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Hong J, Zheng W, Wang X, Hao Y, Cheng G. Biomedical polymer scaffolds mimicking bone marrow niches to advance in vitro expansion of hematopoietic stem cells. J Mater Chem B 2022; 10:9755-9769. [PMID: 36444902 DOI: 10.1039/d2tb01211a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hematopoietic stem cell (HSC) transplantation provides an effective platform for the treatment of hematological disorders. However, the donor shortage of HSCs and immune responses severely restrict the clinical applications of HSCs. Compared to allogeneic transplantation, autogenous transplantation poses less risk to the immune system, but the problem associated with insufficient HSCs remains a substantial challenge. A significant strategy for obtaining sufficient HSCs is to promote the expansion of HSCs. In vivo, a bone marrow microenvironment supports the survival and hematopoiesis of HSCs. Therefore, it is crucial to establish a platform that mimics the features of a bone marrow microenvironment for the in vitro expansion of HSCs. Three-dimensional (3D) scaffolds have emerged as the most powerful tools to mimic cellular microenvironments for the growth and proliferation of stem cells. Biomedical polymers have been widely utilized as cell scaffolds due to their advantageous features including favorable biocompatibility, biodegradability, as well as adjustable physical and chemical properties. This review focuses on recent advances in the study of biomedical polymer scaffolds that mimic bone marrow microenvironments for the in vitro expansion of HSCs. Bone marrow transplantation and microenvironments are first introduced. Then, biomedical polymer scaffolds for the expansion of HSCs and future prospects are summarized and discussed.
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Affiliation(s)
- Jing Hong
- Guangdong Institute of Semiconductor Micro-Nano Manufacturing Technology, Guangdong 528200, China.,CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Jiangsu 215123, China. .,School of Nano-Tech and Nano Bionics, University of Science and Technology of China, Anhui 230026, China
| | - Wenlong Zheng
- Suzhou Kowloon Hospital Shanghai Jiao Tong University School of Medicine, Jiangsu 215021, China
| | | | - Ying Hao
- Guangdong Institute of Semiconductor Micro-Nano Manufacturing Technology, Guangdong 528200, China.,CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Jiangsu 215123, China. .,School of Nano-Tech and Nano Bionics, University of Science and Technology of China, Anhui 230026, China
| | - Guosheng Cheng
- Guangdong Institute of Semiconductor Micro-Nano Manufacturing Technology, Guangdong 528200, China.,CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Jiangsu 215123, China. .,School of Nano-Tech and Nano Bionics, University of Science and Technology of China, Anhui 230026, China
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The extracellular matrix of hematopoietic stem cell niches. Adv Drug Deliv Rev 2022; 181:114069. [PMID: 34838648 PMCID: PMC8860232 DOI: 10.1016/j.addr.2021.114069] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/18/2021] [Accepted: 11/21/2021] [Indexed: 12/21/2022]
Abstract
Comprehensive overview of different classes of ECM molecules in the HSC niche. Overview of current knowledge on role of biophysics of the HSC niche. Description of approaches to create artificial stem cell niches for several application. Importance of considering ECM in drug development and testing.
Hematopoietic stem cells (HSCs) are the life-long source of all types of blood cells. Their function is controlled by their direct microenvironment, the HSC niche in the bone marrow. Although the importance of the extracellular matrix (ECM) in the niche by orchestrating niche architecture and cellular function is widely acknowledged, it is still underexplored. In this review, we provide a comprehensive overview of the ECM in HSC niches. For this purpose, we first briefly outline HSC niche biology and then review the role of the different classes of ECM molecules in the niche one by one and how they are perceived by cells. Matrix remodeling and the emerging importance of biophysics in HSC niche function are discussed. Finally, the application of the current knowledge of ECM in the niche in form of artificial HSC niches for HSC expansion or targeted differentiation as well as drug testing is reviewed.
