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Scodellaro C, Pina RR, Ferreira FC, Sanjuan-Alberte P, Fernandes TG. Unlocking the Potential of Stem Cell Microenvironments In Vitro. Bioengineering (Basel) 2024; 11:289. [PMID: 38534563 DOI: 10.3390/bioengineering11030289] [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: 02/05/2024] [Revised: 03/07/2024] [Accepted: 03/16/2024] [Indexed: 03/28/2024] Open
Abstract
The field of regenerative medicine has recently witnessed groundbreaking advancements that hold immense promise for treating a wide range of diseases and injuries. At the forefront of this revolutionary progress are stem cells. Stem cells typically reside in specialized environments in vivo, known as microenvironments or niches, which play critical roles in regulating stem cell behavior and determining their fate. Therefore, understanding the complex microenvironments that surround stem cells is crucial for advancing treatment options in regenerative medicine and tissue engineering applications. Several research articles have made significant contributions to this field by exploring the interactions between stem cells and their surrounding niches, investigating the influence of biomechanical and biochemical cues, and developing innovative strategies for tissue regeneration. This review highlights the key findings and contributions of these studies, shedding light on the diverse applications that may arise from the understanding of stem cell microenvironments, thus harnessing the power of these microenvironments to transform the landscape of medicine and offer new avenues for regenerative therapies.
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Affiliation(s)
- Chiara Scodellaro
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Raquel R Pina
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Frederico Castelo Ferreira
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Paola Sanjuan-Alberte
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Tiago G Fernandes
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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A Concise Review on Induced Pluripotent Stem Cell-Derived Cardiomyocytes for Personalized Regenerative Medicine. Stem Cell Rev Rep 2020; 17:748-776. [PMID: 33098306 DOI: 10.1007/s12015-020-10061-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2020] [Indexed: 02/07/2023]
Abstract
The induced pluripotent stem cells (iPSCs) are derived from somatic cells by using reprogramming factors such as Oct4, Sox2, Klf4, and c-Myc (OSKM) or Oct4, Sox2, Nanog and Lin28 (OSNL). They resemble embryonic stem cells (ESCs) and have the ability to differentiate into cell lineage of all three germ-layer, including cardiomyocytes (CMs). The CMs can be generated from iPSCs by inducing embryoid bodies (EBs) formation and treatment with activin A, bone morphogenic protein 4 (BMP4), and inhibitors of Wnt signaling. However, these iPSC-derived CMs are a heterogeneous population of cells and require purification and maturation to mimic the in vivo CMs. The matured CMs can be used for various therapeutic purposes in regenerative medicine by cardiomyoplasty or through the development of tissue-engineered cardiac patches. In recent years, significant advancements have been made in the isolation of iPSC and their differentiation, purification, and maturation into clinically usable CMs. Newer small molecules have also been identified to substitute the reprogramming factors for iPSC generation as well as for direct differentiation of somatic cells into CMs without an intermediary pluripotent state. This review provides a concise update on the generation of iPSC-derived CMs and their application in personalized cardiac regenerative medicine. It also discusses the current limitations and challenges in the application of iPSC-derived CMs. Graphical abstract.
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Uesugi K, Nishiyama K, Hirai K, Inoue H, Sakurai Y, Yamada Y, Taniguchi T, Morishima K. Survival Rate of Cells Sent by a Low Mechanical Load Tube Pump: The "Ring Pump". MICROMACHINES 2020; 11:mi11040447. [PMID: 32340401 PMCID: PMC7231339 DOI: 10.3390/mi11040447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/14/2020] [Accepted: 04/17/2020] [Indexed: 11/18/2022]
Abstract
A ring pump (RP) is a useful tool for microchannels and automated cell culturing. We have been developing RPs (a full-press ring pump, FRP; and a mid-press ring pump, MRP). However, damage to cells which were sent by the RP and the MRP was not investigated, and no other studies have compared the damage to cells between RPs and peristaltic pumps (PPs). Therefore, first, we evaluated the damage to cells that were sent by a small size FRP (s-FRP) and small size MRPs (s-MRPs; gap = 25 or 50 μm, respectively). “Small size” means that the s-FRP and the s-MRPs are suitable for microchannel-scale applications. The survival rate of cells sent by the s-MRPs was higher than those sent by the s-FRP, and less damage caused by the former. Second, we compared the survival rate of cells that were sent by a large size FRP (l-FRP), a large size MRP (l-MRP) (gap = 50 μm) and a PP. “Large size” means that the l-FRP and the l-MRP are suitable for automated cell culture system applications. We could not confirm any differences among the cell survival rates. On the other hand, when cells suspended in Dulbecco’s phosphate-buffered saline solution were circulated with the l-MRP (gap = 50 μm) and the PP, we confirmed a difference in cell survival rate, and less damage caused by the former.
