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Liu S, Chen H, Xie H, Liu X, Zhang M. Substrate Stiffness Modulates Stemness and Differentiation of Rabbit Corneal Endothelium Through the Paxillin-YAP Pathway. Invest Ophthalmol Vis Sci 2024; 65:15. [PMID: 38466286 DOI: 10.1167/iovs.65.3.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024] Open
Abstract
Purpose To explore the role of substrate stiffness and the mechanism beneath corneal endothelial cells' (CECs') stemness maintenance and differentiation. Methods CECs were divided into central zone (8 mm trephined boundary) and peripheral zone (8 mm trephined edge with attached limbal). Two zones were analyzed by hematoxylin-eosin staining and scanning electron microscopy for anatomic structure. The elastic modulus of Descemet's membrane (DM) was analyzed by atomic force microscopy. Compressed type I collagen gels with different stiffness were constructed as an in vitro model system to test the role of stiffness on phenotype using cultured rabbit CECs. Cell morphology, expression and intracellular distribution of Yes-associated protein (YAP), differentiation (ZO-1, Na+/K+-ATPase), stemness (FOXD3, CD34, Sox2, Oct3/4), and endothelial-mesenchymal transition (EnMT) markers were analyzed by immunofluorescence, quantitative RT-PCR, and Western blot. Results The results showed that the peripheral area of rabbit and human DM is softer than the central area ex vivo. Using the biomimetic extracellular matrix collagen gels in vitro model, we then demonstrated that soft substrate weakens the differentiation and EnMT in the culture of CECs. It was further proved by the inhibitor experiment that soft substrate enhances stemness maintenance via inhibition of paxillin-YAP signaling, which was activated on a stiff substrate. Conclusions Our findings confirm that substrate stiffness modulates the stemness maintenance and differentiation of CECs and suggest a potential strategy for CEC-based corneal tissue engineering.
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Affiliation(s)
- Shuting Liu
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hua Chen
- Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China
| | - Huatao Xie
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Liu
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mingchang Zhang
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Mulero-Russe A, García AJ. Engineered Synthetic Matrices for Human Intestinal Organoid Culture and Therapeutic Delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307678. [PMID: 37987171 PMCID: PMC10922691 DOI: 10.1002/adma.202307678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/02/2023] [Indexed: 11/22/2023]
Abstract
Human intestinal organoids (HIOs) derived from pluripotent stem cells or adult stem cell biopsies represent a powerful platform to study human development, drug testing, and disease modeling in vitro, and serve as a cell source for tissue regeneration and therapeutic advances in vivo. Synthetic hydrogels can be engineered to serve as analogs of the extracellular matrix to support HIO growth and differentiation. These hydrogels allow for tuning the mechanical and biochemical properties of the matrix, offering an advantage over biologically derived hydrogels such as Matrigel. Human intestinal organoids have been used for repopulating transplantable intestinal grafts and for in vivo delivery to an injured intestinal site. The use of synthetic hydrogels for in vitro culture and for in vivo delivery is expected to significantly increase the relevance of human intestinal organoids for drug screening, disease modeling, and therapeutic applications.
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Affiliation(s)
- Adriana Mulero-Russe
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Andrés J García
- Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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3
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Virdi JK, Pethe P. Assessment of human embryonic stem cells differentiation into definitive endoderm lineage on the soft substrates. Cell Biol Int 2024. [PMID: 38419492 DOI: 10.1002/cbin.12151] [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: 08/31/2023] [Revised: 02/08/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
Pluripotent stem cells (PSCs) hold enormous potential for treating multiple diseases owing to their ability to self-renew and differentiate into any cell type. Albeit possessing such promising potential, controlling their differentiation into a desired cell type continues to be a challenge. Recent studies suggest that PSCs respond to different substrate stiffness and, therefore, can differentiate towards some lineages via Hippo pathway. Human PSCs can also differentiate and self-organize into functional cells, such as organoids. Traditionally, human PSCs are differentiated on stiff plastic or glass plates towards definitive endoderm and then into functional pancreatic progenitor cells in the presence of soluble growth factors. Thus, whether stiffness plays any role in differentiation towards definitive endoderm from human pluripotent stem cells (hPSCs) remains unclear. Our study found that the directed differentiation of human embryonic stem cells towards endodermal lineage on the varying stiffness did not differ from the differentiation on stiff plastic dishes. We also observed no statistical difference between the expression of yes-associated protein (YAP) and phosphorylated YAP. Furthermore, we demonstrate that lysophosphatidic acid, a YAP activator, enhanced definitive endoderm formation, whereas verteporfin, a YAP inhibitor, did not have the significant effect on the differentiation. In summary, our results suggest that human embryonic stem cells may not differentiate in response to changes in stiffness, and that such cues may not have as significant impact on the level of YAP. Our findings indicate that more research is needed to understand the direct relationship between biophysical forces and hPSCs differentiation.
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Affiliation(s)
- Jasmeet Kaur Virdi
- Department of Biological Sciences, Sunandan Divatia School of Science, SVKM's NMIMS (Deemed-to-be) University, Mumbai, Maharashtra, India
| | - Prasad Pethe
- Symbiosis Centre for Stem Cell Research, Symbiosis School of Biological Sciences, Symbiosis International (Deemed) University, Pune, Maharashtra, India
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Aqel S, Al-Thani N, Haider MZ, Abdelhady S, Al Thani AA, Kobeissy F, Shaito AA. Biomaterials in Traumatic Brain Injury: Perspectives and Challenges. BIOLOGY 2023; 13:21. [PMID: 38248452 PMCID: PMC10813103 DOI: 10.3390/biology13010021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/16/2023] [Accepted: 10/23/2023] [Indexed: 01/23/2024]
Abstract
Traumatic brain injury (TBI) is a leading cause of mortality and long-term impairment globally. TBI has a dynamic pathology, encompassing a variety of metabolic and molecular events that occur in two phases: primary and secondary. A forceful external blow to the brain initiates the primary phase, followed by a secondary phase that involves the release of calcium ions (Ca2+) and the initiation of a cascade of inflammatory processes, including mitochondrial dysfunction, a rise in oxidative stress, activation of glial cells, and damage to the blood-brain barrier (BBB), resulting in paracellular leakage. Currently, there are no FDA-approved drugs for TBI, but existing approaches rely on delivering micro- and macromolecular treatments, which are constrained by the BBB, poor retention, off-target toxicity, and the complex pathology of TBI. Therefore, there is a demand for innovative and alternative therapeutics with effective delivery tactics for the diagnosis and treatment of TBI. Tissue engineering, which includes the use of biomaterials, is one such alternative approach. Biomaterials, such as hydrogels, including self-assembling peptides and electrospun nanofibers, can be used alone or in combination with neuronal stem cells to induce neurite outgrowth, the differentiation of human neural stem cells, and nerve gap bridging in TBI. This review examines the inclusion of biomaterials as potential treatments for TBI, including their types, synthesis, and mechanisms of action. This review also discusses the challenges faced by the use of biomaterials in TBI, including the development of biodegradable, biocompatible, and mechanically flexible biomaterials and, if combined with stem cells, the survival rate of the transplanted stem cells. A better understanding of the mechanisms and drawbacks of these novel therapeutic approaches will help to guide the design of future TBI therapies.
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Affiliation(s)
- Sarah Aqel
- Medical Research Center, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Najlaa Al-Thani
- Research and Development Department, Barzan Holdings, Doha P.O. Box 7178, Qatar
| | - Mohammad Z. Haider
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar;
| | - Samar Abdelhady
- Faculty of Medicine, Alexandria University, Alexandria 21544, Egypt;
| | - Asmaa A. Al Thani
- Biomedical Research Center and Department of Biomedical Sciences, College of Health Science, QU Health, Qatar University, Doha P.O. Box 2713, Qatar;
| | - Firas Kobeissy
- Department of Neurobiology, Center for Neurotrauma, Multiomics & Biomarkers (CNMB), Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Abdullah A. Shaito
- Biomedical Research Center, Department of Biomedical Sciences at College of Health Sciences, College of Medicine, Qatar University, Doha P.O. Box 2713, Qatar
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Godoy-Gallardo M, Cun X, Liu X, Hosta-Rigau L. Silica Replicas Derived from Mammalian Cells as an Innovative Approach to Physically Direct Cell Lineage Decisions of Mesenchymal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48855-48870. [PMID: 37823476 DOI: 10.1021/acsami.3c05556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
By means of a "live-cell" template strategy, silica replicas displaying the same morphology and topography of the mammalian cells used as templates are fabricated. The replicas are used as substrates to direct the differentiation of mesenchymal stem cells (MSCs) to predefined cell lineages. Upregulation of specific genes shows how the silica replica-based substrates have the ability to induce the molecular characteristics of the mature cell types from which they have been derived from. Thus, MSCs cultured in the presence of silica replicas of human osteoblasts (HObs) differentiate into HObs-like cells, as shown by the upregulation of specific osteogenic genes. Likewise, when MSCs are incubated with silica replicas derived from human chondrocytes, an enhanced expression of chondrogenic markers is observed. Importantly, the effects of the silica replicas are cell type-specific since the incubation of MSCs with HObs silica replicas does not result in upregulation of chondrogenic markers and vice versa. What is more, for both cases, the differentiation rate is enhanced when the silica replicas are used in combination with growth factors, suggesting a potential synergistic effect. These results demonstrate the potential of this innovative method as an efficient and cheap approach with the potential to eliminate, or at least reduce, the use of biochemically soluble compounds in stem cells research.
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Affiliation(s)
- Maria Godoy-Gallardo
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Produktionstorvet, Building 423, 2800 Kongens Lyngby, Denmark
| | - Xingli Cun
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Produktionstorvet, Building 423, 2800 Kongens Lyngby, Denmark
| | - Xiaoli Liu
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Produktionstorvet, Building 423, 2800 Kongens Lyngby, Denmark
| | - Leticia Hosta-Rigau
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Produktionstorvet, Building 423, 2800 Kongens Lyngby, Denmark
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Hasanzadeh E, Seifalian A, Mellati A, Saremi J, Asadpour S, Enderami SE, Nekounam H, Mahmoodi N. Injectable hydrogels in central nervous system: Unique and novel platforms for promoting extracellular matrix remodeling and tissue engineering. Mater Today Bio 2023; 20:100614. [PMID: 37008830 PMCID: PMC10050787 DOI: 10.1016/j.mtbio.2023.100614] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/23/2023] [Accepted: 03/16/2023] [Indexed: 04/04/2023] Open
Abstract
Repairing central nervous system (CNS) is difficult due to the inability of neurons to recover after damage. A clinically acceptable treatment to promote CNS functional recovery and regeneration is currently unavailable. According to recent studies, injectable hydrogels as biodegradable scaffolds for CNS tissue engineering and regeneration have exceptionally desirable attributes. Hydrogel has a biomimetic structure similar to extracellular matrix, hence has been considered a 3D scaffold for CNS regeneration. An interesting new type of hydrogel, injectable hydrogels, can be injected into target areas with little invasiveness and imitate several aspects of CNS. Injectable hydrogels are being researched as therapeutic agents because they may imitate numerous properties of CNS tissues and hence reduce subsequent injury and regenerate neural tissue. Because of their less adverse effects and cost, easier use and implantation with less pain, and faster regeneration capacity, injectable hydrogels, are more desirable than non-injectable hydrogels. This article discusses the pathophysiology of CNS and the use of several kinds of injectable hydrogels for brain and spinal cord tissue engineering, paying particular emphasis to recent experimental studies.
