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Baek J, Kumar S, Schaffer DV. Dynamic light-responsive RhoA activity regulates mechanosensitive stem cell fate decision in 3D matrices. BIOMATERIALS ADVANCES 2024; 160:213836. [PMID: 38599042 DOI: 10.1016/j.bioadv.2024.213836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/05/2024] [Accepted: 03/19/2024] [Indexed: 04/12/2024]
Abstract
The behavior of stem cells is regulated by mechanical cues in their niche that continuously vary due to extracellular matrix (ECM) remodeling, pulsated mechanical stress exerted by blood flow, and/or cell migration. However, it is still unclear how dynamics of mechanical cues influence stem cell lineage commitment, especially in a 3D microenvironment where mechanosensing differs from that in a 2D microenvironment. In the present study, we investigated how temporally varying mechanical signaling regulates expression of the early growth response 1 gene (Egr1), which we recently discovered to be a 3D matrix-specific mediator of mechanosensitive neural stem cell (NSC) lineage commitment. Specifically, we temporally controlled the activity of Ras homolog family member A (RhoA), which is known to have a central role in mechanotransduction, using our previously developed Arabidopsis thaliana cryptochrome-2-based optoactivation system. Interestingly, pulsed RhoA activation induced Egr1 upregulation in stiff 3D gels only, whereas static light stimulation induced an increase in Egr1 expression across a wide range of 3D gel stiffnesses. Actin assembly inhibition limited Egr1 upregulation upon RhoA activation, implying that RhoA signaling requires an actin-involved process to upregulate Egr1. Consistently, static-light RhoA activation rather than pulsed-light activation restricted neurogenesis in soft gels. Our findings indicate that the dynamics of RhoA activation influence Egr1-mediated stem cell fate within 3D matrices in a matrix stiffness-dependent manner.
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Affiliation(s)
- Jieung Baek
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Bioengineering, University of California, Berkeley, CA 94720, USA; Division of Mechanical and Biomedical Engineering, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Sanjay Kumar
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Bioengineering, University of California, Berkeley, CA 94720, USA.
| | - David V Schaffer
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Bioengineering, University of California, Berkeley, CA 94720, USA; Helen Wills Neuroscience Institute, Berkeley, CA 94720, USA.
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2
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Sharifi M, Kamalabadi-Farahani M, Salehi M, Ebrahimi-Barough S, Alizadeh M. Recent advances in enhances peripheral nerve orientation: the synergy of micro or nano patterns with therapeutic tactics. J Nanobiotechnology 2024; 22:194. [PMID: 38643117 PMCID: PMC11031871 DOI: 10.1186/s12951-024-02475-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 04/11/2024] [Indexed: 04/22/2024] Open
Abstract
Several studies suggest that topographical patterns influence nerve cell fate. Efforts have been made to improve nerve cell functionality through this approach, focusing on therapeutic strategies that enhance nerve cell function and support structures. However, inadequate nerve cell orientation can impede long-term efficiency, affecting nerve tissue repair. Therefore, enhancing neurites/axons directional growth and cell orientation is crucial for better therapeutic outcomes, reducing nerve coiling, and ensuring accurate nerve fiber connections. Conflicting results exist regarding the effects of micro- or nano-patterns on nerve cell migration, directional growth, immunogenic response, and angiogenesis, complicating their clinical use. Nevertheless, advances in lithography, electrospinning, casting, and molding techniques to intentionally control the fate and neuronal cells orientation are being explored to rapidly and sustainably improve nerve tissue efficiency. It appears that this can be accomplished by combining micro- and nano-patterns with nanomaterials, biological gradients, and electrical stimulation. Despite promising outcomes, the unclear mechanism of action, the presence of growth cones in various directions, and the restriction of outcomes to morphological and functional nerve cell markers have presented challenges in utilizing this method. This review seeks to clarify how micro- or nano-patterns affect nerve cell morphology and function, highlighting the potential benefits of cell orientation, especially in combined approaches.
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Affiliation(s)
- Majid Sharifi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran.
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran.
| | | | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Somayeh Ebrahimi-Barough
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Morteza Alizadeh
- Department of Tissue Engineering and Biomaterials, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan, Iran
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3
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Cho Y, Choi Y, Seong H. Nanoscale surface coatings and topographies for neural interfaces. Acta Biomater 2024; 175:55-75. [PMID: 38141934 DOI: 10.1016/j.actbio.2023.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/28/2023] [Accepted: 12/14/2023] [Indexed: 12/25/2023]
Abstract
With the lack of minimally invasive tools for probing neuronal systems across spatiotemporal scales, understanding the working mechanism of the nervous system and limited assessments available are imperative to prevent or treat neurological disorders. In particular, nanoengineered neural interfaces can provide a solution to this technological barrier. This review covers recent surface engineering approaches, including nanoscale surface coatings, and a range of topographies from the microscale to the nanoscale, primarily focusing on neural-interfaced biosystems. Specifically, the immobilization of bioactive molecules to fertilize the neural cell lineage, topographical engineering to induce mechanotransduction in neural cells, and enhanced cell-chip coupling using three-dimensional structured surfaces are highlighted. Advances in neural interface design will help us understand the nervous system, thereby achieving the effective treatments for neurological disorders. STATEMENT OF SIGNIFICANCE: • This review focuses on designing bioactive neural interface with a nanoscale chemical modification and topographical engineering at multiscale perspective. • Versatile nanoscale surface coatings and topographies for neural interface are summarized. • Recent advances in bioactive materials applicable for neural cell culture, electrophysiological sensing, and neural implants are reviewed.