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Affiliation(s)
- Kaoru Uesugi
- Department of Mechanical Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan; (K.U.); (K.H.)
- Global Center for Medical Engineering and Informatics, Osaka University, 2-1 Yamada-oka Suita, Osaka 565-0871, Japan
- Department of Mechanical Systems Engineering, Ibaraki University, 4-12-1 Nakanarusawacho, Hitachi, Ibaraki 316-8511, Japan
| | - Keizo Nishiyama
- Aquatech Co., Ltd., 2-1-13 Ono, Daito, Osaka 574-0042, Japan; (K.N.); (H.I.); (Y.S.); (Y.Y.); (T.T.)
- Phonics Center, Osaka University, 2-1 Yamada-oka Suita, Osaka 565-0871, Japan
| | - Koki Hirai
- Department of Mechanical Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan; (K.U.); (K.H.)
| | - Hiroaki Inoue
- Aquatech Co., Ltd., 2-1-13 Ono, Daito, Osaka 574-0042, Japan; (K.N.); (H.I.); (Y.S.); (Y.Y.); (T.T.)
| | - Yoichi Sakurai
- Aquatech Co., Ltd., 2-1-13 Ono, Daito, Osaka 574-0042, Japan; (K.N.); (H.I.); (Y.S.); (Y.Y.); (T.T.)
| | - Yoji Yamada
- Aquatech Co., Ltd., 2-1-13 Ono, Daito, Osaka 574-0042, Japan; (K.N.); (H.I.); (Y.S.); (Y.Y.); (T.T.)
| | - Takashi Taniguchi
- Aquatech Co., Ltd., 2-1-13 Ono, Daito, Osaka 574-0042, Japan; (K.N.); (H.I.); (Y.S.); (Y.Y.); (T.T.)
| | - Keisuke Morishima
- Department of Mechanical Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan; (K.U.); (K.H.)
- Global Center for Medical Engineering and Informatics, Osaka University, 2-1 Yamada-oka Suita, Osaka 565-0871, Japan
- Correspondence: ; Tel.: +81-6-6879-7343
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Odeleye AOO, Baudequin T, Chui CY, Cui Z, Ye H. An additive manufacturing approach to bioreactor design for mesenchymal stem cell culture. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Fish KD, Rubio NR, Stout AJ, Yuen JSK, Kaplan DL. Prospects and challenges for cell-cultured fat as a novel food ingredient. Trends Food Sci Technol 2020; 98:53-67. [PMID: 32123465 PMCID: PMC7051019 DOI: 10.1016/j.tifs.2020.02.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND In vitro meat production has been proposed as a solution to environmental and animal welfare issues associated with animal agriculture. While most academic work on cell-cultured meat has focused on innovations for scalable muscle tissue culture, fat production is an important and often neglected component of this technology. Developing suitable biomanufacturing strategies for adipose tissue from agriculturally relevant animal species may be particularly beneficial due to the potential use of cell-cultured fat as a novel food ingredient. SCOPE AND APPROACH Here we review the relevant studies from areas of meat science, cell biology, tissue engineering, and bioprocess engineering to provide a foundation for the development of in vitro fat production systems. We provide an overview of adipose tissue biology and functionality with respect to meat products, then explore cell lines, bioreactors, and tissue engineering strategies of potential utility for in vitro adipose tissue production for food. Regulation and consumer acceptance are also discussed. KEY FINDINGS AND CONCLUSIONS Existing strategies and paradigms are insufficient to meet the full set of unique needs for a cell-cultured fat manufacturing platform, as tradeoffs are often present between simplicity, scalability, stability, and projected cost. Identification and validation of appropriate cell lines, bioprocess strategies, and tissue engineering techniques must therefore be an iterative process as a deeper understanding of the needs and opportunities for cell-cultured fat develops.
