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Ye Y, Xie W, Ma Z, Wang X, Wen Y, Li X, Qi H, Wu H, An J, Jiang Y, Lu X, Chen G, Hu S, Blaber EA, Chen X, Chang L, Zhang W. Conserved mechanisms of self-renewal and pluripotency in mouse and human ESCs regulated by simulated microgravity using a 3D clinostat. Cell Death Discov 2024; 10:68. [PMID: 38336777 PMCID: PMC10858198 DOI: 10.1038/s41420-024-01846-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/01/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024] Open
Abstract
Embryonic stem cells (ESCs) exhibit unique attributes of boundless self-renewal and pluripotency, making them invaluable for fundamental investigations and clinical endeavors. Previous examinations of microgravity effects on ESC self-renewal and differentiation have predominantly maintained a descriptive nature, constrained by limited experimental opportunities and techniques. In this investigation, we present compelling evidence derived from murine and human ESCs, demonstrating that simulated microgravity (SMG)-induced stress significantly impacts self-renewal and pluripotency through a previously unidentified conserved mechanism. Specifically, SMG induces the upregulation of heat shock protein genes, subsequently enhancing the expression of core pluripotency factors and activating the Wnt and/or LIF/STAT3 signaling pathways, thereby fostering ESC self-renewal. Notably, heightened Wnt pathway activity, facilitated by Tbx3 upregulation, prompts mesoendodermal differentiation in both murine and human ESCs under SMG conditions. Recognizing potential disparities between terrestrial SMG simulations and authentic microgravity, forthcoming space flight experiments are imperative to validate the impact of reduced gravity on ESC self-renewal and differentiation mechanisms.
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Affiliation(s)
- Ying Ye
- Medical College of Soochow University, Suzhou, China
| | - Wenyan Xie
- Medical College of Soochow University, Suzhou, China
| | - Zhaoru Ma
- Medical College of Soochow University, Suzhou, China
| | - Xuepeng Wang
- Medical College of Soochow University, Suzhou, China
| | - Yi Wen
- Shenzhen Key Laboratory of Gene Regulation and Systems Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, China
| | - Xuemei Li
- School of Basic Medical Sciences, Binzhou Medical University, Yantai, China
| | - Hongqian Qi
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, Tianjin, 300350, China
| | - Hao Wu
- Medical College of Soochow University, Suzhou, China
| | - Jinnan An
- Institute of Blood and Marrow Transplantation, Medical College of Soochow University, Suzhou, China
| | - Yan Jiang
- School of Biology and Basic Medical Sciences, Medical College of Soochow University, Suzhou, China
| | - Xinyi Lu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, Tianjin, 300350, China
| | - Guokai Chen
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macao SAR, China
| | - Shijun Hu
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, 215000, China.
| | - Elizabeth A Blaber
- Department of Biomedical Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Xi Chen
- Shenzhen Key Laboratory of Gene Regulation and Systems Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, China.
| | - Lei Chang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Jiangsu Province International Joint Laboratory For Regeneration Medicine, Medical College of Soochow University, Suzhou, China.
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Kumari K, Tandon S, Ghosh S, Baligar P. Gelatin scaffold ameliorates proliferation & stem cell differentiation into the hepatic like cell and support liver regeneration in partial-hepatectomized mice model. Biomed Mater 2023; 18:065022. [PMID: 37860885 DOI: 10.1088/1748-605x/ad04fd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 10/19/2023] [Indexed: 10/21/2023]
Abstract
Stem cell-based tissue engineering is an emerging tool for developing functional tissues of choice. To understand pluripotency and hepatic differentiation of mouse embryonic stem cells (mESCs) on a three-dimensional (3D) scaffold, we established an efficient approach for generating hepatocyte-like cells (HLCs) from hepatoblast cells. We developed porous and biodegradable scaffold, which was stimulated with exogenous growth factors and investigated stemness and differentiation capacity of mESCs into HLCs on the scaffoldin-vitro. In animal studies, we had cultured mESCs-derived hepatoblast-like cells on the scaffold and then, transplanted them into the partially hepatectomized C57BL/6 male mice model to evaluate the effect of gelatin scaffold on hepatic regeneration. The 3D culture system allowed maintenance of stemness properties in mESCs. The step-wise induction of mESCs with differentiation factors leads to the formation of HLCs and expressed liver-specific genes, including albumin, hepatocyte nucleic factor 4 alpha, and cytokeratin 18. In addition, cells also expressed Ki67, indicating cells are proliferating. The secretome showed expression of albumin, urea, creatinine, alanine transaminase, and aspartate aminotransferase. However, the volume of the excised liver which aids regeneration has not been studied. Our results indicate that hepatoblast cells on the scaffold implanted in PH mouse indicates that these cells efficiently differentiate into HLCs and cholangiocytes, forming hepatic lobules with central and portal veins, and bile duct-like structures with neovascularization. The gelatin scaffold provides an efficient microenvironment for liver differentiation and regeneration bothin-vitroandin-vivo. These hepatoblasts cells would be a valuable source for 3D liver tissue engineering/transplantation in liver diseases.
