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Cortesi V, Cavallaro G, Raffaeli G, Ghirardello S, Mosca F, Klei TR, Fustolo-Gunnink S, Stanworth S, New HV, Deschmann E, Lopriore E. Why might cord blood be a better source of platelets for transfusion to neonates? BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2024; 22:292-302. [PMID: 38557319 PMCID: PMC11251836 DOI: 10.2450/bloodtransfus.566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 09/04/2023] [Indexed: 04/04/2024]
Abstract
Thrombocytopenia (defined as a platelet count <150×109/L) is a common condition in preterm neonates and may occur in 18-35% of all infants admitted to the Neonatal Intensive Care Unit (NICU). Neonatal platelet functionality in terms of reactivity is often described as reduced compared to adults, even in healthy, term neonates. However, this platelet "hyporeactivity" does not correspond to a global functional impairment of the normal delicately balanced neonatal hemostatic system. The extent to which neonatal thrombocytopenia and platelet hyporeactivity contribute to the bleeding risk in preterm neonates remains unknown. Prophylactic platelet transfusions are often administered to them to reduce the risk of bleeding. However, recent literature indicates that adopting a higher platelet transfusion threshold than a lower one results in significantly higher death rates or major bleeding and can be harmful. Although the mechanism by which this occurs is not entirely clear, a mismatch between adult transfused platelets and the neonatal hemostatic system, as well as volume overload, are speculated to be potentially involved. Therefore, future research should consider novel transfusion products that may be more suitable for premature neonates. Blood products derived from umbilical cord blood (UCB) are promising, as they might perfectly match neonatal blood features. Here, we discuss the current knowledge about UCB-derived products, focusing on UCB-derived platelet concentrates and their potential for future clinical application. We will discuss how they may overcome the potential risks of transfusing adult-derived platelets to premature infants while maintaining efficacy.
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Affiliation(s)
- Valeria Cortesi
- Neonatal Intensive Care Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Giacomo Cavallaro
- Neonatal Intensive Care Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Genny Raffaeli
- Neonatal Intensive Care Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Stefano Ghirardello
- Neonatal Intensive Care Unit, Fondazione IRCCS Policlinico S. Matteo, Pavia, Italy
| | - Fabio Mosca
- Neonatal Intensive Care Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Thomas R.L. Klei
- Department of Product and Process Development, Sanquin Blood Supply, Amsterdam, the Netherlands
| | - Suzanne Fustolo-Gunnink
- Sanquin Blood Supply Foundation, Amsterdam, the Netherlands
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, the Netherlands
- Department of Pediatric Hematology, Emma Children’s Hospital, Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, the Netherlands
| | - Simon Stanworth
- Department of Hematology, Oxford University Hospitals, NHS Foundation Trust, Oxford, United Kingdom
| | - Helen V. New
- Clinical Directorate, NHS Blood and Transplant, London, United Kingdom
| | - Emöke Deschmann
- Department of Neonatology, Karolinska University Hospital and Karolinska Institute, Stockholm, Sweden
| | - Enrico Lopriore
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, the Netherlands
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2
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Kweon S, Kim S, Choi HS, Jo K, Park JM, Baek EJ. Current status of platelet manufacturing in 3D or bioreactors. Biotechnol Prog 2023; 39:e3364. [PMID: 37294031 DOI: 10.1002/btpr.3364] [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: 01/12/2023] [Revised: 05/09/2023] [Accepted: 05/09/2023] [Indexed: 06/10/2023]
Abstract
Blood shortages for transfusion are global issues of grave concern. As in vitro manufactured platelets are promising substitutes for blood donation, recent research has shown progresses including different cell sources, different bioreactors, and three-dimensional materials. The first-in-human clinical trial of cultured platelets using induced pluripotent stem cell-derived platelets began in Japan and demonstrated its quality, safety, and efficacy. A novel bioreactor with fluid motion for platelet production has been reported. Herein, we discuss various cell sources for blood cell production, recent advances in manufacturing processes, and clinical applications of cultured blood.
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Affiliation(s)
- Soonho Kweon
- Department of Research and Development, ArtBlood Inc, Seoul, Republic of Korea
| | - Suyeon Kim
- Department of Research and Development, ArtBlood Inc, Seoul, Republic of Korea
| | - Hye Sook Choi
- Department of Research and Development, ArtBlood Inc, Seoul, Republic of Korea
| | - Kyeongwon Jo
- Department of Research and Development, ArtBlood Inc, Seoul, Republic of Korea
| | - Ju Mi Park
- Department of Research and Development, ArtBlood Inc, Seoul, Republic of Korea
| | - Eun Jung Baek
- Department of Research and Development, ArtBlood Inc, Seoul, Republic of Korea
- Department of Translational Medicine, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, Republic of Korea
- Department of Laboratory Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
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3
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Qin J, Zhang J, Jiang J, Zhang B, Li J, Lin X, Wang S, Zhu M, Fan Z, Lv Y, He L, Chen L, Yue W, Li Y, Pei X. Direct chemical reprogramming of human cord blood erythroblasts to induced megakaryocytes that produce platelets. Cell Stem Cell 2022; 29:1229-1245.e7. [PMID: 35931032 DOI: 10.1016/j.stem.2022.07.004] [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: 06/03/2021] [Revised: 06/08/2022] [Accepted: 07/13/2022] [Indexed: 11/19/2022]
Abstract
Reprogramming somatic cells into megakaryocytes (MKs) would provide a promising source of platelets. However, using a pharmacological approach to generate human MKs from somatic cells remains an unmet challenge. Here, we report that a combination of four small molecules (4M) successfully converted human cord blood erythroblasts (EBs) into induced MKs (iMKs). The iMKs could produce proplatelets and release functional platelets, functionally resembling natural MKs. Reprogramming trajectory analysis revealed an efficient cell fate conversion of EBs into iMKs by 4M via the intermediate state of bipotent precursors. 4M induced chromatin remodeling and drove the transition of transcription factor (TF) regulatory network from key erythroid TFs to essential TFs for megakaryopoiesis, including FLI1 and MEIS1. These results demonstrate that the chemical reprogramming of cord blood EBs into iMKs provides a simple and efficient approach to generate MKs and platelets for clinical applications.
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Affiliation(s)
- Jinhua Qin
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China
| | - Jian Zhang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Jianan Jiang
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Bowen Zhang
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China
| | - Jisheng Li
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Xiaosong Lin
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Sihan Wang
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China
| | - Meiqi Zhu
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Zeng Fan
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China
| | - Yang Lv
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China
| | - Lijuan He
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China; Institute of Health Service and Transfusion Medicine, Beijing 100850, China
| | - Lin Chen
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China
| | - Wen Yue
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China
| | - Yanhua Li
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China.
| | - Xuetao Pei
- Stem Cell and Regenerative Medicine Lab, Beijing Institute of Radiation Medicine, Beijing 100850, China; South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou 510005, China.