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Affiliation(s)
- Younghak Cho
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Yunyoung Choi
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea; Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Hyejeong Seong
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea; Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology (UST), Seoul, Republic of Korea.
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4
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Couvrette LJ, Walker KLA, Bui TV, Pelling AE. Plant Cellulose as a Substrate for 3D Neural Stem Cell Culture. Bioengineering (Basel) 2023; 10:1309. [PMID: 38002433 PMCID: PMC10669287 DOI: 10.3390/bioengineering10111309] [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: 08/23/2023] [Revised: 10/06/2023] [Accepted: 11/01/2023] [Indexed: 11/26/2023] Open
Abstract
Neural stem cell (NSC)-based therapies are at the forefront of regenerative medicine strategies for various neural defects and injuries such as stroke, traumatic brain injury, and spinal cord injury. For several clinical applications, NSC therapies require biocompatible scaffolds to support cell survival and to direct differentiation. Here, we investigate decellularized plant tissue as a novel scaffold for three-dimensional (3D), in vitro culture of NSCs. Plant cellulose scaffolds were shown to support the attachment and proliferation of adult rat hippocampal neural stem cells (NSCs). Further, NSCs differentiated on the cellulose scaffold had significant increases in their expression of neuron-specific beta-III tubulin and glial fibrillary acidic protein compared to 2D culture on a polystyrene plate, indicating that the scaffold may enhance the differentiation of NSCs towards astrocytic and neuronal lineages. Our findings suggest that plant-derived cellulose scaffolds have the potential to be used in neural tissue engineering and can be harnessed to direct the differentiation of NSCs.
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Affiliation(s)
- Lauren J. Couvrette
- Department of Biology, University of Ottawa, Gendron Hall, 30 Marie Curie, Ottawa, ON K1N 5N5, Canada
| | - Krystal L. A. Walker
- Department of Physics, University of Ottawa, STEM Complex, 150 Louis Pasteur Pvt., Ottawa, ON K1N 5N5, Canada
| | - Tuan V. Bui
- Department of Biology, University of Ottawa, Gendron Hall, 30 Marie Curie, Ottawa, ON K1N 5N5, Canada
| | - Andrew E. Pelling
- Department of Biology, University of Ottawa, Gendron Hall, 30 Marie Curie, Ottawa, ON K1N 5N5, Canada
- Department of Physics, University of Ottawa, STEM Complex, 150 Louis Pasteur Pvt., Ottawa, ON K1N 5N5, Canada
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5
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Zong B, Yu F, Zhang X, Pang Y, Zhao W, Sun P, Li L. Mechanosensitive Piezo1 channel in physiology and pathophysiology of the central nervous system. Ageing Res Rev 2023; 90:102026. [PMID: 37532007 DOI: 10.1016/j.arr.2023.102026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/29/2023] [Accepted: 07/29/2023] [Indexed: 08/04/2023]
Abstract
Since the discovery of the mechanosensitive Piezo1 channel in 2010, there has been a significant amount of research conducted to explore its regulatory role in the physiology and pathology of various organ systems. Recently, a growing body of compelling evidence has emerged linking the activity of the mechanosensitive Piezo1 channel to health and disease of the central nervous system. However, the exact mechanisms underlying these associations remain inadequately comprehended. This review systematically summarizes the current research on the mechanosensitive Piezo1 channel and its implications for central nervous system mechanobiology, retrospects the results demonstrating the regulatory role of the mechanosensitive Piezo1 channel on various cell types within the central nervous system, including neural stem cells, neurons, oligodendrocytes, microglia, astrocytes, and brain endothelial cells. Furthermore, the review discusses the current understanding of the involvement of the Piezo1 channel in central nervous system disorders, such as Alzheimer's disease, multiple sclerosis, glaucoma, stroke, and glioma.
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Affiliation(s)
- Boyi Zong
- College of Physical Education and Health, East China Normal University, Shanghai 200241, China; Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China
| | - Fengzhi Yu
- School of Exercise and Health, Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, Shanghai University of Sport, Shanghai 200438, China
| | - Xiaoyou Zhang
- College of Physical Education and Health, East China Normal University, Shanghai 200241, China; Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China
| | - Yige Pang
- Department of Neurosurgery, Zibo Central Hospital, Zibo 255000, Shandong, China
| | - Wenrui Zhao
- College of Physical Education and Health Sciences, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Peng Sun
- College of Physical Education and Health, East China Normal University, Shanghai 200241, China; Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China
| | - Lin Li
- College of Physical Education and Health, East China Normal University, Shanghai 200241, China; Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, East China Normal University, Shanghai 200241, China.