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Affiliation(s)
- Kshama Kumari
- Amity Institute of Molecular Medicine & Stem Cell Research (AIMMSCR), Amity University, Noida, Uttar Pradesh, India
| | | | - Sourabh Ghosh
- Regenerative Engineering Laboratory, Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Prakash Baligar
- Amity Institute of Molecular Medicine & Stem Cell Research (AIMMSCR), Amity University, Noida, Uttar Pradesh, India
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Cui Y, Liu W, Zhao S, Zhao Y, Dai J. Advances in Microgravity Directed Tissue Engineering. Adv Healthc Mater 2023; 12:e2202768. [PMID: 36893386 DOI: 10.1002/adhm.202202768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/28/2023] [Indexed: 03/11/2023]
Abstract
Tissue engineering aims to generate functional biological substitutes to repair, sustain, improve, or replace tissue function affected by disease. With the rapid development of space science, the application of simulated microgravity has become an active topic in the field of tissue engineering. There is a growing body of evidence demonstrating that microgravity offers excellent advantages for tissue engineering by modulating cellular morphology, metabolism, secretion, proliferation, and stem cell differentiation. To date, there have been many achievements in constructing bioartificial spheroids, organoids, or tissue analogs with or without scaffolds in vitro under simulated microgravity conditions. Herein, the current status, recent advances, challenges, and prospects of microgravity related to tissue engineering are reviewed. Current simulated-microgravity devices and cutting-edge advances of microgravity for biomaterials-dependent or biomaterials-independent tissue engineering to offer a reference for guiding further exploration of simulated microgravity strategies to produce engineered tissues are summarized and discussed.
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Affiliation(s)
- Yi Cui
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, 100081, China
| | - Weiyuan Liu
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Shuaijing Zhao
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Yannan Zhao
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Jianwu Dai
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
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Hussein M, Pasqua M, Pereira U, Benzoubir N, Duclos-Vallée JC, Dubart-Kupperschmitt A, Legallais C, Messina A. Microencapsulated Hepatocytes Differentiated from Human Induced Pluripotent Stem Cells: Optimizing 3D Culture for Tissue Engineering Applications. Cells 2023; 12:cells12060865. [PMID: 36980206 PMCID: PMC10047414 DOI: 10.3390/cells12060865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/02/2023] [Accepted: 03/03/2023] [Indexed: 03/14/2023] Open
Abstract
Liver cell therapy and in vitro models require functional human hepatocytes, the sources of which are considerably limited. Human induced pluripotent stem cells (hiPSCs) represent a promising and unlimited source of differentiated human hepatocytes. However, when obtained in two-dimensional (2D) cultures these hepatocytes are not fully mature and functional. As three-dimensional culture conditions offer advantageous strategies for differentiation, we describe here a combination of three-dimensional (3D) approaches enabling the successful differentiation of functional hepatocytes from hiPSCs by the encapsulation of hiPSC-derived hepatoblasts in alginate beads of preformed aggregates. The resulting encapsulated and differentiated hepatocytes (E-iHep-Orgs) displayed a high level of albumin synthesis associated with the disappearance of α-fetoprotein (AFP) synthesis, thus demonstrating that the E-iHep-Orgs had reached a high level of maturation, similar to that of adult hepatocytes. Gene expression analysis by RT-PCR and immunofluorescence confirmed this maturation. Further functional assessments demonstrated their enzymatic activities, including lactate and ammonia detoxification, as well as biotransformation activities of Phase I and Phase II enzymes. This study provides proof of concept regarding the benefits of combining three-dimensional techniques (guided aggregation and microencapsulation) with liver differentiation protocols as a robust approach to generate mature and functional hepatocytes that offer a permanent and unlimited source of hepatocytes. Based on these encouraging results, our combined conditions to produce mature hepatocytes from hiPSCs could be extended to liver tissue engineering and bioartificial liver (BAL) applications at the human scale for which large biomasses are mandatory.
