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Zhang Y, Liu K, He H, Xiao H, Fang Z, Chen X, Li H. Innovative explorations: unveiling the potential of organoids for investigating environmental pollutant exposure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:16256-16273. [PMID: 38342830 DOI: 10.1007/s11356-024-32256-7] [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: 09/21/2023] [Accepted: 01/25/2024] [Indexed: 02/13/2024]
Abstract
As the economy rapidly develops, chemicals are widely produced and used. This has exacerbated the problems associated with environmental pollution, raising the need for efficient toxicological evaluation techniques to investigate the toxic effects and mechanisms of toxicity of environmental pollutants. The progress in the techniques of cell culture in three dimensions has resulted in the creation of models that are more relevant in terms of biology and physiology. This enables researchers to study organ development, toxicology, and drug screening. Adult stem cells (ASCs) and induced pluripotent stem cells (iPSCs) can be obtained from various mammalian tissues, including cancerous and healthy tissues. Such stem cells exhibit a significant level of tissue memory and ability to self-assemble. When cultivated in 3D in vitro environments, the resulting organoids demonstrate a remarkable capacity to recapitulate the cellular composition and function of organs in vivo. Recently, many tumors' tissue-derived organoids have been widely used in research on tumor pathogenesis, drug development, precision medicine, and other fields, including those derived from colon cancer, cholangiocarcinoma, liver cancer, and gastric cancer. However, the application of organoid models for evaluating the toxicity of environmental pollutants is still in its infancy. This review introduces the characteristics of the toxicity responses of organoid models upon exposure to pollutants from the perspectives of organoid characteristics, tissue types, and their applications in toxicology; discusses the feasibility of using organoid models in evaluating the toxicity of pollutants; and provides a reference for future toxicological studies on environmental pollutants based on organoid models.
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Affiliation(s)
- Yuanhang Zhang
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Kai Liu
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Huan He
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
- Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Nanjing, 210023, China
| | - Hui Xiao
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Zhihong Fang
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Xianxian Chen
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Huiming Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
- Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Nanjing, 210023, China.
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Smiriglia A, Lorito N, Serra M, Perra A, Morandi A, Kowalik MA. Sex difference in liver diseases: How preclinical models help to dissect the sex-related mechanisms sustaining NAFLD and hepatocellular carcinoma. iScience 2023; 26:108363. [PMID: 38034347 PMCID: PMC10682354 DOI: 10.1016/j.isci.2023.108363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023] Open
Abstract
Only a few preclinical findings are confirmed in the clinic, posing a critical issue for clinical development. Therefore, identifying the best preclinical models can help to dissect molecular and mechanistic insights into liver disease pathogenesis while being clinically relevant. In this context, the sex relevance of most preclinical models has been only partially considered. This is particularly significant in NAFLD and HCC, which have a higher prevalence in men when compared to pre-menopause women but not to those in post-menopausal status, suggesting a role for sex hormones in the pathogenesis of the diseases. This review gathers the sex-relevant findings and the available preclinical models focusing on both in vitro and in vivo studies and discusses the potential implications and perspectives of introducing the sex effect in the selection of the best preclinical model. This is a critical aspect that would help to tailor personalized therapies based on sex.
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Affiliation(s)
- Alfredo Smiriglia
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
| | - Nicla Lorito
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
| | - Marina Serra
- Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy
| | - Andrea Perra
- Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy
| | - Andrea Morandi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
| | - Marta Anna Kowalik
- Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy
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3
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Li R, Zhao Y, Yourick JJ, Sprando RL, Gao X. Phenotypical, functional and transcriptomic comparison of two modified methods of hepatocyte differentiation from human induced pluripotent stem cells. Biomed Rep 2022; 16:43. [PMID: 35371477 PMCID: PMC8972237 DOI: 10.3892/br.2022.1526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/18/2022] [Indexed: 02/06/2023] Open
Abstract
Directed differentiation of human induced pluripotent stem cells (iPSCs) into hepatocytes could provide an unlimited source of liver cells, and therefore holds great promise for regenerative medicine, disease modeling, drug screening and toxicology studies. Various methods have been established during the past decade to differentiate human iPSCs into hepatocyte-like cells (HLCs) using growth factors and/or small molecules. However, direct comparison of the differentiation efficiency and the quality of the final HLCs between different methods has rarely been reported. In the current study, two hepatocyte differentiation methods were devised, termed Method 1 and 2, through modifying existing well-known hepatocyte differentiation strategies, and the resultant cells were compared phenotypically and functionally at different stages of hepatocyte differentiation. Compared to Method 1, higher differentiation efficiency and reproducibility were observed in Method 2, which generated highly homogeneous functional HLCs at the end of the differentiation process. The cells exhibited morphology closely resembling primary human hepatocytes and expressed high levels of hepatic protein markers. More importantly, these HLCs demonstrated several essential characteristics of mature hepatocytes, including major serum protein (albumin, fibronectin and α-1 antitrypsin) secretion, urea release, glycogen storage and inducible cytochrome P450 activity. Further transcriptomic comparison of the HLCs derived from the two methods identified 1,481 differentially expressed genes (DEGs); 290 Gene Ontology terms in the biological process category were enriched by these genes, which were further categorized into 34 functional classes. Pathway analysis of the DEGs identified several signaling pathways closely involved in hepatocyte differentiation of pluripotent stem cells, including 'signaling pathways regulating pluripotency of stem cells', 'Wnt signaling pathway', 'TGF-beta signaling pathway' and 'PI3K-Akt signaling pathway'. These results may provide a molecular basis for the differences observed between the two differentiation methods and suggest ways to further improve hepatocyte differentiation in order to obtain more mature HLCs for biomedical applications.
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Affiliation(s)
- Rong Li
- Division of Toxicology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD 20708, USA
| | - Yang Zhao
- Division of Toxicology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD 20708, USA
| | - Jeffrey J Yourick
- Division of Toxicology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD 20708, USA
| | - Robert L Sprando
- Division of Toxicology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD 20708, USA
| | - Xiugong Gao
- Division of Toxicology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD 20708, USA
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4
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Sun L, Hui L. Progress in human liver organoids. J Mol Cell Biol 2021; 12:607-617. [PMID: 32236564 PMCID: PMC7683012 DOI: 10.1093/jmcb/mjaa013] [Citation(s) in RCA: 156] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/30/2019] [Accepted: 03/30/2020] [Indexed: 12/24/2022] Open
Abstract
Understanding the development, regeneration, and disorders of the liver is the major goal in liver biology. Current mechanistic knowledge of human livers has been largely derived from mouse models and cell lines, which fall short in recapitulating the features of human liver cells or the structures and functions of human livers. Organoids as an in vitro system hold the promise to generate organ-like tissues in a dish. Recent advances in human liver organoids also facilitate the understanding of the biology and diseases in this complex organ. Here we review the progress in human liver organoids, mainly focusing on the methods to generate liver organoids, their applications, and possible future directions.
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Affiliation(s)
- Lulu Sun
- State Key Laboratory of Cell Biology, Chinese Academy of Sciences Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Lijian Hui
- State Key Laboratory of Cell Biology, Chinese Academy of Sciences Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China.,Bio-Research Innovation Center, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Suzhou 215121, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
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Zabulica M, Srinivasan RC, Vosough M, Hammarstedt C, Wu T, Gramignoli R, Ellis E, Kannisto K, Collin de l'Hortet A, Takeishi K, Soto-Gutierrez A, Strom SC. Guide to the Assessment of Mature Liver Gene Expression in Stem Cell-Derived Hepatocytes. Stem Cells Dev 2020; 28:907-919. [PMID: 31122128 PMCID: PMC6648222 DOI: 10.1089/scd.2019.0064] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Differentiation of stem cells to hepatocyte-like cells (HLCs) holds great promise for basic research, drug and toxicological investigations, and clinical applications. There are currently no protocols for the production of HLCs from stem cells, such as embryonic stem cells or induced pluripotent stem cells, that produce fully mature hepatocytes with a wide range of mature hepatic functions. This report describes a standard method to assess the maturation of stem cell-derived HLCs with a moderately high-throughput format, by analysing liver gene expression by quantitative RT-qPCR. This method also provides a robust data set of the expression of 62 genes expressed in normal liver, generated from 17 fetal and 25 mature human livers, so that investigators can quickly and easily compare the expression of these genes in their stem cell-derived HLCs with the values obtained in authentic fetal and mature human liver. The simple methods described in this study will provide a quick and accurate assessment of the efficacy of a differentiation protocol and will help guide the optimization of differentiation conditions.
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Affiliation(s)
- Mihaela Zabulica
- 1Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Raghuraman C Srinivasan
- 1Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | | | - Christina Hammarstedt
- 1Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Tingting Wu
- 1Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Roberto Gramignoli
- 1Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ewa Ellis
- 3Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
| | - Kristina Kannisto
- 4Department of Laboratory Medicine, Clinical Research Centre, Karolinska Institutet, Stockholm, Sweden
| | | | - Kazuki Takeishi
- 5Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Stephen C Strom
- 1Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
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Fischer L, Lucendo-Villarin B, Hay DC, O’Farrelly C. Human PSC-Derived Hepatocytes Express Low Levels of Viral Pathogen Recognition Receptors, but Are Capable of Mounting an Effective Innate Immune Response. Int J Mol Sci 2020; 21:ijms21113831. [PMID: 32481600 PMCID: PMC7312201 DOI: 10.3390/ijms21113831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 04/30/2020] [Accepted: 05/24/2020] [Indexed: 01/19/2023] Open
Abstract
Hepatocytes are key players in the innate immune response to liver pathogens but are challenging to study because of inaccessibility and a short half-life. Recent advances in in vitro differentiation of hepatocyte-like cells (HLCs) facilitated studies of hepatocyte-pathogen interactions. Here, we aimed to define the anti-viral innate immune potential of human HLCs with a focus on toll-like receptor (TLR)-expression and the presence of a metabolic switch. We analysed cytoplasmic pattern recognition receptor (PRR)- and endosomal TLR-expression and activity and adaptation of HLCs to an inflammatory environment. We found that transcript levels of retinoic acid inducible gene I (RIG-I), melanoma differentiation antigen 5 (MDA5), and TLR3 became downregulated during differentiation, indicating the acquisition of a more tolerogenic phenotype, as expected in healthy hepatocytes. HLCs responded to activation of RIG-I by producing interferons (IFNs) and IFN-stimulated genes. Despite low-level expression of TLR3, receptor expression was upregulated in an inflammatory environment. TLR3 signalling induced expression of proinflammatory cytokines at the gene level, indicating that several PRRs need to interact for successful innate immune activation. The inflammatory responsiveness of HLCs was accompanied by the downregulation of cytochrome P450 3A and 1A2 activity and decreased serum protein production, showing that the metabolic switch seen in primary hepatocytes during anti-viral responses is also present in HLCs.
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Affiliation(s)
- Lena Fischer
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland;
| | | | - David C. Hay
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK;
- Correspondence: (D.C.H.); (C.O.)
| | - Cliona O’Farrelly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland;
- School of Medicine, Trinity Biomedical Science Institute, Trinity College Dublin, Dublin 2, Ireland
- Correspondence: (D.C.H.); (C.O.)
