1
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Chen Y, Zhang L, Shi X, Han J, Chen J, Zhang X, Xie D, Li Z, Niu X, Chen L, Yang C, Sun X, Zhou T, Su P, Li N, Greenblatt MB, Ke R, Huang J, Chen Z, Xu R. Characterization of the Nucleus Pulposus Progenitor Cells via Spatial Transcriptomics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2303752. [PMID: 38311573 PMCID: PMC11095158 DOI: 10.1002/advs.202303752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 01/11/2024] [Indexed: 02/06/2024]
Abstract
Loss of refreshment in nucleus pulposus (NP) cellularity leads to intervertebral disc (IVD) degeneration. Nevertheless, the cellular sequence of NP cell differentiation remains unclear, although an increasing body of literature has identified markers of NP progenitor cells (NPPCs). Notably, due to their fragility, the physical enrichment of NP-derived cells has limited conventional transcriptomic approaches in multiple studies. To overcome this limitation, a spatially resolved transcriptional atlas of the mouse IVD is generated via the 10x Genomics Visium platform dividing NP spots into two clusters. Based on this, most reported NPPC-markers, including Cathepsin K (Ctsk), are rare and predominantly located within the NP-outer subset. Cell lineage tracing further evidence that a small number of Ctsk-expressing cells generate the entire adult NP tissue. In contrast, Tie2, which has long suggested labeling NPPCs, is actually neither expressed in NP subsets nor labels NPPCs and their descendants in mouse models; consistent with this, an in situ sequencing (ISS) analysis validated the absence of Tie2 in NP tissue. Similarly, no Tie2-cre-mediated labeling of NPPCs is observed in an IVD degenerative mouse model. Altogether, in this study, the first spatial transcriptomic map of the IVD is established, thereby providing a public resource for bone biology.
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Affiliation(s)
- Yu Chen
- The First Affiliated Hospital of Xiamen University‐ICMRS Collaborating Center for Skeletal Stem CellsState Key Laboratory of Cellular Stress BiologyFaculty of Medicine and Life SciencesSchool of MedicineXiamen UniversityXiamen361102China
- Xiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen361102China
| | - Long Zhang
- The First Affiliated Hospital of Xiamen University‐ICMRS Collaborating Center for Skeletal Stem CellsState Key Laboratory of Cellular Stress BiologyFaculty of Medicine and Life SciencesSchool of MedicineXiamen UniversityXiamen361102China
- Xiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen361102China
| | - Xueqing Shi
- The First Affiliated Hospital of Xiamen University‐ICMRS Collaborating Center for Skeletal Stem CellsState Key Laboratory of Cellular Stress BiologyFaculty of Medicine and Life SciencesSchool of MedicineXiamen UniversityXiamen361102China
- Xiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen361102China
| | - Jie Han
- The First Affiliated Hospital of Xiamen University‐ICMRS Collaborating Center for Skeletal Stem CellsState Key Laboratory of Cellular Stress BiologyFaculty of Medicine and Life SciencesSchool of MedicineXiamen UniversityXiamen361102China
- Xiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen361102China
| | - Jingyu Chen
- Gene Denovo Biotechnology CoGuangzhou510006China
| | - Xinya Zhang
- School of Medicine and School of Biomedical SciencesHuaqiao UniversityQuanzhou362000China
| | - Danlin Xie
- School of Medicine and School of Biomedical SciencesHuaqiao UniversityQuanzhou362000China
- School of Life SciencesWestlake UniversityHangzhou310030China
| | - Zan Li
- The First Affiliated Hospital of Xiamen University‐ICMRS Collaborating Center for Skeletal Stem CellsState Key Laboratory of Cellular Stress BiologyFaculty of Medicine and Life SciencesSchool of MedicineXiamen UniversityXiamen361102China
- Xiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen361102China
| | - Xing Niu
- China Medical UniversityShenyangLiaoning110122China
| | - Lijie Chen
- China Medical UniversityShenyangLiaoning110122China
| | - Chaoyong Yang
- Department of Chemical BiologyCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China
| | - Xiujie Sun
- Department of Obstetrics and GynecologySchool of MedicineXiang'an Hospital of Xiamen UniversityXiamen UniversityXiamen361102China
| | - Taifeng Zhou
- Department of Spine SurgeryGuangdong Provincial Key Laboratory of Orthopedics and TraumatologyThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhou510080China
| | - Peiqiang Su
- Department of Spine SurgeryGuangdong Provincial Key Laboratory of Orthopedics and TraumatologyThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhou510080China
| | - Na Li
- The First Affiliated Hospital of Xiamen University‐ICMRS Collaborating Center for Skeletal Stem CellsState Key Laboratory of Cellular Stress BiologyFaculty of Medicine and Life SciencesSchool of MedicineXiamen UniversityXiamen361102China
- Xiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen361102China
| | - Matthew B. Greenblatt
- Department of Pathology and Laboratory MedicineWeill Cornell Medical CollegeNew YorkNY10065USA
- Research DivisionHospital for Special SurgeryNew YorkNY10065USA
| | - Rongqin Ke
- School of Medicine and School of Biomedical SciencesHuaqiao UniversityQuanzhou362000China
| | - Jianming Huang
- Department of OrthopedicsChengong Hospital (the 73th Group Military Hospital of People's Liberation Army) affiliated to Xiamen UniversityXiamen361000China
| | - Zhe‐Sheng Chen
- College of Pharmacy and Health SciencesSt. John's UniversityNew YorkNY11439USA
| | - Ren Xu
- The First Affiliated Hospital of Xiamen University‐ICMRS Collaborating Center for Skeletal Stem CellsState Key Laboratory of Cellular Stress BiologyFaculty of Medicine and Life SciencesSchool of MedicineXiamen UniversityXiamen361102China
- Xiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen361102China
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2
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Oke A, Manohar SM. Dynamic Roles of Signaling Pathways in Maintaining Pluripotency of Mouse and Human Embryonic Stem Cells. Cell Reprogram 2024; 26:46-56. [PMID: 38635924 DOI: 10.1089/cell.2024.0002] [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] [Indexed: 04/20/2024] Open
Abstract
Culturing of mouse and human embryonic stem cells (ESCs) in vitro was a major breakthrough in the field of stem cell biology. These models gained popularity very soon mainly due to their pluripotency. Evidently, the ESCs of mouse and human origin share typical phenotypic responses due to their pluripotent nature, such as self-renewal capacity and potency. The conserved network of core transcription factors regulates these responses. However, significantly different signaling pathways and upstream transcriptional networks regulate expression and activity of these core pluripotency factors in ESCs of both the species. In fact, ample evidence shows that a pathway, which maintains pluripotency in mouse ESCs, promotes differentiation in human ESCs. In this review, we discuss the role of canonical signaling pathways implicated in regulation of pluripotency and differentiation particularly in mouse and human ESCs. We believe that understanding these distinct and at times-opposite mechanisms-is critical for the progress in the field of stem cell biology and regenerative medicine.
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Affiliation(s)
- Anagha Oke
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS (Deemed-to-Be) University, Mumbai, Maharashtra, India
| | - Sonal M Manohar
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS (Deemed-to-Be) University, Mumbai, Maharashtra, India
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3
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Abstract
O-GlcNAcylation is a dynamic post-translational modification performed by two opposing enzymes: O-GlcNAc transferase and O-GlcNAcase. O-GlcNAcylation is generally believed to act as a metabolic integrator in numerous signalling pathways. The stoichiometry of this modification is tightly controlled throughout all stages of development, with both hypo/hyper O-GlcNAcylation resulting in broad defects. In this Primer, we discuss the role of O-GlcNAcylation in developmental processes from stem cell maintenance and differentiation to cell and tissue morphogenesis.
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Affiliation(s)
- Ignacy Czajewski
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Daan M F van Aalten
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
- Institute of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha 410000, China
- Department of Molecular Biology and Genetics, University of Aarhus, Aarhus 8000, Denmark
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4
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Han D, Liu G, Oh Y, Oh S, Yang S, Mandjikian L, Rani N, Almeida MC, Kosik KS, Jang J. ZBTB12 is a molecular barrier to dedifferentiation in human pluripotent stem cells. Nat Commun 2023; 14:632. [PMID: 36759523 PMCID: PMC9911396 DOI: 10.1038/s41467-023-36178-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 01/18/2023] [Indexed: 02/11/2023] Open
Abstract
Development is generally viewed as one-way traffic of cell state transition from primitive to developmentally advanced states. However, molecular mechanisms that ensure the unidirectional transition of cell fates remain largely unknown. Through exact transcription start site mapping, we report an evolutionarily conserved BTB domain-containing zinc finger protein, ZBTB12, as a molecular barrier for dedifferentiation of human pluripotent stem cells (hPSCs). Single-cell RNA sequencing reveals that ZBTB12 is essential for three germ layer differentiation by blocking hPSC dedifferentiation. Mechanistically, ZBTB12 fine-tunes the expression of human endogenous retrovirus H (HERVH), a primate-specific retrotransposon, and targets specific transcripts that utilize HERVH as a regulatory element. In particular, the downregulation of HERVH-overlapping long non-coding RNAs (lncRNAs) by ZBTB12 is necessary for a successful exit from a pluripotent state and lineage derivation. Overall, we identify ZBTB12 as a molecular barrier that safeguards the unidirectional transition of metastable stem cell fates toward developmentally advanced states.
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Affiliation(s)
- Dasol Han
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA
| | - Guojing Liu
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA.,Novogene Co., Ltd, Beijing, China
| | - Yujeong Oh
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea
| | - Seyoun Oh
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea
| | - Seungbok Yang
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea
| | - Lori Mandjikian
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA
| | - Neha Rani
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA.,Department of Biological Sciences & Bioengineering, Indian Institute of Technology, Kanpur, India
| | - Maria C Almeida
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA.,Federal University of ABC, Center for Natural and Human Sciences São Bernardo do Campo, Santo André, Brazil
| | - Kenneth S Kosik
- Neuroscience Research Institute, Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA, USA.
| | - Jiwon Jang
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Korea.
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5
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Bedell ML, Torres AL, Hogan KJ, Wang Z, Wang B, Melchiorri AJ, Grande-Allen KJ, Mikos AG. Human gelatin-based composite hydrogels for osteochondral tissue engineering and their adaptation into bioinks for extrusion, inkjet, and digital light processing bioprinting. Biofabrication 2022; 14:10.1088/1758-5090/ac8768. [PMID: 35931060 PMCID: PMC9633045 DOI: 10.1088/1758-5090/ac8768] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 08/04/2022] [Indexed: 11/11/2022]
Abstract
The investigation of novel hydrogel systems allows for the study of relationships between biomaterials, cells, and other factors within osteochondral tissue engineering. Three-dimensional (3D) printing is a popular research method that can allow for further interrogation of these questions via the fabrication of 3D hydrogel environments that mimic tissue-specific, complex architectures. However, the adaptation of promising hydrogel biomaterial systems into 3D-printable bioinks remains a challenge. Here, we delineated an approach to that process. First, we characterized a novel methacryloylated gelatin composite hydrogel system and assessed how calcium phosphate and glycosaminoglycan additives upregulated bone- and cartilage-like matrix deposition and certain genetic markers of differentiation within human mesenchymal stem cells (hMSCs), such as RUNX2 and SOX9. Then, new assays were developed and utilized to study the effects of xanthan gum and nanofibrillated cellulose, which allowed for cohesive fiber deposition, reliable droplet formation, and non-fracturing digital light processing (DLP)-printed constructs within extrusion, inkjet, and DLP techniques, respectively. Finally, these bioinks were used to 3D print constructs containing viable encapsulated hMSCs over a 7 d period, where DLP printed constructs facilitated the highest observed increase in cell number over 7 d (∼2.4×). The results presented here describe the promotion of osteochondral phenotypes via these novel composite hydrogel formulations, establish their ability to bioprint viable, cell-encapsulating constructs using three different 3D printing methods on multiple bioprinters, and document how a library of modular bioink additives affected those physicochemical properties important to printability.