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Affiliation(s)
- Elham Hasanzadeh
- Immunogenetics Research Center, Department of Tissue Engineering & Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
- Corresponding author. School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Valie-Asr Boulevard, Sari, Mazandaran, Iran.
| | - Alexander Seifalian
- Nanotechnology & Regenerative Medicine Commercialisation Centre (NanoRegMed Ltd, Nanoloom Ltd, & Liberum Health Ltd), London BioScience Innovation Centre, 2 Royal College Street, London, UK
| | - Amir Mellati
- Department of Tissue Engineering & Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Jamileh Saremi
- Research Center for Noncommunicable Diseases, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Shiva Asadpour
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Seyed Ehsan Enderami
- Immunogenetics Research Center, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Houra Nekounam
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Narges Mahmoodi
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Corresponding author. Sina Trauma and Surgery Research Center, Sina Hospital, Tehran University of Medical Sciences, Hasan-Abad Square, Imam Khomeini Ave., Tehran, 11365-3876, Iran.
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Abdal Dayem A, Lee SB, Lim KM, Kim A, Shin HJ, Vellingiri B, Kim YB, Cho SG. Bioactive peptides for boosting stem cell culture platform: Methods and applications. Biomed Pharmacother 2023; 160:114376. [PMID: 36764131 DOI: 10.1016/j.biopha.2023.114376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Peptides, short protein fragments, can emulate the functions of their full-length native counterparts. Peptides are considered potent recombinant protein alternatives due to their specificity, high stability, low production cost, and ability to be easily tailored and immobilized. Stem cell proliferation and differentiation processes are orchestrated by an intricate interaction between numerous growth factors and proteins and their target receptors and ligands. Various growth factors, functional proteins, and cellular matrix-derived peptides efficiently enhance stem cell adhesion, proliferation, and directed differentiation. For that, peptides can be immobilized on a culture plate or conjugated to scaffolds, such as hydrogels or synthetic matrices. In this review, we assess the applications of a variety of peptides in stem cell adhesion, culture, organoid assembly, proliferation, and differentiation, describing the shortcomings of recombinant proteins and their full-length counterparts. Furthermore, we discuss the challenges of peptide applications in stem cell culture and materials design, as well as provide a brief outlook on future directions to advance peptide applications in boosting stem cell quality and scalability for clinical applications in tissue regeneration.
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Affiliation(s)
- Ahmed Abdal Dayem
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Soo Bin Lee
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Kyung Min Lim
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Aram Kim
- Department of Urology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyun Jin Shin
- Department of Ophthalmology, Research Institute of Medical Science, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Balachandar Vellingiri
- Stem cell and Regenerative Medicine/Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab (CUPB), Bathinda 151401, Punjab, India
| | - Young Bong Kim
- Department of Biomedical Science & Engineering, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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Wang X, Ma Y, Lu F, Chang Q. The diversified hydrogels for biomedical applications and their imperative roles in tissue regeneration. Biomater Sci 2023; 11:2639-2660. [PMID: 36790251 DOI: 10.1039/d2bm01486f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Repair and regeneration of tissues after injury are complex pathophysiological processes. Microbial infection, malnutrition, and an ischemic and hypoxic microenvironment in the injured area can impede the typical healing cascade. Distinguished by biomimicry of the extracellular matrix, high aqueous content, and diverse functions, hydrogels have revolutionized clinical practices in tissue regeneration owing to their outstanding hydrophilicity, biocompatibility, and biodegradability. Various hydrogels such as smart hydrogels, nanocomposite hydrogels, and acellular matrix hydrogels are widely used for applications ranging from bench-scale to an industrial scale. In this review, some emerging hydrogels in the biomedical field are briefly discussed. The protective roles of hydrogels in wound dressings and their diverse biological effects on multiple tissues such as bone, cartilage, nerve, muscle, and adipose tissue are also discussed. The vehicle functions of hydrogels for chemicals and cell payloads are detailed. Additionally, this review emphasizes the particular characteristics of hydrogel products that promote tissue repair and reconstruction such as anti-infection, inflammation regulation, and angiogenesis.
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Affiliation(s)
- Xinhui Wang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
| | - Yuan Ma
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
| | - Feng Lu
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
| | - Qiang Chang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
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9
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Eve A. Transitions in development - an interview with Samira Musah. Development 2023; 150:dev201539. [PMID: 36637122 DOI: 10.1242/dev.201539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Samira Musah is an Assistant Professor in the Departments of Biomedical Engineering and Medicine at Duke University, USA. Samira's research focuses on leveraging pluripotent stem cells, bioengineering and organ-on-a-chip technologies to understand more about human kidney development, disease and therapy. We met with Samira over Microsoft Teams to hear more about her path to independence, mentors and her love of yoga.
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Lin CY, Ching YY, Wu SF, Lee YK, Fan HC, Su LY, Tsai SY, Chen YC, Shen CI, Su HL. Coating-Free Culture Medium for Establishing and Maintaining Human Induced Pluripotent Stem Cells. Cell Transplant 2023; 32:9636897231198172. [PMID: 37698258 PMCID: PMC10498698 DOI: 10.1177/09636897231198172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 09/13/2023] Open
Abstract
Cell expansion of human pluripotent stem cells (hPSCs) commonly depends on Matrigel as a coating matrix on two-dimensional (2D) culture plates and 3D microcarriers. However, the xenogenic Matrigel requires sophisticated quality-assurance processes to meet clinical requirements. In this study, we develop an innovative coating-free medium for expanding hPSCs. The xenofree medium supports the weekend-free culture and competitive growth of hPSCs on several cell culture plastics without an additional pre-coating process. The pluripotent stemness of the expanded cells is stably sustained for more than 10 passages, featured with high pluripotent marker expressions, normal karyotyping, and differentiating capacity for three germ layers. The expression levels of some integrins are reduced, compared with those of the hPSCs on Matrigel. This medium also successfully supports the clonal expansion and induced pluripotent stem cell establishment from mitochondrial-defective MELAS (mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes) patient's peripheral blood mononuclear cells. This innovative hPSC medium provides a straightforward scale-up process for producing clinical-orientated hPSCs by excluding the conventional coating procedure.
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Affiliation(s)
- Chih-Yao Lin
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Yun Ching
- Duogenic StemCells Corporation, Taichung, Taiwan
| | - Shih-Fang Wu
- The Joint Program of Tissue Engineering and Regenerative Medicine, National Chung Hsing University and National Health Research Institutes, Taichung, Taiwan
| | - Yi-Ko Lee
- Duogenic StemCells Corporation, Taichung, Taiwan
| | - Hueng-Chuen Fan
- Department of Pediatrics, Tungs’ Taichung MetroHarbor Hospital, Wuchi, Taichung, Taiwan
- Department of Nursing, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Liang-Yu Su
- Department of Life Science, National Taiwan University, Taipei, Taiwan
| | - Su-Yi Tsai
- Department of Life Science, National Taiwan University, Taipei, Taiwan
| | - Yu-Ching Chen
- The Joint Program of Tissue Engineering and Regenerative Medicine, National Chung Hsing University and National Health Research Institutes, Taichung, Taiwan
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua City, Taiwan
| | - Ching-I Shen
- Duogenic StemCells Corporation, Taichung, Taiwan
| | - Hong-Lin Su
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
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11
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Burt MA, Kalejaiye TD, Bhattacharya R, Dimitrakakis N, Musah S. Adriamycin-Induced Podocyte Injury Disrupts the YAP-TEAD1 Axis and Downregulates Cyr61 and CTGF Expression. ACS Chem Biol 2022; 17:3341-3351. [PMID: 34890187 DOI: 10.1021/acschembio.1c00678] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The most severe forms of kidney diseases are often associated with irreversible damage to the glomerular podocytes, the highly specialized epithelial cells that encase glomerular capillaries and regulate the removal of toxins and waste from the blood. Several studies revealed significant changes to podocyte cytoskeletal structure during disease onset, suggesting possible roles of cellular mechanosensing in podocyte responses to injury. Still, this topic remains underexplored partly due to the lack of appropriate in vitro models that closely recapitulate human podocyte biology. Here, we leveraged our previously established method for the derivation of mature podocytes from human induced pluripotent stem cells (hiPSCs) to help uncover the roles of yes-associated protein (YAP), a transcriptional coactivator and mechanosensor, in podocyte injury response. We found that while the total expression levels of YAP remain relatively unchanged during Adriamycin (ADR)-induced podocyte injury, the YAP target genes connective tissue growth factor (CTGF) and cysteine-rich angiogenic inducer 61 (Cyr61) are significantly downregulated. Intriguingly, TEAD1 is significantly downregulated in podocytes injured with ADR. By examining multiple independent modes of cellular injury, we found that CTGF and Cyr61 expression are downregulated only when podocytes were exposed to molecules known to disrupt the cell's mechanical integrity or cytoskeletal structure. To our knowledge, this is the first report that the YAP-TEAD1 signaling axis is disrupted when stem cell-derived human podocytes experience biomechanical injury. Together, these results could help improve the understanding of kidney disease mechanisms and highlight CTGF and Cyr61 as potential therapeutic targets or biomarkers for patient stratification.
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Affiliation(s)
- Morgan A Burt
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Titilola D Kalejaiye
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Rohan Bhattacharya
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for Biomolecular and Tissue Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Nikolaos Dimitrakakis
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
| | - Samira Musah
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for Biomolecular and Tissue Engineering, Duke University, Durham, North Carolina 27708, United States
- Department of Medicine, Division of Nephrology, Duke University School of Medicine, Durham, North Carolina 27710, United States
- Department of Cell Biology, Duke University, Durham, North Carolina 27710, United States
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12
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Cable J, Lutolf MP, Fu J, Park SE, Apostolou A, Chen S, Song CJ, Spence JR, Liberali P, Lancaster M, Meier AB, Pek NMQ, Wells JM, Capeling MM, Uzquiano A, Musah S, Huch M, Gouti M, Hombrink P, Quadrato G, Urenda JP. Organoids as tools for fundamental discovery and translation-a Keystone Symposia report. Ann N Y Acad Sci 2022; 1518:196-208. [PMID: 36177906 DOI: 10.1111/nyas.14874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Complex three-dimensional in vitro organ-like models, or organoids, offer a unique biological tool with distinct advantages over two-dimensional cell culture systems, which can be too simplistic, and animal models, which can be too complex and may fail to recapitulate human physiology and pathology. Significant progress has been made in driving stem cells to differentiate into different organoid types, though several challenges remain. For example, many organoid models suffer from high heterogeneity, and it can be difficult to fully incorporate the complexity of in vivo tissue and organ development to faithfully reproduce human biology. Successfully addressing such limitations would increase the viability of organoids as models for drug development and preclinical testing. On April 3-6, 2022, experts in organoid development and biology convened at the Keystone Symposium "Organoids as Tools for Fundamental Discovery and Translation" to discuss recent advances and insights from this relatively new model system into human development and disease.
