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Li L, Wang P, Liang H, Jin J, Zhang Y, Shi J, Zhang Y, He S, Mao H, Xue B, Lai J, Zhu L, Jiang Q. Design of a Haversian system-like gradient porous scaffold based on triply periodic minimal surfaces for promoting bone regeneration. J Adv Res 2023; 54:89-104. [PMID: 36632888 DOI: 10.1016/j.jare.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 09/14/2022] [Accepted: 01/06/2023] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION The bone ingrowth depth in the porous scaffolds is greatly affected by the structural design, notably the pore size, pore geometry, and the pore distribution. To enhance the bone regeneration capability of scaffolds, the bionic design can be regarded as a potential solution. OBJECTIVES We proposed a Haversian system-like gradient structure based on the triply periodic minimal surface architectures with pore size varying from the edge to the center. And its effects in promoting bone regeneration were evaluated in the study. METHODS The gradient scaffold was designed using the triply periodic minimal surface architectures. The mechanical properties were analyzed by the finite element simulation and confirmed using the universal machine. The fluid characteristics were calculated by the computational fluid dynamics analysis. The bone regeneration process was simulated using a in silico computational model containing the main biological, physical, and chemical variation during the bone growth process. Finally, the in vitro and in vivo studies were carried out to verify the actual osteogenic effect. RESULTS Compared to the uniform scaffold, the biomimetic gradient scaffold demonstrated better performance in stress conduction and reduced stress shielding effects. The fluid features were appropriate for cell migration and flow diffusion, and the permeability was in the same order of magnitude with the natural bone. The bone ingrowth simulation exhibited improved angiogenesis and bone regeneration. Higher expression of the osteogenesis-related genes, higher alkaline phosphatase activity, and increased mineralization could be observed on the gradient scaffold in the in vitro study. The 12-week in vivo study proved that the gradient scaffold had deeper bone inserting depth and a more stable bone-scaffold interface. CONCLUSION The Haversian system-like gradient structure can effectively promote the bone regeneration. This structural design can be used as a new solution for the clinical application of prosthesis design.
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Affiliation(s)
- Lan Li
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Branch of National Clinical Research Center for Orthopedics, Drum Tower Hospital Affiliated to Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing 210000, China; Jiangsu Engineering Research Center for 3D Bioprinting, No. 321 Zhongshan Road, Nanjing 210000, China
| | - Peng Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Branch of National Clinical Research Center for Orthopedics, Drum Tower Hospital Affiliated to Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing 210000, China; Jiangsu Engineering Research Center for 3D Bioprinting, No. 321 Zhongshan Road, Nanjing 210000, China
| | - Huixin Liang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Branch of National Clinical Research Center for Orthopedics, Drum Tower Hospital Affiliated to Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing 210000, China; Jiangsu Engineering Research Center for 3D Bioprinting, No. 321 Zhongshan Road, Nanjing 210000, China
| | - Jing Jin
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Branch of National Clinical Research Center for Orthopedics, Drum Tower Hospital Affiliated to Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing 210000, China
| | - Yibo Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Branch of National Clinical Research Center for Orthopedics, Drum Tower Hospital Affiliated to Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing 210000, China
| | - Jianping Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Branch of National Clinical Research Center for Orthopedics, Drum Tower Hospital Affiliated to Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing 210000, China
| | - Yun Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
| | - Siyuan He
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
| | - Hongli Mao
- College of Materials Science and Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, China
| | - Bin Xue
- National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, No. 2 Hankou Road, Nanjing 210093, China
| | - Jiancheng Lai
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305-6104, USA
| | - Liya Zhu
- School of Electrical and Automation Engineering, Nanjing Normal University, No.2 Xuelin Road, Nanjing 210023, China.
| | - Qing Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Branch of National Clinical Research Center for Orthopedics, Drum Tower Hospital Affiliated to Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing 210000, China; Jiangsu Engineering Research Center for 3D Bioprinting, No. 321 Zhongshan Road, Nanjing 210000, China.