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Affiliation(s)
| | | | - Katie J. Hogan
- Department of Bioengineering, Rice University, Houston, TX
- Medical Scientist Training Program, Baylor College of Medicine, Houston, TX
| | - Ziwen Wang
- Department of Bioengineering, Rice University, Houston, TX
| | - Bonnie Wang
- Department of Bioengineering, Rice University, Houston, TX
| | | | | | - Antonios G. Mikos
- Department of Bioengineering, Rice University, Houston, TX
- NIBIB/NIH Center for Engineering Complex Tissues, USA
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6
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Hall ML, Givens S, Santosh N, Iacovino M, Kyba M, Ogle BM. Laminin 411 mediates endothelial specification via multiple signaling axes that converge on β-catenin. Stem Cell Reports 2022; 17:569-583. [PMID: 35120622 PMCID: PMC9039757 DOI: 10.1016/j.stemcr.2022.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 11/24/2022] Open
Abstract
The extracellular matrix (ECM) provides essential cues to promote endothelial specification during tissue development in vivo; correspondingly, ECM is considered essential for endothelial differentiation outside of the body. However, systematic studies to assess the precise contribution of individual ECM proteins to endothelial differentiation have not been conducted. Further, the multi-component nature of differentiation protocols makes it challenging to study the underlying mechanisms by which the ECM contributes to cell fate. In this study, we determined that Laminin 411 alone increases endothelial differentiation of induced pluripotent stem cells over collagen I or Matrigel. The effect of ECM was shown to be independent of vascular endothelial growth factor (VEGF) binding capacity. We also show that ECM-guided endothelial differentiation is dependent on activation of focal adhesion kinase (FAK), integrin-linked kinase (ILK), Notch, and β-catenin pathways. Our results indicate that ECM contributes to endothelial differentiation through multiple avenues, which converge at the expression of active β-catenin.
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Affiliation(s)
- Mikayla L Hall
- Department of Biomedical Engineering, University of Minnesota, Twin Cities, 7-130 Nils Hasselmo Hall, 312 Church St. SE, Minneapolis, MN 55455, USA; Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Sophie Givens
- Department of Biomedical Engineering, University of Minnesota, Twin Cities, 7-130 Nils Hasselmo Hall, 312 Church St. SE, Minneapolis, MN 55455, USA; Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Natasha Santosh
- Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Department of Pediatrics, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Michelina Iacovino
- Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Department of Pediatrics, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Michael Kyba
- Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Department of Pediatrics, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Lillehei Heart Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Brenda M Ogle
- Department of Biomedical Engineering, University of Minnesota, Twin Cities, 7-130 Nils Hasselmo Hall, 312 Church St. SE, Minneapolis, MN 55455, USA; Stem Cell Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Department of Pediatrics, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Lillehei Heart Institute, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Institute for Engineering in Medicine, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA.
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7
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Voeltzel T, Fossard G, Degaud M, Geistlich K, Gadot N, Jeanpierre S, Mikaelian I, Brevet M, Anginot A, Le Bousse-Kerdilès MC, Trichet V, Lefort S, Maguer-Satta V. A minimal standardized human bone marrow microphysiological system to assess resident cell behavior during normal and pathological processes. Biomater Sci 2021; 10:485-498. [PMID: 34904143 DOI: 10.1039/d1bm01098k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bone marrow is a complex and dynamic microenvironment that provides essential cues to resident cells. We developed a standardized three-dimensional (3D) model to decipher mechanisms that control human cells during hematological and non-hematological processes. Our simple 3D-model is constituted of a biphasic calcium phosphate-based scaffold and human cell lines to ensure a high reproducibility. We obtained a minimal well-organized bone marrow-like structure in which various cell types and secreted extracellular matrix can be observed and characterized by in situ imaging or following viable cell retrieval. The complexity of the system can be increased and customized, with each cellular component being independently modulated according to the issue investigated. Introduction of pathological elements in this 3D-system accurately reproduced changes observed in patient bone marrow. Hence, we have developed a handy and flexible standardized microphysiological system that mimics human bone marrow, allowing histological analysis and functional assays on collected cells.
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Affiliation(s)
- Thibault Voeltzel
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France.,CNRS GDR 3697 MicroNiT, Tours, France.
| | - Gaëlle Fossard
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France.,Hospices Civils de Lyon, Hematology Department, Centre Hospitalier Lyon Sud, F-69495 Pierre Bénite, France
| | - Michaël Degaud
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France.,Hospices Civils de Lyon, Hematology Department, Centre Hospitalier Lyon Sud, F-69495 Pierre Bénite, France
| | - Kevin Geistlich
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France.,Centre Léon Bérard, Lyon, France
| | - Nicolas Gadot
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Research Pathology Platform, Department of Translational Research and Innovation, Centre Léon Bérard, Lyon, France
| | - Sandrine Jeanpierre
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France.,Centre Léon Bérard, Lyon, France
| | - Ivan Mikaelian
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France
| | - Marie Brevet
- Pathology Department, Hospices Civils de Lyon, Bron F-69500, France
| | - Adrienne Anginot
- UMR1197, Université Paris-Saclay, 94800 Villejuif, France.,CNRS GDR 3697 MicroNiT, Tours, France.
| | | | - Valérie Trichet
- INSERM, UMR 1238, PHYOS, Faculty of Medicine, University of Nantes, Nantes, France.,CNRS GDR 3697 MicroNiT, Tours, France.
| | - Sylvain Lefort
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France.,CNRS GDR 3697 MicroNiT, Tours, France.
| | - Véronique Maguer-Satta
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France.,Université de Lyon, 69000, Lyon, France.,Department of Cancer Initiation and Tumor cell Identity and Lyon, France.,CNRS GDR 3697 MicroNiT, Tours, France. .,Centre Léon Bérard, Lyon, France
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8
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Smith LA, Hidalgo Aguilar A, Owens DDG, Quelch RH, Knight E, Przyborski SA. Using Advanced Cell Culture Techniques to Differentiate Pluripotent Stem Cells and Recreate Tissue Structures Representative of Teratoma Xenografts. Front Cell Dev Biol 2021; 9:667246. [PMID: 34026759 PMCID: PMC8134696 DOI: 10.3389/fcell.2021.667246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 04/12/2021] [Indexed: 11/24/2022] Open
Abstract
Various methods are currently used to investigate human tissue differentiation, including human embryo culture and studies utilising pluripotent stem cells (PSCs) such as in vitro embryoid body formation and in vivo teratoma assays. Each method has its own distinct advantages, yet many are limited due to being unable to achieve the complexity and maturity of tissue structures observed in the developed human. The teratoma xenograft assay allows maturation of more complex tissue derivatives, but this method has ethical issues surrounding animal usage and significant protocol variation. In this study, we have combined three-dimensional (3D) in vitro cell technologies including the common technique of embryoid body (EB) formation with a novel porous scaffold membrane, in order to prolong cell viability and extend the differentiation of PSC derived EBs. This approach enables the formation of more complex morphologically identifiable 3D tissue structures representative of all three primary germ layers. Preliminary in vitro work with the human embryonal carcinoma line TERA2.SP12 demonstrated improved EB viability and enhanced tissue structure formation, comparable to teratocarcinoma xenografts derived in vivo from the same cell line. This is thought to be due to reduced diffusion distances as the shape of the spherical EB transforms and flattens, allowing for improved nutritional/oxygen support to the developing structures over extended periods. Further work with EBs derived from murine embryonic stem cells demonstrated that the formation of a wide range of complex, recognisable tissue structures could be achieved within 2–3 weeks of culture. Rudimentary tissue structures from all three germ layers were present, including epidermal, cartilage and epithelial tissues, again, strongly resembling tissue structure of teratoma xenografts of the same cell line. Proof of concept work with EBs derived from the human embryonic stem cell line H9 also showed the ability to form complex tissue structures within this system. This novel yet simple model offers a controllable, reproducible method to achieve complex tissue formation in vitro. It has the potential to be used to study human developmental processes, as well as offering an animal free alternative method to the teratoma assay to assess the developmental potential of novel stem cell lines.
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Affiliation(s)
- L A Smith
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - A Hidalgo Aguilar
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - D D G Owens
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - R H Quelch
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - E Knight
- Department of Biosciences, Durham University, Durham, United Kingdom
| | - S A Przyborski
- Department of Biosciences, Durham University, Durham, United Kingdom.,Reprocell Europe, NETPark, Sedgefield, United Kingdom
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9
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Wright A, Arthaud-Day ML, Weiss ML. Therapeutic Use of Mesenchymal Stromal Cells: The Need for Inclusive Characterization Guidelines to Accommodate All Tissue Sources and Species. Front Cell Dev Biol 2021; 9:632717. [PMID: 33665190 PMCID: PMC7921162 DOI: 10.3389/fcell.2021.632717] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/07/2021] [Indexed: 12/12/2022] Open
Abstract
Following their discovery over 50 years ago, mesenchymal stromal cells (MSCs) have become one of the most studied cellular therapeutic products by both academia and industry due to their regenerative potential and immunomodulatory properties. The promise of MSCs as a therapeutic modality has been demonstrated by preclinical data yet has not translated to consistent, successful clinical trial results in humans. Despite the disparities across the field, MSC shareholders are unified under one common goal-to use MSCs as a therapeutic modality to improve the quality of life for those suffering from a malady in which the standard of care is suboptimal or no longer effective. Currently, there is no Food and Drug Administration (FDA)-approved MSC therapy on the market in the United States although several MSC products have been granted regulatory approval in other countries. In this review, we intend to identify hurdles that are impeding therapeutic progress and discuss strategies that may aid in accomplishing this universal goal of widespread therapeutic use.
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Affiliation(s)
- Adrienne Wright
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, United States
| | - Marne L Arthaud-Day
- Department of Management, Kansas State University, Manhattan, KS, United States
| | - Mark L Weiss
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, United States.,Midwest Institute of Comparative Stem Cell Biotechnology, Kansas State University, Manhattan, KS, United States
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10
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Chen YH, Grigelioniene G, Newton PT, Gullander J, Elfving M, Hammarsjö A, Batkovskyte D, Alsaif HS, Kurdi WIY, Abdulwahab F, Shanmugasundaram V, Devey L, Bacrot S, Brodszki J, Huber C, Hamel B, Gisselsson D, Papadogiannakis N, Jedrycha K, Gürtl-Lackner B, Chagin AS, Nishimura G, Aschenbrenner D, Alkuraya FS, Laurence A, Cormier-Daire V, Uhlig HH. Absence of GP130 cytokine receptor signaling causes extended Stüve-Wiedemann syndrome. J Exp Med 2020; 217:133568. [PMID: 31914175 PMCID: PMC7062520 DOI: 10.1084/jem.20191306] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/07/2019] [Accepted: 11/14/2019] [Indexed: 01/25/2023] Open
Abstract
The gene IL6ST encodes GP130, the common signal transducer of the IL-6 cytokine family consisting of 10 cytokines. Previous studies have identified cytokine-selective IL6ST defects that preserve LIF signaling. We describe three unrelated families with at least five affected individuals who presented with lethal Stüve-Wiedemann–like syndrome characterized by skeletal dysplasia and neonatal lung dysfunction with additional features such as congenital thrombocytopenia, eczematoid dermatitis, renal abnormalities, and defective acute-phase response. We identified essential loss-of-function variants in IL6ST (a homozygous nonsense variant and a homozygous intronic splice variant with exon skipping). Functional tests showed absent cellular responses to GP130-dependent cytokines including IL-6, IL-11, IL-27, oncostatin M (OSM), and leukemia inhibitory factor (LIF). Genetic reconstitution of GP130 by lentiviral transduction in patient-derived cells reversed the signaling defect. This study identifies a new genetic syndrome caused by the complete lack of signaling of a whole family of GP130-dependent cytokines in humans and highlights the importance of the LIF signaling pathway in pre- and perinatal development.