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Bianco JER, Rosa RG, Congrains-Castillo A, Joazeiro PP, Waldman SD, Weber JF, Saad STO. Characterization of a novel decellularized bone marrow scaffold as an inductive environment for hematopoietic stem cells. Biomater Sci 2019; 7:1516-1528. [PMID: 30681075 DOI: 10.1039/c8bm01503a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Due to the increasing demand for a bone marrow study model, we developed a natural scaffold from decellularized bovine bone marrow (DeBM). The obtained bioscaffold was analyzed after the decellularization process; histological staining, scanning and transmission electron microscopy confirmed the preservation of its native 3D-architecture; including blood vessels and cell niches as well as the integrity of important components of the extracellular matrix; Collagen III, IV and fibronectin. In addition to biochemical composition, physical properties of the bone marrow were also conserved. We evaluated the suitability of this bio-scaffold as a tridimensional culture platform. Seeding experiments with umbilical cord-derived hematopoietic stem cells and human bone marrow stromal cell line HS5 demonstrated that this scaffold is capable of supporting hematopoietic and stromal cell adhesion and proliferation without the need of exogenous factors. DeBM provided an inductive environment for the repopulation of the bone marrow inducing the expression of SDF-1, HGF and SCF by seeded stromal cells. The presence of these potent hematopoietic chemoattractants would be crucial for ex vivo long-term culture of HSCs, and for recreating the natural microenvironment of the bone marrow for bioengineering applications. We conclude that the decellularization process succeeded in preserving the 3D structure and mechanical properties of the bone marrow. The resulting scaffold is suitable for cell culture, representing an advantageous bone marrow experimental model, and potentially an effective platform for CD34+ HSC expansion and differentiation for clinical applications.
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Li D, Chiu G, Lipe B, Hopkins RA, Lillis J, Ashton JM, Paul S, Aljitawi OS. Decellularized Wharton jelly matrix: a biomimetic scaffold for ex vivo hematopoietic stem cell culture. Blood Adv 2019; 3:1011-1026. [PMID: 30940636 PMCID: PMC6457237 DOI: 10.1182/bloodadvances.2018019315] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 02/10/2019] [Indexed: 12/13/2022] Open
Abstract
Hematopoietic stem progenitor cells (HSPCs) reside in the bone marrow (BM) hematopoietic "niche," a special 3-dimensional (3D) microenvironment that regulates HSPC self-renewal and multipotency. In this study, we evaluated a novel 3D in vitro culture system that uses components of the BM hematopoietic niche to expand umbilical cord blood (UCB) CD34+ cells. We developed this model using decellularized Wharton jelly matrix (DWJM) as an extracellular matrix (ECM) scaffold and human BM mesenchymal stromal cells (MSCs) as supporting niche cells. To assess the efficacy of this model in expanding CD34+ cells, we analyzed UCB CD34+ cells, following culture in DWJM, for proliferation, viability, self-renewal, multilineage differentiation, and transmigration capability. We found that DWJM significantly expanded UCB HSPC subset. It promoted UCB CD34+ cell quiescence, while maintaining their viability, differentiation potential with megakaryocytic differentiation bias, and clonogenic capacity. DWJM induced an increase in the frequency of c-kit+ cells, a population with enhanced self-renewal ability, and in CXCR4 expression in CD34+ cells, which enhanced their transmigration capability. The presence of BM MSCs in DWJM, however, impaired UCB CD34+ cell transmigration and suppressed CXCR4 expression. Transcriptome analysis indicated that DWJM upregulates a set of genes that are specifically involved in megakaryocytic differentiation, cell mobility, and BM homing. Collectively, our results indicate that the DWJM-based 3D culture system is a novel in vitro model that supports the proliferation of UCB CD34+ cells with enhanced transmigration potential, while maintaining their differentiation potential. Our findings shed light on the interplay between DWJM and BM MSCs in supporting the ex vivo culture of human UCB CD34+ cells for use in clinical transplantation.