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Zhou D, Wu B, Yang W, Li X, Zhu L, Xu Z, Wan L. Effect of polar groups of polystyrenes on the
self‐assembly
of breath figure arrays. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Di Zhou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Bai‐Heng Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Wen‐Wu Yang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Xiao Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Liang‐Wei Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Zhi‐Kang Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Ling‐Shu Wan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
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He J, Renard E, Lord P, Cohen D, Gu B, Wang X, Yenduri G, Burgess DJ. Strategies for extended lifetime of implantable intraperitoneal insulin catheters. J Control Release 2021; 341:487-497. [PMID: 34856228 DOI: 10.1016/j.jconrel.2021.11.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 11/08/2021] [Accepted: 11/25/2021] [Indexed: 01/01/2023]
Abstract
Implantable insulin infusion systems using the intra-peritoneal route have dramatically changed the management of diabetes paving the way toward the realization of the potential "holy grail" of a fully implantable artificial pancreas. However, the wear duration of delivery catheters is compromised by the foreign body-mediated immune response. Both occlusion material present at the distal catheter tip end and fibrotic encapsulation surrounding the catheters influence the controlled and precise delivery of insulin, which eventually leads to the need for surgical intervention. The novel part of the current work is the investigation of the roles of implant physical properties (catheter size and tip configuration), as well as local inflammation control (through utilization of an anti-inflammatory agent) on the host fibrotic response using a previously developed animal model. The cellular and molecular response, the medication delivery efficacy as well as the ability to flush the catheters were examined and further compared among the different mitigation strategies. Reduction in catheter size as well as tuning the tip configuration from a cone shape to a round shape showed delayed host recognition and delayed propagation of the fibrotic response. However, the round shaped tips had an increased occurrence of lumen occlusion as a result of flow change. It became apparent that changing the physical properties of the catheters was not a long-term solution to catheter obstructions caused by the foreign body reaction. In comparison, control of the local inflammatory response through the use of an anti-inflammatory agent demonstrated a promising strategy for maintenance of catheter functionality without any type of obstructions. These finding will have a large impact toward the development of long-term use catheters for continuous intraperitoneal insulin infusion.
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Affiliation(s)
- Jia He
- Department of Pharmaceutical Sciences, University of Connecticut, 69 N Eagleville Road U3092, Storrs, CT 06269, USA
| | - Eric Renard
- Department of Endocrinology, Diabetes and Nutrition, Montpellier University Hospital, Lapeyronie Hospital, Avenue Doyen Giraud, Montpellier 34295, France; Institute of Functional Genomics, CNRS, INSERM, University of Montpellier, 141 Rue de la Cardonille, Montpellier 34094, France
| | - Peter Lord
- PhysioLogic Devices, Inc, 2232 Old Stagecoach Trail, Alpine, CA 91901, USA
| | - Don Cohen
- PhysioLogic Devices, Inc, 2232 Old Stagecoach Trail, Alpine, CA 91901, USA
| | - Bing Gu
- Department of Pharmaceutical Sciences, University of Connecticut, 69 N Eagleville Road U3092, Storrs, CT 06269, USA
| | - Xiaoyi Wang
- Department of Pharmaceutical Sciences, University of Connecticut, 69 N Eagleville Road U3092, Storrs, CT 06269, USA
| | - Gowtham Yenduri
- Department of Pharmaceutical Sciences, University of Connecticut, 69 N Eagleville Road U3092, Storrs, CT 06269, USA
| | - Diane J Burgess
- Department of Pharmaceutical Sciences, University of Connecticut, 69 N Eagleville Road U3092, Storrs, CT 06269, USA.