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Affiliation(s)
- Yin-Huai Chen
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK
| | - Giedre Grigelioniene
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Phillip T Newton
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Jacob Gullander
- University and Regional Laboratories Department of Clinical Genetics, Lund, Sweden
| | - Maria Elfving
- Department of Clinical Sciences, Pediatrics, Skåne University Hospital Lund, Lund University, Lund, Sweden
| | - Anna Hammarsjö
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Dominyka Batkovskyte
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Hessa S Alsaif
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Wesam I Y Kurdi
- Obstetrics and Gynecology Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Firdous Abdulwahab
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | | | | | - Séverine Bacrot
- Department of Clinical Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris cité, Institut Imagine, Hôpital Necker Enfants Malades, Paris, France
| | - Jana Brodszki
- Department of Obstetrics and Gynecology, Skåne University Hospital, Lund University, Lund, Sweden
| | - Celine Huber
- Department of Clinical Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris cité, Institut Imagine, Hôpital Necker Enfants Malades, Paris, France
| | - Ben Hamel
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, Netherlands
| | - David Gisselsson
- Division of Clinical Genetics, Department of Laboratory Medicine, Lund University, Sweden
| | - Nikos Papadogiannakis
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Huddinge, Sweden
| | - Katarina Jedrycha
- Department of Clinical Sciences, Pediatrics, Skåne University Hospital Lund, Lund University, Lund, Sweden
| | - Barbara Gürtl-Lackner
- Division of Clinical Genetics, Department of Laboratory Medicine, Lund University, Sweden
| | - Andrei S Chagin
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Institute for Regenerative Medicine, Sechenov University, Moscow, Russian Federation
| | - Gen Nishimura
- Center for Intractable Diseases, Saitama University Hospital, Saitama, Japan
| | | | - Fowzan S Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.,Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Arian Laurence
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK
| | - Valérie Cormier-Daire
- Department of Clinical Genetics, INSERM UMR 1163, Université Paris Descartes-Sorbonne Paris cité, Institut Imagine, Hôpital Necker Enfants Malades, Paris, France
| | - Holm H Uhlig
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK.,Department of Paediatrics, University of Oxford, Oxford, UK.,Oxford National Institute for Health Research Biomedical Research Centre, Oxford, UK
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11
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Chikhirzhina E, Starkova T, Beljajev A, Polyanichko A, Tomilin A. Functional Diversity of Non-Histone Chromosomal Protein HmgB1. Int J Mol Sci 2020; 21:E7948. [PMID: 33114717 PMCID: PMC7662367 DOI: 10.3390/ijms21217948] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 12/27/2022] Open
Abstract
The functioning of DNA in the cell nucleus is ensured by a multitude of proteins, whose interactions with DNA as well as with other proteins lead to the formation of a complicated, organized, and quite dynamic system known as chromatin. This review is devoted to the description of properties and structure of the progenitors of the most abundant non-histone protein of the HMGB family-the HmgB1 protein. The proteins of the HMGB family are also known as "architectural factors" of chromatin, which play an important role in gene expression, transcription, DNA replication, and repair. However, as soon as HmgB1 goes outside the nucleus, it acquires completely different functions, post-translational modifications, and change of its redox state. Despite a lot of evidence of the functional activity of HmgB1, there are still many issues to be solved related to the mechanisms of the influence of HmgB1 on the development and treatment of different diseases-from oncological and cardiovascular diseases to pathologies during pregnancy and childbirth. Here, we describe molecular structure of the HmgB1 protein and discuss general mechanisms of its interactions with other proteins and DNA in cell.
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Affiliation(s)
| | | | | | - Alexander Polyanichko
- Laboratory of Molecular Biology of Stem Cells, Institute of Cytology of the Russian Academy of Sciences, 194064 St. Petersburg, Tikhoretsky Av. 4, Russia; (T.S.); (A.B.); (A.T.)
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12
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Theerakittayakorn K, Thi Nguyen H, Musika J, Kunkanjanawan H, Imsoonthornruksa S, Somredngan S, Ketudat-Cairns M, Parnpai R. Differentiation Induction of Human Stem Cells for Corneal Epithelial Regeneration. Int J Mol Sci 2020; 21:E7834. [PMID: 33105778 PMCID: PMC7660084 DOI: 10.3390/ijms21217834] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 12/13/2022] Open
Abstract
Deficiency of corneal epithelium causes vision impairment or blindness in severe cases. Transplantation of corneal epithelial cells is an effective treatment but the availability of the tissue source for those cells is inadequate. Stem cells can be induced to differentiate to corneal epithelial cells and used in the treatment. Multipotent stem cells (mesenchymal stem cells) and pluripotent stem cells (embryonic stem cells and induced pluripotent stem cells) are promising cells to address the problem. Various protocols have been developed to induce differentiation of the stem cells into corneal epithelial cells. The feasibility and efficacy of both human stem cells and animal stem cells have been investigated for corneal epithelium regeneration. However, some physiological aspects of animal stem cells are different from those of human stem cells, the protocols suited for animal stem cells might not be suitable for human stem cells. Therefore, in this review, only the investigations of corneal epithelial differentiation of human stem cells are taken into account. The available protocols for inducing the differentiation of human stem cells into corneal epithelial cells are gathered and compared. Also, the pathways involving in the differentiation are provided to elucidate the relevant mechanisms.
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Affiliation(s)
- Kasem Theerakittayakorn
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (K.T.); (H.T.N.); (J.M.); (S.I.); (S.S.); (M.K.-C.)
| | - Hong Thi Nguyen
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (K.T.); (H.T.N.); (J.M.); (S.I.); (S.S.); (M.K.-C.)
| | - Jidapa Musika
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (K.T.); (H.T.N.); (J.M.); (S.I.); (S.S.); (M.K.-C.)
| | - Hataiwan Kunkanjanawan
- Medeze Research and Development Co., Ltd. 28/9 Moo 8, Phutthamonthon Sai 4 Rd., Krathum Lom, Sam Phran, Nakhon Pathom 73220, Thailand;
| | - Sumeth Imsoonthornruksa
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (K.T.); (H.T.N.); (J.M.); (S.I.); (S.S.); (M.K.-C.)
| | - Sirilak Somredngan
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (K.T.); (H.T.N.); (J.M.); (S.I.); (S.S.); (M.K.-C.)
| | - Mariena Ketudat-Cairns
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (K.T.); (H.T.N.); (J.M.); (S.I.); (S.S.); (M.K.-C.)
| | - Rangsun Parnpai
- Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (K.T.); (H.T.N.); (J.M.); (S.I.); (S.S.); (M.K.-C.)
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13
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Abstract
Chromatin immunoprecipitation (ChIP) followed by next-generation sequencing is a powerful technique that characterizes the genome-wide DNA-binding profile of a protein of interest. The general ChIP-seq workflow has been applied widely to many sample types and target proteins, but sample-specific optimization of various steps is necessary to achieve high-quality data. This protocol is specifically optimized for cultured human embryonic stem cells (hESCs), including steps to check sample quality and non-specific enrichment of “hyper-ChIPable” regions prior to sequencing. For complete details on the use and execution of this protocol, please refer to Gunne-Braden et al. (2020). ChIP-seq is used to characterize genome-wide DNA-binding profile for a protein of interest Conventional ChIP protocols produce poor or highly variable results in hESC cultures ChIP can be optimized for hESC cultures to ensure high-quality sequencing data Optimized ChIP includes improved chromatin fragmentation and sample quality checkpoints
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14
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Selective Induction of Human Autonomic Neurons Enables Precise Control of Cardiomyocyte Beating. Sci Rep 2020; 10:9464. [PMID: 32528170 PMCID: PMC7289887 DOI: 10.1038/s41598-020-66303-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/19/2020] [Indexed: 12/11/2022] Open
Abstract
The autonomic nervous system (ANS) regulates tissue homeostasis and remodelling through antagonistic effects of noradrenergic sympathetic and cholinergic parasympathetic signalling. Despite numerous reports on the induction of sympathetic neurons from human pluripotent stem cells (hPSCs), no induction methods have effectively derived cholinergic parasympathetic neurons from hPSCs. Considering the antagonistic effects of noradrenergic and cholinergic inputs on target organs, both sympathetic and parasympathetic neurons are expected to be induced. This study aimed to develop a stepwise chemical induction method to induce sympathetic-like and parasympathetic-like ANS neurons. Autonomic specification was achieved through restricting signals inducing sensory or enteric neurogenesis and activating bone morphogenetic protein (BMP) signals. Global mRNA expression analyses after stepwise induction, including single-cell RNA-seq analysis of induced neurons and functional assays revealed that each induced sympathetic-like or parasympathetic-like neuron acquired pharmacological and electrophysiological functional properties with distinct marker expression. Further, we identified selective induction methods using appropriate seeding cell densities and neurotrophic factor concentrations. Neurons were individually induced, facilitating the regulation of the beating rates of hiPSC-derived cardiomyocytes in an antagonistic manner. The induction methods yield specific neuron types, and their influence on various tissues can be studied by co-cultured assays.
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15
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Liver fluke granulin promotes extracellular vesicle-mediated crosstalk and cellular microenvironment conducive to cholangiocarcinoma. Neoplasia 2020; 22:203-216. [PMID: 32244128 PMCID: PMC7118280 DOI: 10.1016/j.neo.2020.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/25/2020] [Accepted: 02/29/2020] [Indexed: 12/13/2022] Open
Abstract
Crosstalk between malignant and neighboring cells contributes to tumor growth. In East Asia, infection with the liver fluke is a major risk factor for cholangiocarcinoma (CCA). The liver fluke Opisthorchis viverrini secretes a growth factor termed liver fluke granulin, a homologue of the human progranulin, which contributes significantly to biliary tract fibrosis and morbidity. Here, extracellular vesicle (EV)-mediated transfer of mRNAs from human cholangiocytes to naïve recipient cells was investigated following exposure to liver fluke granulin. To minimize the influence of endogenous progranulin, its cognate gene was inactivated using CRISPR/Cas9-based gene knock-out. Several progranulin-depleted cell lines, termed ΔhuPGRN-H69, were established. These lines exhibited >80% reductions in levels of specific transcript and progranulin, both in gene-edited cells and within EVs released by these cells. Profiles of extracellular vesicle RNAs (evRNA) from ΔhuPGRN-H69 for CCA-associated characteristics revealed a paucity of transcripts for estrogen- and Wnt-signaling pathways, peptidase inhibitors and tyrosine phosphatase related to cellular processes including oncogenic transformation. Several CCA-specific evRNAs including MAPK/AKT pathway members were induced by exposure to liver fluke granulin. By comparison, estrogen, Wnt/PI3K and TGF signaling and other CCA pathway mRNAs were upregulated in wild type H69 cells exposed to liver fluke granulin. Of these, CCA-associated evRNAs modified the CCA microenvironment in naïve cells co-cultured with EVs from ΔhuPGRN-H69 cells exposed to liver fluke granulin, and induced translation of MAPK phosphorylation related-protein in naïve recipient cells in comparison with control recipient cells. Exosome-mediated crosstalk in response to liver fluke granulin promoted a CCA-specific program through MAPK pathway which, in turn, established a CCA-conducive disposition.
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16
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Hamidi S, Nakaya Y, Nagai H, Alev C, Kasukawa T, Chhabra S, Lee R, Niwa H, Warmflash A, Shibata T, Sheng G. Mesenchymal-epithelial transition regulates initiation of pluripotency exit before gastrulation. Development 2020; 147:147/3/dev184960. [PMID: 32014865 DOI: 10.1242/dev.184960] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 12/30/2019] [Indexed: 12/22/2022]
Abstract
The pluripotent epiblast gives rise to all tissues and organs in the adult body. Its differentiation starts at gastrulation, when the epiblast generates mesoderm and endoderm germ layers through epithelial-mesenchymal transition (EMT). Although gastrulation EMT coincides with loss of epiblast pluripotency, pluripotent cells in development and in vitro can adopt either mesenchymal or epithelial morphology. The relationship between epiblast cellular morphology and its pluripotency is not well understood. Here, using chicken epiblast and mammalian pluripotency stem cell (PSC) models, we show that PSCs undergo a mesenchymal-epithelial transition (MET) prior to EMT-associated pluripotency loss. Epiblast MET and its subsequent EMT are two distinct processes. The former, a partial MET, is associated with reversible initiation of pluripotency exit, whereas the latter, a full EMT, is associated with complete and irreversible pluripotency loss. We provide evidence that integrin-mediated cell-matrix interaction is a key player in pluripotency exit regulation. We propose that epiblast partial MET is an evolutionarily conserved process among all amniotic vertebrates and that epiblast pluripotency is restricted to an intermediate cellular state residing between the fully mesenchymal and fully epithelial states.