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Affiliation(s)
- Kyle D Fish
- Biomedical Engineering Department, Tissue Engineering Resource Center, Tufts University, 4 Colby St., Medford, MA 02155, United States
| | - Natalie R Rubio
- Biomedical Engineering Department, Tissue Engineering Resource Center, Tufts University, 4 Colby St., Medford, MA 02155, United States
| | - Andrew J Stout
- Biomedical Engineering Department, Tissue Engineering Resource Center, Tufts University, 4 Colby St., Medford, MA 02155, United States
| | - John S K Yuen
- Biomedical Engineering Department, Tissue Engineering Resource Center, Tufts University, 4 Colby St., Medford, MA 02155, United States
| | - David L Kaplan
- Biomedical Engineering Department, Tissue Engineering Resource Center, Tufts University, 4 Colby St., Medford, MA 02155, United States
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Torizal FG, Horiguchi I, Sakai Y. Physiological Microenvironmental Conditions in Different Scalable Culture Systems for Pluripotent Stem Cell Expansion and Differentiation. Open Biomed Eng J 2019. [DOI: 10.2174/1874120701913010041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Human Pluripotent Stem Cells (PSCs) are a valuable cell type that has a wide range of biomedical applications because they can differentiate into many types of adult somatic cell. Numerous studies have examined the clinical applications of PSCs. However, several factors such as bioreactor design, mechanical stress, and the physiological environment have not been optimized. These factors can significantly alter the pluripotency and proliferation properties of the cells, which are important for the mass production of PSCs. Nutritional mass transfer and oxygen transfer must be effectively maintained to obtain a high yield. Various culture systems are currently available for optimum cell propagation by maintaining the physiological conditions necessary for cell cultivation. Each type of culture system using a different configuration with various advantages and disadvantages affecting the mechanical conditions in the bioreactor, such as shear stress. These factors make it difficult to preserve the cellular viability and pluripotency of PSCs. Additional limitations of the culture system for PSCs must also be identified and overcome to maintain the culture conditions and enable large-scale expansion and differentiation of PSCs. This review describes the different physiological conditions in the various culture systems and recent developments in culture technology for PSC expansion and differentiation.
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Human Pluripotent Stem Cells: Applications and Challenges for Regenerative Medicine and Disease Modeling. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2019; 171:189-224. [PMID: 31740987 DOI: 10.1007/10_2019_117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In recent years, human pluripotent stem (hPS) cells have started to emerge as a potential tool with application in fields such as regenerative medicine, disease modeling, and drug screening. In particular, the ability to differentiate human-induced pluripotent stem (hiPS) cells into different cell types and to mimic structures and functions of a specific target organ, resourcing to organoid technology, has introduced novel model systems for disease recapitulation while offering a powerful tool to provide a faster and reproducible approach in the process of drug discovery. All these technologies are expected to improve the overall quality of life of the humankind. Here, we highlight the main applications of hiPS cells and the main challenges associated with the translation of hPS cell derivatives into clinical settings and other biomedical applications, such as the costs of the process and the ability to mimic the complexity of the in vivo systems. Moreover, we focus on the bioprocessing approaches that can be applied towards the production of high numbers of cells as well as their efficient differentiation into the final product and further purification.
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Li L, Shi X, Wang Z, Wang Y, Jiao Z, Zhang P. In situ polymerization of poly(γ-benzyl-l-glutamate) on mesoporous hydroxyapatite with high graft amounts for the direct fabrication of biodegradable cell microcarriers and their osteogenic induction. J Mater Chem B 2018; 6:3315-3330. [PMID: 32254389 DOI: 10.1039/c8tb00232k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Large-scale cell culture for cell expansion in tissue engineering is currently a major focus of research. One method to achieve better cell amplification is to utilize microcarriers. In this study, different amounts of poly(γ-benzyl-l-glutamate) (PBLG) (from 11 wt% to 50 wt%) were grafted on mesoporous hydroxyapatite (MHA) by the in situ ring opening polymerization of γ-benzyl-l-glutamate N-carboxyanhydride (BLG-NCA), and biodegradable and biocompatible PBLG-g-MHA microcarriers were directly fabricated using the oil-in-water (O/W) solvent-evaporation technique for bone tissue engineering. The amount of grafted PBLG could be controlled by adjusting the feed ratio of MHA and BLG-NCA. The relationships between sphere morphology and graft amount or solution concentration were explored. Furthermore, cytological assays were performed to evaluate the biological properties of the PBLG-g-MHA microcarriers. For a solution concentration of 3% (w/v) and PBLG graft amounts of 33 wt% and 50 wt%, the microspheres could be harvested with optimal spherical shapes. In vitro cell culture revealed that the PBLG-g-MHA microspheres had favorable properties for cell proliferation and significantly enhanced the osteogenic differentiation of MC3T3-E1 cells and bone matrix formation.
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Affiliation(s)
- Linlong Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China.