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YUAN MS, XU W, HE QG, CHENG JG, FU YY. Research progress of breath figure method in device application. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1016/j.cjac.2021.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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The Influence of the Surface Topographical Cues of Biomaterials on Nerve Cells in Peripheral Nerve Regeneration: A Review. Stem Cells Int 2021; 2021:8124444. [PMID: 34349803 PMCID: PMC8328695 DOI: 10.1155/2021/8124444] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/05/2021] [Indexed: 01/01/2023] Open
Abstract
The surface topographies of artificial implants including surface roughness, surface groove size and orientation, and surface pore size and distribution have a great influence on the adhesion, migration, proliferation, and differentiation of nerve cells in the nerve regeneration process. Optimizing the surface topographies of biomaterials can be a key strategy for achieving excellent cell performance in various applications such as nerve tissue engineering. In this review, we offer a comprehensive summary of the surface topographies of nerve implants and their effects on nerve cell behavior. This review also emphasizes the latest work progress of the layered structure of the natural extracellular matrix that can be imitated by the material surface topology. Finally, the future development of surface topographies on nerve regeneration was prospectively remarked.
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6
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Cao X, Liu X, Liu Y, Ma R, Sun S. The effect of curvature on chondrocytes migration and bone mesenchymal stem cells differentiation. J Appl Polym Sci 2021. [DOI: 10.1002/app.50392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xing Cao
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
| | - Xiangli Liu
- Shenzhen Engineering Laboratory of Aerospace Detection and Imaging, Department of Materials Science and Engineering Harbin Institute of Technology (Shenzhen) Shenzhen China
| | - Yan Liu
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
| | - Rui Ma
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
| | - Shichang Sun
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen China
- Research Center for Water Science and Environmental Engineering Shenzhen University Shenzhen China
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Sheppard G, Tassenberg K, Nenchev B, Strickland J, Mesalam R, Shepherd J, Williams H. GAKTpore: Stereological Characterisation Methods for Porous Foams in Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1269. [PMID: 33800080 PMCID: PMC7962185 DOI: 10.3390/ma14051269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/02/2021] [Accepted: 03/04/2021] [Indexed: 11/17/2022]
Abstract
In tissue engineering, scaffolds are a key component that possess a highly elaborate pore structure. Careful characterisation of such porous structures enables the prediction of a variety of large-scale biological responses. In this work, a rapid, efficient, and accurate methodology for 2D bulk porous structure analysis is proposed. The algorithm, "GAKTpore", creates a morphology map allowing quantification and visualisation of spatial feature variation. The software achieves 99.6% and 99.1% mean accuracy for pore diameter and shape factor identification, respectively. There are two main algorithm novelties within this work: (1) feature-dependant homogeneity map; (2) a new waviness function providing insights into the convexity/concavity of pores, important for understanding the influence on cell adhesion and proliferation. The algorithm is applied to foam structures, providing a full characterisation of a 10 mm diameter SEM micrograph (14,784 × 14,915 px) with 190,249 pores in ~9 min and has elucidated new insights into collagen scaffold formation by relating microstructural formation to the bulk formation environment. This novel porosity characterisation algorithm demonstrates its versatility, where accuracy, repeatability, and time are paramount. Thus, GAKTpore offers enormous potential to optimise and enhance scaffolds within tissue engineering.
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Affiliation(s)
- Gareth Sheppard
- School of Engineering, University of Leicester, Leicester LE1 7RH, UK; (K.T.); (B.N.); (J.S.); (J.S.); (H.W.)
| | - Karl Tassenberg
- School of Engineering, University of Leicester, Leicester LE1 7RH, UK; (K.T.); (B.N.); (J.S.); (J.S.); (H.W.)
| | - Bogdan Nenchev
- School of Engineering, University of Leicester, Leicester LE1 7RH, UK; (K.T.); (B.N.); (J.S.); (J.S.); (H.W.)
| | - Joel Strickland
- School of Engineering, University of Leicester, Leicester LE1 7RH, UK; (K.T.); (B.N.); (J.S.); (J.S.); (H.W.)
| | - Ramy Mesalam
- School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK;
| | - Jennifer Shepherd
- School of Engineering, University of Leicester, Leicester LE1 7RH, UK; (K.T.); (B.N.); (J.S.); (J.S.); (H.W.)
| | - Hugo Williams
- School of Engineering, University of Leicester, Leicester LE1 7RH, UK; (K.T.); (B.N.); (J.S.); (J.S.); (H.W.)
