1
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Kawaai K, Kuroda Y, Matsuo K. Calcified Cartilage-Guided Identification of Osteogenic Molecules and Geometries. ACS Biomater Sci Eng 2024. [PMID: 38634615 DOI: 10.1021/acsbiomaterials.3c01799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Calcified cartilage digested by chondroclasts provides an excellent scaffold to initiate bone formation. We analyzed bioactive proteins and microarchitecture of calcified cartilage either separately or in combination and evaluated biomimetic osteogenic culture conditions of surface-coated micropatterning. To do so, we prepared a crude extract from porcine femoral growth plates, which enhanced in vitro mineralization when coated on flat-bottom culture dishes, and identified four candidate proteins by fractionation and mass spectrometry. Murine homologues of two candidates, desmoglein 4 (DSG4) and peroxiredoxin 6 (PRDX6), significantly promoted osteogenic activity based on in vitro mineralization and osteoblast differentiation. Moreover, we observed DSG4 and PRDX6 protein expression in mouse femur. In addition, we designed circular, triangular, and honeycomb micropatterns with 30 or 50 μm units, either isolated or connected, to mimic hypertrophic chondrocyte-sized compartments. Isolated, larger honeycomb patterns particularly enhanced osteogenesis in vitro. Mineralization on micropatterns was positively correlated with the reduction of osteoblast migration distance in live cell imaging. Finally, we evaluated possible combinatorial effects of coat proteins and micropatterns and observed an additive effect of DSG4 or PRDX6 coating with micropatterns. These data suggest that combining a bioactive surface coating with osteogenic micropatterns may recapitulate initiation of bone formation during endochondral ossification.
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Affiliation(s)
- Katsuhiro Kawaai
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
| | - Yukiko Kuroda
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
| | - Koichi Matsuo
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
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2
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Li Y, Jiang W, Zhou X, Long Y, Sun Y, Zeng Y, Yao X. Advances in Regulating Cellular Behavior Using Micropatterns. Yale J Biol Med 2023; 96:527-547. [PMID: 38161579 PMCID: PMC10751872 DOI: 10.59249/uxoh1740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Micropatterns, characterized as distinct physical microstructures or chemical adhesion matrices on substance surfaces, have emerged as a powerful tool for manipulating cellular activity. By creating specific extracellular matrix microenvironments, micropatterns can influence various cell behaviors, including orientation, proliferation, migration, and differentiation. This review provides a comprehensive overview of the latest advancements in the use of micropatterns for cell behavior regulation. It discusses the influence of micropattern morphology and coating on cell behavior and the underlying mechanisms. It also highlights future research directions in this field, aiming to inspire new investigations in materials medicine, regenerative medicine, and tissue engineering. The review underscores the potential of micropatterns as a novel approach for controlling cell behavior, which could pave the way for breakthroughs in various biomedical applications.
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Affiliation(s)
- Yizhou Li
- Institute of Biomedical Engineering, West China School
of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu,
P.R. China
- State Key Laboratory of Oral Diseases & National
Center for Stomatology & National Clinical Research Center for Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, P.R.
China
| | - Wenli Jiang
- Institute of Biomedical Engineering, West China School
of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu,
P.R. China
| | - Xintong Zhou
- Institute of Biomedical Engineering, West China School
of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu,
P.R. China
| | - Yicen Long
- Institute of Biomedical Engineering, West China School
of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu,
P.R. China
| | - Yujia Sun
- Institute of Biomedical Engineering, West China School
of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu,
P.R. China
| | - Ye Zeng
- Institute of Biomedical Engineering, West China School
of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu,
P.R. China
| | - Xinghong Yao
- Radiation Oncology Key Laboratory of Sichuan Province,
Department of Radiotherapy, Sichuan Clinical Research Center for Cancer, Sichuan
Cancer Hospital and Institute, Sichuan Cancer Center, Affiliated Cancer Hospital
of University of Electronic Science and Technology of China, Chengdu, P.R.
China
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3
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Savulescu AF, Peton N, Oosthuizen D, Hazra R, Rousseau RP, Mhlanga MM, Coussens AK. Quantifying spatial dynamics of Mycobacterium tuberculosis infection of human macrophages using microfabricated patterns. Cell Rep Methods 2023; 3:100640. [PMID: 37963461 PMCID: PMC10694489 DOI: 10.1016/j.crmeth.2023.100640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 05/03/2023] [Accepted: 10/19/2023] [Indexed: 11/16/2023]
Abstract
Macrophages provide a first line of defense against invading pathogens, including the leading cause of bacterial mortality, Mycobacterium tuberculosis (Mtb). A challenge for quantitative characterization of host-pathogen processes in differentially polarized primary human monocyte-derived macrophages (MDMs) is their heterogeneous morphology. Here, we describe the use of microfabricated patterns that constrain the size and shape of cells, mimicking the physiological spatial confinement cells experience in tissues, to quantitatively characterize interactions during and after phagocytosis at the single-cell level at high resolution. Comparing pro-inflammatory (M1) and anti-inflammatory (M2) MDMs, we find interferon-γ stimulation increases the phagocytic contraction, while contraction and bacterial uptake decrease following silencing of phagocytosis regulator NHLRC2 or bacterial surface lipid removal. We identify host organelle position alterations within infected MDMs and differences in Mtb subcellular localization in line with M1 and M2 cellular polarity. Our approach can be adapted to study other host-pathogen interactions and coupled with downstream automated analytical approaches.
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Affiliation(s)
- Anca F Savulescu
- Division of Chemical, Systems, & Synthetic Biology, Institute for Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa.
| | - Nashied Peton
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa; Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Pathology, University of Cape Town, Observatory 7925, South Africa
| | - Delia Oosthuizen
- Division of Chemical, Systems, & Synthetic Biology, Institute for Infectious Disease & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa
| | - Rudranil Hazra
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa
| | - Robert P Rousseau
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa
| | - Musa M Mhlanga
- Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands; Epigenomics & Single Cell Biophysics Group, Department of Cell Biology, FNWI, Radboud University, 6525 GA Nijmegen, the Netherlands; Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands.
| | - Anna K Coussens
- Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa; Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Pathology, University of Cape Town, Observatory 7925, South Africa; Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia.
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4
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Freeburne E, Teague S, Khan H, Li B, Ding S, Chen B, Helms A, Heemskerk I. Spatial Single Cell Analysis of Proteins in 2D Human Gastruloids Using Iterative Immunofluorescence. Curr Protoc 2023; 3:e915. [PMID: 37882990 DOI: 10.1002/cpz1.915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
During development, cell signaling instructs tissue patterning, the process by which initially identical cells give rise to spatially organized structures consisting of different cell types. How multiple signals combinatorially instruct fate in space and time remains poorly understood. Simultaneous measurement of signaling activity through multiple signaling pathways and of the cell fates they control is critical to addressing this problem. Here we describe an iterative immunofluorescence protocol and computational pipeline to interrogate pattern formation in a 2D model of human gastrulation with far greater multiplexing than is possible with standard immunofluorescence techniques. This protocol and computational pipeline together enable imaging followed by spatial and co-localization analysis of over 27 proteins in the same gastruloids. We demonstrate this by clustering single cell protein expression, using techniques familiar from scRNA-seq, and linking this to spatial position to calculate spatial distributions and cell signaling activity of different cell types. These methods are not limited to patterning in 2D gastruloids and can be easily extended to other contexts. In addition to the iterative immunofluorescence protocol and analysis pipeline, Support Protocols for 2D gastruloid differentiation and producing micropatterned multi-well slides are included. © 2023 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Iterative immunofluorescence Basic Protocol 2: Computational analysis pipeline Support Protocol 1: Generating micropatterned multi-well slides Support Protocol 2: Differentiation of 2D gastruloids.
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Affiliation(s)
- Emily Freeburne
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Seth Teague
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Hina Khan
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Bolin Li
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Siyuan Ding
- Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, Michigan
| | - Bohan Chen
- Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, Michigan
| | - Adam Helms
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan
| | - Idse Heemskerk
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
- Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, Michigan
- Center for Cell Plasticity and Organ Design, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Physics, University of Michigan, Ann Arbor, Michigan
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5
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Lu C, Zheng J, Yoshitomi T, Kawazoe N, Yang Y, Chen G. How Hydrogel Stiffness Affects Adipogenic Differentiation of Mesenchymal Stem Cells under Controlled Morphology. ACS Appl Bio Mater 2023; 6:3441-3450. [PMID: 37061939 DOI: 10.1021/acsabm.3c00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
Matrix stiffness has been disclosed as an essential regulator of cell fate. However, it is barely studied how the matrix stiffness affects stem cell functions when cell morphology changes. Thus, in this study, the effect of hydrogel stiffness on adipogenic differentiation of human bone-marrow-derived mesenchymal stem cells (hMSCs) with controlled morphology was investigated. Micropatterns of different size and elongation were prepared by a photolithographical micropatterning technique. The hMSCs were cultured on the micropatterns and showed a different spreading area and elongation following the geometry of the underlying micropatterns. The cells with controlled morphology were embedded in agarose hydrogels of different stiffnesses. The cells showed a different level of adipogenic differentiation that was dependent on both hydrogel stiffness and cell morphology. Adipogenic differentiation became strong when the cell spreading area decreased and hydrogel stiffness increased. Adipogenic differentiation did not change with cell elongation. Therefore, cell spreading area and hydrogel stiffness could synergistically affect adipogenic differentiation of hMSCs, while cell elongation did not affect adipogenic differentiation. A change of cell morphology and hydrogel stiffness was accompanied by actin filament alignment that was strongly related to adipogenic differentiation. The results indicated that cell morphology could affect cellular sensitivity to hydrogel stiffness. The results will provide useful information for the elucidation of the interaction of stem cells and their microenvironmental biomechanical cues.