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Kumar PS, Chandrasekhar C, Srikanth L, Sarma PVGK. Down-regulation of SOX17, GATA4 and FoxA2 promotes differentiation potential of hepatocytes from human hematopoietic stem cells. Tissue Cell 2020; 62:101312. [PMID: 32433020 DOI: 10.1016/j.tice.2019.101312] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 01/30/2023]
Abstract
The failure of regeneration of damaged liver in various end-stage liver diseases results in high morbidity and mortality. In this context, we have demonstrated the differentiation ability of human hematopoietic stem cells (HSCs) into hepatocytes. In this study, HSCs were isolated from a donor and cultured which exhibited the presence of CD34 and CD133 and absence of CD90 and CD73 markers. These CD34+ HSCs were induced for 21 days in hepatocyte differentiation medium (HDM). The obtained cells were characterized by immunocytochemical, immunofluorescence, western blot, qRT-PCR and flow cytometry analysis. Further, functional assays were done to accentuate the differentiated cells are hepatocytes. In HDM at day 6 differentiated cells showed the expression of definitive endodermal (DE) markers, SOX17, GATA4 and FoxA2 indicating the beginning of differentiation process. At day 21 the flow cytometry analysis showed 84.2 % positive to ALB-PE, 75.4 % positive to HNF4α-PE, and 77.3% positive to AFP-PE. Further, the qRT-PCR and western blot analysis presented prominent expression of hepatocyte-specific genes AAT, ALB, AFP, CK18, CK19, HNF4α, TFR2, and Hepcidin confirms the generation of hepatocytes in HDM. The ability of albumin secretion, urea production, glycogen storage, uptake of LDL, high ALDH enzyme activity describes the functionality of differentiated hepatocytes. Distinct expression of UGT1A1, CYP2B6, CYP2C9, CYP3A4, and CYP7A1 genes explains the ability to clear toxins and bilirubin as observed in normal hepatocytes. All these results indicate HSCs were differentiated into hepatocytes thus, autologous transplantation of HSCs could be a better option in the regeneration of the damaged liver.
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Affiliation(s)
- Pasupuleti Santhosh Kumar
- Department of Biotechnology, Sri Venkateswara Institute of Medical Sciences, Tirupati, 517507, Andhra Pradesh, India
| | - Chodimella Chandrasekhar
- Department of Hematology, Sri Venkateswara Institute of Medical Sciences, Tirupati, 517507, Andhra Pradesh, India
| | - Lokanathan Srikanth
- Department of Biotechnology, Sri Venkateswara Institute of Medical Sciences, Tirupati, 517507, Andhra Pradesh, India
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Generation of qualified clinical-grade functional hepatocytes from human embryonic stem cells in chemically defined conditions. Cell Death Dis 2019; 10:763. [PMID: 31601782 PMCID: PMC6787193 DOI: 10.1038/s41419-019-1967-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/10/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022]
Abstract
Hepatocytes have been successfully generated from human pluripotent stem cells (hPSCs). However, the cost-effective and clinical-grade generation of hepatocytes from hPSCs still need to be improved. In this study, we reported the production of functional hepatocytes from clinical-grade human embryonic stem cells (hESCs) under good manufacturing practice (GMP) requirements. We sequentially generated primitive streak (PS), definitive endoderm (DE), hepatoblasts and hepatocyte-like cells (HLCs) from hESCs in the different stages with completely defined reagents. During hepatoblast differentiation, dimethyl sulfoxide (DMSO), transferrin, L-ascorbic acid 2-phosphate sesquimagnesium salt hydrate (Vc-Mg), insulin, and sodium selenite were used instead of cytokines and FBS/KOSR. Then, hepatoblasts were differentiated into HLCs that had a typical hepatocyte morphology and possessed characteristics of mature hepatocytes, such as metabolic-related gene expression, albumin secretion, fat accumulation, glycogen storage, and inducible cytochrome P450 activity in vitro. HLCs integrated into the livers of Tet-uPA Rag2–/– Il2rg–/– (URG) mice, which partially recovered after transplantation. Furthermore, a series of biosafety-related experiments were performed to ensure future clinical applications. In conclusion, we developed a chemically defined system to generate qualified clinical-grade HLCs from hESCs under GMP conditions. HLCs have been proven to be safe and effective for treating liver failure. This efficient platform could facilitate the treatment of liver diseases using hESC-derived HLCs transplantation.
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Ramme AP, Koenig L, Hasenberg T, Schwenk C, Magauer C, Faust D, Lorenz AK, Krebs AC, Drewell C, Schirrmann K, Vladetic A, Lin GC, Pabinger S, Neuhaus W, Bois F, Lauster R, Marx U, Dehne EM. Autologous induced pluripotent stem cell-derived four-organ-chip. Future Sci OA 2019; 5:FSO413. [PMID: 31534781 PMCID: PMC6745596 DOI: 10.2144/fsoa-2019-0065] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 07/16/2019] [Indexed: 12/22/2022] Open
Abstract
Microphysiological systems play a pivotal role in progressing toward a global paradigm shift in drug development. Here, we designed a four-organ-chip interconnecting miniaturized human intestine, liver, brain and kidney equivalents. All four organ models were predifferentiated from induced pluripotent stem cells from the same healthy donor and integrated into the microphysiological system. The coculture of the four autologous tissue models in one common medium deprived of tissue specific growth factors was successful over 14-days. Although there were no added growth factors present in the coculture medium, the intestine, liver and neuronal model maintained defined marker expression. Only the renal model was overgrown by coexisting cells and did not further differentiate. This model platform will pave the way for autologous coculture cross-talk assays, disease induction and subsequent drug testing.
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Affiliation(s)
| | - Leopold Koenig
- TissUse GmbH, Oudenarder Str. 16, 13347 Berlin, Deutschland
| | | | | | | | - Daniel Faust
- TissUse GmbH, Oudenarder Str. 16, 13347 Berlin, Deutschland
| | | | | | - Christopher Drewell
- Technische Universität Berlin, Medizinische Biotechnologie, Gustav-Meyer-Allee 25, 13355 Berlin, Deutschland
| | - Kerstin Schirrmann
- The University of Manchester, Physics of Fluids & Soft Matter Group, Oxford Road, Manchester M13 9PL, UK
| | - Alexandra Vladetic
- AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria
| | - Grace-Chiaen Lin
- AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria
| | - Stephan Pabinger
- AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria
| | - Winfried Neuhaus
- AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria
| | - Frederic Bois
- INERIS, METO unit, Parc ALATA BP2, 60550 Verneuil en Halatte, France
| | - Roland Lauster
- Technische Universität Berlin, Medizinische Biotechnologie, Gustav-Meyer-Allee 25, 13355 Berlin, Deutschland
| | - Uwe Marx
- TissUse GmbH, Oudenarder Str. 16, 13347 Berlin, Deutschland
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Liver biopsy derived induced pluripotent stem cells provide unlimited supply for the generation of hepatocyte-like cells. PLoS One 2019; 14:e0221762. [PMID: 31465481 PMCID: PMC6715171 DOI: 10.1371/journal.pone.0221762] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 08/14/2019] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND & AIMS Hepatocyte-like cells (HLCs) differentiated from induced pluripotent stem cells (iPSCs) have emerged as a promising cell culture model to study metabolism, biotransformation, viral infections and inherited liver diseases. iPSCs provide an unlimited supply for the generation of HLCs, but incomplete HLC differentiation remains a major challenge. iPSC may carry-on a tissue of origin dependent expression memory influencing iPSC differentiation into different cell types. Whether liver derived iPSCs (Li-iPSCs) would allow the generation of more fully differentiated HLCs is not known. METHODS In the current study, we used primary liver cells (PLCs) expanded from liver needle biopsies and reprogrammed them into Li-iPSCs using a non-integrative Sendai virus-based system. Li-iPSCs were differentiated into HLCs using established differentiation protocols. The HLC phenotype was characterized at the protein, functional and transcriptional level. RNA sequencing data were generated from the originating liver biopsies, the Li-iPSCs, fibroblast derived iPSCs, and differentiated HLCs, and used to characterize and compare their transcriptome profiles. RESULTS Li-iPSCs indeed retain a liver specific transcriptional footprint. Li-iPSCs can be propagated to provide an unlimited supply of cells for differentiation into Li-HLCs. Similar to HLCs derived from fibroblasts, Li-HLCs could not be fully differentiated into hepatocytes. Relative to the originating liver, Li-HLCs showed lower expression of liver specific transcription factors and increased expression of genes involved in the differentiation of other tissues. CONCLUSIONS PLCs and Li-iPSCs obtained from small pieces of human needle liver biopsies constitute a novel unlimited source for the production of HLCs. Despite the preservation of a liver specific gene expression footprint in Li-iPSCs, the generation of fully differentiated hepatocytes cannot be achieved with the current differentiation protocols.
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Czekaj P, Król M, Limanówka Ł, Michalik M, Lorek K, Gramignoli R. Assessment of animal experimental models of toxic liver injury in the context of their potential application as preclinical models for cell therapy. Eur J Pharmacol 2019; 861:172597. [PMID: 31408648 DOI: 10.1016/j.ejphar.2019.172597] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 08/04/2019] [Accepted: 08/08/2019] [Indexed: 02/06/2023]
Abstract
Preclinical animal models allow to study development and progression of several diseases, including liver disorders. These studies, for ethical reasons and medical limits, are impossible to carry out in human patients. At the same time, such experimental models constitute an important source of knowledge on pathomechanisms for drug- and virus-induced hepatotoxicity, both acute and chronic. Carbon tetrachloride, D-Galactosamine, and retrorsine are xenobiotics that can be used in immunocompetent animal models of hepatotoxicity, where chemical-intoxicated livers present histological features representative of human viruses-related infection. A prolonged derangement into liver architecture and functions commonly lead to cirrhosis, eventually resulting in hepatocellular carcinoma. In human, orthotopic liver transplantation commonly resolve most the problems related to cirrhosis. However, the shortage of donors does not allow all the patients in the waiting list to receive an organ on time. A promising alternative treatment for acute and chronic liver disease has been advised in liver cell transplantation, but the limited availability of hepatocytes for clinical approaches, in addition to the immunosuppressant regiment required to sustain cellular long-term engraftment have been encouraging the use of alternative cell sources. A recent effective source of stem cells have been recently identified in the human amnion membrane. Human amnion epithelial cells (hAEC) have been preclinically tested and proven sufficient to rescue immunocompetent rodents lethally intoxicated with drugs. The adoption of therapeutic procedures based on hAEC transplant in immunocompetent recipients affected by liver diseases, as well as patients with immune-related disorders, may constitute a successful new alternative therapy in regenerative medicine.
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Affiliation(s)
- Piotr Czekaj
- Department of Cytophysiology, Chair of Histology and Embryology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland, Medyków 18 str., 40-752, Katowice, Poland.
| | - Mateusz Król
- Students Scientific Society, Department of Cytophysiology, Chair of Histology and Embryology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland, Medyków 18 str., 40-752, Katowice, Poland.
| | - Łukasz Limanówka
- Students Scientific Society, Department of Cytophysiology, Chair of Histology and Embryology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland, Medyków 18 str., 40-752, Katowice, Poland
| | - Marcin Michalik
- Students Scientific Society, Department of Cytophysiology, Chair of Histology and Embryology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland, Medyków 18 str., 40-752, Katowice, Poland
| | - Katarzyna Lorek
- Students Scientific Society, Department of Cytophysiology, Chair of Histology and Embryology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland, Medyków 18 str., 40-752, Katowice, Poland
| | - Roberto Gramignoli
- Department of Laboratory Medicine (LABMED), H5, Division of Pathology, Karolinska Institutet, Alfred Nobels Allé 8, 14152, Huddinge, Sweden.