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Affiliation(s)
- Marwa Hussein
- UMR_S 1193, INSERM/Université Paris Saclay, F-94800 Villejuif, France
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
| | - Mattia Pasqua
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
- UMR CNRS 7338 Biomechanics & Bioengineering, Université de Technologie de Compiègne, Sorbonne Universités, F-60203 Compiegne, France
| | - Ulysse Pereira
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
- UMR CNRS 7338 Biomechanics & Bioengineering, Université de Technologie de Compiègne, Sorbonne Universités, F-60203 Compiegne, France
| | - Nassima Benzoubir
- UMR_S 1193, INSERM/Université Paris Saclay, F-94800 Villejuif, France
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
| | - Jean-Charles Duclos-Vallée
- UMR_S 1193, INSERM/Université Paris Saclay, F-94800 Villejuif, France
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
| | - Anne Dubart-Kupperschmitt
- UMR_S 1193, INSERM/Université Paris Saclay, F-94800 Villejuif, France
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
| | - Cecile Legallais
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
- UMR CNRS 7338 Biomechanics & Bioengineering, Université de Technologie de Compiègne, Sorbonne Universités, F-60203 Compiegne, France
- Correspondence: (C.L.); (A.M.)
| | - Antonietta Messina
- UMR_S 1193, INSERM/Université Paris Saclay, F-94800 Villejuif, France
- Fédération Hospitalo-Universitaire (FHU) Hépatinov, F-94800 Villejuif, France
- Correspondence: (C.L.); (A.M.)
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Weng Y, Han S, Sekyi MT, Su T, Mattis AN, Chang TT. Self-Assembled Matrigel-Free iPSC-Derived Liver Organoids Demonstrate Wide-Ranging Highly Differentiated Liver Functions. Stem Cells 2023; 41:126-139. [PMID: 36573434 PMCID: PMC9982071 DOI: 10.1093/stmcls/sxac090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/12/2022] [Indexed: 12/28/2022]
Abstract
Human induced pluripotent stem cell (iPSC)-derived liver organoids serve as models of organogenesis, disease, drug screening, and regenerative medicine. Prevailing methods for generating organoids rely on Matrigel, whose batch-to-batch variability and xenogeneic source pose challenges to mechanistic research and translation to human clinical therapy. In this report, we demonstrate that self-assembled Matrigel-free iPSC-derived organoids developed in rotating wall vessels (RWVs) exhibit greater hepatocyte-specific functions than organoids formed on Matrigel. We show that RWVs produce highly functional liver organoids in part by eliminating the need for Matrigel, which has adverse effects on hepatic lineage differentiation. RWV liver organoids sustain durable function over long-term culture and express a range of mature functional genes at levels comparable to adult human liver, while retaining some fetal features. Our results indicate that RWVs provide a simple and high-throughput way to generate Matrigel-free liver organoids suitable for research and clinical applications.
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Affiliation(s)
- Yun Weng
- Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Simon Han
- Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Maria T Sekyi
- Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Tao Su
- Department of Pathology, University of California, San Francisco, CA 94143, USA
| | - Aras N Mattis
- Department of Pathology, University of California, San Francisco, CA 94143, USA
- Liver Center, University of California, San Francisco, CA 94143, USA
| | - Tammy T Chang
- Department of Surgery, University of California, San Francisco, CA 94143, USA
- Liver Center, University of California, San Francisco, CA 94143, USA
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Xie X, Zhou X, Liu T, Zhong Z, Zhou Q, Iqbal W, Xie Q, Wei C, Zhang X, Chang TMS, Sun P. Direct Differentiation of Human Embryonic Stem Cells to 3D Functional Hepatocyte-like Cells in Alginate Microencapsulation Sphere. Cells 2022; 11:3134. [PMID: 36231094 PMCID: PMC9562699 DOI: 10.3390/cells11193134] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/19/2022] [Accepted: 09/30/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The lack of a stable source of hepatocytes is one of major limitations in hepatocyte transplantation and clinical applications of a bioartificial liver. Human embryonic stem cells (hESCs) with a high degree of self-renewal and totipotency are a potentially limitless source of a variety of cell lineages, including hepatocytes. Many techniques have been developed for effective differentiation of hESCs into functional hepatocyte-like cells. However, the application of hESC-derived hepatocyte-like cells (hESC-Heps) in the clinic has been constrained by the low yield of fully differentiated cells, small-scale culture, difficulties in harvesting, and immunologic graft rejection. To resolve these shortcomings, we developed a novel 3D differentiation system involving alginate-microencapsulated spheres to improve current hepatic differentiation, providing ready-to-use hESC-Heps. METHODS In this study, we used alginate microencapsulation technology to differentiate human embryonic stem cells into hepatocyte-like cells (hESC-Heps). Hepatic markers of hESC-Heps were examined by qPCR and Western blotting, and hepatic functions of hESC-Heps were evaluated by indocyanine-green uptake and release, and ammonia removal. RESULTS The maturity and hepatic functions of the hESC-Heps derived from this 3D system were better than those derived from 2D culture. Hepatocyte-enriched genes, such as HNF4α, AFP, and ALB, were expressed at higher levels in 3D hESC-Heps than in 2D hESC-Heps. 3D hESC-Heps could metabolize indocyanine green and had better capacity to scavenge ammonia. In addition, the 3D sodium alginate hydrogel microspheres could block viral entry into the microspheres, and thus protect hESC-Heps in 3D microspheres from viral infection. CONCLUSION We developed a novel 3D differentiation system for differentiating hESCs into hepatocyte-like cells by using alginate microcapsules.