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Affiliation(s)
- Sofiane Hamidi
- International Research Center for Medical Sciences (IRCMS), Kumamoto University, Kumamoto 860-0811, Japan
| | - Yukiko Nakaya
- Center for Biosystems Dynamics Research (BDR), RIKEN, Kobe 650-0047, Japan
| | - Hiroki Nagai
- International Research Center for Medical Sciences (IRCMS), Kumamoto University, Kumamoto 860-0811, Japan.,Center for Biosystems Dynamics Research (BDR), RIKEN, Kobe 650-0047, Japan
| | - Cantas Alev
- Center for Biosystems Dynamics Research (BDR), RIKEN, Kobe 650-0047, Japan.,Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, Kyoto 606-8507, Japan
| | - Takeya Kasukawa
- Center for Integrative Medical Sciences, RIKEN, Yokohama 230-0045, Japan
| | - Sapna Chhabra
- Systems, Synthetic and Physical Biology Graduate Program, Rice University, Houston, TX 77251, USA
| | - Ruda Lee
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, Kumamoto 860-8555, Japan
| | - Hitoshi Niwa
- Department of Pluripotent Stem Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto 860-0811, Japan
| | - Aryeh Warmflash
- Department of Biosciences and Bioengineering, Rice University, Houston, TX 77005, USA
| | - Tatsuo Shibata
- Center for Biosystems Dynamics Research (BDR), RIKEN, Kobe 650-0047, Japan
| | - Guojun Sheng
- International Research Center for Medical Sciences (IRCMS), Kumamoto University, Kumamoto 860-0811, Japan .,Center for Biosystems Dynamics Research (BDR), RIKEN, Kobe 650-0047, Japan
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17
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Abstract
Cellular reprogramming experiments from somatic cell types have demonstrated the plasticity of terminally differentiated cell states. Recent efforts in understanding the mechanisms of cellular reprogramming have begun to elucidate the differentiation trajectories along the reprogramming processes. In this review, we focus mainly on direct reprogramming strategies by transcription factors and highlight the variables that contribute to cell fate conversion outcomes. We review key studies that shed light on the cellular and molecular mechanisms by investigating differentiation trajectories and alternative cell states as well as transcription factor regulatory activities during cell fate reprogramming. Finally, we highlight a few concepts that we believe require attention, particularly when measuring the success of cell reprogramming experiments.
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Affiliation(s)
- Begüm Aydin
- Department of Biology, New York University, New York, NY 10003, USA; .,Neuroscience Institute, Department of Neuroscience and Physiology, NYU School of Medicine, New York, NY 10016, USA
| | - Esteban O Mazzoni
- Department of Biology, New York University, New York, NY 10003, USA; .,Neuroscience Institute, Department of Neuroscience and Physiology, NYU School of Medicine, New York, NY 10016, USA
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18
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Scibetta AC, Morris ER, Liebowitz AB, Gao X, Lu A, Philippon MJ, Huard J. Characterization of the chondrogenic and osteogenic potential of male and female human muscle-derived stem cells: Implication for stem cell therapy. J Orthop Res 2019; 37:1339-1349. [PMID: 30667562 DOI: 10.1002/jor.24231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 01/02/2019] [Indexed: 02/04/2023]
Abstract
People of all backgrounds are susceptible to bone and cartilage damage, and these injuries can be debilitating. Current treatments for bone and cartilage injuries are less than optimal, and we are interested in developing new approaches to treat these diseases, specifically using human muscle-derived stem cells (hMDSCs). Our lab previously demonstrated that sex differences exist between male and female murine MDSCs; thus, this paper sought to investigate whether sex differences also exist in hMDSCs. In the present study, we characterized the chondrogenic and osteogenic sex differences of hMDSCs in vitro and in vivo. We performed in vitro osteogenic and chondrogenic differentiation using hMDSC pellet cultures. As demonstrated by microCT, histology, and immunohistochemistry, male hMDSCs were more chondrogenic and osteogenic than their female counterparts in vitro. No differences were observed based on the sex of hMDSCs in osteogenic and chondrogenic gene expression and cell surface markers. For our in vivo study, we transduced hMDSCs with lenti-BMP2/GFP and transplanted these cells into critical-sized calvarial defects in mice. MicroCT results revealed that male hMDSCs regenerated more bone at 2 weeks and demonstrated higher bone density at 4 and 6 weeks than female hMDSCs. Histology demonstrated that both male and female hMDSCs regenerated functional bone. Clinical relevance: These studies reinforce that stem cells isolated from male and female patients differ in function, and we should disclose the sex of cells used in future studies. Considering sex differences of hMDSCs may help to improve cell-based therapies for autologous cell treatment of bone and cartilage damage. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1339-1349, 2019.
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Affiliation(s)
| | | | | | - Xueqin Gao
- Steadman Philippon Research Institute, Vail, Colorado.,Department of Orthopaedic Surgery, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | - Aiping Lu
- Steadman Philippon Research Institute, Vail, Colorado.,Department of Orthopaedic Surgery, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
| | | | - Johnny Huard
- Steadman Philippon Research Institute, Vail, Colorado.,Department of Orthopaedic Surgery, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas
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19
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Ermakov A, Daks A, Fedorova O, Shuvalov O, Barlev NA. Ca 2+ -depended signaling pathways regulate self-renewal and pluripotency of stem cells. Cell Biol Int 2018; 42:1086-1096. [PMID: 29851182 DOI: 10.1002/cbin.10998] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 05/25/2018] [Indexed: 12/15/2022]
Abstract
Ca2+ -mediated signaling is widely spread in nature and plays critical role in the individual development of various organisms ranging from microorganisms to mammals. In vertebrates, Ca2+ is involved in important developmental events: fertilization, body plan establishment, and organogenesis. The two later events are defined by embryonic stem cells (ESCs). ESCs are capable of self-renewal and are pluripotent by nature, that is, can give rise to all types of cells that make up the body. Given the paramount importance of Ca2+ signalization in the development, it is therefore not surprising this process also plays role in the biology of stem cells. In this review, we scrutinize the published experimental data on the role of Ca2+ ions in embryonic stem cells self-renewal and pluripotency. In line with this, we also discuss possible mechanisms of p53 inhibition as a major hindrance to self-renewal of ESCs. Finally, we argue about the role of G-protein-coupled receptors (GPCRs), the largest family of heteromeric transmembrane receptors, and GPCR-mediated signalization in stem cells, and propose the role for the GPCR-G-protein-PLC-Ca2+ -downstream signaling pathway in the regulation of pluripotency of both mouse and human ESCs.
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Affiliation(s)
| | - Alexandra Daks
- Institute of Cytology RAS, Saint-Petersburg 194064, Russia
| | - Olga Fedorova
- Institute of Cytology RAS, Saint-Petersburg 194064, Russia
| | - Oleg Shuvalov
- Institute of Cytology RAS, Saint-Petersburg 194064, Russia
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20
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Ali Z, Chandrasekera PC, Pippin JJ. Animal research for type 2 diabetes mellitus, its limited translation for clinical benefit, and the way forward. Altern Lab Anim 2018; 46:13-22. [PMID: 29553794 DOI: 10.1177/026119291804600101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Obesity and type 2 diabetes mellitus (T2DM) have reached pandemic proportions worldwide, and considerable research efforts have been dedicated to investigating disease pathology and therapeutic options. The two hallmark features of T2DM, insulin resistance and pancreatic dysfunction, have been studied extensively by using various animal models. Despite the knowledge acquired from such models, particularly mechanistic discoveries that sometimes mimic human T2DM mechanisms or pathways, many details of human T2DM pathogenesis remain unknown, therapeutic options remain limited, and a cure has eluded research. Emerging human data have raised concern regarding inter-species differences at many levels (e.g. in gene regulation, pancreatic cytoarchitecture, glucose transport, and insulin secretion regulation), and the subsequent impact of these differences on the clinical translation of animal research findings. Therefore, it is important to recognise and address the translational gap between basic animal-based research and the clinical advances needed to prevent and treat T2DM. The purpose of this report is to identify some limitations of T2DM animal research, and to propose how greater human relevance and applicability of hypothesis-driven basic T2DM research could be achieved through the use of human-based data acquisition at various biological levels. This report addresses how in vitro, in vivo and in silico technologies could be used to investigate particular aspects of human glucose regulation. We do not propose that T2DM animal research has been without value in the identification of mechanisms, pathways, or potential targets for therapies, nor do we claim that human-based methods can provide all the answers. We recognise that the ultimate goal of T2DM animal research is to identify ways to advance the prevention, recognition and treatment of T2DM in humans, but postulate that this is where the use of animal models falls short, despite decades of effort. The best way to achieve this goal is by prioritising human-centred research.
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Affiliation(s)
- Zeeshan Ali
- Physicians Committee for Responsible Medicine, Washington, DC, USA
| | | | - John J Pippin
- Physicians Committee for Responsible Medicine, Washington, DC, USA
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21
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Constable S, Lim JM, Vaidyanathan K, Wells L. O-GlcNAc transferase regulates transcriptional activity of human Oct4. Glycobiology 2018; 27:927-937. [PMID: 28922739 DOI: 10.1093/glycob/cwx055] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 06/10/2017] [Indexed: 01/06/2023] Open
Abstract
O-linked β-N-acetylglucosamine (O-GlcNAc) is a single sugar modification found on many different classes of nuclear and cytoplasmic proteins. Addition of this modification, by the enzyme O-linked N-acetylglucosamine transferase (OGT), is dynamic and inducible. One major class of proteins modified by O-GlcNAc is transcription factors. O-GlcNAc regulates transcription factor properties through a variety of different mechanisms including localization, stability and transcriptional activation. Maintenance of embryonic stem (ES) cell pluripotency requires tight regulation of several key transcription factors, many of which are modified by O-GlcNAc. Octamer-binding protein 4 (Oct4) is one of the key transcription factors required for pluripotency of ES cells and more recently, the generation of induced pluripotent stem (iPS) cells. The action of Oct4 is modulated by the addition of several post-translational modifications, including O-GlcNAc. Previous studies in mice found a single site of O-GlcNAc addition responsible for transcriptional regulation. This study was designed to determine if this mechanism is conserved in humans. We mapped 10 novel sites of O-GlcNAc attachment on human Oct4, and confirmed a role for OGT in transcriptional activation of Oct4 at a site distinct from that found in mouse that allows distinction between different Oct4 target promoters. Additionally, we uncovered a potential new role for OGT that does not include its catalytic function. These results confirm that human Oct4 activity is being regulated by OGT by a mechanism that is distinct from mouse Oct4.
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Affiliation(s)
- Sandii Constable
- Complex Carbohydrate Research Center and Department of Biochemistry and Molecular Biology, The University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Jae-Min Lim
- Complex Carbohydrate Research Center and Department of Biochemistry and Molecular Biology, The University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA.,Department of Chemistry, Changwon National University, Changwon, Gyeongnam 641-773, South Korea
| | - Krithika Vaidyanathan
- Complex Carbohydrate Research Center and Department of Biochemistry and Molecular Biology, The University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Lance Wells
- Complex Carbohydrate Research Center and Department of Biochemistry and Molecular Biology, The University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
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22
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Huang ML, Michalak AL, Fisher CJ, Christy M, Smith RAA, Godula K. Small Molecule Antagonist of Cell Surface Glycosaminoglycans Restricts Mouse Embryonic Stem Cells in a Pluripotent State. Stem Cells 2017; 36:45-54. [PMID: 28984039 DOI: 10.1002/stem.2714] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 09/06/2017] [Accepted: 09/14/2017] [Indexed: 11/06/2022]
Abstract
Recently, the field of stem cell-based regeneration has turned its attention toward chemical approaches for controlling the pluripotency and differentiation of embryonic stem cells (ESCs) using drug-like small molecule modulators. Growth factor receptors or their associated downstream kinases that regulate intracellular signaling pathways during differentiation are typically the targets for these molecules. The glycocalyx, which plays an essential role in actuating responses to growth factors at the cellular boundary, offers an underexplored opportunity for intervention using small molecules to influence differentiation. Here, we show that surfen, an antagonist of cell-surface glycosaminoglycans required for growth factor association with cognate receptors, acts as a potent and general inhibitor of differentiation and promoter of pluripotency in mouse ESCs. This finding shows that drugging the stem cell Glycome with small molecules to silence differentiation cues can provide a powerful new alternative to existing techniques for controlling stem cell fate. Stem Cells 2018;36:45-54.
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Affiliation(s)
- Mia L Huang
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - Austen L Michalak
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - Christopher J Fisher
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - Mitchell Christy
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - Raymond A A Smith
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
| | - Kamil Godula
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA
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23
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Chhabra A. Inherent Immunogenicity or Lack Thereof of Pluripotent Stem Cells: Implications for Cell Replacement Therapy. Front Immunol 2017; 8:993. [PMID: 28868053 PMCID: PMC5563324 DOI: 10.3389/fimmu.2017.00993] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/03/2017] [Indexed: 01/07/2023] Open
Abstract
Donor-specific induced pluripotent stem cells (iPSCs) offer opportunities for personalized cell replacement therapeutic approaches due to their unlimited self-renewal potential and ability to differentiate into different somatic cells. A significant progress has been made toward generating iPSC lines that are free of integrating viral vectors, development of xeno-free culture conditions, and differentiation of pluripotent stem cells (PSCs) into functional somatic cell lineages. Since donor-specific iPSC lines are genetically identical to the individual, they are expected to be immunologically matched and these iPSC lines and their cellular derivatives are not expected to be immunologically rejected. However, studies in mouse models, utilizing rejection of teratomas as a model, have claimed that syngenic iPSC lines, especially the iPSC lines derived with integrating viral vectors, could be inherently immunogenic. This manuscript reviews current understanding of inherent immunogenicity of PSC lines, especially that of the human iPSC lines and their cellular derivatives, and strategies to overcome it.