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Godoy P, Schmidt-Heck W, Hellwig B, Nell P, Feuerborn D, Rahnenführer J, Kattler K, Walter J, Blüthgen N, Hengstler JG. Assessment of stem cell differentiation based on genome-wide expression profiles. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2017.0221. [PMID: 29786556 DOI: 10.1098/rstb.2017.0221] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2018] [Indexed: 12/24/2022] Open
Abstract
In recent years, protocols have been established to differentiate stem and precursor cells into more mature cell types. However, progress in this field has been hampered by difficulties to assess the differentiation status of stem cell-derived cells in an unbiased manner. Here, we present an analysis pipeline based on published data and methods to quantify the degree of differentiation and to identify transcriptional control factors explaining differences from the intended target cells or tissues. The pipeline requires RNA-Seq or gene array data of the stem cell starting population, derived 'mature' cells and primary target cells or tissue. It consists of a principal component analysis to represent global expression changes and to identify possible problems of the dataset that require special attention, such as: batch effects; clustering techniques to identify gene groups with similar features; over-representation analysis to characterize biological motifs and transcriptional control factors of the identified gene clusters; and metagenes as well as gene regulatory networks for quantitative cell-type assessment and identification of influential transcription factors. Possibilities and limitations of the analysis pipeline are illustrated using the example of human embryonic stem cell and human induced pluripotent cells to generate 'hepatocyte-like cells'. The pipeline quantifies the degree of incomplete differentiation as well as remaining stemness and identifies unwanted features, such as colon- and fibroblast-associated gene clusters that are absent in real hepatocytes but typically induced by currently available differentiation protocols. Finally, transcription factors responsible for incomplete and unwanted differentiation are identified. The proposed method is widely applicable and allows an unbiased and quantitative assessment of stem cell-derived cells.This article is part of the theme issue 'Designer human tissue: coming to a lab near you'.
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Affiliation(s)
- Patricio Godoy
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | - Wolfgang Schmidt-Heck
- Leibniz Institute for Natural Product Research and Infection Biology eV-Hans-Knöll Institute, Jena, Germany
| | - Birte Hellwig
- Department of Statistics, TU Dortmund University, Dortmund, Germany
| | - Patrick Nell
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | - David Feuerborn
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | | | - Kathrin Kattler
- Department of Genetics, University of Saarland, Saarbrücken 66123, Germany
| | - Jörn Walter
- Institute of Pathology, Charité Universitätsmedizin, 10117 Berlin, Germany
| | - Nils Blüthgen
- Institute of Pathology, Charité Universitätsmedizin, 10117 Berlin, Germany.,Integrative Research Institute for the Life Sciences, Institute for Theoretical Biology, Humboldt Universität, 10115 Berlin, Germany
| | - Jan G Hengstler
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
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13
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Donato MT, Tolosa L. Stem-cell derived hepatocyte-like cells for the assessment of drug-induced liver injury. Differentiation 2019; 106:15-22. [PMID: 30844688 DOI: 10.1016/j.diff.2019.02.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/30/2019] [Accepted: 02/14/2019] [Indexed: 12/26/2022]
Abstract
Drug-induced liver injury is a major cause of drug discovery failure in clinical trials and a leading cause of liver disease. Current preclinical drug testing does not predict hepatotoxicity which highlights the importance of developing highly predictive cell-based models. The use of stem cell technology and differentiation into hepatocyte-like cells (HLCs) could provide a stable source of hepatocytes for multiple applications, including drug screening. HLCs derived from both embryonic and induced pluripotent stem cells have been used to accurately predict hepatotoxicity as well as to test individual-specific toxicity. Although there are still many limitations, mainly related to the lack of fully maturity of the HLCs derived from pluripotent stem cells, they could provide a relative unlimited and consistent supply of cells with stable phenotype, that could be obtained from different donors, enabling the generation of a library of HLCs representative of the variability of human population.
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Affiliation(s)
- M Teresa Donato
- Unidad de Hepatología Experimental, Instituto de Investigación Sanitaria La Fe, Valencia, 46026, Spain; Departamento de Bioquímica y Biología Molecular, Facultad de Medicina y Odontología, Universidad de Valencia, Valencia, 46010, Spain.
| | - Laia Tolosa
- Unidad de Hepatología Experimental, Instituto de Investigación Sanitaria La Fe, Valencia, 46026, Spain
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14
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Ooi J, Langley SR, Xu X, Utami KH, Sim B, Huang Y, Harmston NP, Tay YL, Ziaei A, Zeng R, Low D, Aminkeng F, Sobota RM, Ginhoux F, Petretto E, Pouladi MA. Unbiased Profiling of Isogenic Huntington Disease hPSC-Derived CNS and Peripheral Cells Reveals Strong Cell-Type Specificity of CAG Length Effects. Cell Rep 2019; 26:2494-2508.e7. [DOI: 10.1016/j.celrep.2019.02.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 12/17/2018] [Accepted: 02/01/2019] [Indexed: 02/02/2023] Open
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15
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Matoba N, Yamashita T, Takayama K, Sakurai F, Mizuguchi H. Optimal human iPS cell culture method for efficient hepatic differentiation. Differentiation 2018; 104:13-21. [PMID: 30273675 DOI: 10.1016/j.diff.2018.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 09/12/2018] [Accepted: 09/24/2018] [Indexed: 01/20/2023]
Abstract
Hepatocyte-like cells differentiated from human iPS cells are expected to be utilized in pharmaceutical research and regenerative medicine. Recently, various culture methods for human iPS cell maintenance have been developed. However, it is not well known whether human iPS cell maintenance method affects hepatic differentiation potency. In this study, we cultured human iPS cells using four maintenance methods: ReproStem medium with feeder cells (mouse embryonic fibroblasts), AK02N medium with iMatrix-511 (E8 fragments of laminin511), Essential 8 medium with Vitronectin N (N-terminal domain of vitronectin), TeSR-E8 medium with Vitronectin XF (xeno-free vitronectin). Then, these human iPS cells were differentiated into the hepatocyte-like cells. Interestingly, the gene expression levels of definitive endoderm markers in the definitive endoderm cells generated from human iPS cells cultured with ReproStem or TeSR-E8 medium were higher than those in other groups. The gene expression level of foregut marker, HHEX, in the definitive endoderm cells generated from human iPS cells cultured with ReproStem medium was higher than that in other groups. Consistently, the expression levels of hepatocyte markers, albumin and urea secretion capacity, and CYP3A4 activity in the hepatocyte-like cells generated from human iPS cells cultured with ReproStem medium were higher than those in the other groups. Our data indicated that the most suitable human iPS cell maintenance method for efficient hepatic differentiation was the on-feeder method which uses mouse embryonic fibroblasts, but not feeder-free methods. In conclusion, human iPS cell maintenance method largely affects hepatic differentiation potency.
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Affiliation(s)
- Nobumasa Matoba
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan.
| | - Tomoki Yamashita
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan.
| | - Kazuo Takayama
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan; PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Japan; Laboratory of Hepatocyte Regulation, National Institute of Biomedical Innovation, Health and Nutrition, Osaka 567-0085, Japan.
| | - Fuminori Sakurai
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan.
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan; Laboratory of Hepatocyte Regulation, National Institute of Biomedical Innovation, Health and Nutrition, Osaka 567-0085, Japan; Global Center for Medical Engineering and Informatics, Osaka University, Osaka 565-0871, Japan.
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16
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Schmidt S, Lilienkampf A, Bradley M. New substrates for stem cell control. Philos Trans R Soc Lond B Biol Sci 2018; 373:20170223. [PMID: 29786558 PMCID: PMC5974446 DOI: 10.1098/rstb.2017.0223] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2018] [Indexed: 12/16/2022] Open
Abstract
The capacity to culture stem cells in a controllable, robust and scalable manner is necessary in order to develop successful strategies for the generation of cellular and tissue platforms for drug screening, toxicity testing, tissue engineering and regenerative medicine. Creating substrates that support the expansion, maintenance or directional differentiation of stem cells would greatly aid these efforts. Optimally, the substrates used should be chemically defined and synthetically scalable, allowing growth under defined, serum-free culture conditions. To achieve this, the chemical and physical attributes of the substrates should mimic the natural tissue environment and allow control of their biological properties. Herein, recent advances in the development of materials to study/manipulate stem cells, both in vitro and in vivo, are described with a focus on the novelty of the substrates' properties, and on application of substrates to direct stem cells.This article is part of the theme issue 'Designer human tissue: coming to a lab near you'.
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Affiliation(s)
- Sara Schmidt
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK
| | - Annamaria Lilienkampf
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK
| | - Mark Bradley
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, UK
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17
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Lyall MJ, Cartier J, Thomson JP, Cameron K, Meseguer-Ripolles J, O'Duibhir E, Szkolnicka D, Villarin BL, Wang Y, Blanco GR, Dunn WB, Meehan RR, Hay DC, Drake AJ. Modelling non-alcoholic fatty liver disease in human hepatocyte-like cells. Philos Trans R Soc Lond B Biol Sci 2018; 373:rstb.2017.0362. [PMID: 29786565 PMCID: PMC5974453 DOI: 10.1098/rstb.2017.0362] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2018] [Indexed: 12/21/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common cause of liver disease in developed countries. An in vitro NAFLD model would permit mechanistic studies and enable high-throughput therapeutic screening. While hepatic cancer-derived cell lines are a convenient, renewable resource, their genomic, epigenomic and functional alterations mean their utility in NAFLD modelling is unclear. Additionally, the epigenetic mark 5-hydroxymethylcytosine (5hmC), a cell lineage identifier, is rapidly lost during cell culture, alongside expression of the Ten-eleven-translocation (TET) methylcytosine dioxygenase enzymes, restricting meaningful epigenetic analysis. Hepatocyte-like cells (HLCs) derived from human embryonic stem cells can provide a non-neoplastic, renewable model for liver research. Here, we have developed a model of NAFLD using HLCs exposed to lactate, pyruvate and octanoic acid (LPO) that bear all the hallmarks, including 5hmC profiles, of liver functionality. We exposed HLCs to LPO for 48 h to induce lipid accumulation. We characterized the transcriptome using RNA-seq, the metabolome using ultra-performance liquid chromatography-mass spectrometry and the epigenome using 5-hydroxymethylation DNA immunoprecipitation (hmeDIP) sequencing. LPO exposure induced an NAFLD phenotype in HLCs with transcriptional and metabolomic dysregulation consistent with those present in human NAFLD. HLCs maintain expression of the TET enzymes and have a liver-like epigenome. LPO exposure-induced 5hmC enrichment at lipid synthesis and transport genes. HLCs treated with LPO recapitulate the transcriptional and metabolic dysregulation seen in NAFLD and additionally retain TET expression and 5hmC. This in vitro model of NAFLD will be useful for future mechanistic and therapeutic studies.This article is part of the theme issue 'Designer human tissue: coming to a lab near you'.