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4
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Ricolinostat promotes the generation of megakaryocyte progenitors from human hematopoietic stem and progenitor cells. Stem Cell Res Ther 2022; 13:54. [PMID: 35123563 PMCID: PMC8817546 DOI: 10.1186/s13287-022-02722-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 01/13/2022] [Indexed: 11/13/2022] Open
Abstract
Background Ex vivo production of induced megakaryocytes (MKs) and platelets from stem cells is an alternative approach for supplying transfusible platelets. However, it is difficult to generate large numbers of MKs and platelets from hematopoietic stem cells and progenitor cells (HSPCs).
Methods To optimize the differentiation efficiency of megakaryocytic cells from HSPCs, we first employed a platelet factor 4 (PF4)-promoter reporter and high-throughput screening strategy to screen for small molecules. We also investigated the effects and possible mechanisms of candidate small molecules on megakaryocytic differentiation of human HSPCs. Results The small molecule Ricolinostat remarkably promoted the expression of PF4-promoter reporter in the megakaryocytic cell line. Notably, Ricolinostat significantly enhanced the cell fate commitment of MK progenitors (MkPs) from cord blood HSPCs and promoted the proliferation of MkPs based on cell surface marker detection, colony-forming unit-MK assay, and quantitative real-time PCR analyses. MkPs generated from Ricolinostat-induced HSPCs differentiated into mature MKs and platelets. Mechanistically, we found that Ricolinostat enhanced MkP fate mainly by inhibiting the secretion of IL-8 and decreasing the expression of the IL-8 receptor CXCR2. Conclusion The addition of Ricolinostat to the culture medium promoted MkP differentiation from HSPCs and enhanced the proliferation of MkPs mainly by suppressing the IL-8/CXCR2 pathway. Our results can help the development of manufacturing protocols for the efficient generation of MKs and platelets from stem cells in vitro. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-02722-5.
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Xie X, Yao H, Han X, Yue W, Pei X. Therapeutic use of red blood cells and platelets derived from human cord blood stem cells. Stem Cells Transl Med 2021; 10 Suppl 2:S48-S53. [PMID: 34724719 PMCID: PMC8560193 DOI: 10.1002/sctm.20-0517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 05/15/2021] [Accepted: 06/06/2021] [Indexed: 12/19/2022] Open
Abstract
Red blood cells (RBCs) and platelets derived from stem cells are possible solutions to the increasing demand for blood transfusion. Based on the availability of stem cells, their relatively defined differentiation mechanisms, and the massive exploration of induction systems, the generation of RBCs or platelets in vitro from cord blood hematopoietic stem/progenitor cells (CB-HSPCs) has potential for clinical applications. However, information on the clinical translation of stem cell-derived RBCs and platelets in the literature and at the ClinicalTrials.gov website is very limited. The only clinical trial on cultured RBCs, which aimed to assess the lifespan of RBCs cultured in vivo, was reported by Luc Douay and colleagues. Of note, the cultured RBCs they used were derived from autologous peripheral blood HSPCs, and no cultured platelets have been applied clinically to date. However, CB-HSPC-derived megakaryocytes, platelet precursors, have been used in the treatment of thrombocytopenia. A successful phase I trial was reported, followed by phase II and III clinical trials conducted in China. In this review, the gap between the many basic studies and limited clinical trials on stem cell-derived RBCs and platelets is summarized. The possible reasons and solutions for this gap are discussed. Further technological improvements for blood cell expansion and maturation ex vivo and the establishment of biological standards for stem cell derivatives might help to facilitate the therapeutic applications of cultured RBCs and platelets derived from CB-HSPCs in the near future.
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Affiliation(s)
- Xiaoyan Xie
- Stem Cells and Regenerative Medicine LabInstitute of Health Service and Transfusion MedicineBeijingPeople's Republic of China
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouPeople's Republic of China
| | - Hailei Yao
- Stem Cells and Regenerative Medicine LabInstitute of Health Service and Transfusion MedicineBeijingPeople's Republic of China
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouPeople's Republic of China
| | - Xiaoyan Han
- National Institutes for Food and Drug ControlBeijingPeople's Republic of China
| | - Wen Yue
- Stem Cells and Regenerative Medicine LabInstitute of Health Service and Transfusion MedicineBeijingPeople's Republic of China
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouPeople's Republic of China
| | - Xuetao Pei
- Stem Cells and Regenerative Medicine LabInstitute of Health Service and Transfusion MedicineBeijingPeople's Republic of China
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouPeople's Republic of China
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6
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Process analysis of pluripotent stem cell differentiation to megakaryocytes to make platelets applying European GMP. NPJ Regen Med 2021; 6:27. [PMID: 34040001 PMCID: PMC8155004 DOI: 10.1038/s41536-021-00138-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/20/2021] [Indexed: 12/27/2022] Open
Abstract
Quality, traceability and reproducibility are crucial factors in the reliable manufacture of cellular therapeutics, as part of the overall framework of Good Manufacturing Practice (GMP). As more and more cellular therapeutics progress towards the clinic and research protocols are adapted to comply with GMP standards, guidelines for safe and efficient adaptation have become increasingly relevant. In this paper, we describe the process analysis of megakaryocyte manufacture from induced pluripotent stem cells with a view to manufacturing in vitro platelets to European GMP for transfusion. This process analysis has allowed us an overview of the entire manufacturing process, enabling us to pinpoint the cause and severity of critical risks. Risk mitigations were then proposed for each risk, designed to be GMP compliant. These mitigations will be key in advancing this iPS-derived therapy towards the clinic and have broad applicability to other iPS-derived cellular therapeutics, many of which are currently advancing towards GMP-compliance. Taking these factors into account during protocol design could potentially save time and money, expediting the advent of safe, novel therapeutics from stem cells.
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7
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Catelli LF, Saad STO. Ex Vivo Manufacture of Megakaryocytes and Platelets from Stem Cells: Recent Advances Toward Transfusion in Humans. Stem Cells Dev 2021; 30:351-362. [PMID: 33622080 DOI: 10.1089/scd.2020.0185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The generation of ex vivo functional megakaryocytes (MK) and platelets is an important issue in transfusion medicine as donor dependence implies in limitations, such as shortage of eligible volunteers. Indeed, platelet transfusion is still a procedure that saves the lives of patients with defective platelet production. Recent technological development has enabled the isolation and expansion of stem cells that can be used as a source for the production of functional platelets for transfusion. In this review, we discuss recent approaches of in vitro or ex vivo production of MK and platelets, suggesting that, in the near future, donor-independent sources may become a possibility. The feasibility of using these cells in the clinic may be safer, and in vitro manipulation could generate universally compatible products, solving problems related to platelet refractoriness. However, functionality and survival testing of these products in human beings are scarce; therefore, additional studies are needed to consolidate this purpose.