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6
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Ahn H, Cho Y, Yun GT, Jung KB, Jeong W, Kim Y, Son MY, Lee E, Im SG, Jung HT. Hierarchical Topography with Tunable Micro- and Nanoarchitectonics for Highly Enhanced Cardiomyocyte Maturation via Multi-Scale Mechanotransduction. Adv Healthc Mater 2023; 12:e2202371. [PMID: 36652539 DOI: 10.1002/adhm.202202371] [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: 09/15/2022] [Revised: 01/12/2023] [Indexed: 01/19/2023]
Abstract
Enhancing cardiomyocyte (CM) maturation by topographical cues is a critical issue in cardiac tissue engineering. Thus far, single-scale topographies with a broad range of feature shapes and dimensions have been utilized including grooves, pillars, and fibers. This study reports for the first time a hierarchical structure composed of nano-pillars (nPs) on micro-wrinkles (µWs) for effective maturation of CMs. Through capillary force lithography followed by a wrinkling process, vast size ranges of topographies are fabricated, and the responses of CMs are systematically investigated. Maturation of CMs on the hierarchical structures is highly enhanced compared to a single-scale topography: cardiac differentiation of H9C2s (rat cardiomyocytes) on the hierarchical topography is ≈ 2.8 and ≈ 1.9 times higher than those consisting of single-scale µWs and nPs. Both nPs and µWs have important roles in cardiac maturation, and the aspect ratio (height/diameter) of the nPs and the wavelength of the µWs are important in CM maturation. This enhancement is caused by strong focal adhesion and nucleus mediated mechanotransduction of CMs from the confinement effects of the different wavelengths of µWs and the cellular membrane protrusion on the nPs. This study demonstrates how a large family of hierarchical structures is used for cardiac maturation.
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Affiliation(s)
- Hyunah Ahn
- National Laboratory for Organic Opto-Electronic Material, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Younghak Cho
- Functional Thin Film Laboratory, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea.,KI for NanoCentury, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Geun-Tae Yun
- National Nanofab Center, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
| | - Kwang Bo Jung
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Korea
| | - Wonji Jeong
- Functional Thin Film Laboratory, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea.,KI for NanoCentury, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Yesol Kim
- Functional Thin Film Laboratory, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea.,KI for NanoCentury, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Mi-Young Son
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Korea
| | - Eunjung Lee
- Functional Thin Film Laboratory, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea.,KI for NanoCentury, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Sung Gap Im
- Functional Thin Film Laboratory, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea.,KI for NanoCentury, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Hee-Tae Jung
- National Laboratory for Organic Opto-Electronic Material, Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
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7
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Chighizola M, Dini T, Marcotti S, D'Urso M, Piazzoni C, Borghi F, Previdi A, Ceriani L, Folliero C, Stramer B, Lenardi C, Milani P, Podestà A, Schulte C. The glycocalyx affects the mechanotransductive perception of the topographical microenvironment. J Nanobiotechnology 2022; 20:418. [PMID: 36123687 PMCID: PMC9484177 DOI: 10.1186/s12951-022-01585-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/29/2022] [Indexed: 11/10/2022] Open
Abstract
The cell/microenvironment interface is the starting point of integrin-mediated mechanotransduction, but many details of mechanotransductive signal integration remain elusive due to the complexity of the involved (extra)cellular structures, such as the glycocalyx. We used nano-bio-interfaces reproducing the complex nanotopographical features of the extracellular matrix to analyse the glycocalyx impact on PC12 cell mechanosensing at the nanoscale (e.g., by force spectroscopy with functionalised probes). Our data demonstrates that the glycocalyx configuration affects spatio-temporal nanotopography-sensitive mechanotransductive events at the cell/microenvironment interface. Opposing effects of major glycocalyx removal were observed, when comparing flat and specific nanotopographical conditions. The excessive retrograde actin flow speed and force loading are strongly reduced on certain nanotopographies upon strong reduction of the native glycocalyx, while on the flat substrate we observe the opposite trend. Our results highlight the importance of the glycocalyx configuration in a molecular clutch force loading-dependent cellular mechanism for mechanosensing of microenvironmental nanotopographical features.
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Affiliation(s)
- Matteo Chighizola
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Tania Dini
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.,The FIRC Institute of Molecular Oncology (IFOM), Milan, Italy
| | - Stefania Marcotti
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, UK
| | - Mirko D'Urso
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.,Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Claudio Piazzoni
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Francesca Borghi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Anita Previdi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Laura Ceriani
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Claudia Folliero
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.,The FIRC Institute of Molecular Oncology (IFOM), Milan, Italy
| | - Brian Stramer
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, UK
| | - Cristina Lenardi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Paolo Milani
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Alessandro Podestà
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.
| | - Carsten Schulte
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.
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8
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Baek J, Lopez PA, Lee S, Kim TS, Kumar S, Schaffer DV. Egr1 is a 3D matrix-specific mediator of mechanosensitive stem cell lineage commitment. SCIENCE ADVANCES 2022; 8:eabm4646. [PMID: 35427160 PMCID: PMC9012469 DOI: 10.1126/sciadv.abm4646] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 02/28/2022] [Indexed: 05/31/2023]
Abstract
While extracellular matrix (ECM) mechanics strongly regulate stem cell commitment, the field's mechanistic understanding of this phenomenon largely derives from simplified two-dimensional (2D) culture substrates. Here, we found a 3D matrix-specific mechanoresponsive mechanism for neural stem cell (NSC) differentiation. NSC lineage commitment in 3D is maximally stiffness sensitive in the range of 0.1 to 1.2 kPa, a narrower and more brain-mimetic range than we had previously identified in 2D (0.75 to 75 kPa). Transcriptomics revealed stiffness-dependent up-regulation of early growth response 1 (Egr1) in 3D but not in 2D. Egr1 knockdown enhanced neurogenesis in stiff ECMs by driving β-catenin nuclear localization and activity in 3D, but not in 2D. Mechanical modeling and experimental studies under osmotic pressure indicate that stiff 3D ECMs are likely to stimulate Egr1 via increases in confining stress during cell volumetric growth. To our knowledge, Egr1 represents the first 3D-specific stem cell mechanoregulatory factor.