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Affiliation(s)
| | - Matthias P Lutolf
- Laboratory of Stem Cell Bioengineering, Institute of Bioengineering, School of Life Sciences (SV) and School of Engineering (STI), Lausanne, Switzerland
- Institute of Chemical Sciences and Engineering, School of Basic Science (SB), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Roche Institute for Translational Bioengineering (ITB), Pharma Research and Early Development (pRED), F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Jianping Fu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
- Department of Cell & Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA
| | - Sunghee Estelle Park
- Department of Bioengineering and NSF Science and Technology Center for Engineering Mechanobiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Athanasia Apostolou
- Emulate Inc, Boston, Massachusetts, USA
- Department of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Shuibing Chen
- Department of Surgery, Weill Cornell Medical College, New York City, New York, USA
| | - Cheng Jack Song
- Keck Medicine of University of Southern California, Los Angeles, California, USA
| | - Jason R Spence
- Department of Cell & Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Prisca Liberali
- Friedrich Miescher Institute for Biomedical Research (FMI) and University of Basel, Basel, Switzerland
| | | | - Anna B Meier
- First Department of Medicine, Cardiology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine and Health, Munich, Germany
| | - Nicole Min Qian Pek
- Center for Stem Cell and Organoid Medicine (CuSTOM), Cincinnati, Ohio, USA
- Division of Pulmonary Biology, Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - James M Wells
- Center for Stem Cell and Organoid Medicine (CuSTOM), Cincinnati, Ohio, USA
- Division of Developmental Biology and Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Meghan M Capeling
- Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, Michigan, USA
| | - Ana Uzquiano
- Department of Stem Cell and Regenerative Biology, Harvard University
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Samira Musah
- Developmental and Stem Cell Biology Program and Division of Nephrology, Department of Medicine and Department of Cell Biology, Duke University School of Medicine, Durham, North Carolina, USA
- Center for Biomolecular and Tissue Engineering, Durham, North Carolina, USA
- Department of Biomedical Engineering, Pratt School of Engineering, Durham, North Carolina, USA
- Duke Regeneration Center, Duke University, Durham, North Carolina, USA
| | - Meritxell Huch
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Mina Gouti
- Stem Cell Modelling of Development & Disease Group, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Pleun Hombrink
- University Medical Center Utrecht and HUB Organoids, Utrecht, Netherlands
| | - Giorgia Quadrato
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine and Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, University of Southern California, Los Angeles, California, USA
| | - Jean-Paul Urenda
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine and Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, University of Southern California, Los Angeles, California, USA
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13
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Role of YAP as a Mechanosensing Molecule in Stem Cells and Stem Cell-Derived Hematopoietic Cells. Int J Mol Sci 2022; 23:ijms232314634. [PMID: 36498961 PMCID: PMC9737411 DOI: 10.3390/ijms232314634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/11/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022] Open
Abstract
Yes-associated protein (YAP) and WW domain-containing transcription regulator protein 1 (WWTR1, also known as TAZ) are transcriptional coactivators in the Hippo signaling pathway. Both are well-known regulators of cell proliferation and organ size control, and they have significant roles in promoting cell proliferation and differentiation. The roles of YAP and TAZ in stem cell pluripotency and differentiation have been extensively studied. However, the upstream mediators of YAP and TAZ are not well understood. Recently, a novel role of YAP in mechanosensing and mechanotransduction has been reported. The present review updates information on the regulation of YAP by mechanical cues such as extracellular matrix stiffness, fluid shear stress, and actin cytoskeleton tension in stem cell behaviors and differentiation. The review explores mesenchymal stem cell fate decisions, pluripotent stem cells (PSCs), self-renewal, pluripotency, and differentiation to blood products. Understanding how cells sense their microenvironment or niche and mimic those microenvironments in vitro could improve the efficiency of producing stem cell products and the efficacy of the products.
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14
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Zhou P, Qin L, Ge Z, Xie B, Huang H, He F, Ma S, Ren L, Shi J, Pei S, Dong G, Qi Y, Lan F. Design of chemically defined synthetic substrate surfaces for the in vitro maintenance of human pluripotent stem cells: A review. J Biomed Mater Res B Appl Biomater 2022; 110:1968-1990. [PMID: 35226397 DOI: 10.1002/jbm.b.35034] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/10/2022] [Accepted: 01/17/2022] [Indexed: 11/11/2022]
Abstract
Human pluripotent stem cells (hPSCs) have the potential of long-term self-renewal and differentiation into nearly all cell types in vitro. Prior to the downstream applications, the design of chemically defined synthetic substrates for the large-scale proliferation of quality-controlled hPSCs is critical. Although great achievements have been made, Matrigel and recombinant proteins are still widely used in the fundamental research and clinical applications. Therefore, much effort is still needed to improve the performance of synthetic substrates in the culture of hPSCs, realizing their commercial applications. In this review, we summarized the design of reported synthetic substrates and especially their limitations in terms of cell culture. Moreover, much attention was paid to the development of promising peptide displaying surfaces. Besides, the biophysical regulation of synthetic substrate surfaces as well as the three-dimensional culture systems were described.
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Affiliation(s)
- Ping Zhou
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Liying Qin
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Zhangjie Ge
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Biyao Xie
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Hongxin Huang
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Fei He
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Shengqin Ma
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Lina Ren
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Jiamin Shi
- Department of Laboratory Animal Centre, Changzhi Medical College, Changzhi, China
| | - Suying Pei
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Genxi Dong
- School of Stomatology, Lanzhou University, Lanzhou, China
| | - Yongmei Qi
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Feng Lan
- Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen Key Laboratory of Cardiovascular Disease, State Key Laboratory of Cardiovascular Disease, Shenzhen, China
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15
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Miniaturized droplet microarray platform enables maintenance of human induced pluripotent stem cell pluripotency. Mater Today Bio 2021; 12:100153. [PMID: 34765963 PMCID: PMC8569722 DOI: 10.1016/j.mtbio.2021.100153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/17/2021] [Accepted: 10/23/2021] [Indexed: 11/29/2022] Open
Abstract
The capacity of human induced pluripotent stem cells (hiPSCs) for indefinite self-renewal warrants their application in disease modeling, drug discovery, toxicity assays and efficacy screening. However, their poor proliferation ability, inability to adhere to surfaces without Matrigel coating and tendency to spontaneously differentiate in vitro hinder the application of hiPSCs in these fields. Here we study the ability to culture hiPSCs inside 200 nL droplets on the droplet microarray (DMA) platform. We demonstrate that (1) hiPSCs can attach to the Matrigel (MG)-free surface of DMA and show good viability after 24 h culture; (2) hiPSC do not spontaneously differentiate when cultured on the MG-free surface of DMAs; (3) culturing of hiPSCs in 200 nL as compared to 2 mL culture leads to higher expression of the Nanog pluripotency marker. Overall, the results demonstrate the possibility to culture undifferentiated hiPSCs in 200 nL droplets on DMA, thereby opening the possibility for high-throughput screenings of hiPSCs with various factors without compromising the results through the involvement of animal-derived materials, such as Matrigel.
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16
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Yin S, Cao Y. Hydrogels for Large-Scale Expansion of Stem Cells. Acta Biomater 2021; 128:1-20. [PMID: 33746032 DOI: 10.1016/j.actbio.2021.03.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/25/2021] [Accepted: 03/10/2021] [Indexed: 12/18/2022]
Abstract
Stem cells demonstrate considerable promise for various preclinical and clinical applications, including drug screening, disease treatments, and regenerative medicine. Producing high-quality and large amounts of stem cells is in demand for these applications. Despite challenges, as hydrogel-based cell culture technology has developed, tremendous progress has been made in stem cell expansion and directed differentiation. Hydrogels are soft materials with abundant water. Many hydrogel properties, including biodegradability, mechanical strength, and porosity, have been shown to play essential roles in regulating stem cell proliferation and differentiation. The biochemical and physical properties of hydrogels can be specifically tailored to mimic the native microenvironment that various stem cells reside in vivo. A few hydrogel-based systems have been developed for successful stem cell cultures and expansion in vitro. In this review, we summarize various types of hydrogels that have been designed to effectively enhance the proliferation of hematopoietic stem cells (HSCs), mesenchymal stem/stromal cells (MSCs), and pluripotent stem cells (PSCs), respectively. According to each stem cell type's preference, we also discuss strategies for fabricating hydrogels with biochemical and mechanical cues and other characteristics representing microenvironments of stem cells in vivo. STATEMENT OF SIGNIFICANCE: In this review article we summarize current progress on the construction of hydrogel systems for the culture and expansion of various stem cells, including hematopoietic stem cells (HSCs), mesenchymal stem/stromal cells (MSCs), and pluripotent stem cells (PSCs). The Significance includes: (1) Provide detailed discussion on the stem cell niches that should be considered for stem cell in vitro expansion. (2) Summarize various strategies to construct hydrogels that can largely recapture the microenvironment of native stem cells. (3) Suggest a few future directions that can be implemented to improve current in vitro stem cell expansion systems.
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Affiliation(s)
- Sheng Yin
- National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, 210093, China; Chemistry and Biomedicine innovation center, Nanjing University, Nanjing, 210093, China; Institute for Brain Sciences, Nanjing University, Nanjing, 210093, China; Shenzhen Research Institute of Nanjing University, Shenzhen, China, 518057
| | - Yi Cao
- National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, 210093, China; Chemistry and Biomedicine innovation center, Nanjing University, Nanjing, 210093, China; Institute for Brain Sciences, Nanjing University, Nanjing, 210093, China; Shenzhen Research Institute of Nanjing University, Shenzhen, China, 518057.
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17
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Li Y, Wang J, Zhong W. Regulation and mechanism of YAP/TAZ in the mechanical microenvironment of stem cells (Review). Mol Med Rep 2021; 24:506. [PMID: 33982785 PMCID: PMC8134874 DOI: 10.3892/mmr.2021.12145] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 02/02/2021] [Indexed: 12/31/2022] Open
Abstract
Stem cells receive cues from their physical and mechanical microenvironment via mechanosensing and mechanotransduction. These cues affect proliferation, self‑renewal and differentiation into specific cell fates. A growing body of evidence suggests that yes‑associated protein (YAP) and transcriptional coactivator with PDZ‑binding motif (TAZ) mechanotransduction is key for driving stem cell behavior and regeneration via the Hippo and other signaling pathways. YAP/TAZ receive a range of physical cues, including extracellular matrix stiffness, cell geometry, flow shear stress and mechanical forces in the cytoskeleton, and translate them into cell‑specific transcriptional programs. However, the mechanism by which mechanical signals regulate YAP/TAZ activity in stem cells is not fully understand. The present review summarizes the current knowledge of the mechanisms involved in YAP/TAZ regulation on the physical and mechanical microenvironment, as well as its potential effects on stem cell differentiation.
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Affiliation(s)
- Ying Li
- Department of Orthopaedics Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Jinming Wang
- Department of Orthopaedics Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Weiliang Zhong
- Department of Orthopaedics Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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18
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The effect of retinal scaffold modulus on performance during surgical handling. Exp Eye Res 2021; 207:108566. [PMID: 33838142 DOI: 10.1016/j.exer.2021.108566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/19/2021] [Accepted: 03/30/2021] [Indexed: 02/02/2023]
Abstract
Emerging treatment strategies for retinal degeneration involve replacing lost photoreceptors using supportive scaffolds to ensure cells survive the implantation process. While many design aspects of these scaffolds, including material chemistry and microstructural cues, have been studied in depth, a full set of design constraints has yet to be established. For example, while known to be important in other tissues and systems, the influence of mechanical properties on surgical handling has not been quantified. In this study, photocrosslinked poly(ethylene glycol) dimethacrylate (PEGDMA) was used as a model polymer to study the effects of scaffold modulus (stiffness) on surgical handling, independent of material chemistry. This was achieved by modulating the molecular weight and concentrations of the PEGDMA in various prepolymer solutions. Scaffold modulus of each formulation was measured using photo-rheology, which enabled the collection of real-time polymerization data. In addition to measuring scaffold mechanical properties, this approach gave insight on polymerization kinetics, which were used to determine the polymerization time required for each sample. Scaffold handling characteristics were qualitatively evaluated using both in vitro and ex vivo trials that mimicked the surgical procedure. In these trials, scaffolds with shear moduli above 35 kPa performed satisfactorily, while those below this limit performed poorly. In other words, scaffolds below this modulus were too fragile for reliable transplantation. To better compare these results with literature values, the compressive modulus was measured for select samples, with the lower shear modulus limit corresponding to roughly 115 kPa compressive modulus. While an upper mechanical property limit was not readily apparent from these results, there was increased variability in surgical handling performance in samples with shear moduli above 800 kPa. Overall, the knowledge presented here provides important groundwork for future studies designed to examine additional retinal scaffold considerations, including the effect of scaffold mechanical properties on retinal progenitor cell fate.