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Affiliation(s)
- Lucas Ferioli Catelli
- Hematology and Transfusion Medicine Center, University of Campinas, Campinas, São Paulo, Brazil
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8
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Abstract
Current research in the field of transfusion medicine is focused on developing innovative approaches to generate populations of functional megakaryocytes (MKs) ex vivo. This may open perspectives to establish alternative therapies for donor platelet transfusion in the management of thrombocytopenic patients and pave the way for novel regenerative approaches. Efficient cryopreservation techniques can provide the opportunity for long-term storage and accumulation of necessary amounts of MKs in a ready-to-use manner. However, in this case, besides the viability, it is crucial to consider the recovery of functional MK properties after the impact of freezing. In this chapter, the possibility to cryopreserve iPSC-derived MKs is described. In particular, the methods for a comprehensive analysis of phenotypic and functional features of MKs after cryopreservation are proposed. The use of cryopreserved in vitro-produced MKs may benefit to the field of transfusion medicine to overcome the lack of sufficient blood donors.
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9
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Zhang B, Wu X, Zi G, He L, Wang S, Chen L, Fan Z, Nan X, Xi J, Yue W, Wang L, Wang L, Hao J, Pei X, Li Y. Large-scale generation of megakaryocytes from human embryonic stem cells using transgene-free and stepwise defined suspension culture conditions. Cell Prolif 2021; 54:e13002. [PMID: 33615584 PMCID: PMC8016648 DOI: 10.1111/cpr.13002] [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: 11/04/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 12/11/2022] Open
Abstract
Objectives Ex vivo engineered production of megakaryocytes (MKs) and platelets (PLTs) from human pluripotent stem cells is an alternative approach to solve shortage of donor‐donated PLTs in clinics and to provide induced PLTs for transfusion. However, low production yields are observed and the generation of clinically applicable MKs and PLTs from human pluripotent stem cells without genetic modifications still needs to be improved. Materials and Methods We defined an optimal, stepwise and completely xeno‐free culture protocol for the generation of MKs from human embryonic stem cells (hESCs). To generate MKs from hESCs on a large scale, we improved the monolayer induction manner to define three‐dimensional (3D) and sphere‐like differentiation systems for MKs by using a special polystyrene CellSTACK culture chamber. Results The 3D manufacturing system could efficiently generate large numbers of MKs from hESCs within 16‐18 days of continuous culturing. Each CellSTACK culture chamber could collect on an average 3.4 × 108 CD41+ MKs after a three‐stage orderly induction process. MKs obtained from hESCs via 3D induction showed significant secretion of IL‐8, thrombospondin‐1 and MMP9. The induced cells derived from hESCs in our culture system were shown to have the characteristics of MKs as well as the function to form proPLTs and release PLTs. Furthermore, we generated clinically applicable MKs from clinical‐grade hESC lines and confirmed the biosafety of these cells. Conclusions We developed a simple, stepwise, 3D and completely xeno‐free/feeder‐free/transgene‐free induction system for the generation of MKs from hESCs. hESC‐derived MKs were shown to have typical MK characteristics and PLT formation ability. This study further enhances the clinical applications of MKs or PLTs derived from pluripotent stem cells.
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Affiliation(s)
- Bowen Zhang
- Experimental Hematology and Biochemistry Lab, Beijing Institute of Radiation Medicine, Beijing, China.,South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China
| | - Xumin Wu
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China
| | - Guicheng Zi
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China
| | - Lijuan He
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Sihan Wang
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Lin Chen
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Zeng Fan
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Xue Nan
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Jiafei Xi
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Wen Yue
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Lei Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,National Stem Cell Resource Center, Chinese Academy of Sciences, Beijing, China
| | - Liu Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,National Stem Cell Resource Center, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Science, Beijing, China
| | - Jie Hao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,National Stem Cell Resource Center, Chinese Academy of Sciences, Beijing, China
| | - Xuetao Pei
- South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China.,Stem Cell and Regenerative Medicine Lab, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Yanhua Li
- Experimental Hematology and Biochemistry Lab, Beijing Institute of Radiation Medicine, Beijing, China.,South China Research Center for Stem Cell & Regenerative Medicine, SCIB, Guangzhou, China
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10
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Generation and manipulation of human iPSC-derived platelets. Cell Mol Life Sci 2021; 78:3385-3401. [PMID: 33439272 PMCID: PMC7804213 DOI: 10.1007/s00018-020-03749-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/01/2020] [Accepted: 12/23/2020] [Indexed: 12/17/2022]
Abstract
The discovery of iPSCs has led to the ex vivo production of differentiated cells for regenerative medicine. In the case of transfusion products, the derivation of platelets from iPSCs is expected to complement our current blood-donor supplied transfusion system through donor-independent production with complete pathogen-free assurance. This derivation can also overcome alloimmune platelet transfusion refractoriness by resulting in autologous, HLA-homologous or HLA-deficient products. Several developments were necessary to produce a massive number of platelets required for a single transfusion. First, expandable megakaryocytes were established from iPSCs through transgene expression. Second, a turbulent-type bioreactor with improved platelet yield and quality was developed. Third, novel drugs that enabled efficient feeder cell-free conditions were developed. Fourth, the platelet-containing suspension was purified and resuspended in an appropriate buffer. Finally, the platelet product needed to be assured for competency and safety including non-tumorigenicity through in vitro and in vivo preclinical tests. Based on these advancements, a clinical trial has started. The generation of human iPSC-derived platelets could evolve transfusion medicine to the next stage and assure a ubiquitous, safe supply of platelet products. Further, considering the feasibility of gene manipulations in iPSCs, other platelet products may bring forth novel therapeutic measures.
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11
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Martínez-Botía P, Acebes-Huerta A, Seghatchian J, Gutiérrez L. On the Quest for In Vitro Platelet Production by Re-Tailoring the Concepts of Megakaryocyte Differentiation. ACTA ACUST UNITED AC 2020; 56:medicina56120671. [PMID: 33287459 PMCID: PMC7761839 DOI: 10.3390/medicina56120671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 12/14/2022]
Abstract
The demand of platelet transfusions is steadily growing worldwide, inter-donor variation, donor dependency, or storability/viability being the main contributing factors to the current global, donor-dependent platelet concentrate shortage concern. In vitro platelet production has been proposed as a plausible alternative to cover, at least partially, the increasing demand. However, in practice, such a logical production strategy does not lack complexity, and hence, efforts are focused internationally on developing large scale industrial methods and technologies to provide efficient, viable, and functional platelet production. This would allow obtaining not only sufficient numbers of platelets but also functional ones fit for all clinical purposes and civil scenarios. In this review, we cover the evolution around the in vitro culture and differentiation of megakaryocytes into platelets, the progress made thus far to bring the culture concept from basic research towards good manufacturing practices certified production, and subsequent clinical trial studies. However, little is known about how these in vitro products should be stored or whether any safety measure should be implemented (e.g., pathogen reduction technology), as well as their quality assessment (how to isolate platelets from the rest of the culture cells, debris, microvesicles, or what their molecular and functional profile is). Importantly, we highlight how the scientific community has overcome the old dogmas and how the new perspectives influence the future of platelet-based therapy for transfusion purposes.
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Affiliation(s)
- Patricia Martínez-Botía
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain; (P.M.-B.); (A.A.-H.)