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Affiliation(s)
- Jieung Baek
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Paola A. Lopez
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
| | - Sangmin Lee
- Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Taek-Soo Kim
- Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Sanjay Kumar
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - David V. Schaffer
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- UC Berkeley–UC San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, Berkeley, CA 94720, USA
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9
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Extrapolating neurogenesis of mesenchymal stem/stromal cells on electroactive and electroconductive scaffolds to dental and oral-derived stem cells. Int J Oral Sci 2022; 14:13. [PMID: 35210393 PMCID: PMC8873504 DOI: 10.1038/s41368-022-00164-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 12/29/2021] [Accepted: 01/17/2022] [Indexed: 01/06/2023] Open
Abstract
The high neurogenic potential of dental and oral-derived stem cells due to their embryonic neural crest origin, coupled with their ready accessibility and easy isolation from clinical waste, make these ideal cell sources for neuroregeneration therapy. Nevertheless, these cells also have high propensity to differentiate into the osteo-odontogenic lineage. One strategy to enhance neurogenesis of these cells may be to recapitulate the natural physiological electrical microenvironment of neural tissues via electroactive or electroconductive tissue engineering scaffolds. Nevertheless, to date, there had been hardly any such studies on these cells. Most relevant scientific information comes from neurogenesis of other mesenchymal stem/stromal cell lineages (particularly bone marrow and adipose tissue) cultured on electroactive and electroconductive scaffolds, which will therefore be the focus of this review. Although there are larger number of similar studies on neural cell lines (i.e. PC12), neural stem/progenitor cells, and pluripotent stem cells, the scientific data from such studies are much less relevant and less translatable to dental and oral-derived stem cells, which are of the mesenchymal lineage. Much extrapolation work is needed to validate that electroactive and electroconductive scaffolds can indeed promote neurogenesis of dental and oral-derived stem cells, which would thus facilitate clinical applications in neuroregeneration therapy.
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10
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Baek J, Kumar S, Schaffer DV, Im SG. N-Cadherin adhesive ligation regulates mechanosensitive neural stem cell lineage commitment in 3D matrices. Biomater Sci 2022; 10:6768-6777. [PMID: 36314115 DOI: 10.1039/d2bm01349e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate a novel strategy to independently control cell–ECM and cell–cell interactions of neural stem cells in a 3D matrix.
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Affiliation(s)
- Jieung Baek
- Dept. of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Dept. of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Sanjay Kumar
- Dept. of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Dept. of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Dept. of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - David V. Schaffer
- Dept. of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Dept. of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Dept. of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Sung Gap Im
- Dept. of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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11
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Zhang Z, Liu M, Zheng Y. Role of Rho GTPases in stem cell regulation. Biochem Soc Trans 2021; 49:2941-2955. [PMID: 34854916 PMCID: PMC9008577 DOI: 10.1042/bst20211071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 02/05/2023]
Abstract
The future of regenerative medicine relies on our understanding of stem cells which are essential for tissue/organ generation and regeneration to maintain and/or restore tissue homeostasis. Rho family GTPases are known regulators of a wide variety of cellular processes related to cytoskeletal dynamics, polarity and gene transcription. In the last decade, major new advances have been made in understanding the regulatory role and mechanism of Rho GTPases in self-renewal, differentiation, migration, and lineage specification in tissue-specific signaling mechanisms in various stem cell types to regulate embryonic development, adult tissue homeostasis, and tissue regeneration upon stress or damage. Importantly, implication of Rho GTPases and their upstream regulators or downstream effectors in the transformation, migration, invasion and tumorigenesis of diverse cancer stem cells highlights the potential of Rho GTPase targeting in cancer therapy. In this review, we discuss recent evidence of Rho GTPase signaling in the regulation of embryonic stem cells, multiple somatic stem cells, and cancer stem cells. We propose promising areas where Rho GTPase pathways may serve as useful targets for stem cell manipulation and related future therapies.
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Affiliation(s)
- Zheng Zhang
- Division of Experimental Hematology and Cancer Biology, Children’s Hospital Medical Center, University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, U.S.A
| | - Ming Liu
- Department of Abdominal Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Children’s Hospital Medical Center, University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, U.S.A
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12
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Abraham JA, Blaschke S, Tarazi S, Dreissen G, Vay SU, Schroeter M, Fink GR, Merkel R, Rueger MA, Hoffmann B. NSCs Under Strain-Unraveling the Mechanoprotective Role of Differentiating Astrocytes in a Cyclically Stretched Coculture With Differentiating Neurons. Front Cell Neurosci 2021; 15:706585. [PMID: 34630042 PMCID: PMC8497758 DOI: 10.3389/fncel.2021.706585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/31/2021] [Indexed: 11/19/2022] Open
Abstract
The neural stem cell (NSC) niche is a highly vascularized microenvironment that supplies stem cells with relevant biological and chemical cues. However, the NSCs’ proximity to the vasculature also means that the NSCs are subjected to permanent tissue deformation effected by the vessels’ heartbeat-induced pulsatile movements. Cultivating NSCs under common culture conditions neglects the—yet unknown—influence of this cyclic mechanical strain on neural stem cells. Under the hypothesis that pulsatile strain should affect essential NSC functions, a cyclic uniaxial strain was applied under biomimetic conditions using an in-house developed stretching system based on cross-linked polydimethylsiloxane (PDMS) elastomer. While lineage commitment remained unaffected by cyclic deformation, strain affected NSC quiescence and cytoskeletal organization. Unexpectedly, cyclically stretched stem cells aligned in stretch direction, a phenomenon unknown for other types of cells in the mammalian organism. The same effect was observed for young astrocytes differentiating from NSCs. In contrast, young neurons differentiating from NSCs did not show mechanoresponsiveness. The exceptional orientation of NSCs and young astrocytes in the stretch direction was blocked upon RhoA activation and went along with a lack of stress fibers. Compared to postnatal astrocytes and mature neurons, NSCs and their young progeny displayed characteristic and distinct mechanoresponsiveness. Data suggest a protective role of young astrocytes in mixed cultures of differentiating neurons and astrocytes by mitigating the mechanical stress of pulsatile strain on developing neurons.
