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Cervellera CF, Mazziotta C, Di Mauro G, Iaquinta MR, Mazzoni E, Torreggiani E, Tognon M, Martini F, Rotondo JC. Immortalized erythroid cells as a novel frontier for in vitro blood production: current approaches and potential clinical application. Stem Cell Res Ther 2023; 14:139. [PMID: 37226267 PMCID: PMC10210309 DOI: 10.1186/s13287-023-03367-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/05/2023] [Indexed: 05/26/2023] Open
Abstract
BACKGROUND Blood transfusions represent common medical procedures, which provide essential supportive therapy. However, these procedures are notoriously expensive for healthcare services and not without risk. The potential threat of transfusion-related complications, such as the development of pathogenic infections and the occurring of alloimmunization events, alongside the donor's dependence, strongly limits the availability of transfusion units and represents significant concerns in transfusion medicine. Moreover, a further increase in the demand for donated blood and blood transfusion, combined with a reduction in blood donors, is expected as a consequence of the decrease in birth rates and increase in life expectancy in industrialized countries. MAIN BODY An emerging and alternative strategy preferred over blood transfusion is the in vitro production of blood cells from immortalized erythroid cells. The high survival capacity alongside the stable and longest proliferation time of immortalized erythroid cells could allow the generation of a large number of cells over time, which are able to differentiate into blood cells. However, a large-scale, cost-effective production of blood cells is not yet a routine clinical procedure, as being dependent on the optimization of culture conditions of immortalized erythroid cells. CONCLUSION In our review, we provide an overview of the most recent erythroid cell immortalization approaches, while also describing and discussing related advancements of establishing immortalized erythroid cell lines.
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Affiliation(s)
- Christian Felice Cervellera
- Department of Medical Sciences, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy
| | - Chiara Mazziotta
- Department of Medical Sciences, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy
- Department of Medical Sciences, Center for Studies on Gender Medicine, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy
| | - Giulia Di Mauro
- Department of Medical Sciences, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy
| | - Maria Rosa Iaquinta
- Department of Medical Sciences, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy
- Department of Medical Sciences, Center for Studies on Gender Medicine, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy
| | - Elisa Mazzoni
- Department of Chemical, Pharmaceutical and Agricultural Sciences-DOCPAS, University of Ferrara, 44121, Ferrara, Italy
| | - Elena Torreggiani
- Department of Chemical, Pharmaceutical and Agricultural Sciences-DOCPAS, University of Ferrara, 44121, Ferrara, Italy
| | - Mauro Tognon
- Department of Medical Sciences, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy
| | - Fernanda Martini
- Department of Medical Sciences, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy.
- Department of Medical Sciences, Center for Studies on Gender Medicine, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy.
- Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, 44121, Ferrara, Italy.
| | - John Charles Rotondo
- Department of Medical Sciences, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy.
- Department of Medical Sciences, Center for Studies on Gender Medicine, University of Ferrara, 64/b, Fossato di Mortara Street, 44121, Ferrara, Italy.
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Gallego‐Murillo JS, Iacono G, van der Wielen LAM, van den Akker E, von Lindern M, Wahl SA. Expansion and differentiation of ex vivo cultured erythroblasts in scalable stirred bioreactors. Biotechnol Bioeng 2022; 119:3096-3116. [PMID: 35879812 PMCID: PMC9804173 DOI: 10.1002/bit.28193] [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: 02/15/2022] [Revised: 07/14/2022] [Accepted: 07/23/2022] [Indexed: 01/05/2023]
Abstract
Transfusion of donor-derived red blood cells (RBCs) is the most common form of cell therapy. Production of transfusion-ready cultured RBCs (cRBCs) is a promising replacement for the current, fully donor-dependent therapy. A single transfusion unit, however, contains 2 × 1012 RBC, which requires large scale production. Here, we report on the scale-up of cRBC production from static cultures of erythroblasts to 3 L stirred tank bioreactors, and identify the effect of operating conditions on the efficiency of the process. Oxygen requirement of proliferating erythroblasts (0.55-2.01 pg/cell/h) required sparging of air to maintain the dissolved oxygen concentration at the tested setpoint (2.88 mg O2 /L). Erythroblasts could be cultured at dissolved oxygen concentrations as low as 0.7 O2 mg/ml without negative impact on proliferation, viability or differentiation dynamics. Stirring speeds of up to 600 rpm supported erythroblast proliferation, while 1800 rpm led to a transient halt in growth and accelerated differentiation followed by a recovery after 5 days of culture. Erythroblasts differentiated in bioreactors, with final enucleation levels and hemoglobin content similar to parallel cultures under static conditions.