- Department of Medicine, University of Oviedo, 33003 Oviedo, Spain
| | - Andrea Acebes-Huerta
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain; (P.M.-B.); (A.A.-H.)
| | - Jerard Seghatchian
- International Consultancy in Strategic Safety/Quality Improvements of Blood-Derived Bioproducts and Suppliers Quality Audit/Inspection, London NW3 3AA, UK;
| | - Laura Gutiérrez
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain; (P.M.-B.); (A.A.-H.)
- Department of Medicine, University of Oviedo, 33003 Oviedo, Spain
- Correspondence:
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12
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Pogozhykh D, Eicke D, Gryshkov O, Wolkers WF, Schulze K, Guzmán CA, Blasczyk R, Figueiredo C. Towards Reduction or Substitution of Cytotoxic DMSO in Biobanking of Functional Bioengineered Megakaryocytes. Int J Mol Sci 2020; 21:ijms21207654. [PMID: 33081128 PMCID: PMC7589913 DOI: 10.3390/ijms21207654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/05/2020] [Accepted: 10/14/2020] [Indexed: 11/30/2022] Open
Abstract
Donor platelet transfusion is currently the only efficient treatment of life-threatening thrombocytopenia, but it is highly challenged by immunological, quality, and contamination issues, as well as short shelf life of the donor material. Ex vivo produced megakaryocytes and platelets represent a promising alternative strategy to the conventional platelet transfusion. However, practical implementation of such strategy demands availability of reliable biobanking techniques, which would permit eliminating continuous cell culture maintenance, ensure time for quality testing, enable stock management and logistics, as well as availability in a ready-to-use manner. At the same time, protocols applying DMSO-based cryopreservation media were associated with increased risks of adverse long-term side effects after patient use. Here, we show the possibility to develop cryopreservation techniques for iPSC-derived megakaryocytes under defined xeno-free conditions with significant reduction or complete elimination of DMSO. Comprehensive phenotypic and functional in vitro characterization of megakaryocytes has been performed before and after cryopreservation. Megakaryocytes cryopreserved DMSO-free, or using low DMSO concentrations, showed the capability to produce platelets in vivo after transfusion in a mouse model. These findings propose biobanking approaches essential for development of megakaryocyte-based replacement and regenerative therapies.
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Affiliation(s)
- Denys Pogozhykh
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, 30625 Hannover, Germany; (D.E.); (R.B.)
- Correspondence: (D.P.); (C.F.)
| | - Dorothee Eicke
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, 30625 Hannover, Germany; (D.E.); (R.B.)
| | - Oleksandr Gryshkov
- Institute for Multiphase Processes, Leibniz Universität Hannover, 30823 Garbsen, Germany;
| | - Willem F. Wolkers
- Unit for Reproductive Medicine, University of Veterinary Medicine Hannover, 30559 Hannover, Germany;
| | - Kai Schulze
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (K.S.); (C.A.G.)
| | - Carlos A. Guzmán
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; (K.S.); (C.A.G.)
| | - Rainer Blasczyk
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, 30625 Hannover, Germany; (D.E.); (R.B.)
| | - Constança Figueiredo
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, 30625 Hannover, Germany; (D.E.); (R.B.)
- Correspondence: (D.P.); (C.F.)
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13
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Guan X, Wang L, Wang H, Wang H, Dai W, Jiang Y. Good Manufacturing Practice-Grade of Megakaryocytes Produced by a Novel Ex Vivo Culturing Platform. Clin Transl Sci 2020; 13:1115-1126. [PMID: 33030809 PMCID: PMC7719378 DOI: 10.1111/cts.12788] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/22/2020] [Indexed: 12/16/2022] Open
Abstract
Ex vivo (EV)‐derived megakaryocytes (MKs) have shown great promise as a substitute for platelets in transfusion medicine to alleviate a severe shortage of donor‐platelets. Challenges remain that include poor efficiency, a limited scale of production, and undefined short‐term storage conditions of EV‐derived MKs. This study aims to develop a high‐efficiency system for large‐scale production of Good Manufacturing Practice (GMP)‐grade MKs and determine the short‐term storage condition for the MKs. A roller‐bottle culture system was introduced to produce GMP‐grade MKs from small‐molecule/cytokine cocktail expanded hematopoietic stem cells. Various buffer systems and temperatures for the short‐term storage of MKs were assessed by cell viability, biomarker expression, and DNA ploidy levels. MKs stored for 24 hours were transplanted into sublethally irradiated nonobese diabetic/severe combined immunodeficient (NOD/SCID) mice to confirm their platelet‐releasing and tissue‐homing ability in vivo. A yield of ~ 2.5 × 104 CD41a+/CD42b+ MKs with purity of ~ 80% was achieved from one original cord blood CD34+ cell. Compared with the static culture, the roller‐bottle culture system significantly enhanced megakaryopoiesis, as shown by the cell size, DNA ploidy, and megakaryopoiesis‐related gene expression. The optimal storage condition for the MKs was defined as normal saline with 10% human serum albumin at 22℃. Stored MKs were capable of rapidly producing functional platelets and largely distributing in the lungs of NOD/SCID mice. The novel development of efficient production and storage system for GMP‐grade MKs represents a significant step toward application of these MKs in the clinic.
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Affiliation(s)
- Xin Guan
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
| | - Lan Wang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China
| | - Hanlu Wang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
| | - Huihui Wang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
| | - Wei Dai
- Department of Environmental Medicine, NYU Langone Medical Center, Tuxedo, New York, USA
| | - Yongping Jiang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
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14
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Flahou C, Sugimoto N, Eto K. [Novel platelet pharming using human induced pluripotent stem cells]. BULLETIN DE L ACADEMIE NATIONALE DE MEDECINE 2020; 204:961-970. [PMID: 33012790 PMCID: PMC7521593 DOI: 10.1016/j.banm.2020.09.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 09/08/2020] [Indexed: 11/14/2022]
Abstract
La production in vitro de plaquettes offre une opportunité de résoudre les problèmes liés aux limitations d’approvisionnement et à la sécurité des dons de produits dérivés du sang. Les cellules souches pluripotentes induites – ou iPSC – sont une source idéale pour la production de cellules à des fins de thérapies régénératives. Nous avons précédemment établi avec succès une lignée mégacaryocytaire immortalisée à partir d’iPSC. Celle-ci possède une capacité de prolifération fiable. Par ailleurs, il est possible de les cryoconserver. Elle est donc une source adaptée de cellules primaires pour la production de plaquettes suivant les Bonnes Pratiques de Fabrication (BPF). Dans le même temps, la capacité améliorée des bioréacteurs à reproduire certaines conditions physiologiques, telle que la turbulence, de pair avec la découverte de molécules favorisant la thrombopoïèse, a contribué à l’accomplissement de la production de plaquettes en quantité et qualité suffisantes pour répondre aux besoins cliniques. La production de plaquettes à partir de cellules iPS s’étend aussi aux patients en état de réfraction allo-immune, par la production de plaquettes autologues ou dont on a génétiquement manipulé l’expression des Antigènes des Leucocytes Humains (HLA) et des Antigènes Plaquettaires Humain (HPA). Considérant ces avancées fondamentales, les plaquettes iPSC avec expression des HLA modifiées se présentent comme un potentiel produit de transfusion universel. Dans cette revue, nous souhaitons apporter une vue d’ensemble de la production in vitro de plaquettes à partir de cellules iPS, et de son possible potentiel transformatif, d’importance capitale dans le domaine de la transfusion des produits sanguins.