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Affiliation(s)
- Jella-Andrea Abraham
- Mechanobiology, Institute of Biological Information Processing (IBI-2), Research Centre Juelich, Juelich, Germany
| | - Stefan Blaschke
- Department of Neurology, Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany.,Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Juelich, Juelich, Germany
| | - Samar Tarazi
- Mechanobiology, Institute of Biological Information Processing (IBI-2), Research Centre Juelich, Juelich, Germany
| | - Georg Dreissen
- Mechanobiology, Institute of Biological Information Processing (IBI-2), Research Centre Juelich, Juelich, Germany
| | - Sabine U Vay
- Department of Neurology, Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany
| | - Michael Schroeter
- Department of Neurology, Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany.,Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Juelich, Juelich, Germany
| | - Gereon R Fink
- Department of Neurology, Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany.,Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Juelich, Juelich, Germany
| | - Rudolf Merkel
- Mechanobiology, Institute of Biological Information Processing (IBI-2), Research Centre Juelich, Juelich, Germany
| | - Maria A Rueger
- Department of Neurology, Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany.,Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Juelich, Juelich, Germany
| | - Bernd Hoffmann
- Mechanobiology, Institute of Biological Information Processing (IBI-2), Research Centre Juelich, Juelich, Germany
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13
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Abend A, Steele C, Jahnke HG, Zink M. Adhesion of Neurons and Glial Cells with Nanocolumnar TiN Films for Brain-Machine Interfaces. Int J Mol Sci 2021; 22:8588. [PMID: 34445294 PMCID: PMC8395253 DOI: 10.3390/ijms22168588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/29/2021] [Accepted: 08/07/2021] [Indexed: 12/12/2022] Open
Abstract
Coupling of cells to biomaterials is a prerequisite for most biomedical applications; e.g., neuroelectrodes can only stimulate brain tissue in vivo if the electric signal is transferred to neurons attached to the electrodes' surface. Besides, cell survival in vitro also depends on the interaction of cells with the underlying substrate materials; in vitro assays such as multielectrode arrays determine cellular behavior by electrical coupling to the adherent cells. In our study, we investigated the interaction of neurons and glial cells with different electrode materials such as TiN and nanocolumnar TiN surfaces in contrast to gold and ITO substrates. Employing single-cell force spectroscopy, we quantified short-term interaction forces between neuron-like cells (SH-SY5Y cells) and glial cells (U-87 MG cells) for the different materials and contact times. Additionally, results were compared to the spreading dynamics of cells for different culture times as a function of the underlying substrate. The adhesion behavior of glial cells was almost independent of the biomaterial and the maximum growth areas were already seen after one day; however, adhesion dynamics of neurons relied on culture material and time. Neurons spread much better on TiN and nanocolumnar TiN and also formed more neurites after three days in culture. Our designed nanocolumnar TiN offers the possibility for building miniaturized microelectrode arrays for impedance spectroscopy without losing detection sensitivity due to a lowered self-impedance of the electrode. Hence, our results show that this biomaterial promotes adhesion and spreading of neurons and glial cells, which are important for many biomedical applications in vitro and in vivo.
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Affiliation(s)
- Alice Abend
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Peter Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
| | - Chelsie Steele
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Peter Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
| | - Heinz-Georg Jahnke
- Centre for Biotechnology and Biomedicine, Molecular Biological-Biochemical Processing Technology, Leipzig University, Deutscher Platz 5, 04103 Leipzig, Germany;
| | - Mareike Zink
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Peter Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
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14
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Cho Y, Lee M, Park S, Kim Y, Lee E, Im SG. A Versatile Surface Modification Method via Vapor-phase Deposited Functional Polymer Films for Biomedical Device Applications. BIOTECHNOL BIOPROC E 2021; 26:165-178. [PMID: 33821132 PMCID: PMC8013202 DOI: 10.1007/s12257-020-0269-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/05/2020] [Accepted: 10/08/2020] [Indexed: 01/01/2023]
Abstract
For last two decades, the demand for precisely engineered three-dimensional structures has increased continuously for the developments of biomaterials. With the recent advances in micro- and nano-fabrication techniques, various devices with complex surface geometries have been devised and produced in the pharmaceutical and medical fields for various biomedical applications including drug delivery and biosensors. These advanced biomaterials have been designed to mimic the natural environments of tissues more closely and to enhance the performance for their corresponding biomedical applications. One of the important aspects in the rational design of biomaterials is how to configure the surface of the biomedical devices for better control of the chemical and physical properties of the bioactive surfaces without compromising their bulk characteristics. In this viewpoint, it of critical importance to secure a versatile method to modify the surface of various biomedical devices. Recently, a vapor phase method, termed initiated chemical vapor deposition (iCVD) has emerged as damage-free method highly beneficial for the conformal deposition of various functional polymer films onto many kinds of micro- and nano-structured surfaces without restrictions on the substrate material or geometry, which is not trivial to achieve by conventional solution-based surface functionalization methods. With proper structural design, the functional polymer thin film via iCVD can impart required functionality to the biomaterial surfaces while maintaining the fine structure thereon. We believe the iCVD technique can be not only a valuable approach towards fundamental cell-material studies, but also of great importance as a platform technology to extend to other prospective biomaterial designs and material interface modifications for biomedical applications.