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Affiliation(s)
- Marcus J Lyall
- University/British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - Jessy Cartier
- University/British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - John P Thomson
- MRC Human Genetics Unit, IGMM, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Kate Cameron
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | | | - Eoghan O'Duibhir
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Dagmara Szkolnicka
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | | | - Yu Wang
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Giovanny Rodriguez Blanco
- Phenome Centre Birmingham, School of Biosciences and Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Warwick B Dunn
- Phenome Centre Birmingham, School of Biosciences and Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Richard R Meehan
- MRC Human Genetics Unit, IGMM, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - David C Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Amanda J Drake
- University/British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
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18
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Lorvellec M, Scottoni F, Crowley C, Fiadeiro R, Maghsoudlou P, Pellegata AF, Mazzacuva F, Gjinovci A, Lyne AM, Zulini J, Little D, Mosaku O, Kelly D, De Coppi P, Gissen P. Mouse decellularised liver scaffold improves human embryonic and induced pluripotent stem cells differentiation into hepatocyte-like cells. PLoS One 2017; 12:e0189586. [PMID: 29261712 PMCID: PMC5738056 DOI: 10.1371/journal.pone.0189586] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/28/2017] [Indexed: 01/23/2023] Open
Abstract
Liver transplantation is the definitive treatment of liver failure but donor organ shortage limits its availability. Stem cells are highly expandable and have the potential to differentiate into any specialist cell. Use of patient-derived induced Pluripotent Stem Cells (hiPSCs) has the additional advantage for organ regeneration therapies by removing the need for immunosuppression. We compared hepatocyte differentiation of human embryonic stem cells (hESCs) and hiPSCs in a mouse decellularised liver scaffold (3D) with standard in vitro protocol (2D). Mouse livers were decellularised preserving micro-architecture, blood vessel network and extracellular matrix. hESCs and hiPSCs were primed towards the definitive endoderm. Cells were then seeded either in 3D or 2D cultures and the hepatocyte differentiation was continued. Both hESCs and hiPSCs differentiated more efficiently in 3D than in 2D, with higher and earlier expression of mature hepatocyte marker albumin, lipid and glycogen synthesis associated with a decrease in expression of fetal hepatocyte marker alpha-fetoprotein. Thus we conclude that stem cell hepatocyte differentiation in 3D culture promotes faster cell maturation. This finding suggests that optimised 3D protocols could allow generation of mature liver cells not achieved so far in standard 2D conditions and lead to improvement in cell models of liver disease and regenerative medicine applications.
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Affiliation(s)
- Maëlle Lorvellec
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
- * E-mail:
| | - Federico Scottoni
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | - Claire Crowley
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | - Rebeca Fiadeiro
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | - Panagiotis Maghsoudlou
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | - Alessandro Filippo Pellegata
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | - Francesca Mazzacuva
- Centre for General Omics, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | - Asllan Gjinovci
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | | | - Justine Zulini
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
| | - Daniel Little
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
| | - Olukunbi Mosaku
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
| | - Deirdre Kelly
- The Liver Unit, Birmingham Children’s Hospital, Birmingham, United Kingdom
| | - Paolo De Coppi
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
| | - Paul Gissen
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
- Department of Stem Cells and Regenerative Medicine, Institute of Child Health and Great Ormond Street Hospital, University College London, London, United Kingdom
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19
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Gao Y, Zhang X, Zhang L, Cen J, Ni X, Liao X, Yang C, Li Y, Chen X, Zhang Z, Shu Y, Cheng X, Hay DC, Lai D, Pan G, Wei G, Hui L. Distinct Gene Expression and Epigenetic Signatures in Hepatocyte-like Cells Produced by Different Strategies from the Same Donor. Stem Cell Reports 2017; 9:1813-1824. [PMID: 29173899 PMCID: PMC5785700 DOI: 10.1016/j.stemcr.2017.10.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 10/22/2017] [Accepted: 10/23/2017] [Indexed: 02/07/2023] Open
Abstract
Hepatocyte-like cells (HLCs) can be generated through directed differentiation or transdifferentiation. Employing two strategies, we generated induced pluripotent stem cell (iPSC)-HLCs and hiHeps from the same donor cell line. Both types of HLCs clustered distinctly from each other during gene expression profiling. In particular, differences existed in gene expression for phase II drug metabolism and lipid accumulation, underpinned by H3K27 acetylation status in iPSC-HLCs and hiHeps. While distinct phenotypes were achieved in vitro, both types of HLCs demonstrated similar phenotypes following transplantation into Fah-deficient mice. In conclusion, functional HLCs can be obtained from the same donor using two strategies. Global gene expression defined the differences between those populations in vitro. Importantly, both HLCs displayed partial but markedly improved hepatic function following transplantation in vivo, demonstrating plasticity and the potential for cell-based modeling in the dish and cell-based therapy in the future. hiHeps and iPSC-HLCs from the same donor are compared hiHeps and iPSC-HLCs show distinct expression patterns and hepatic functions Different expressions in hiHeps and iPSC-HLCs are partially attributed to H3K27ac Both HLCs are further matured in the in vivo microenvironment of livers
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Affiliation(s)
- Yimeng Gao
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaoran Zhang
- CAS Key Laboratory of Computational Biology, Collaborative Innovation Center for Genetics and Developmental Biology, CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ludi Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Jin Cen
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xuan Ni
- Center for Drug Safety Evaluation and Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Xiaoying Liao
- Center for Drug Safety Evaluation and Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Chenxi Yang
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ying Li
- CAS Key Laboratory of Computational Biology, Collaborative Innovation Center for Genetics and Developmental Biology, CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaotao Chen
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Zhao Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Yajing Shu
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xin Cheng
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - David C Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Dongmei Lai
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200030, China
| | - Guoyu Pan
- Center for Drug Safety Evaluation and Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Gang Wei
- CAS Key Laboratory of Computational Biology, Collaborative Innovation Center for Genetics and Developmental Biology, CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
| | - Lijian Hui
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China.
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20
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Bierwolf J, Volz T, Lütgehetmann M, Allweiss L, Riecken K, Warlich M, Fehse B, Kalff JC, Dandri M, Pollok JM. Primary Human Hepatocytes Repopulate Livers of Mice After In Vitro Culturing and Lentiviral-Mediated Gene Transfer. Tissue Eng Part A 2017; 22:742-53. [PMID: 27068494 PMCID: PMC4876526 DOI: 10.1089/ten.tea.2015.0427] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Cell-based therapies represent a promising alternative to orthotopic liver transplantation. However, therapeutic effects are limited by low cell engraftment rates. We recently introduced a technique creating human hepatocyte spheroids for potential therapeutic application. The aim of this study was to evaluate whether these spheroids are suitable for engraftment in diseased liver tissues. Intrasplenic spheroid transplantation into immunodeficient uPA/SCID/beige mice was performed. Hepatocyte transduction ability prior to transplantation was tested by lentiviral labeling using red-green-blue (RGB) marking. Eight weeks after transplantation, animals were sacrificed and livers were analyzed by immunohistochemistry and immunofluorescence. To investigate human hepatocyte-specific gene expression profiles in mice, quantitative real-time-PCR was applied. Human albumin and alpha-1-antitrypsin concentrations in mouse serum were quantified to assess the levels of human chimerism. Precultured human hepatocytes reestablished their physiological liver tissue architecture and function upon transplantation in mice. Positive immunohistochemical labeling of the proliferating cell nuclear antigen revealed that human hepatocytes retained their in vivo proliferation capacity. Expression profiles of human genes analyzed in chimeric mouse livers resembled levels determined in native human tissue. Extensive vascularization of human cell clusters was detected by demonstration of von Willebrand factor activity. To model gene therapy approaches, lentiviral transduction was performed ex vivo and fluorescent microscopic imaging revealed maintenance of RGB marking in vivo. Altogether, this is the first report demonstrating that cultured and retroviral transduced human hepatocyte spheroids are able to engraft and maintain their regenerative potential in vivo.
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Affiliation(s)
- Jeanette Bierwolf
- 1 Department for General, Visceral, Thoracic, and Vascular Surgery, University Medical Center Bonn , Bonn, Germany
| | - Tassilo Volz
- 2 Department of Internal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg, Germany
| | - Marc Lütgehetmann
- 2 Department of Internal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg, Germany .,3 Department of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf , Hamburg, Germany
| | - Lena Allweiss
- 2 Department of Internal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg, Germany
| | - Kristoffer Riecken
- 4 Department of Stem Cell Transplantation, Research Department Cell and Gene Therapy, University Medical Center Hamburg-Eppendorf , Hamburg, Germany
| | - Michael Warlich
- 2 Department of Internal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg, Germany
| | - Boris Fehse
- 4 Department of Stem Cell Transplantation, Research Department Cell and Gene Therapy, University Medical Center Hamburg-Eppendorf , Hamburg, Germany
| | - Joerg C Kalff
- 1 Department for General, Visceral, Thoracic, and Vascular Surgery, University Medical Center Bonn , Bonn, Germany
| | - Maura Dandri
- 2 Department of Internal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg, Germany .,5 German Center for Infection Research , Hamburg-Lübeck-Borstel Partner Site, Hamburg, Germany
| | - Joerg-Matthias Pollok
- 1 Department for General, Visceral, Thoracic, and Vascular Surgery, University Medical Center Bonn , Bonn, Germany
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21
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Meier F, Freyer N, Brzeszczynska J, Knöspel F, Armstrong L, Lako M, Greuel S, Damm G, Ludwig-Schwellinger E, Deschl U, Ross JA, Beilmann M, Zeilinger K. Hepatic differentiation of human iPSCs in different 3D models: A comparative study. Int J Mol Med 2017; 40:1759-1771. [PMID: 29039463 PMCID: PMC5716452 DOI: 10.3892/ijmm.2017.3190] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 09/08/2017] [Indexed: 02/06/2023] Open
Abstract
Human induced pluripotent stem cells (hiPSCs) are a promising source from which to derive distinct somatic cell types for in vitro or clinical use. Existent protocols for hepatic differentiation of hiPSCs are primarily based on 2D cultivation of the cells. In the present study, the authors investigated the generation of hiPSC-derived hepatocyte-like cells using two different 3D culture systems: A 3D scaffold-free microspheroid culture system and a 3D hollow-fiber perfusion bioreactor. The differentiation outcome in these 3D systems was compared with that in conventional 2D cultures, using primary human hepatocytes as a control. The evaluation was made based on specific mRNA expression, protein secretion, antigen expression and metabolic activity. The expression of α-fetoprotein was lower, while cytochrome P450 1A2 or 3A4 activities were higher in the 3D culture systems as compared with the 2D differentiation system. Cells differentiated in the 3D bioreactor showed an increased expression of albumin and hepatocyte nuclear factor 4α, as well as secretion of α-1-antitrypsin as compared with the 2D differentiation system, suggesting a higher degree of maturation. In contrast, the 3D scaffold-free microspheroid culture provides an easy and robust method to generate spheroids of a defined size for screening applications, while the bioreactor culture model provides an instrument for complex investigations under physiological-like conditions. In conclusion, the present study introduces two 3D culture systems for stem cell derived hepatic differentiation each demonstrating advantages for individual applications as well as benefits in comparison with 2D cultures.
