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Park R, Kang MS, Heo G, Shin YC, Han DW, Hong SW. Regulated Behavior in Living Cells with Highly Aligned Configurations on Nanowrinkled Graphene Oxide Substrates: Deep Learning Based on Interplay of Cellular Contact Guidance. ACS NANO 2024; 18:1325-1344. [PMID: 38099607 DOI: 10.1021/acsnano.2c09815] [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: 01/17/2024]
Abstract
Micro-/nanotopographical cues have emerged as a practical and promising strategy for controlling cell fate and reprogramming, which play a key role as biophysical regulators in diverse cellular processes and behaviors. Extracellular biophysical factors can trigger intracellular physiological signaling via mechanotransduction and promote cellular responses such as cell adhesion, migration, proliferation, gene/protein expression, and differentiation. Here, we engineered a highly ordered nanowrinkled graphene oxide (GO) surface via the mechanical deformation of an ultrathin GO film on an elastomeric substrate to observe specific cellular responses based on surface-mediated topographical cues. The ultrathin GO film on the uniaxially prestrained elastomeric substrate through self-assembly and subsequent compressive force produced GO nanowrinkles with periodic amplitude. To examine the acute cellular behaviors on the GO-based cell interface with nanostructured arrays of wrinkles, we cultured L929 fibroblasts and HT22 hippocampal neuronal cells. As a result, our developed cell-culture substrate obviously provided a directional guidance effect. In addition, based on the observed results, we adapted a deep learning (DL)-based data processing technique to precisely interpret the cell behaviors on the nanowrinkled GO surfaces. According to the learning/transfer learning protocol of the DL network, we detected cell boundaries, elongation, and orientation and quantitatively evaluated cell velocity, traveling distance, displacement, and orientation. The presented experimental results have intriguing implications such that the nanotopographical microenvironment could engineer the living cells' morphological polarization to assemble them into useful tissue chips consisting of multiple cell types.
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Affiliation(s)
- Rowoon Park
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Moon Sung Kang
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Gyeonghwa Heo
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Yong Cheol Shin
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Ohio 44195, United States
| | - Dong-Wook Han
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Suck Won Hong
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46241, Republic of Korea
- Engineering Research Center for Color-Modulated Extra-Sensory Perception Technology, Pusan National University, Busan 46241, Republic of Korea
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Zhang Y, Habibovic P. Delivering Mechanical Stimulation to Cells: State of the Art in Materials and Devices Design. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110267. [PMID: 35385176 DOI: 10.1002/adma.202110267] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Biochemical signals, such as growth factors, cytokines, and transcription factors are known to play a crucial role in regulating a variety of cellular activities as well as maintaining the normal function of different tissues and organs. If the biochemical signals are assumed to be one side of the coin, the other side comprises biophysical cues. There is growing evidence showing that biophysical signals, and in particular mechanical cues, also play an important role in different stages of human life ranging from morphogenesis during embryonic development to maturation and maintenance of tissue and organ function throughout life. In order to investigate how mechanical signals influence cell and tissue function, tremendous efforts have been devoted to fabricating various materials and devices for delivering mechanical stimuli to cells and tissues. Here, an overview of the current state of the art in the design and development of such materials and devices is provided, with a focus on their design principles, and challenges and perspectives for future research directions are highlighted.
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Affiliation(s)
- Yonggang Zhang
- Department of Instructive Biomaterials Engineering, Maastricht University, MERLN Institute for Technology-Inspired Regenerative Medicine, Universiteitssingel 40, Maastricht, 6229 ER, The Netherlands
| | - Pamela Habibovic
- Department of Instructive Biomaterials Engineering, Maastricht University, MERLN Institute for Technology-Inspired Regenerative Medicine, Universiteitssingel 40, Maastricht, 6229 ER, The Netherlands
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3
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Balakrishnan G, Song J, Mou C, Bettinger CJ. Recent Progress in Materials Chemistry to Advance Flexible Bioelectronics in Medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106787. [PMID: 34751987 PMCID: PMC8917047 DOI: 10.1002/adma.202106787] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/15/2021] [Indexed: 05/09/2023]
Abstract
Designing bioelectronic devices that seamlessly integrate with the human body is a technological pursuit of great importance. Bioelectronic medical devices that reliably and chronically interface with the body can advance neuroscience, health monitoring, diagnostics, and therapeutics. Recent major efforts focus on investigating strategies to fabricate flexible, stretchable, and soft electronic devices, and advances in materials chemistry have emerged as fundamental to the creation of the next generation of bioelectronics. This review summarizes contemporary advances and forthcoming technical challenges related to three principal components of bioelectronic devices: i) substrates and structural materials, ii) barrier and encapsulation materials, and iii) conductive materials. Through notable illustrations from the literature, integration and device fabrication strategies and associated challenges for each material class are highlighted.