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Affiliation(s)
- C Flahou
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, 53, Kawahara-cho, 606-8507 Shogoin, Sakyo-ku, Kyoto, Japon
| | - N Sugimoto
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, 53, Kawahara-cho, 606-8507 Shogoin, Sakyo-ku, Kyoto, Japon
| | - K Eto
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, 53, Kawahara-cho, 606-8507 Shogoin, Sakyo-ku, Kyoto, Japon.,Department of Regenerative Medicine, Chiba University Graduate School of Medicine, Chiba, Japon
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15
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Martínez-Botía P, Acebes-Huerta A, Seghatchian J, Gutiérrez L. In vitro platelet production for transfusion purposes: Where are we now? Transfus Apher Sci 2020; 59:102864. [PMID: 32646795 DOI: 10.1016/j.transci.2020.102864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Over the last decade there has been a worldwide increase in the demand of platelet concentrates (PCs) for transfusion. This is, to a great extent, due to a growing and aging population with the concomitant increase in the incidence of onco-hematological diseases, which require frequent platelet (PLT) transfusions. Currently, PLTs are sourced uniquely from donations, and their storage time is limited only to a few days. The necessity to store PCs at room temperature (to minimize loss of PLT functional integrity), poses a major risk for bacterial contamination. While the implementation of pathogen reduction treatments (PRTs) and new-generation PLT additive solutions have allowed the extension of the shelf life and a safer PLT transfusion product, the concern of PCs shortage still pressures the scientific community to find alternative solutions with the aim of meeting the PLT transfusion increasing demand. In this concise report, we will focus on the efforts made to produce, in in vitro culture, high yields of viable and functional PLTs for transfusion purposes in a cost-effective manner, meeting not only current Good Manufacturing Practices (cGMPs), but also transfusion safety standards.
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Affiliation(s)
- Patricia Martínez-Botía
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Dept. of Medicine, University of Oviedo, Spain
| | - Andrea Acebes-Huerta
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Jerard Seghatchian
- International Consultancy in Strategic Advices on Safety Improvements of Blood-Derived Bioproducts and Suppliers Quality Audit / Inspection, London, England, UK
| | - Laura Gutiérrez
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Dept. of Medicine, University of Oviedo, Spain.
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16
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Patel A, Clementelli CM, Jarocha D, Mosoyan G, Else C, Kintali M, Fong H, Tong J, Gordon R, Gillespie V, Keyzner A, Poncz M, Hoffman R, Iancu-Rubin C. Pre-clinical development of a cryopreservable megakaryocytic cell product capable of sustained platelet production in mice. Transfusion 2019; 59:3698-3713. [PMID: 31802511 DOI: 10.1111/trf.15546] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 09/05/2019] [Accepted: 09/10/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Platelet (PLT) transfusions are the most effective treatments for patients with thrombocytopenia. The growing demand for PLT transfusion products is compounded by a limited supply due to dependency on volunteer donors, a short shelf-life, risk of contaminating pathogens, and alloimmunization. This study provides preclinical evidence that a third-party, cryopreservable source of PLT-generating cells has the potential to complement presently available PLT transfusion products. STUDY DESIGN AND METHODS CD34+ hematopoietic stem/progenitor cells derived from umbilical cord blood (UCB) units were used in a simple and efficient culture system to generate a cell product consisting of megakaryocytes (MKs) at different stages of development. The cultures thus generated were evaluated ex vivo and in vivo before and after cryopreservation. RESULTS We generated a megakaryocytic cell product that can be cryopreserved without altering its phenotypical and functional capabilities. The infusion of such a product, either fresh or cryopreserved, into immune-deficient mice led to production of functional human PLTs which were observed within a week after infusion and persisted for 8 weeks, orders of magnitude longer than that observed after the infusion of traditional PLT transfusion products. The sustained human PLT engraftment was accompanied by a robust presence of human cells in the bone marrow (BM), spleen, and lungs of recipient mice. CONCLUSION This is a proof-of-principle study demonstrating the creation of a cryopreservable megakaryocytic cell product which releases functional PLTs in vivo. Clinical development of such a product is currently being pursued for the treatment of thrombocytopenia in patients with hematological malignancies.
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Affiliation(s)
- Ami Patel
- Division of Hematology and Medical Oncology, Tisch Cancer Institute and the Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Cara Marie Clementelli
- Division of Hematology and Medical Oncology, Tisch Cancer Institute and the Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Danuta Jarocha
- Division of Hematology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Gohar Mosoyan
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Cindy Else
- Comparative Pathology Laboratory in the Center for Comparative Medicine and Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Manisha Kintali
- Division of Hematology and Medical Oncology, Tisch Cancer Institute and the Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Helen Fong
- Sangamo Therapeutics, Inc., Richmond, California
| | - Jay Tong
- AllCells, LLC, Alameda, California
| | - Ronald Gordon
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Virginia Gillespie
- Comparative Pathology Laboratory in the Center for Comparative Medicine and Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Alla Keyzner
- Division of Hematology and Medical Oncology, Tisch Cancer Institute and the Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Mortimer Poncz
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ronald Hoffman
- Division of Hematology and Medical Oncology, Tisch Cancer Institute and the Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Camelia Iancu-Rubin
- Division of Hematology and Medical Oncology, Tisch Cancer Institute and the Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.,Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
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17
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Martinez AF, Miller WM. Enabling Large-Scale Ex Vivo Production of Megakaryocytes from CD34 + Cells Using Gas-Permeable Surfaces. Stem Cells Transl Med 2019; 8:658-670. [PMID: 30848565 PMCID: PMC6591548 DOI: 10.1002/sctm.18-0160] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 02/06/2019] [Indexed: 12/11/2022] Open
Abstract
Patients suffering from acute or sustained thrombocytopenia require platelet transfusions, which are entirely donor-based and limited by challenges related to storage and fluctuating supply. Developing cell-culture technologies will enable ex vivo and donor-independent platelet production. However, critical advancements are needed to improve scalability and increase megakaryocyte (Mk) culture productivity. To address these needs, we evaluated Mk production from mobilized peripheral blood CD34+ cells cultured on a commercially available gas-permeable silicone rubber membrane, which provides efficient gas exchange, and investigated the use of fed-batch media dilution schemes. Starting with a cell-surface density of 40 × 103 CD34+ cells per cm2 (G40D), culturing cells on the membrane for the first 5 days and employing media dilutions yielded 39 ± 19 CD41+ CD42b+ Mks per input CD34+ cell by day 11-a 2.2-fold increase compared with using standard culture surfaces and full media exchanges. By day 7, G40D conditions generated 1.5-fold more CD34+ cells and nearly doubled the numbers of Mk progenitors. The increased number of Mk progenitors coupled with media dilutions, potentially due to the retention of interleukin (IL)-3, increased Mk production in G40D. Compared with controls, G40D had higher viability, yielded threefold more Mks per milliliter of media used and exhibited lower mean ploidy, but had higher numbers of high-ploidy Mks. Finally, G40D-Mks produced proplatelets and platelet-like-particles that activate and aggregate upon stimulation. These results highlight distinct improvements in Mk cell-culture and demonstrate how new technologies and techniques are needed to enable clinically relevant production of Mks for platelet generation and cell-based therapies.