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Affiliation(s)
- Dandan Li
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Grace Chiu
- Hematology/Oncology and Bone Marrow Transplant Program, Department of Medicine, University of Rochester Medical Center, Rochester, NY
| | - Brea Lipe
- Hematology/Oncology and Bone Marrow Transplant Program, Department of Medicine, University of Rochester Medical Center, Rochester, NY
| | - Richard A Hopkins
- Cardiac Surgery Research Laboratories, Children's Mercy Hospital and Clinics, Kansas City, MO; and
| | - Jacquelyn Lillis
- Genomics Research Center, University of Rochester Medical Center, Rochester, NY
| | - John M Ashton
- Genomics Research Center, University of Rochester Medical Center, Rochester, NY
| | - Soumen Paul
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Omar S Aljitawi
- Hematology/Oncology and Bone Marrow Transplant Program, Department of Medicine, University of Rochester Medical Center, Rochester, NY
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Singh A, Yadav CB, Tabassum N, Bajpeyee AK, Verma V. Stem cell niche: Dynamic neighbor of stem cells. Eur J Cell Biol 2018; 98:65-73. [PMID: 30563738 DOI: 10.1016/j.ejcb.2018.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/09/2018] [Accepted: 12/11/2018] [Indexed: 12/19/2022] Open
Abstract
Stem cell niche is a specialized and dynamic microenvironment around the stem cells which plays a critical role in maintaining the stemness properties of stem cells. Over the years, advancement in the research activity has revealed the various important aspects of stem cell niche including cell-cell interaction, cell-extracellular matrix interaction, a large number of soluble signaling factors and various biochemical and biophysical cues (such as oxygen tension, flow, and shear and pore size). Stem cells have the potential to be a powerful tool in regenerative medicine due to their self-renewal property and immense differentiation potential. Recent progresses in in vitro culture conditions of embryonic stem cells, adult stem cells and induced pluripotent stem cells have enabled the researchers to investigate and understand the role of the microenvironment in stem cell properties. The engineered artificial stem cell niche has led to a better execution of stem cells in regenerative medicine. Here we elucidate the key components of stem cell niche and their role in niche engineering and stem cell therapeutics.
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Affiliation(s)
- Anshuman Singh
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - C B Yadav
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - N Tabassum
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - A K Bajpeyee
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India
| | - V Verma
- Centre of Biotechnology, Nehru Science Complex, University of Allahabad, Allahabad, India.
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Matrix protein tenascin-C expands and reversibly blocks maturation of murine eosinophil progenitors. J Allergy Clin Immunol 2018; 142:695-698.e4. [PMID: 29705244 DOI: 10.1016/j.jaci.2018.02.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 02/16/2018] [Accepted: 02/23/2018] [Indexed: 01/12/2023]
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Abdala-Valencia H, Coden ME, Chiarella SE, Jacobsen EA, Bochner BS, Lee JJ, Berdnikovs S. Shaping eosinophil identity in the tissue contexts of development, homeostasis, and disease. J Leukoc Biol 2018; 104:95-108. [PMID: 29656559 DOI: 10.1002/jlb.1mr1117-442rr] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/16/2018] [Accepted: 02/17/2018] [Indexed: 12/20/2022] Open
Abstract
Eosinophils play homeostatic roles in different tissues and are found in several organs at a homeostatic baseline, though their tissue numbers increase significantly in development and disease. The morphological, phenotypical, and functional plasticity of recruited eosinophils are influenced by the dynamic tissue microenvironment changes between homeostatic, morphogenetic, and disease states. Activity of the epithelial-mesenchymal interface, extracellular matrix, hormonal inputs, metabolic state of the environment, as well as epithelial and mesenchymal-derived innate cytokines and growth factors all have the potential to regulate the attraction, retention, in situ hematopoiesis, phenotype, and function of eosinophils. This review examines the reciprocal relationship between eosinophils and such tissue factors, specifically addressing: (1) tissue microenvironments associated with the presence and activity of eosinophils; (2) non-immune tissue ligands regulatory for eosinophil accumulation, hematopoiesis, phenotype, and function (with an emphasis on the extracellular matrix and epithelial-mesenchymal interface); (3) the contribution of eosinophils to regulating tissue biology; (4) eosinophil phenotypic heterogeneity in different tissue microenvironments, classifying eosinophils as progenitors, steady state eosinophils, and Type 1 and 2 activated phenotypes. An appreciation of eosinophil regulation by non-immune tissue factors is necessary for completing the picture of eosinophil immune activation and understanding the functional contribution of these cells to development, homeostasis, and disease.