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19
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Virdi JK, Pethe P. Biomaterials Regulate Mechanosensors YAP/TAZ in Stem Cell Growth and Differentiation. Tissue Eng Regen Med 2021; 18:199-215. [PMID: 33230800 PMCID: PMC8012461 DOI: 10.1007/s13770-020-00301-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/15/2020] [Accepted: 09/12/2020] [Indexed: 02/07/2023] Open
Abstract
Tissue-resident stem cells are surrounded by a microenvironment known as 'stem cell niche' which is specific for each stem cell type. This niche comprises of cell-intrinsic and -extrinsic factors like biochemical and biophysical signals, which regulate stem cell characteristics and differentiation. Biochemical signals have been thoroughly studied however, the effect of biophysical signals on stem cell regulation is yet to be completely understood. Biomaterials have aided in addressing this issue since they can provide a defined and tuneable microenvironment resembling in vivo conditions. We review various biomaterials used in many studies which have shown a connection between biomaterial-generated mechanical signals and alteration in stem cell behaviour. Researchers probed to understand the mechanism of mechanotransduction and reported that the signals from the extracellular matrix regulate a transcription factor yes-associated protein (YAP)/transcriptional coactivator with PDZ-binding motif (TAZ), which is a downstream-regulator of the Hippo pathway and it transduces the mechanical signals inside the nucleus. We highlight the role of the YAP/TAZ as mechanotransducers in stem cell self-renewal and differentiation in response to substrate stiffness, also the possibility of mechanobiology as the emerging field of regenerative medicines and three-dimensional tissue printing.
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Affiliation(s)
- Jasmeet Kaur Virdi
- Department of Biological Science, Sunandan Divatia School of Science, SVKM's NMIMS (Deemed to-be) University, Mumbai, India
| | - Prasad Pethe
- Symbiosis Centre for Stem Cell Research (SCSCR), Symbiosis International University, Lavale, Mulshi, Pune, 412115, India.
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20
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Engineering Biophysical Cues for Controlled 3D Differentiation of Endoderm Derivatives. Methods Mol Biol 2021. [PMID: 33340355 DOI: 10.1007/978-1-0716-1174-6_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Biophysical cues synergize with biochemical cues to drive differentiation of pluripotent stem cells through specific phenotypic trajectory. Tools to manipulate the cell biophysical environment and identify the influence of specific environment perturbation in the presence of combinatorial inputs will be critical to control the development trajectory. Here we describe the procedure to perturb biophysical environment of pluripotent stem cells while maintaining them in 3D culture configuration. We also discuss a high-throughput platform for combinatorial perturbation of the cell microenvironment, and detail a statistical procedure to extract dominant environmental influences.
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21
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Naqvi SM, McNamara LM. Stem Cell Mechanobiology and the Role of Biomaterials in Governing Mechanotransduction and Matrix Production for Tissue Regeneration. Front Bioeng Biotechnol 2020; 8:597661. [PMID: 33381498 PMCID: PMC7767888 DOI: 10.3389/fbioe.2020.597661] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/09/2020] [Indexed: 12/11/2022] Open
Abstract
Mechanobiology has underpinned many scientific advances in understanding how biophysical and biomechanical cues regulate cell behavior by identifying mechanosensitive proteins and specific signaling pathways within the cell that govern the production of proteins necessary for cell-based tissue regeneration. It is now evident that biophysical and biomechanical stimuli are as crucial for regulating stem cell behavior as biochemical stimuli. Despite this, the influence of the biophysical and biomechanical environment presented by biomaterials is less widely accounted for in stem cell-based tissue regeneration studies. This Review focuses on key studies in the field of stem cell mechanobiology, which have uncovered how matrix properties of biomaterial substrates and 3D scaffolds regulate stem cell migration, self-renewal, proliferation and differentiation, and activation of specific biological responses. First, we provide a primer of stem cell biology and mechanobiology in isolation. This is followed by a critical review of key experimental and computational studies, which have unveiled critical information regarding the importance of the biophysical and biomechanical cues for stem cell biology. This review aims to provide an informed understanding of the intrinsic role that physical and mechanical stimulation play in regulating stem cell behavior so that researchers may design strategies that recapitulate the critical cues and develop effective regenerative medicine approaches.
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Affiliation(s)
- S M Naqvi
- Mechanobiology and Medical Device Research Group, Department of Biomedical Engineering, College of Engineering and Informatics, National University of Ireland Galway, Galway, Ireland
| | - L M McNamara
- Mechanobiology and Medical Device Research Group, Department of Biomedical Engineering, College of Engineering and Informatics, National University of Ireland Galway, Galway, Ireland
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22
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Xie M, Li J, Zhang S, Zhu D, Mei X, Wang Z, Cheng X, Li Z, Wang S, Cheng K. A trifunctional contraceptive gel enhances the safety and quality of sexual intercourse. Bioact Mater 2020; 6:1777-1788. [PMID: 33336110 PMCID: PMC7724154 DOI: 10.1016/j.bioactmat.2020.11.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 12/15/2022] Open
Abstract
Current contraceptive methods come with a number of drawbacks, including low efficacy, in the case of commercial contraceptive gels, and a reduction in the quality of sexual intercourse, in the case of condoms. Adding pharmacologically-active agents to contraceptive gels holds the potential to improve sexual experience, and hardbor safety and hygiene. In this study, we fabricated a Carbomer-based contraceptive gel consisting of three agents: tenofovir, gossypol acetate, and nitroglycerin (TGN), with pH adjusted to 4.5 (to be compatible with the vagina). In vitro, the gossypol component of the contraceptive gel proved to be a significantly effective spermicide. When the concentration of gossypol acetate was 10 mg/ml, the spermicidal ability reached 100% after 30s. In addition, tenofovir in the gel significantly inhibited lentiviral transfection efficiency in cell-containing media. In 6 pairs of rats, the gel successfully prevented all females from conceiving after successful mating. Moreover, increased sexual frequency and enhanced erection, which were promoted by the nitroglycerin in the components, were observed in male rats that had the gel applied to their penises. This novel TGN contraceptive gel yielded a higher contraceptive success rate than that of the commercial contraceptive gel (Contragel®). In addition, it has the added benefits to prevent sexually transmitted diseases and improve male libido and erection function during sexual intercourse. Combining three FDA-approved and marketed agents together, our trifunctional TGN gel has a great potential for further translation and commercialization. Our novel TGN contraceptive gel yielded a higher contraceptive success rate than that of a commercial product (Contragel®). The TGN gel inhibits viral infection and shows great potential to prevent sexually transmitted diseases. Male libido and erection function are enhanced after topical application of the TGN gel. Combining three FDA-approved agents together, our TGN gel has a great potential for translation and commercialization.
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Affiliation(s)
- Mengjie Xie
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China.,Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
| | - Junlang Li
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
| | - Sichen Zhang
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA.,Department of Gynecology and Obstetrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Dashuai Zhu
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
| | - Xuan Mei
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
| | - Zhenzhen Wang
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
| | - Xiao Cheng
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
| | - Zhenhua Li
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
| | - Shaowei Wang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China.,Department of Gynecology and Obstetrics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, PR China
| | - Ke Cheng
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, 27607, USA.,Joint Department of Biomedical Engineering, North Carolina State University & University of North Carolina at Chapel Hill, Raleigh, NC, 27607, USA
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23
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Luo F, Luo S, Qian W, Zhang L, Chen C, Xu M, Wang G, Wang Z, Wang J, Wang W. Developmental deficits and early signs of neurodegeneration revealed by PD patient derived dopamine neurons. Stem Cell Res 2020; 49:102027. [PMID: 33059129 DOI: 10.1016/j.scr.2020.102027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 08/07/2020] [Accepted: 09/29/2020] [Indexed: 12/13/2022] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease affecting millions of elder people due to the degeneration of dopamine neurons in the striatum and substantia nigra. The clinical manifestations of PD include tremor, rigidity, bradykinesia and postural instability. Studying PD is challenging due to two obstacles: 1) disease models such as primary neurons or animal models usually couldn't recapitulate the disease phenotype, and 2) accessibility of human autopsied brain samples is very limited if not impossible. Induced pluripotent stem cells (iPSCs)-derived neuronal cells from patients emerge as an ideal in vitro model for disease modeling and drug development. Here we describe a cell density-dependent method for preparing functional hiPSC-derived dopamine neurons (iDAs) with ~90% purity (TH-positive cells). iDAs derived from PD patient exhibit the disease-related phenotypes, for example, slowed morphogenesis, reduced dopamine release, impaired mitochondrial function, and α-synuclein accumulation as early as 35 days after induction. Furthermore, we found that the effects of cell density are different between iDA development stages, whereas high cell density increases stress for early neural progenitor cells (NPCs), but are neural-protective for mature iDAs, high density also favors morphogenesis. Hence, using stage and density-dependent strategies we can obtain high quality iDAs, which are critical for disease modeling, drug development and cell replacement therapy.
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Affiliation(s)
- Fang Luo
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Sushan Luo
- Department of Neurology & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Wenjing Qian
- Department of Neurology, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Lin Zhang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Chen
- Department of Neurology & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Meimei Xu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Guangling Wang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Zhongfeng Wang
- Department of Neurology, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
| | - Jian Wang
- Department of Neurology & National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - Wenyuan Wang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China; Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China.
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24
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Lattuada E, Leo M, Caprara D, Salvatori L, Stoppacciaro A, Sciortino F, Filetici P. DNA-GEL, Novel Nanomaterial for Biomedical Applications and Delivery of Bioactive Molecules. Front Pharmacol 2020; 11:01345. [PMID: 33013376 PMCID: PMC7500453 DOI: 10.3389/fphar.2020.01345] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/11/2020] [Indexed: 01/19/2023] Open
Abstract
Novel DNA materials promise unpredictable perspectives for applications in cell biology. The realization of DNA-hydrogels built by a controlled association of DNA nanostars, whose binding can be tuned with minor changes in the nucleotide sequences, has been recently described. DNA hydrogels, with specific gelation properties that can be reassambled in desired culture media supplemented with drugs, RNA, DNA molecules and other bioactive compounds offer the opportunity to develop a novel nanomaterial for the delivery of single or multiple drugs in tumor tissues as an innovative and promising strategy. We provide here a comprehensive description of different, recently realized DNA-gels with the perspective of stimulating their biomedical application. Finally, we discuss the possibility to design sophisticated 3D tissue-like DNA-gels incorporating cell spheroids or single cells for the assembly of a novel kind of cellular matrix as a preclinical investigation for the implementation of tools for in vivo delivery of bioactive molecules.
