed: 08/18/2023]
Abstract
Prime editing technologies enable precise genome editing without the caveats of CRISPR nuclease-based methods. Nonetheless, current approaches to identify and isolate prime-edited cell populations are inefficient. Here, we established a fluorescence-based system, prime-induced nucleotide engineering using a transient reporter for editing enrichment (PINE-TREE), for real-time enrichment of prime-edited cell populations. We demonstrated the broad utility of PINE-TREE for highly efficient introduction of substitutions, insertions, and deletions at various genomic loci. Finally, we employ PINE-TREE to rapidly and efficiently generate clonal isogenic human pluripotent stem cell lines, a cell type recalcitrant to genome editing.
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Affiliation(s)
- Carlye Frisch
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - William W. Kostes
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Brooke Galyon
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Brycelyn Whitman
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Stefan J. Tekel
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Kylie Standage-Beier
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
- Molecular and Cellular Biology Graduate Program, Arizona State University, Tempe, AZ 85287, USA
| | - Gayathri Srinivasan
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Xiao Wang
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - David A. Brafman
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
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2
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Balmas E, Sozza F, Bottini S, Ratto ML, Savorè G, Becca S, Snijders KE, Bertero A. Manipulating and studying gene function in human pluripotent stem cell models. FEBS Lett 2023; 597:2250-2287. [PMID: 37519013 DOI: 10.1002/1873-3468.14709] [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: 06/01/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 08/01/2023]
Abstract
Human pluripotent stem cells (hPSCs) are uniquely suited to study human development and disease and promise to revolutionize regenerative medicine. These applications rely on robust methods to manipulate gene function in hPSC models. This comprehensive review aims to both empower scientists approaching the field and update experienced stem cell biologists. We begin by highlighting challenges with manipulating gene expression in hPSCs and their differentiated derivatives, and relevant solutions (transfection, transduction, transposition, and genomic safe harbor editing). We then outline how to perform robust constitutive or inducible loss-, gain-, and change-of-function experiments in hPSCs models, both using historical methods (RNA interference, transgenesis, and homologous recombination) and modern programmable nucleases (particularly CRISPR/Cas9 and its derivatives, i.e., CRISPR interference, activation, base editing, and prime editing). We further describe extension of these approaches for arrayed or pooled functional studies, including emerging single-cell genomic methods, and the related design and analytical bioinformatic tools. Finally, we suggest some directions for future advancements in all of these areas. Mastering the combination of these transformative technologies will empower unprecedented advances in human biology and medicine.
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Affiliation(s)
- Elisa Balmas
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
| | - Federica Sozza
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
| | - Sveva Bottini
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
| | - Maria Luisa Ratto
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
| | - Giulia Savorè
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
| | - Silvia Becca
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
| | - Kirsten Esmee Snijders
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
| | - Alessandro Bertero
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center "Guido Tarone", University of Turin, Torino, Italy
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3
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Pellegrini S, Zamarian V, Landi E, Cospito A, Lombardo MT, Manenti F, Citro A, Schiavo Lena M, Piemonti L, Sordi V. Treating iPSC-Derived β Cells with an Anti-CD30 Antibody-Drug Conjugate Eliminates the Risk of Teratoma Development upon Transplantation. Int J Mol Sci 2022; 23:ijms23179699. [PMID: 36077097 PMCID: PMC9456216 DOI: 10.3390/ijms23179699] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/12/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Insulin-producing cells derived from induced pluripotent stem cells (iPSCs) are promising candidates for β cell replacement in type 1 diabetes. However, the risk of teratoma formation due to residual undifferentiated iPSCs contaminating the differentiated cells is still a critical concern for clinical application. Here, we hypothesized that pretreatment of iPSC-derived insulin-producing cells with an anti-CD30 antibody−drug conjugate could prevent in vivo teratoma formation by selectively killing residual undifferentiated cells. CD30 is expressed in all human iPSCs clones tested by flow cytometry (n = 7) but not in iPSC-derived β cells (iβs). Concordantly, anti-CD30 treatment in vitro for 24 h induced a dose-dependent cell death (up to 90%) in human iPSCs while it did not kill iβs nor had an impact on iβ identity and function, including capacity to secrete insulin in response to stimuli. In a model of teratoma assay associated with iβ transplantation, the pretreatment of cells with anti-CD30 for 24 h before the implantation into NOD-SCID mice completely eliminated teratoma development (0/10 vs. 8/8, p < 0.01). These findings suggest that short-term in vitro treatment with clinical-grade anti-CD30, targeting residual undifferentiated cells, eliminates the tumorigenicity of iPSC-derived β cells, potentially providing enhanced safety for iPSC-based β cell replacement therapy in clinical scenarios.
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Affiliation(s)
- Silvia Pellegrini
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
| | - Valentina Zamarian
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
| | - Elisa Landi
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
| | - Alessandro Cospito
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
| | - Marta Tiffany Lombardo
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
| | - Fabio Manenti
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
| | - Antonio Citro
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
| | - Marco Schiavo Lena
- Department of Pathology, IRCCS San Raffaele Hospital, 20132 Milan, Italy
| | - Lorenzo Piemonti
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
- Faculty of Medicine and Surgery, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Valeria Sordi
- Diabetes Research Institute, IRCCS San Raffaele Hospital, Via Olgettina 60, 20132 Milan, Italy
- Correspondence:
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4
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Adampourezare M, Hasanzadeh M, Seidi F. Optical bio-sensing of DNA methylation analysis: an overview of recent progress and future prospects. RSC Adv 2022; 12:25786-25806. [PMID: 36199327 PMCID: PMC9460980 DOI: 10.1039/d2ra03630d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 09/03/2022] [Indexed: 12/02/2022] Open
Abstract
DNA methylation as one of the most important epigenetic modifications has a critical role in regulating gene expression and drug resistance in treating diseases such as cancer. Therefore, the detection of DNA methylation in the early stages of cancer plays an essential role in disease diagnosis. The majority of routine methods to detect DNA methylation are very tedious and costly. Therefore, designing easy and sensitive methods to detect DNA methylation directly and without the need for molecular methods is a hot topic issue in bioscience. Here we provide an overview on the optical biosensors (including fluorescence, FRET, SERs, colorimetric) that have been applied to detect the DNA methylation. In addition, various types of labeled and label-free reactions along with the application of molecular methods and optical biosensors have been surveyed. Also, the effect of nanomaterials on the sensitivity of detection methods is discussed. Furthermore, a comprehensive overview of the advantages and disadvantages of each method are provided. Finally, the use of microfluidic devices in the evaluation of DNA methylation and DNA damage analysis based on smartphone detection has been discussed. Here, we provide an overview on the optical biosensors (including fluorescence, FRET, SERs, colorimetric) that have been applied to detect the DNA methylation.![]()
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Affiliation(s)
- Mina Adampourezare
- Department of Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzad Seidi
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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5
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Lim J, Sakai E, Sakurai F, Mizuguchi H. miR-27b antagonizes BMP signaling in early differentiation of human induced pluripotent stem cells. Sci Rep 2021; 11:19820. [PMID: 34615950 PMCID: PMC8494899 DOI: 10.1038/s41598-021-99403-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 09/15/2021] [Indexed: 11/21/2022] Open
Abstract
Human induced pluripotent stem (hiPS) cells are feasible materials for studying the biological mechanisms underlying human embryogenesis. In early embryogenesis, definitive endoderm and mesoderm are differentiated from their common precursor, mesendoderm. Bone morphogenetic protein (BMP) signaling is responsible for regulating mesendoderm and mesoderm formation. Micro RNAs (miRNAs), short non-coding RNAs, broadly regulate biological processes via post-transcriptional repression. The expression of miR-27b, which is enriched in somatic cells, has been reported to increase through definitive endoderm and hepatic differentiation, but little is known about how miR-27b acts during early differentiation. Here, we used miR-27b-inducible hiPS cells to investigate the roles of miR-27b in the undifferentiated and early-differentiated stages. In undifferentiated hiPS cells, miR-27b suppressed the expression of pluripotency markers [alkaline phosphatase (AP) and nanog homeobox (NANOG)] and cell proliferation. Once differentiation began, miR-27b expression repressed phosphorylated SMAD1/5, the mediators of the BMP signaling, throughout definitive endoderm differentiation. Consistent with the above findings, miR-27b overexpression downregulated BMP-induced mesendodermal marker genes [Brachyury, mix paired-like homeobox 1 (MIXL1) and eomesodermin (EOMES)], suggesting that miR-27b had an inhibitory effect on early differentiation. Collectively, our findings revealed a novel antagonistic role of miR-27b in the BMP signaling pathway in the early differentiation of hiPS cells.
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Affiliation(s)
- Jaeeun Lim
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Eiko Sakai
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Fuminori Sakurai
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan. .,Laboratory of Hepatocyte Regulation, National Institute of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito, Asagi, Ibaraki, Osaka, 567-0085, Japan. .,The Center for Advanced Medical Engineering and Informatics, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. .,Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Osaka, Japan.
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6
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González Castro N, Bjelic J, Malhotra G, Huang C, Alsaffar SH. Comparison of the Feasibility, Efficiency, and Safety of Genome Editing Technologies. Int J Mol Sci 2021; 22:10355. [PMID: 34638696 PMCID: PMC8509008 DOI: 10.3390/ijms221910355] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 08/26/2021] [Accepted: 09/24/2021] [Indexed: 12/15/2022] Open
Abstract
Recent advances in programmable nucleases including meganucleases (MNs), zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and clustered regularly interspaced short palindromic repeats-Cas (CRISPR-Cas) have propelled genome editing from explorative research to clinical and industrial settings. Each technology, however, features distinct modes of action that unevenly impact their applicability across the entire genome and are often tested under significantly different conditions. While CRISPR-Cas is currently leading the field due to its versatility, quick adoption, and high degree of support, it is not without limitations. Currently, no technology can be regarded as ideal or even applicable to every case as the context dictates the best approach for genetic modification within a target organism. In this review, we implement a four-pillar framework (context, feasibility, efficiency, and safety) to assess the main genome editing platforms, as a basis for rational decision-making by an expanding base of users, regulators, and consumers. Beyond carefully considering their specific use case with the assessment framework proposed here, we urge stakeholders interested in genome editing to independently validate the parameters of their chosen platform prior to commitment. Furthermore, safety across all applications, particularly in clinical settings, is a paramount consideration and comprehensive off-target detection strategies should be incorporated within workflows to address this. Often neglected aspects such as immunogenicity and the inadvertent selection of mutants deficient for DNA repair pathways must also be considered.