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Kwok CK, Ueda Y, Kadari A, Günther K, Ergün S, Heron A, Schnitzler AC, Rook M, Edenhofer F. Scalable stirred suspension culture for the generation of billions of human induced pluripotent stem cells using single‐use bioreactors. J Tissue Eng Regen Med 2017; 12:e1076-e1087. [DOI: 10.1002/term.2435] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 02/10/2017] [Accepted: 03/30/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Chee Keong Kwok
- Stem Cell and Regenerative Medicine GroupInstitute of Anatomy and Cell Biology II, University of Würzburg Würzburg Germany
| | - Yuichiro Ueda
- Stem Cell and Regenerative Medicine GroupInstitute of Anatomy and Cell Biology II, University of Würzburg Würzburg Germany
| | - Asifiqbal Kadari
- Stem Cell and Regenerative Medicine GroupInstitute of Anatomy and Cell Biology II, University of Würzburg Würzburg Germany
| | - Katharina Günther
- Stem Cell and Regenerative Medicine GroupInstitute of Anatomy and Cell Biology II, University of Würzburg Würzburg Germany
| | - Süleyman Ergün
- Stem Cell and Regenerative Medicine GroupInstitute of Anatomy and Cell Biology II, University of Würzburg Würzburg Germany
| | - Antoine Heron
- The life science business of Merck KGaA Darmstadt Germany
| | | | - Martha Rook
- EMD Millipore Corporation Bedford Massachusetts USA
| | - Frank Edenhofer
- Stem Cell and Regenerative Medicine GroupInstitute of Anatomy and Cell Biology II, University of Würzburg Würzburg Germany
- Institute of Molecular Biology & Center for Molecular Biosciences Innsbruck, Genomics, Stem Cell Biology and Regenerative Medicine Leopold‐Franzens‐University & CMBI Innsbruck Innsbruck Austria
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Microcarrier-based platforms for in vitro expansion and differentiation of human pluripotent stem cells in bioreactor culture systems. J Biotechnol 2016; 234:71-82. [PMID: 27480342 DOI: 10.1016/j.jbiotec.2016.07.023] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 07/26/2016] [Accepted: 07/28/2016] [Indexed: 01/15/2023]
Abstract
Human pluripotent stem cells (hPSC) have attracted a great attention as an unlimited source of cells for cell therapies and other in vitro biomedical applications such as drug screening, toxicology assays and disease modeling. The implementation of scalable culture platforms for the large-scale production of hPSC and their derivatives is mandatory to fulfill the requirement of obtaining large numbers of cells for these applications. Microcarrier technology has been emerging as an effective approach for the large scale ex vivo hPSC expansion and differentiation. This review presents recent achievements in hPSC microcarrier-based culture systems and discusses the crucial aspects that influence the performance of these culture platforms. Recent progress includes addressing chemically-defined culture conditions for manufacturing of hPSC and their derivatives, with the development of xeno-free media and microcarrier coatings to meet good manufacturing practice (GMP) quality requirements. Finally, examples of integrated platforms including hPSC expansion and directed differentiation to specific lineages are also presented in this review.
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Badenes SM, Fernandes TG, Cordeiro CSM, Boucher S, Kuninger D, Vemuri MC, Diogo MM, Cabral JMS. Defined Essential 8™ Medium and Vitronectin Efficiently Support Scalable Xeno-Free Expansion of Human Induced Pluripotent Stem Cells in Stirred Microcarrier Culture Systems. PLoS One 2016; 11:e0151264. [PMID: 26999816 PMCID: PMC4801338 DOI: 10.1371/journal.pone.0151264] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 02/19/2016] [Indexed: 12/24/2022] Open
Abstract
Human induced pluripotent stem (hiPS) cell culture using Essential 8™ xeno-free medium and the defined xeno-free matrix vitronectin was successfully implemented under adherent conditions. This matrix was able to support hiPS cell expansion either in coated plates or on polystyrene-coated microcarriers, while maintaining hiPS cell functionality and pluripotency. Importantly, scale-up of the microcarrier-based system was accomplished using a 50 mL spinner flask, under dynamic conditions. A three-level factorial design experiment was performed to identify optimal conditions in terms of a) initial cell density b) agitation speed, and c) to maximize cell yield in spinner flask cultures. A maximum cell yield of 3.5 is achieved by inoculating 55,000 cells/cm2 of microcarrier surface area and using 44 rpm, which generates a cell density of 1.4x106 cells/mL after 10 days of culture. After dynamic culture, hiPS cells maintained their typical morphology upon re-plating, exhibited pluripotency-associated marker expression as well as tri-lineage differentiation capability, which was verified by inducing their spontaneous differentiation through embryoid body formation, and subsequent downstream differentiation to specific lineages such as neural and cardiac fates was successfully accomplished. In conclusion, a scalable, robust and cost-effective xeno-free culture system was successfully developed and implemented for the scale-up production of hiPS cells.