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Affiliation(s)
| | - Jiwoo Song
- Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - Chenchen Mou
- Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
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Wu C, Chin CSM, Huang Q, Chan HY, Yu X, Roy VAL, Li WJ. Rapid nanomolding of nanotopography on flexible substrates to control muscle cell growth with enhanced maturation. MICROSYSTEMS & NANOENGINEERING 2021; 7:89. [PMID: 34754504 PMCID: PMC8571286 DOI: 10.1038/s41378-021-00316-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 08/20/2021] [Accepted: 09/13/2021] [Indexed: 05/11/2023]
Abstract
In vivo, multiple biophysical cues provided by highly ordered connective tissues of the extracellular matrix regulate skeletal muscle cells to align in parallel with one another. However, in routine in vitro cell culture environments, these key factors are often missing, which leads to changes in cell behavior. Here, we present a simple strategy for using optical media discs with nanogrooves and other polymer-based substrates nanomolded from the discs to directly culture muscle cells to study their response to the effect of biophysical cues such as nanotopography and substrate stiffness. We extend the range of study of biophysical cues for myoblasts by showing that they can sense ripple sizes as small as a 100 nm width and a 20 nm depth for myotube alignment, which has not been reported previously. The results revealed that nanotopography and substrate stiffness regulated myoblast proliferation and morphology independently, with nanotopographical cues showing a higher effect. These biophysical cues also worked synergistically, and their individual effects on cells were additive; i.e., by comparing cells grown on different polymer-based substrates (with and without nanogrooves), the cell proliferation rate could be reduced by as much as ~29%, and the elongation rate could be increased as much as ~116%. Moreover, during myogenesis, muscle cells actively responded to nanotopography and consistently showed increases in fusion and maturation indices of ~28% and ~21%, respectively. Finally, under electrical stimulation, the contraction amplitude of well-aligned myotubes was found to be almost 3 times greater than that for the cells on a smooth surface, regardless of the substrate stiffness.
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Affiliation(s)
- Cong Wu
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Chriss S. M. Chin
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Qingyun Huang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Ho-Yin Chan
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Xinge Yu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
| | | | - Wen J. Li
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
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5
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Fumasi FM, Stephanopoulos N, Holloway JL. Reversible control of biomaterial properties for dynamically tuning cell behavior. J Appl Polym Sci 2020; 137:49058. [PMID: 34054139 PMCID: PMC8159151 DOI: 10.1002/app.49058] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 11/25/2019] [Indexed: 12/13/2022]
Abstract
In the past decade, significant advances in chemistry and manufacturing have enabled the development of increasingly complex and controllable biomaterials. A key innovation is the design of dynamic biomaterials that allow for user-specified, reversible, temporal control over material properties. In this review, we provide an overview of recent advancements in reversible biomaterials, including control of stiffness, chemistry, ligand presentation, and topography. These systems have wide-ranging applications within biomedical engineering, including in vitro disease models and tissue-engineered scaffolds to guide multistep biological processes.