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Affiliation(s)
- Nicolás González Castro
- School of Biosciences, Faculty of Science, University of Melbourne, Parkville 3052, Australia; (N.G.C.); (G.M.); (C.H.); (S.H.A.)
| | - Jan Bjelic
- School of Biosciences, Faculty of Science, University of Melbourne, Parkville 3052, Australia; (N.G.C.); (G.M.); (C.H.); (S.H.A.)
| | - Gunya Malhotra
- School of Biosciences, Faculty of Science, University of Melbourne, Parkville 3052, Australia; (N.G.C.); (G.M.); (C.H.); (S.H.A.)
| | - Cong Huang
- School of Biosciences, Faculty of Science, University of Melbourne, Parkville 3052, Australia; (N.G.C.); (G.M.); (C.H.); (S.H.A.)
| | - Salman Hasan Alsaffar
- School of Biosciences, Faculty of Science, University of Melbourne, Parkville 3052, Australia; (N.G.C.); (G.M.); (C.H.); (S.H.A.)
- Biotechnology Department, Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Shuwaikh 13109, Kuwait
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7
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Yip BH. Recent Advances in CRISPR/Cas9 Delivery Strategies. Biomolecules 2020; 10:biom10060839. [PMID: 32486234 PMCID: PMC7356196 DOI: 10.3390/biom10060839] [Citation(s) in RCA: 147] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 12/27/2022] Open
Abstract
The clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system has revolutionized the field of gene editing. Continuous efforts in developing this technology have enabled efficient in vitro, ex vivo, and in vivo gene editing through a variety of delivery strategies. Viral vectors are commonly used in in vitro, ex vivo, and in vivo delivery systems, but they can cause insertional mutagenesis, have limited cloning capacity, and/or elicit immunologic responses. Physical delivery methods are largely restricted to in vitro and ex vivo systems, whereas chemical delivery methods require extensive optimization to improve their efficiency for in vivo gene editing. Achieving a safe and efficient in vivo delivery system for CRISPR/Cas9 remains the most challenging aspect of gene editing. Recently, extracellular vesicle-based systems were reported in various studies to deliver Cas9 in vitro and in vivo. In comparison with other methods, extracellular vesicles offer a safe, transient, and cost-effective yet efficient platform for delivery, indicating their potential for Cas9 delivery in clinical trials. In this review, we first discuss the pros and cons of different Cas9 delivery strategies. We then specifically review the development of extracellular vesicle-mediated gene editing and highlight the strengths and weaknesses of this technology.
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Affiliation(s)
- Bon Ham Yip
- Vector Development and Production Laboratory, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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8
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9
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Standage-Beier K, Tekel SJ, Brookhouser N, Schwarz G, Nguyen T, Wang X, Brafman DA. A transient reporter for editing enrichment (TREE) in human cells. Nucleic Acids Res 2019; 47:e120. [PMID: 31428784 PMCID: PMC6821290 DOI: 10.1093/nar/gkz713] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 08/01/2019] [Accepted: 08/05/2019] [Indexed: 12/21/2022] Open
Abstract
Current approaches to identify cell populations that have been modified with deaminase base editing technologies are inefficient and rely on downstream sequencing techniques. In this study, we utilized a blue fluorescent protein (BFP) that converts to green fluorescent protein (GFP) upon a C-to-T substitution as an assay to report directly on base editing activity within a cell. Using this assay, we optimize various base editing transfection parameters and delivery strategies. Moreover, we utilize this assay in conjunction with flow cytometry to develop a transient reporter for editing enrichment (TREE) to efficiently purify base-edited cell populations. Compared to conventional cell enrichment strategies that employ reporters of transfection (RoT), TREE significantly improved the editing efficiency at multiple independent loci, with efficiencies approaching 80%. We also employed the BFP-to-GFP conversion assay to optimize base editor vector design in human pluripotent stem cells (hPSCs), a cell type that is resistant to genome editing and in which modification via base editors has not been previously reported. At last, using these optimized vectors in the context of TREE allowed for the highly efficient editing of hPSCs. We envision TREE as a readily adoptable method to facilitate base editing applications in synthetic biology, disease modeling, and regenerative medicine.
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Affiliation(s)
- Kylie Standage-Beier
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
- Molecular and Cellular Biology graduate program, Arizona State University, Tempe, AZ 85287, USA
| | - Stefan J Tekel
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Nicholas Brookhouser
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
- Graduate Program in Clinical Translational Sciences, University of Arizona College of Medicine-Phoenix, Phoenix, AZ 85004, USA
| | - Grace Schwarz
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Toan Nguyen
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Xiao Wang
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - David A Brafman
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
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10
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Hu J, Wang J. From embryonic stem cells to induced pluripotent stem cells-Ready for clinical therapy? Clin Transplant 2019; 33:e13573. [PMID: 31013374 DOI: 10.1111/ctr.13573] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 04/18/2019] [Indexed: 01/08/2023]
Abstract
Embryonic stem cells and induced pluripotent stem cells have increasingly important roles in many different fields of research and medicine. Major areas of impact include improved in vitro disease models, drug screening, and the development of cell-based clinical therapies. Here, we review the generation and uses of embryonic stem cells compared to induced pluripotent stem cells and discuss their advantages and limitations. We also evaluate the feasibility of clinical therapies and the future prospects for induced pluripotent cell-based treatments.
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Affiliation(s)
- Jing Hu
- Department of Neonatology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Jimei Wang
- Department of Neonatology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
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11
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Eguizabal C, Aran B, Chuva de Sousa Lopes SM, Geens M, Heindryckx B, Panula S, Popovic M, Vassena R, Veiga A. Two decades of embryonic stem cells: a historical overview. Hum Reprod Open 2019; 2019:hoy024. [PMID: 30895264 PMCID: PMC6396646 DOI: 10.1093/hropen/hoy024] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/10/2018] [Indexed: 12/12/2022] Open
Abstract
STUDY QUESTION How did the field of stem cell research develop in the years following the derivation of the first human embryonic stem cell (hESC) line? SUMMARY ANSWER Supported by the increasing number of clinical trials to date, significant technological advances in the past two decades have brought us ever closer to clinical therapies derived from pluripotent cells. WHAT IS KNOWN ALREADY Since their discovery 20 years ago, the use of human pluripotent stem cells has progressed tremendously from bench to bedside. Here, we provide a concise review of the main keystones of this journey and focus on ongoing clinical trials, while indicating the most relevant future research directions. STUDY DESIGN, SIZE, DURATION This is a historical narrative, including relevant publications in the field of pluripotent stem cells (PSC) derivation and differentiation, recounted both through scholarly research of published evidence and interviews of six pioneers who participated in some of the most relevant discoveries in the field. PARTICIPANTS/MATERIALS, SETTING, METHODS The authors all contributed by researching the literature and agreed upon body of works. Portions of the interviews of the field pioneers have been integrated into the review and have also been included in full for advanced reader interest. MAIN RESULTS AND THE ROLE OF CHANCE The stem cell field is ever expanding. We find that in the 20 years since the derivation of the first hESC lines, several relevant developments have shaped the pluripotent cell field, from the discovery of different states of pluripotency, the derivation of induced PSC, the refinement of differentiation protocols with several clinical trials underway, as well as the recent development of organoids. The challenge for the years to come will be to validate and refine PSCs for clinical use, from the production of highly defined cell populations in clinical grade conditions to the possibility of creating replacement organoids for functional, if not anatomical, function restoration. LIMITATIONS, REASONS FOR CAUTION This is a non-systematic review of current literature. Some references may have escaped the experts’ analysis due to the exceedingly diverse nature of the field. As the field of regenerative medicine is rapidly advancing, some of the most recent developments may have not been captured entirely. WIDER IMPLICATIONS OF THE FINDINGS The multi-disciplinary nature and tremendous potential of the stem cell field has important implications for basic as well as translational research. Recounting these activities will serve to provide an in-depth overview of the field, fostering a further understanding of human stem cell and developmental biology. The comprehensive overview of clinical trials and expert opinions included in this narrative may serve as a valuable scientific resource, supporting future efforts in translational approaches. STUDY FUNDING/COMPETING INTEREST(S) ESHRE provided funding for the authors’ on-site meeting and discussion during the preparation of this manuscript. S.M.C.S.L. is funded by the European Research Council Consolidator (ERC-CoG-725722-OVOGROWTH). M.P. is supported by the Special Research Fund, Bijzonder Onderzoeksfonds (BOF01D08114). M.G. is supported by the Methusalem grant of Vrije Universiteit Brussel, in the name of Prof. Karen Sermon and by Innovation by Science and Technology in Flanders (IWT, Project Number: 150042). A.V. and B.A. are supported by the Plataforma de Proteomica, Genotipado y Líneas Celulares (PT1770019/0015) (PRB3), Instituto de Salud Carlos III. Research grant to B.H. by the Research Foundation—Flanders (FWO) (FWO.KAN.2016.0005.01 and FWO.Project G051516N). There are no conflicts of interest to declare. TRIAL REGISTRATION NUMBER Not applicable. ESHRE Pages are not externally peer reviewed. This article has been approved by the Executive Committee of ESHRE.
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Affiliation(s)
- C Eguizabal
- Cell Therapy and Stem Cell Group, Basque Center for Blood Transfusion and Human Tissues, Barrio Labeaga S/N, Galdakao, Spain
| | - B Aran
- Barcelona Stem Cell Bank, Centre of Regenerative Medicine in Barcelona, Barcelona, Spain
| | - S M Chuva de Sousa Lopes
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, Leiden, The Netherlands.,Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - M Geens
- Research Group Reproduction and Genetics, Vrije Univeristeit Brussel, Laarbeeklaan 103, Jette (Brussels), Belgium
| | - B Heindryckx
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - S Panula
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - M Popovic
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | | | - A Veiga
- Barcelona Stem Cell Bank, Centre of Regenerative Medicine in Barcelona, Barcelona, Spain.,Dexeus Mujer, Hospital Universitari Dexeus, Barcelona, Spain
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12
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Kim CY, Hwang IK, Kang C, Chung EB, Jung CR, Oh H, Jeong YH, Moon SH, Kim JS, Hong KS, Park JH, Chung HM. Improved Transfection Efficiency and Metabolic Activity in Human Embryonic Stem Cell Using Non-Enzymatic Method. Int J Stem Cells 2018; 11:149-156. [PMID: 30173502 PMCID: PMC6285293 DOI: 10.15283/ijsc18037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/12/2018] [Accepted: 07/12/2018] [Indexed: 01/13/2023] Open
Abstract
Human embryonic stem cells (hESCs) are pluripotent cells widely used in conventional and regenerative medicine due to their ability to self-renew, proliferate and differentiate. Recently, genetic modification of stem cells using genome editing is the most advanced technique for treating hereditary diseases. Nevertheless, the low transfection efficiency of hESCs using enzymatic methods is still limited in in vitro preclinical research. To overcome these limitations, we have developed transfection methods using non-enzymatic treatments on hESCs. In this study, hESCs were transfected following enzymatic (TrypLE and trypsin) and non-enzymatic treatment ethylenediaminetetraacetic acid (EDTA) to increase transfection efficiency. Flow cytometric analysis using an enhanced green fluorescent protein vector showed a significantly increased transfection efficiency of EDTA method compared to standard enzyme method. In addition, the EDTA approach maintained stable cell viability and recovery rate of hESCs after transfection. Also, metabolic activity by using Extracellular Flux Analyzer revealed that EDTA method maintained as similar levels of cell functionality as normal group comparing with enzymatic groups. These results suggest that transfection using EDTA is a more efficient and safe substitute for transfection than the use of standard enzymatic methods.