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Affiliation(s)
- Enrico Lattuada
- Department of Physics, Sapienza University of Rome, Rome, Italy
| | - Manuela Leo
- Department of Physics, Sapienza University of Rome, Rome, Italy
| | - Debora Caprara
- Department of Physics, Sapienza University of Rome, Rome, Italy
| | - Luisa Salvatori
- Institute of Molecular Biology and Pathology - CNR, Sapienza University of Rome, Rome, Italy
| | - Antonella Stoppacciaro
- Department of Clinical and Molecular Medicine, Sant'Andrea Hospital, Sapienza University of Rome, Rome, Italy
| | | | - Patrizia Filetici
- Institute of Molecular Biology and Pathology - CNR, Sapienza University of Rome, Rome, Italy
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25
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Zhang Y, Tang C, Span PN, Rowan AE, Aalders TW, Schalken JA, Adema GJ, Kouwer PHJ, Zegers MMP, Ansems M. Polyisocyanide Hydrogels as a Tunable Platform for Mammary Gland Organoid Formation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001797. [PMID: 32999851 PMCID: PMC7509700 DOI: 10.1002/advs.202001797] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Indexed: 05/20/2023]
Abstract
In the last decade, organoid technology has developed as a primary research tool in basic biological and clinical research. The reliance on poorly defined animal-derived extracellular matrix, however, severely limits its application in regenerative and translational medicine. Here, a well-defined, synthetic biomimetic matrix based on polyisocyanide (PIC) hydrogels that support efficient and reproducible formation of mammary gland organoids (MGOs) in vitro is presented. Only decorated with the adhesive peptide RGD for cell binding, PIC hydrogels allow MGO formation from mammary fragments or from purified single mammary epithelial cells. The cystic organoids maintain their capacity to branch for over two months, which is a fundamental and complex feature during mammary gland development. It is found that small variations in the 3D matrix give rise to large changes in the MGO: the ratio of the main cell types in the MGO is controlled by the cell-gel interactions via the cell binding peptide density, whereas gel stiffness controls colony formation efficiency, which is indicative of the progenitor density. Simple hydrogel modifications will allow for future introduction and customization of new biophysical and biochemical parameters, making the PIC platform an ideal matrix for in depth studies into organ development and for application in disease models.
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Affiliation(s)
- Ying Zhang
- Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 135NijmegenAJ 6525The Netherlands
- Radiotherapy & OncoImmunology LaboratoryRadboud University Medical CenterGeert Grooteplein 32NijmegenGA6525The Netherlands
| | - Chunling Tang
- Radiotherapy & OncoImmunology LaboratoryRadboud University Medical CenterGeert Grooteplein 32NijmegenGA6525The Netherlands
| | - Paul N. Span
- Radiotherapy & OncoImmunology LaboratoryRadboud University Medical CenterGeert Grooteplein 32NijmegenGA6525The Netherlands
| | - Alan E. Rowan
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQLD4072Australia
| | - Tilly W. Aalders
- Experimental UrologyRadboud University Medical CenterGeert Grooteplein 32NijmegenGA6525The Netherlands
| | - Jack A. Schalken
- Experimental UrologyRadboud University Medical CenterGeert Grooteplein 32NijmegenGA6525The Netherlands
| | - Gosse J. Adema
- Radiotherapy & OncoImmunology LaboratoryRadboud University Medical CenterGeert Grooteplein 32NijmegenGA6525The Netherlands
| | - Paul H. J. Kouwer
- Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 135NijmegenAJ 6525The Netherlands
| | - Mirjam M. P. Zegers
- Department of Cell BiologyRadboud Institute for Molecular SciencesRadboud University Medical CenterGeert Grooteplein 28NijmegenGA6525The Netherlands
| | - Marleen Ansems
- Radiotherapy & OncoImmunology LaboratoryRadboud University Medical CenterGeert Grooteplein 32NijmegenGA6525The Netherlands
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26
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Aisenbrey EA, Murphy WL. Synthetic alternatives to Matrigel. NATURE REVIEWS. MATERIALS 2020; 5:539-551. [PMID: 32953138 PMCID: PMC7500703 DOI: 10.1038/s41578-020-0199-8] [Citation(s) in RCA: 390] [Impact Index Per Article: 97.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/31/2020] [Indexed: 05/19/2023]
Abstract
Matrigel, a basement-membrane matrix extracted from Engelbreth-Holm-Swarm mouse sarcomas, has been used for more than four decades for a myriad of cell culture applications. However, Matrigel is limited in its applicability to cellular biology, therapeutic cell manufacturing and drug discovery owing to its complex, ill-defined and variable composition. Variations in the mechanical and biochemical properties within a single batch of Matrigel - and between batches - have led to uncertainty in cell culture experiments and a lack of reproducibility. Moreover, Matrigel is not conducive to physical or biochemical manipulation, making it difficult to fine-tune the matrix to promote intended cell behaviours and achieve specific biological outcomes. Recent advances in synthetic scaffolds have led to the development of xenogenic-free, chemically defined, highly tunable and reproducible alternatives. In this Review, we assess the applications of Matrigel in cell culture, regenerative medicine and organoid assembly, detailing the limitations of Matrigel and highlighting synthetic scaffold alternatives that have shown equivalent or superior results. Additionally, we discuss the hurdles that are limiting a full transition from Matrigel to synthetic scaffolds and provide a brief perspective on the future directions of synthetic scaffolds for cell culture applications.
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Affiliation(s)
| | - William L. Murphy
- Department of Biomedical Engineering, University of Wisconsin–Madison, WI, USA
- Department of Orthopedics and Rehabilitation, University of Wisconsin–Madison, WI, USA
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27
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Berger C, Bjørlykke Y, Hahn L, Mühlemann M, Kress S, Walles H, Luxenhofer R, Ræder H, Metzger M, Zdzieblo D. Matrix decoded - A pancreatic extracellular matrix with organ specific cues guiding human iPSC differentiation. Biomaterials 2020; 244:119766. [PMID: 32199284 DOI: 10.1016/j.biomaterials.2020.119766] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/29/2019] [Accepted: 01/04/2020] [Indexed: 12/19/2022]
Abstract
The extracellular matrix represents a dynamic microenvironment regulating essential cell functions in vivo. Tissue engineering approaches aim to recreate the native niche in vitro using biological scaffolds generated by organ decellularization. So far, the organ specific origin of such scaffolds was less considered and potential consequences for in vitro cell culture remain largely elusive. Here, we show that organ specific cues of biological scaffolds affect cellular behavior. In detail, we report on the generation of a well-preserved pancreatic bioscaffold and introduce a scoring system allowing standardized inter-study quality assessment. Using multiple analysis tools for in-depth-characterization of the biological scaffold, we reveal unique compositional, physico-structural, and biophysical properties. Finally, we prove the functional relevance of the biological origin by demonstrating a regulatory effect of the matrix on multi-lineage differentiation of human induced pluripotent stem cells emphasizing the significance of matrix specificity for cellular behavior in artificial microenvironments.
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Affiliation(s)
- Constantin Berger
- Chair Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Yngvild Bjørlykke
- Department of Clinical Science, University of Bergen, Bergen, Norway; Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
| | - Lukas Hahn
- Functional Polymer Materials, Department of Chemistry and Pharmacy and Bavarian Polymer Institute, Würzburg University, Würzburg, Germany
| | - Markus Mühlemann
- Chair Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Sebastian Kress
- Chair Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Heike Walles
- Translational Center Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research ISC, Würzburg, Germany; Otto-von Guericke University, Core Facility Tissue Engineering, Magdeburg, Germany
| | - Robert Luxenhofer
- Functional Polymer Materials, Department of Chemistry and Pharmacy and Bavarian Polymer Institute, Würzburg University, Würzburg, Germany
| | - Helge Ræder
- Department of Clinical Science, University of Bergen, Bergen, Norway; Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
| | - Marco Metzger
- Chair Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany; Translational Center Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research ISC, Würzburg, Germany
| | - Daniela Zdzieblo
- Chair Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany; Translational Center Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research ISC, Würzburg, Germany.
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28
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Chan SW, Rizwan M, Yim EKF. Emerging Methods for Enhancing Pluripotent Stem Cell Expansion. Front Cell Dev Biol 2020; 8:70. [PMID: 32117992 PMCID: PMC7033584 DOI: 10.3389/fcell.2020.00070] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/27/2020] [Indexed: 12/12/2022] Open
Abstract
Pluripotent stem cells (PSCs) have great potential to revolutionize the fields of tissue engineering and regenerative medicine as well as stem cell therapeutics. However, the end goal of using PSCs for therapeutic use remains distant due to limitations in current PSC production. Conventional methods for PSC expansion have limited potential to be scaled up to produce the number of cells required for the end-goal of therapeutic use due to xenogenic components, high cost or low efficiency. In this mini review, we explore novel methods and emerging technologies of improving PSC expansion: the use of the two-dimensional mechanobiological strategies of topography and stiffness and the use of three-dimensional (3D) expansion methods including encapsulation, microcarrier-based culture, and suspension culture. Additionally, we discuss the limitations of conventional PSC expansion methods as well as the challenges in implementing non-conventional methods.
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Affiliation(s)
- Sarah W. Chan
- Department of Chemical Engineering, Faculty of Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Muhammad Rizwan
- Department of Chemical Engineering, Faculty of Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Evelyn K. F. Yim
- Department of Chemical Engineering, Faculty of Engineering, University of Waterloo, Waterloo, ON, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, Canada
- Centre for Biotechnology and Bioengineering, University of Waterloo, Waterloo, ON, Canada
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29
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Di Iorio D, Huskens J. Surface Modification with Control over Ligand Density for the Study of Multivalent Biological Systems. ChemistryOpen 2020; 9:53-66. [PMID: 31921546 PMCID: PMC6948118 DOI: 10.1002/open.201900290] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/11/2019] [Indexed: 12/30/2022] Open
Abstract
In the study of multivalent interactions at interfaces, as occur for example at cell membranes, the density of the ligands or receptors displayed at the interface plays a pivotal role, affecting both the overall binding affinities and the valencies involved in the interactions. In order to control the ligand density at the interface, several approaches have been developed, and they concern the functionalization of a wide range of materials. Here, different methods employed in the modification of surfaces with controlled densities of ligands are being reviewed. Examples of such methods encompass the formation of self-assembled monolayers (SAMs), supported lipid bilayers (SLBs) and polymeric layers on surfaces. Particular emphasis is given to the methods employed in the study of different types of multivalent biological interactions occurring at the functionalized surfaces and their working principles.
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Affiliation(s)
- Daniele Di Iorio
- Molecular NanoFabrication group MESA+ Institute for NanotechnologyUniversity of TwenteEnschedeThe Netherlands
| | - Jurriaan Huskens
- Molecular NanoFabrication group MESA+ Institute for NanotechnologyUniversity of TwenteEnschedeThe Netherlands
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30
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McKee C, Brown C, Chaudhry GR. Self-Assembling Scaffolds Supported Long-Term Growth of Human Primed Embryonic Stem Cells and Upregulated Core and Naïve Pluripotent Markers. Cells 2019; 8:cells8121650. [PMID: 31888235 PMCID: PMC6952907 DOI: 10.3390/cells8121650] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 12/14/2022] Open
Abstract
The maintenance and expansion of human embryonic stem cells (ESCs) in two-dimensional (2-D) culture is technically challenging, requiring routine manipulation and passaging. We developed three-dimensional (3-D) scaffolds to mimic the in vivo microenvironment for stem cell proliferation. The scaffolds were made of two 8-arm polyethylene glycol (PEG) polymers functionalized with thiol (PEG-8-SH) and acrylate (PEG-8-Acr) end groups, which self-assembled via a Michael addition reaction. When primed ESCs (H9 cells) were mixed with PEG polymers, they were encapsulated and grew for an extended period, while maintaining their viability, self-renewal, and differentiation potential both in vitro and in vivo. Three-dimensional (3-D) self-assembling scaffold-grown cells displayed an upregulation of core pluripotency genes, OCT4, NANOG, and SOX2. In addition, the expression of primed markers decreased, while the expression of naïve markers substantially increased. Interestingly, the expression of mechanosensitive genes, YAP and TAZ, was also upregulated. YAP inhibition by Verteporfin abrogated the increased expression of YAP/TAZ as well as core and naïve pluripotent markers. Evidently, the 3-D culture conditions induced the upregulation of makers associated with a naïve state of pluripotency in the primed cells. Overall, our 3-D culture system supported the expansion of a homogenous population of ESCs and should be helpful in advancing their use for cell therapy and regenerative medicine.