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Affiliation(s)
- Fallon M. Fumasi
- Chemical Engineering, School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, Arizona
| | - Nicholas Stephanopoulos
- Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, Arizona
- School of Molecular Sciences, Arizona State University, Tempe, Arizona
| | - Julianne L. Holloway
- Chemical Engineering, School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, Arizona
- Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, Arizona
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Liu W, Zhu L, Ma Y, Ai L, Wen W, Zhou C, Luo B. Well-ordered chitin whiskers layer with high stability on the surface of poly(d,l-lactide) film for enhancing mechanical and osteogenic properties. Carbohydr Polym 2019; 212:277-288. [DOI: 10.1016/j.carbpol.2019.02.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 02/14/2019] [Accepted: 02/18/2019] [Indexed: 10/27/2022]
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Chen H, Zhong J, Wang J, Huang R, Qiao X, Wang H, Tan Z. Enhanced growth and differentiation of myoblast cells grown on E-jet 3D printed platforms. Int J Nanomedicine 2019; 14:937-950. [PMID: 30787608 PMCID: PMC6366362 DOI: 10.2147/ijn.s193624] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Skeletal muscle tissue engineering often involves the prefabrication of muscle tissues in vitro by differentiation and maturation of muscle precursor cells on a platform which provides an environment that facilitates the myogenic differentiation of the seeded cells. METHODS Poly lactic-co-glycolic acid (PLGA) 3D printed scaffolds, which simulate the highly complex structure of extracellular matrix (ECM), were fabricated by E-jet 3D printing in this study. The scaffolds were used as platforms, providing environment that aids in growth, differentiation and other properties of C2C12 myoblast cells. RESULTS The C2C12 myoblast cells grown on the PLGA 3D printed platforms had enhanced cell adhesion and proliferation. Moreover, the platforms were able to induce myogenic differentiation of the myoblast cells by promoting the formation of myotubes and up-regulating the expressions of myogenic genes (MyHC and MyOG). CONCLUSION The fabricated 3D printed platforms have excellent biocompatibility, thereby can potentially be used as functional cell culture platforms in skeletal tissue engineering and regeneration.
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Affiliation(s)
- Haoxiang Chen
- College of Biology, Hunan University, Changsha, Hunan 410082, China,
| | - Juchang Zhong
- College of Biology, Hunan University, Changsha, Hunan 410082, China,
| | - Jian Wang
- College of Biology, Hunan University, Changsha, Hunan 410082, China,
| | - Ruiying Huang
- College of Biology, Hunan University, Changsha, Hunan 410082, China,
| | - Xiaoyin Qiao
- College of Biology, Hunan University, Changsha, Hunan 410082, China,
| | - Honghui Wang
- College of Biology, Hunan University, Changsha, Hunan 410082, China,
| | - Zhikai Tan
- College of Biology, Hunan University, Changsha, Hunan 410082, China,
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8
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Huang J, Chen Y, Tang C, Fei Y, Wu H, Ruan D, Paul ME, Chen X, Yin Z, Heng BC, Chen W, Shen W. The relationship between substrate topography and stem cell differentiation in the musculoskeletal system. Cell Mol Life Sci 2019; 76:505-521. [PMID: 30390116 PMCID: PMC11105278 DOI: 10.1007/s00018-018-2945-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/15/2018] [Accepted: 10/12/2018] [Indexed: 12/11/2022]
Abstract
It is well known that biomaterial topography can exert a profound influence on various cellular functions such as migration, polarization, and adhesion. With the development and refinement of manufacturing technology, much research has recently been focused on substrate topography-induced cell differentiation, particularly in the field of tissue engineering. Even without biological and chemical stimuli, the differentiation of stem cells can also be initiated by various biomaterials with different topographic features. However, the underlying mechanisms of this biological phenomenon remain elusive. During the past few decades, many researchers have demonstrated that cells can sense the topography of materials through the assembly and polymerization of membrane proteins. Following the activation of RHO, TGF-b or FAK signaling pathways, cells can be induced into various differentiation states. But these signaling pathways often coincide with canonical mechanical transduction pathways, and no firm conclusion has been reached among researchers in this field on topography-specific signaling pathways. On the other hand, some substrate topographies are reported to have the ability to inhibit differentiation and maintain the 'stemness' of stem cells. In this review, we will summarize the role of topography in musculoskeletal system regeneration and explore possible topography-related signaling pathways involved in cell differentiation.