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Affiliation(s)
- Arvind Chhabra
- Department of Medicine, University of Connecticut Health Center (UCONN Health), Farmington, CT, United States
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24
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Zimmerlin L, Park TS, Zambidis ET. Capturing Human Naïve Pluripotency in the Embryo and in the Dish. Stem Cells Dev 2017; 26:1141-1161. [PMID: 28537488 DOI: 10.1089/scd.2017.0055] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Although human embryonic stem cells (hESCs) were first derived almost 20 years ago, it was only recently acknowledged that they share closer molecular and functional identity to postimplantation lineage-primed murine epiblast stem cells than to naïve preimplantation inner cell mass-derived mouse ESCs (mESCs). A myriad of transcriptional, epigenetic, biochemical, and metabolic attributes have now been described that distinguish naïve and primed pluripotent states in both rodents and humans. Conventional hESCs and human induced pluripotent stem cells (hiPSCs) appear to lack many of the defining hallmarks of naïve mESCs. These include important features of the naïve ground state murine epiblast, such as an open epigenetic architecture, reduced lineage-primed gene expression, and chimera and germline competence following injection into a recipient blastocyst-stage embryo. Several transgenic and chemical methods were recently reported that appear to revert conventional human PSCs to mESC-like ground states. However, it remains unclear if subtle deviations in global transcription, cell signaling dependencies, and extent of epigenetic/metabolic shifts in these various human naïve-reverted pluripotent states represent true functional differences or alternatively the existence of distinct human pluripotent states along a spectrum. In this study, we review the current understanding and developmental features of various human pluripotency-associated phenotypes and discuss potential biological mechanisms that may support stable maintenance of an authentic epiblast-like ground state of human pluripotency.
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Affiliation(s)
- Ludovic Zimmerlin
- 1 Institute for Cell Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Division of Pediatric Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins , Baltimore, Maryland
| | - Tea Soon Park
- 1 Institute for Cell Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Division of Pediatric Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins , Baltimore, Maryland
| | - Elias T Zambidis
- 1 Institute for Cell Engineering, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Division of Pediatric Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins , Baltimore, Maryland
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25
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Sundaram V, Choudhary MNK, Pehrsson E, Xing X, Fiore C, Pandey M, Maricque B, Udawatta M, Ngo D, Chen Y, Paguntalan A, Ray T, Hughes A, Cohen BA, Wang T. Functional cis-regulatory modules encoded by mouse-specific endogenous retrovirus. Nat Commun 2017; 8:14550. [PMID: 28348391 PMCID: PMC5379053 DOI: 10.1038/ncomms14550] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 01/11/2017] [Indexed: 01/30/2023] Open
Abstract
Cis-regulatory modules contain multiple transcription factor (TF)-binding sites and integrate the effects of each TF to control gene expression in specific cellular contexts. Transposable elements (TEs) are uniquely equipped to deposit their regulatory sequences across a genome, which could also contain cis-regulatory modules that coordinate the control of multiple genes with the same regulatory logic. We provide the first evidence of mouse-specific TEs that encode a module of TF-binding sites in mouse embryonic stem cells (ESCs). The majority (77%) of the individual TEs tested exhibited enhancer activity in mouse ESCs. By mutating individual TF-binding sites within the TE, we identified a module of TF-binding motifs that cooperatively enhanced gene expression. Interestingly, we also observed the same motif module in the in silico constructed ancestral TE that also acted cooperatively to enhance gene expression. Our results suggest that ancestral TE insertions might have brought in cis-regulatory modules into the mouse genome.
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Affiliation(s)
- Vasavi Sundaram
- Division of Biological and Biomedical Sciences, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, Missouri 63110, USA
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Mayank N. K. Choudhary
- Division of Biological and Biomedical Sciences, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, Missouri 63110, USA
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Erica Pehrsson
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Xiaoyun Xing
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Christopher Fiore
- Division of Biological and Biomedical Sciences, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, Missouri 63110, USA
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Manishi Pandey
- Division of Biological and Biomedical Sciences, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, Missouri 63110, USA
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Brett Maricque
- Division of Biological and Biomedical Sciences, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, Missouri 63110, USA
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Methma Udawatta
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Duc Ngo
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Yujie Chen
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Asia Paguntalan
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Tammy Ray
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Ava Hughes
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Barak A. Cohen
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
| | - Ting Wang
- Department of Genetics, Center for Genome Sciences and Systems Biology, Washington University School of Medicine, 4515 McKinley Avenue, St. Louis, Missouri 63110, USA
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26
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Augustin I, Dewi DL, Hundshammer J, Erdmann G, Kerr G, Boutros M. Autocrine Wnt regulates the survival and genomic stability of embryonic stem cells. Sci Signal 2017; 10:10/461/eaah6829. [PMID: 28074006 DOI: 10.1126/scisignal.aah6829] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Wnt signaling plays an important role in the self-renewal and differentiation of stem cells. The secretion of Wnt ligands requires Evi (also known as Wls). Genetically ablating Evi provides an experimental approach to studying the consequence of depleting all redundant Wnt proteins, and overexpressing Evi enables a nonspecific means of increasing Wnt signaling. We generated Evi-deficient and Evi-overexpressing mouse embryonic stem cells (ESCs) to analyze the role of autocrine Wnt production in self-renewal and differentiation. Self-renewal was reduced in Evi-deficient ESCs and increased in Evi-overexpressing ESCs in the absence of leukemia inhibitory factor, which supports the self-renewal of ESCs. The differentiation of ESCs into cardiomyocytes was enhanced when Evi was overexpressed and teratoma formation and growth of Evi-deficient ESCs in vivo were impaired, indicating that autocrine Wnt ligands were necessary for ESC differentiation and survival. ESCs lacking autocrine Wnt signaling had mitotic defects and showed genomic instability. Together, our study demonstrates that autocrine Wnt secretion is important for the survival, chromosomal stability, differentiation, and tumorigenic potential of ESCs.
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Affiliation(s)
- Iris Augustin
- German Cancer Research Center (DKFZ), Division of Signaling and Functional Genomics, and Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Heidelberg 69120, Germany.
| | - Dyah L Dewi
- German Cancer Research Center (DKFZ), Division of Signaling and Functional Genomics, and Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Heidelberg 69120, Germany
| | - Jennifer Hundshammer
- German Cancer Research Center (DKFZ), Division of Signaling and Functional Genomics, and Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Heidelberg 69120, Germany
| | - Gerrit Erdmann
- NMI TT Naturwissenschaftliches und Medizinisches Institut Technologie Transfer GmbH Pharmaservices, Berlin 13353, Germany
| | - Grainne Kerr
- German Cancer Research Center (DKFZ), Division of Signaling and Functional Genomics, and Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Heidelberg 69120, Germany
| | - Michael Boutros
- German Cancer Research Center (DKFZ), Division of Signaling and Functional Genomics, and Department of Cell and Molecular Biology, Medical Faculty Mannheim, Heidelberg University, Heidelberg 69120, Germany.
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27
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Perra A, Plateroti M, Columbano A. T3/TRs axis in hepatocellular carcinoma: new concepts for an old pair. Endocr Relat Cancer 2016; 23:R353-69. [PMID: 27353037 DOI: 10.1530/erc-16-0152] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 02/06/2023]
Abstract
Hepatocellular carcinoma (HCC) is a leading cause of cancer-related death worldwide, and its burden is expected to further increase in the next years. Chronic inflammation, induced by multiple viruses or metabolic alterations, and epigenetic and genetic modifications, cooperate in cancer development via a combination of common and distinct aetiology-specific pathways. In spite of the advances of classical therapies, the prognosis of this neoplasm has not considerably improved over the past few years. The advent of targeted therapies and the approval of the systemic treatment of advanced HCC with the kinase inhibitor sorafenib have provided some hope for the future. However, the benefits obtained from this treatment are still disappointing, as it extends the median life expectancy of patients by only few months. It is thus mandatory to find alternative effective treatments. Although the role played by thyroid hormones (THs) and their nuclear receptors (TRs) in human cancer is still unclear, mounting evidence indicates that they behave as oncosuppressors in HCC. However, the molecular mechanisms by which they exert this effect and the consequence of their activation following ligand binding on HCC progression remain elusive. In this review, we re-evaluate the existing evidence of the role of TH/TRs in HCC development; we will also discuss how TR alterations could affect fundamental biological processes, such as hepatocyte proliferation and differentiation, and consequently HCC progression. Finally, we will discuss if and how TRs can be foreseen as therapeutic targets in HCC and whether selective TR modulation by TH analogues may hold promise for HCC treatment.
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Affiliation(s)
- Andrea Perra
- Department of Biomedical SciencesUniversity of Cagliari, Cagliari, Italy
| | - Michelina Plateroti
- Cancer Research Center of Lyon INSERM U1052CNRS UMR5286, Université de Lyon, Université Lyon 1, Centre Léon Bérard, Département de la Recherche, Lyon, France
| | - Amedeo Columbano
- Department of Biomedical SciencesUniversity of Cagliari, Cagliari, Italy
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28
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van den Hurk M, Kenis G, Bardy C, van den Hove DL, Gage FH, Steinbusch HW, Rutten BP. Transcriptional and epigenetic mechanisms of cellular reprogramming to induced pluripotency. Epigenomics 2016; 8:1131-49. [PMID: 27419933 DOI: 10.2217/epi-2016-0032] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Enforced ectopic expression of a cocktail of pluripotency-associated genes such as Oct4, Sox2, Klf4 and c-Myc can reprogram somatic cells into induced pluripotent stem cells (iPSCs). The remarkable proliferation ability of iPSCs and their aptitude to redifferentiate into any cell lineage makes these cells a promising tool for generating a variety of human tissue in vitro. Yet, pluripotency induction is an inefficient process, as cells undergoing reprogramming need to overcome developmentally imposed epigenetic barriers. Recent work has shed new light on the molecular mechanisms that drive the reprogramming of somatic cells to iPSCs. Here, we present current knowledge on the transcriptional and epigenetic regulation of pluripotency induction and discuss how variability in epigenetic states impacts iPSCs' inherent biological properties.
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Affiliation(s)
- Mark van den Hurk
- Department of Psychiatry & Neuropsychology, Division of Translational Neuroscience, Maastricht University, Maastricht, 6200 MD, The Netherlands.,European Graduate School of Neuroscience (EURON), Maastricht University, Maastricht, 6200 MD, The Netherlands.,Laboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Gunter Kenis
- Department of Psychiatry & Neuropsychology, Division of Translational Neuroscience, Maastricht University, Maastricht, 6200 MD, The Netherlands.,European Graduate School of Neuroscience (EURON), Maastricht University, Maastricht, 6200 MD, The Netherlands
| | - Cedric Bardy
- Laboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Daniel L van den Hove
- Department of Psychiatry & Neuropsychology, Division of Translational Neuroscience, Maastricht University, Maastricht, 6200 MD, The Netherlands.,European Graduate School of Neuroscience (EURON), Maastricht University, Maastricht, 6200 MD, The Netherlands.,Laboratory of Translational Neuroscience, Department of Psychiatry, Psychosomatics & Psychotherapy, University of Wuerzburg, 97080 Wuerzburg, Germany
| | - Fred H Gage
- Laboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Harry W Steinbusch
- Department of Psychiatry & Neuropsychology, Division of Translational Neuroscience, Maastricht University, Maastricht, 6200 MD, The Netherlands.,European Graduate School of Neuroscience (EURON), Maastricht University, Maastricht, 6200 MD, The Netherlands
| | - Bart P Rutten
- Department of Psychiatry & Neuropsychology, Division of Translational Neuroscience, Maastricht University, Maastricht, 6200 MD, The Netherlands.,European Graduate School of Neuroscience (EURON), Maastricht University, Maastricht, 6200 MD, The Netherlands
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29
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Marx U, Andersson TB, Bahinski A, Beilmann M, Beken S, Cassee FR, Cirit M, Daneshian M, Fitzpatrick S, Frey O, Gaertner C, Giese C, Griffith L, Hartung T, Heringa MB, Hoeng J, de Jong WH, Kojima H, Kuehnl J, Luch A, Maschmeyer I, Sakharov D, Sips AJAM, Steger-Hartmann T, Tagle DA, Tonevitsky A, Tralau T, Tsyb S, van de Stolpe A, Vandebriel R, Vulto P, Wang J, Wiest J, Rodenburg M, Roth A. Biology-inspired microphysiological system approaches to solve the prediction dilemma of substance testing. ALTEX 2016; 33:272-321. [PMID: 27180100 PMCID: PMC5396467 DOI: 10.14573/altex.1603161] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/11/2016] [Indexed: 01/09/2023]
Abstract
The recent advent of microphysiological systems - microfluidic biomimetic devices that aspire to emulate the biology of human tissues, organs and circulation in vitro - is envisaged to enable a global paradigm shift in drug development. An extraordinary US governmental initiative and various dedicated research programs in Europe and Asia have led recently to the first cutting-edge achievements of human single-organ and multi-organ engineering based on microphysiological systems. The expectation is that test systems established on this basis would model various disease stages, and predict toxicity, immunogenicity, ADME profiles and treatment efficacy prior to clinical testing. Consequently, this technology could significantly affect the way drug substances are developed in the future. Furthermore, microphysiological system-based assays may revolutionize our current global programs of prioritization of hazard characterization for any new substances to be used, for example, in agriculture, food, ecosystems or cosmetics, thus, replacing laboratory animal models used currently. Thirty-six experts from academia, industry and regulatory bodies present here the results of an intensive workshop (held in June 2015, Berlin, Germany). They review the status quo of microphysiological systems available today against industry needs, and assess the broad variety of approaches with fit-for-purpose potential in the drug development cycle. Feasible technical solutions to reach the next levels of human biology in vitro are proposed. Furthermore, key organ-on-a-chip case studies, as well as various national and international programs are highlighted. Finally, a roadmap into the future is outlined, to allow for more predictive and regulatory-accepted substance testing on a global scale.