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Affiliation(s)
- Christina McKee
- Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA; (C.M.); (C.B.)
- OU-WB Institute for Stem Cell and Regenerative Medicine, Rochester, MI 48309, USA
| | - Christina Brown
- Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA; (C.M.); (C.B.)
- OU-WB Institute for Stem Cell and Regenerative Medicine, Rochester, MI 48309, USA
| | - G. Rasul Chaudhry
- Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA; (C.M.); (C.B.)
- OU-WB Institute for Stem Cell and Regenerative Medicine, Rochester, MI 48309, USA
- Correspondence: ; Tel.: +1-248-370-3350
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31
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Paiva S, Joanne P, Migdal C, Soler EL, Hovhannisyan Y, Nicolas A, Agbulut O. Polyacrylamide Hydrogels with Rigidity-Independent Surface Chemistry Show Limited Long-Term Maintenance of Pluripotency of Human Induced Pluripotent Stem Cells on Soft Substrates. ACS Biomater Sci Eng 2019; 6:340-351. [DOI: 10.1021/acsbiomaterials.9b01189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Solenne Paiva
- Sorbonne Université, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, 75005 Paris, France
| | - Pierre Joanne
- Sorbonne Université, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, 75005 Paris, France
| | - Camille Migdal
- Univ. Grenoble Alpes, CNRS, LTM, 38000 Grenoble, France
- Univ. Grenoble Alpes, CEA, Inserm, BIG-BGE, 38000 Grenoble, France
| | | | - Yeranuhi Hovhannisyan
- Sorbonne Université, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, 75005 Paris, France
| | - Alice Nicolas
- Univ. Grenoble Alpes, CNRS, LTM, 38000 Grenoble, France
| | - Onnik Agbulut
- Sorbonne Université, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, 75005 Paris, France
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32
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Morgado PI, Palacios M, Larrain J. In situ injectable hydrogels for spinal cord regeneration: advances from the last 10 years. Biomed Phys Eng Express 2019; 6:012002. [PMID: 33438588 DOI: 10.1088/2057-1976/ab52e8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Spinal cord injury (SCI) is a tremendously devastating disorder with no effective therapy. Neuroprotective strategies have been applied aiming to prevent secondary cell death but no successful and robust effects have been observed. Recently, combinatorial approaches using biomaterials with cells and/or growth factors have demonstrated promising therapeutic effects because of the improvement of axonal growth and in vivo functional recovery in model organisms. In situ injectable hydrogels are a particularly attractive neuroregenerative approach to improve spinal cord repair and regeneration since they can be precisely injected into the lesion site filling the space prior to gelification, decrease scarring and promote axon growth due to the hydrogel's soft structure. Important advances regarding the use of hydrogels as potential therapeutic approaches has been reported during the last 10 years. Injectable alginate hydrogel loaded with GDNF, thermoresponsives heparin-poloxamer loaded with NGF and imidazole-poly(organophosphazenes) hydrogels are just three examples of biomaterials that can promote neurite, axon growth and improve functional recovery in hemisected and resected rats. Here we will review the status of in situ injectable hydrogels for spinal cord regeneration with special focus in the advantages of using hydrogel scaffolds, the ideal polymers to be used, the gelification process and the cells or growth factors combined. The in vitro and in vivo results reported for those biomaterials will be presented, compared and discussed.
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33
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Dang-I AY, Kousar A, Liu J, Mukwaya V, Zhao C, Wang F, Hou L, Feng CL. Mechanically Stable C2-Phenylalanine Hybrid Hydrogels for Manipulating Cell Adhesion. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28657-28664. [PMID: 31321967 DOI: 10.1021/acsami.9b08655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tuning of the viscoelastic properties of supramolecular hydrogels to be used as biological material substrates in tissue engineering has become significantly relevant in recent years due to their ability to influence cell fate. In the quest to enhance the stability and mechanical properties of a derived C2-phenylalanine gelator (LPF), derivatives of the polysaccharide dextran were incorporated as additives to promote hydrogen bonding and π-π stacking with the gelator. Dextran was esterified to yield carboxymethyl dextran (CMDH), which was subsequently amidated to furnish amino dextran (AD), the resulting hybrid hydrogels were denoted as LPF-ADx and LPF-CMDHx, where x represents the amount of AD and CMDH (mg). The LPF gelator interacted with the carboxyl and amino functional groups of the CMDH and AD, respectively, through hydrogen bonding and π-π stacking, resulting in mechanically stable hydrogels. Morphological studies revealed that the hybrid hydrogels were formed as a result of dense highly branched thin and broad fibers for LPF-AD and LPF-CMDH, respectively. Rheological studies confirmed the superiority of the hybrid hydrogels over the neat hydrogel, where LPF-CMDH3 exhibited the best mechanical properties with an improved elastic modulus of 11 654 Pa over 1518 and 140 Pa for LPF-AD4.5 and LPF, respectively. The adhesion and spreading behavior of NIH 3T3 fibroblast cells were significantly improved on the LPF-CMDH3 substrate owing to their enhanced mechanical properties. The tuning of the mechanical properties of the therein hydrogels via the facile incorporation of biodegradable and biocompatible functionalized additives opens up avenues for strengthening the supposed weak supramolecular gelators and hence increasing their potential of being employed largely in the field of tissue engineering.
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Affiliation(s)
- Auphedeous Y Dang-I
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiaotong University , Dongchuan Rd 800 , 200240 Shanghai , China
| | - Ayesha Kousar
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiaotong University , Dongchuan Rd 800 , 200240 Shanghai , China
| | - Jinying Liu
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiaotong University , Dongchuan Rd 800 , 200240 Shanghai , China
| | - Vincent Mukwaya
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiaotong University , Dongchuan Rd 800 , 200240 Shanghai , China
| | - Changli Zhao
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiaotong University , Dongchuan Rd 800 , 200240 Shanghai , China
| | - Fang Wang
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiaotong University , Dongchuan Rd 800 , 200240 Shanghai , China
| | - Lei Hou
- Department of Cardiology, Tongren Hospital , Shanghai Jiaotong University, School of Medicine , 200336 Shanghai , China
| | - Chuan-Liang Feng
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering , Shanghai Jiaotong University , Dongchuan Rd 800 , 200240 Shanghai , China
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34
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Li N, Xie T, Sun Y. Towards organogenesis and morphogenesis in vitro: harnessing engineered microenvironment and autonomous behaviors of pluripotent stem cells. Integr Biol (Camb) 2019; 10:574-586. [PMID: 30225509 DOI: 10.1039/c8ib00116b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recently, researchers have been attempting to control pluripotent stem cell fate or generate self-organized tissues from stem cells. Advances in bioengineering enable generation of organotypic structures, which capture the cellular components, spatial cell organization and even some functions of tissues or organs in development. However, only a few engineering tools have been utilized to regulate the formation and organization of spatially complex tissues derived from stem cells. Here, we provide a review of recent progress in the culture of organotypic structures in vitro, focusing on how microengineering approaches including geometric confinement, extracellular matrix (ECM) property modulation, spatially controlled biochemical factors, and external forces, can be utilized to generate organotypic structures. Moreover, we will discuss potential technologies that can be applied to further control both soluble and insoluble factors spatiotemporally in vitro. In summary, advanced engineered approaches have a great promise in generating miniaturized tissues and organs in a reproducible fashion, facilitating the cellular and molecular understanding of embryogenesis and morphogenesis processes.
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Affiliation(s)
- Ningwei Li
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA.
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35
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Zaltsman Y, Masuko S, Bensen JJ, Kiessling LL. Angiomotin Regulates YAP Localization during Neural Differentiation of Human Pluripotent Stem Cells. Stem Cell Reports 2019; 12:869-877. [PMID: 31006631 PMCID: PMC6523060 DOI: 10.1016/j.stemcr.2019.03.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 03/24/2019] [Accepted: 03/25/2019] [Indexed: 12/02/2022] Open
Abstract
Leveraging the extraordinary potential of human pluripotent stem cells (hPSCs) requires an understanding of the mechanisms underlying cell-fate decisions. Substrate elasticity can induce differentiation by signaling through the transcriptional coactivator Yes-associated protein (YAP). Cells cultured on surfaces mimicking brain elasticity exclude YAP from their nuclei and differentiate to neurons. How YAP localization is controlled during neural differentiation has been unclear. We employed CRISPR/Cas9 to tag endogenous YAP in hPSCs and used this fusion protein to identify YAP's interaction partners. This engineered cell line revealed that neural differentiation promotes a change in YAP interactors, including a dramatic increase in angiomotin (AMOT) interaction with YAP. AMOT regulates YAP localization during differentiation. AMOT expression increases during neural differentiation and leads to YAP nuclear exclusion. Our findings that AMOT-dependent regulation of YAP helps direct hPSC fate provide insight into the molecular mechanisms by which the microenvironment can induce neural differentiation. Endogenous tagging reveals YAP interactors in hPSCs AMOT-YAP complex concentration increases during neural differentiation AMOT regulates YAP localization in hPSCs hPSC cytoskeleton influences YAP localization via AMOT
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Affiliation(s)
- Yefim Zaltsman
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Sayaka Masuko
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Joshua J Bensen
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Laura L Kiessling
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA.
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36
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Musah S, Dimitrakakis N, Camacho DM, Church GM, Ingber DE. Directed differentiation of human induced pluripotent stem cells into mature kidney podocytes and establishment of a Glomerulus Chip. Nat Protoc 2019; 13:1662-1685. [PMID: 29995874 DOI: 10.1038/s41596-018-0007-8] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Protocols have been established to direct the differentiation of human induced pluripotent stem (iPS) cells into nephron progenitor cells and organoids containing many types of kidney cells, but it has been difficult to direct the differentiation of iPS cells to form specific types of mature human kidney cells with high yield. Here, we describe a detailed protocol for the directed differentiation of human iPS cells into mature, post-mitotic kidney glomerular podocytes with high (>90%) efficiency within 26 d and under chemically defined conditions, without genetic manipulations or subpopulation selection. We also describe how these iPS cell-derived podocytes may be induced to form within a microfluidic organ-on-a-chip (Organ Chip) culture device to build a human kidney Glomerulus Chip that mimics the structure and function of the kidney glomerular capillary wall in vitro within 35 d (starting with undifferentiated iPS cells). The podocyte differentiation protocol requires skills for culturing iPS cells, and the development of a Glomerulus Chip requires some experience with building and operating microfluidic cell culture systems. This method could be useful for applications in nephrotoxicity screening, therapeutic development, and regenerative medicine, as well as mechanistic study of kidney development and disease.
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Affiliation(s)
- Samira Musah
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA.,Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Nikolaos Dimitrakakis
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
| | - Diogo M Camacho
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA
| | - George M Church
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA.,Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Donald E Ingber
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, USA. .,Vascular Biology Program, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA. .,Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, USA.