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Affiliation(s)
- Jiayun Huang
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Yangwu Chen
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Chenqi Tang
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Yang Fei
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Haoyu Wu
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
| | - Dengfeng Ruan
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Maswikiti Ewetse Paul
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
| | - Xiao Chen
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China
| | - Zi Yin
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China
| | - Boon Chin Heng
- Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Weishan Chen
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China
| | - Weiliang Shen
- Department of Orthopedic Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, 310009, China.
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Zhejiang, 310000, China.
- Orthopaedics Research Institute of Zhejiang University, Zhejiang, China.
- Department of Sports Medicine, School of Medicine, Zhejiang University, Zhejiang, 310000, China.
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, China.
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Zhong J, Zhang Y, Chen J, Huang R, Yang Y, Chen H, Huang Y, Tan W, Tan Z. In Vitro Study of Colon Cancer Cell Migration Using E‐Jet 3D Printed Cell Culture Platforms. Macromol Biosci 2018; 18:e1800205. [DOI: 10.1002/mabi.201800205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/15/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Juchang Zhong
- College of BiologyHunan University Changsha Hunan 410082 China
- State Key Laboratory for Chemo/Biosensing and ChemometricsCollege of BiologyHunan University Changsha Hunan 410082 China
| | - Yingjie Zhang
- College of BiologyHunan University Changsha Hunan 410082 China
| | - Jingfei Chen
- Department of Obstetrics and GynecologyXiangya HospitalCentral South University Changsha Hunan 410082 China
| | - Ruiying Huang
- College of BiologyHunan University Changsha Hunan 410082 China
- State Key Laboratory for Chemo/Biosensing and ChemometricsCollege of BiologyHunan University Changsha Hunan 410082 China
| | - Yikun Yang
- College of BiologyHunan University Changsha Hunan 410082 China
| | - Haoxiang Chen
- College of BiologyHunan University Changsha Hunan 410082 China
| | - Yuan Huang
- College of BiologyHunan University Changsha Hunan 410082 China
| | - Weihong Tan
- College of BiologyHunan University Changsha Hunan 410082 China
- State Key Laboratory for Chemo/Biosensing and ChemometricsCollege of BiologyHunan University Changsha Hunan 410082 China
| | - Zhikai Tan
- College of BiologyHunan University Changsha Hunan 410082 China
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Höner M, Lauria I, Dabhi C, Kant S, Leube RE, Fischer H. Periodic microstructures on bioactive glass surfaces enhance osteogenic differentiation of human mesenchymal stromal cells and promote osteoclastogenesis in vitro. J Biomed Mater Res A 2018; 106:1965-1978. [PMID: 29569421 DOI: 10.1002/jbm.a.36399] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/19/2018] [Accepted: 03/15/2018] [Indexed: 11/06/2022]
Abstract
Bioactive glasses (BG) are known for their ability to bond to hard and soft tissues. We hypothesized that the stimulation of bone remodeling, including cellular bone forming and bone resorbing processes, can be increased by applying periodic microstructures on the glass surfaces in vitro. To test our hypothesis, two different BG (45S5 and 13-93) were microstructured in a groove-and-ridge pattern of different sizes by a novel casting process and tested in cell culture experiments using human mesenchymal stromal cells (hMSCs) and RAW 264.7 cells. The microstructures induced contact guidance of hMSCs and increased osteogenic marker gene expression of the stem cells, compared to non-structured glass surfaces as verified by ELISA and quantitative real-time PCR (qPCR) analyses. Furthermore, the structures stimulated the differentiation of RAW cells to osteoclast-like cells confirmed by TRAP gene expression and their resorption activity causing visible resorption lacunae. Our results demonstrate that periodically microstructured BG (especially 45S5) might improve the osteogenic differentiation of hMSCs and influence the activity of material resorbing cells in vitro. Hence, microstructuring of BG could enhance the remodeling process of bone substitutes critical for the formation of new bone tissue in vivo and thus be used to trigger bone remodeling kinetics in vivo. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1965-1978, 2018.