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30
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Correia C, Koshkin A, Carido M, Espinha N, Šarić T, Lima PA, Serra M, Alves PM. Effective Hypothermic Storage of Human Pluripotent Stem Cell-Derived Cardiomyocytes Compatible With Global Distribution of Cells for Clinical Applications and Toxicology Testing. Stem Cells Transl Med 2016; 5:658-69. [PMID: 27025693 DOI: 10.5966/sctm.2015-0238] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 01/13/2016] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED To fully explore the potential of human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs), efficient methods for storage and shipment of these cells are required. Here, we evaluated the feasibility to cold store monolayers and aggregates of functional CMs obtained from different PSC lines using a fully defined clinical-compatible preservation formulation and investigated the time frame that hPSC-CMs could be subjected to hypothermic storage. We showed that two-dimensional (2D) monolayers of hPSC-CMs can be efficiently stored at 4°C for 3 days without compromising cell viability. However, cell viability decreased when the cold storage interval was extended to 7 days. We demonstrated that hPSC-CMs are more resistant to prolonged hypothermic storage-induced cell injury in three-dimensional aggregates than in 2D monolayers, showing high cell recoveries (>70%) after 7 days of storage. Importantly, hPSC-CMs maintained their typical (ultra)structure, gene and protein expression profile, electrophysiological profiles, and drug responsiveness. SIGNIFICANCE The applicability of human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs) in the clinic/industry is highly dependent on the development of efficient methods for worldwide shipment of these cells. This study established effective clinically compatible strategies for cold (4°C) storage of hPSC-CMs cultured as two-dimensional (2D) monolayers and three-dimensional (3D) aggregates. Cell recovery of 2D monolayers of hPSC-CMs was found to be dependent on the time of storage, and 3D cell aggregates were more resistant to prolonged cold storage than 2D monolayers. Of note, it was demonstrated that 7 days of cold storage did not affect hPSC-CM ultrastructure, phenotype, or function. This study provides important insights into the cold preservation of PSC-CMs that could be valuable in improving global commercial distribution of hPSC-CMs.
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Affiliation(s)
- Cláudia Correia
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal
| | - Alexey Koshkin
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal
| | - Madalena Carido
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal
| | - Nuno Espinha
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal
| | - Tomo Šarić
- Center for Physiology and Pathophysiology, Institute for Neurophysiology, Medical Faculty, University of Cologne, Cologne, Germany
| | - Pedro A Lima
- Nova Medical School, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Margarida Serra
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal
| | - Paula M Alves
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal
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31
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Techniques of Human Embryonic Stem Cell and Induced Pluripotent Stem Cell Derivation. Arch Immunol Ther Exp (Warsz) 2016; 64:349-70. [PMID: 26939778 PMCID: PMC5021740 DOI: 10.1007/s00005-016-0385-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 11/17/2015] [Indexed: 12/22/2022]
Abstract
Developing procedures for the derivation of human pluripotent stem cells (PSCs) gave rise to novel pathways into regenerative medicine research. For many years, stem cells have attracted attention as a potentially unlimited cell source for cellular therapy in neurodegenerative disorders, cardiovascular diseases, and spinal cord injuries, for example. In these studies, adult stem cells were insufficient; therefore, many attempts were made to obtain PSCs by other means. This review discusses key issues concerning the techniques of pluripotent cell acquisition. Technical and ethical issues hindered the medical use of somatic cell nuclear transfer and embryonic stem cells. Therefore, induced PSCs (iPSCs) emerged as a powerful technique with great potential for clinical applications, patient-specific disease modelling and pharmaceutical studies. The replacement of viral vectors or the administration of analogous proteins or chemical compounds during cell reprogramming are modifications designed to reduce tumorigenesis risk and to augment the procedure efficiency. Intensified analysis of new PSC lines revealed other barriers to overcome, such as epigenetic memory, disparity between human and mouse pluripotency, and variable response to differentiation of some iPSC lines. Thus, multidimensional verification must be conducted to fulfil strict clinical-grade requirements. Nevertheless, the first clinical trials in patients with spinal cord injury and macular dystrophy were recently carried out with differentiated iPSCs, encouraging alternative strategies for potential autologous cellular therapies.
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32
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Zinc Chloride Transiently Maintains Mouse Embryonic Stem Cell Pluripotency by Activating Stat3 Signaling. PLoS One 2016; 11:e0148994. [PMID: 26910359 PMCID: PMC4765890 DOI: 10.1371/journal.pone.0148994] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 01/26/2016] [Indexed: 01/27/2023] Open
Abstract
An improved understanding of the pluripotency maintenance of embryonic stem (ES) cells is important for investigations of early embryo development and for cell replacement therapy, but the mechanism behind pluripotency is still incompletely understood. Recent findings show that zinc, an essential trace element in humans, is critically involved in regulating various signaling pathways and genes expression. However, its role in ES cell fate determination remains to be further explored. Here we showed that 2μM zinc chloride (ZnCl2) transiently maintained mouse ES cell pluripotency in vitro. The cultured mouse ES cells remained undifferentiated under 2μM ZnCl2 treatment in leukemia inhibitory factor (LIF) withdrawal, retinoic acid (RA) or embryoid bodies (EBs) differentiation assays. In addition, ZnCl2 increased pluripotency genes expression and inhibited differentiation genes expression. Further mechanistic studies revealed that ZnCl2 transiently activated signal transducers and activators of transcription 3 (Stat3) signaling through promoting Stat3 phosphorylation. Inhibition of Stat3 signaling abrogated the effects of ZnCl2 on mouse ES cell pluripotency. Taken together, this study demonstrated a critical role of zinc in the pluripotency maintenance of mouse ES cells, as well as an important regulator of Stat3 signaling.
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33
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Calcium signaling in human pluripotent stem cells. Cell Calcium 2016; 59:117-23. [PMID: 26922096 DOI: 10.1016/j.ceca.2016.01.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 01/14/2016] [Accepted: 01/19/2016] [Indexed: 01/24/2023]
Abstract
Human pluripotent stem cells provide new tools for developmental and pharmacological studies as well as for regenerative medicine applications. Calcium homeostasis and ligand-dependent calcium signaling are key components of major cellular responses, including cell proliferation, differentiation or apoptosis. Interestingly, these phenomena have not been characterized in detail as yet in pluripotent human cell sates. Here we review the methods applicable for studying both short- and long-term calcium responses, focusing on the expression of fluorescent calcium indicator proteins and imaging methods as applied in pluripotent human stem cells. We discuss the potential regulatory pathways involving calcium responses in hPS cells and compare these to the implicated pathways in mouse PS cells. A recent development in the stem cell field is the recognition of so called "naïve" states, resembling the earliest potential forms of stem cells during development, as well as the "fuzzy" stem cells, which may be alternative forms of pluripotent cell types, therefore we also discuss the potential role of calcium homeostasis in these PS cell types.
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Yu S, Ma H, Ow JR, Goh Z, Chiang R, Yang H, Loh YH, Wu Q. Zfp553 Is Essential for Maintenance and Acquisition of Pluripotency. Stem Cells Dev 2016; 25:55-67. [DOI: 10.1089/scd.2015.0128] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- Sue Yu
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Hui Ma
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jin Rong Ow
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Ziyi Goh
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Rachel Chiang
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Henry Yang
- Cancer Science Institute of Singapore, Centre for Translational Medicine, Singapore, Singapore
| | - Yuin Han Loh
- Institute of Molecular and Cell Biology, Singapore, Singapore
| | - Qiang Wu
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Pluripotent Stem Cells: Current Understanding and Future Directions. Stem Cells Int 2015; 2016:9451492. [PMID: 26798367 PMCID: PMC4699068 DOI: 10.1155/2016/9451492] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 08/26/2015] [Indexed: 02/06/2023] Open
Abstract
Pluripotent stem cells have the ability to undergo self-renewal and to give rise to all cells of the tissues of the body. However, this definition has been recently complicated by the existence of distinct cellular states that display these features. Here, we provide a detailed overview of the family of pluripotent cell lines derived from early mouse and human embryos and compare them with induced pluripotent stem cells. Shared and distinct features of these cells are reported as additional hallmark of pluripotency, offering a comprehensive scenario of pluripotent stem cells.
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Winiecka-Klimek M, Smolarz M, Walczak MP, Zieba J, Hulas-Bigoszewska K, Kmieciak B, Piaskowski S, Rieske P, Grzela DP, Stoczynska-Fidelus E. SOX2 and SOX2-MYC Reprogramming Process of Fibroblasts to the Neural Stem Cells Compromised by Senescence. PLoS One 2015; 10:e0141688. [PMID: 26535892 PMCID: PMC4633175 DOI: 10.1371/journal.pone.0141688] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 10/11/2015] [Indexed: 11/19/2022] Open
Abstract
Tumorigenic potential of induced pluripotent stem cells (iPSCs) infiltrating population of induced neural stem cells (iNSCs) generated from iPSCs may limit their medical applications. To overcome such a difficulty, direct reprogramming of adult somatic cells into iNSCs was proposed. The aim of this study was the systematic comparison of induced neural cells (iNc) obtained with different methods—direct reprogramming of human adult fibroblasts with either SOX2 (SiNSc-like) or SOX2 and c-MYC (SMiNSc-like) and induced pluripotent stem cells differentiation to ebiNSc—in terms of gene expression profile, differentiation potential as well as proliferation properties. Immunocytochemistry and real-time PCR analyses were used to evaluate gene expression profile and differentiation potential of various iNc types. Bromodeoxyuridine (BrdU) incorporation and senescence-associated beta-galactosidase (SA-β-gal) assays were used to estimate proliferation potential. All three types of iNc were capable of neuronal differentiation; however, astrocytic differentiation was possible only in case of ebiNSc. Contrary to ebiNSc generation, the direct reprogramming was rarely a propitious process, despite 100% transduction efficiency. The potency of direct iNSCs-like cells generation was lower as compared to iNSCs obtained by iPSCs differentiation, and only slightly improved when c-MYC was added. Directly reprogrammed iNSCs-like cells were lacking the ability to differentiate into astrocytic cells and characterized by poor efficiency of neuronal cells formation. Such features indicated that these cells could not be fully reprogrammed, as confirmed mainly with senescence detection. Importantly, SiNSc-like and SMiNSc-like cells were unable to achieve the long-term survival and became senescent, which limits their possible therapeutic applicability. Our results suggest that iNSCs-like cells, generated in the direct reprogramming attempts, were either not fully reprogrammed or reprogrammed only into neuronal progenitors, mainly because of the inaccuracies of currently available protocols.