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Affiliation(s)
- Andres F Martinez
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois, USA
| | - William M Miller
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois, USA.,Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Evanston, Illinois, USA
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18
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Kizilyer A, Singh MV, Singh VB, Suwunnakorn S, Palis J, Maggirwar SB. Inhibition of Tropomyosin Receptor Kinase A Signaling Negatively Regulates Megakaryopoiesis and induces Thrombopoiesis. Sci Rep 2019; 9:2781. [PMID: 30808933 PMCID: PMC6391490 DOI: 10.1038/s41598-019-39385-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 12/05/2018] [Indexed: 02/07/2023] Open
Abstract
Neurotrophin signaling modulates the differentiation and function of mature blood cells. The expression of neurotrophin receptors and ligands by hematopoietic and stromal cells of the bone marrow indicates that neurotrophins have the potential to regulate hematopoietic cell fate decisions. This study investigates the role of neurotrophins and Tropomyosin receptor kinases (Trk) in the development of megakaryocytes (MKs) and their progeny cells, platelets. Results indicate that primary human MKs and MK cells lines, DAMI, Meg-01 and MO7e express TrkA, the primary receptor for Nerve Growth Factor (NGF) signaling. Activation of TrkA by NGF enhances the expansion of human MK progenitors (MKPs) and, to some extent, MKs. Whereas, inhibition of TrkA receptor by K252a leads to a 50% reduction in the number of both MKPs and MKs and is associated with a 3-fold increase in the production of platelets. In order to further confirm the role of TrkA signaling in platelet production, TrkA deficient DAMI cells were generated using CRISPR-Cas9 technology. Comparative analysis of wild-type and TrkA-deficient Dami cells revealed that loss of TrkA signaling induced apoptosis of MKs and increased platelet production. Overall, these findings support a novel role for TrkA signaling in platelet production and highlight its potential as therapeutic target for Thrombocytopenia.
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Affiliation(s)
- Ayse Kizilyer
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, United States of America
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Meera V Singh
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, United States of America
| | - Vir B Singh
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, United States of America
| | - Sumanun Suwunnakorn
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, United States of America
| | - James Palis
- Department of Pediatrics, Hematology and Oncology, University of Rochester Medical Center, Rochester, NY, United States of America
| | - Sanjay B Maggirwar
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, United States of America.
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19
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20
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Coller BS. Foreword: A Brief History of Ideas About Platelets in Health and Disease. Platelets 2019. [DOI: 10.1016/b978-0-12-813456-6.09988-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Abstract
With a growing demand for platelet transfusions, large-scale ex vivo platelet production would alleviate the reliance on donors. Now, Ito et al. report that turbulence is an important physical regulator of platelet generation in vivo and can be exploited in a bioreactor to enable clinical scale production of functional platelets starting from human iPSCs.
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Affiliation(s)
- Camelia Iancu-Rubin
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Ronald Hoffman
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Anna Rita Migliaccio
- Department of Biomedical and Neuromotorial Sciences, Alma Mater University, Bologna, Italy.
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22
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Large-scale production of megakaryocytes in microcarrier-supported stirred suspension bioreactors. Sci Rep 2018; 8:10146. [PMID: 29977045 PMCID: PMC6033877 DOI: 10.1038/s41598-018-28459-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/21/2018] [Indexed: 01/18/2023] Open
Abstract
Megakaryocytes (MKs) are the precursors of platelets (PLTs) and may be used for PLT production in vivo or in vitro, as well as a source for PLT-derived growth factors. Induced pluripotent stem cells represent an unlimited cell source for the in vitro production of MKs. This study aimed at developing an effective, xeno-free and scalable system to produce high numbers of MKs. In particular, microcarrier beads-assisted stirred bioreactors were evaluated as a means of improving MK yields. This method resulted in the production of 18.7 × 107 MKs per 50 ml medium. Laminin-coated microcarriers increased MK production per iPSC by up to 10-fold. MKs obtained in this system showed typical features of mature MKs and were able to produce PLTs in vitro and in vivo. To increase safety, MKs produced in the bioreactors were irradiated; a procedure that did not affect their capability to form proPLTs and PTLs after transfusion. In vitro generated MKs represent a promising alternative to donor PLTs and open the possibility for the development of innovative MK-based cell therapies.
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23
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Li Y, Jin C, Bai H, Gao Y, Sun S, Chen L, Qin L, Liu PP, Cheng L, Wang QF. Human NOTCH4 is a key target of RUNX1 in megakaryocytic differentiation. Blood 2018; 131:191-201. [PMID: 29101237 PMCID: PMC5757696 DOI: 10.1182/blood-2017-04-780379] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 10/13/2017] [Indexed: 12/19/2022] Open
Abstract
Megakaryocytes (MKs) in adult marrow produce platelets that play important roles in blood coagulation and hemostasis. Monoallelic mutations of the master transcription factor gene RUNX1 lead to familial platelet disorder (FPD) characterized by defective MK and platelet development. However, the molecular mechanisms of FPD remain unclear. Previously, we generated human induced pluripotent stem cells (iPSCs) from patients with FPD containing a RUNX1 nonsense mutation. Production of MKs from the FPD-iPSCs was reduced, and targeted correction of the RUNX1 mutation restored MK production. In this study, we used isogenic pairs of FPD-iPSCs and the MK differentiation system to identify RUNX1 target genes. Using integrative genomic analysis of hematopoietic progenitor cells generated from FPD-iPSCs, and mutation-corrected isogenic controls, we identified 2 gene sets the transcription of which is either up- or downregulated by RUNX1 in mutation-corrected iPSCs. Notably, NOTCH4 expression was negatively controlled by RUNX1 via a novel regulatory DNA element within the locus, and we examined its involvement in MK generation. Specific inactivation of NOTCH4 by an improved CRISPR-Cas9 system in human iPSCs enhanced megakaryopoiesis. Moreover, small molecules known to inhibit Notch signaling promoted MK generation from both normal human iPSCs and postnatal CD34+ hematopoietic stem and progenitor cells. Our study newly identified NOTCH4 as a RUNX1 target gene and revealed a previously unappreciated role of NOTCH4 signaling in promoting human megakaryopoiesis. Our work suggests that human iPSCs with monogenic mutations have the potential to serve as an invaluable resource for discovery of novel druggable targets.