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Affiliation(s)
- Miriam Höner
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
| | - Ines Lauria
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
| | - Christina Dabhi
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
| | - Sebastian Kant
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, Aachen, 52074, Germany
| | - Rudolf E Leube
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, Aachen, 52074, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, Aachen, 52074, Germany
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11
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Kim M, Kim W, Kim G. Topologically Micropatterned Collagen and Poly(ε-caprolactone) Struts Fabricated Using the Poly(vinyl alcohol) Fibrillation/Leaching Process To Develop Efficiently Engineered Skeletal Muscle Tissue. ACS APPLIED MATERIALS & INTERFACES 2017; 9:43459-43469. [PMID: 29171953 DOI: 10.1021/acsami.7b14192] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Optimally designed three-dimensional (3D) biomedical scaffolds for skeletal muscle tissue regeneration pose significant research challenges. Currently, most studies on scaffolds focus on the two-dimensional (2D) surface structures that are patterned in the micro-/nanoscales with various repeating sizes and shapes to induce the alignment of myoblasts and myotube formation. The 2D patterned surface clearly provides effective analytical results of pattern size and shape of the myoblast alignment and differentiation. However, it is inconvenient in terms of the direct application for clinical usage due to the limited thickness and 3D shapeability. Hence, the present study suggests an innovative hydrogel or synthetic structure that consists of uniaxially surface-patterned cylindrical struts for skeleton muscle regeneration. The alignment of the pattern on the hydrogel (collagen) and poly(ε-caprolactone) struts was attained with the fibrillation of poly(vinyl alcohol) and the leaching process. Various cell culture results indicate that the C2C12 cells on the micropatterned collagen structure were fully aligned, and that a significantly high level of myotube formation was achieved when compared to the collagen structures that were not treated with the micropatterning process.
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Affiliation(s)
- Minseong Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU) , Suwon, South Korea
| | - WonJin Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU) , Suwon, South Korea
| | - GeunHyung Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU) , Suwon, South Korea
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12
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Vats K, Marsh G, Harding K, Zampetakis I, Waugh RE, Benoit DSW. Nanoscale physicochemical properties of chain- and step-growth polymerized PEG hydrogels affect cell-material interactions. J Biomed Mater Res A 2017; 105:1112-1122. [PMID: 28093865 DOI: 10.1002/jbm.a.36007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/06/2017] [Accepted: 01/11/2017] [Indexed: 12/15/2022]
Abstract
Poly(ethylene glycol) (PEG) hydrogels provide a versatile platform to develop cell instructive materials through incorporation of a variety of cell adhesive ligands and degradable chemistries. Synthesis of PEG gels can be accomplished via two mechanisms: chain and step growth polymerizations. The mechanism dramatically impacts hydrogel nanostructure, whereby chain polymerized hydrogels are highly heterogeneous and step growth networks exhibit more uniform structures. Underpinning these alterations in nanostructure of chain polymerized hydrogels are densely-packed hydrophobic poly(methyl methacrylate) or poly(acrylate) kinetic chains between hydrophilic PEG crosslinkers. As cell-material interactions, such as those mediated by integrins, occur at the nanoscale and affect cell behavior, it is important to understand how different modes of polymerization translate into nanoscale mechanical and hydrophobic heterogeneities of hydrogels. Therefore, chain- and step-growth polymerized PEG hydrogels with macroscopically similar macromers and compliance (for example, methacrylate-functionalized PEG (PEGDM), MW = 10 kDa and norbornene-functionalized 4-arm PEG (PEGnorb), MW = 10 kDa) were used to examine potential nanoscale differences in hydrogel mechanics and hydrophobicity using atomic force microscopy (AFM). It was found that chain-growth polymerized network yielded greater heterogeneities in both stiffness and hydrophobicity as compared to step-growth polymerized networks. These nanoscale heterogeneities impact cell-material interactions, particularly human mesenchymal stem cell (hMSC) adhesion and spreading, which has implications in use of these hydrogels for tissue engineering applications. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1112-1122, 2017.