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Affiliation(s)
- Chengyu Lu
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Jing Zheng
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Toru Yoshitomi
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Naoki Kawazoe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yingnan Yang
- Graduate School of Life and Environment Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Guoping Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
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6
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Ruppel A, Wörthmüller D, Misiak V, Kelkar M, Wang I, Moreau P, Méry A, Révilloud J, Charras G, Cappello G, Boudou T, Schwarz US, Balland M. Force propagation between epithelial cells depends on active coupling and mechano-structural polarization. eLife 2023; 12:e83588. [PMID: 37548995 PMCID: PMC10511242 DOI: 10.7554/elife.83588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 08/07/2023] [Indexed: 08/08/2023] Open
Abstract
Cell-generated forces play a major role in coordinating the large-scale behavior of cell assemblies, in particular during development, wound healing, and cancer. Mechanical signals propagate faster than biochemical signals, but can have similar effects, especially in epithelial tissues with strong cell-cell adhesion. However, a quantitative description of the transmission chain from force generation in a sender cell, force propagation across cell-cell boundaries, and the concomitant response of receiver cells is missing. For a quantitative analysis of this important situation, here we propose a minimal model system of two epithelial cells on an H-pattern ('cell doublet'). After optogenetically activating RhoA, a major regulator of cell contractility, in the sender cell, we measure the mechanical response of the receiver cell by traction force and monolayer stress microscopies. In general, we find that the receiver cells show an active response so that the cell doublet forms a coherent unit. However, force propagation and response of the receiver cell also strongly depend on the mechano-structural polarization in the cell assembly, which is controlled by cell-matrix adhesion to the adhesive micropattern. We find that the response of the receiver cell is stronger when the mechano-structural polarization axis is oriented perpendicular to the direction of force propagation, reminiscent of the Poisson effect in passive materials. We finally show that the same effects are at work in small tissues. Our work demonstrates that cellular organization and active mechanical response of a tissue are key to maintain signal strength and lead to the emergence of elasticity, which means that signals are not dissipated like in a viscous system, but can propagate over large distances.
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Affiliation(s)
- Artur Ruppel
- Université Grenoble Alpes, CNRS, LIPhyGrenobleFrance
| | - Dennis Wörthmüller
- Institute for Theoretical Physics, Heidelberg UniversityHeidelbergGermany
- BioQuant–Center for Quantitative Biology, Heidelberg UniversityHeidelbergGermany
| | | | - Manasi Kelkar
- London Centre for Nanotechnology, University College LondonLondonUnited Kingdom
| | - Irène Wang
- Université Grenoble Alpes, CNRS, LIPhyGrenobleFrance
| | | | - Adrien Méry
- Université Grenoble Alpes, CNRS, LIPhyGrenobleFrance
| | | | - Guillaume Charras
- London Centre for Nanotechnology, University College LondonLondonUnited Kingdom
- Department of Cell and Developmental Biology, University College LondonLondonUnited Kingdom
- Institute for the Physics of Living Systems, University College LondonLondonUnited Kingdom
| | | | - Thomas Boudou
- Université Grenoble Alpes, CNRS, LIPhyGrenobleFrance
| | - Ulrich S Schwarz
- Institute for Theoretical Physics, Heidelberg UniversityHeidelbergGermany
- BioQuant–Center for Quantitative Biology, Heidelberg UniversityHeidelbergGermany
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7
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Yue Y, Yang J, Zheng B, Huo L, Dong H, Wang J, Jiang L. Asymmetric Wettability Mediated Patterning of Single Crystalline Nematic Liquid Crystal and P-N Heterojunction Toward a Broadband Photodetector. ACS Appl Mater Interfaces 2023; 15:13371-13379. [PMID: 36862587 DOI: 10.1021/acsami.2c21664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The well aligned and precise patterning of liquid crystals (LCs) are considered as two key challenges for large-scale and high-efficiency integrated optoelectronic devices. However, owing to the uncontrollable liquid flow and dewetting process in the conventional techniques, most of the reported research is mainly focused on simple sematic LCs, which are composed of terthiophenes or benzothieno[3, 2-b][1] benzothiophene backbone; only a few works are carried out on the complicated LCs. Herein, an efficient strategy was introduced to control the liquid flow and alignment of LCs and realized precise and high-quality patterning of A-π-D-π-A BTR, based on the asymmetric wettability interface. Through this strategy, the large-area and well-aligned BTR microwires array was fabricated, which exhibited highly ordered molecular packing and improved charge transport performance. Furthermore, the integration of BTR and PC71BM was achieved to manufacture uniform P-N heterojunction arrays, which still possessed highly ordered alignment of BTR. On the basis of these aligned heterojunction arrays, the high-performance photodetector exhibited an excellent responsivity of 27.56 A W-1 and a specific detectivity of 2.07 × 1012 Jones. This research not only provides an efficient strategy for the fabrication of aligned micropatterns of LCs but also gives a novel insight for the fabrication of high-quality micropatterns of the P-N heterojunction toward integrated optoelectronics.
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Affiliation(s)
- Yuchen Yue
- CAS Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences (UCAS), Beijing 100049, P. R. China
| | - Jiaxin Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Bing Zheng
- School of Chemistry, Beihang University, Beijing 100190, P. R. China
| | - Lijun Huo
- School of Chemistry, Beihang University, Beijing 100190, P. R. China
| | - Huanli Dong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jingxia Wang
- CAS Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences (UCAS), Beijing 100049, P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bioinspired Smart Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Chemistry, Beihang University, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences (UCAS), Beijing 100049, P. R. China
- Ji Hua Laboratory, Foshan 528000, Guangdong, P. R. China
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8
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Antmen E, Ermis M, Kuren O, Beksac K, Irkkan C, Hasirci V. Nuclear Deformability of Breast Cells Analyzed from Patients with Malignant and Benign Breast Diseases. ACS Biomater Sci Eng 2023; 9:1629-1643. [PMID: 36706038 DOI: 10.1021/acsbiomaterials.2c01059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Breast cancer is a heterogeneous and dynamic disease, in which cancer cells are highly responsive to alterations in the microenvironment. Today, conventional methods of detecting cancer give a rather static image of the condition of the disease, so dynamic properties such as invasiveness and metastasis are difficult to capture. In this study, conventional molecular-level evaluations of the patients with breast adenocarcinoma were combined with in vitro methods on micropatterned poly(methyl methacrylate) (PMMA) biomaterial surfaces that deform cells. A correlation between deformability of the nuclei and cancer stemness, invasiveness, and metastasis was sought. Clinical patient samples were from regions of the breast with different proximities to the tumor. Responses at the single-cell level toward the micropatterned surfaces were studied using CD44/24, epithelial cell adhesion marker (EpCAM), MUC1, and PCK. Results showed that molecular markers and shape descriptors can discriminate the cells from different proximities to the tumor center and from different patients. The cells with the most metastatic and invasive properties showed both the highest deformability and the highest level of metastatic markers. In conclusion, by using a combination of molecular markers together with nuclear deformation, it is possible to improve detection and separation of subpopulations in heterogenous breast cancer specimens at the single-cell level.
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Affiliation(s)
- Ezgi Antmen
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara06800, Turkey
| | - Menekse Ermis
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara06800, Turkey
| | - Ozgur Kuren
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara06800, Turkey
| | - Kemal Beksac
- Department of General Surgery, Ankara Oncology Hospital, Yenimahalle, Ankara06800, Turkey
| | - Cigdem Irkkan
- Department of Pathology, Ankara Oncology Hospital, Yenimahalle, Ankara06800, Turkey
| | - Vasif Hasirci
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara06800, Turkey
- Department of Biomedical Engineering, Acibadem Mehmet Ali Aydinlar University (ACU), Istanbul34752, Turkey
- ACU Biomaterials Center, Acibadem Mehmet Ali Aydinlar University (ACU), Atasehir, Istanbul34752, Turkey
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9
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Wang H, Zhou H, He W, Yang Z, Cao H, Wang D, Li Y. Research Progress on Blue-Phase Liquid Crystals for Pattern Replication Applications. Materials (Basel) 2022; 16:194. [PMID: 36614533 PMCID: PMC9821960 DOI: 10.3390/ma16010194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Blue-Phase Liquid Crystals (BPLCs) are considered to be excellent 3D photonic crystals and have attracted a great deal of attention due to their great potential for advanced applications in a wide range of fields including self-assembling tunable photonic crystals and fast-response displays. BPLCs exhibit promise in patterned applications due to their sub-millisecond response time, three-dimensional cubic structure, macroscopic optical isotropy and high contrast ratio. The diversity of patterned applications developed based on BPLCs has attracted much attention. This paper focuses on the latest advances in blue-phase (BP) materials, including applications in patterned microscopy, electric field driving, handwriting driving, optical writing and inkjet printing. The paper concludes with future challenges and opportunities for BP materials, providing important insights into the subsequent development of BP.