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Affiliation(s)
- Florian Meier
- Boehringer Ingelheim Pharma GmbH and Co.KG, Nonclinical Drug Safety Germany, D-88397 Biberach an der Riss, Germany
| | - Nora Freyer
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Campus Virchow-Klinikum, D-13353 Berlin, Germany
| | - Joanna Brzeszczynska
- Tissue Injury and Repair Group, Chancellor's Building, Edinburgh Medical School, University of Edinburgh, EH164SB Edinburgh, UK
| | - Fanny Knöspel
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Campus Virchow-Klinikum, D-13353 Berlin, Germany
| | - Lyle Armstrong
- Institute of Genetic Medicine, University of Newcastle upon Tyne, NE13BZ Newcastle upon Tyne, UK
| | - Majlinda Lako
- Institute of Genetic Medicine, University of Newcastle upon Tyne, NE13BZ Newcastle upon Tyne, UK
| | - Selina Greuel
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Campus Virchow-Klinikum, D-13353 Berlin, Germany
| | - Georg Damm
- Department of Hepatobiliary Surgery and Visceral Transplantation, University of Leipzig, D-04103 Leipzig, Germany
| | - Eva Ludwig-Schwellinger
- Boehringer Ingelheim Pharma GmbH and Co.KG, Drug Metabolism and Pharmacokinetics Germany, D-88397 Biberach an der Riss, Germany
| | - Ulrich Deschl
- Boehringer Ingelheim Pharma GmbH and Co.KG, Nonclinical Drug Safety Germany, D-88397 Biberach an der Riss, Germany
| | - James A Ross
- Tissue Injury and Repair Group, Chancellor's Building, Edinburgh Medical School, University of Edinburgh, EH164SB Edinburgh, UK
| | - Mario Beilmann
- Boehringer Ingelheim Pharma GmbH and Co.KG, Nonclinical Drug Safety Germany, D-88397 Biberach an der Riss, Germany
| | - Katrin Zeilinger
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Campus Virchow-Klinikum, D-13353 Berlin, Germany
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22
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Grant R, Hay DC, Callanan A. A Drug-Induced Hybrid Electrospun Poly-Capro-Lactone: Cell-Derived Extracellular Matrix Scaffold for Liver Tissue Engineering. Tissue Eng Part A 2017; 23:650-662. [PMID: 28437180 DOI: 10.1089/ten.tea.2016.0419] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Liver transplant is the only treatment option for patients with end-stage liver failure, however, there are too few donor livers available for transplant. Whole organ tissue engineering presents a potential solution to the problem of rapidly escalating donor liver shortages worldwide. A major challenge for liver tissue engineers is the creation of a hepatocyte microenvironment; a niche in which liver cells can survive and function optimally. While polymers and decellularized tissues pose an attractive option for scaffold manufacturing, neither alone has thus far proved sufficient. This study exploited cell's native extracellular matrix (ECM) producing capabilities using two different histone deacetylase inhibitors, and combined these with the customizability and reproducibility of electrospun polymer scaffolds to produce a "best of both worlds" niche microenvironment for hepatocytes. The resulting hybrid poly-capro-lactone (PCL)-ECM scaffolds were validated using HepG2 hepatocytes. The hybrid PCL-ECM scaffolds maintained hepatocyte growth and function, as evidenced by metabolic activity and DNA quantitation. Mechanical testing revealed little significant difference between scaffolds, indicating that cells were responding to a biochemical and topographical profile rather than mechanical changes. Immunohistochemistry showed that the biochemical profile of the drug-derived and nondrug-derived ECMs differed in ratio of Collagen I, Laminin, and Fibronectin. Furthermore, the hybrid PCL-ECM scaffolds influence the gene expression profile of the HepG2s drastically; with expression of Albumin, Cytochrome P450 Family 1 Subfamily A Polypeptide 1, Cytochrome P450 Family 1 Subfamily A Polypeptide 2, Cytochrome P450 Family 3 Subfamily A Polypeptide 4, Fibronectin, Collagen I, and Collagen IV undergoing significant changes. Our results demonstrate that drug-induced hybrid PCL-ECM scaffolds provide a viable, translatable platform for creating a niche microenvironment for hepatocytes, supporting in vivo phenotype and function. These scaffolds offer great potential for tissue engineering and regenerative medicine strategies for whole organ tissue engineering.
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Affiliation(s)
- Rhiannon Grant
- 1 Institute for Bioengineering, School of Engineering, University of Edinburgh , Edinburgh, United Kingdom
| | - David C Hay
- 2 MRC Scottish Centre for Regenerative Medicine, University of Edinburgh , Edinburgh, United Kingdom
| | - Anthony Callanan
- 1 Institute for Bioengineering, School of Engineering, University of Edinburgh , Edinburgh, United Kingdom
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23
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Lin H, Li Q, Lei Y. Three-dimensional tissues using human pluripotent stem cell spheroids as biofabrication building blocks. Biofabrication 2017; 9:025007. [PMID: 28287080 DOI: 10.1088/1758-5090/aa663b] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A recently emerged approach for tissue engineering is to biofabricate tissues using cellular spheroids as building blocks. Human pluripotent stem cells (hPSCs), including human embryonic stem cells (hESCs) and induced pluripotent stem cells (iPSCs), can be cultured to generate large numbers of cells and can presumably be differentiated into all the cell types of the human body in vitro, thus are an ideal cell source for biofabrication. We previously developed a hydrogel-based cell culture system that can economically produce large numbers of hPSC spheroids. With hPSCs and this culture system, there are two potential methods to biofabricate a desired tissue. In Method 1, hPSC spheroids are first utilized to biofabricate an hPSC tissue that is subsequently differentiated into the desired tissue. In Method 2, hPSC spheroids are first converted into tissue spheroids in the hydrogel-based culture system and the tissue spheroids are then utilized to biofabricate the desired tissue. In this paper, we systematically measured the fusion rates of hPSC spheroids without and with differentiation toward cortical and midbrain dopaminergic neurons and found spheroids' fusion rates dropped sharply as differentiation progressed. We found Method 1 was appropriate for biofabricating neural tissues.
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Affiliation(s)
- Haishuang Lin
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, Nebraska, United States of America
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24
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Wang Y, Alhaque S, Cameron K, Meseguer-Ripolles J, Lucendo-Villarin B, Rashidi H, Hay DC. Defined and Scalable Generation of Hepatocyte-like Cells from Human Pluripotent Stem Cells. J Vis Exp 2017:55355. [PMID: 28287600 PMCID: PMC5409275 DOI: 10.3791/55355] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Human pluripotent stem cells (hPSCs) possess great value for biomedical research. hPSCs can be scaled and differentiated to all cell types found in the human body. The differentiation of hPSCs to human hepatocyte-like cells (HLCs) has been extensively studied, and efficient differentiation protocols have been established. The combination of extracellular matrix and biological stimuli, including growth factors, cytokines, and small molecules, have made it possible to generate HLCs that resemble primary human hepatocytes. However, the majority of procedures still employ undefined components, giving rise to batch-to-batch variation. This serves as a significant barrier to the application of the technology. To tackle this issue, we developed a defined system for hepatocyte differentiation using human recombinant laminins as extracellular matrices in combination with a serum-free differentiation process. Highly efficient hepatocyte specification was achieved, with demonstrated improvements in both HLC function and phenotype. Importantly, this system is easy to scale up using research and GMP-grade hPSC lines promising advances in cell-based modelling and therapies.
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Affiliation(s)
- Yu Wang
- MRC Centre for Regenerative Medicine, University of Edinburgh
| | - Sharmin Alhaque
- MRC Centre for Regenerative Medicine, University of Edinburgh
| | - Kate Cameron
- MRC Centre for Regenerative Medicine, University of Edinburgh
| | | | | | - Hassan Rashidi
- MRC Centre for Regenerative Medicine, University of Edinburgh
| | - David C Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh;
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25
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Abstract
Despite decades of basic research, biliary diseases remain prevalent, highly morbid, and notoriously difficult to treat. We have, however, dramatically increased our understanding of biliary developmental biology, cholangiocyte pathophysiology, and the endogenous mechanisms of biliary regeneration and repair. All of this complex and rapidly evolving knowledge coincides with an explosion of new technological advances in the area of regenerative medicine. New breakthroughs such as induced pluripotent stem cells and organoid culture are increasingly being applied to the biliary system; it is only a matter of time until new regenerative therapeutics for the cholangiopathies are unveiled. In this review, the authors integrate what is known about biliary development, regeneration, and repair, and link these conceptual advances to the technological breakthroughs that are collectively driving the emergence of a new global field in biliary regenerative medicine.
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Affiliation(s)
- Thiago M. De Assuncao
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Nidhi Jalan-Sakrikar
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Robert C. Huebert
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN,Center for Cell Signaling in Gastroenterology; Mayo Clinic and Foundation, Rochester, MN
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26
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Lin H, Li Q, Lei Y. An Integrated Miniature Bioprocessing for Personalized Human Induced Pluripotent Stem Cell Expansion and Differentiation into Neural Stem Cells. Sci Rep 2017; 7:40191. [PMID: 28057917 PMCID: PMC5216399 DOI: 10.1038/srep40191] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 12/01/2016] [Indexed: 01/01/2023] Open
Abstract
Human induced pluripotent stem cells (iPSCs) are ideal cell sources for personalized cell therapies since they can be expanded to generate large numbers of cells and differentiated into presumably all the cell types of the human body in vitro. In addition, patient specific iPSC-derived cells induce minimal or no immune response in vivo. However, with current cell culture technologies and bioprocessing, the cost for biomanufacturing clinical-grade patient specific iPSCs and their derivatives are very high and not affordable for majority of patients. In this paper, we explored the use of closed and miniature cell culture device for biomanufacturing patient specific neural stem cells (NSCs) from iPSCs. We demonstrated that, with the assist of a thermoreversible hydrogel scaffold, the bioprocessing including iPSC expansion, iPSC differentiation into NSCs, the subsequent depletion of undifferentiated iPSCs from the NSCs, and concentrating and transporting the purified NSCs to the surgery room, could be integrated and completed within two closed 15 ml conical tubes.