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Affiliation(s)
- Kanika Vats
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
| | - Graham Marsh
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
| | - Kristen Harding
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
| | - Ioannis Zampetakis
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
| | - Richard E Waugh
- Department of Biomedical Engineering, University of Rochester, Rochester, New York.,Department of Biochemistry and Biophysics, University of Rochester, Rochester, New York.,Department of Pharmacology and Physiology, University of Rochester, Rochester, New York
| | - Danielle S W Benoit
- Department of Biomedical Engineering, University of Rochester, Rochester, New York.,Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York.,Department of Chemical Engineering, University of Rochester, Rochester, New York
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13
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Höner M, Böke F, Weber M, Fischer H. Mimicking physiological flow conditions to study alterations of bioactive glass surfaces in vitro. J Biomed Mater Res B Appl Biomater 2017; 106:228-236. [PMID: 28130877 DOI: 10.1002/jbm.b.33847] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/06/2016] [Accepted: 12/24/2016] [Indexed: 11/11/2022]
Abstract
Bioactive glasses form a strong bond with surrounding tissue and slowly degrade when implanted in vivo, stimulating the host bone to regenerate itself. We investigated the behaviour of microstructured bioactive glass surfaces (13-93) in an SBF reactor, which mimics physiological flow conditions. The structures were developed to potentially influence cell-biological long term processes such as osteogenic differentiation. It is therefore important that the structures withstand a certain time in SBF or body fluids. The experiments revealed that these structures were preserved up to 30 days. Although macroscopically stable, mass loss under flowing conditions was 2-2.5%, in contrast to <1% under static conditions. Polished samples in flowing medium lost 2.7% up to day 7 and then regained mass, resulting in overall 0.5% mass loss after 30 days. Thicker calcium phosphate rich layers for the samples in flowing medium were detected, demonstrating better bone bonding capacity than predicted conventionally. The hydroxyapatite conversion in the reactor was comparable to published in vivo data. We conclude that surface alterations that occur in vivo can be better mimicked by using the proposed flow bioreactor than by the established SBF method in static medium. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 228-236, 2018.
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Affiliation(s)
- Miriam Höner
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074, Aachen, Germany
| | - Frederik Böke
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074, Aachen, Germany
| | - Michael Weber
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074, Aachen, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, 52074, Aachen, Germany
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14
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Liu T, Huang R, Zhong J, Yang Y, Tan Z, Tan W. Control of cell proliferation in E-jet 3D-printed scaffolds for tissue engineering applications: the influence of the cell alignment angle. J Mater Chem B 2017; 5:3728-3738. [DOI: 10.1039/c7tb00377c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This study used E-jet 3D printing to fabricate various scaffolds for tissue engineering which could guide and improve cell growth.
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Affiliation(s)
- Tong Liu
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Biology
- Hunan University
- Changsha
- China
| | | | | | - Yikun Yang
- College of Biology
- Hunan University
- Changsha
- China
| | - Zhikai Tan
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Biology
- Hunan University
- Changsha
- China
| | - Weihong Tan
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Biology
- Hunan University
- Changsha
- China
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15
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Pham JT, Xue L, del Campo A, Salierno M. Guiding cell migration with microscale stiffness patterns and undulated surfaces. Acta Biomater 2016; 38:106-15. [PMID: 27109767 DOI: 10.1016/j.actbio.2016.04.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 04/14/2016] [Accepted: 04/18/2016] [Indexed: 01/13/2023]
Abstract
UNLABELLED By placing stiff structures under soft materials, prior studies have demonstrated that cells sense and prefer to position themselves over the stiff structures. However, an understanding of how cells migrate on such surfaces has not been established. Many studies have also shown that cells readily align to surface topography. Here we investigate the influence of these two aspects in directing cell migration on surfaces with 5 and 10μm line stiffness patterns (a cellular to subcellular length scale). A simple approach to create flat, stiffness-patterned surfaces by suspending a thin, low modulus polydimethylsiloxane (PDMS) film over a high modulus PDMS structure is presented, as well as a route to add undulations. We confirm that cells are able to sense through the thin film by observation of focal adhesions being positioned on stiff regions. We examine migration by introducing migration efficiency, a quantitative parameter to determine how strongly cells migrate in a certain direction. We found that cells have a preference to align and migrate along stiffness patterns while the addition of undulations boosts this effect, significantly increasing migration efficiency in either case. Interestingly, we found speed to play little role in the migration efficiency and to be mainly influenced by the top layer modulus. Our results demonstrate that both stiffness patterns and surface undulations are important considerations when investigating the interactions of cells with biomaterial surfaces. STATEMENT OF SIGNIFICANCE Two common physical considerations for cell-surface interactions include patterned stiffness and patterned topography. However, their relative influences on cell migration behavior have not been established, particularly on cellular to subcellular scale patterns. For stiffness patterning, it has been recently shown that cells tend to position themselves over a stiff structure that is placed under a thin soft layer. By quantifying the directional migration efficiency on such surfaces with and without undulations, we show that migration can be manipulated by flat stiffness patterns, although surface undulations also play a strong role. Our results offer insight on the effect of cellular scale stiffness and topographical patterns on cell migration, which is critical for the development of fundamental cell studies and engineered implants.