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Affiliation(s)
- C-Yoon Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea.,Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - In-Kyu Hwang
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Changhee Kang
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Eun-Bin Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Cho-Rok Jung
- Gene Therapy Research Unit, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Hanseul Oh
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Young-Hoon Jeong
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Sung-Hwan Moon
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Jong Soo Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Ki-Sung Hong
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Jae-Hak Park
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Hyung-Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
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Hair Follicle Dermal Cells Support Expansion of Murine and Human Embryonic and Induced Pluripotent Stem Cells and Promote Haematopoiesis in Mouse Cultures. Stem Cells Int 2018; 2018:8631432. [PMID: 30154866 PMCID: PMC6098861 DOI: 10.1155/2018/8631432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 04/26/2018] [Indexed: 12/26/2022] Open
Abstract
In the hair follicle, the dermal papilla (DP) and dermal sheath (DS) support and maintain proliferation and differentiation of the epithelial stem cells that produce the hair fibre. In view of their regulatory properties, in this study, we investigated the interaction between hair follicle dermal cells (DP and DS) and embryonic stem cells (ESCs); induced pluripotent stem cells (iPSCs); and haematopoietic stem cells. We found that coculture of follicular dermal cells with ESCs or iPSCs supported their prolonged maintenance in an apparently undifferentiated state as established by differentiation assays, immunocytochemistry, and RT-PCR for markers of undifferentiated ESCs. We further showed that cytokines that are involved in ESC support are also expressed by cultured follicle dermal cells, providing a possible explanation for maintenance of ES cell stemness in cocultures. The same cytokines were expressed within follicles in situ in a pattern more consistent with a role in follicle growth activities than stem cell maintenance. Finally, we show that cultured mouse follicle dermal cells provide good stromal support for haematopoiesis in an established coculture model. Human follicular dermal cells represent an accessible and readily propagated source of feeder cells for pluripotent and haematopoietic cells and have potential for use in clinical applications.
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Nakashima Y, Miyagi-Shiohira C, Noguchi H, Omasa T. Atorvastatin Inhibits the HIF1α-PPAR Axis, Which Is Essential for Maintaining the Function of Human Induced Pluripotent Stem Cells. Mol Ther 2018; 26:1715-1734. [PMID: 29929789 PMCID: PMC6036234 DOI: 10.1016/j.ymthe.2018.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 06/04/2018] [Accepted: 06/07/2018] [Indexed: 12/31/2022] Open
Abstract
We herein report a novel mechanism of action of statin preparations using a new drug discovery method. Milk fat globule-EGF factor 8 protein (MFG-E8) was identified from the secretory component of mouse embryonic fibroblast (MEF) as a cell adhesion-promoting factor effective for screening active cellular agents of human induced pluripotent stem cells (hiPSCs) in vitro using electrochemical impedance. Our analyses showed that atorvastatin did not cause death in myocardial cells differentiated from hiPSCs but reduced the pluripotent cell survival in vitro when using serum- and albumin-free media, and inhibited the ability to form teratomas in mice. This result could have been already the cytopathic effect of atorvastatin, and complete elimination of hiPSCs was confirmed in the xenotransplantation assay. The administration of atorvastatin to hiPSCs caused the expression of hypoxia inducible factor (HIF)1α mRNA to be unchanged at 6 hr and downregulated at 24 hr. In addition, the inhibition of the survival of hiPSCs was confirmed by HIF1α-peroxisome proliferator-activated receptor (PPAR) axis inhibition. These results suggest that the addition of atorvastatin to hiPSC cultures reduces the survival of pluripotent cells by suppressing the HIF1α-PPAR axis. In summary, the HIF1α-PPAR axis has an important role in maintaining the survival of pluripotent hiPSCs.
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Affiliation(s)
- Yoshiki Nakashima
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima 770-8506, Japan; Department of Material and Life Science, Graduate School of Engineering, Osaka University, Yamadaoka, Suita, Osaka 565-0871, Japan; Department of Regenerative Medicine, Graduate School of Medicine, University of the Ryukyus, Nishihara-cho, Okinawa 903-0215, Japan.
| | - Chika Miyagi-Shiohira
- Department of Regenerative Medicine, Graduate School of Medicine, University of the Ryukyus, Nishihara-cho, Okinawa 903-0215, Japan
| | - Hirofumi Noguchi
- Department of Regenerative Medicine, Graduate School of Medicine, University of the Ryukyus, Nishihara-cho, Okinawa 903-0215, Japan
| | - Takeshi Omasa
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima 770-8506, Japan; Department of Material and Life Science, Graduate School of Engineering, Osaka University, Yamadaoka, Suita, Osaka 565-0871, Japan
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15
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Defining essential genes for human pluripotent stem cells by CRISPR-Cas9 screening in haploid cells. Nat Cell Biol 2018; 20:610-619. [PMID: 29662178 DOI: 10.1038/s41556-018-0088-1] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 03/20/2018] [Indexed: 12/20/2022]
Abstract
The maintenance of pluripotency requires coordinated expression of a set of essential genes. Using our recently established haploid human pluripotent stem cells (hPSCs), we generated a genome-wide loss-of-function library targeting 18,166 protein-coding genes to define the essential genes in hPSCs. With this we could allude to an intrinsic bias of essentiality across cellular compartments, uncover two opposing roles for tumour suppressor genes and link autosomal-recessive disorders with growth-retardation phenotypes to early embryogenesis. hPSC-enriched essential genes mainly encode transcription factors and proteins related to cell-cycle and DNA-repair, revealing that a quarter of the nuclear factors are essential for normal growth. Our screen also led to the identification of growth-restricting genes whose loss of function provides a growth advantage to hPSCs, highlighting the role of the P53-mTOR pathway in this context. Overall, we have constructed an atlas of essential and growth-restricting genes in hPSCs, revealing key aspects of cellular essentiality and providing a reference for future studies on human pluripotency.
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16
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Churbanov A, Abrahamyan L. Preventing Common Hereditary Disorders through Time-Separated Twinning. BIONANOSCIENCE 2018. [DOI: 10.1007/s12668-017-0488-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Stem Cell Therapies for Neurodegenerative Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1056:61-84. [PMID: 29754175 DOI: 10.1007/978-3-319-74470-4_5] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Stem cell therapies have been proposed as a treatment option for neurodegenerative diseases, but the best stem cell source and therapeutic efficacy for neuroregeneration remain uncertain. Embryonic stem cells (ESCs) and neural stem cells (NSCs), which can efficiently generate neural cells, could be good candidates but they pose ethical and practical issues. Not only difficult to find the good source of those cells but also they alway pose immunorejection problem since they may not be an autologous cells. Even if we overcome the immunorejection problem, it has also been reported that transplantation of ESCs develop teratoma. Although adult stem cells are more accessible, they have a limited developmental potential. We developed technologies to increase potency of mesenchymal stem cells, which allow them to develop into neural cells, by over expression of the ESC gene, nanog. We also developed a small molecule compound, which significantly increases endogenous NSCs by peripheral administration, eliminating even the necessity of stem cell injection to the brain. These novel technologies may offer neuroregenerative therapies for Alzheimers disease (AD). However, we found that AD pathological condition prevent neurogenesis from NSCs. This chapter discusses how to overcome the problem associated stem cell therapy under AD pathology and introduces exosome as a tool to improve the modification of adult stem cells. These new technologies may open a door for the new era for AD therapy.
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18
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Wei L, Wei ZZ, Jiang MQ, Mohamad O, Yu SP. Stem cell transplantation therapy for multifaceted therapeutic benefits after stroke. Prog Neurobiol 2017; 157:49-78. [PMID: 28322920 PMCID: PMC5603356 DOI: 10.1016/j.pneurobio.2017.03.003] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 01/30/2017] [Accepted: 03/05/2017] [Indexed: 02/06/2023]
Abstract
One of the exciting advances in modern medicine and life science is cell-based neurovascular regeneration of damaged brain tissues and repair of neuronal structures. The progress in stem cell biology and creation of adult induced pluripotent stem (iPS) cells has significantly improved basic and pre-clinical research in disease mechanisms and generated enthusiasm for potential applications in the treatment of central nervous system (CNS) diseases including stroke. Endogenous neural stem cells and cultured stem cells are capable of self-renewal and give rise to virtually all types of cells essential for the makeup of neuronal structures. Meanwhile, stem cells and neural progenitor cells are well-known for their potential for trophic support after transplantation into the ischemic brain. Thus, stem cell-based therapies provide an attractive future for protecting and repairing damaged brain tissues after injury and in various disease states. Moreover, basic research on naïve and differentiated stem cells including iPS cells has markedly improved our understanding of cellular and molecular mechanisms of neurological disorders, and provides a platform for the discovery of novel drug targets. The latest advances indicate that combinatorial approaches using cell based therapy with additional treatments such as protective reagents, preconditioning strategies and rehabilitation therapy can significantly improve therapeutic benefits. In this review, we will discuss the characteristics of cell therapy in different ischemic models and the application of stem cells and progenitor cells as regenerative medicine for the treatment of stroke.
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Affiliation(s)
- Ling Wei
- Laboratories of Stem Cell Biology and Regenerative Medicine, Department of Neurology, Experimental Research Center and Neurological Disease Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA; Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Zheng Z Wei
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Michael Qize Jiang
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Osama Mohamad
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Shan Ping Yu
- Laboratories of Stem Cell Biology and Regenerative Medicine, Department of Neurology, Experimental Research Center and Neurological Disease Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA.
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19
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Xie X, Xu S, Pi P, Cheng J, Wen X, Liu X, Wang S. Dissipative particle dynamic simulation on the assembly and release of siRNA/polymer/gold nanoparticles based polyplex. AIChE J 2017. [DOI: 10.1002/aic.15961] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xiaona Xie
- The School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou510640 China
| | - Shouping Xu
- The School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou510640 China
| | - Pihui Pi
- The School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou510640 China
| | - Jiang Cheng
- The School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou510640 China
| | - Xiufang Wen
- The School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou510640 China
| | - Xuan Liu
- Chemical Engineering, Center of Biomedical Engineering and Rehabilitation ScienceInstitute for Micromanufacturing, Louisiana Tech UniversityRuston Louisiana71272 USA
| | - Shengnian Wang
- Chemical Engineering, Center of Biomedical Engineering and Rehabilitation ScienceInstitute for Micromanufacturing, Louisiana Tech UniversityRuston Louisiana71272 USA
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20
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Shi ZD, Soh CL, Zhu Z, Huangfu D. Genome Editing and Directed Differentiation of hPSCs for Interrogating Lineage Determinants in Human Pancreatic Development. J Vis Exp 2017:55267. [PMID: 28287608 PMCID: PMC5408939 DOI: 10.3791/55267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Interrogating gene function in self-renewing or differentiating human pluripotent stem cells (hPSCs) offers a valuable platform towards understanding human development and dissecting disease mechanisms in a dish. To capitalize on this potential application requires efficient genome-editing tools to generate hPSC mutants in disease-associated genes, as well as in vitro hPSC differentiation protocols to produce disease-relevant cell types that closely recapitulate their in vivo counterparts. An efficient genome-editing platform for hPSCs named iCRISPR has been developed through the TALEN-mediated targeting of a Cas9 expression cassette in the AAVS1 locus. Here, the protocols for the generation of inducible Cas9 hPSC lines using cells cultured in a chemically defined medium and a feeder-free condition are described. Detailed procedures for using the iCRISPR system for gene knockout or precise genetic alterations in hPSCs, either through non-homologous end joining (NHEJ) or via precise nucleotide alterations using a homology-directed repair (HDR) template, respectively, are included. These technical procedures include descriptions of the design, production, and transfection of CRISPR guide RNAs (gRNAs); the measurement of the CRISPR mutation rate by T7E1 or RFLP assays; and the establishment and validation of clonal mutant lines. Finally, we chronicle procedures for hPSC differentiation into glucose-responsive pancreatic β-like cells by mimicking in vivo pancreatic embryonic development. Combining iCRISPR technology with directed hPSC differentiation enables the systematic examination of gene function to further our understanding of pancreatic development and diabetes disease mechanisms.