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Affiliation(s)
- Xiaoling Xie
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- Guangdong Chaozhou Health Vocational College, Chaozhou 521000, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
| | - Xiaoling Zhou
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
| | - Tingdang Liu
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
| | - Zhiqian Zhong
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
| | - Qi Zhou
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
| | - Waqas Iqbal
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
| | - Qingdong Xie
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
| | - Chiju Wei
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Xin Zhang
- Laboratory of Molecular Cardiology, First Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
| | - Thomas Ming Swi Chang
- Artificial Cells & Organs Research Centre, Departments of Physiology, Medicine & Biomedical Engineering, McGill University, Montreal, QC H3G 1Y6, Canada
| | - Pingnan Sun
- Stem Cell Research Center, Shantou University Medical College, Shantou 515041, China
- The Center for Reproductive Medicine, Shantou University Medical College, Shantou 515041, China
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou 515041, China
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Rampoldi A, Forghani P, Li D, Hwang H, Armand LC, Fite J, Boland G, Maxwell J, Maher K, Xu C. Space microgravity improves proliferation of human iPSC-derived cardiomyocytes. Stem Cell Reports 2022; 17:2272-2285. [PMID: 36084640 PMCID: PMC9561632 DOI: 10.1016/j.stemcr.2022.08.007] [Citation(s) in RCA: 7] [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] [Received: 04/03/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/30/2022] Open
Abstract
In microgravity, cells undergo profound changes in their properties. However, how human cardiac progenitors respond to space microgravity is unknown. In this study, we evaluated the effect of space microgravity on differentiation of human induced pluripotent stem cell (hiPSC)-derived cardiac progenitors compared with 1G cultures on the International Space Station (ISS). Cryopreserved 3D cardiac progenitors were cultured for 3 weeks on the ISS. Compared with 1G cultures, the microgravity cultures had 3-fold larger sphere sizes, 20-fold higher counts of nuclei, and increased expression of proliferation markers. Highly enriched cardiomyocytes generated in space microgravity showed improved Ca2+ handling and increased expression of contraction-associated genes. Short-term exposure (3 days) of cardiac progenitors to space microgravity upregulated genes involved in cell proliferation, survival, cardiac differentiation, and contraction, consistent with improved microgravity cultures at the late stage. These results indicate that space microgravity increased proliferation of hiPSC-cardiomyocytes, which had appropriate structure and function. Cryopreserved 3D hiPSC-cardiac progenitors differentiated efficiently in space Microgravity cultures had increased sphere sizes and cellular proliferation Beating cardiomyocytes in microgravity cultures had improved Ca2+ handling Microgravity cultures had upregulated genes in cardiac contraction
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Affiliation(s)
- Antonio Rampoldi
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Parvin Forghani
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Dong Li
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Hyun Hwang
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Lawrence Christian Armand
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | | | | | - Joshua Maxwell
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Kevin Maher
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Chunhui Xu
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA.
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Li F, Ye Y, Lei X, Zhang W. Effects of Microgravity on Early Embryonic Development and Embryonic Stem Cell Differentiation: Phenotypic Characterization and Potential Mechanisms. Front Cell Dev Biol 2021; 9:797167. [PMID: 34926474 PMCID: PMC8675004 DOI: 10.3389/fcell.2021.797167] [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] [Received: 10/18/2021] [Accepted: 11/15/2021] [Indexed: 11/20/2022] Open
Abstract
With the development of science and technology, mankind’s exploration of outer space has increased tremendously. Settling in outer space or on other planets could help solve the Earth’s resource crisis, but such settlement will first face the problem of reproduction. There are considerable differences between outer space and the Earth’s environment, with the effects of gravity being one of the most significant. Studying the possible effects and underlying mechanisms of microgravity on embryonic stem cell (ESC) differentiation and embryonic development could help provide solutions to healthy living and reproduction in deep space. This article summarizes recent research progress on the effects of microgravity on ESCs and early embryonic development and proposes hypotheses regarding the potential mechanisms. In addition, we discuss the controversies and key questions in the field and indicate directions for future research.