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Affiliation(s)
| | | | - Wanli He
- Correspondence: ; Tel.: +010-62333759
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10
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Kim J, Kim M, Jung H, Park J, Jun BO, Kang B, Jang JE, Lee Y. High-Quality Microprintable and Stretchable Conductors for High-Performance 5G Wireless Communication. ACS Appl Mater Interfaces 2022; 14:53250-53260. [PMID: 36382782 DOI: 10.1021/acsami.2c18424] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
With the advent of 5G wireless and Internet of Things technologies, flexible and stretchable printed circuit boards (PCBs) should be designed to address all the specifications necessary to receive signal transmissions, maintaining the signal integrity, and providing electrical connections. Here, we propose a silver nanoparticle (AgNP)/silver nanowire (AgNW) hybrid conductor and high-quality microprinting technology for fabricating flexible and stretchable PCBs in high-performance 5G wireless communication. A simple and low-cost reverse offset printing technique using a commercial adhesive hand-roller was adapted to ensure high-resolution and excellent pattern quality. The AgNP/AgNW micropatterns were fabricated in various line widths, from 5 μm to 5 mm. They exhibited excellent pattern qualities, such as fine line spacing, clear edge definition and outstanding pattern uniformity. After annealing via intense pulsed light irradiation, they showed outstanding electrical resistivity (15.7 μΩ cm). Moreover, they could withstand stretching up to a strain of 90% with a small change in resistance. As a demonstration of their practical application, the AgNP/AgNW micropatterns were used to fabricate 5G communication antennas that exhibited excellent wireless signal processing at operating frequencies in the C-band (4-8 GHz). Finally, a wearable sensor fabricated with these AgNP/AgNW micropatterns could successfully detected fine finger movements in real time with excellent sensitivity.
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Affiliation(s)
- Jongyoun Kim
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
| | - Minkyoung Kim
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
| | - Hyeonwoo Jung
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
| | - Jaehyoung Park
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
| | - Byoung Ok Jun
- Department of Electrical Engineering & Computer Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
| | - Byeongjae Kang
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
| | - Jae Eun Jang
- Department of Electrical Engineering & Computer Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
| | - Youngu Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea
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Kim T, Kwak S, Hwang M, Hong J, Choi J, Yeom B, Kim Y. Recognition of 3D Chiral Microenvironments for Myoblast Differentiation. ACS Biomater Sci Eng 2022; 8:4230-4235. [PMID: 36169613 DOI: 10.1021/acsbiomaterials.2c00480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cell chirality plays a critical role in the linkage between molecular chirality and the asymmetrical biological functions of body organs. However, enantioselective interactions between cell chirality and the extracellular environment are not yet fully understood. In this study, we investigated the effects of structurally chiral extracellular microenvironments on cellular alignments and differentiations. Twisted wrinkle-shaped chiral micropatterns were prepared using biaxial and asymmetric buckling methods, wherein structural handedness was determined from the orientation of the tilt angle between the first and second microwrinkles. Myoblasts were separately cultured on two enantiomeric chiral micropatterns in a mirror-reflected shape. Cells cultured on the left-handed chiral micropatterns preferred alignments along the direction of the second microwrinkle, with a relatively deeper valley than that of the first microwrinkle. The aligned cells on the left-handed pattern showed higher differentiation rates, as assessed by fusion indices and marker protein expression levels, than those cultured on right-handed chiral micropatterns. These results suggest that myoblasts exhibit enantioselective recognition of structurally chiral microenvironments, which can promote cellular alignments and differentiation.
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Affiliation(s)
- Taeyeon Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
| | - Seran Kwak
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Myonghoo Hwang
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jinwoo Hong
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
| | - Jonghoon Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Bongjun Yeom
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Yongju Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea.,Department of Integrative Energy Engineering, Korea University, Seoul 02841, Republic of Korea
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12
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Chen L, Hu Y, Huang H, Liu C, Zang Y, Wu D, Xia J. Femtosecond Laser-Assisted Device Engineering: Toward Organic Field-Effect Transistor-Based High-Performance Gas Sensors. ACS Appl Mater Interfaces 2022; 14:32299-32307. [PMID: 35796606 DOI: 10.1021/acsami.2c06904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Organic electronic-based gas sensors hold great potential for portable healthcare- and environment-monitoring applications. It has recently been shown that introducing a porous structure into an organic semiconductor (OSC) film is an efficient way to improve the gas-sensing performance because it facilitates the interaction between the gaseous analyte and the active layer. Although several methods have been used to generate porous structures, the development of a robust approach that can facilely engineer the porous OSC film with a uniform pore pattern remains a challenge. Here, we demonstrate a robust approach to fabricate porous OSC films by using a femtosecond laser-processed porous dielectric layer template. With this laser-assisted strategy, various polymeric OSC layers with controllable pore size and well-defined pore patterns were achieved. The consequent porous p-type polymer-based device exhibits enhanced sensitivity to the ammonia analyte in the range from 100 ppb to 10 ppm with remarkable reproducibility and selectivity. The micropattern of the active layer was precisely controlled by generating various pore densities in the predecorated templates, which results in modulated ammonia sensitivities ranging from 30 to 65% ppm-1. Furthermore, we show that this approach can be used to fabricate flexible gas sensors with enhanced sensing performance and mechanical durability, which indicate that this femtosecond laser-assisted approach is very promising for the fabrication of next-generation wearable electronics.
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Affiliation(s)
- Li Chen
- School of Chemistry, Chemical Engineering and Life Science, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, No. 122 Luoshi Road, Wuhan 430070, China
| | - Yuzhou Hu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan 430070, China
| | - Huaxi Huang
- School of Chemistry, Chemical Engineering and Life Science, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, No. 122 Luoshi Road, Wuhan 430070, China
| | - Chao Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan 430070, China
| | - Yaping Zang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Di Wu
- School of Chemistry, Chemical Engineering and Life Science, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, No. 122 Luoshi Road, Wuhan 430070, China
| | - Jianlong Xia
- School of Chemistry, Chemical Engineering and Life Science, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center of Smart Materials and Devices, Wuhan University of Technology, No. 122 Luoshi Road, Wuhan 430070, China
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13
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Zhao Y, Sun Q, Huo B. Focal adhesion regulates osteogenic differentiation of mesenchymal stem cells and osteoblasts. Biomater Transl 2021; 2:312-322. [PMID: 35837413 PMCID: PMC9255797 DOI: 10.12336/biomatertransl.2021.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/29/2021] [Accepted: 12/10/2021] [Indexed: 11/18/2022]
Abstract
Focal adhesions are large macromolecular assemblies through which cells are connected with the extracellular matrix so that extracellular signals can be transmitted inside cells. Some studies have focused on the effect of cell shape on the differentiation of stem cells, but little attention has been paid to focal adhesion. In the present study, mesenchymal stem cells (MSCs) and osteoblast-like MC3T3-E1 cells were seeded onto micropatterned substrates on which circular adhesive islands with different spacing and area were created for focal adhesion. Results showed that the patterns of focal adhesion changed cell morphology but did not affect cell survival. For MSCs cultured for 3 days, patterns with small circles and large spacing promoted osteogenesis. For MSCs cultured for 7 days, patterns with large circles and spacing enhanced osteogenesis. For MC3T3-E1 cells, the patterns of focal adhesion had no effect on cell differentiation after 3 days of culture, but patterns with small circles and spacing improved osteogenic differentiation after 7 days. Moreover, the assembly of F-actin, phosphorylation of myosin, and nuclear translocation of yes-associated proteins (YAP) were consistent with the expression of differentiation markers, indicating that the pattern of focal adhesion may affect the osteogenesis of MSCs and osteoblasts through changes in cytoskeletal tension and nuclear localisation of YAP.
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Affiliation(s)
| | | | - Bo Huo
- Corresponding author: Bo Huo,
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14
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Abdalkader R, Konishi S, Fujita T. The Development of Biomimetic Aligned Skeletal Muscles in a Fully 3D Printed Microfluidic Device. Biomimetics (Basel) 2021; 7:2. [PMID: 35076457 DOI: 10.3390/biomimetics7010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 11/16/2022] Open
Abstract
Human skeletal muscles are characterized by a unique aligned microstructure of myotubes which is important for their function as well as for their homeostasis. Thus, the recapitulation of the aligned microstructure of skeletal muscles is crucial for the construction of an advanced biomimetic model aimed at drug development applications. Here, we have developed a 3D printed micropatterned microfluid device (3D-PMMD) through the employment of a fused deposition modeling (FDM)-based 3D printer and clear filaments made of biocompatible polyethylene terephthalate glycol (PETG). We could fabricate micropatterns through the adjustment of the printing deposition heights of PETG filaments, leading to the generation of aligned half-cylinder-shaped micropatterns in a dimension range from 100 µm to 400 µm in width and from 60 µm to 150 µm in height, respectively. Moreover, we could grow and expand C2C12 mouse myoblast cells on 3D-PMMD where cells could differentiate into aligned bundles of myotubes with respect to the dimension of each micropattern. Furthermore, our platform was applicable with the electrical pulses stimulus (EPS) modality where we noticed an improvement in myotubes maturation under the EPS conditions, indicating the potential use of the 3D-PMMD for biological experiments as well as for myogenic drug development applications in the future.