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Affiliation(s)
- Yueying Li
- Key Laboratory of Genomic and Precision Medicine, Collaborative Innovation Center of Genetics and Development, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Chen Jin
- Key Laboratory of Genomic and Precision Medicine, Collaborative Innovation Center of Genetics and Development, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hao Bai
- Division of Hematology, Department of Medicine and
- Stem Cell Program, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD; and
| | - Yongxing Gao
- Division of Hematology, Department of Medicine and
- Stem Cell Program, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD; and
| | - Shu Sun
- Key Laboratory of Genomic and Precision Medicine, Collaborative Innovation Center of Genetics and Development, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lei Chen
- Key Laboratory of Genomic and Precision Medicine, Collaborative Innovation Center of Genetics and Development, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lei Qin
- Key Laboratory of Genomic and Precision Medicine, Collaborative Innovation Center of Genetics and Development, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Paul P Liu
- Translational and Functional Genomics Branch, National Institutes of Health, National Human Genome Research Institute, Bethesda, MD
| | - Linzhao Cheng
- Division of Hematology, Department of Medicine and
- Stem Cell Program, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD; and
| | - Qian-Fei Wang
- Key Laboratory of Genomic and Precision Medicine, Collaborative Innovation Center of Genetics and Development, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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24
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Abstract
Ex vivo production of human platelets has been pursued as an alternative measure to resolve limitations in the supply and safety of current platelet transfusion products. To this end, induced pluripotent stem cells (iPSCs) are considered an ideal global source, as they are not only pluripotent and self-renewing, but are also available from basically any person, have relatively few ethical issues, and are easy to manipulate. From human iPSCs, megakaryocyte (MK) lines with robust proliferation capacity have been established by the introduction of specified sets of genes. These expandable MKs are also cryopreservable and thus would be suitable as master cells for good manufacturing practice (GMP)-grade production of platelets, assuring availability on demand and safety against blood-borne infections. Meanwhile, developments in bioreactors that physically mimic the in vivo environment and discovery of substances that promote thrombopoiesis have yielded competent platelets with improved efficiency. The derivation of platelets from iPSCs could further resolve transfusion-related alloimmune complications through the manufacturing of autologous products and human leukocyte antigen (HLA)-compatible platelets from stocked homologous HLA-type iPSC libraries or by manipulation of HLAs and human platelet antigens (HPAs). Considering these key advances in the field, HLA-deleted platelets could become a universal product that is manufactured at industrial level to safely fulfill almost all demands. In this review, we provide an overview of the ex vivo production of iPSC-derived platelets toward clinical applications, a production that would revolutionize the blood transfusion system and lead the field of iPSC-based regenerative medicine.
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Affiliation(s)
- N Sugimoto
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - K Eto
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
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25
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Baigger A, Blasczyk R, Figueiredo C. Towards the Manufacture of Megakaryocytes and Platelets for Clinical Application. Transfus Med Hemother 2017. [PMID: 28626367 DOI: 10.1159/000477261] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Platelet transfusions are used in standard clinical practice to prevent hemorrhage in patients suffering from thrombocytopenia or platelet dysfunctions. Recently, a constant rise on the demand of platelets for transfusion has been registered. This may be associated with several factors including demographic changes, population aging as well as incidence and prevalence of hematological diseases. In addition, platelet-regenerative properties have been started to be exploited in different areas such as tissue remodeling and anti-cancer therapies. These new applications are also expected to increase the future demand on platelets. Thus, in vitro generated platelets may constitute a highly desirable alternative to meet the rising demand on platelets. Several factors have been considered in the road trip of producing in vitro megakaryocytes and platelets for clinical application. From selection of the cell source, differentiation protocols and culture conditions to the design of optimal bioreactors, several strategies have been proposed to maximize production yields while preserving functionality. This review summarizes new advances in megakaryocyte and platelet differentiation and their production upscaling.
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Affiliation(s)
- Anja Baigger
- Institute for Transfusion Medicine, Hanover Medical School, Hanover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hanover Medical School, Hanover, Germany
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Understanding platelet generation from megakaryocytes: implications for in vitro-derived platelets. Blood 2016; 127:1227-33. [PMID: 26787738 DOI: 10.1182/blood-2015-08-607929] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/30/2015] [Indexed: 12/12/2022] Open
Abstract
Platelets are anucleate cytoplasmic discs derived from megakaryocytes that circulate in the blood and have major roles in hemostasis, thrombosis, inflammation, and vascular biology. Platelet transfusions are required to prevent the potentially life-threatening complications of severe thrombocytopenia seen in a variety of medical settings including cancer therapy, trauma, and sepsis. Platelets used in the clinic are currently donor-derived which is associated with concerns over sufficient availability, quality, and complications due to immunologic and/or infectious issues. To overcome our dependence on donor-derived platelets for transfusion, efforts have been made to generate in vitro-based platelets. Work in this area has advanced our understanding of the complex processes that megakaryocytes must undergo to generate platelets both in vivo and in vitro. This knowledge has also defined the challenges that must be overcome to bring in vitro-based platelet manufacturing to a clinical reality. This review will focus on our understanding of committed megakaryocytes and platelet release in vivo and in vitro, and how this knowledge can guide the development of in vitro-derived platelets for clinical application.
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Thon JN, Medvetz DA, Karlsson SM, Italiano JE. Road blocks in making platelets for transfusion. J Thromb Haemost 2015; 13 Suppl 1:S55-62. [PMID: 26149051 PMCID: PMC5565795 DOI: 10.1111/jth.12942] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The production of laboratory-generated human platelets is necessary to meet present and future transfusion needs. This manuscript will identify and define the major roadblocks that must be overcome to make human platelet production possible for clinical use, and propose solutions necessary to accelerate development of laboratory-generated human platelets to market.
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Affiliation(s)
- J N Thon
- Hematology Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Platelet BioGenesis, Chestnut Hill, MA, USA
| | - D A Medvetz
- Hematology Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | | - J E Italiano
- Hematology Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Platelet BioGenesis, Chestnut Hill, MA, USA
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Liu Y, Wang Y, Gao Y, Forbes JA, Qayyum R, Becker L, Cheng L, Wang ZZ. Efficient generation of megakaryocytes from human induced pluripotent stem cells using food and drug administration-approved pharmacological reagents. Stem Cells Transl Med 2015; 4:309-19. [PMID: 25713465 DOI: 10.5966/sctm.2014-0183] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Megakaryocytes (MKs) are rare hematopoietic cells in the adult bone marrow and produce platelets that are critical to vascular hemostasis and wound healing. Ex vivo generation of MKs from human induced pluripotent stem cells (hiPSCs) provides a renewable cell source of platelets for treating thrombocytopenic patients and allows a better understanding of MK/platelet biology. The key requirements in this approach include developing a robust and consistent method to produce functional progeny cells, such as MKs from hiPSCs, and minimizing the risk and variation from the animal-derived products in cell cultures. In this study, we developed an efficient system to generate MKs from hiPSCs under a feeder-free and xeno-free condition, in which all animal-derived products were eliminated. Several crucial reagents were evaluated and replaced with Food and Drug Administration-approved pharmacological reagents, including romiplostim (Nplate, a thrombopoietin analog), oprelvekin (recombinant interleukin-11), and Plasbumin (human albumin). We used this method to induce MK generation from hiPSCs derived from 23 individuals in two steps: generation of CD34(+)CD45(+) hematopoietic progenitor cells (HPCs) for 14 days; and generation and expansion of CD41(+)CD42a(+) MKs from HPCs for an additional 5 days. After 19 days, we observed abundant CD41(+)CD42a(+) MKs that also expressed the MK markers CD42b and CD61 and displayed polyploidy (≥16% of derived cells with DNA contents >4N). Transcriptome analysis by RNA sequencing revealed that megakaryocytic-related genes were highly expressed. Additional maturation and investigation of hiPSC-derived MKs should provide insights into MK biology and lead to the generation of large numbers of platelets ex vivo.