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Affiliation(s)
- Feng Li
- Department of Urinary Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ying Ye
- Cam-Su Genomic Resource Center, Medical College of Soochow University, Suzhou, China
| | - Xiaohua Lei
- Center for Energy Metabolism and Reproduction, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Wensheng Zhang
- Cam-Su Genomic Resource Center, Medical College of Soochow University, Suzhou, China.,Department of Physiology, School of Basic Medical Sciences, Binzhou Medical University, Yantai, China
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9
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Nishimura Y, Wang PC. Possibility of culturing the early developing kidney cells by utilizing simulated microgravity environment. Biochem Biophys Res Commun 2021; 573:9-12. [PMID: 34375766 DOI: 10.1016/j.bbrc.2021.08.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 08/04/2021] [Indexed: 11/28/2022]
Abstract
In recent years, the successful construction of tissues derived from established iPSCs has been disclosed, but it has been reported that the constructed tissues encounter problems of internal necrosis when their size increases. To solve this problem, a simulated microgravity device is used. However, the culture of early developing kidney cells using this device has not yet been reported. This study investigated whether developing kidney cells cultured in a simulated microgravity environment can differentiate into glomerular cells and renal epithelial cells. The results showed that both mouse developing kidney cells cultured in simulated microgravity and static environment formed kidney spheroids. In static culture, ureteric bud and glomerular structures were not found. While ureteric buds, podocytes, PECAM-1 positive cell aggregates, and primordial vascular plexus were formed in the kidney spheroids in simulated microgravity culture. Moreover, the expression level of the PECAM-1 gene was significant in simulated microgravity culture as compared to that of static culture. These results indicate that simulated microgravity is effective for the differentiation of developing kidney cells.
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Affiliation(s)
- Yusuke Nishimura
- Course of Clinical Engineering, Kitasato Junior College of Health Hygienic Sciences, Niigata, Japan.
| | - Pi-Chao Wang
- Division of Bioindustrial Science, Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
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10
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Yu B, Li H, Chen J, He Z, Sun H, Yang G, Shang C, Wang X, Li C, Chen Y, Hu Y. Extensively expanded murine-induced hepatic stem cells maintain high-efficient hepatic differentiation potential for repopulation of injured livers. Liver Int 2020; 40:2293-2304. [PMID: 32394491 DOI: 10.1111/liv.14509] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 04/10/2020] [Accepted: 05/04/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND & AIM Shortage of donor hepatocytes limits hepatocyte transplantation for clinical application. Induced hepatic stem cells (iHepSCs) have capacities of self-renewal and bipotential differentiations. Here, we investigated whether iHepSCs could be extensively expanded, and whether they could differentiate into sufficient functional hepatocytes as donors for transplantation therapy after their extensive expansions. METHODS Murine extensively expanded iHepSCs (50-55 passages) were induced to differentiate into iHepSC-Heps under a chemically defined condition. iHepSC-Heps were proved for carrying morphological hepatocyte characters and hepatocytic functions including low-density lipoprotein uptake, glycogen storage, CLF secretion, ICG uptake and release, Alb secretion, urea synthesis and metabolism-relative gene expressions respectively. Next, both iHepSCs and iHepSC-Heps were transplanted into Fah-/- mice respectively. Both liver repopulation and alleviation of liver function were compared between two transplantation groups. RESULTS Murine iHepSCs still maintained the capacities of self-renewal and bipotential differentiations after extensive expansion. The efficiency for the functional hepatocyte differentiation from extensively expanded iHepSCs reached to 72.64%. Transplantations of both extensively expanded iHepSCs and iHepSC-Heps resulted in liver engraftment in Fah-/- mice. Survival rate of Fah-/- mice recipients and level of liver repopulation were 50% and 20.32 ± 4.58% respectively in iHepSC-Heps group, while 33% and 10.4 ± 4.3% in iHepSCs group. CONCLUSIONS Extensively expanded iHepSCs can efficiently differentiate into hepatocytes in chemical defined medium. Transplantation of iHepSC-Heps was more effective and more efficient than transplantation of iHepSCs in Fah-/- mice. Our results suggested an innovative system to obtain sufficient hepatocytes through hepatic differentiation of iHepSCs generated by lineage reprogramming.