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Affiliation(s)
- Haishuang Lin
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, Nebraska, USA
| | - Qiang Li
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, Nebraska, USA
| | - Yuguo Lei
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, Nebraska, USA.,Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska, USA.,Fred &Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska, USA
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27
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Wu HM, Kim SG. miRNA-324, a potential therapeutic target for paracetamol-induced liver injury. Stem Cell Investig 2016; 3:67. [PMID: 27868049 DOI: 10.21037/sci.2016.10.04] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 10/12/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Hong Min Wu
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea
| | - Sang Geon Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea
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28
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Freyer N, Knöspel F, Strahl N, Amini L, Schrade P, Bachmann S, Damm G, Seehofer D, Jacobs F, Monshouwer M, Zeilinger K. Hepatic Differentiation of Human Induced Pluripotent Stem Cells in a Perfused Three-Dimensional Multicompartment Bioreactor. Biores Open Access 2016; 5:235-48. [PMID: 27610270 PMCID: PMC5003005 DOI: 10.1089/biores.2016.0027] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The hepatic differentiation of human induced pluripotent stem cells (hiPSC) holds great potential for application in regenerative medicine, pharmacological drug screening, and toxicity testing. However, full maturation of hiPSC into functional hepatocytes has not yet been achieved. In this study, we investigated the potential of a dynamic three-dimensional (3D) hollow fiber membrane bioreactor technology to improve the hepatic differentiation of hiPSC in comparison to static two-dimensional (2D) cultures. A total of 100 × 106 hiPSC were seeded into each 3D bioreactor (n = 3). Differentiation into definitive endoderm (DE) was induced by adding activin A, Wnt3a, and sodium butyrate to the culture medium. For further maturation, hepatocyte growth factor and oncostatin M were added. The same differentiation protocol was applied to hiPSC maintained in 2D cultures. Secretion of alpha-fetoprotein (AFP), a marker for DE, was significantly (p < 0.05) higher in 2D cultures, while secretion of albumin, a typical characteristic for mature hepatocytes, was higher after hepatic differentiation of hiPSC in 3D bioreactors. Functional analysis of multiple cytochrome P450 (CYP) isoenzymes showed activity of CYP1A2, CYP2B6, and CYP3A4 in both groups, although at a lower level compared to primary human hepatocytes (PHH). CYP2B6 activities were significantly (p < 0.05) higher in 3D bioreactors compared with 2D cultures, which is in line with results from gene expression. Immunofluorescence staining showed that the majority of cells was positive for albumin, cytokeratin 18 (CK18), and hepatocyte nuclear factor 4-alpha (HNF4A) at the end of the differentiation process. In addition, cytokeratin 19 (CK19) staining revealed the formation of bile duct-like structures in 3D bioreactors similar to native liver tissue. The results indicate a better maturation of hiPSC in the 3D bioreactor system compared to 2D cultures and emphasize the potential of dynamic 3D culture systems in stem cell differentiation approaches for improved formation of differentiated tissue structures.
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Affiliation(s)
- Nora Freyer
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Fanny Knöspel
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Nadja Strahl
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Leila Amini
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Petra Schrade
- Charité Centrum Grundlagenmedizin, Institut für Vegetative Anatomie, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Sebastian Bachmann
- Charité Centrum Grundlagenmedizin, Institut für Vegetative Anatomie, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Georg Damm
- Department of General-, Visceral- and Transplantation Surgery, Charité—Universitätsmedizin Berlin, Berlin, Germany
- Department of Hepatobiliary Surgery and Visceral Transplantation, University of Leipzig, Leipzig, Germany
| | - Daniel Seehofer
- Department of General-, Visceral- and Transplantation Surgery, Charité—Universitätsmedizin Berlin, Berlin, Germany
- Department of Hepatobiliary Surgery and Visceral Transplantation, University of Leipzig, Leipzig, Germany
| | - Frank Jacobs
- Janssen Research and Development, Beerse, Belgium
| | | | - Katrin Zeilinger
- Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité—Universitätsmedizin Berlin, Berlin, Germany
- Address correspondence to: Dr. med. vet. Katrin Zeilinger, Bioreactor Group, Berlin Brandenburg Center for Regenerative Therapies (BCRT), Charité—Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, Berlin 13353, Germany, E-mail:
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29
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Vanhove J, Pistoni M, Welters M, Eggermont K, Vanslembrouck V, Helsen N, Boon R, Najimi M, Sokal E, Collas P, Voncken JW, Verfaillie CM. H3K27me3 Does Not Orchestrate the Expression of Lineage-Specific Markers in hESC-Derived Hepatocytes In Vitro. Stem Cell Reports 2016; 7:192-206. [PMID: 27477635 PMCID: PMC4982990 DOI: 10.1016/j.stemcr.2016.06.013] [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: 07/19/2015] [Revised: 06/30/2016] [Accepted: 06/30/2016] [Indexed: 01/21/2023] Open
Abstract
Although pluripotent stem cells can be differentiated into the hepatocyte lineages, such cells retain an immature phenotype. As the chromatin state of regulatory regions controls spatiotemporal gene expression during development, we evaluated changes in epigenetic histone marks in lineage-specific genes throughout in vitro hepatocyte differentiation from human embryonic stem cells (hESCs). Active acetylation and methylation marks at promoters and enhancers correlated with progressive changes in gene expression. However, repression-associated H3K27me3 marks at these control regions showed an inverse correlation with gene repression during transition from hepatic endoderm to a hepatocyte-like state. Inhibitor of Enhancer of Zeste Homolog 2 (EZH2) reduced H3K27me3 decoration but did not improve hepatocyte maturation. Thus, H3K27me3 at regulatory regions does not regulate transcription and appears dispensable for hepatocyte lineage differentiation of hESCs in vitro. Epigenetic studies to understand hepatocyte differentiation from human PSC Dynamics in histone profile correlate with alterations in gene transcription hESC-derived HLCs have higher H3K27me3 mark at regulatory regions compared with PHHs Reducing H3K27me3 by EZH2 inhibition did not improve hepatocyte differentiation
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Affiliation(s)
- Jolien Vanhove
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium.
| | - Mariaelena Pistoni
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium.
| | - Marc Welters
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
| | - Kristel Eggermont
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
| | - Veerle Vanslembrouck
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
| | - Nicky Helsen
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
| | - Ruben Boon
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
| | - Mustapha Najimi
- Laboratory of Pediatric Hepatology and Cell Therapy, Université Catholique de Louvain, Cliniques St-Luc - Institut de Recherche Expérimentale et Clinique (IREC), Brussels 1200, Belgium
| | - Etienne Sokal
- Laboratory of Pediatric Hepatology and Cell Therapy, Université Catholique de Louvain, Cliniques St-Luc - Institut de Recherche Expérimentale et Clinique (IREC), Brussels 1200, Belgium
| | - Philippe Collas
- Faculty of Medicine, Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo 0372, Norway
| | - J Willem Voncken
- Department of Molecular Genetics, Maastricht University Medical Centre, 6229 ER Maastricht, the Netherlands
| | - Catherine M Verfaillie
- Department Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
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30
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Rashidi H, Alhaque S, Szkolnicka D, Flint O, Hay DC. Fluid shear stress modulation of hepatocyte-like cell function. Arch Toxicol 2016; 90:1757-61. [PMID: 26979076 PMCID: PMC4894932 DOI: 10.1007/s00204-016-1689-8] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 02/25/2016] [Indexed: 12/19/2022]
Abstract
Freshly isolated human adult hepatocytes are considered to be the gold standard tool for in vitro studies. However, primary hepatocyte scarcity, cell cycle arrest and the rapid loss of cell phenotype limit their widespread deployment. Human embryonic stem cells and induced pluripotent stem cells provide renewable sources of hepatocyte-like cells (HLCs). Despite the use of various differentiation methodologies, HLCs like primary human hepatocytes exhibit unstable phenotype in culture. It has been shown that the functional capacity can be improved by adding back elements of human physiology, such as cell co-culture or through the use of natural and/or synthetic surfaces. In this study, the effect of fluid shear stress on HLC performance was investigated. We studied two important liver functions, cytochrome P450 drug metabolism and serum protein secretion, in static cultures and those exposed to fluid shear stress. Our study demonstrates that fluid shear stress improved Cyp1A2 activity by approximately fivefold. This was paralleled by an approximate ninefold increase in sensitivity to a drug, primarily metabolised by Cyp2D6. In addition to metabolic capacity, fluid shear stress also improved hepatocyte phenotype with an approximate fourfold reduction in the secretion of a foetal marker, alpha-fetoprotein. We believe these studies highlight the importance of introducing physiologic cues in cell-based models to improve somatic cell phenotype.
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Affiliation(s)
- Hassan Rashidi
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, EH16 4UU, UK
| | - Sharmin Alhaque
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, EH16 4UU, UK
| | - Dagmara Szkolnicka
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, EH16 4UU, UK
| | - Oliver Flint
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, EH16 4UU, UK
| | - David C Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, EH16 4UU, UK.
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31
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Gómez-Lechón MJ, Tolosa L. Human hepatocytes derived from pluripotent stem cells: a promising cell model for drug hepatotoxicity screening. Arch Toxicol 2016; 90:2049-2061. [PMID: 27325232 DOI: 10.1007/s00204-016-1756-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 06/09/2016] [Indexed: 01/09/2023]
Abstract
Drug-induced liver injury (DILI) is a frequent cause of failure in both clinical and post-approval stages of drug development, and poses a key challenge to the pharmaceutical industry. Current animal models offer poor prediction of human DILI. Although several human cell-based models have been proposed for the detection of human DILI, human primary hepatocytes remain the gold standard for preclinical toxicological screening. However, their use is hindered by their limited availability, variability and phenotypic instability. In contrast, pluripotent stem cells, which include embryonic and induced pluripotent stem cells (iPSCs), proliferate extensively in vitro and can be differentiated into hepatocytes by the addition of soluble factors. This provides a stable source of hepatocytes for multiple applications, including early preclinical hepatotoxicity screening. In addition, iPSCs also have the potential to establish genotype-specific cells from different individuals, which would increase the predictivity of toxicity assays allowing more successful clinical trials. Therefore, the generation of human hepatocyte-like cells derived from pluripotent stem cells seems to be promising for overcoming limitations of hepatocyte preparations, and it is expected to have a substantial repercussion in preclinical hepatotoxicity risk assessment in early drug development stages.
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Affiliation(s)
- María José Gómez-Lechón
- Unidad de Hepatología Experimental, Instituto de Investigación Sanitaria La Fe, Hospital Universitario y Politécnico La Fe de Valencia, Torre A, 6ª Planta, Avenida Fernando Abril Martorell 106, 46026, Valencia, Spain.,CIBERehd, FIS, 08036, Barcelona, Spain
| | - Laia Tolosa
- Unidad de Hepatología Experimental, Instituto de Investigación Sanitaria La Fe, Hospital Universitario y Politécnico La Fe de Valencia, Torre A, 6ª Planta, Avenida Fernando Abril Martorell 106, 46026, Valencia, Spain.
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32
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Szkolnicka D, Lucendo-Villarin B, Moore JK, Simpson KJ, Forbes SJ, Hay DC. Reducing Hepatocyte Injury and Necrosis in Response to Paracetamol Using Noncoding RNAs. Stem Cells Transl Med 2016; 5:764-72. [PMID: 27057006 PMCID: PMC4878326 DOI: 10.5966/sctm.2015-0117] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 02/08/2016] [Indexed: 01/07/2023] Open
Abstract
UNLABELLED The liver performs multiple functions within the human body. It is composed of numerous cell types, which play important roles in organ physiology. Our study centers on the major metabolic cell type of the liver, the hepatocyte, and its susceptibility to damage during drug overdose. In these studies, hepatocytes were generated from a renewable and genetically defined resource. In vitro-derived hepatocytes were extensively profiled and exposed to varying levels of paracetamol and plasma isolated from liver-failure patients, with a view to identifying noncoding microRNAs that could reduce drug- or serum-induced hepatotoxicity. We identified a novel anti-microRNA, which reduced paracetamol-induced hepatotoxicity and glutathione depletion. Additionally, we identified a prosurvival role for anti-microRNA-324 following exposure to plasma collected from liver failure patients. We believe that these studies represent an important advance for the field, demonstrating the power of stem cell-derived systems to model human biology "in a dish" and identify novel noncoding microRNAs, which could be translated to the clinic in the future. SIGNIFICANCE The liver performs vital functions within the human body and is composed of numerous cell types. The major metabolic cell type of the liver, the hepatocyte, is susceptible to damage during drug overdose. In these studies, hepatocytes were generated from a renewable resource and exposed to varying levels of paracetamol, with a view to identifying interventions that could reduce or attenuate drug-induced liver toxicity. A novel noncoding RNA that reduced paracetamol-induced hepatocyte toxicity was identified. These findings may represent an important advance for the field.