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Affiliation(s)
- Yanfeng Liu
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ying Wang
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yongxing Gao
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jessica A Forbes
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Rehan Qayyum
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Lewis Becker
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Linzhao Cheng
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Zack Z Wang
- Division of Hematology, Department of Medicine, Institute for Cell Engineering, Department of Chemical and Biomolecular Engineering, and Divisions of General Internal Medicine and Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Abstract
PURPOSE OF REVIEW Stem cells are an important tool for the study of ex-vivo models of megakaryopoiesis and the production of functional platelets. In this manuscript, we review the optimization of megakaryocyte and platelet differentiation and discuss the mechanistic studies and disease models that have incorporated stem cell technologies. RECENT FINDINGS Mechanisms of cytoskeletal regulation and signal transduction have revealed insights into hierarchical dynamics of hematopoiesis, highlighting the close relationship between hematopoietic stem cells and cells of the megakaryocyte lineage. Platelet disorders have been successfully modeled and genetically corrected, and differentiation strategies have been optimized to the extent that utilizing stem cell-derived platelets for cellular therapy is feasible. SUMMARY Studies that utilize stem cells for the efficient derivation of megakaryocytes and platelets have played a role in uncovering novel molecular mechanisms of megakaryopoiesis, modeling and correcting relevant diseases, and differentiating platelets that are functional and scalable for translation into the clinic. Efforts to derive megakaryocytes and platelets from pluripotent stem cells foster the opportunity of a revolutionary cellular therapy for the treatment of multiple platelet-associated diseases.
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Rua EDAO, Porto ML, Ramos JPL, Nogueira BV, Meyrelles SS, Vasquez EC, Pereira TC. Effects of tobacco smoking during pregnancy on oxidative stress in the umbilical cord and mononuclear blood cells of neonates. J Biomed Sci 2014; 21:105. [PMID: 25547987 PMCID: PMC4302517 DOI: 10.1186/s12929-014-0105-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/05/2014] [Indexed: 12/21/2022] Open
Abstract
Background Although cigarette smoke is known to be a complex mixture of over 4000 substances that can lead to damage through active or passive smoking, its mechanisms and biochemical consequences in pregnancy and neonates are not yet fully understood. Therefore, in the present study, we propose to study the impact of smoking during gestation on the viability of blood mononuclear cells (MNC) from umbilical cords of newborns to assess the degree of oxidative stress and cell viability. After childbirth, the cord blood and the umbilical cord were immediately collected in public hospitals in Greater Vitoria, ES, Brazil. Flow cytometry was used to analyze the cord blood followed by biochemical and histological tests to analyze possible changes in the umbilical cord. Results Pregnant smokers had a reduction of MNC viability from the umbilical cord (10%), an increase in the production of reactive oxygen species (ROS) and an increase in cell apoptosis (~2-fold) compared to pregnant non-smokers. In the umbilical cord, it was observed an increase of advanced oxidation protein products - AOPP (~2.5-fold) and a loss of the typical architecture and disposition of endothelial cells from the umbilical artery. Conclusions These data suggest that maternal cigarette smoking during pregnancy (even in small amounts) may compromise the viability of MNC cells and damage the umbilical cord structure, possibly by excessive ROS bioavailability.
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Li J, Luo J, Luo YQ, Zhou M, Zhao L, Yao LJ, Dong H, Yang RN. Overexpression of tumstatin in genetically modified megakaryocytes changes the proangiogenic effect of platelets. Transfusion 2014; 54:2106-17. [PMID: 24655355 DOI: 10.1111/trf.12617] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 12/28/2013] [Accepted: 01/09/2014] [Indexed: 01/08/2023]
Abstract
BACKGROUND Thrombocytopenia is a common side effect of tumor chemotherapy, the main management approach to which is based on platelet (PLT) transfusion. However, PLTs, containing angiogenesis regulators, play a major role in boosting tumor growth and metastasis. The purpose of the study was to determine whether PLTs have the capacity to overexpress tumstatin by modified megakaryocyte (MK) and PLT precursors using lentivirus-mediated gene transfer, which might lead to alteration in proangiogenic effect of PLTs. STUDY DESIGN AND METHODS CD34+ hematopoietic stem cells (HSCs) were transduced with recombinant lentivirus carrying tumstatin and induced to produce MKs and PLTs in the culture medium containing a cytokine cocktail. Flow cytometry and aggregation test were used to detect the generation and function of MKs and PLTs. Western blot analysis and confocal microscopy were applied to examine the expression and distribution of tumstatin in transgenic MKs and PLTs. Capillary tube formation of human umbilical vein endothelial cells (HUVECs) was used to evaluate the inhibitory effect of transgenic PLTs. RESULTS CD34+ HSCs can be efficiently transduced with lentivirus vectors and successfully differentiated into MKs and PLTs. Large amounts of functional MKs and PLTs could be generated and had correct biologic characteristics. The tests demonstrated the feasibility of tumstatin expression in MKs and PLTs under control of the cytomegalovirus promoter, that thus tumstatin was stored in the α-granules of PLTs, and that the releasate of thrombin or A543 cell-stimulated transgenic PLTs obviously inhibited the growth of capillary tube network structures of HUVECs. CONCLUSION Gene-modified CD34+ HSCs not only successfully differentiated into MKs and PLTs but also expressed tumstatin protein. Release of tumstatin in transgenic PLT granules led to antiangiogenic effect of PLTs.
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Affiliation(s)
- Juan Li
- Department of Laboratory Medicine, The Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, China
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Avanzi MP, Mitchell WB. Ex Vivoproduction of platelets from stem cells. Br J Haematol 2014; 165:237-47. [DOI: 10.1111/bjh.12764] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 01/08/2014] [Indexed: 12/12/2022]
Affiliation(s)
- Mauro P. Avanzi
- Platelet Biology Laboratory; New York Blood Center; Lindsley F. Kimball Research Institute; New York NY USA
| | - William Beau Mitchell
- Platelet Biology Laboratory; New York Blood Center; Lindsley F. Kimball Research Institute; New York NY USA
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