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Affiliation(s)
- Sara M. Badenes
- Department of Bioengineering, and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Tiago G. Fernandes
- Department of Bioengineering, and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
- * E-mail:
| | - Cláudia S. M. Cordeiro
- Department of Bioengineering, and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Shayne Boucher
- Thermo Fisher Scientific, Cell Biology, Life Sciences Solutions, Frederick, Maryland, United States of America
| | - David Kuninger
- Thermo Fisher Scientific, Cell Biology, Life Sciences Solutions, Frederick, Maryland, United States of America
| | - Mohan C. Vemuri
- Thermo Fisher Scientific, Cell Biology, Life Sciences Solutions, Frederick, Maryland, United States of America
| | - Maria Margarida Diogo
- Thermo Fisher Scientific, Cell Biology, Life Sciences Solutions, Frederick, Maryland, United States of America
| | - Joaquim M. S. Cabral
- Thermo Fisher Scientific, Cell Biology, Life Sciences Solutions, Frederick, Maryland, United States of America
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Desai N, Rambhia P, Gishto A. Human embryonic stem cell cultivation: historical perspective and evolution of xeno-free culture systems. Reprod Biol Endocrinol 2015; 13:9. [PMID: 25890180 PMCID: PMC4351689 DOI: 10.1186/s12958-015-0005-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 02/09/2015] [Indexed: 01/23/2023] Open
Abstract
Human embryonic stem cells (hESC) have emerged as attractive candidates for cell-based therapies that are capable of restoring lost cell and tissue function. These unique cells are able to self-renew indefinitely and have the capacity to differentiate in to all three germ layers (ectoderm, endoderm and mesoderm). Harnessing the power of these pluripotent stem cells could potentially offer new therapeutic treatment options for a variety of medical conditions. Since the initial derivation of hESC lines in 1998, tremendous headway has been made in better understanding stem cell biology and culture requirements for maintenance of pluripotency. The approval of the first clinical trials of hESC cells for treatment of spinal cord injury and macular degeneration in 2010 marked the beginning of a new era in regenerative medicine. Yet it was clearly recognized that the clinical utility of hESC transplantation was still limited by several challenges. One of the most immediate issues has been the exposure of stem cells to animal pathogens, during hESC derivation and during in vitro propagation. Initial culture protocols used co-culture with inactivated mouse fibroblast feeder (MEF) or human feeder layers with fetal bovine serum or alternatively serum replacement proteins to support stem cell proliferation. Most hESC lines currently in use have been exposed to animal products, thus carrying the risk of xeno-transmitted infections and immune reaction. This mini review provides a historic perspective on human embryonic stem cell culture and the evolution of new culture models. We highlight the challenges and advances being made towards the development of xeno-free culture systems suitable for therapeutic applications.
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Affiliation(s)
- Nina Desai
- Department of Obstetrics and Gynecology, Cleveland Clinic, Beachwood, OH, USA.
| | - Pooja Rambhia
- Department of Obstetrics and Gynecology, Cleveland Clinic, Beachwood, OH, USA.
| | - Arsela Gishto
- Department of Obstetrics and Gynecology, Cleveland Clinic, Beachwood, OH, USA.
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Almutawaa W, Rohani L, Rancourt DE. Expansion of Human Induced Pluripotent Stem Cells in Stirred Suspension Bioreactors. Methods Mol Biol 2015; 1502:53-61. [PMID: 26786884 DOI: 10.1007/7651_2015_311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Human induced pluripotent stem cells (hiPSCs) hold great promise as a cell source for therapeutic applications and regenerative medicine. Traditionally, hiPSCs are expanded in two-dimensional static culture as colonies in the presence or absence of feeder cells. However, this expansion procedure is associated with lack of reproducibility and low cell yields. To fulfill the large cell number demand for clinical use, robust large-scale production of these cells under defined conditions is needed. Herein, we describe a scalable, low-cost protocol for expanding hiPSCs as aggregates in a lab-scale bioreactor.
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Affiliation(s)
- Walaa Almutawaa
- Department of Biochemistry and Molecular Biology, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB, Canada, AB T2N 1N4
| | - Leili Rohani
- Department of Biochemistry and Molecular Biology, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB, Canada, AB T2N 1N4
| | - Derrick E Rancourt
- Department of Biochemistry and Molecular Biology, University of Calgary, 3330 Hospital Dr. NW, Calgary, AB, Canada, AB T2N 1N4.
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