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Affiliation(s)
- Dagmara Szkolnicka
- Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Baltasar Lucendo-Villarin
- Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Joanna K Moore
- Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Kenneth J Simpson
- Division of Clinical and Surgical Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Stuart J Forbes
- Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - David C Hay
- Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
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33
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Szkolnicka D, Hay DC. Concise Review: Advances in Generating Hepatocytes from Pluripotent Stem Cells for Translational Medicine. Stem Cells 2016; 34:1421-6. [PMID: 27015786 PMCID: PMC4982058 DOI: 10.1002/stem.2368] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/24/2016] [Accepted: 03/10/2016] [Indexed: 12/23/2022]
Abstract
The liver is one of the major organs in the human body. Severe or prolonged exposure of the liver to different factors may cause life-threatening disease, which necessitates donor organ transplantation. While orthotopic liver transplantation can be used to effectively treat liver failure, it is an invasive procedure, which is severely limited by organ donation. Therefore, alternative sources of liver support have been proposed and studied. This includes the use of pluripotent stem cell-derived hepatocytes as a renewable source of cells for therapy. In addition to cell-based therapies, in vitro engineered liver tissue provides powerful models for human drug discovery and disease modeling. This review focuses on the generation of hepatocyte-like cells from pluripotent stem cells and their application in translational medicine. Stem Cells 2016;34:1421-1426.
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Affiliation(s)
- Dagmara Szkolnicka
- Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - David C Hay
- Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, United Kingdom
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Lucendo-Villarin B, Rashidi H, Cameron K, Hay DC. Pluripotent stem cell derived hepatocytes: using materials to define cellular differentiation and tissue engineering. J Mater Chem B 2016; 4:3433-3442. [PMID: 27746914 PMCID: PMC5024673 DOI: 10.1039/c6tb00331a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 04/14/2016] [Indexed: 12/16/2022]
Abstract
Pluripotent stem cell derived liver cells (hepatocytes) represent a promising alternative to primary tissue for biological and clinical applications. To date, most hepatocyte maintenance and differentiation systems have relied upon the use of animal derived components. This serves as a significant barrier to large scale production and application of stem cell derived hepatocytes. Recently, the use of defined biologics has overcome those limitations in two-dimensional monolayer culture. In order to improve the cell phenotype further, three-dimensional culture systems have been employed to better mimic the in vivo situation, drawing upon materials chemistry, engineering and biology. In this review we discuss efforts in the field, to differentiate pluripotent stem cells towards hepatocytes under defined conditions.
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Affiliation(s)
- B Lucendo-Villarin
- Medical Research Council Centre for Regenerative Medicine , University of Edinburgh , 5 Little France Drive , Edinburgh , EH16 4UU , Scotland , UK . ; Tel: +44(0)1316519500
| | - H Rashidi
- Medical Research Council Centre for Regenerative Medicine , University of Edinburgh , 5 Little France Drive , Edinburgh , EH16 4UU , Scotland , UK . ; Tel: +44(0)1316519500
| | - K Cameron
- Medical Research Council Centre for Regenerative Medicine , University of Edinburgh , 5 Little France Drive , Edinburgh , EH16 4UU , Scotland , UK . ; Tel: +44(0)1316519500
| | - D C Hay
- Medical Research Council Centre for Regenerative Medicine , University of Edinburgh , 5 Little France Drive , Edinburgh , EH16 4UU , Scotland , UK . ; Tel: +44(0)1316519500
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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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Hansel MC, Davila JC, Vosough M, Gramignoli R, Skvorak KJ, Dorko K, Marongiu F, Blake W, Strom SC. The Use of Induced Pluripotent Stem Cells for the Study and Treatment of Liver Diseases. ACTA ACUST UNITED AC 2016; 67:14.13.1-14.13.27. [PMID: 26828329 DOI: 10.1002/0471140856.tx1413s67] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Liver disease is a major global health concern. Liver cirrhosis is one of the leading causes of death in the world and currently the only therapeutic option for end-stage liver disease (e.g., acute liver failure, cirrhosis, chronic hepatitis, cholestatic diseases, metabolic diseases, and malignant neoplasms) is orthotropic liver transplantation. Transplantation of hepatocytes has been proposed and used as an alternative to whole organ transplant to stabilize and prolong the lives of patients in some clinical cases. Although these experimental therapies have demonstrated promising and beneficial results, their routine use remains a challenge due to the shortage of donor livers available for cell isolation, variable quality of those tissues, the potential need for lifelong immunosuppression in the transplant recipient, and high costs. Therefore, new therapeutic strategies and more reliable clinical treatments are urgently needed. Recent and continuous technological advances in the development of stem cells suggest they may be beneficial in this respect. In this review, we summarize the history of stem cell and induced pluripotent stem cell (iPSC) technology in the context of hepatic differentiation and discuss the potential applications the technology may offer for human liver disease modeling and treatment. This includes developing safer drugs and cell-based therapies to improve the outcomes of patients with currently incurable health illnesses. We also review promising advances in other disease areas to highlight how the stem cell technology could be applied to liver diseases in the future. © 2016 by John Wiley & Sons, Inc.
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Affiliation(s)
- Marc C Hansel
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,McGowan Institute for Regenerative Medicine, Pittsburgh, Pennsylvania
| | - Julio C Davila
- Department of Biochemistry, University of Puerto Rico School of Medicine, Medical Sciences Campus, San Juan, Puerto Rico
| | - Massoud Vosough
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Roberto Gramignoli
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Kristen J Skvorak
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Kenneth Dorko
- Department of Pharmacology, Toxicology and Therapeutics, Kansas University Medical Center, Kansas City, Kansas
| | - Fabio Marongiu
- Department of Biomedical Sciences, Section of Experimental Pathology, Unit of Experimental Medicine, University of Cagliari, Cagliari, Italy
| | - William Blake
- Genetically Modified Models Center of Emphasis, Pfizer, Groton, Connecticut
| | - Stephen C Strom
- McGowan Institute for Regenerative Medicine, Pittsburgh, Pennsylvania.,Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Stockholm, Sweden
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Cantz T, Sharma AD, Ott M. Concise review: cell therapies for hereditary metabolic liver diseases-concepts, clinical results, and future developments. Stem Cells 2016; 33:1055-62. [PMID: 25524146 DOI: 10.1002/stem.1920] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 10/23/2014] [Accepted: 11/07/2014] [Indexed: 12/11/2022]
Abstract
The concept of cell-based therapies for inherited metabolic liver diseases has been introduced for now more than 40 years in animal experiments, but controlled clinical data in humans are still not available. In the era of dynamic developments in stem cell science, the "right" cell for transplantation is considered as an important key for successful treatment. Do we aim to transplant mature hepatocytes or do we consider the liver as a stem/progenitor-driven organ and replenish the diseased liver with genetically normal stem/progenitor cells? Although conflicting results from cell tracing and transplantation experiments have recently emerged about the existence and role of stem/progenitor cells in the liver, their overall contribution to parenchymal cell homeostasis and tissue repair is limited. Accordingly, engraftment and repopulation efficacies of extrahepatic and liver-derived stem/progenitor cell types are considered to be lower compared to mature hepatocytes. On the basis of these results, we will discuss the current clinical cell transplantation programs for inherited metabolic liver diseases and future developments in liver cell therapy.
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Affiliation(s)
- Tobias Cantz
- Translational Hepatology and Stem Cell Biology, Cluster of Excellence REBIRTH, Hannover, Germany; Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
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Cameron K, Tan R, Schmidt-Heck W, Campos G, Lyall MJ, Wang Y, Lucendo-Villarin B, Szkolnicka D, Bates N, Kimber SJ, Hengstler JG, Godoy P, Forbes SJ, Hay DC. Recombinant Laminins Drive the Differentiation and Self-Organization of hESC-Derived Hepatocytes. Stem Cell Reports 2015; 5:1250-1262. [PMID: 26626180 PMCID: PMC4682209 DOI: 10.1016/j.stemcr.2015.10.016] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 10/28/2015] [Accepted: 10/29/2015] [Indexed: 12/19/2022] Open
Abstract
Stem cell-derived somatic cells represent an unlimited resource for basic and translational science. Although promising, there are significant hurdles that must be overcome. Our focus is on the generation of the major cell type of the human liver, the hepatocyte. Current protocols produce variable populations of hepatocytes that are the product of using undefined components in the differentiation process. This serves as a significant barrier to scale-up and application. To tackle this issue, we designed a defined differentiation process using recombinant laminin substrates to provide instruction. We demonstrate efficient hepatocyte specification, cell organization, and significant improvements in cell function and phenotype. This is driven in part by the suppression of unfavorable gene regulatory networks that control cell proliferation and migration, pluripotent stem cell self-renewal, and fibroblast and colon specification. We believe that this represents a significant advance, moving stem cell-based hepatocytes closer toward biomedical application.
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Affiliation(s)
- Kate Cameron
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Rosanne Tan
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Wolfgang Schmidt-Heck
- Leibniz Institute for Natural Product Research and Infection Biology eV-Hans-Knöll Institute, 07743 Jena, Germany
| | - Gisela Campos
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Ardeystraße 67, 44139 Dortmund, Germany
| | - Marcus J Lyall
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Yu Wang
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | | | - Dagmara Szkolnicka
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Nicola Bates
- Faculty of Life Sciences, Michael Smith Building, Oxford Road, Manchester M13 9PT, UK
| | - Susan J Kimber
- Faculty of Life Sciences, Michael Smith Building, Oxford Road, Manchester M13 9PT, UK
| | - Jan G Hengstler
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Ardeystraße 67, 44139 Dortmund, Germany
| | - Patricio Godoy
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Ardeystraße 67, 44139 Dortmund, Germany
| | - Stuart J Forbes
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - David C Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK.
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Godoy P, Schmidt-Heck W, Natarajan K, Lucendo-Villarin B, Szkolnicka D, Asplund A, Björquist P, Widera A, Stöber R, Campos G, Hammad S, Sachinidis A, Chaudhari U, Damm G, Weiss TS, Nüssler A, Synnergren J, Edlund K, Küppers-Munther B, Hay DC, Hengstler JG. Gene networks and transcription factor motifs defining the differentiation of stem cells into hepatocyte-like cells. J Hepatol 2015; 63:934-42. [PMID: 26022688 PMCID: PMC4580233 DOI: 10.1016/j.jhep.2015.05.013] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/25/2015] [Accepted: 05/11/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND & AIMS The differentiation of stem cells to hepatocyte-like cells (HLC) offers the perspective of unlimited supply of human hepatocytes. However, the degree of differentiation of HLC remains controversial. To obtain an unbiased characterization, we performed a transcriptomic study with HLC derived from human embryonic and induced stem cells (ESC, hiPSC) from three different laboratories. METHODS Genome-wide gene expression profiles of ESC and HLC were compared to freshly isolated and up to 14days cultivated primary human hepatocytes. Gene networks representing successful and failed hepatocyte differentiation, and the transcription factors involved in their regulation were identified. RESULTS Gene regulatory network analysis demonstrated that HLC represent a mixed cell type with features of liver, intestine, fibroblast and stem cells. The "unwanted" intestinal features were associated with KLF5 and CDX2 transcriptional networks. Cluster analysis identified highly correlated groups of genes associated with mature liver functions (n=1057) and downregulated proliferation associated genes (n=1562) that approach levels of primary hepatocytes. However, three further clusters containing 447, 101, and 505 genes failed to reach levels of hepatocytes. Key TF of two of these clusters include SOX11, FOXQ1, and YBX3. The third unsuccessful cluster, controlled by HNF1, CAR, FXR, and PXR, strongly overlaps with genes repressed in cultivated hepatocytes compared to freshly isolated hepatocytes, suggesting that current in vitro conditions lack stimuli required to maintain gene expression in hepatocytes, which consequently also explains a corresponding deficiency of HLC. CONCLUSIONS The present gene regulatory network approach identifies key transcription factors which require modulation to improve HLC differentiation.