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Affiliation(s)
- Joan Sebastián Gallego‐Murillo
- Sanquin Research and Landsteiner Laboratory, Department of HematopoiesisAmsterdam UMCAmsterdamThe Netherlands,Department of Biotechnology, Faculty of Applied SciencesDelft University of TechnologyDelftThe Netherlands,Present address:
MeatableAlexander Fleminglaan 1,2613AX,DelftThe Netherlands
| | - Giulia Iacono
- Sanquin Research and Landsteiner Laboratory, Department of HematopoiesisAmsterdam UMCAmsterdamThe Netherlands
| | - Luuk A. M. van der Wielen
- Department of Biotechnology, Faculty of Applied SciencesDelft University of TechnologyDelftThe Netherlands,Bernal Institute, Faculty of Science and EngineeringUniversity of LimerickLimerickRepublic of Ireland
| | - Emile van den Akker
- Sanquin Research and Landsteiner Laboratory, Department of HematopoiesisAmsterdam UMCAmsterdamThe Netherlands
| | - Marieke von Lindern
- Sanquin Research and Landsteiner Laboratory, Department of HematopoiesisAmsterdam UMCAmsterdamThe Netherlands
| | - Sebastian Aljoscha Wahl
- Department of Biotechnology, Faculty of Applied SciencesDelft University of TechnologyDelftThe Netherlands,Present address:
Lehrstuhl Für BioverfahrenstechnikFriedrich‐Alexander Universität Erlangen‐NürnbergPaul‐Gordan‐Str. 3,91052,ErlangenGermany
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Lee E, Shah D, Porteus M, Wright JF, Bacchetta R. Design of experiments as a decision tool for cell therapy manufacturing. Cytotherapy 2022; 24:590-596. [PMID: 35227602 DOI: 10.1016/j.jcyt.2022.01.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 01/19/2022] [Accepted: 01/27/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND AIMS Cell therapies are costlier to manufacture than small molecules and protein therapeutics because they require multiple manipulations and are often produced in an autologous manner. Strategies to lower the cost of goods to produce a cell therapy could make a significant impact on its total cost. METHODS Borrowing from the field of bioprocess development, the authors took a design of experiments (DoE)-based approach to understanding the manufacture of a cell therapy product in pre-clinical development, analyzing main cost factors in the production process. The cells used for these studies were autologous CD4+ T lymphocytes gene-edited using CRISPR/Cas9 and recombinant adeno-associated virus (AAV) to restore normal FOXP3 gene expression as a prospective investigational product for patients with immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome. RESULTS Using gene editing efficiency as the response variable, an initial screen was conducted for other variables that could influence the editing frequency. The multiplicity of infection (MOI) of AAV and amount of single guide RNA (sgRNA) were the significant factors used for the optimization step to generate a response contour plot. Cost analysis was done for multiple points in the design space to find cost drivers that could be reduced. For the range of values tested (50 000-750 000 vg/cell AAV and 0.8-4 μg sgRNA), editing with the highest MOI and sgRNA yielded the best gene editing frequency. However, cost analysis showed the optimal solution was gene editing at 193 000 vg/cell AAV and 1.78 μg sgRNA. CONCLUSIONS The authors used DoE to define key factors affecting the gene editing process for a potential investigational therapeutic, providing a novel and faster data-based approach to understanding factors driving complex biological processes. This approach could be applied in process development and aid in achieving more robust strategies for the manufacture of cellular therapeutics.