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Affiliation(s)
- Younghak Cho
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Minseok Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Seonghyeon Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Yesol Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Eunjung Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
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15
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Heng BC, Zhang X, Aubel D, Bai Y, Li X, Wei Y, Fussenegger M, Deng X. Role of YAP/TAZ in Cell Lineage Fate Determination and Related Signaling Pathways. Front Cell Dev Biol 2020; 8:735. [PMID: 32850847 PMCID: PMC7406690 DOI: 10.3389/fcell.2020.00735] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/15/2020] [Indexed: 12/11/2022] Open
Abstract
The penultimate effectors of the Hippo signaling pathways YAP and TAZ, are transcriptional co-activator proteins that play key roles in many diverse biological processes, ranging from cell proliferation, tumorigenesis, mechanosensing and cell lineage fate determination, to wound healing and regeneration. In this review, we discuss the regulatory mechanisms by which YAP/TAZ control stem/progenitor cell differentiation into the various major lineages that are of interest to tissue engineering and regenerative medicine applications. Of particular interest is the key role of YAP/TAZ in maintaining the delicate balance between quiescence, self-renewal, proliferation and differentiation of endogenous adult stem cells within various tissues/organs during early development, normal homeostasis and regeneration/healing. Finally, we will consider how increasing knowledge of YAP/TAZ signaling might influence the trajectory of future progress in regenerative medicine.
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Affiliation(s)
- Boon C. Heng
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
- Faculty of Science and Technology, Sunway University, Subang Jaya, Malaysia
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, China
| | - Dominique Aubel
- IUTA Department Genie Biologique, Universite Claude Bernard Lyon 1, Villeurbanne, France
| | - Yunyang Bai
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xiaochan Li
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yan Wei
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Martin Fussenegger
- Department of Biosystems Science and Engineering, ETH-Zürich, Basel, Switzerland
| | - Xuliang Deng
- National Engineering Laboratory for Digital and Material Technology of Stomatology, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, China
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
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16
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Yang L, Jurczak KM, Ge L, Rijn P. High-Throughput Screening and Hierarchical Topography-Mediated Neural Differentiation of Mesenchymal Stem Cells. Adv Healthc Mater 2020; 9:e2000117. [PMID: 32363812 DOI: 10.1002/adhm.202000117] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/27/2020] [Indexed: 12/12/2022]
Abstract
Biophysical factors such as anisotropic topography composed of micro/nanosized structures are important for directing the fate of human bone marrow-derived mesenchymal stem cells (hBM-MSCs) and have been applied to neuronal differentiation. Via high-throughput screening (HTS) methods based on topography gradients, the optimum topography is determined and translated toward a hierarchical architecture designed to mimic the nerve nano/microstructure. The polydimethylsiloxane (PDMS)-based topography gradient with amplitudes (A) from 541 to 3073 nm and wavelengths (W) between 4 and 30 µm is developed and the fate commitment of MSC toward neuron lineage is investigated. The hierarchical structures, combining nano- and microtopography (W0.3/W26 parallel/perpendicular) are fabricated to explore the combined topography effects on neuron differentiation. From the immunofluorescent staining results (Tuj1 and MAP2), the substrate characterized by W: 26 µm; A: 2.9 µm shows highest potential for promoting neurogenesis. Furthermore, the hierarchical features (W0.3/W26 parallel) significantly enhance neural differentiation. The hBM-MSCs on the hierarchical substrates exhibit a significantly lower percentage of nuclear Yes-associated protein (YAP)/TAZ and weaker cell contractility indicating that the promoted neurogenesis is mediated by the cell tension and YAP/TAZ pathway. This research provides new insight into designing biomaterials for applications in neural tissue engineering and contributes to the understanding of topography-mediated neuronal differentiation.