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Affiliation(s)
- Marta Winiecka-Klimek
- Department of Research and Development, Celther Polska, Lodz, Poland
- Department of Tumor Biology, Medical University of Lodz, Lodz, Poland
- * E-mail:
| | - Maciej Smolarz
- Department of Research and Development, Celther Polska, Lodz, Poland
- Department of Tumor Biology, Medical University of Lodz, Lodz, Poland
| | - Maciej P. Walczak
- Department of Research and Development, Celther Polska, Lodz, Poland
| | - Jolanta Zieba
- Department of Research and Development, Celther Polska, Lodz, Poland
- Department of Tumor Biology, Medical University of Lodz, Lodz, Poland
| | | | - Blazej Kmieciak
- Department of Medical Law, Chair of Human Sciences, Medical University of Lodz, Lodz, Poland
| | - Sylwester Piaskowski
- Department of Research and Development, Celther Polska, Lodz, Poland
- Department of Tumor Biology, Medical University of Lodz, Lodz, Poland
| | - Piotr Rieske
- Department of Research and Development, Celther Polska, Lodz, Poland
- Department of Tumor Biology, Medical University of Lodz, Lodz, Poland
| | - Dawid P. Grzela
- Department of Research and Development, Celther Polska, Lodz, Poland
| | - Ewelina Stoczynska-Fidelus
- Department of Research and Development, Celther Polska, Lodz, Poland
- Department of Tumor Biology, Medical University of Lodz, Lodz, Poland
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Differences in the Early Development of Human and Mouse Embryonic Stem Cells. PLoS One 2015; 10:e0140803. [PMID: 26473594 PMCID: PMC4608779 DOI: 10.1371/journal.pone.0140803] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 09/30/2015] [Indexed: 01/22/2023] Open
Abstract
We performed a systematic analysis of gene expression features in early (10–21 days) development of human vs mouse embryonic cells (hESCs vs mESCs). Many development features were found to be conserved, and a majority of differentially regulated genes have similar expression change in both organisms. The similarity is especially evident, when gene expression profiles are clustered together and properties of clustered groups of genes are compared. First 10 days of mESC development match the features of hESC development within 21 days, in accordance with the differences in population doubling time in human and mouse ESCs. At the same time, several important differences are seen. There is a clear difference in initial expression change of transcription factors and stimulus responsive genes, which may be caused by the difference in experimental procedures. However, we also found that some biological processes develop differently; this can clearly be shown, for example, for neuron and sensory organ development. Some groups of genes show peaks of the expression levels during the development and these peaks cannot be claimed to happen at the same time points in the two organisms, as well as for the same groups of (orthologous) genes. We also detected a larger number of upregulated genes during development of mESCs as compared to hESCs. The differences were quantified by comparing promoters of related genes. Most of gene groups behave similarly and have similar transcription factor (TF) binding sites on their promoters. A few groups of genes have similar promoters, but are expressed differently in two species. Interestingly, there are groups of genes expressed similarly, although they have different promoters, which can be shown by comparing their TF binding sites. Namely, a large group of similarly expressed cell cycle-related genes is found to have discrepant TF binding properties in mouse vs human.
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Park S, Kim D, Jung YG, Roh S. Thiazovivin, a Rho kinase inhibitor, improves stemness maintenance of embryo-derived stem-like cells under chemically defined culture conditions in cattle. Anim Reprod Sci 2015; 161:47-57. [DOI: 10.1016/j.anireprosci.2015.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 08/11/2015] [Accepted: 08/11/2015] [Indexed: 01/04/2023]
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Friend K, Brooks HA, Propson NE, Thomson JA, Kimble J. Embryonic Stem Cell Growth Factors Regulate eIF2α Phosphorylation. PLoS One 2015; 10:e0139076. [PMID: 26406898 PMCID: PMC4583406 DOI: 10.1371/journal.pone.0139076] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 09/09/2015] [Indexed: 12/18/2022] Open
Abstract
Growth factors and transcription factors are well known to regulate pluripotent stem cells, but less is known about translational control in stem cells. Here, we use embryonic stem cells (ESCs) to investigate a connection between ESC growth factors and eIF2α-mediated translational control (eIF2α phosphorylation promotes protein expression from mRNAs with upstream open-reading frames, or uORFs). We find abundant phosphorylated P-eIF2α (P-eIF2α) in both pluripotent mouse and human ESCs, but little P-eIF2α in ESCs triggered to differentiate. We show that the growth factors LIF (leukemia inhibitory factor) and BMP4 (bone morphogenic protein 4) both maintain P-eIF2α in mESCs, but use distinct mechanisms: LIF inhibits an eIF2α phosphatase whereas BMP4 activates an eIF2α kinase. The mRNAs encoding the pluripotency factors Nanog and c-Myc possess uORFs while Oct4 mRNA does not. We find that salubrinal, a chemical that increases eIF2α phosphorylation, promotes Nanog and c-Myc expression, but not Oct4 expression. These experiments connect ESC growth factors to eIF2α phosphorylation and suggest a chemical substitute for LIF to enhance Nanog and c-Myc expression.
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Affiliation(s)
- Kyle Friend
- Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, United States of America
- Department of Chemistry and Biochemistry, Washington and Lee University, Lexington, Virginia, 24450, United States of America
- * E-mail: (KF); (JK)
| | - Hunter A. Brooks
- Department of Chemistry and Biochemistry, Washington and Lee University, Lexington, Virginia, 24450, United States of America
| | - Nicholas E. Propson
- The Morgridge Institute for Research, 309 North Orchard Street, Madison, Wisconsin, 53715, United States of America
| | - James A. Thomson
- The Morgridge Institute for Research, 309 North Orchard Street, Madison, Wisconsin, 53715, United States of America
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, 53706, United States of America
| | - Judith Kimble
- Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, United States of America
- Howard Hughes Medical Institute, University of Wisconsin-Madison, Madison, Wisconsin, 53706, United States of America
- * E-mail: (KF); (JK)
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Cvoro A, Devito L, Milton FA, Noli L, Zhang A, Filippi C, Sakai K, Suh JH, H Sieglaff D, Dhawan A, Sakai T, Ilic D, Webb P. A thyroid hormone receptor/KLF9 axis in human hepatocytes and pluripotent stem cells. Stem Cells 2015; 33:416-28. [PMID: 25330987 PMCID: PMC6317531 DOI: 10.1002/stem.1875] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 08/21/2014] [Accepted: 09/13/2014] [Indexed: 12/15/2022]
Abstract
Biological processes require close cooperation of multiple transcription factors that integrate different signals. Thyroid hormone receptors (TRs) induce Krüppel-like factor 9 (KLF9) to regulate neurogenesis. Here, we show that triiodothyronine (T3) also works through TR to induce KLF9 in HepG2 liver cells, mouse liver, and mouse and human primary hepatocytes and sought to understand TR/KLF9 network function in the hepatocyte lineage and stem cells. Knockdown experiments reveal that KLF9 regulates hundreds of HepG2 target genes and modulates T3 response. Together, T3 and KLF9 target genes influence pathways implicated in stem cell self-renewal and differentiation, including Notch signaling, and we verify that T3 and KLF9 cooperate to regulate key Notch pathway genes and work independently to regulate others. T3 also induces KLF9 in human embryonic stem cells (hESCs) and human induced pluripotent stem cells (hiPSC) and this effect persists during differentiation to definitive endoderm and hiPSC-derived hepatocytes. Microarray analysis reveals that T3 regulates hundreds of hESC and hiPSC target genes that cluster into many of the same pathways implicated in TR and KLF9 regulation in HepG2 cells. KLF9 knockdown confirms that TR and KLF9 cooperate to regulate Notch pathway genes in hESC and hiPSC, albeit in a partly cell-specific manner. Broader analysis of T3 responsive hESC/hiPSC genes suggests that TRs regulate multiple early steps in ESC differentiation. We propose that TRs cooperate with KLF9 to regulate hepatocyte proliferation and differentiation and early stages of organogenesis and that TRs exert widespread and important influences on ESC biology.
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Affiliation(s)
- Aleksandra Cvoro
- Genomic Medicine, Houston Methodist Research Institute, Houston, Texas, USA
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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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Fonseca SAS, Costas RM, Pereira LV. Searching for naïve human pluripotent stem cells. World J Stem Cells 2015; 7:649-656. [PMID: 25914771 PMCID: PMC4404399 DOI: 10.4252/wjsc.v7.i3.649] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Accepted: 01/20/2015] [Indexed: 02/06/2023] Open
Abstract
Normal mouse pluripotent stem cells were originally derived from the inner cell mass (ICM) of blastocysts and shown to be the in vitro equivalent of those pre-implantation embryonic cells, and thus were called embryonic stem cells (ESCs). More than a decade later, pluripotent cells were isolated from the ICM of human blastocysts. Despite being called human ESCs, these cells differ significantly from mouse ESCs, including different morphology and mechanisms of control of pluripotency, suggesting distinct embryonic origins of ESCs from the two species. Subsequently, mouse pluripotent stem cells were established from the ICM-derived epiblast of post-implantation embryos. These mouse epiblast stem cells (EpiSCs) are morphological and epigenetically more similar to human ESCs. This raised the question of whether cells from the human ICM are in a more advanced differentiation stage than their murine counterpart, or whether the available culture conditions were not adequate to maintain those human cells in their in vivo state, leading to a transition into EpiSC-like cells in vitro. More recently, novel culture conditions allowed the conversion of human ESCs into mouse ESC-like cells called naïve (or ground state) human ESCs, and the derivation of naïve human ESCs from blastocysts. Here we will review the characteristics of each type of pluripotent stem cells, how (and whether) these relate to different stages of embryonic development, and discuss the potential implications of naïve human ESCs in research and therapy.
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CDK1 inhibition targets the p53-NOXA-MCL1 axis, selectively kills embryonic stem cells, and prevents teratoma formation. Stem Cell Reports 2015; 4:374-89. [PMID: 25733019 PMCID: PMC4375943 DOI: 10.1016/j.stemcr.2015.01.019] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 01/25/2015] [Accepted: 01/26/2015] [Indexed: 11/22/2022] Open
Abstract
Embryonic stem cells (ESCs) have adopted an accelerated cell-cycle program with shortened gap phases and precocious expression of cell-cycle regulatory proteins, including cyclins and cyclin-dependent kinases (CDKs). We examined the effect of CDK inhibition on the pathways regulating proliferation and survival of ESCs. We found that inhibiting cyclin-dependent kinase 1 (CDK1) leads to activation of the DNA damage response, nuclear p53 stabilization, activation of a subset of p53 target genes including NOXA, and negative regulation of the anti-apoptotic protein MCL1 in human and mouse ESCs, but not differentiated cells. We demonstrate that MCL1 is highly expressed in ESCs and loss of MCL1 leads to ESC death. Finally, we show that clinically relevant CDK1 inhibitors prevent formation of ESC-derived tumors and induce necrosis in established ESC-derived tumors. Our data demonstrate that ES cells are uniquely sensitive to CDK1 inhibition via a p53/NOXA/MCL1 pathway.
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Batista PJ, Molinie B, Wang J, Qu K, Zhang J, Li L, Bouley DM, Lujan E, Haddad B, Daneshvar K, Carter AC, Flynn RA, Zhou C, Lim KS, Dedon P, Wernig M, Mullen AC, Xing Y, Giallourakis CC, Chang HY. m(6)A RNA modification controls cell fate transition in mammalian embryonic stem cells. Cell Stem Cell 2014; 15:707-19. [PMID: 25456834 DOI: 10.1016/j.stem.2014.09.019] [Citation(s) in RCA: 884] [Impact Index Per Article: 88.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 08/14/2014] [Accepted: 09/30/2014] [Indexed: 12/21/2022]
Abstract
N6-methyl-adenosine (m(6)A) is the most abundant modification on messenger RNAs and is linked to human diseases, but its functions in mammalian development are poorly understood. Here we reveal the evolutionary conservation and function of m(6)A by mapping the m(6)A methylome in mouse and human embryonic stem cells. Thousands of messenger and long noncoding RNAs show conserved m(6)A modification, including transcripts encoding core pluripotency transcription factors. m(6)A is enriched over 3' untranslated regions at defined sequence motifs and marks unstable transcripts, including transcripts turned over upon differentiation. Genetic inactivation or depletion of mouse and human Mettl3, one of the m(6)A methylases, led to m(6)A erasure on select target genes, prolonged Nanog expression upon differentiation, and impaired ESC exit from self-renewal toward differentiation into several lineages in vitro and in vivo. Thus, m(6)A is a mark of transcriptome flexibility required for stem cells to differentiate to specific lineages.