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15
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Chen D, Tan H, Xu T, Wang W, Chen H, Zhang J. Micropatterned PEDOT with Enhanced Electrochromism and Electrochemical Tunable Diffraction. ACS Appl Mater Interfaces 2021; 13:58011-58018. [PMID: 34797985 DOI: 10.1021/acsami.1c17897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Micro-nanofabrication of conductive polymers (CPs) with functional structures is in great demand in organic electronic devices, micro-optics, and flex sensors. Here, we report the fabrication of micropatterned poly(3,4-ethylenedioxythiophene) (PEDOT) and its applications on flexible electrochromic devices and tunable diffractive optics. The localized electropolymerization of 3,4-ethylenedioxythiophene at the electrode/agarose gel stamping interface through an electrochemical wet stamping (E-WETS) technique is used to fabricate PEDOT with functional microstructures. PEDOT microdots, micro-rectangles, and interdigitated array microelectrodes are fabricated with submicron tolerance and ∼2 μm smallest feature size. Furthermore, the flexible PEDOT electrochromic devices consisting of the logo of Xiamen University are fabricated with a reversible switch of absorptivity. The improved optical and coloration-amperometric responses of electrochromism are demonstrated because of the enhanced charge transport rate of the micropatterned PEDOT. The electrochromism of the 2D PEDOT micropatterns is further used as a binary diffractive optical element to modulate the intensity and efficiency of diffracted 2D structural light because of the switchable absorptivity during doping and dedoping processes. When the potential is switched from 1 to -1 V to tune the absorptivity at ∼600 nm from low to high, the intensity of zero-order diffraction light spot decreases with the intensity of other order diffraction light spots increasing dramatically. The results demonstrate that E-WETS provides an alternative method for the fabrication of CPs with functional micro-nanostructures. The electrochemical tunable diffraction with high reversibility and fast response is of potential applications in micro-optics and flex sensors.
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Affiliation(s)
- Duan Chen
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Hao Tan
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Tianyi Xu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Wei Wang
- College of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, Jiangxi 343009, China
| | - Hezhang Chen
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Jie Zhang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
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16
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Kim JH, Ryu JR, Lee B, Chae U, Son JW, Park BH, Cho IJ, Sun W. Interpreting the Entire Connectivity of Individual Neurons in Micropatterned Neural Culture With an Integrated Connectome Analyzer of a Neuronal Network (iCANN). Front Neuroanat 2021; 15:746057. [PMID: 34744642 PMCID: PMC8564400 DOI: 10.3389/fnana.2021.746057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/23/2021] [Indexed: 11/13/2022] Open
Abstract
The function of a neural circuit can be determined by the following: (1) characteristics of individual neurons composing the circuit, (2) their distinct connection structure, and (3) their neural circuit activity. However, prior research on correlations between these three factors revealed many limitations. In particular, profiling and modeling of the connectivity of complex neural circuits at the cellular level are highly challenging. To reduce the burden of the analysis, we suggest a new approach with simplification of the neural connection in an array of honeycomb patterns on 2D, using a microcontact printing technique. Through a series of guided neuronal growths in defined honeycomb patterns, a simplified neuronal circuit was achieved. Our approach allowed us to obtain the whole network connectivity at cellular resolution using a combination of stochastic multicolor labeling via viral transfection. Therefore, we were able to identify several types of hub neurons with distinct connectivity features. We also compared the structural differences between different circuits using three-node motif analysis. This new model system, iCANN, is the first experimental model of neural computation at the cellular level, providing neuronal circuit structures for the study of the relationship between anatomical structure and function of the neuronal network.
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Affiliation(s)
- June Hoan Kim
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Jae Ryun Ryu
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Boram Lee
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Uikyu Chae
- Center for BioMicrosystems, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, South Korea
| | - Jong Wan Son
- Division of Quantum Phases and Devices, Department of Physics, Konkuk University, Seoul, South Korea
| | - Bae Ho Park
- Division of Quantum Phases and Devices, Department of Physics, Konkuk University, Seoul, South Korea
| | - Il-Joo Cho
- Center for BioMicrosystems, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, South Korea
| | - Woong Sun
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
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17
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Napiwocki B, Stempien A, Lang D, Kruepke R, Kim G, Zhang J, Eckhardt L, Glukhov A, Kamp T, Crone W. Micropattern platform promotes extracellular matrix remodeling by human PSC-derived cardiac fibroblasts and enhances contractility of co-cultured cardiomyocytes. Physiol Rep 2021; 9:e15045. [PMID: 34617673 PMCID: PMC8496154 DOI: 10.14814/phy2.15045] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 08/20/2021] [Accepted: 08/31/2021] [Indexed: 02/02/2023] Open
Abstract
In native heart tissue, cardiac fibroblasts provide the structural framework of extracellular matrix (ECM) while also influencing the electrical and mechanical properties of cardiomyocytes. Recent advances in the field of stem cell differentiation have led to the availability of human pluripotent stem cell-derived cardiac fibroblasts (iPSC-CFs) in addition to cardiomyocytes (iPSC-CMs). Here we use a novel 2D in vitro micropatterned platform that provides control over ECM geometry and substrate stiffness. When cultured alone on soft micropatterned substrates, iPSC-CFs are confined to the micropatterned features and remodel the ECM into anisotropic fibers. Similar remodeling and ECM production occurs when cultured with iPSC-CMs in a co-culture model. In addition to modifications in the ECM, our results show that iPSC-CFs influence iPSC-CM function with accelerated Ca2+ transient rise-up time and greater contractile strains in the co-culture conditions compared to when iPSC-CMs are cultured alone. These combined observations highlight the important role cardiac fibroblasts play in vivo and the need for co-culture models like the one presented here to provide more representative in vitro cardiac constructs.
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Affiliation(s)
- B.N. Napiwocki
- Department of Biomedical EngineeringUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Wisconsin Institute for DiscoveryUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - A. Stempien
- Department of Biomedical EngineeringUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Wisconsin Institute for DiscoveryUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - D. Lang
- Department of MedicineDivision of Cardiovascular MedicineUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - R.A. Kruepke
- Engineering Mechanics ProgramUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - G. Kim
- Department of MedicineDivision of Cardiovascular MedicineUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - J. Zhang
- Department of MedicineDivision of Cardiovascular MedicineUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - L.L. Eckhardt
- Department of MedicineDivision of Cardiovascular MedicineUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - A.V. Glukhov
- Department of MedicineDivision of Cardiovascular MedicineUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - T.J. Kamp
- Department of MedicineDivision of Cardiovascular MedicineUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Department of Cell and Regenerative BiologyUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - W.C. Crone
- Department of Biomedical EngineeringUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Wisconsin Institute for DiscoveryUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Engineering Mechanics ProgramUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
- Department of Engineering PhysicsUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
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18
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Obst M, Arnauts G, Cruz AJ, Calderon Gonzalez M, Marcoen K, Hauffman T, Ameloot R. Chemical Vapor Deposition of Ionic Liquids for the Fabrication of Ionogel Films and Patterns. Angew Chem Int Ed Engl 2021; 60:25668-25673. [PMID: 34478224 DOI: 10.1002/anie.202110022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Indexed: 11/08/2022]
Abstract
Film deposition and high-resolution patterning of ionic liquids (ILs) remain a challenge, despite a broad range of applications that would benefit from this type of processing. Here, we demonstrate for the first time the chemical vapor deposition (CVD) of ILs. The IL-CVD method is based on the formation of a non-volatile IL through the reaction of two vaporized precursors. Ionogel micropatterns can be easily obtained via the combination of IL-CVD and standard photolithography, and the resulting microdrop arrays can be used as microreactors. The IL-CVD approach will facilitate leveraging the properties of ILs in a range of applications and microfabricated devices.
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Affiliation(s)
- Martin Obst
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, KU Leuven, Leuven, Belgium
| | - Giel Arnauts
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, KU Leuven, Leuven, Belgium
| | - Alexander John Cruz
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, KU Leuven, Leuven, Belgium.,Research Group of Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Maider Calderon Gonzalez
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, KU Leuven, Leuven, Belgium
| | - Kristof Marcoen
- Research Group of Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Tom Hauffman
- Research Group of Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Rob Ameloot
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, KU Leuven, Leuven, Belgium
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19
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Chen Z, Oh D, Biswas KH, Zaidel-Bar R, Groves JT. Probing the effect of clustering on EphA2 receptor signaling efficiency by subcellular control of ligand-receptor mobility. eLife 2021; 10:67379. [PMID: 34414885 PMCID: PMC8397371 DOI: 10.7554/elife.67379] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 08/19/2021] [Indexed: 11/29/2022] Open
Abstract
Clustering of ligand:receptor complexes on the cell membrane is widely presumed to have functional consequences for subsequent signal transduction. However, it is experimentally challenging to selectively manipulate receptor clustering without altering other biochemical aspects of the cellular system. Here, we develop a microfabrication strategy to produce substrates displaying mobile and immobile ligands that are separated by roughly 1 µm, and thus experience an identical cytoplasmic signaling state, enabling precision comparison of downstream signaling reactions. Applying this approach to characterize the ephrinA1:EphA2 signaling system reveals that EphA2 clustering enhances both receptor phosphorylation and downstream signaling activity. Single-molecule imaging clearly resolves increased molecular binding dwell times at EphA2 clusters for both Grb2:SOS and NCK:N-WASP signaling modules. This type of intracellular comparison enables a substantially higher degree of quantitative analysis than is possible when comparisons must be made between different cells and essentially eliminates the effects of cellular response to ligand manipulation.