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Affiliation(s)
- Bing Yu
- Department of Cell Biology, Center for Stem Cell and Medicine, Navy Medical University (Second Military Medical University), Shanghai, P. R. China.,Department of Hepatic Surgery V, Eastern Hepatobiliary Surgery Hospital, Navy Medical University (Second Military Medical University), Shanghai, P.R. China
| | - Hengyu Li
- Department of General Surgery IV, Changhai Hospital, Navy Medical University (Second Military Medical University), Shanghai, P.R. China
| | - Jie Chen
- Department of Hepatobiliary Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-sen University, Guangzhou, P.R. China
| | - Zhiying He
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, P.R. China
| | - Haixiang Sun
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, China
| | - Guangshun Yang
- Department of Hepatic Surgery V, Eastern Hepatobiliary Surgery Hospital, Navy Medical University (Second Military Medical University), Shanghai, P.R. China
| | - Changzhen Shang
- Department of Hepatobiliary Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-sen University, Guangzhou, P.R. China
| | - Xin Wang
- Research Center for Laboratory Animal Science, Inner Mongolia University, Huhhot, P.R. China.,Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA.,Hepatoscience Section, Cell Lab Tech Incorporation, Sunnyvale, CA, USA
| | - Chuanjiang Li
- Division of Hepatobiliopancreatic Surgery, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Yajin Chen
- Department of Hepatobiliary Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-sen University, Guangzhou, P.R. China
| | - Yiping Hu
- Department of Cell Biology, Center for Stem Cell and Medicine, Navy Medical University (Second Military Medical University), Shanghai, P. R. China
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11
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Grimm D, Wehland M, Corydon TJ, Richter P, Prasad B, Bauer J, Egli M, Kopp S, Lebert M, Krüger M. The effects of microgravity on differentiation and cell growth in stem cells and cancer stem cells. Stem Cells Transl Med 2020; 9:882-894. [PMID: 32352658 PMCID: PMC7381804 DOI: 10.1002/sctm.20-0084] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/31/2020] [Accepted: 04/04/2020] [Indexed: 12/12/2022] Open
Abstract
A spaceflight has enormous influence on the health of space voyagers due to the combined effects of microgravity and cosmic radiation. Known effects of microgravity (μg) on cells are changes in differentiation and growth. Considering the commercialization of spaceflight, future space exploration, and long-term manned flights, research focusing on differentiation and growth of stem cells and cancer cells exposed to real (r-) and simulated (s-) μg is of high interest for regenerative medicine and cancer research. In this review, we focus on platforms to study r- and s-μg as well as the impact of μg on cancer stem cells in the field of gastrointestinal cancer, lung cancer, and osteosarcoma. Moreover, we review the current knowledge of different types of stem cells exposed to μg conditions with regard to differentiation and engineering of cartilage, bone, vasculature, heart, skin, and liver constructs.
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Affiliation(s)
- Daniela Grimm
- Department of Microgravity and Translational Regenerative Medicine, Otto von Guericke University, Magdeburg, Germany.,Clinic for Plastic, Aesthetic and Hand Surgery, Otto von Guericke University, Magdeburg, Germany.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Markus Wehland
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto von Guericke University, Magdeburg, Germany
| | - Thomas J Corydon
- Department of Biomedicine, Aarhus University, Aarhus, Denmark.,Department of Ophthalmology, Aarhus University Hospital, Aarhus, Denmark
| | - Peter Richter
- Department of Biology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Binod Prasad
- Department of Biology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Johann Bauer
- Max Planck Institute of Biochemistry, Planegg-Martinsried, Germany
| | - Marcel Egli
- Institute of Medical Engineering, Space Biology Group, Lucerne University of Applied Sciences and Arts, Hergiswil, Switzerland
| | - Sascha Kopp
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto von Guericke University, Magdeburg, Germany
| | - Michael Lebert
- Department of Biology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany.,Space Biology Unlimited SAS, Bordeaux, France
| | - Marcus Krüger
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto von Guericke University, Magdeburg, Germany
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12
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Lei X, Cao Y, Zhang Y, Qian J, Zhao Q, Liu F, Zhang T, Zhou J, Gu Y, Xia G, Duan E. Effect of microgravity on proliferation and differentiation of embryonic stem cells in an automated culturing system during the TZ-1 space mission. Cell Prolif 2018; 51:e12466. [PMID: 29999554 DOI: 10.1111/cpr.12466] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 03/28/2018] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE Despite a great number of studies analysing the effects of microgravity on stem cell proliferation and differentiation, few of them have focused on real-time imaging estimates in space. Herein, we utilized the TZ-1 cargo spacecraft, automatic cell culture equipment and live cell imaging techniques to examine the effects of real microgravity on the proliferation and differentiation of mouse embryonic stem cells (mESCs). MATERIALS AND METHODS Oct4-GFP, Brachyury-GFP mESC and Oct4-GFP mESC-derived EBs were used as experimental samples in the TZ-1 spaceflight mission. These samples were seeded into chambers, cultured in an automatic cell culture device and were transported into space during the TZ-1 mission. Over 15 days of spaceflight, bright field and fluorescent images of cell growth were taken in micrography, and the medium was changed every day. Real-time image data were transferred to the ground for analysis. RESULTS Space microgravity maintains stemness and long-term survival of mESCs, promising 3D aggregate formation. Although microgravity did not significantly prevent the migration of EBs on the ECM substrate, it did prevent terminal differentiation of cells. CONCLUSIONS This study demonstrates that space microgravity might play a potential role in supporting 3D cell growth and maintenance of stemness in embryonic stem cells, while it may negatively affect terminal differentiation.