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Affiliation(s)
- Pedro J Batista
- Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Benoit Molinie
- Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Jinkai Wang
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kun Qu
- Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jiajing Zhang
- Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Lingjie Li
- Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Donna M Bouley
- Department of Comparative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ernesto Lujan
- Institute for Stem Cell Biology and Regenerative Medicine and Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Bahareh Haddad
- Institute for Stem Cell Biology and Regenerative Medicine and Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Kaveh Daneshvar
- Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Ava C Carter
- Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ryan A Flynn
- Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Chan Zhou
- Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Kok-Seong Lim
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Peter Dedon
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Marius Wernig
- Institute for Stem Cell Biology and Regenerative Medicine and Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alan C Mullen
- Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Yi Xing
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA.
| | - Cosmas C Giallourakis
- Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA.
| | - Howard Y Chang
- Howard Hughes Medical Institute and Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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Chen C, Dubin R, Kim MC. Emerging trends and new developments in regenerative medicine: a scientometric update (2000 - 2014). Expert Opin Biol Ther 2014; 14:1295-317. [PMID: 25077605 DOI: 10.1517/14712598.2014.920813] [Citation(s) in RCA: 330] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Our previous scientometric review of regenerative medicine provides a snapshot of the fast-growing field up to the end of 2011. The new review identifies emerging trends and new developments appearing in the literature of regenerative medicine based on relevant articles and reviews published between 2000 and the first month of 2014. AREAS COVERED Multiple datasets of publications relevant to regenerative medicine are constructed through topic search and citation expansion to ensure adequate coverage of the field. Networks of co-cited references representing the literature of regenerative medicine are constructed and visualized based on a combined dataset of 71,393 articles published between 2000 and 2014. Structural and temporal dynamics are identified in terms of most active topical areas and cited references. New developments are identified in terms of newly emerged clusters and research areas. Disciplinary-level patterns are visualized in dual-map overlays. EXPERT OPINION While research in induced pluripotent stem cells remains the most prominent area in the field of regenerative medicine, research related to clinical and therapeutic applications in regenerative medicine has experienced a considerable growth. In addition, clinical and therapeutic developments in regenerative medicine have demonstrated profound connections with the induced pluripotent stem cell research and stem cell research in general. A rapid adaptation of graphene-based nanomaterials in regenerative medicine is evident. Both basic research represented by stem cell research and application-oriented research typically found in tissue engineering are now increasingly integrated in the scientometric landscape of regenerative medicine. Tissue engineering is an interdisciplinary field in its own right. Advances in multiple disciplines such as stem cell research and graphene research have strengthened the connections between tissue engineering and regenerative medicine.
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Affiliation(s)
- Chaomei Chen
- Drexel University, College of Computing and Informatics , 3141 Chestnut Street, Philadelphia, PA 19104-2875 , USA
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Hong SG, Winkler T, Wu C, Guo V, Pittaluga S, Nicolae A, Donahue RE, Metzger ME, Price SD, Uchida N, Kuznetsov SA, Kilts T, Li L, Robey PG, Dunbar CE. Path to the clinic: assessment of iPSC-based cell therapies in vivo in a nonhuman primate model. Cell Rep 2014; 7:1298-1309. [PMID: 24835994 DOI: 10.1016/j.celrep.2014.04.019] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 02/09/2014] [Accepted: 04/09/2014] [Indexed: 01/22/2023] Open
Abstract
Induced pluripotent stem cell (iPSC)-based cell therapies have great potential for regenerative medicine but are also potentially associated with tumorigenic risks. Current rodent models are not optimal predictors of efficiency and safety for clinical application. Therefore, we developed a clinically relevant nonhuman primate model to assess the tumorigenic potential and in vivo efficacy of both undifferentiated and differentiated iPSCs in autologous settings without immunosuppression. Undifferentiated autologous iPSCs indeed form mature teratomas in a dose-dependent manner. However, tumor formation is accompanied by an inflammatory reaction. On the other hand, iPSC-derived mesodermal stromal-like cells form new bone in vivo without any evidence of teratoma formation. We therefore show in a large animal model that closely resembles human physiology that undifferentiated autologous iPSCs form teratomas, and that iPSC-derived progenitor cells can give rise to a functional tissue in vivo.
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Affiliation(s)
- So Gun Hong
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Thomas Winkler
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Chuanfeng Wu
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Vicky Guo
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Stefania Pittaluga
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Alina Nicolae
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Robert E Donahue
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Mark E Metzger
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Sandra D Price
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Naoya Uchida
- Molecular and Clinical Hematology Branch, National Heart Lung and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Sergei A Kuznetsov
- Craniofacial and Skeletal Diseases Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Tina Kilts
- Craniofacial and Skeletal Diseases Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Li Li
- Craniofacial and Skeletal Diseases Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Pamela G Robey
- Craniofacial and Skeletal Diseases Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Cynthia E Dunbar
- Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
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Regulatory sequences of the porcine THBD gene facilitate endothelial-specific expression of bioactive human thrombomodulin in single- and multitransgenic pigs. Transplantation 2014; 97:138-47. [PMID: 24150517 DOI: 10.1097/tp.0b013e3182a95cbc] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Among other mismatches between human and pig, incompatibilities in the blood coagulation systems hamper the xenotransplantation of vascularized organs. The provision of the porcine endothelium with human thrombomodulin (hTM) is hypothesized to overcome the impaired activation of protein C by a heterodimer consisting of human thrombin and porcine TM. METHODS We evaluated regulatory regions of the THBD gene, optimized vectors for transgene expression, and generated hTM expressing pigs by somatic cell nuclear transfer. Genetically modified pigs were characterized at the molecular, cellular, histological, and physiological levels. RESULTS A 7.6-kb fragment containing the entire upstream region of the porcine THBD gene was found to drive a high expression in a porcine endothelial cell line and was therefore used to control hTM expression in transgenic pigs. The abundance of hTM was restricted to the endothelium, according to the predicted pattern, and the transgene expression of hTM was stably inherited to the offspring. When endothelial cells from pigs carrying the hTM transgene--either alone or in combination with an aGalTKO and a transgene encoding the human CD46-were tested in a coagulation assay with human whole blood, the clotting time was increased three- to four-fold (P<0.001) compared to wild-type and aGalTKO/CD46 transgenic endothelial cells. This, for the first time, demonstrated the anticoagulant properties of hTM on porcine endothelial cells in a human whole blood assay. CONCLUSIONS The biological efficacy of hTM suggests that the (multi-)transgenic donor pigs described here have the potential to overcome coagulation incompatibilities in pig-to-primate xenotransplantation.
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De Paepe C, Krivega M, Cauffman G, Geens M, Van de Velde H. Totipotency and lineage segregation in the human embryo. ACTA ACUST UNITED AC 2014; 20:599-618. [DOI: 10.1093/molehr/gau027] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Tsai SC, Chang DF, Hong CM, Xia P, Senadheera D, Trump L, Mishra S, Lutzko C. Induced overexpression of OCT4A in human embryonic stem cells increases cloning efficiency. Am J Physiol Cell Physiol 2014; 306:C1108-18. [PMID: 24627557 DOI: 10.1152/ajpcell.00205.2013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Our knowledge of the molecular mechanisms underlying human embryonic stem cell (hESC) self-renewal and differentiation is incomplete. The level of octamer-binding transcription factor 4 (Oct4), a critical regulator of pluripotency, is precisely controlled in mouse embryonic stem cells. However, studies of human OCT4 are often confounded by the presence of three isoforms and six expressed pseudogenes, which has complicated the interpretation of results. Using an inducible lentiviral overexpression and knockdown system to manipulate OCT4A above or below physiological levels, we specifically examine the functional role of the OCT4A isoform in hESC. (We also designed and generated a comparable series of vectors, which were not functional, for the overexpression and knockdown of OCT4B.) We show that specific knockdown of OCT4A results in hESC differentiation, as indicated by morphology changes, cell surface antigen expression, and upregulation of ectodermal genes. In contrast, inducible overexpression of OCT4A in hESC leads to a transient instability of the hESC phenotype, as indicated by changes in morphology, cell surface antigen expression, and transcriptional profile, that returns to baseline within 5 days. Interestingly, sustained expression of OCT4A past 5 days enhances hESC cloning efficiency, suggesting that higher levels of OCT4A can support self-renewal. Overall, our results indicate that high levels of OCT4A increase hESC cloning efficiency and do not induce differentiation (whereas OCT4B expression cannot be induced in hESC), highlighting the importance of isoform-specific studies in a stable and inducible expression system for human OCT4. Additionally, we demonstrate the utility of an efficient method for conditional gene expression in hESC.
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Affiliation(s)
- Steven C Tsai
- Division of Research Immunology and Bone Marrow Transplantation, Department of Pediatrics, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Los Angeles, California
| | - David F Chang
- Division of Research Immunology and Bone Marrow Transplantation, Department of Pediatrics, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Los Angeles, California
| | - Chang-Mu Hong
- Division of Research Immunology and Bone Marrow Transplantation, Department of Pediatrics, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Los Angeles, California
| | - Ping Xia
- Division of Research Immunology and Bone Marrow Transplantation, Department of Pediatrics, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Los Angeles, California
| | - Dinithi Senadheera
- Division of Research Immunology and Bone Marrow Transplantation, Department of Pediatrics, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Los Angeles, California
| | - Lisa Trump
- Division of Experimental Hematology and Cancer Biology, Department of Pediatrics, Children's Hospital Research Foundation, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; and
| | - Suparna Mishra
- Division of Research Immunology and Bone Marrow Transplantation, Department of Pediatrics, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Los Angeles, California
| | - Carolyn Lutzko
- Division of Research Immunology and Bone Marrow Transplantation, Department of Pediatrics, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Los Angeles, California; Division of Experimental Hematology and Cancer Biology, Department of Pediatrics, Children's Hospital Research Foundation, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; and Division of Regenerative Medicine and Cellular Therapies, Hoxworth Blood Center, University of Cincinnati, Cincinnati, Ohio
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50
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Hirata N, Nakagawa M, Fujibayashi Y, Yamauchi K, Murata A, Minami I, Tomioka M, Kondo T, Kuo TF, Endo H, Inoue H, Sato SI, Ando S, Kawazoe Y, Aiba K, Nagata K, Kawase E, Chang YT, Suemori H, Eto K, Nakauchi H, Yamanaka S, Nakatsuji N, Ueda K, Uesugi M. A chemical probe that labels human pluripotent stem cells. Cell Rep 2014; 6:1165-1174. [PMID: 24613351 DOI: 10.1016/j.celrep.2014.02.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 01/14/2014] [Accepted: 02/04/2014] [Indexed: 12/22/2022] Open
Abstract
A small-molecule fluorescent probe specific for human pluripotent stem cells would serve as a useful tool for basic cell biology research and stem cell therapy. Screening of fluorescent chemical libraries with human induced pluripotent stem cells (iPSCs) and subsequent evaluation of hit molecules identified a fluorescent compound (Kyoto probe 1 [KP-1]) that selectively labels human pluripotent stem cells. Our analyses indicated that the selectivity results primarily from a distinct expression pattern of ABC transporters in human pluripotent stem cells and from the transporter selectivity of KP-1. Expression of ABCB1 (MDR1) and ABCG2 (BCRP), both of which cause the efflux of KP-1, is repressed in human pluripotent stem cells. Although KP-1, like other pluripotent markers, is not absolutely specific for pluripotent stem cells, the identified chemical probe may be used in conjunction with other reagents.
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Affiliation(s)
- Nao Hirata
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Masato Nakagawa
- Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan
| | - Yuto Fujibayashi
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Kaori Yamauchi
- Stem Cell Research Center, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Asako Murata
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Itsunari Minami
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan
| | - Maiko Tomioka
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan
| | - Takayuki Kondo
- Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan
| | - Ting-Fang Kuo
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hiroshi Endo
- Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan; Laboratory of Stem Cell Therapy, Center for Experimental Medicine, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Haruhisa Inoue
- Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan
| | - Shin-Ichi Sato
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Shin Ando
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yoshinori Kawazoe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Kazuhiro Aiba
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan
| | - Koh Nagata
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan
| | - Eihachiro Kawase
- Stem Cell Research Center, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Young-Tae Chang
- Department of Chemistry & MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Singapore; Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A(∗)STAR), Singapore 138667, Singapore
| | - Hirofumi Suemori
- Stem Cell Research Center, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Koji Eto
- Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan
| | - Hiromitsu Nakauchi
- Laboratory of Stem Cell Therapy, Center for Experimental Medicine, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Shinya Yamanaka
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan
| | - Norio Nakatsuji
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Stem Cell Research Center, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan.
| | - Kazumitsu Ueda
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.
| | - Motonari Uesugi
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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