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Affiliation(s)
- Patricio Godoy
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany,Department of Physiology, Faculty of Biological Sciences, University of Concepción, Chile
| | - Wolfgang Schmidt-Heck
- Leibniz Institute for Natural Product Research and Infection Biology eV-Hans-Knöll Institute, Jena, Germany
| | - Karthick Natarajan
- University of Cologne, Institute of Neurophysiology and Center for Molecular Medicine Cologne (CMMC), Robert-Koch-Str. 39, 50931 Cologne, Germany
| | | | - Dagmara Szkolnicka
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Annika Asplund
- Takara Bio Europe AB (former Cellartis AB), Arvid Wallgrens Backe 20, 41346 Gothenburg, Sweden,Systems Biology Research Center, School of Bioscience, University of Skövde, Sweden
| | | | - Agata Widera
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | - Regina Stöber
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | - Gisela Campos
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | - Seddik Hammad
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | - Agapios Sachinidis
- University of Cologne, Institute of Neurophysiology and Center for Molecular Medicine Cologne (CMMC), Robert-Koch-Str. 39, 50931 Cologne, Germany
| | - Umesh Chaudhari
- University of Cologne, Institute of Neurophysiology and Center for Molecular Medicine Cologne (CMMC), Robert-Koch-Str. 39, 50931 Cologne, Germany
| | - Georg Damm
- Charité University Medicine Berlin, Department of General-, Visceral- and Transplantation Surgery, D13353 Berlin, Germany
| | - Thomas S. Weiss
- Center for Liver Cell Research, Department of Pediatrics and Juvenile Medicine, University of Regensburg Hospital, Regensburg, Germany
| | - Andreas Nüssler
- Eberhard Karls University Tübingen, BG Trauma Center, Siegfried Weller Institut, D72076 Tübingen, Germany
| | - Jane Synnergren
- Systems Biology Research Center, School of Bioscience, University of Skövde, Sweden
| | - Karolina Edlund
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany
| | - Barbara Küppers-Munther
- Takara Bio Europe AB (former Cellartis AB), Arvid Wallgrens Backe 20, 41346 Gothenburg, Sweden
| | - David C. Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom,Corresponding authors. Addresses: MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh, United Kingdom. Tel.: +44 131 651 9549; fax: +44 131 651 9501 (D. Hay). Leibniz Research Centre for Working Environment and Human Factors at the Technical University of Dortmund, Ardeystrasse 67, 44139 Dortmund, Germany. Tel.: +49 231 108 4348; fax: +49 231 108 4403 (J.G. Hengstler).
| | - Jan G. Hengstler
- IfADo-Leibniz Research Centre for Working Environment and Human Factors at the Technical University Dortmund, Dortmund, Germany,Corresponding authors. Addresses: MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, Edinburgh, United Kingdom. Tel.: +44 131 651 9549; fax: +44 131 651 9501 (D. Hay). Leibniz Research Centre for Working Environment and Human Factors at the Technical University of Dortmund, Ardeystrasse 67, 44139 Dortmund, Germany. Tel.: +49 231 108 4348; fax: +49 231 108 4403 (J.G. Hengstler).
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40
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Ghallab A. Highlight report: perspectives in stem cell research--unbiased quantification of the similarity between in vitro generated and primary hepatocytes. Arch Toxicol 2015; 89:2185-7. [PMID: 26410582 DOI: 10.1007/s00204-015-1597-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 09/08/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Ahmed Ghallab
- Forensic Medicine and Toxicology Department, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.
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Liu J, Brzeszczynska J, Samuel K, Black J, Palakkan A, Anderson RA, Gallagher R, Ross JA. Efficient episomal reprogramming of blood mononuclear cells and differentiation to hepatocytes with functional drug metabolism. Exp Cell Res 2015; 338:203-13. [PMID: 26256888 DOI: 10.1016/j.yexcr.2015.08.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 08/04/2015] [Accepted: 08/06/2015] [Indexed: 12/12/2022]
Abstract
The possibility of converting cells from blood mononuclear cells (MNC) to liver cells provides promising opportunities for the study of diseases and the assessment of new drugs. However, clinical applications have to meet GMP requirements and the methods for generating induced pluripotent cells (iPCs) have to avoid insertional mutagenesis, a possibility when using viral vehicles for the delivery of reprogramming factors. We have developed an efficient non-integration method for reprogramming fresh or frozen blood MNC, maintained in an optimised cytokine cocktail, to generate induced pluripotent cells. Using electroporation for the effective delivery of episomal transcription factors (Oct4, Sox2, Klf4, L-Myc, and Lin28) in a feeder-free system, without any requirement for small molecules, we achieved a reprogramming efficiency of up to 0.033% (65 colonies from 2×10(5) seeded MNC). Applying the same cytokine cocktail and reprogramming methods to cord blood or fetal liver-derived CD34(+) cells, we obtained 148 iPS colonies from 10(5) seeding cells (0.148%). The iPS cell lines we generated maintained typical characteristics of pluripotent cells and could be successfully differentiated into hepatocytes with drug metabolic function.
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Affiliation(s)
- Jing Liu
- Scottish National Blood Transfusion Service (SNBTS) Cell Therapy Group, Centre for Regenerative Medicine, The Chancellor's Building, 49 Little France Crescent, Edinburgh EH16 4SB, United Kingdom; Tissue Injury and Repair Group, MRC Centre for Regenerative Medicine, University of Edinburgh, EH16 4SB United Kingdom; Peking University Institute of Hematology, Peking University People's Hospital, Beijing, 100044 China
| | - Joanna Brzeszczynska
- Tissue Injury and Repair Group, MRC Centre for Regenerative Medicine, University of Edinburgh, EH16 4SB United Kingdom
| | - Kay Samuel
- Scottish National Blood Transfusion Service (SNBTS) Cell Therapy Group, Centre for Regenerative Medicine, The Chancellor's Building, 49 Little France Crescent, Edinburgh EH16 4SB, United Kingdom
| | - Jim Black
- Tissue Injury and Repair Group, MRC Centre for Regenerative Medicine, University of Edinburgh, EH16 4SB United Kingdom
| | - Anwar Palakkan
- Tissue Injury and Repair Group, MRC Centre for Regenerative Medicine, University of Edinburgh, EH16 4SB United Kingdom
| | - Richard A Anderson
- MRC Centre for Reproductive Health, University of Edinburgh, 47, Little France Crescent, Edinburgh EH16 4TJ, United Kingdom
| | - Ronald Gallagher
- Scottish National Blood Transfusion Service (SNBTS) Cell Therapy Group, Centre for Regenerative Medicine, The Chancellor's Building, 49 Little France Crescent, Edinburgh EH16 4SB, United Kingdom.
| | - James A Ross
- Tissue Injury and Repair Group, MRC Centre for Regenerative Medicine, University of Edinburgh, EH16 4SB United Kingdom.
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De Assuncao TM, Sun Y, Jalan-Sakrikar N, Drinane M, Huang BQ, Li Y, Davila JI, Wang R, O’Hara SP, Lomberk GA, Urrutia RA, Ikeda Y, Huebert RC. Development and characterization of human-induced pluripotent stem cell-derived cholangiocytes. J Transl Med 2015; 95:684-96. [PMID: 25867762 PMCID: PMC4447567 DOI: 10.1038/labinvest.2015.51] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/26/2015] [Accepted: 02/04/2015] [Indexed: 12/25/2022] Open
Abstract
Cholangiocytes are the target of a heterogeneous group of liver diseases known as the cholangiopathies. An evolving understanding of the mechanisms driving biliary development provides the theoretical underpinnings for rational development of induced pluripotent stem cell (iPSC)-derived cholangiocytes (iDCs). Therefore, the aims of this study were to develop an approach to generate iDCs and to fully characterize the cells in vitro and in vivo. Human iPSC lines were generated by forced expression of the Yamanaka pluripotency factors. We then pursued a stepwise differentiation strategy toward iDCs, using precise temporal exposure to key biliary morphogens, and we characterized the cells, using a variety of morphologic, molecular, cell biologic, functional, and in vivo approaches. Morphology shows a stepwise phenotypic change toward an epithelial monolayer. Molecular analysis during differentiation shows appropriate enrichment in markers of iPSC, definitive endoderm, hepatic specification, hepatic progenitors, and ultimately cholangiocytes. Immunostaining, western blotting, and flow cytometry demonstrate enrichment of multiple functionally relevant biliary proteins. RNA sequencing reveals that the transcriptome moves progressively toward that of human cholangiocytes. iDCs generate intracellular calcium signaling in response to ATP, form intact primary cilia, and self-assemble into duct-like structures in three-dimensional culture. In vivo, the cells engraft within mouse liver, following retrograde intrabiliary infusion. In summary, we have developed a novel approach to generate mature cholangiocytes from iPSCs. In addition to providing a model of biliary differentiation, iDCs represent a platform for in vitro disease modeling, pharmacologic testing, and individualized, cell-based, regenerative therapies for the cholangiopathies.
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Affiliation(s)
- Thiago M. De Assuncao
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Yan Sun
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Nidhi Jalan-Sakrikar
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Mary Drinane
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Bing Q. Huang
- Center for Basic Research in Digestive Diseases, Mayo Clinic and Foundation, Rochester, MN
| | - Ying Li
- Division of Biomedical Statistics and Informatics, Mayo Clinic and Foundation, Rochester, MN
| | - Jaime I. Davila
- Division of Biomedical Statistics and Informatics, Mayo Clinic and Foundation, Rochester, MN
| | - Ruisi Wang
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - Steven P. O’Hara
- Center for Basic Research in Digestive Diseases, Mayo Clinic and Foundation, Rochester, MN
| | - Gwen A. Lomberk
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN,Center for Cell Signaling in Gastroenterology, Mayo Clinic and Foundation, Rochester, MN
| | - Raul A. Urrutia
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN,Center for Cell Signaling in Gastroenterology, Mayo Clinic and Foundation, Rochester, MN
| | - Yasuhiro Ikeda
- Department of Molecular Medicine; Mayo Clinic and Foundation, Rochester, MN
| | - Robert C. Huebert
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN,Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN,Center for Cell Signaling in Gastroenterology, Mayo Clinic and Foundation, Rochester, MN
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43
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From Human-Induced Pluripotent Stem Cells to Liver Disease Modeling: A Focus on Dyslipidemia. CURRENT PATHOBIOLOGY REPORTS 2015. [DOI: 10.1007/s40139-015-0067-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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