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Affiliation(s)
- Esmond Lee
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA.
| | | | - Matthew Porteus
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA; Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA; Center for Definitive and Curative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - J Fraser Wright
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA; Center for Definitive and Curative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Rosa Bacchetta
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA; Center for Definitive and Curative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA.
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Clever Experimental Designs: Shortcuts for Better iPSC Differentiation. Cells 2021; 10:cells10123540. [PMID: 34944048 PMCID: PMC8700474 DOI: 10.3390/cells10123540] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 12/18/2022] Open
Abstract
For practical use of pluripotent stem cells (PSCs) for disease modelling, drug screening, and regenerative medicine, the cell differentiation process needs to be properly refined to generate end products with consistent and high quality. To construct and optimize a robust cell-induction process, a myriad of cell culture conditions should be considered. In contrast to inefficient brute-force screening, statistical design of experiments (DOE) approaches, such as factorial design, orthogonal array design, response surface methodology (RSM), definitive screening design (DSD), and mixture design, enable efficient and strategic screening of conditions in smaller experimental runs through multifactorial screening and/or quantitative modeling. Although DOE has become routinely utilized in the bioengineering and pharmaceutical fields, the imminent need of more detailed cell-lineage specification, complex organoid construction, and a stable supply of qualified cell-derived material requires expedition of DOE utilization in stem cell bioprocessing. This review summarizes DOE-based cell culture optimizations of PSCs, mesenchymal stem cells (MSCs), hematopoietic stem cells (HSCs), and Chinese hamster ovary (CHO) cells, which guide effective research and development of PSC-derived materials for academic and industrial applications.
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Kronstein-Wiedemann R, Thiel J, Tonn T. Blood Pharming – eine realistische Option? TRANSFUSIONSMEDIZIN 2021. [DOI: 10.1055/a-1342-0820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
ZusammenfassungDie Bluttransfusion ist ein wesentlicher und unersetzlicher Teil der modernen Medizin. Jedoch stellt vor allem bei Patienten mit sehr seltenen Blutgruppenkonstellationen der Mangel an Blutprodukten auch heute noch ein wichtiges Gesundheitsproblem weltweit dar. Um diesem Problem entgegenzutreten, versucht man seit einiger Zeit künstlich rote Blutzellen zu generieren. Diese haben potenzielle Vorteile gegenüber Spenderblut, wie z. B. ein verringertes Risiko für die Übertragung von Infektionskrankheiten. Diese Übersicht fasst die aktuellen Entwicklungen über den Prozess der Erythropoese, die Expansionsstrategien der erythrozytären Zellen, der verschiedenen Quellen für ex vivo expandierte Erythrozyten, die Hürden für die klinische Anwendung und die zukünftigen Möglichkeiten der Anwendung zusammen.