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Affiliation(s)
- Hiam Abdala-Valencia
- Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Mackenzie E Coden
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Sergio E Chiarella
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Elizabeth A Jacobsen
- Department of Biochemistry and Molecular Biology, Mayo Clinic Arizona, Scottsdale, Arizona, USA
| | - Bruce S Bochner
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - James J Lee
- Department of Biochemistry and Molecular Biology, Mayo Clinic Arizona, Scottsdale, Arizona, USA
| | - Sergejs Berdnikovs
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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8
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Zhang Y, Pan X, Shi Z, Cai H, Gao Y, Zhang W. Sustained release of stem cell factor in a double network hydrogel for ex vivo culture of cord blood-derived CD34 + cells. Cell Prolif 2018; 51:e12407. [PMID: 29143396 PMCID: PMC6528907 DOI: 10.1111/cpr.12407] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 10/13/2017] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Stem cell factor (SCF) is considered as a commonly indispensable cytokine for proliferation of haematopoietic stem cells (HSCs), which is used in large dosages during ex vivo culture. The work presented here aimed to reduce the consumption of SCF by sustained release but still support cells proliferation and maintain the multipotency of HSCs. MATERIALS AND METHODS Stem cell factor was physically encapsulated within a hyaluronic acid/gelatin double network (HGDN) hydrogel to achieve a slow release rate. CD34+ cells were cultured within the SCF-loaded HGDN hydrogel for 14 days. The cell number, phenotype and functional capacity were investigated after culture. RESULTS The HGDN hydrogels had desirable properties and encapsulated SCF kept being released for more than 6 days. SCF remained the native bioactivity, and the proliferation of HSCs within the SCF-loaded HGDN hydrogel was not affected, although the consumption of SCF was only a quarter in comparison with the conventional culture. Moreover, CD34+ cells harvested from the SCF-loaded HGDN hydrogels generated more multipotent colony-forming units (CFU-GEMM). CONCLUSION The data suggested that the SCF-loaded HGDN hydrogel could support ex vivo culture of HSCs, thus providing a cost-effective culture protocol for HSCs.
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Affiliation(s)
- Yuanhao Zhang
- State Key Laboratory of Bioreactor EngineeringShanghai Key Laboratory of Functional Materials ChemistryEast China University of Science and TechnologyShanghai200237China
| | - Xiuwei Pan
- State Key Laboratory of Bioreactor EngineeringShanghai Key Laboratory of Functional Materials ChemistryEast China University of Science and TechnologyShanghai200237China
| | - Zhen Shi
- State Key Laboratory of Bioreactor EngineeringShanghai Key Laboratory of Functional Materials ChemistryEast China University of Science and TechnologyShanghai200237China
| | - Haibo Cai
- State Key Laboratory of Bioreactor EngineeringShanghai Key Laboratory of Functional Materials ChemistryEast China University of Science and TechnologyShanghai200237China
| | - Yun Gao
- State Key Laboratory of Bioreactor EngineeringShanghai Key Laboratory of Functional Materials ChemistryEast China University of Science and TechnologyShanghai200237China
| | - Weian Zhang
- State Key Laboratory of Bioreactor EngineeringShanghai Key Laboratory of Functional Materials ChemistryEast China University of Science and TechnologyShanghai200237China
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Rödling L, Schwedhelm I, Kraus S, Bieback K, Hansmann J, Lee-Thedieck C. 3D models of the hematopoietic stem cell niche under steady-state and active conditions. Sci Rep 2017; 7:4625. [PMID: 28676663 PMCID: PMC5496931 DOI: 10.1038/s41598-017-04808-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 05/22/2017] [Indexed: 12/11/2022] Open
Abstract
Hematopoietic stem cells (HSCs) in the bone marrow are able to differentiate into all types of blood cells and supply the organism each day with billions of fresh cells. They are applied to cure hematological diseases such as leukemia. The clinical need for HSCs is high and there is a demand for being able to control and multiply HSCs in vitro. The hematopoietic system is highly proliferative and thus sensitive to anti-proliferative drugs such as chemotherapeutics. For many of these drugs suppression of the hematopoietic system is the dose-limiting toxicity. Therefore, biomimetic 3D models of the HSC niche that allow to control HSC behavior in vitro and to test drugs in a human setting are relevant for the clinics and pharmacology. Here, we describe a perfused 3D bone marrow analog that allows mimicking the HSC niche under steady-state and activated conditions that favor either HSC maintenance or differentiation, respectively, and allows for drug testing.