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Affiliation(s)
- Zhong-Dong Shi
- Developmental Biology Program, Sloan Kettering Institute
| | - Chew-Li Soh
- Developmental Biology Program, Sloan Kettering Institute
| | - Zengrong Zhu
- Developmental Biology Program, Sloan Kettering Institute;
| | - Danwei Huangfu
- Developmental Biology Program, Sloan Kettering Institute;
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21
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Matsuoka AJ, Morrissey ZD, Zhang C, Homma K, Belmadani A, Miller CA, Chadly DM, Kobayashi S, Edelbrock AN, Tanaka‐Matakatsu M, Whitlon DS, Lyass L, McGuire TL, Stupp SI, Kessler JA. Directed Differentiation of Human Embryonic Stem Cells Toward Placode-Derived Spiral Ganglion-Like Sensory Neurons. Stem Cells Transl Med 2017; 6:923-936. [PMID: 28186679 PMCID: PMC5442760 DOI: 10.1002/sctm.16-0032] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 08/31/2016] [Accepted: 10/19/2016] [Indexed: 12/15/2022] Open
Abstract
The ability to generate spiral ganglion neurons (SGNs) from stem cells is a necessary prerequisite for development of cell-replacement therapies for sensorineural hearing loss. We present a protocol that directs human embryonic stem cells (hESCs) toward a purified population of otic neuronal progenitors (ONPs) and SGN-like cells. Between 82% and 95% of these cells express SGN molecular markers, they preferentially extend neurites to the cochlear nucleus rather than nonauditory nuclei, and they generate action potentials. The protocol follows an in vitro stepwise recapitulation of developmental events inherent to normal differentiation of hESCs into SGNs, resulting in efficient sequential generation of nonneuronal ectoderm, preplacodal ectoderm, early prosensory ONPs, late ONPs, and cells with cellular and molecular characteristics of human SGNs. We thus describe the sequential signaling pathways that generate the early and later lineage species in the human SGN lineage, thereby better describing key developmental processes. The results indicate that our protocol generates cells that closely replicate the phenotypic characteristics of human SGNs, advancing the process of guiding hESCs to states serving inner-ear cell-replacement therapies and possible next-generation hybrid auditory prostheses. © Stem Cells Translational Medicine 2017;6:923-936.
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Affiliation(s)
- Akihiro J. Matsuoka
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
- Department of Communication Sciences and DisordersChicagoILUSA
- Knowles Hearing CenterChicagoILUSA
| | | | - Chaoying Zhang
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
| | - Kazuaki Homma
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
- Knowles Hearing CenterChicagoILUSA
| | - Abdelhak Belmadani
- Department of Molecular Pharmacology and Biological ChemistryChicagoILUSA
| | | | - Duncan M. Chadly
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
| | - Shun Kobayashi
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
| | | | | | - Donna S. Whitlon
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
- Knowles Hearing CenterChicagoILUSA
| | - Ljuba Lyass
- Department of Biomedical EngineeringChicagoILUSA
| | | | - Samuel I. Stupp
- Department of MedicineChicagoILUSA
- Department of Biomedical EngineeringChicagoILUSA
- Simpson Querrey Institute for BioNanotechnologyChicagoILUSA
- Department of ChemistryNorthwestern University
- Department of Materials Science & EngineeringNorthwestern University
| | - John A. Kessler
- Department of NeurologyFeinberg School of Medicine, Northwestern UniversityChicagoILUSA
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22
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Fu J, Wiraja C, Chong R, Xu C, Wang DA. Real-time and non-invasive monitoring of embryonic stem cell survival during the development of embryoid bodies with smart nanosensor. Acta Biomater 2017; 49:358-367. [PMID: 27845273 DOI: 10.1016/j.actbio.2016.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/02/2016] [Accepted: 11/10/2016] [Indexed: 12/27/2022]
Abstract
Embryonic stem cells (ESCs)-derived embryoid body (EB) is a powerful model for the study of early embryonic development and the discovery of therapeutics for tissue regeneration. This article reports a smart nanosensor platform for labeling and tracking the survival and distribution of ESCs during the EB development in a real-time and non-invasive way. Compared with the cell tracker (i.e. DiO) and the green fluorescent protein (GFP), nanosensors provide the homogenous and highly-efficient ESC labeling. Following the internalization, intracellular nanosensors gradually release the non-fluorescent molecules that become fluorescent only in viable cells. This allows a continuous monitoring of ESC survival and distribution during the process of EB formation. Finally, we confirm that nanosensor labeling does not cause the significant influences to biological properties of the ESCs and EBs. STATEMENT OF SIGNIFICANCE The distribution pattern of viable embryonic stem cells (ESCs) within embryoid body (EB) is closely related with the maturation of EBs. Noninvasive and real-time monitoring of viable ESC distribution in EBs would allow researchers to optimize the culturing condition in time during the EB development and to select the suitable EBs for subsequent applications.
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Abstract
Fluorescent reporter and epitope-tagged human pluripotent stem cells (hPSCs) greatly facilitate studies on the pluripotency and differentiation characteristics of these cells. Unfortunately traditional procedures to generate such lines are hampered by a low targeting efficiency that necessitates a lengthy process of selection followed by the removal of the selection cassette. Here we describe a procedure to generate fluorescent reporter and epitope tagged hPSCs in an efficient one-step process using the CRISPR/Cas technology. Although the method described uses our recently developed iCRISPR platform, the protocols can be adapted for general use with CRISPR/Cas or other engineered nucleases. The transfection procedures described could also be used for additional applications, such as overexpression or lineage tracing studies.
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Affiliation(s)
- Nipun Verma
- Developmental Biology Program, Sloan Kettering Institute, 1275 York Avenue, New York, NY, 10065, USA
- Weill Graduate School of Medical Sciences at Cornell University/The Rockefeller University/Sloan Kettering Institute Tri-Institutional M.D.-Ph.D. Program, 1300 York Avenue, New York, NY, 10065, USA
| | - Zengrong Zhu
- Developmental Biology Program, Sloan Kettering Institute, 1275 York Avenue, New York, NY, 10065, USA
| | - Danwei Huangfu
- Developmental Biology Program, Sloan Kettering Institute, 1275 York Avenue, New York, NY, 10065, USA.
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24
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Shirzad H, Esmaeili F, Bakhshalizadeh S, Ebrahimie M, Ebrahimie E. Production of stable GFP-expressing neural cells from P19 embryonal carcinoma stem cells. Mol Cell Probes 2016; 32:46-54. [PMID: 28013042 DOI: 10.1016/j.mcp.2016.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 10/26/2016] [Accepted: 12/20/2016] [Indexed: 11/18/2022]
Abstract
Murine P19 embryonal carcinoma (EC) cells are convenient to differentiate into all germ layer derivatives. One of the advantages of P19 cells is that the exogenous DNA can be easily inserted into them. Here, at the first part of this study, we generated stable GFP-expressing P19 cells (P19-GFP+). FACS and western-blot analysis confirmed stable expression of GFP in the cells. We previously demonstrated the efficient induction of neuronal differentiation from mouse ES and EC cells by application of a neuroprotective drug, selegiline In the second part of this study selegiline was used to induce differentiation of P19-GFP+ into stable GFP-expressing neuron-like cells. Cresyl violet staining confirmed neuronal morphology of the differentiated cells. Furthermore, real-time PCR and immunoflourescence approved the expression of neuron specific markers. P19-GFP+ cells were able to survive, migrate and integrated into host tissues when transplanted to developing chick embryo CNS. The obtained live GFP-expressing cells can be used as an abundant source of developmentally pluripotent material for transplantation studies, investigating the cellular and molecular aspects of early differentiation.
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Affiliation(s)
- Hedayatollah Shirzad
- Cellular & Molecular Research Center, Shahrekord University of Medical Sciences, PO Box 8815713471, Shahrekord, Iran.
| | - Fariba Esmaeili
- Department of Biology, Faculty of Sciences, University of Isfahan, PO Box 8174673441, Isfahan, Iran.
| | - Shabnam Bakhshalizadeh
- Department of Anatomy, Tehran University of Medical Science, PO Box 1417653955, Tehran, Iran.
| | - Marzieh Ebrahimie
- Cellular & Molecular Research Center, Shahrekord University of Medical Sciences, PO Box 8815713471, Shahrekord, Iran.
| | - Esmaeil Ebrahimie
- School of Animal and Veterinary Sciences, The University of Adelaide, SA, Australia; School of Information Technology and Mathematical Sciences, Division of Information Technology, Engineering and the Environment, University of South Australia, Adelaide, Australia; Institute of Biotechnology, Shiraz University, Shiraz, Iran; School of Biological Sciences, Faculty of Science and Engineering, Flinders University, Adelaide, Australia; School of Medicine, The University of Adelaide, Adelaide, Australia.