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Affiliation(s)
- Zhongwen Chen
- Multiscale Research Institute of Complex Systems, Fudan University, Shanghai, China.,Department of Chemistry, University of California, Berkeley, Berkeley, United States
| | - Dongmyung Oh
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch at Galveston, Galveston, United States.,Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Kabir Hassan Biswas
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Ronen Zaidel-Bar
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jay T Groves
- Department of Chemistry, University of California, Berkeley, Berkeley, United States
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20
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Gontran E, Loarca L, El Kassis C, Bouzhir L, Ayollo D, Mazari-Arrighi E, Fuchs A, Dupuis-Williams P. Self-Organogenesis from 2D Micropatterns to 3D Biomimetic Biliary Trees. Bioengineering (Basel) 2021; 8:112. [PMID: 34436115 PMCID: PMC8389215 DOI: 10.3390/bioengineering8080112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND AIMS Globally, liver diseases account for 2 million deaths per year. For those with advanced liver disease the only curative approach is liver transplantation. However, less than 10% of those in need get a liver transplant due to limited organ availability. To circumvent this challenge, there has been a great focus in generating a bioengineered liver. Despite its essential role in liver functions, a functional biliary system has not yet been developed. In this framework, exploration of epithelial cell self-organogenesis and microengineering-driven geometrical cell confinement allow to envision the bioengineering of a functional biomimetic intrahepatic biliary tract. APPROACH three-dimensional (3D) bile ducts were built in vitro by restricting cell adhesion to two-dimensional (2D) patterns to guide cell self-organization. Tree shapes mimicking the configuration of the human biliary system were micropatterned on glass slides, restricting cell attachment to these areas. Different tree geometries and culture conditions were explored to stimulate self-organogenesis of normal rat cholangiocytes (NRCs) used as a biliary cell model, either alone or in co-culture with human umbilical endothelial cells (HUVECs). RESULTS Pre-seeding the micropatterns with HUVECs promoted luminogenesis with higher efficiency to yield functional branched biliary tubes. Lumen formation, apico-basal polarity, and preservation of the cholangiocyte phenotype were confirmed. Moreover, intact and functional biliary structures were detached from the micropatterns for further manipulation. CONCLUSION This study presents physiologically relevant 3D biliary duct networks built in vitro from 2D micropatterns. This opens opportunities for investigating bile duct organogenesis, physiopathology, and drug testing.
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Affiliation(s)
- Emilie Gontran
- Physiopathogenèse et Traitement des Maladies du Foie, Université Paris-Saclay, Inserm, F-94800 Villejuif, France; (E.G.); (C.E.K.); (L.B.)
- INSERM U-1279, Gustave Roussy, F-94805 Villejuif, France
| | - Lorena Loarca
- Physiopathogenèse et Traitement des Maladies du Foie, Université Paris-Saclay, Inserm, F-94800 Villejuif, France; (E.G.); (C.E.K.); (L.B.)
| | - Cyrille El Kassis
- Physiopathogenèse et Traitement des Maladies du Foie, Université Paris-Saclay, Inserm, F-94800 Villejuif, France; (E.G.); (C.E.K.); (L.B.)
| | - Latifa Bouzhir
- Physiopathogenèse et Traitement des Maladies du Foie, Université Paris-Saclay, Inserm, F-94800 Villejuif, France; (E.G.); (C.E.K.); (L.B.)
| | - Dmitry Ayollo
- INSERM, Institut Universitaire d’Hematologie, Université de Paris, U976 HIPI, F-75006 Paris, France; (D.A.); (E.M.-A.); (A.F.)
- AP-HP, Hôpital Saint-Louis, 1 Avenue Vellefaux, F-75010 Paris, France
- CEA, IRIG, F-38000 Grenoble, France
| | - Elsa Mazari-Arrighi
- INSERM, Institut Universitaire d’Hematologie, Université de Paris, U976 HIPI, F-75006 Paris, France; (D.A.); (E.M.-A.); (A.F.)
- AP-HP, Hôpital Saint-Louis, 1 Avenue Vellefaux, F-75010 Paris, France
- CEA, IRIG, F-38000 Grenoble, France
| | - Alexandra Fuchs
- INSERM, Institut Universitaire d’Hematologie, Université de Paris, U976 HIPI, F-75006 Paris, France; (D.A.); (E.M.-A.); (A.F.)
- AP-HP, Hôpital Saint-Louis, 1 Avenue Vellefaux, F-75010 Paris, France
- CEA, IRIG, F-38000 Grenoble, France
| | - Pascale Dupuis-Williams
- Physiopathogenèse et Traitement des Maladies du Foie, Université Paris-Saclay, Inserm, F-94800 Villejuif, France; (E.G.); (C.E.K.); (L.B.)
- ESPCI Paris, Université PSL, F-75005 Paris, France
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21
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Yun J, Kim Y, Gao C, Kim M, Lee JY, Lee CH, Bae TH, Lee SW. Copper Hexacyanoferrate Thin Film Deposition and Its Application to a New Method for Diffusion Coefficient Measurement. Nanomaterials (Basel) 2021; 11:nano11071860. [PMID: 34361245 PMCID: PMC8308250 DOI: 10.3390/nano11071860] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 12/17/2022]
Abstract
The use of Prussian blue analogues (PBA) materials in electrochemical energy storage and harvesting has gained much interest, necessitating the further clarification of their electrochemical characteristics. However, there is no well-defined technique for manufacturing PBA-based microelectrochemical devices because the PBA film deposition method has not been well studied. In this study, we developed the following deposition method for growing copper hexacyanoferrate (CuHCFe) thin film: copper thin film is immersed into a potassium hexacyanoferrate solution, following which the redox reaction induces the spontaneous deposition of CuHCFe thin film on the copper thin film. The film grown via this method showed compatibility with conventional photolithography processes, and the micropattern of the CuHCFe thin film was successfully defined by a lift-off process. A microelectrochemical device based on the CuHCFe thin film was fabricated via micropatterning, and the sodium ion diffusivity in CuHCFe was measured. The presented thin film deposition method can deposit PBAs on any surface, including insulating substrates, and it can extend the utilization of PBA thin films to various applications.
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Affiliation(s)
- Jeonghun Yun
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; (J.Y.); (Y.K.); (C.G.); (M.K.); (J.Y.L.)
| | - Yeongae Kim
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; (J.Y.); (Y.K.); (C.G.); (M.K.); (J.Y.L.)
| | - Caitian Gao
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; (J.Y.); (Y.K.); (C.G.); (M.K.); (J.Y.L.)
| | - Moobum Kim
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; (J.Y.); (Y.K.); (C.G.); (M.K.); (J.Y.L.)
| | - Jae Yoon Lee
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; (J.Y.); (Y.K.); (C.G.); (M.K.); (J.Y.L.)
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea;
| | - Chul-Ho Lee
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea;
| | - Tae-Hyun Bae
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea;
| | - Seok Woo Lee
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; (J.Y.); (Y.K.); (C.G.); (M.K.); (J.Y.L.)
- Correspondence:
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22
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Antmen E, Demirci U, Hasirci V. Micropatterned Surfaces Expose the Coupling between Actin Cytoskeleton-Lamin/Nesprin and Nuclear Deformability of Breast Cancer Cells with Different Malignancies. Adv Biol (Weinh) 2021; 5:e2000048. [PMID: 33724728 PMCID: PMC9049775 DOI: 10.1002/adbi.202000048] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 10/16/2020] [Indexed: 12/18/2022]
Abstract
Mechanotransduction proteins transfer mechanical stimuli through nucleo-cytoskeletal coupling and affect the nuclear morphology of cancer cells. However, the contribution of actin filament integrity has never been studied directly. It is hypothesized that differences in nuclear deformability of cancer cells are influenced by the integrity of actin filaments. In this study, transparent micropatterned surfaces as simple tools to screen cytoskeletal and nuclear distortions are presented. Surfaces decorated with micropillars are used to culture and image breast cancer cells and quantify their deformation using shape descriptors (circularity, area, perimeter). Using two drugs (cytochalasin D and jasplakinolide), actin filaments are disrupted. Deformation of cells on micropillars is decreased upon drug treatment as shown by increased circularity. However, the effect is much smaller on benign MCF10A than on malignant MCF7 and MDAMB231 cells. On micropatterned surfaces, molecular analysis shows that Lamin A/C and Nesprin-2 expressions decreased but, after drug treatment, increased in malignant cells but not in benign cells. These findings suggest that Lamin A/C, Nesprin-2 and actin filaments are critical in mechanotransduction of cancer cells. Consequently, transparent micropatterned surfaces can be used as image analysis platforms to provide robust, high throughput measurements of nuclear deformability of cancer cells, including the effect of cytoskeletal elements.