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8
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Lee SW, Phillips KS, Gu H, Kazemzadeh-Narbat M, Ren D. How microbes read the map: Effects of implant topography on bacterial adhesion and biofilm formation. Biomaterials 2020; 268:120595. [PMID: 33360301 DOI: 10.1016/j.biomaterials.2020.120595] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/24/2020] [Accepted: 12/06/2020] [Indexed: 12/19/2022]
Abstract
Microbes have remarkable capabilities to attach to the surface of implanted medical devices and form biofilms that adversely impact device function and increase the risk of multidrug-resistant infections. The physicochemical properties of biomaterials have long been known to play an important role in biofilm formation. More recently, a series of discoveries in the natural world have stimulated great interest in the use of 3D surface topography to engineer antifouling materials that resist bacterial colonization. There is also increasing evidence that some medical device surface topographies, such as those designed for tissue integration, may unintentionally promote microbial attachment. Despite a number of reviews on surface topography and biofilm control, there is a missing link between how bacteria sense and respond to 3D surface topographies and the rational design of antifouling materials. Motivated by this gap, we present a review of how bacteria interact with surface topographies, and what can be learned from current laboratory studies of microbial adhesion and biofilm formation on specific topographic features and medical devices. We also address specific biocompatibility considerations and discuss how to improve the assessment of the anti-biofilm performance of topographic surfaces. We conclude that 3D surface topography, whether intended or unintended, is an important consideration in the rational design of safe medical devices. Future research on next-generation smart antifouling materials could benefit from a greater focus on translation to real-world applications.
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Affiliation(s)
- Sang Won Lee
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, 13244, United States; Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, 13244, United States
| | - K Scott Phillips
- United States Food and Drug Administration, Office of Medical Products and Tobacco, Center for Devices and Radiological Health, Office of Science and Engineering Laboratories, Division of Biology, Chemistry, and Materials Science, Silver Spring, MD, 20993, United States.
| | - Huan Gu
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, 13244, United States; Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, 13244, United States
| | - Mehdi Kazemzadeh-Narbat
- United States Food and Drug Administration, Office of Medical Products and Tobacco, Center for Devices and Radiological Health, Office of Product Evaluation and Quality, Office of Health Technology 6, Silver Spring, MD, 20993, United States; Musculoskeletal Clinical Regulatory Advisers (MCRA), Washington DC, 20001, United States
| | - Dacheng Ren
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, 13244, United States; Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, 13244, United States; Department of Civil and Environmental Engineering, Syracuse University, Syracuse, NY, 13244, United States; Department of Biology, Syracuse University, Syracuse, NY, 13244, United States.
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Ni S, Zhai D, Huan Z, Zhang T, Chang J, Wu C. Nanosized concave pit/convex dot microarray for immunomodulatory osteogenesis and angiogenesis. NANOSCALE 2020; 12:16474-16488. [PMID: 32743625 DOI: 10.1039/d0nr03886e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The immunomodulatory capability of biomaterials is of paramount importance for successful material-mediated bone regeneration. Particularly, the design of surface nano-topography can be leveraged to instruct immune reactions, yet the understanding of such "nano-morphology effect" is still very limited. Herein, highly ordered nano-concave pit (denoted as NCPit) and nano-convex dot (denoted as NCDot) microarrays with two different sizes were successfully constructed on a 316LSS surface via anodization and subsequently immersion-coating treatment, respectively. We, for the first time, comparatively investigated the interactions of NCPit and NCDot microarrays with RAW264.7 macrophages and their immunomodulatory impacts on osteogenesis and angiogenesis of human bone mesenchymal stem cells (hBMSCs) and human umbilical vein endothelial cells (HUVECs). NCDot microarrays induced macrophages towards M2 polarization with the higher expression level of anti-inflammatory markers (IL-10 and CD 206) and the lower level of pro-inflammatory markers (TNF-α, IL-1β, IL-6 and CD 86) than those of the corresponding NCPit microarrays. During the process, the expressions of osteogenesis-related genes (Runx2, OPN and OCN) of hBMSCs, and angiogenesis-related genes (eNOS, HIF-1α, KDR and VEGF) of HUVECs were significantly upregulated by the NCDot microarray-modulating immune microenvironment of macrophages, and finally stimulated osteogenesis and angiogenesis. Thus, the prepared NCDot arrays were able to significantly promote osteo-/angiogenic activity by generating a more suitable immune microenvironment than NCPit arrays, offering substantial evidence for designing immunomodulatory biomaterials with specific microstructures and optimal bioactivity.