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16
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Wu J, Liow C, Tao K, Guo Y, Wang X, Miao J. Large-Area Sub-Wavelength Optical Patterning via Long-Range Ordered Polymer Lens Array. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16368-16378. [PMID: 27301636 DOI: 10.1021/acsami.6b01990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fabrication of large-area, highly orderly, and high-resolution nanostructures in a cost-effective fashion prompts advances in nanotechnology. Herein, for the first time, we demonstrate a unique strategy to prepare a long-range highly regular polymer lens from photoresist nanotrenches based templates, which are obtained from underexposure. The relationship between exposure dose and the cross-sectional morphology of produced photoresist nanostructures is revealed for the first time. The polymer lens arrays are repeatedly used for rapid generation of sub-100 nm nanopatterns across centimeter-scale areas. The light focusing properties of the nanoscale polymer lens are investigated by both simulation and experiment. It is found that the geometry, size of the lens, and the exposure dose can be deployed to adjust the produced feature size, spacing, and shapes. Because the polymer lenses are derived from top-down photolithography, the nearly perfect long-range periodicity of produced nanopatterns is ensured, and the feature shapes can be flexibly designed. Because this nanolithographic strategy enables subwavelength periodical nanopatterns with controllable feature size, geometry, and composition in a cost-effective manner, it can be optimized as a viable and potent nanofabrication tool for various technological applications.
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Affiliation(s)
- Jin Wu
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore
| | - Chihao Liow
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore
| | - Kai Tao
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore
| | - Yuanyuan Guo
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore
| | - Xiaotian Wang
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore
| | - Jianmin Miao
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798, Singapore
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17
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Bennett NK, Dhaliwal A, Moghe PV. Convergence of Highly Resolved and Rapid Screening Platforms with Dynamically Engineered, Cell Phenotype-Prescriptive Biomaterials. ACTA ACUST UNITED AC 2016; 2:142-151. [PMID: 27482508 DOI: 10.1007/s40495-016-0057-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Biophysical and biochemical cues from the cellular microenvironment initiate intracellular signaling through cellular membrane receptors and trigger specific cell developmental programs. Extracellular substrates and matrix scaffolds engineered to mimic cell's native physiological environment must incorporate the multifactorial parameters (composition, micro and nanoscale organization and topography) of the extracellular matrix as well as the dynamic nature of the matrix. The design of such engineered biomaterials is challenged by the inherent complexity and dynamic nature of the cell-extracellular matrix reciprocity, while the validation of robust microenvironments requires a deeper, higher content phenotypic resolution of cell-matrix interactions alongside a rapid screening capability. To this end, high-throughput platforms are integral to facilitating the screening and optimization of complex engineered microenvironments for directing desired cell developmental pathway. This review highlights the recent advances in biomaterial platforms that present dynamic cues and enable high throughput screening of cell's response to a combination of micro-environmental factors. We also address some newer techniques involving high content image informatics to elucidate emergent cellular behaviors with a focus on stem cell regenerative endpoints.
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Affiliation(s)
- Neal K Bennett
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ
| | - Anandika Dhaliwal
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ
| | - Prabhas V Moghe
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ; Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ
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