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Affiliation(s)
- Ezgi Antmen
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
- METU, Department of Biotechnology, Ankara, Turkey
| | - Utkan Demirci
- Department of Radiology, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - Vasif Hasirci
- BIOMATEN, Middle East Technical University (METU) Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
- METU, Department of Biological Sciences, Ankara, Turkey
- Acibadem Mehmet Ali Aydinlar University, Department of Medical Engineering, Atasehir, Istanbul, Turkey
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23
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Abstract
Dental pulp stem cells (DPSCs) are the primary stem cell source for regenerative endodontics. DPSCs need to undergo a polarization process and retain the permanent polarization status to perform the function of odontoblasts. However, the factors that control DPSC polarization and its underlying mechanism remain unknown. In this study, we established a unique nanofibrous tubular three-dimensional (3D) platform to explore DPSC polarization. The 3D platform has a "clean" background and confines one single DPSC in each microisland of the platform; therefore, it is capable of deciphering any signal that initiates or regulates DPSC polarization. Using the biomimetic platform, we identified that the nanofibrous tubular architecture is the crucial factor to initiate DPSC polarization. Dynamic morphological observation showed that the cellular process of the polarized DPSCs continuously extended and reached a plateau at 72 h. Meanwhile, Golgi apparatus, a cell polarization marker, continuously moved from a juxtanuclear region, passed the nucleus, and eventually settled down at a final position that was a few micrometers away from the nucleus. Inhibition of microfilament and microtubule polymerization demonstrated the indispensable role of cytoskeleton reorganization in modulating DPSC polarization. In addition, cell tension was involved in the regulation of DPSC polarization. The findings of this work expand the in-depth understanding of DPSC polarization, which helps design new bioinspired materials for regenerative endodontics.
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Affiliation(s)
- Bei Chang
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas 75246, United States
| | - Chi Ma
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas 75246, United States
| | - Xiaohua Liu
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas 75246, United States
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24
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Tijore A, Lee BH, Salila Vijayalal Mohan HK, Li H, Tan LP. Bioactive micropatterned platform to engineer myotube-like cells from stem cells. Biofabrication 2020; 13. [PMID: 33285529 DOI: 10.1088/1758-5090/abd157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/07/2020] [Indexed: 11/12/2022]
Abstract
Skeletal muscle has the capacity to repair and heal itself after injury. However, this self-healing ability is diminished in the event of severe injuries and myopathies. In such conditions, stem cell-based regenerative treatments can play an important part in post injury restoration. We herein report the development of a bioactive (integrin-β1 antibody immobilized) gold micropatterned platform to promote human mesenchymal stem cells (hMSCs) differentiation into the myotube-like cells. hMSCs grown on bioactive micropattern differentiated into the myotube-like cells within two weeks. Further, up-regulation of myogenic markers, multi-nucleated state with continuous actin cytoskeleton and absence of proliferation marker confirmed the formation of myotube-like cells on bioactive micropattern. Prominent expression of elongated integrin-β1 focal adhesions (ITG-β1 FAs) and development of anisotropic stress fibres in those differentiated cells elucidated their importance in stem cell myogenesis. Together these findings delineate the synergistic role of engineered cell anisotropy and ITG-β1 mediated signaling in the development of myotube-like cells from hMSCs.
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Affiliation(s)
- Ajay Tijore
- National University of Singapore, Mechanobiology Institute, Singapore, 119260, SINGAPORE
| | - Bae Hoon Lee
- Nanyang Technological University, School of Materials Science and Engineering, Singapore, Singapore, 639798, SINGAPORE
| | | | - Holden Li
- Nanyang Technological University, School of Mechanical and Aerospace Engineering, Singapore, Singapore, 639798, SINGAPORE
| | - Lay Poh Tan
- Nanyang Technological University, School of Materials Science and Engineering, Singapore, Singapore, 639798, SINGAPORE
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25
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Sunami H, Shimizu Y, Denda J, Yokota I, Kishimoto H, Igarashi Y. A 3D Microfabricated Scaffold System for Unidirectional Cell Migration. ACTA ACUST UNITED AC 2020; 4:e2000113. [PMID: 32924291 DOI: 10.1002/adbi.202000113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/02/2020] [Indexed: 11/08/2022]
Abstract
The present study demonstrates unidirectional cell migration using a novel 3D microfabricated scaffold, as revealed by the uneven sorting of cells into an area of 1 mm × 1 mm. To induce unidirectional cell migration, it is important to determine the optimal arrangement of 3D edges, and thus, the anisotropic periodic structures of micropatterns are adjusted appropriately. The cells put forth protrusions directionally along the sharp edges of these micropatterns, and migrated in the protruding direction. There are three advantages to this novel system. First, the range of applications is wide, because this system effectively induces unidirectional migration as long as 3D shapes of the scaffolds are maintained. Second, this system can contribute to the field of cell biology as a novel taxis assay. Third, this system is highly applicable to the development of medical devices. In the present report, unique 3D microfabricated scaffolds that provoked unidirectional migration of NIH3T3 cells are described. The 3D scaffolds could provoke cells to accumulate in a single target location, or could provoke a dissipated cell distribution. Because the shapes are very simple, they could be applied to the surfaces of various medical devices. Their utilization as a cell separation technology is also anticipated.
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Affiliation(s)
- Hiroshi Sunami
- Faculty of Medicine, University of the Ryukyus, Nishihara, 903-0215, Japan
| | - Yusuke Shimizu
- Faculty of Medicine, University of the Ryukyus, Nishihara, 903-0215, Japan
| | - Junko Denda
- Faculty of Medicine, University of the Ryukyus, Nishihara, 903-0215, Japan
| | - Ikuko Yokota
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
| | - Hidehiro Kishimoto
- Faculty of Medicine, University of the Ryukyus, Nishihara, 903-0215, Japan
| | - Yasuyuki Igarashi
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
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26
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Jang J, Yeom JW, Kang WK, Haq MR, Lu X, Shin D, Kim SM, In JB. Laser Pyrolysis of Imprinted Furan Pattern for the Precise Fabrication of Microsupercapacitor Electrodes. Micromachines (Basel) 2020; 11:mi11080746. [PMID: 32751742 PMCID: PMC7464924 DOI: 10.3390/mi11080746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 07/27/2020] [Accepted: 07/29/2020] [Indexed: 02/04/2023]
Abstract
The design or dimension of micro-supercapacitor electrodes is an important factor that determines their performance. In this study, a microsupercapacitor was precisely fabricated on a silicon substrate by irradiating an imprinted furan micropattern with a CO2 laser beam under ambient conditions. Since furan is a carbon-abundant polymer, electrically conductive and porous carbon structures were produced by laser-induced pyrolysis. While the pyrolysis of a furan film in a general electric furnace resulted in severe cracks and delamination, the laser pyrolysis method proposed herein yielded porous carbon films without cracks or delamination. Moreover, as the imprinting process already designated the furan area for laser pyrolysis, high-precision patterning was achieved in the subsequent laser pyrolysis step. This two-step process exploited the superior resolution of imprinting for the fabrication of a laser-pyrolyzed carbon micropattern. As a result, the technical limitations of conventional laser direct writing could be overcome. The laser-pyrolyzed carbon structure was employed for microsupercapacitor electrodes. The microsupercapacitor showed a specific capacitance of 0.92 mF/cm2 at 1 mA/cm2 with a PVA-H2SO4 gel electrolyte, and retained an up to 88% capacitance after 10,000 charging/discharging cycles.
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Affiliation(s)
- Jina Jang
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Jeong Woo Yeom
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Won Kyu Kang
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Muhammad Refatul Haq
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Xun Lu
- Department of Mechanical Engineering, Yanbian University, Yanji 133002, China;
| | - Dongjun Shin
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Seok-Min Kim
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
- Correspondence: (S.-M.K.); (J.B.I.); Tel.: +82-2-820-5877 (S.-M.K.); +82-2-820-5971 (J.B.I.)
| | - Jung Bin In
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
- Correspondence: (S.-M.K.); (J.B.I.); Tel.: +82-2-820-5877 (S.-M.K.); +82-2-820-5971 (J.B.I.)
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27
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Zhu P, Hawkins J, Linthicum WH, Wang M, Li N, Zhou N, Wen Q, Timme-Laragy A, Song X, Sun Y. Heavy Metal Exposure Leads to Rapid Changes in Cellular Biophysical Properties. ACS Biomater Sci Eng 2020; 6:1965-1976. [PMID: 33455329 DOI: 10.1021/acsbiomaterials.9b01640] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Biophysical properties of cells, such as cell mechanics, cell shape, and cell migration, are emerging hallmarks for characterizing various cell functions. Conversely, disruptions to these biophysical properties may be used as reliable indicators of disruptions to cell homeostasis, such as in the case of chemical-induced toxicity. In this study, we demonstrate that treatment of lead(II) nitrate and cadmium nitrate leads to dosage-dependent changes in a collection of biophysical properties, including cellular traction forces, focal adhesions, mechanical stiffness, cell shape, migration speed, permeability, and wound-healing efficacy in mammalian cells. As those changes appear within a few hours after the treatment with a trace amount of lead/cadmium, our results highlight the promise of using biophysical properties to screen environmental chemicals to identify potential toxicants and establish dose response curves. Our systematic and quantitative characterization of the rapid changes in cytoskeletal structure and cell functions upon heavy metal treatment may inspire new research on the mechanisms of toxicity.