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Affiliation(s)
- Lisa Rödling
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Ivo Schwedhelm
- Institute for Tissue Engineering and Regenerative Medicine, University of Würzburg, 97070, Würzburg, Germany
| | - Saskia Kraus
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Karen Bieback
- Institute of Transfusion Medicine and Immunology Mannheim, Medical Faculty Mannheim, Heidelberg University; German Red Cross Blood Donor Service Baden-Württemberg-Hessen, 68167, Mannheim, Germany
| | - Jan Hansmann
- Institute for Tissue Engineering and Regenerative Medicine, University of Würzburg, 97070, Würzburg, Germany
| | - Cornelia Lee-Thedieck
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
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Liu Y, Gill E, Shery Huang YY. Microfluidic on-chip biomimicry for 3D cell culture: a fit-for-purpose investigation from the end user standpoint. Future Sci OA 2017; 3:FSO173. [PMID: 28670465 PMCID: PMC5481809 DOI: 10.4155/fsoa-2016-0084] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 01/19/2017] [Indexed: 12/13/2022] Open
Abstract
A plethora of 3D and microfluidics-based culture models have been demonstrated in the recent years with the ultimate aim to facilitate predictive in vitro models for pharmaceutical development. This article summarizes to date the progress in the microfluidics-based tissue culture models, including organ-on-a-chip and vasculature-on-a-chip. Specific focus is placed on addressing the question of what kinds of 3D culture and system complexities are deemed desirable by the biological and biomedical community. This question is addressed through analysis of a research survey to evaluate the potential use of microfluidic cell culture models among the end users. Our results showed a willingness to adopt 3D culture technology among biomedical researchers, although a significant gap still exists between the desired systems and existing 3D culture options. With these results, key challenges and future directions are highlighted.
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Affiliation(s)
- Ye Liu
- Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, UK, CB2 1PZ
| | - Elisabeth Gill
- Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, UK, CB2 1PZ
| | - Yan Yan Shery Huang
- Department of Engineering, University of Cambridge, Trumpington Street, Cambridge, UK, CB2 1PZ
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Importance of environmental stiffness for megakaryocyte differentiation and proplatelet formation. Blood 2016; 128:2022-2032. [PMID: 27503502 DOI: 10.1182/blood-2016-02-699959] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 07/20/2016] [Indexed: 12/31/2022] Open
Abstract
Megakaryocyte (MK) differentiation occurs within the bone marrow (BM), a complex 3-dimensional (3D) environment of low stiffness exerting local external constraints. To evaluate the influence of the 3D mechanical constraints that MKs may encounter in vivo, we differentiated mouse BM progenitors in methylcellulose (MC) hydrogels tuned to mimic BM stiffness. We found that MKs grown in a medium of 30- to 60-Pa stiffness more closely resembled those in the BM in terms of demarcation membrane system (DMS) morphological aspect and exhibited higher ploidy levels, as compared with MKs in liquid culture. Following resuspension in a liquid medium, MC-grown MKs displayed twice as much proplatelet formation as cells grown in liquid culture. Thus, the MC gel, by mimicking external constraints, appeared to positively influence MK differentiation. To determine whether MKs adapt to extracellular stiffness through mechanotransduction involving actomyosin-based modulation of the intracellular tension, myosin-deficient (Myh9-/-) progenitors were grown in MC gels. Absence of myosin resulted in abnormal cell deformation and strongly decreased proplatelet formation, similarly to features observed for Myh9-/- MKs differentiated in situ but not in vitro. Moreover, megakaryoblastic leukemia 1 (MKL1), a well-known actor in mechanotransduction, was found to be preferentially relocated within the nucleus of MC-differentiated MKs, whereas its inhibition prevented MC-mediated increased proplatelet formation. Altogether, these data show that a 3D medium mimicking BM stiffness contributes, through the myosin IIA and MKL1 pathways, to a more favorable in vitro environment for MK differentiation, which ultimately translates into increased proplatelet production.
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12
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Nelson MR, Roy K. Bone-marrow mimicking biomaterial niches for studying hematopoietic stem and progenitor cells. J Mater Chem B 2016; 4:3490-3503. [DOI: 10.1039/c5tb02644j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This review discusses the considerations and approaches that have been employed for designing biomaterial based cultures for replicating the hematopoietic stem and progenitor cell niche.
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Affiliation(s)
- Michael R. Nelson
- Wallace H. Coulter Department of Biomedical Engineering at the Georgia Tech and Emory University
- The Parker H. Petit Institute for Bioengineering and Biosciences
- Georgia Institute of Technology
- Atlanta
- USA
| | - Krishnendu Roy
- Wallace H. Coulter Department of Biomedical Engineering at the Georgia Tech and Emory University
- The Parker H. Petit Institute for Bioengineering and Biosciences
- Georgia Institute of Technology
- Atlanta
- USA
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