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25
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Yedid N, Kalma Y, Malcov M, Amit A, Kariv R, Caspi M, Rosin-Arbesfeld R, Ben-Yosef D. The effect of a germline mutation in the APC gene on β-catenin in human embryonic stem cells. BMC Cancer 2016; 16:952. [PMID: 28010732 PMCID: PMC5180406 DOI: 10.1186/s12885-016-2809-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 09/23/2016] [Indexed: 12/14/2022] Open
Abstract
Background Most cases of colorectal cancer (CRC) are initiated by inactivation mutations in the APC gene, which is a negative regulator of the Wnt-β-catenin pathway. Patients with familial adenomatous polyposis (FAP) inherit a germline mutation in one APC allele, and loss of the second allele leads to the development of polyps that will turn malignant if not removed. It is not fully understood which molecular mechanisms are activated by APC loss and when the loss of the second APC allele occurs. Methods Two FAP human embryonic stem cell (hESCs) lines were derived from APC mutated embryos following pre-implantation genetic diagnosis (PGD) for FAP. These FAP-hESCs were cultured in vitro and following extended culture: 1) β-catenin expression was analyzed by Western blot analysis; 2) Wnt-β-catenin/TCF-mediated transcription luciferase assay was performed; 3) cellular localization of β-catenin was evaluated by immunoflorecence confocal microscopy; and 4) DNA sequencing of the APC gene was performed. Results We have established a novel human in-vitro model for studying malignant transformation, using hESCs that carry a germline mutation in the APC gene following PGD for FAP. Extended culturing of FAP1 hESCs led to activation of the Wnt signaling pathway, as demonstrated by enhanced β-catenin/TCF-mediated activity. Additionally, β-catenin showed a distinct perinuclear distribution in most (91 %) of the FAP1 hESCs high passage colonies. DNA sequencing of the whole gene detected several polymorphisms in FAP1 hESCs, however, no somatic mutations were discovered in the APC gene. On the other hand, no changes in β-catenin were detected in the FAP2 hESCs, demonstrating the natural diversity of the human FAP population. Conclusions Our results describe the establishment of novel hESC lines from FAP patients with a predisposition for cancer mutation. These cells can be maintained in culture for long periods of time and may serve as a platform for studying the initial molecular and cellular changes that occur during early stages of malignant transformation. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2809-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nofar Yedid
- Wolfe PGD-Stem Cell Lab, Racine IVF Unit, Lis Maternity Hospital, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Yael Kalma
- Wolfe PGD-Stem Cell Lab, Racine IVF Unit, Lis Maternity Hospital, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Mira Malcov
- Wolfe PGD-Stem Cell Lab, Racine IVF Unit, Lis Maternity Hospital, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ami Amit
- Wolfe PGD-Stem Cell Lab, Racine IVF Unit, Lis Maternity Hospital, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Revital Kariv
- Departmant of Gastroenterology, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Michal Caspi
- Department of Clinical Microbiology and Immunology, Tel-Aviv University, Tel Aviv, Israel
| | - Rina Rosin-Arbesfeld
- Department of Clinical Microbiology and Immunology, Tel-Aviv University, Tel Aviv, Israel
| | - Dalit Ben-Yosef
- Wolfe PGD-Stem Cell Lab, Racine IVF Unit, Lis Maternity Hospital, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel. .,Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel.
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Manipulation of OCT4 Levels in Human Embryonic Stem Cells Results in Induction of Differential Cell Types. Exp Biol Med (Maywood) 2016; 232:1368-80. [DOI: 10.3181/0703-rm-63] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
To fully understand self-renewal and pluripotency and their regulation in human embryonic stem cells (hESCs), it is necessary to generate genetically modified cells and analyze the consequences of elevated and reduced expression of genes. Genes expressed in hESCs using plasmid vectors, however, are subject to silencing. Moreover, hESCs have a low plating efficiency when dissociated to single cells, making creation of subcloned lines inefficient. In addition to overexpression experiments, it is important to perform loss-of-function studies, which can be achieved rapidly using RNA interference (RNAi). We report stable long-term expression of enhanced green fluorescent protein (eGFP) in hESCs using a lentiviral vector, and establishment of an eGFP-expressing subline (RG6) using manual dissection. To demonstrate the efficacy of RNAi in hESCs, an RNAi expression vector was used to achieve reduced expression of eGFP in hESCs. To evaluate the role of OCT4 in the regulation of hESC self-renewal and differentiation, a vector expressing a hairpin RNA targeting endogenous expression of OCT4 was constructed. In a novel experiment in hESCs, the OCT4 cDNA sequence was cloned into an expression vector to allow for the transient upregulation of OCT4 in hESCs. The ability to manipulate levels of OCT4 above and below enodogenous levels allows the determination of OCT4 function in hESCs. Specifically, reduced expression of OCT4 in hESCs promoted upregulation of markers indicative of mesoderm and endoderm differentiation, and elevated levels of OCT4 in hESCs promoted upregulation of markers indicative of endoderm derivatives. Thus, both upregulation and downregulation of Oct4 in hESCs results in differentiation, but with patterns distinct from parallel experiments in mice.
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Kramer N, Rosner M, Kovacic B, Hengstschläger M. Full biological characterization of human pluripotent stem cells will open the door to translational research. Arch Toxicol 2016; 90:2173-2186. [PMID: 27325309 DOI: 10.1007/s00204-016-1763-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 06/13/2016] [Indexed: 12/13/2022]
Abstract
Since the discovery of human embryonic stem cells (hESC) and human-induced pluripotent stem cells (hiPSC), great hopes were held for their therapeutic application including disease modeling, drug discovery screenings, toxicological screenings and regenerative therapy. hESC and hiPSC have the advantage of indefinite self-renewal, thereby generating an inexhaustible pool of cells with, e.g., specific genotype for developing putative treatments; they can differentiate into derivatives of all three germ layers enabling autologous transplantation, and via donor-selection they can express various genotypes of interest for better disease modeling. Furthermore, drug screenings and toxicological screenings in hESC and hiPSC are more pertinent to identify drugs or chemical compounds that are harmful for human, than a mouse model could predict. Despite continuing research in the wide field of therapeutic applications, further understanding of the underlying basic mechanisms of stem cell function is necessary. Here, we summarize current knowledge concerning pluripotency, self-renewal, apoptosis, motility, epithelial-to-mesenchymal transition and differentiation of pluripotent stem cells.
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Affiliation(s)
- Nina Kramer
- Institute of Medical Genetics, Medical University of Vienna, Währingerstrasse 10, 1090, Vienna, Austria
| | - Margit Rosner
- Institute of Medical Genetics, Medical University of Vienna, Währingerstrasse 10, 1090, Vienna, Austria
| | - Boris Kovacic
- Institute of Medical Genetics, Medical University of Vienna, Währingerstrasse 10, 1090, Vienna, Austria
| | - Markus Hengstschläger
- Institute of Medical Genetics, Medical University of Vienna, Währingerstrasse 10, 1090, Vienna, Austria.
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Nii T, Kohara H, Marumoto T, Sakuma T, Yamamoto T, Tani K. Single-Cell-State Culture of Human Pluripotent Stem Cells Increases Transfection Efficiency. Biores Open Access 2016; 5:127-36. [PMID: 27257519 PMCID: PMC4876534 DOI: 10.1089/biores.2016.0009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Efficient gene transfer into human pluripotent stem cells (hPSCs) holds great promise for regenerative medicine and pharmaceutical development. In the past decade, various methods were developed for gene transfer into hPSCs; however, hPSCs form tightly packed colonies, making gene transfer difficult. In this study, we established a stable culture method of hPSCs at a single-cell state to reduce cell density and investigated gene transfection efficiency followed by gene editing efficiency. hPSCs cultured in a single-cell state were transfected using nonliposomal transfection reagents with plasmid DNA or mRNA encoding enhanced green fluorescent protein. We found that most cells (DNA > 90%; mRNA > 99%) were transfected without the loss of undifferentiated PSC marker expression or pluripotency. Moreover, we demonstrated an efficient gene editing method using transcription activator-like effector nucleases (TALENs) targeting the adenomatous polyposis coli (APC) gene. Our new method may improve hPSC gene transfer techniques, thus facilitating their use for human regenerative medicine.
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Affiliation(s)
- Takenobu Nii
- Division of Molecular and Clinical Genetics, Medical Institute of Bioregulation, Kyushu University , Fukuoka, Japan
| | - Hiroshi Kohara
- Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo , Tokyo, Japan
| | - Tomotoshi Marumoto
- Division of Molecular and Clinical Genetics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.; Department of Advanced Molecular and Cell Therapy, Kyushu University Hospital, Fukuoka, Japan
| | - Tetsushi Sakuma
- Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University , Hiroshima, Japan
| | - Takashi Yamamoto
- Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University , Hiroshima, Japan
| | - Kenzaburo Tani
- Division of Molecular and Clinical Genetics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.; Project Division of ALA Advanced Medical Research, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.; Department of Advanced Molecular and Cell Therapy, Kyushu University Hospital, Fukuoka, Japan
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Li Q, Gomez-Lopez N, Drewlo S, Sanchez-Rodriguez E, Dai J, Puscheck EE, Rappolee DA. Development and Validation of a Rex1-RFP Potency Activity Reporter Assay That Quantifies Stress-Forced Potency Loss in Mouse Embryonic Stem Cells. Stem Cells Dev 2016; 25:320-8. [PMID: 26651054 PMCID: PMC4761856 DOI: 10.1089/scd.2015.0169] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 12/03/2015] [Indexed: 11/13/2022] Open
Abstract
Assays for embryonic stem cells (ESCs) of the blastocyst are needed to quantify stress-induced decreases of potent subpopulations. High-throughput screens (HTSs) of stressed ESCs quantify embryonic stress, diminishing laboratory animal needs. Normal or stress-induced ESC differentiation is marked by Rex1 potency factor loss. Potency reporter ESC assays were developed, using low-stress techniques to create transgenic ESCs. Rex1 and Oct4 promoters drove RFP and green fluorescent protein (GFP) expression, respectively. Lentivirus infection and fluorescence-activated cell sorting selection of ESCs obviated the need for stressful electroporation and antibiotic selection, respectively. We showed using immunoblots, microscopic analysis, flow cytometry, and fluorescence microplate reader that the response to stress of potency-reporter ESCs is similar to parental ESCs assayed by biochemical means. Stress caused a dose-dependent decrease in bright Rex1-RFP(+) ESCs and increase in Rex1 dim ESCs. At highest stress, ∼ 20% of bright Rex1-RFP cells are lost coinciding with a 2.8-fold increase in Rex1-RFP dim cells that approach 20%. This conversion of bright to dim cells tested by flow cytometry is commensurate with about 60% loss in fluorescence measured by microplate reader. Dose-dependent stress-induced Rex1-RFP and endogenous Rex1 protein decreases are similar. The data show that Rex1 reporter ESCs accurately report stress in a microplate reader-based HTS. The increasing dim Rex1 subpopulation size is balanced by the decreasing total ESC number during culture at multiple sorbitol doses. This is consistent with previous observations that stress forces potency decrease and differentiation increase to compensate for stress-induced diminished stem cell population growth.
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Affiliation(s)
- Quanwen Li
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan
- Program for Reproductive Sciences, Department of Physiology, Wayne State University School of Medicine, Detroit, Michigan
| | - Nardhy Gomez-Lopez
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan
| | - Sascha Drewlo
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan
| | - Elly Sanchez-Rodriguez
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan
| | - Jing Dai
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan
| | - Elizabeth E. Puscheck
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan
| | - Daniel A. Rappolee
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan
- Program for Reproductive Sciences, Department of Physiology, Wayne State University School of Medicine, Detroit, Michigan
- Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan
- Institutes for Environmental Health Science, Wayne State University School of Medicine, Detroit, Michigan
- Department of Biology, University of Windsor, Windsor, Canada
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Sharifi Tabar M, Hesaraki M, Esfandiari F, Sahraneshin Samani F, Vakilian H, Baharvand H. Evaluating Electroporation and Lipofectamine Approaches for Transient and Stable Transgene Expressions in Human Fibroblasts and Embryonic Stem Cells. CELL JOURNAL 2015; 17:438-50. [PMID: 26464815 PMCID: PMC4601864 DOI: 10.22074/cellj.2015.5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 08/06/2014] [Indexed: 12/01/2022]
Abstract
Objective Genetic modification of human embryonic stem cells (hESCs) is critical for
their extensive use as a fundamental tool for cell therapy and basic research. Despite
the fact that various methods such as lipofection and electroporation have been applied
to transfer the gene of interest (GOI) into the target cell line, however, there are few re-
ports that compare all parameters, which influence transfection efficiency. In this study,
we examine all parameters that affect the efficiency of electroporation and lipofection for
transient and long-term gene expression in three different cell lines to introduce the best
method and determinant factor.