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Affiliation(s)
- Peiran Zhu
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China.,Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | | | - Will Hamilton Linthicum
- Department of Physics, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, United States
| | - Menglin Wang
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China.,Department of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, Anhui Province, China
| | | | - Nanjia Zhou
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China.,Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Qi Wen
- Department of Physics, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, United States
| | | | - Xiaofei Song
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
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28
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Ma Z, Sagrillo-Fagundes L, Tran R, Parameshwar PK, Kalashnikov N, Vaillancourt C, Moraes C. Biomimetic Micropatterned Adhesive Surfaces To Mechanobiologically Regulate Placental Trophoblast Fusion. ACS Appl Mater Interfaces 2019; 11:47810-47821. [PMID: 31773938 DOI: 10.1021/acsami.9b19906] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The placental syncytiotrophoblast is a giant multinucleated cell that forms a tree-like structure and regulates transport between mother and baby during development. It is maintained throughout pregnancy by continuous fusion of trophoblast cells, and disruptions in fusion are associated with considerable adverse health effects including diseases such as preeclampsia. Developing predictive control over cell fusion in culture models is hence of critical importance in placental drug discovery and transport studies, but this can currently be only partially achieved with biochemical factors. Here, we investigate whether biophysical signals associated with budding morphogenesis during development of the placental villous tree can synergistically direct and enhance trophoblast fusion. We use micropatterning techniques to manipulate physical stresses in engineered microtissues and demonstrate that biomimetic geometries simulating budding robustly enhance fusion and alter spatial patterns of synthesis of pregnancy-related hormones. These findings indicate that biophysical signals play a previously unrecognized and significant role in regulating placental fusion and function, in synergy with established soluble signals. More broadly, our studies demonstrate that biomimetic strategies focusing on tissue mechanics can be important approaches to design, build, and test placental tissue cultures for future studies of pregnancy-related drug safety, efficacy, and discovery.
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Affiliation(s)
- Zhenwei Ma
- Department of Chemical Engineering , McGill University , Montréal , QC H3A 0C5 , Canada
| | - Lucas Sagrillo-Fagundes
- Department of Chemical Engineering , McGill University , Montréal , QC H3A 0C5 , Canada
- INRS-Centre Armand Frappier Santé Biotehnologie and Réseau Intersectoriel de Recherche en Santé de l'Université du Québec , Laval , QC H7V 1B7 , Canada
- Center for Interdisciplinary Research on Well-Being, Health, Society and Environment , Université du Québec à Montréal , Montréal , QC H3C 3P8 , Canada
| | - Raymond Tran
- Department of Chemical Engineering , McGill University , Montréal , QC H3A 0C5 , Canada
| | - Prabu Karthick Parameshwar
- Department of Biological and Biomedical Engineering , McGill University , Montréal , QC H3A 2B4 , Canada
| | - Nikita Kalashnikov
- Department of Chemical Engineering , McGill University , Montréal , QC H3A 0C5 , Canada
| | - Cathy Vaillancourt
- INRS-Centre Armand Frappier Santé Biotehnologie and Réseau Intersectoriel de Recherche en Santé de l'Université du Québec , Laval , QC H7V 1B7 , Canada
- Center for Interdisciplinary Research on Well-Being, Health, Society and Environment , Université du Québec à Montréal , Montréal , QC H3C 3P8 , Canada
| | - Christopher Moraes
- Department of Chemical Engineering , McGill University , Montréal , QC H3A 0C5 , Canada
- Department of Biological and Biomedical Engineering , McGill University , Montréal , QC H3A 2B4 , Canada
- Rosalind and Morris Goodman Cancer Research Centre , McGill University , Montréal , QC H3A 1A3 , Canada
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29
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Horvath AN, Holenstein CN, Silvan U, Snedeker JG. The Protein Mat(ters)-Revealing the Biologically Relevant Mechanical Contribution of Collagen- and Fibronectin-Coated Micropatterns. ACS Appl Mater Interfaces 2019; 11:41791-41798. [PMID: 31589401 DOI: 10.1021/acsami.9b12430] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Understanding cell-material interactions requires accurate characterization of the substrate mechanics, which are generally measured by indentation-type atomic force microscopy. To facilitate cell-substrate interaction, model extracellular matrix coatings are used although their tensile mechanical properties are generally unknown. In this study, beyond standard compressive stiffness estimation, we performed a novel tensile mechanical characterization of collagen- and fibronectin-micropatterned polyacrylamide hydrogels. We further demonstrate the impact of the protein mat on the tensile stiffness characterization of adherent cells. To our knowledge, our study is the first to uncover direction-dependent mechanical behavior of the protein coatings and to demonstrate that it affects cellular response relative to substrate mechanics.
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Affiliation(s)
- Aron N Horvath
- Biomechanics Laboratory , University Hospital Balgrist, University of Zurich , 8008 Zurich , Switzerland
- Institute for Biomechanics , ETH Zurich , 8008 Zurich , Switzerland
| | - Claude N Holenstein
- Biomechanics Laboratory , University Hospital Balgrist, University of Zurich , 8008 Zurich , Switzerland
- Institute for Biomechanics , ETH Zurich , 8008 Zurich , Switzerland
| | - Unai Silvan
- Biomechanics Laboratory , University Hospital Balgrist, University of Zurich , 8008 Zurich , Switzerland
- Institute for Biomechanics , ETH Zurich , 8008 Zurich , Switzerland
| | - Jess G Snedeker
- Biomechanics Laboratory , University Hospital Balgrist, University of Zurich , 8008 Zurich , Switzerland
- Institute for Biomechanics , ETH Zurich , 8008 Zurich , Switzerland
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30
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Li G, Li S, Zhang L, Chen S, Sun Z, Li S, Zhang L, Yang Y. Construction of Biofunctionalized Anisotropic Hydrogel Micropatterns and Their Effect on Schwann Cell Behavior in Peripheral Nerve Regeneration. ACS Appl Mater Interfaces 2019; 11:37397-37410. [PMID: 31525950 DOI: 10.1021/acsami.9b08510] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hydrogels have promising application in tissue regeneration due to their excellent physicochemical and biocompatible properties, whereas anisotropic micropatterns are been proven to directionally induce cell alignment and accelerate cell migration. However, an effect of biofunctionalized anisotropic hydrogel micropatterns on nerve regeneration has rarely been reported. In this study, the anisotropic polyacrylamide (PAM) hydrogel micropatterns with aligned ridge/groove structures were first prepared via in situ free radical polymerization and micromolding, and then biofunctionalized using YIGSR peptide for better promoting cell growth. The morphology, swelling ratio, wettability, mechanical properties, and stability of the prepared hydrogel were characterized. The successful immobilization of YIGSR peptide on the PAM hydrogel was monitored using FTIR, immunofluorescence staining, and ELISA. The effects on adhesion, directional growth, and biological function of Schwann cells were evaluated. The results displayed that the anisotropic PAM hydrogel micropatterns with inner porous structure possessed good stability, swelling, and mechanical properties. The YIGSR peptide could be well immobilized on hydrogel micropatterns with a percentage of 62.6%. The biofunctionalized anisotropic hydrogel micropatterns could effectively regulate the orientation growth of Schwann cells, and obviously up-regulate BDNF (40%) and β-actin (50%) expression compared with single hydrogel micropatterns, without negatively affecting the normal secretion of neurotropic factors by Schwann cells. To the best of our knowledge, this is the first time to study the construction and effect of biofunctionalized anisotropic hydrogel micropatterns on nerve regeneration, which may provide an experimental and theoretical basis for the design and development of artificial implants for nerve regeneration application.
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Affiliation(s)
| | - Shenjie Li
- Medical School of Nantong University , 226001 , Nantong , P.R. China
| | | | | | - Zedong Sun
- Medical School of Nantong University , 226001 , Nantong , P.R. China
| | - Siqi Li
- Medical School of Nantong University , 226001 , Nantong , P.R. China
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31
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Jang SJ, Doshi T, Nerayo J, Caprio A, Alaie S, Auge J, Min JK, Mosadegh B, Dunham S. Microneedle Patterning of 3D Nonplanar Surfaces on Implantable Medical Devices Using Soft Lithography. Micromachines (Basel) 2019; 10:mi10100705. [PMID: 31623246 PMCID: PMC6843263 DOI: 10.3390/mi10100705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/10/2019] [Accepted: 10/15/2019] [Indexed: 01/13/2023]
Abstract
Micropatterning is often used to engineer the surface properties of objects because it allows the enhancement or modification of specific functionalities without modification of the bulk material properties. Microneedle arrays have been explored in the past for drug delivery and enhancement of tissue anchoring; however, conventional methods are primarily limited to thick, planar substrates. Here, we demonstrate a method for the fabrication of microneedle arrays on thin flexible polyurethane substrates. These thin-film microneedle arrays can be used to fabricate balloons and other inflatable objects. In addition, these thin-filmed microneedles can be transferred, using thermal forming processes, to more complex 3D objects on which it would otherwise be difficult to directly pattern microneedles. This function is especially useful for medical devices, which require effective tissue anchorage but are a challenging target for micropatterning due to their 3D nonplanar shape, large size, and the complexity of the required micropatterns. Ultrathin flexible thermoplastic polyurethane microneedle arrays were fabricated from a polydimethylsiloxane (PDMS) mold. The technique was applied onto the nonplanar surface of rapidly prototyped soft robotic implantable polyurethane devices. We found that a microneedle-patterned surface can increase the anchorage of the device to a tissue by more than twofold. In summary, our soft lithographic patterning method can rapidly and inexpensively generate thin-film microneedle surfaces that can be used to produce balloons or enhance the properties of other 3D objects and devices.