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37
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Hansel C, Crowder SW, Cooper S, Gopal S, João Pardelha da Cruz M, de Oliveira Martins L, Keller D, Rothery S, Becce M, Cass AEG, Bakal C, Chiappini C, Stevens MM. Nanoneedle-Mediated Stimulation of Cell Mechanotransduction Machinery. ACS NANO 2019; 13:2913-2926. [PMID: 30829469 PMCID: PMC6439438 DOI: 10.1021/acsnano.8b06998] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 02/21/2019] [Indexed: 05/21/2023]
Abstract
Biomaterial substrates can be engineered to present topographical signals to cells which, through interactions between the material and active components of the cell membrane, regulate key cellular processes and guide cell fate decisions. However, targeting mechanoresponsive elements that reside within the intracellular domain is a concept that has only recently emerged. Here, we show that mesoporous silicon nanoneedle arrays interact simultaneously with the cell membrane, cytoskeleton, and nucleus of primary human cells, generating distinct responses at each of these cellular compartments. Specifically, nanoneedles inhibit focal adhesion maturation at the membrane, reduce tension in the cytoskeleton, and lead to remodeling of the nuclear envelope at sites of impingement. The combined changes in actin cytoskeleton assembly, expression and segregation of the nuclear lamina, and localization of Yes-associated protein (YAP) correlate differently from what is canonically observed upon stimulation at the cell membrane, revealing that biophysical cues directed to the intracellular space can generate heretofore unobserved mechanosensory responses. These findings highlight the ability of nanoneedles to study and direct the phenotype of large cell populations simultaneously, through biophysical interactions with multiple mechanoresponsive components.
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Affiliation(s)
- Catherine
S. Hansel
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Spencer W. Crowder
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Samuel Cooper
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
- Chester Beatty
Laboratories, Institute for Cancer Research, London SW3 6JB, U.K.
| | - Sahana Gopal
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Maria João Pardelha da Cruz
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
- Department
of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de
Lisboa, 1649-004 Lisbon, Portugal
| | - Leonardo de Oliveira Martins
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Debora Keller
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Stephen Rothery
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Michele Becce
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Anthony E. G. Cass
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Chris Bakal
- Chester Beatty
Laboratories, Institute for Cancer Research, London SW3 6JB, U.K.
| | - Ciro Chiappini
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
| | - Molly M. Stevens
- Department
of Materials, Department of Chemistry, Department of Bioengineering, Institute for Biomedical
Engineering, Department of Surgery and Cancer, Department of Medicine, and Facility for Imaging by Light Microscopy, Imperial College London, London SW7 2AZ, United Kingdom
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38
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Yan Y, Bejoy J, Marzano M, Li Y. The Use of Pluripotent Stem Cell-Derived Organoids to Study Extracellular Matrix Development during Neural Degeneration. Cells 2019; 8:E242. [PMID: 30875781 PMCID: PMC6468789 DOI: 10.3390/cells8030242] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/06/2019] [Accepted: 03/08/2019] [Indexed: 12/30/2022] Open
Abstract
The mechanism that causes the Alzheimer's disease (AD) pathologies, including amyloid plaque, neurofibrillary tangles, and neuron death, is not well understood due to the lack of robust study models for human brain. Three-dimensional organoid systems based on human pluripotent stem cells (hPSCs) have shown a promising potential to model neurodegenerative diseases, including AD. These systems, in combination with engineering tools, allow in vitro generation of brain-like tissues that recapitulate complex cell-cell and cell-extracellular matrix (ECM) interactions. Brain ECMs play important roles in neural differentiation, proliferation, neuronal network, and AD progression. In this contribution related to brain ECMs, recent advances in modeling AD pathology and progression based on hPSC-derived neural cells, tissues, and brain organoids were reviewed and summarized. In addition, the roles of ECMs in neural differentiation of hPSCs and the influences of heparan sulfate proteoglycans, chondroitin sulfate proteoglycans, and hyaluronic acid on the progression of neurodegeneration were discussed. The advantages that use stem cell-based organoids to study neural degeneration and to investigate the effects of ECM development on the disease progression were highlighted. The contents of this article are significant for understanding cell-matrix interactions in stem cell microenvironment for treating neural degeneration.
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Affiliation(s)
- Yuanwei Yan
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310, USA.
| | - Julie Bejoy
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310, USA.
| | - Mark Marzano
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310, USA.
| | - Yan Li
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310, USA.
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39
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Hydrogels with enhanced protein conjugation efficiency reveal stiffness-induced YAP localization in stem cells depends on biochemical cues. Biomaterials 2019; 202:26-34. [PMID: 30826537 DOI: 10.1016/j.biomaterials.2019.02.021] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/24/2019] [Accepted: 02/21/2019] [Indexed: 11/20/2022]
Abstract
Polyacrylamide hydrogels have been widely used in stem cell mechanotransduction studies. Conventional conjugation methods of biochemical cues to polyacrylamide hydrogels suffer from low conjugation efficiency, which leads to poor attachment of human pluripotent stem cells (hPSCs) on soft substrates. In addition, while it is well-established that stiffness-dependent regulation of stem cell fate requires cytoskeletal tension, and is mediated through nuclear translocation of transcription regulator, Yes-associated protein (YAP), the role of biochemical cues in stiffness-dependent YAP regulation remains largely unknown. Here we report a method that enhances the conjugation efficiency of biochemical cues on polyacrylamide hydrogels compared to conventional methods. This modified method enables robust hPSC attachment, proliferation and maintenance of pluripotency across varying substrate stiffness (3 kPa-38 kPa). Using this hydrogel platform, we demonstrate that varying the types of biochemical cues (Matrigel, laminin, GAG-peptide) or density of Matrigel can alter stiffness-dependent YAP localization in hPSCs. In particular, we show that stiffness-dependent YAP localization is overridden at low or high density of Matrigel. Furthermore, human mesenchymal stem cells display stiffness-dependent YAP localization only at intermediate fibronectin density. The hydrogel platform with enhanced conjugation efficiency of biochemical cues provides a powerful tool for uncovering the role of biochemical cues in regulating mechanotransduction of various stem cell types.
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40
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Chen LH, Sung TC, Lee HHC, Higuchi A, Su HC, Lin KJ, Huang YR, Ling QD, Kumar SS, Alarfaj AA, Munusamy MA, Nasu M, Chen DC, Hsu ST, Chang Y, Lee KF, Wang HC, Umezawa A. Xeno-free and feeder-free culture and differentiation of human embryonic stem cells on recombinant vitronectin-grafted hydrogels. Biomater Sci 2019; 7:4345-4362. [DOI: 10.1039/c9bm00418a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Xeno-free culture and cardiomyocyte differentiation of human embryonic stem cells on vitronectin-grafted hydrogels by adjusting surface charge and elasticity.
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41
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Farhat W, Hasan A, Lucia L, Becquart F, Ayoub A, Kobeissy F. Hydrogels for Advanced Stem Cell Therapies: A Biomimetic Materials Approach for Enhancing Natural Tissue Function. IEEE Rev Biomed Eng 2019; 12:333-351. [DOI: 10.1109/rbme.2018.2824335] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Catanesi M, Panella G, Benedetti E, Fioravanti G, Perrozzi F, Ottaviano L, Leandro LD, Ardini M, Giansanti F, d'Angelo M, Castelli V, Angelucci F, Ippoliti R, Cimini A. YAP/TAZ mechano-transduction as the underlying mechanism of neuronal differentiation induced by reduced graphene oxide. Nanomedicine (Lond) 2018; 13:3091-3106. [PMID: 30451074 DOI: 10.2217/nnm-2018-0269] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIM The aim of this work is the dissection of the molecular pathways underlying the differentiation effect of reduced graphene oxide (GO) materials in the absence of differentiation agents. MATERIALS & METHODS Reduced GO is obtained either by drop casting method and heat-treated or biological reduction by the interaction between GO and wtPrxI. Cells were grown on both materials and the differentiation process studied by immunological and morphological detection. RESULTS & CONCLUSION The results obtained indicate that both reduction methods of GO can determine the modulation of pathway involved in mechano-transduction and differentiation, by affecting YAP/TAZ localization outside the nuclei and increasing neuronal differentiation markers. This suggests that the mechano-transduction pathways are responsible for the differentiation process.
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Affiliation(s)
- M Catanesi
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - G Panella
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - E Benedetti
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - G Fioravanti
- Department of Physical & Chemical Sciences, University of L'Aquila, L'Aquila Italy
| | - F Perrozzi
- Department of Physical & Chemical Sciences, University of L'Aquila, L'Aquila Italy
| | - L Ottaviano
- Department of Physical & Chemical Sciences, University of L'Aquila, L'Aquila Italy
| | - L Di Leandro
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - M Ardini
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - F Giansanti
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - M d'Angelo
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - V Castelli
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - F Angelucci
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - R Ippoliti
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy
| | - A Cimini
- Department of Life, Health & Environmental Sciences, University of L'Aquila, L'Aquila Italy.,Department of Biology, Sbarro Institute for Cancer Research & Molecular Medicine, Temple University, PA, USA
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43
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Mechanistic Analysis of Physicochemical Cues in Promoting Human Pluripotent Stem Cell Self-Renewal and Metabolism. Int J Mol Sci 2018; 19:ijms19113459. [PMID: 30400347 PMCID: PMC6275035 DOI: 10.3390/ijms19113459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 10/27/2018] [Accepted: 11/01/2018] [Indexed: 12/20/2022] Open
Abstract
We have previously reported that a porous membrane of polyethylene terephthalate (PET) enables significant augmentation of human pluripotent stem cell (hPSC) proliferation and differentiation. The interaction between hPSCs and the PET surface induces β-catenin-mediated wingless/integrated (Wnt) signaling, leading to upregulation of the expression of adhesion molecules in hPSCs. In this study, we sought to unveil mechanisms underlying the role of the PET membrane in hPSC self-renewal and metabolism. We discovered that physicochemical cues of the PET membrane considerably alter hPSC metabolism by increasing the cell yield and suppressing the generation of toxic byproduct, indicating an effective cell self-renewal and a less apoptotic culture environment in the membrane culture system. Furthermore, we discovered that a caspase-8 medicated apoptotic pathway plays a profound role in obstructing hPSCs grown on a traditional tissue culture plate (TCP). Treating hPSCs seeded on a TCP surface with a caspase-8 inhibitor significantly suppressed cellular apoptotic pathway and improved cell proliferation and metabolism. Our experimental results provided valuable insights into signal pathways influencing hPSC self-renewal during routine maintenance and expansion, which would shed light on large-scale preparation of hPSCs for clinical applications.
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44
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Li X, Xie X, Ma Z, Li Q, Liu L, Hu X, Liu C, Li B, Wang H, Chen N, Fan C, Song H. Programming Niche Accessibility and In Vitro Stemness with Intercellular DNA Reactions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1804861. [PMID: 30276898 DOI: 10.1002/adma.201804861] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 09/04/2018] [Indexed: 06/08/2023]
Abstract
Stem cells generally exist in low abundance and tend to lose stemness in the absence of self-renewal signals. While extracellular-matrix-mimicking techniques have been developed to support stem cell proliferation, the lack of niche cells in these synthetic systems often hampers continuous stem cell expansion and maintenance of pluripotency, which are indispensable for regenerative medicine. Here, an intercellular DNA-reaction-programmed ESPN (expansion of stem cells with pairing niches) strategy is developed for 3D culture of mammary stem cells (MaSCs). Boolean logic operations are implemented to confer DNA-programmed mechanical signaling and genetically engineered morphogen signaling by niche cells, resulting in sustained expansion of MaSCs in vitro. The creation of stem cell niches improves the proliferation of pluripotent cells by four times during one-week culture. This method thus provides a novel approach for logical regulation of stemness and proliferation of stem cells for biomedicine.