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Affiliation(s)
- Xiaohua Lei
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yujing Cao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Ying Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Jingjing Qian
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qian Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Fangwu Liu
- Chinese Academy of Sciences, Shanghai Institute of Technical Physics, Shanghai, China
| | - Tao Zhang
- Chinese Academy of Sciences, Shanghai Institute of Technical Physics, Shanghai, China
| | - Jiaxi Zhou
- State Key Laboratory of Experimental Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Institute of Hematology and Blood Diseases Hospital, Tianjin, China
| | - Ying Gu
- Central Sterile Supply Department, 306 Hospital of PLA, Beijing, China
| | - Guoliang Xia
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Enkui Duan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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13
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Sart S, Bejoy J, Li Y. Characterization of 3D pluripotent stem cell aggregates and the impact of their properties on bioprocessing. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.05.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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McKee C, Perez-Cruet M, Chavez F, Chaudhry GR. Simplified three-dimensional culture system for long-term expansion of embryonic stem cells. World J Stem Cells 2015; 7:1064-1077. [PMID: 26328022 PMCID: PMC4550630 DOI: 10.4252/wjsc.v7.i7.1064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 05/21/2015] [Accepted: 06/19/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To devise a simplified and efficient method for long-term culture and maintenance of embryonic stem cells requiring less frequent passaging.
METHODS: Mouse embryonic stem cells (ESCs) labeled with enhanced yellow fluorescent protein were cultured in three-dimensional (3-D) self-assembling scaffolds and compared with traditional two-dimentional (2-D) culture techniques requiring mouse embryonic fibroblast feeder layers or leukemia inhibitory factor. 3-D scaffolds encapsulating ESCs were prepared by mixing ESCs with polyethylene glycol tetra-acrylate (PEG-4-Acr) and thiol-functionalized dextran (Dex-SH). Distribution of ESCs in 3-D was monitored by confocal microscopy. Viability and proliferation of encapsulated cells during long-term culture were determined by propidium iodide as well as direct cell counts and PrestoBlue (PB) assays. Genetic expression of pluripotency markers (Oct4, Nanog, Klf4, and Sox2) in ESCs grown under 2-D and 3-D culture conditions was examined by quantitative real-time polymerase chain reaction. Protein expression of selected stemness markers was determined by two different methods, immunofluorescence staining (Oct4 and Nanog) and western blot analysis (Oct4, Nanog, and Klf4). Pluripotency of 3-D scaffold grown ESCs was analyzed by in vivo teratoma assay and in vitro differentiation via embryoid bodies into cells of all three germ layers.
RESULTS: Self-assembling scaffolds encapsulating ESCs for 3-D culture without the loss of cell viability were prepared by mixing PEG-4-Acr and Dex-SH (1:1 v/v) to a final concentration of 5% (w/v). Scaffold integrity was dependent on the degree of thiol substitution of Dex-SH and cell concentration. Scaffolds prepared using Dex-SH with 7.5% and 33% thiol substitution and incubated in culture medium maintained their integrity for 11 and 13 d without cells and 22 ± 5 d and 37 ± 5 d with cells, respectively. ESCs formed compact colonies, which progressively increased in size over time due to cell proliferation as determined by confocal microscopy and PB staining. 3-D scaffold cultured ESCs expressed significantly higher levels (P < 0.01) of Oct4, Nanog, and Kl4, showing a 2.8, 3.0 and 1.8 fold increase, respectively, in comparison to 2-D grown cells. A similar increase in the protein expression levels of Oct4, Nanog, and Klf4 was observed in 3-D grown ESCs. However, when 3-D cultured ESCs were subsequently passaged in 2-D culture conditions, the level of these pluripotent markers was reduced to normal levels. 3-D grown ESCs produced teratomas and yielded cells of all three germ layers, expressing brachyury (mesoderm), NCAM (ectoderm), and GATA4 (endoderm) markers. Furthermore, these cells differentiated into osteogenic, chondrogenic, myogenic, and neural lineages expressing Col1, Col2, Myog, and Nestin, respectively.
CONCLUSION: This novel 3-D culture system demonstrated long-term maintenance of mouse ESCs without the routine passaging and manipulation necessary for traditional 2-D cell propagation.