Materials and Methods In this experimental study, both electroporation and lipofection
approaches were employed for genetic modification. pCAG-EGFP was applied for tran-
sient expression of green fluorescent protein in two genetically different hESC lines, Roy-
an H5 (XX) and Royan H6 (XY), as well as human foreskin fibroblasts (hFF). For long-term
EGFP expression VASA and OLIG2 promoters (germ cell and motoneuron specific genes,
respectively), were isolated and subsequently cloned into a pBluMAR5 plasmid backbone
to drive EGFP expression. Flow cytometry analysis was performed two days after trans-
fection to determine transient expression efficiency. Differentiation of drug resistant hESC
colonies toward primordial germ cells (PGCs) was conducted to confirm stable integration
of the transgene.
Results Transient and stable expression suggested a variable potential for different cell
lines against transfection. Analysis of parameters that influenced gene transformation ef-
ficiency revealed that the vector concentrations from 20-60 μg and the density of the sub-
jected cells (5×105and 1×106cells) were not as effective as the genetic background and
voltage rate. The present data indicated that in contrast to the circular form, the linearized
vector generated more distinctive drug resistant colonies.
Conclusion Electroporation was an efficient tool for genetic engineering of hESCs
compared to the chemical method. The genetic background of the subjected cell line
for transfection seemed to be a fundamental factor in each gene delivery method. For
each cell line, optimum voltage rate should be calculated as it has been shown to play
a crucial role in cell death and rate of gene delivery.
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Affiliation(s)
- Mehdi Sharifi Tabar
- Department of Molecular Systems Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mahdi Hesaraki
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Fereshteh Esfandiari
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Fazel Sahraneshin Samani
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Haghighat Vakilian
- Department of Molecular Systems Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
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Tomizawa M, Shinozaki F, Motoyoshi Y, Sugiyama T, Yamamoto S, Sueishi M. Dual gene expression in embryoid bodies derived from human induced pluripotent stem cells using episomal vectors. Tissue Eng Part A 2015; 20:3154-62. [PMID: 24980753 DOI: 10.1089/ten.tea.2014.0132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Transcription factors are essential for the differentiation of human induced pluripotent stem cells (iPS) into specialized cell types. Embryoid body (EB) formation promotes the differentiation of iPS cells. We sought to establish an efficient method of transfection and rotary culture to generate EBs that stably express two genes. The pMetLuc2-Reporter vector was transfected using FuGENE HD (FuGENE), Lipofectamine LTX (LTX), X-tremeGENE, or TransIT-2020 transfection reagents. The media was analyzed using a Metridia luciferase (MetLuc) assay. Transfections were performed on cells adherent to plates/dishes (adherent method) or suspended in the media (suspension method). The 201B7 cells transfected with episomal vectors were selected using G418 (200 μg/mL) or hygromycin B (300 μg/mL). Rotary culture was performed at 2.5 or 9.9 rpm. Efficiency of EB formation was compared among plates and dishes. Cell density was compared at 1.6×10(3),×10(4), and×10(5) cells/mL. The suspended method of transfection using the FuGENE HD reagent was the most efficient. The expression of pEBMulti/Met-Hyg was detected 11 days posttransfection. Double transformants were selected 6 days posttransfection with pEBNK/EGFP-Neo and pEBNK/Cherry-Hyg. Both EGFP and CherryPicker were expressed in all of the surviving cells. EBs were formed most efficiently from cells cultured at a density of 1.6×10(5) cells/mL in six-well plates or 6 cm dishes. The selected cells formed EBs. FuGENE-mediated transfection of plasmids using the suspension method was effective in transforming iPS cells. Furthermore, the episomal vectors enabled us to perform a stable double transfection of EB-forming iPS cells.
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Affiliation(s)
- Minoru Tomizawa
- 1 Department of Gastroenterology, National Hospital Organization, Shimoshizu Hospital , Yotsukaido City, Japan
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32
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Bradford AB, McNutt PM. Importance of being Nernst: Synaptic activity and functional relevance in stem cell-derived neurons. World J Stem Cells 2015; 7:899-921. [PMID: 26240679 PMCID: PMC4515435 DOI: 10.4252/wjsc.v7.i6.899] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/28/2015] [Accepted: 05/11/2015] [Indexed: 02/06/2023] Open
Abstract
Functional synaptogenesis and network emergence are signature endpoints of neurogenesis. These behaviors provide higher-order confirmation that biochemical and cellular processes necessary for neurotransmitter release, post-synaptic detection and network propagation of neuronal activity have been properly expressed and coordinated among cells. The development of synaptic neurotransmission can therefore be considered a defining property of neurons. Although dissociated primary neuron cultures readily form functioning synapses and network behaviors in vitro, continuously cultured neurogenic cell lines have historically failed to meet these criteria. Therefore, in vitro-derived neuron models that develop synaptic transmission are critically needed for a wide array of studies, including molecular neuroscience, developmental neurogenesis, disease research and neurotoxicology. Over the last decade, neurons derived from various stem cell lines have shown varying ability to develop into functionally mature neurons. In this review, we will discuss the neurogenic potential of various stem cells populations, addressing strengths and weaknesses of each, with particular attention to the emergence of functional behaviors. We will propose methods to functionally characterize new stem cell-derived neuron (SCN) platforms to improve their reliability as physiological relevant models. Finally, we will review how synaptically active SCNs can be applied to accelerate research in a variety of areas. Ultimately, emphasizing the critical importance of synaptic activity and network responses as a marker of neuronal maturation is anticipated to result in in vitro findings that better translate to efficacious clinical treatments.
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Beloor J, Ramakrishna S, Nam K, Seon Choi C, Kim J, Kim SH, Cho HJ, Shin H, Kim H, Kim SW, Lee SK, Kumar P. Effective gene delivery into human stem cells with a cell-targeting Peptide-modified bioreducible polymer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:2069-2079. [PMID: 25515928 DOI: 10.1002/smll.201402933] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Indexed: 06/04/2023]
Abstract
Stem cells are poorly permissive to non-viral gene transfection reagents. In this study, we explored the possibility of improving gene delivery into human embryonic (hESC) and mesenchymal (hMSC) stem cells by synergizing the activity of a cell-binding ligand with a polymer that releases nucleic acids in a cytoplasm-responsive manner. A 29 amino acid long peptide, RVG, targeting the nicotinic acetylcholine receptor (nAchR) was identified to bind both hMSC and H9-derived hESC. Conjugating RVG to a redox-sensitive biodegradable dendrimer-type arginine-grafted polymer (PAM-ABP) enabled nanoparticle formation with plasmid DNA without altering the environment-sensitive DNA release property and favorable toxicity profile of the parent polymer. Importantly, RVG-PAM-ABP quantitatively enhanced transfection into both hMSC and hESC compared to commercial transfection reagents like Lipofectamine 2000 and Fugene. ∼60% and 50% of hMSC and hESC were respectively transfected, and at increased levels on a per cell basis, without affecting pluripotency marker expression. RVG-PAM-ABP is thus a novel bioreducible, biocompatible, non-toxic, synthetic gene delivery system for nAchR-expressing stem cells. Our data also demonstrates that a cell-binding ligand like RVG can cooperate with a gene delivery system like PAM-ABP to enable transfection of poorly-permissive cells.
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Affiliation(s)
- Jagadish Beloor
- Department of Internal Medicine, Section of Infectious Diseases, Yale University School of Medicine, New Haven, CT, 06520, USA; Department of Bioengineering and Institute of Nano Science and Technology, Hanyang University, Seoul, 133-791, Korea
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Jabart E, Rangarajan S, Lieu C, Hack J, Conboy I, Sohn LL. A Microfluidic Method for the Selection of Undifferentiated Human Embryonic Stem Cells and in Situ Analysis. MICROFLUIDICS AND NANOFLUIDICS 2015; 18:955-966. [PMID: 33688311 PMCID: PMC7939131 DOI: 10.1007/s10404-014-1485-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Conventional cell-sorting methods such as fluorescence-activated cell sorting (FACS) or magnetic-activated cell sorting (MACS) can suffer from certain shortcomings such as lengthy sample preparation time, cell modification through antibody labeling, and cell damage due to exposure to high shear forces or to attachment of superparamagnetic Microbeads. In light of these drawbacks, we have recently developed a label-free, microfluidic platform that can not only select cells with minimal sample preparation but also enable analysis of cells in situ. We demonstrate the utility of our platform by successfully isolating undifferentiated human embryonic stem cells (hESCs) from a heterogeneous population based on the undifferentiated stem-cell marker SSEA-4. Importantly, we show that, in contrast to MACS or FACS, cells isolated by our method have very high viability (~90%). Overall, our platform technology could likely be applied to other cell types beyond hESCs and to a variety of heterogeneous cell populations in order to select and analyze cells of interest.
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Affiliation(s)
- E. Jabart
- Dept. of Bioengineering, University of California, Berkeley 94720, USA
| | - S. Rangarajan
- Dept. of Bioengineering, University of California, Berkeley 94720, USA
| | - C. Lieu
- School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - J. Hack
- Dept. of Mechanical Engineering, University of California, Berkeley 94720, USA
| | - I. Conboy
- Dept. of Bioengineering, University of California, Berkeley 94720, USA
| | - L. L. Sohn
- Dept. of Mechanical Engineering, University of California, Berkeley 94720, USA
- Author to whom correspondence should be addressed: , 510-642-5434
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35
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Reprogramming patient-derived cells to study the epilepsies. Nat Neurosci 2015; 18:360-6. [PMID: 25710838 DOI: 10.1038/nn.3944] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 01/08/2015] [Indexed: 02/07/2023]
Abstract
The epilepsies and related disorders of brain circuitry present significant challenges associated with the use of human cells to study disease mechanisms and develop new therapies. Some of these obstacles are being overcome through the use of induced pluripotent stem cells to obtain patient-derived neural cells for in vitro studies and as a source of cell-based treatments. The field is evolving rapidly with the addition of genome-editing approaches and expanding protocols for generating different neural cell types and three-dimensional tissues, but the application of these techniques to neurological disorders, and particularly to the epilepsies, is in its infancy. We discuss the progress made and the distinct advantages and limitations of using patient-derived cells to study or treat epilepsy, as well as critical future directions for the field.