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Affiliation(s)
- Xiaojiao Li
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Xiaodong Xie
- Division of Physical Biology and Bioimaging Center, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Zhiwei Ma
- Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Qian Li
- Division of Physical Biology and Bioimaging Center, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201800, China
- School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lin Liu
- Division of Physical Biology and Bioimaging Center, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Xingjie Hu
- School of Public Health, Guangzhou Medical University, Guangdong, 511436, China
| | - Chang Liu
- Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Bin Li
- Division of Physical Biology and Bioimaging Center, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Hui Wang
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Nan Chen
- Division of Physical Biology and Bioimaging Center, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Chunhai Fan
- Division of Physical Biology and Bioimaging Center, Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201800, China
- School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Haiyun Song
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
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45
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Wang B, Tu X, Wei J, Wang L, Chen Y. Substrate elasticity dependent colony formation and cardiac differentiation of human induced pluripotent stem cells. Biofabrication 2018; 11:015005. [DOI: 10.1088/1758-5090/aae0a5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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46
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Fu J, Chuah YJ, Liu J, Tan SY, Wang DA. Respective Effects of Gelatin-Coated Polydimethylsiloxane (PDMS) Substrates on Self-renewal and Cardiac Differentiation of Induced Pluripotent Stem Cells (iPSCs). ACS Biomater Sci Eng 2018; 4:4321-4330. [PMID: 33418827 DOI: 10.1021/acsbiomaterials.8b00993] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The effects of substrate stiffness on the development of cardiomyocytes have been investigated extensively. Polydimethylsiloxane (PDMS) elastomer is one of biomaterials that are commonly used to explore the effects of substrate compliance on stem cell differentiation. Although the effects of substrate stiffness on cardiac differentiation of pluripotent stem cells, such as embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), have been reported, whether the stiffness of PDMS-based substrates could enhance differentiation of iPSCs toward cardiomyocyte lineage or not remains unknown. In this study, we found that a denser gelatin distribution and a higher gelatin adsorption on the stiffer PDMS. In addition, nanotopographies on PDMS substrates with different stiffness were distinct. iPSCs on the stiffer PDMS substrates showed higher pluripotency marker but lower cardiac gene expressions. In contrast, iPSCs on the softer PDMS substrates revealed lower pluripotency marker but higher cardiac gene expressions. These results indicate that stiffer PDMS substrates with gelatin coating could be used to support iPSC self-renewal and softer PDMS substrates coated with gelatin could be used for enhanced cardiac differentiation of iPSCs.
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Affiliation(s)
- Jiayin Fu
- Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457
| | - Yon Jin Chuah
- Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457
| | - Jian Liu
- Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457
| | - Si Ying Tan
- Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457
| | - Dong-An Wang
- Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637457
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47
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Rijal G, Li W. Native-mimicking in vitro microenvironment: an elusive and seductive future for tumor modeling and tissue engineering. J Biol Eng 2018; 12:20. [PMID: 30220913 PMCID: PMC6136168 DOI: 10.1186/s13036-018-0114-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 08/30/2018] [Indexed: 12/15/2022] Open
Abstract
Human connective tissues are complex physiological microenvironments favorable for optimal survival, function, growth, proliferation, differentiation, migration, and death of tissue cells. Mimicking native tissue microenvironment using various three-dimensional (3D) tissue culture systems in vitro has been explored for decades, with great advances being achieved recently at material, design and application levels. These achievements are based on improved understandings about the functionalities of various tissue cells, the biocompatibility and biodegradability of scaffolding materials, the biologically functional factors within native tissues, and the pathophysiological conditions of native tissue microenvironments. Here we discuss these continuously evolving physical aspects of tissue microenvironment important for human disease modeling, with a focus on tumors, as well as for tissue repair and regeneration. The combined information about human tissue spaces reflects the necessities of considerations when configuring spatial microenvironments in vitro with native fidelity to culture cells and regenerate tissues that are beyond the formats of 2D and 3D cultures. It is important to associate tissue-specific cells with specific tissues and microenvironments therein for a better understanding of human biology and disease conditions and for the development of novel approaches to treat human diseases.
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Affiliation(s)
- Girdhari Rijal
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA 99210 USA
| | - Weimin Li
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA 99210 USA
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48
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Topal T, Hong X, Xue X, Fan Z, Kanetkar N, Nguyen JT, Fu J, Deng CX, Krebsbach PH. Acoustic Tweezing Cytometry Induces Rapid Initiation of Human Embryonic Stem Cell Differentiation. Sci Rep 2018; 8:12977. [PMID: 30154528 PMCID: PMC6113316 DOI: 10.1038/s41598-018-30939-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 08/08/2018] [Indexed: 02/05/2023] Open
Abstract
Mechanical forces play critical roles in influencing human embryonic stem cell (hESC) fate. However, it remains largely uncharacterized how local mechanical forces influence hESC behavior in vitro. Here, we used an ultrasound (US) technique, acoustic tweezing cytometry (ATC), to apply targeted cyclic subcellular forces to hESCs via integrin-bound microbubbles (MBs). We found that ATC-mediated cyclic forces applied for 30 min to hESCs near the edge of a colony induced immediate global responses throughout the colony, suggesting the importance of cell-cell connection in the mechanoresponsiveness of hESCs to ATC-applied forces. ATC application generated increased contractile force, enhanced calcium activity, as well as decreased expression of pluripotency transcription factors Oct4 and Nanog, leading to rapid initiation of hESC differentiation and characteristic epithelial-mesenchymal transition (EMT) events that depend on focal adhesion kinase (FAK) activation and cytoskeleton (CSK) tension. These results reveal a unique, rapid mechanoresponsiveness and community behavior of hESCs to integrin-targeted cyclic forces.
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Affiliation(s)
- Tuğba Topal
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.,Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Xiaowei Hong
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Xufeng Xue
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Zhenzhen Fan
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.,Department of Biomedical Engineering, Tianjin University, Tianjin, P.R. China
| | - Ninad Kanetkar
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Joe T Nguyen
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jianping Fu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.,Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.,Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Cheri X Deng
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA. .,Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Paul H Krebsbach
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA. .,Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA. .,Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA. .,Section of Periodontics, University of California, Los Angeles School of Dentistry, Los Angeles, CA, 90095, USA.
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49
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Grim J, Brown T, Aguado B, Chapnick D, Viert A, Liu X, Anseth KS. A Reversible and Repeatable Thiol-Ene Bioconjugation for Dynamic Patterning of Signaling Proteins in Hydrogels. ACS CENTRAL SCIENCE 2018; 4:909-916. [PMID: 30062120 PMCID: PMC6062832 DOI: 10.1021/acscentsci.8b00325] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Indexed: 05/10/2023]
Abstract
Biomolecule-functionalized hydrogels have emerged as valuable cell culture platforms to recapitulate the mechanical and biochemical properties of the extracellular niche. The typical strategy to functionalize hydrogels with biomolecules involves directly tethering them to the hydrogel backbone resulting in a static material. Thus, this approach fails to capture the dynamic changes in biomolecule composition that occur during biological processes or that may be required for regenerative medicine applications. Moreover, it also limits the scope of biomolecules to simple peptides, as signaling proteins generally have poor stability under cell culture conditions and lose their bioactivity over time. To that end, we sought to develop a bioconjugation reaction that would enable reversible and repeatable tethering of signaling proteins to hydrogels, so that spent protein could be released on-demand and replaced with fresh protein as needed. Specifically, we designed an allyl sulfide chain-transfer agent that enables a reversible, photomediated, thiol-ene bioconjugation of signaling proteins to hydrogels. Upon addition of a thiolated protein to the allyl sulfide moiety, the previously tethered protein is released, and the "ene" functionality is regenerated. Using this approach, we demonstrate that protein patterning can be achieved in hydrogels through a thiol-ene reaction, and the patterned protein can then be released through a subsequent thiol-ene reaction of a PEG thiol. Importantly, this process is repeatable through multiple iterations and proceeds at physiologically relevant signaling protein concentrations. Finally, we demonstrate that whole signaling proteins can be patterned and released in the presence of cells, and that cells respond to their presentation with spatial fidelity. Combined, these data represent the first example of a methodology that enables fully reversible and repeatable patterning and release of signaling proteins from hydrogels.
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Affiliation(s)
- Joseph
C. Grim
- Department
of Chemical and Biological Engineering, University of Colorado Boulder, 3415 Colorado Avenue, Boulder, Colorado 80209, United States
- BioFrontiers
Institute, 3415 Colorado
Avenue, Boulder, Colorado 80209, United States
| | - Tobin
E. Brown
- Department
of Chemical and Biological Engineering, University of Colorado Boulder, 3415 Colorado Avenue, Boulder, Colorado 80209, United States
- BioFrontiers
Institute, 3415 Colorado
Avenue, Boulder, Colorado 80209, United States
| | - Brian
A. Aguado
- Department
of Chemical and Biological Engineering, University of Colorado Boulder, 3415 Colorado Avenue, Boulder, Colorado 80209, United States
- BioFrontiers
Institute, 3415 Colorado
Avenue, Boulder, Colorado 80209, United States
| | - Douglas
A. Chapnick
- Department
of Chemistry and Biochemistry, University
of Colorado Boulder, 3415 Colorado Avenue, Boulder, Colorado 80209, United
States
| | - Alexandrea
L. Viert
- Department
of Chemical and Biological Engineering, University of Colorado Boulder, 3415 Colorado Avenue, Boulder, Colorado 80209, United States
| | - Xuedong Liu
- Department
of Chemistry and Biochemistry, University
of Colorado Boulder, 3415 Colorado Avenue, Boulder, Colorado 80209, United
States
| | - Kristi S. Anseth
- Department
of Chemical and Biological Engineering, University of Colorado Boulder, 3415 Colorado Avenue, Boulder, Colorado 80209, United States
- BioFrontiers
Institute, 3415 Colorado
Avenue, Boulder, Colorado 80209, United States
- E-mail:
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Chen X, Li J, Huang Y, Liu P, Fan Y. Insoluble Microenvironment Facilitating the Generation and Maintenance of Pluripotency. TISSUE ENGINEERING PART B-REVIEWS 2018; 24:267-278. [PMID: 29327674 DOI: 10.1089/ten.teb.2017.0415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Induced pluripotent stem cells (iPSCs) hold enormous potential as a tool to generate cells for tissue engineering and regenerative medicine. Since the initial report of iPSCs in 2006, many different methods have been developed to enhance the safety and efficiency of this technology. Recent studies indicate that the extracellular signals can promote the production of iPSCs, and even replace the Yamanaka factors. Noticeably, abundant evidences suggest that the insoluble microenvironment, including the culture substrate and neighboring cells, directly regulates the expression of core pluripotency genes and the epigenetic modification of the chromatins, hence, impacts the reprogramming dynamics. These studies provide new strategies for developing safer and more efficient method for iPSC generation. In this review, we examine the publications addressing the insoluble extracellular microenvironment that boosts iPSC generation and self-renewal. We also discuss cell adhesion-mediated molecular mechanisms, through which the insoluble extracellular cues interplay with reprogramming.
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Affiliation(s)
- Xiaofang Chen
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University , Beijing, China
- 2 Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University , Beijing, China
| | - Jiaqi Li
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University , Beijing, China
| | - Yan Huang
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University , Beijing, China
- 2 Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University , Beijing, China
| | - Peng Liu
- 3 Department of Biomedical Engineering, School of Medicine, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University , Beijing, China
| | - Yubo Fan
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University , Beijing, China
- 2 Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University , Beijing, China
- 4 National Research Center for Rehabilitation Technical Aids , Beijing, China
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