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15
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Hu C, Li L. In vitro culture of isolated primary hepatocytes and stem cell-derived hepatocyte-like cells for liver regeneration. Protein Cell 2015; 6:562-74. [PMID: 26088193 PMCID: PMC4506286 DOI: 10.1007/s13238-015-0180-2] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 05/25/2015] [Indexed: 02/07/2023] Open
Abstract
Various liver diseases result in terminal hepatic failure, and liver transplantation, cell transplantation and artificial liver support systems are emerging as effective therapies for severe hepatic disease. However, all of these treatments are limited by organ or cell resources, so developing a sufficient number of functional hepatocytes for liver regeneration is a priority. Liver regeneration is a complex process regulated by growth factors (GFs), cytokines, transcription factors (TFs), hormones, oxidative stress products, metabolic networks, and microRNA. It is well-known that the function of isolated primary hepatocytes is hard to maintain; when cultured in vitro, these cells readily undergo dedifferentiation, causing them to lose hepatocyte function. For this reason, most studies focus on inducing stem cells, such as embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs), hepatic progenitor cells (HPCs), and mesenchymal stem cells (MSCs), to differentiate into hepatocyte-like cells (HLCs) in vitro. In this review, we mainly focus on the nature of the liver regeneration process and discuss how to maintain and enhance in vitro hepatic function of isolated primary hepatocytes or stem cell-derived HLCs for liver regeneration. In this way, hepatocytes or HLCs may be applied for clinical use for the treatment of terminal liver diseases and may prolong the survival time of patients in the near future.
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Affiliation(s)
- Chenxia Hu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, School of Medicine, First Affiliated Hospital, Zhejiang University, Hangzhou, 310006, China
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16
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Kim JH, Jang YJ, An SY, Son J, Lee J, Lee G, Park JY, Park HJ, Hwang DY, Kim JH, Han J. Enhanced Metabolizing Activity of Human ES Cell-Derived Hepatocytes Using a 3D Culture System with Repeated Exposures to Xenobiotics. Toxicol Sci 2015; 147:190-206. [DOI: 10.1093/toxsci/kfv121] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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17
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Zhang S, Liu P, Chen L, Wang Y, Wang Z, Zhang B. The effects of spheroid formation of adipose-derived stem cells in a microgravity bioreactor on stemness properties and therapeutic potential. Biomaterials 2014; 41:15-25. [PMID: 25522961 DOI: 10.1016/j.biomaterials.2014.11.019] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 10/30/2014] [Accepted: 11/07/2014] [Indexed: 02/07/2023]
Abstract
Adipose-derived stem cells (ADSCs) represent a valuable source of stem cells for regenerative medicine, but the loss of their stemness during in vitro expansion remains a major roadblock. We employed a microgravity bioreactor (MB) to develop a method for biomaterial-free-mediated spheroid formation to maintain the stemness properties of ADSCs. ADSCs spontaneously formed three-dimensional spheroids in the MB. Compared with monolayer culture, the expression levels of E-cadherin and pluripotent markers were significantly upregulated in ADSC spheroids. Spheroid-derived ADSCs exhibited increased proliferative ability and colony-forming efficiency. By culturing the spheroid-derived ADSCs in an appropriate induction medium, we found that the multipotency differentiation capacities of ADSCs were significantly improved by spheroid culture in the MB. Furthermore, when ADSCs were administered to mice with carbon tetrachloride-induced acute liver failure, spheroid-derived ADSCs showed more effective potentials to rescue liver failure than ADSCs derived from constant monolayer culture. Our results suggest that spheroid formation of ADSCs in an MB enhances their stemness properties and increases their therapeutic potential. Therefore, spheroid culture in an MB can be an efficient method to maintain stemness properties, without the involvement of any biomaterials for clinical applications of in vitro cultured ADSCs.
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Affiliation(s)
- Shichang Zhang
- Department 4, Institute of Surgery Research, Daping Hospital, Third Military Medical University, State Key Lab of Trauma, Burns and Combined Injury, Chongqing 400042, China
| | - Ping Liu
- Department 4, Institute of Surgery Research, Daping Hospital, Third Military Medical University, State Key Lab of Trauma, Burns and Combined Injury, Chongqing 400042, China
| | - Li Chen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210017, China
| | - Yingjie Wang
- Institute of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Zhengguo Wang
- Department 4, Institute of Surgery Research, Daping Hospital, Third Military Medical University, State Key Lab of Trauma, Burns and Combined Injury, Chongqing 400042, China
| | - Bo Zhang
- Department 4, Institute of Surgery Research, Daping Hospital, Third Military Medical University, State Key Lab of Trauma, Burns and Combined Injury, Chongqing 400042, China.
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18
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Sart S, Agathos SN, Li Y. Process engineering of stem cell metabolism for large scale expansion and differentiation in bioreactors. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2014.01.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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19
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Sasaki K. Large-scale generation of differentiated cells to achieve regenerative medicine. Stem Cell Res Ther 2014; 5:10. [PMID: 24444304 PMCID: PMC4054968 DOI: 10.1186/scrt399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The effects of microgravity and fluid dynamic stress on embryoid bodies generated from pluripotent stem cells induce and direct their differentiation. Using this hydrodynamic effect combined with exogenous factors and three-dimensional culture, a new technique has been developed to produce functional, effective, and safe hepatocytes for transplantation. The evolution of this technique will lead to automated production of a large number of differentiated cells and will significantly contribute to regenerative medicine.
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