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Abstract
With the recent advances in regenerative medicine, nanotechnology has created a niche for itself as a promising avenue in this field. Innumerable studies have been carried out by researchers using virus-based methodologies for the purpose of epigenetic reprogramming. Although this method is ostensibly safe, nonetheless, they are tagged with the risk of viral genome integration into the host genome or insertional mutagenesis. Transient transfection by the use of nanocarriers is the best way to overcome these problems. This review focuses on some of the significant works carried out by researchers utilizing nanocarrier systems that have shown promising results and thus created a landmark in the epigenetic reprogramming.
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TALEN/CRISPR-mediated eGFP knock-in add-on at the OCT4 locus does not impact differentiation of human embryonic stem cells towards endoderm. PLoS One 2014; 9:e114275. [PMID: 25474420 PMCID: PMC4256397 DOI: 10.1371/journal.pone.0114275] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 11/08/2014] [Indexed: 12/22/2022] Open
Abstract
Human embryonic stem cells (hESCs) have great promise as a source of unlimited transplantable cells for regenerative medicine. However, current progress on producing the desired cell type for disease treatment has been limited due to an insufficient understanding of the developmental processes that govern their differentiation, as well as a paucity of tools to systematically study differentiation in the lab. In order to overcome these limitations, cell-type reporter hESC lines will be required. Here we outline two strategies using Transcription Activator Like Effector Nucleases (TALENs) and Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-CRISPR-Associated protein (Cas) to create OCT4-eGFP knock-in add-on hESC lines. Thirty-one and forty-seven percent of clones were correctly modified using the TALEN and CRISPR-Cas9 systems, respectively. Further analysis of three correctly targeted clones demonstrated that the insertion of eGFP in-frame with OCT4 neither significantly impacted expression from the wild type allele nor did the fusion protein have a dramatically different biological stability. Importantly, the OCT4-eGFP fusion was easily detected using microscopy, flow cytometry and western blotting. The OCT4 reporter lines remained equally competent at producing CXCR4+ definitive endoderm that expressed a panel of endodermal genes. Moreover, the genomic modification did not impact the formation of NKX6.1+/SOX9+ pancreatic progenitor cells following directed differentiation. In conclusion, these findings demonstrate for the first time that CRISPR-Cas9 can be used to modify OCT4 and highlight the feasibility of creating cell-type specific reporter hESC lines utilizing genome-editing tools that facilitate homologous recombination.
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Mason EA, Mar JC, Laslett AL, Pera MF, Quackenbush J, Wolvetang E, Wells CA. Gene expression variability as a unifying element of the pluripotency network. Stem Cell Reports 2014; 3:365-77. [PMID: 25254348 PMCID: PMC4175554 DOI: 10.1016/j.stemcr.2014.06.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 06/18/2014] [Accepted: 06/20/2014] [Indexed: 12/16/2022] Open
Abstract
Heterogeneity is a hallmark of stem cell populations, in part due to the molecular differences between cells undergoing self-renewal and those poised to differentiate. We examined phenotypic and molecular heterogeneity in pluripotent stem cell populations, using public gene expression data sets. A high degree of concordance was observed between global gene expression variability and the reported heterogeneity of different human pluripotent lines. Network analysis demonstrated that low-variability genes were the most highly connected, suggesting that these are the most stable elements of the gene regulatory network and are under the highest regulatory constraints. Known drivers of pluripotency were among these, with lowest expression variability of POU5F1 in cells with the highest capacity for self-renewal. Variability of gene expression provides a reliable measure of phenotypic and molecular heterogeneity and predicts those genes with the highest degree of regulatory constraint within the pluripotency network. Gene expression variability is highly concordant with population heterogeneity Genes within the pluripotency network have distinct variability profiles Expression variability is a network property important for pluripotency
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Affiliation(s)
- Elizabeth A Mason
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane QSLD 4072, Australia
| | - Jessica C Mar
- The Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Andrew L Laslett
- Materials Science and Engineering, CSIRO, Clayton VIC 3168, Australia
| | - Martin F Pera
- The University of Melbourne, Florey Neuroscience and Mental Health Institute, and Walter and Eliza Hall Institute of Medical Research, Parkville VIC 3010, Australia
| | - John Quackenbush
- Dana-Farber Cancer Institute, Harvard University, Boston, MA 02215 USA
| | - Ernst Wolvetang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane QSLD 4072, Australia
| | - Christine A Wells
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane QSLD 4072, Australia; Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK.
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Huang S, Deshmukh H, Rajagopalan KK, Wang S. Gold nanoparticles electroporation enhanced polyplex delivery to mammalian cells. Electrophoresis 2014; 35:1837-45. [PMID: 24777715 PMCID: PMC4696390 DOI: 10.1002/elps.201300617] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 03/10/2014] [Accepted: 04/10/2014] [Indexed: 11/06/2022]
Abstract
Nonviral methods have been explored as the replacement of viral systems for their low toxicity and immunogenicity. However, they have yet to reach levels competitive to their viral counterparts. In this paper, we combined physical and chemical methods to improve the performance of polyplex delivery of DNA and small interfering RNA. Specifically, gold nanoparticles (AuNPs) were used to carry polyplex (a chemical approach) while electroporation (a physical approach) was applied for fast and direct cytosolic delivery. In this hybrid approach, cationic polymer molecules condense and/or protect genetic probes as usual while AuNPs help fix polycations to reduce their cytotoxicity and promote the transfection efficiency of electroporation. AuNPs of various sizes were first coated with polyethylenimine, which were further conjugated with DNA plasmids or small interfering RNA molecules to form AuNPs-polyplex. The hybrid nanoparticles were then mixed with cells and introduced into cell cytosol by electroporation. The delivery efficiency was evaluated with both model anchor cells (i.e., NIH/3T3) and suspension cells (i.e., K562), together with their impact on cell viability. We found that AuNP-polyplex showed 1.5∼2 folds improvement on the transfection efficiency with no significant increase of toxicity when compared to free plasmid delivery by electroporation alone. Such a combination of physical and chemical delivery concept may stimulate further exploration in the delivery of various therapeutic materials for both in vitro and in vivo applications.
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Affiliation(s)
- Shuyan Huang
- Department of Biomedical Engineering, Louisiana Tech University, Ruston, LA, USA
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Malecki M. 'Above all, do no harm': safeguarding pluripotent stem cell therapy against iatrogenic tumorigenesis. Stem Cell Res Ther 2014; 5:73. [PMID: 25158017 PMCID: PMC4076624 DOI: 10.1186/scrt462] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Human pluripotent stem cells are the foundations of regenerative medicine. However, the worst possible complication of using pluripotent stem cells in therapy could be iatrogenic cancerogenesis. Nevertheless, despite the rapid progress in the development of new techniques for induction of pluripotency and for directed differentiation, risks of cancerogenic transformation of therapeutically implanted pluripotent stem cells still persist. 'Above all, do no harm', as quoted from the Hippocratic Oath, is our ultimate creed. Therefore, the primary goal in designing any therapeutic regimes involving stem cells should be the elimination of any possibilities of their neoplasmic transformation. I review here the basic strategies that have been designed to attain this goal: sorting out undifferentiated, pluripotent stem cells with antibodies targeting surface-displayed biomarkers; sorting in differentiating cells, which express recombinant proteins as reporters; killing undifferentiated stem cells with toxic antibodies or antibody-guided toxins; eliminating undifferentiated stem cells with cytotoxic drugs; making potentially tumorigenic stem cells sensitive to pro-drugs by transformation with suicide-inducing genes; eradication of differentiation-refractive stem cells by self-triggered transgenic expression of human recombinant DNases. Every pluripotent undifferentiated stem cell poses a risk of neoplasmic transformation. Therefore, the aforementioned or other novel strategies that would safeguard against iatrogenic transformation of these stem cells should be considered for incorporation into every stem cell therapy trial.
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Vishwakarma SK, Bardia A, Tiwari SK, Paspala SA, Khan AA. Current concept in neural regeneration research: NSCs isolation, characterization and transplantation in various neurodegenerative diseases and stroke: A review. J Adv Res 2014; 5:277-94. [PMID: 25685495 PMCID: PMC4294738 DOI: 10.1016/j.jare.2013.04.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 04/10/2013] [Accepted: 04/28/2013] [Indexed: 12/14/2022] Open
Abstract
Since last few years, an impressive amount of data has been generated regarding the basic in vitro and in vivo biology of neural stem cells (NSCs) and there is much far hope for the success in cell replacement therapies for several human neurodegenerative diseases and stroke. The discovery of adult neurogenesis (the endogenous production of new neurons) in the mammalian brain more than 40 years ago has resulted in a wealth of knowledge about stem cells biology in neuroscience research. Various studies have done in search of a suitable source for NSCs which could be used in animal models to understand the basic and transplantation biology before treating to human. The difficulties in isolating pure population of NSCs limit the study of neural stem behavior and factors that regulate them. Several studies on human fetal brain and spinal cord derived NSCs in animal models have shown some interesting results for cell replacement therapies in many neurodegenerative diseases and stroke models. Also the methods and conditions used for in vitro culture of these cells provide an important base for their applicability and specificity in a definite target of the disease. Various important developments and modifications have been made in stem cells research which is needed to be more specified and enrolment in clinical studies using advanced approaches. This review explains about the current perspectives and suitable sources for NSCs isolation, characterization, in vitro proliferation and their use in cell replacement therapies for the treatment of various neurodegenerative diseases and strokes.
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Affiliation(s)
- Sandeep K. Vishwakarma
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
- Paspala Advanced Neural (PAN) Research Foundation, Narayanguda, Hyderabad, 500 029 Andhra Pradesh, India
| | - Avinash Bardia
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
| | - Santosh K. Tiwari
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
| | - Syed A.B. Paspala
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
- Paspala Advanced Neural (PAN) Research Foundation, Narayanguda, Hyderabad, 500 029 Andhra Pradesh, India
| | - Aleem A. Khan
- Centre for Liver Research and Diagnostics, Deccan College of Medical Sciences, Kanchanbagh, Hyderabad, 500 058 Andhra Pradesh, India
- Paspala Advanced Neural (PAN) Research Foundation, Narayanguda, Hyderabad, 500 029 Andhra Pradesh, India
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Ono T, Suzuki Y, Kato Y, Fujita R, Araki T, Yamashita T, Kato H, Torii R, Sato N. A single-cell and feeder-free culture system for monkey embryonic stem cells. PLoS One 2014; 9:e88346. [PMID: 24505480 PMCID: PMC3915054 DOI: 10.1371/journal.pone.0088346] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 01/11/2014] [Indexed: 12/20/2022] Open
Abstract
Primate pluripotent stem cells (PSCs), including embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), hold great potential for research and application in regenerative medicine and drug discovery. To maximize primate PSC potential, a practical system is required for generating desired functional cells and reproducible differentiation techniques. Much progress regarding their culture systems has been reported to date; however, better methods would still be required for their practical use, particularly in industrial and clinical fields. Here we report a new single-cell and feeder-free culture system for primate PSCs, the key feature of which is an originally formulated serum-free medium containing FGF and activin. In this culture system, cynomolgus monkey ESCs can be passaged many times by single-cell dissociation with traditional trypsin treatment and can be propagated with a high proliferation rate as a monolayer without any feeder cells; further, typical PSC properties and genomic stability can be retained. In addition, it has been demonstrated that monkey ESCs maintained in the culture system can be used for various experiments such as in vitro differentiation and gene manipulation. Thus, compared with the conventional culture system, monkey ESCs grown in the aforementioned culture system can serve as a cell source with the following practical advantages: simple, stable, and easy cell maintenance; gene manipulation; cryopreservation; and desired differentiation. We propose that this culture system can serve as a reliable platform to prepare primate PSCs useful for future research and application.