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Affiliation(s)
- Liangliang Yang
- Department of Biomedical Engineering University Medical Center GroningenUniversity of Groningen Groningen, A. Deusinglaan 1 Groningen 9713 AV The Netherlands
| | - Klaudia Malgorzata Jurczak
- Department of Biomedical Engineering University Medical Center GroningenUniversity of Groningen Groningen, A. Deusinglaan 1 Groningen 9713 AV The Netherlands
| | - Lu Ge
- Department of Biomedical Engineering University Medical Center GroningenUniversity of Groningen Groningen, A. Deusinglaan 1 Groningen 9713 AV The Netherlands
| | - Patrick Rijn
- Department of Biomedical Engineering University Medical Center GroningenUniversity of Groningen Groningen, A. Deusinglaan 1 Groningen 9713 AV The Netherlands
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17
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Effect of substrate topography on the regulation of human corneal stromal cells. Colloids Surf B Biointerfaces 2020; 190:110971. [PMID: 32197207 DOI: 10.1016/j.colsurfb.2020.110971] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 02/17/2020] [Accepted: 03/11/2020] [Indexed: 12/28/2022]
Abstract
Optimal functionality of native corneal stroma depends on a well-ordered arrangement of extracellular matrix (ECM). To develop an in vitro corneal model, replication of the corneal in vivo microenvironment is needed. In this study, the impact of topographic cues on keratocyte phenotype is reported. Photolithography and polymer moulding were used to fabricate microgrooves on polydimethylsiloxane (PDMS) 2-2.5 μm deep and 5 μm, 10 μm, or 20 μm in width. Microgrooves constrained the cells body, compressed nuclei and led to cytoskeletal reorganization. It also influenced the concentration of actin filaments, condensation of chromatin and cell proliferation. Cells became more spread and actin filament concentration decreased as the microgroove width increased. Relationships were also demonstrated between microgroove width and cellular processes such as adhesion, migration and gene expression. Immunocytochemistry and gene expression (RT-PCR) analysis showed that microgroove width upregulated keratocyte specific genes. A microgroove with 5 μm width led to a pronounced alignment of cells along the edges of the microchannels and better supported cell polarization and migration compared with other microgroove widths or planar substrates. These findings provide important fundamental knowledge that could serve as a basis for better-controlled tissue growth and cell-engineering applications for corneal stroma regeneration through topographical patterns.
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18
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Bio-orthogonal click reaction-enabled highly specific in situ cellularization of tissue engineering scaffolds. Biomaterials 2019; 230:119615. [PMID: 31776020 DOI: 10.1016/j.biomaterials.2019.119615] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 10/31/2019] [Accepted: 11/08/2019] [Indexed: 11/21/2022]
Abstract
Tissue engineering generally utilizes natural or synthetic scaffolds to repair or replace damaged tissues. However, due to the lack of guidance of biological signals, most of the implanted scaffolds have always suffered from poor in vivo cellularization. Herein, we demonstrate a bio-orthogonal reaction-based strategy to realize in situ specific and fast cellularization of tissue engineering scaffold. DBCO-modified PCL-PEG (PCL-PEG-DBCO) polymer was synthesized and then fabricated into PCL-PEG-DBCO film through electrospinning. Meanwhile, azide-labeled macrophages (N3 (+) macrophages) were obtained through metabolic glycoengineering. Through a series of in vitro dynamic and in vivo characterization, DBCO-modified films were noted to dramatically increase the selective capture efficiency and survival rate of N3 (+) cells. Additionally, there is negligible influence of covalent conjugation on cell viability and proliferation, indicating the feasibility of the bio-orthogonal click reaction-based tissue engineering strategy. Overall, this work shows the advantages of an in situ bio-orthogonal click reaction in realizing highly specific, efficient, and long-lasting scaffold cellularization. We anticipate that this general strategy would be widely applicable and useful in tissue engineering and regenerative medicine in the near future.
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19
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Chighizola M, Dini T, Lenardi C, Milani P, Podestà A, Schulte C. Mechanotransduction in neuronal cell development and functioning. Biophys Rev 2019; 11:701-720. [PMID: 31617079 PMCID: PMC6815321 DOI: 10.1007/s12551-019-00587-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 08/29/2019] [Indexed: 12/21/2022] Open
Abstract
Although many details remain still elusive, it became increasingly evident in recent years that mechanosensing of microenvironmental biophysical cues and subsequent mechanotransduction are strongly involved in the regulation of neuronal cell development and functioning. This review gives an overview about the current understanding of brain and neuronal cell mechanobiology and how it impacts on neurogenesis, neuronal migration, differentiation, and maturation. We will focus particularly on the events in the cell/microenvironment interface and the decisive extracellular matrix (ECM) parameters (i.e. rigidity and nanometric spatial organisation of adhesion sites) that modulate integrin adhesion complex-based mechanosensing and mechanotransductive signalling. It will also be outlined how biomaterial approaches mimicking essential ECM features help to understand these processes and how they can be used to control and guide neuronal cell behaviour by providing appropriate biophysical cues. In addition, principal biophysical methods will be highlighted that have been crucial for the study of neuronal mechanobiology.
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Affiliation(s)
- Matteo Chighizola
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Tania Dini
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Cristina Lenardi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Paolo Milani
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Alessandro Podestà
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Carsten Schulte
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy.
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20
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Baek J, Jung WB, Cho Y, Lee E, Yun GT, Cho SY, Jung HT, Im SG. Facile Fabrication of High-Definition Hierarchical Wrinkle Structures for Investigating the Geometry-Sensitive Fate Commitment of Human Neural Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17247-17255. [PMID: 31009192 DOI: 10.1021/acsami.9b03479] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
As neural stem cells (NSCs) interact with biophysical cues from their niche during development, it is important to understand the biomolecular mechanism of how the NSCs process these biophysical cues to regulate their behaviors. In particular, anisotropic geometric cues in micro-/nanoscale have been utilized to investigate the biophysical effect of the structure on NSCs behaviors. Here, a series of new nanoscale anisotropic wrinkle structures with the a range of wavelength scales (from 50 nm to 37 μm) was developed to demonstrate the effect of the anisotropic nanostructure on the fate commitment of NSCs. Intriguingly, two distinct characteristic length scales promoted the neurogenesis. Each wavelength scale showed a striking variation in terms of dependency on the directionality of the structures, suggesting the existence of at least two different ways in the processing of anisotropic geometries for neurogenesis. Furthermore, the combined effect of the two distinctive length scales was observed by employing hierarchical multiscale wrinkle structures with two characteristic neurogenesis-promoting wavelengths. Taken together, the wrinkle structure system developed in this study can serve as an effective platform to advance the understanding of how cells sense anisotropic geometries for their specific cellular behaviors. Furthermore, this could provide clues for improving nerve regeneration system of stem cell therapies.