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Affiliation(s)
- Siyu Ni
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University, North Renmin Road 2999, Shanghai 201620, P. R. China
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Wang C, Wang J, Fu D, Yan Q, Pang D, Zhang Z. Topography guiding the accelerated and persistently directional cell migration induced by vaccinia virus. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.05.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wu X, Liu T, Gao S, Chen S, Lu Q. Single Polar Cell Trapping Based on the Breath Figure Method. ACS OMEGA 2019; 4:20223-20229. [PMID: 31815223 PMCID: PMC6893950 DOI: 10.1021/acsomega.9b02522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 10/11/2019] [Indexed: 06/10/2023]
Abstract
The ability to research individual cells is important for various biological studies. Currently reported biointerfaces for single-cell analysis can only trap individual cells in random morphologies. Cell polarity is a key factor in cellular functions, and the study of single-cell polarity can facilitate an understanding of cancer metastasis and stem-cell differentiation. For single polar cell trapping, anisotropic honeycomb-structured films were prepared. Elastic poly(1,2-butadiene) honeycomb films with ordered hexagonal pores were first prepared via the breath figure method. Subsequently, the films were subjected to mechanical stretching and fixed via photo-cross-linking under UV light irradiation. This stretched honeycomb structure was then transferred to a polystyrene surface. The resultant anisotropic porous films exhibited excellent capacity for single-cell trapping. Besides contributing to the physical spatial confinement of cells, the trapped single cells exhibited orientation in different polarities. The single polar cell array provided a novel platform for fundamental biological research.
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Affiliation(s)
- Xixi Wu
- School of Chemical Science and Engineering and School of Medicine, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Tao Liu
- School of Chemical Science and Engineering and School of Medicine, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Su Gao
- School
of Chemistry and Chemical Engineering, Shanghai
Jiao Tong University, Dongchuan Road 800, Shanghai 200240, China
| | - Shuangshuang Chen
- School of Chemical Science and Engineering and School of Medicine, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Qinghua Lu
- School of Chemical Science and Engineering and School of Medicine, Tongji University, Siping Road 1239, Shanghai 200092, China
- School
of Chemistry and Chemical Engineering, Shanghai
Jiao Tong University, Dongchuan Road 800, Shanghai 200240, China
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Chen S, Gao S, Jing J, Lu Q. Designing 3D Biological Surfaces via the Breath-Figure Method. Adv Healthc Mater 2018; 7:e1701043. [PMID: 29334182 DOI: 10.1002/adhm.201701043] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/17/2017] [Indexed: 11/07/2022]
Abstract
The fabrication of biointerfaces that mimic cellular physiological environments is critical to understanding cell behaviors in vitro and for the design of tissue engineering. Breath figure is a self-assemble method that uses water droplets condensed from moisture as template and ends up with a highly ordered hexagonal pore array; this approach is used to fabricate various biological substrates. This progress report provides an overview of strategies to achieve topographical modifications and chemical-patterned arrays, such as modulation of the pore size, shape and selective decoration of the honeycomb holes. Using recent results in the biological fields, potential future applications and developments of honeycomb structures are commented upon.
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Affiliation(s)
- Shuangshuang Chen
- School of Chemical Science and Engineering Tongji University Shanghai 200092 China
| | - Su Gao
- Department of Polymer Science and Engineering School of Chemistry and Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200240 China
| | - Jiange Jing
- Department of Polymer Science and Engineering School of Chemistry and Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200240 China
| | - Qinghua Lu
- School of Chemical Science and Engineering Tongji University Shanghai 200092 China
- Department of Polymer Science and Engineering School of Chemistry and Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200240 China
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