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Affiliation(s)
- Romy Kronstein-Wiedemann
- DRK-Blutspendedienst Nord-Ost gGmbH/Institut Dresden
- Experimentelle Transfusionsmedizin, Medizinische Fakultät Universitätsklinikum Carl Gustav Carus
| | - Jessica Thiel
- DRK-Blutspendedienst Nord-Ost gGmbH/Institut Dresden
- Experimentelle Transfusionsmedizin, Medizinische Fakultät Universitätsklinikum Carl Gustav Carus
| | - Torsten Tonn
- DRK-Blutspendedienst Nord-Ost gGmbH/Institut Dresden
- Experimentelle Transfusionsmedizin, Medizinische Fakultät Universitätsklinikum Carl Gustav Carus
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Kasemiire A, Avohou HT, De Bleye C, Sacre PY, Dumont E, Hubert P, Ziemons E. Design of experiments and design space approaches in the pharmaceutical bioprocess optimization. Eur J Pharm Biopharm 2021; 166:144-154. [PMID: 34147574 DOI: 10.1016/j.ejpb.2021.06.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 01/04/2023]
Abstract
The optimization of pharmaceutical bioprocesses suffers from several challenges like complexity, upscaling costs, regulatory approval, leading to the risk of delivering substandard drugs to patients. Bioprocess is very complex and requires the evaluation of multiple components that need to be monitored and controlled in order to attain the desired state when the process ends. Statistical design of experiments (DoE) is a powerful tool for optimizing bioprocesses because it plays a critical role in the quality by design strategy as it is useful in exploring the experimental domain and providing statistics of interest that enable scientists to understand the impact of critical process parameters on the critical quality attributes. This review summarizes selected publications in which DoE methodology was used to optimize bioprocess. The main objective of the critical review was to clearly demonstrate potential benefits of using the DoE and design space methodologies in bioprocess optimization.
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Affiliation(s)
- Alice Kasemiire
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium.
| | - Hermane T Avohou
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Charlotte De Bleye
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Pierre-Yves Sacre
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Elodie Dumont
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Philippe Hubert
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Eric Ziemons
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
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Lanza F, Seghatchian J. Trends and targets of various types of stem cell derived transfusable RBC substitution therapy: Obstacles that need to be converted to opportunity. Transfus Apher Sci 2020; 59:102941. [PMID: 32958397 PMCID: PMC7474814 DOI: 10.1016/j.transci.2020.102941] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A shortage of blood during the pandemic outbreak of COVID-19 is a typical example in which the maintenance of a safe and adequate blood supply becomes difficult and highly demanding. So far, human RBCs have been produced in vitro using diverse sources: hematopoietic stem cells (SCs), embryonic SCs and induced pluripotent SCs. The existing, even safest core of conventional cellular bioproducts destined for transfusion have some shortcoming in respects to: donor -dependency variability in terms of hematological /immunological and process/ storage period issues. SCs-derived transfusable RBC bioproducts, as one blood group type for all, were highly complex to work out. Moreover, the strategies for their successful production are often dependent upon the right selection of starting source materials and the composition and the stability of the right expansion media and the strict compliance to GMP regulatory processes. In this mini-review we highlight some model studies, which showed that the efficiency and the functionality of RBCs that could be produced by the various types of SCs, in relation to the in-vitro culture procedures are such that they may, potentially, be used at an industrial level. However, all cultured products do not have an unlimited life due to the critical metabolic pathways or the metabolites produced. New bioreactors are needed to remove these shortcomings and the development of a new mouse model is required. Modern clinical trials based on the employment of regenerative medicine approaches in combination with novel large-scale bioengineering tools, could overcome the current obstacles in artificial RBC substitution, possibly allowing an efficient RBC industrial production.
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Affiliation(s)
- Francesco Lanza
- Romagna Transplant Network, Hematology Unit, Ravenna Hospital & University of Ferrara-Italy, Via Randi 5, Ravenna, Italy.
| | - Jerard Seghatchian
- International Consultancy in Strategic Safety/Quality Innovations of Blood-Derived Bioproducts and Quality Audit/ Inspection, London, England, UK.
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Seghatchian J. The secrets of human stem cell-derived transfusable RBC for targeted large-scale production and clinical applications: A fresh look into what we need most and lessons to be learned. Transfus Apher Sci 2020; 59:102862. [PMID: 32620410 PMCID: PMC7320703 DOI: 10.1016/j.transci.2020.102862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Blood transfusion, using the safest conventional blood bioproducts, is an irreplaceable part of substitution therapy. It is considered the most essential supportive clinical intervention aimed to restore the health of patients in need. Nevertheless, numerous unresolved problems are still associated with current blood substitution therapy. To alleviate our dependency on blood donors, many investigators have been focusing on the quest for stem cell-derived blood cells in line with major developments in the field of regenerative medicine. The main objective is to provide a safe and highly standardized universal cultured red cell concentrate [CRBC] for all clinical applications, regardless of blood groups. Currently, we are close to overcoming some of the main obstacles in culturing cells. This concise report is a prelude to the immortalized cell lines that are ready for in vivo clinical trials. It is only through the sharing of experimental ideas and knowledge-based strategies that we will be able to achieve such an enormous task and better understand ‘’the one for all concept’’ of CRBCs and their universal usage in all clinical settings.