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Affiliation(s)
- Jieung Baek
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
| | - Woo-Bin Jung
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
- KAIST Institute for Nanocentury , 291 Daehak-ro , Daejeon 34141 , Korea
| | - Younghak Cho
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
| | - Eunjung Lee
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
| | - Geun-Tae Yun
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
- KAIST Institute for Nanocentury , 291 Daehak-ro , Daejeon 34141 , Korea
| | - Soo-Yeon Cho
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
- KAIST Institute for Nanocentury , 291 Daehak-ro , Daejeon 34141 , Korea
| | - Hee-Tae Jung
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
- KAIST Institute for Nanocentury , 291 Daehak-ro , Daejeon 34141 , Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Daejeon 34141 , Korea
- KAIST Institute for Nanocentury , 291 Daehak-ro , Daejeon 34141 , Korea
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21
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Omidinia-Anarkoli A, Rimal R, Chandorkar Y, Gehlen DB, Rose JC, Rahimi K, Haraszti T, De Laporte L. Solvent-Induced Nanotopographies of Single Microfibers Regulate Cell Mechanotransduction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7671-7685. [PMID: 30694648 DOI: 10.1021/acsami.8b17955] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The extracellular matrix (ECM) is a dynamic three-dimensional (3D) fibrous network, surrounding all cells in vivo. Fiber manufacturing techniques are employed to mimic the ECM but still lack the knowledge and methodology to produce single fibers approximating cell size with different surface topographies to study cell-material interactions. Using solvent-assisted spinning (SAS), the potential to continuously produce single microscale fibers with unlimited length, precise diameter, and specific surface topographies was demonstrated. By applying solvents with different solubilities and volatilities, fibers with smooth, grooved, and porous surface morphologies are produced. Due to their hierarchical structures, the porous fibers are the most hydrophobic, followed by the grooved and the smooth fibers. The fiber diameter is increased by increasing the polymer concentration or decreasing the collector rotational speed. Moreover, SAS offers the advantage to control the interfiber distance and angle to fabricate multilayered 3D constructs. This report shows for the first time that the micro- and nanoscale topographies of single fibers mechanically regulate cell behavior. Fibroblasts, grown on fibers with grooved topographical features, stretch and elongate more compared to smooth and porous fibers, whereas both porous and grooved fibers induce nuclear translocation of yes-associated protein. The presented technique, therefore, provides a unique platform to study the interaction between cells and single ECM-like fibers in a precise and reproducible manner, which is of great importance for new material developments in the field of tissue engineering.
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Affiliation(s)
| | - Rahul Rimal
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Yashoda Chandorkar
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - David B Gehlen
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Jonas C Rose
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Khosrow Rahimi
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Tamás Haraszti
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
| | - Laura De Laporte
- DWI-Leibniz Institute for Interactive Materials , Aachen 52074 , Germany
- ITMC-Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Aachen 52074 , Germany
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22
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Schulte C, Lamanna J, Moro AS, Piazzoni C, Borghi F, Chighizola M, Ortoleva S, Racchetti G, Lenardi C, Podestà A, Malgaroli A, Milani P. Neuronal Cells Confinement by Micropatterned Cluster-Assembled Dots with Mechanotransductive Nanotopography. ACS Biomater Sci Eng 2018; 4:4062-4075. [DOI: 10.1021/acsbiomaterials.8b00916] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Carsten Schulte
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
| | - Jacopo Lamanna
- Center for Behavioral Neuroscience and Communication (BNC), Università Vita-Salute San Raffaele and Neurobiology of Learning Unit, Division of Neuroscience, Scientific
Institute San Raffaele, Milano, Italy
| | - Andrea Stefano Moro
- Center for Behavioral Neuroscience and Communication (BNC), Università Vita-Salute San Raffaele and Neurobiology of Learning Unit, Division of Neuroscience, Scientific
Institute San Raffaele, Milano, Italy
| | - Claudio Piazzoni
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
| | - Francesca Borghi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
| | - Matteo Chighizola
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
| | - Serena Ortoleva
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
| | - Gabriella Racchetti
- Center for Behavioral Neuroscience and Communication (BNC), Università Vita-Salute San Raffaele and Neurobiology of Learning Unit, Division of Neuroscience, Scientific
Institute San Raffaele, Milano, Italy
| | - Cristina Lenardi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
| | - Alessandro Podestà
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
| | - Antonio Malgaroli
- Center for Behavioral Neuroscience and Communication (BNC), Università Vita-Salute San Raffaele and Neurobiology of Learning Unit, Division of Neuroscience, Scientific
Institute San Raffaele, Milano, Italy
| | - Paolo Milani
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (CIMaINa) and Department of Physics, Università degli Studi di Milano, Milano, Italy
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