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Affiliation(s)
- Takashi Ono
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
- * E-mail:
| | - Yutaka Suzuki
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Yosuke Kato
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Risako Fujita
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Toshihiro Araki
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Tomoko Yamashita
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
| | - Hidemasa Kato
- Division of Developmental Biology, Research Center for Genomic Medicine, Saitama Medical University, Hidaka, Saitama, Japan
| | - Ryuzo Torii
- Research Center for Animal Life Science, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Naoya Sato
- Discovery Molecular Pharmacology Department, Discovery Screening Center, Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan
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Abstract
One of the great advantages of embryonic stem (ES) cells over other cell types is their accessibility to genetic manipulation. They can easily undergo genetic modifications while remaining pluripotent, and can be selectively propagated, allowing the clonal expansion of genetically altered cells in culture. Since the first isolation of ES cells in mice, many effective techniques have been developed for gene delivery and manipulation of ES cells. These include transfection, electroporation, and infection protocols, as well as different approaches for inserting, deleting, or changing the expression of genes. These methods proved to be extremely useful in mouse ES cells, for monitoring and directing differentiation, discovering unknown genes, and studying their function, and are now being extensively implemented in human ES cells (HESCs). This chapter describes the different approaches and methodologies that have been applied for the genetic manipulation of HESCs and their applications. Detailed protocols for generating clones of genetically modified HESCs by transfection, electroporation, and infection will be described, with special emphasis on the important technical details that are required for this purpose. All protocols are equally effective in human-induced pluripotent stem (iPS) cells.
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Affiliation(s)
- Rachel Eiges
- Stem Cell Research Laboratory, Medical Genetics Institute, Shaare Zedek Medical Center, 3235, Jerusalem, 91031, Israel,
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Lee KC, Wong WK, Feng B. Decoding the Pluripotency Network: The Emergence of New Transcription Factors. Biomedicines 2013; 1:49-78. [PMID: 28548056 PMCID: PMC5423462 DOI: 10.3390/biomedicines1010049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 12/10/2013] [Accepted: 12/11/2013] [Indexed: 12/25/2022] Open
Abstract
Since the successful isolation of mouse and human embryonic stem cells (ESCs) in the past decades, massive investigations have been conducted to dissect the pluripotency network that governs the ability of these cells to differentiate into all cell types. Beside the core Oct4-Sox2-Nanog circuitry, accumulating regulators, including transcription factors, epigenetic modifiers, microRNA and signaling molecules have also been found to play important roles in preserving pluripotency. Among the various regulations that orchestrate the cellular pluripotency program, transcriptional regulation is situated in the central position and appears to be dominant over other regulatory controls. In this review, we would like to summarize the recent advancements in the accumulating findings of new transcription factors that play a critical role in controlling both pluripotency network and ESC identity.
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Affiliation(s)
- Kai Chuen Lee
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, Room 105A, 1/F, Lo Kwee-Seong Integrated Biomedical Sciences Building, Area 39, Shatin, N.T., Hong Kong, China.
| | - Wing Ki Wong
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, Room 105A, 1/F, Lo Kwee-Seong Integrated Biomedical Sciences Building, Area 39, Shatin, N.T., Hong Kong, China.
| | - Bo Feng
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, Room 105A, 1/F, Lo Kwee-Seong Integrated Biomedical Sciences Building, Area 39, Shatin, N.T., Hong Kong, China.
- SBS Core Laboratory, Shenzhen Research Institute, the Chinese University of Hong Kong, 4/F CUHK Shenzhen Research Institute Building, No.10, 2nd Yuexing Road, Nanshan District, Shenzhen 518057, China.
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Ren Y, Wu H, Wang X, Xue N, Liang H, Liu D. Analysis of the stem cell characteristics of adult stem cells from Arbas white Cashmere goat. Biochem Biophys Res Commun 2013; 448:121-8. [PMID: 24333446 DOI: 10.1016/j.bbrc.2013.12.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 12/06/2013] [Indexed: 10/25/2022]
Abstract
Studies have shown that multipotent adult stem cells possess differentiation characteristics similar to embryonic stem cells and pluripotent stem cells. We aimed to explore these similarities further by examining the expression of the pluripotency and stemness biomarkers, AKP, IL-6, Nanog, Oct-4, Rex-1, Sox-2 and TERT, as well as the triploblastic biomarkers, Sox-1, Myod1 and Gata-6 in adipose-derived stem cells (ADSCs), bone marrow stem cells (BMSCs) and muscle-derived satellite cells (MDSCs). These were isolated from adult Arbas white Cashmere goats and cultured in vitro. Immunocytochemistry, reverse transcription quantitative PCR and Western blotting were used to analyze the protein and mRNA expression of the markers. To investigate the ability of ADSCs, BMSCs and MDSCs to differentiate and cause tumors in vivo they were injected into immunodeficient mice (NOD-SCID). All results were compared to those for mouse embryonic stem cells (mESCs). Immunocytochemistry showed that AKP, IL-6, Nanog, Oct-4, Rex-1 and TERT were expressed in ADSCs, BMSCs and MDSCs, whereas Sox-2 was not. In ADSCs, the expression of IL-6 mRNA was relatively high, followed by Nanog and Oct-4, while Rex-1 and TERT expression were the lowest (P<0.01). In BMSCs, the expression of Rex-1 was relatively high, followed by IL-6, while Oct-4, Nanog and TERT were comparatively low (P<0.01). In MDSCs, the expression of IL-6, Nanog and Oct-4 were relatively high, while TERT was comparatively low (P<0.01). However, no expression of Sox-2 mRNA was detected in any of the three cell lines. The expression of Sox-1, Myod1 and Gata-6 was observed to different degrees in all three cell lines (P<0.01); the expression pattern in MDSCs was different from that in ADSCs and BMSCs. Western blotting indicated that no expression of Sox-2 and Rex-1 protein occurred in ADSCs, BMSCs and MDSCs, while the other five proteins were all expressed to different degrees (P<0.01); the expression pattern was consistent with the mRNA results. In contrast to the mESCs, no teratoma tissue or triploblastic differentiation appendages were formed in the immunodeficient mice after injection of ADSCs, BMSCs and MDSCs. Our results suggest that the three adult goat stem cell types are non-oncogenic and have stemness characteristics similar to embryonic stem cells. Of these, MDSCs were found to exhibit the most ESC-like properties and would make the best candidates for clinical application.
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Affiliation(s)
- Yu Ren
- Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot 010021, China
| | - Haiqing Wu
- Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot 010021, China
| | - Xiao Wang
- Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot 010021, China
| | - Na Xue
- Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot 010021, China
| | - Hao Liang
- Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot 010021, China
| | - Dongjun Liu
- Key Laboratory of Mammalian Reproductive Biology and Biotechnology Ministry of Education, Inner Mongolia University, Inner Mongolia, Hohhot 010021, China.
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Tan X, Xu X, Elkenani M, Smorag L, Zechner U, Nolte J, Engel W, Pantakani DK. Zfp819, a novel KRAB-zinc finger protein, interacts with KAP1 and functions in genomic integrity maintenance of mouse embryonic stem cells. Stem Cell Res 2013; 11:1045-59. [DOI: 10.1016/j.scr.2013.07.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 07/09/2013] [Accepted: 07/22/2013] [Indexed: 01/12/2023] Open
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Stem cell reprogramming: generation of patient-specific stem cells by somatic cell nuclear reprogramming. DRUG DISCOVERY TODAY. TECHNOLOGIES 2013; 5:e105-48. [PMID: 24125543 DOI: 10.1016/j.ddtec.2008.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Choi KH, Park JK, Kim HS, Uh KJ, Son DC, Lee CK. Epigenetic changes of lentiviral transgenes in porcine stem cells derived from embryonic origin. PLoS One 2013; 8:e72184. [PMID: 23977247 PMCID: PMC3747048 DOI: 10.1371/journal.pone.0072184] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 07/05/2013] [Indexed: 01/07/2023] Open
Abstract
Because of the physiological and immunological similarities that exist between pigs and humans, porcine pluripotent cell lines have been identified as important candidates for preliminary studies on human disease as well as a source for generating transgenic animals. Therefore, the establishment and characterization of porcine embryonic stem cells (pESCs), along with the generation of stable transgenic cell lines, is essential. In this study, we attempted to efficiently introduce transgenes into Epiblast stem cell (EpiSC)-like pESCs. Consequently, a pluripotent cell line could be derived from a porcine-hatched blastocyst. Enhanced green fluorescent protein (EGFP) was successfully introduced into the cells via lentiviral vectors under various multiplicities of infection, with pluripotency and differentiation potential unaffected after transfection. However, EGFP expression gradually declined during extended culture. This silencing effect was recovered by in vitro differentiation and treatment with 5-azadeoxycytidine. This phenomenon was related to DNA methylation as determined by bisulfite sequencing. In conclusion, we were able to successfully derive EpiSC-like pESCs and introduce transgenes into these cells using lentiviral vectors. This cell line could potentially be used as a donor cell source for transgenic pigs and may be a useful tool for studies involving EpiSC-like pESCs as well as aid in the understanding of the epigenetic regulation of transgenes.
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Affiliation(s)
- Kwang-Hwan Choi
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute for Agriculture and Life Science, Seoul National University, Seoul, Korea
| | - Jin-Kyu Park
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute for Agriculture and Life Science, Seoul National University, Seoul, Korea
| | - Hye-Sun Kim
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute for Agriculture and Life Science, Seoul National University, Seoul, Korea
| | - Kyung-Jun Uh
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute for Agriculture and Life Science, Seoul National University, Seoul, Korea
| | - Dong-Chan Son
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute for Agriculture and Life Science, Seoul National University, Seoul, Korea
| | - Chang-Kyu Lee
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute for Agriculture and Life Science, Seoul National University, Seoul, Korea
- * E-mail:
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50
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Stable transfection using episomal vectors to create modified human embryonic stem cells. Methods Mol Biol 2013. [PMID: 23546763 DOI: 10.1007/978-1-62703-348-0_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Gene delivery into stem cells can be achieved using viral and nonviral methods. Nonviral methods are more appealing and the use of episomal vectors that do not integrate into the genome enables expression of transgene that are not subject to genomic loci effects that could affect expression levels. Here we describe in detail transfection and stable pooled clone creation of human embryonic stem cells with episomal vectors.
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