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Affiliation(s)
- Jerard Seghatchian
- International Consultancy in Strategic Advices on Safety Improvements of Blood-Derived Bioproducts and Suppliers Quality Audit / Inspection, London, UK.
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Kim SH, Lee EM, Han SY, Choi HS, Ryu KY, Baek EJ. Improvement of Red Blood Cell MaturationIn Vitroby Serum-Free Medium Optimization. Tissue Eng Part C Methods 2019; 25:232-242. [DOI: 10.1089/ten.tec.2019.0023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Seo Hui Kim
- Department of Translational Medicine, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, Republic of Korea
| | - Eun Mi Lee
- Department of Translational Medicine, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, Republic of Korea
| | - So Yeon Han
- Department of Translational Medicine, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, Republic of Korea
| | - Hye Sook Choi
- Department of Laboratory Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Ki Young Ryu
- Departmemt of Obstetrics and Gynecology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Eun Jung Baek
- Department of Translational Medicine, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, Republic of Korea
- Department of Laboratory Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea
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Christaki EE, Politou M, Antonelou M, Athanasopoulos A, Simantirakis E, Seghatchian J, Vassilopoulos G. Ex vivo generation of transfusable red blood cells from various stem cell sources: A concise revisit of where we are now. Transfus Apher Sci 2019; 58:108-112. [DOI: 10.1016/j.transci.2018.12.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Lee E, Sivalingam J, Lim ZR, Chia G, Shi LG, Roberts M, Loh YH, Reuveny S, Oh SKW. Review: In vitro generation of red blood cells for transfusion medicine: Progress, prospects and challenges. Biotechnol Adv 2018; 36:2118-2128. [PMID: 30273713 DOI: 10.1016/j.biotechadv.2018.09.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 09/19/2018] [Accepted: 09/27/2018] [Indexed: 02/07/2023]
Abstract
In vitro generation of red blood cells (RBCs) has the potential to circumvent the shortfalls in global demand for blood for transfusion applications. The conventional approach for RBC generation has been from differentiation of hematopoietic stem cells (HSCs) derived from cord blood, adult bone marrow or peripheral blood. More recently, RBCs have been generated from human induced pluripotent stem cells (hiPSCs) as well as from immortalized adult erythroid progenitors. In this review, we highlight the recent advances to RBC generation from these different approaches and discuss the challenges and new strategies that can potentially make large-scale in vitro generation of RBCs a feasible approach.
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Affiliation(s)
- Esmond Lee
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Republic of Singapore; Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Palo Alto, CA 94305, USA.
| | - Jaichandran Sivalingam
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Republic of Singapore.
| | - Zhong Ri Lim
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Republic of Singapore
| | - Gloryn Chia
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Republic of Singapore
| | - Low Gin Shi
- Brilliant Research Pte. Ltd, Singapore 139955, Republic of Singapore
| | - Mackenna Roberts
- Oxford-University College London Centre for the Advancement of Sustainable Medical Innovation, University of Oxford, UK
| | - Yuin-Han Loh
- Institute of Molecular and Cellular Biology, Agency for Science, Technology and Research, Singapore 138668, Republic of Singapore; Department of Biological Sciences, National University of Singapore, Singapore 117543, Republic of Singapore
| | - Shaul Reuveny
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Republic of Singapore
| | - Steve Kah-Weng Oh
- Stem Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Republic of Singapore
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