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Affiliation(s)
- Sun-Joo Jang
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - Tejas Doshi
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - Jerusalem Nerayo
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - Alexandre Caprio
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - Seyedhamidreza Alaie
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - Jordyn Auge
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - James K Min
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - Bobak Mosadegh
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
| | - Simon Dunham
- Dalio Institute of Cardiovascular Imaging, NewYork-Presbyterian Hospital and Weill Cornell Medicine, New York, NY 10021, USA.
- Department of Radiology, Weill Cornell Medicine, New York, NY 10021, USA.
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32
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Park JH, Park K. Development of Micropatterns on Curved Surfaces Using Two-Step Ultrasonic Forming. Micromachines (Basel) 2019; 10:E654. [PMID: 31569412 DOI: 10.3390/mi10100654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/20/2019] [Accepted: 09/26/2019] [Indexed: 11/20/2022]
Abstract
Nanoimprint lithography (NIL) is a micro/nanoscale patterning technology on thermoplastic polymer films, and has been widely used to fabricate functional micro/nanoscale patterns. NIL was also used to develop micro/nanoscale patterns on curved surfaces by employing flexible polymer stamps or micropatterned metal molds with macroscopic curvatures. In this study, two-step ultrasonic forming was used to develop micropatterns on a curved surface out of a flat metal stamp, by connecting ultrasonic imprinting and stretching processes. Ultrasonic imprinting was used to replicate functional micropatterns on a flat polymer film, using a flat ultrasonic horn and micropatterned metal stamps with prism and dot micropatterns. An ultrasonic stretching process was then used to form a curvature on the patterned film using a curved ultrasonic horn and a soft mold insert, to avoid damage to the pre-developed micropatterns. The ultrasonic horn was designed to have three different tip radii, and the resulting forming depth and curvature formation were investigated experimentally. As a result, three different curved surfaces containing two different micropatterns were obtained. The developed curved films containing micropatterns were then evaluated optically, and showed different optical diffusion and illumination characteristics according to the film curvature and micropattern type. These results indicate that the proposed technology can extend the functionality of conventional micropatterned products by imposing appropriate curvatures.
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Abstract
Fusion of cancer cells is thought to contribute to tumor development and drug resistance. The low frequency of cell fusion events and the instability of fused cells have hindered our ability to understand the molecular mechanisms that govern cell fusion. We have demonstrated that several breast cancer cell lines can fuse into multinucleated giant cells in vitro, and the initiation and longevity of fused cells can be regulated solely by biophysical factors. Dynamically tuning the adhesive area of the patterned substrates, reducing cytoskeletal tensions pharmacologically, altering matrix stiffness, and modulating pattern curvature all supported the spontaneous fusion and stability of these multinucleated giant cells. These observations highlight that the biomechanical microenvironment of cancer cells, including the matrix rigidity and interfacial curvature, can directly modulate their fusogenicity, an unexplored mechanism through which biophysical cues regulate tumor progression.
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Affiliation(s)
- Peiran Zhu
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Ning-Hsuan Tseng
- Molecular and Cellular Biology Graduate Program, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Tianfa Xie
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Ningwei Li
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Isaac Fitts-Sprague
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Shelly R. Peyton
- Molecular and Cellular Biology Graduate Program, University of Massachusetts, Amherst, Massachusetts 01003, USA.,Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA.,Institue for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Yubing Sun
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA.,Molecular and Cellular Biology Graduate Program, University of Massachusetts, Amherst, Massachusetts 01003, USA.,Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA.,Institue for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts 01003, USA.,Corresponding Author: Correspondence should be addressed to Y. Sun ()
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34
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Jiwlawat N, Lynch EM, Napiwocki BN, Stempien A, Ashton RS, Kamp TJ, Crone WC, Suzuki M. Micropatterned substrates with physiological stiffness promote cell maturation and Pompe disease phenotype in human induced pluripotent stem cell-derived skeletal myocytes. Biotechnol Bioeng 2019; 116:2377-2392. [PMID: 31131875 DOI: 10.1002/bit.27075] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 04/19/2019] [Accepted: 05/21/2019] [Indexed: 12/23/2022]
Abstract
Recent advances in bioengineering have enabled cell culture systems that more closely mimic the native cellular environment. Here, we demonstrated that human induced pluripotent stem cell (iPSC)-derived myogenic progenitors formed highly-aligned myotubes and contracted when seeded on two-dimensional micropatterned platforms. The differentiated cells showed clear nuclear alignment and formed elongated myotubes dependent on the width of the micropatterned lanes. Topographical cues from micropatterning and physiological substrate stiffness improved the formation of well-aligned and multinucleated myotubes similar to myofibers. These aligned myotubes exhibited spontaneous contractions specifically along the long axis of the pattern. Notably, the micropatterned platforms developed bundle-like myotubes using patient-derived iPSCs with a background of Pompe disease (glycogen storage disease type II) and even enhanced the disease phenotype as shown through the specific pathology of abnormal lysosome accumulations. A highly-aligned formation of matured myotubes holds great potential in further understanding the process of human muscle development, as well as advancing in vitro pharmacological studies for skeletal muscle diseases.
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Affiliation(s)
- Nunnapas Jiwlawat
- Department of Comparative Biosciences, University of Wisconsin, Madison, Wisconsin
| | - Eileen M Lynch
- Department of Comparative Biosciences, University of Wisconsin, Madison, Wisconsin
| | - Brett N Napiwocki
- Wisconsin Institute for Discovery, University of Wisconsin, Madison, Wisconsin.,Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin
| | - Alana Stempien
- Wisconsin Institute for Discovery, University of Wisconsin, Madison, Wisconsin.,Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin
| | - Randolph S Ashton
- Wisconsin Institute for Discovery, University of Wisconsin, Madison, Wisconsin.,Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin.,The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin
| | - Timothy J Kamp
- Department of Medicine, University of Wisconsin, Madison, Wisconsin.,The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin.,Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Wendy C Crone
- Wisconsin Institute for Discovery, University of Wisconsin, Madison, Wisconsin.,Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin.,The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin.,Department of Engineering Physics, University of Wisconsin, Madison, Wisconsin
| | - Masatoshi Suzuki
- Department of Comparative Biosciences, University of Wisconsin, Madison, Wisconsin.,Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin.,The Stem Cell and Regenerative Medicine Center, University of Wisconsin, Madison, Wisconsin
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35
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Zhang F, Zhang N, Meng HX, Liu HX, Lu YQ, Liu CM, Zhang ZM, Qu KY, Huang NP. Easy Applied Gelatin-Based Hydrogel System for Long-Term Functional Cardiomyocyte Culture and Myocardium Formation. ACS Biomater Sci Eng 2019; 5:3022-3031. [PMID: 33405656 DOI: 10.1021/acsbiomaterials.9b00515] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Harnessing biomaterials for in vitro tissue construction has long been a research focus because of its powerful potentials in tissue engineering and pharmaceutical industry. Myocardium is a critical cardiac tissue with complex multiple muscular layers. Considering the specific characters of native cardiac tissues, it is necessary to design a biocompatible and biomimetic platform for cardiomyocyte culture and myocardium formation with sustained physiological function. In this study, we developed gelatin-based hydrogels chemically cross-linked by genipin, a biocompatible cross-linker, as cell culture scaffolds. Moreover, to achieve and maintain the functionality of myocardium, for instance, well-organized cardiomyocytes and synchronized contractile behavior, we fabricated gelatin-based hydrogels with patterned microstructure using a microcontact printing technique. Furthermore, graphene oxide (GO), with unprecedented physical and chemical properties, has also been incorporated into gelatin for culturing cardiomyocytes. Our results show that micropatterned genipin-cross-linked gelatin hydrogels are very helpful to promote alignment and maturation of neonatal rat ventricular cardiomyocytes. More interestingly, the presence of GO significantly enhances the functional performance of cardiomyocytes, including an increase in contraction amplitude and cardiac gene expression. The cultured cardiomyocytes reach a well-synchronized contraction within 48 h of cell seeding and keep beating for up to 3 months. Our study provides a new and easy-to-use gelatin-based scaffold for improving physiological function of engineered cardiac tissues, exhibiting promising applications in cardiac tissue engineering and drug screening.
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Affiliation(s)
- Feng Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Ning Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Hong-Xu Meng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Hai-Xia Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Ying-Qi Lu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Chao-Ming Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Zhao-Ming Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Kai-Yun Qu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
| | - Ning-Ping Huang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2#, Nanjing 210096, P.R.China
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36
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Abstract
Understanding cell-material interactions is a prerequisite for the development of bio-inspired materials for tissue regeneration. While nanofibrous biomaterials have been widely used in tissue regeneration, the effects of nanofibrous architecture on stem cell behaviors are largely ambiguous because the previous biomaterial systems used for nanofiber-cell interactions could not exclude the interference of cell-cell interactions. In this study, we developed a unique micropatterning technology to confine one single stem cell in a microisland of the nanofibrous micropatterned matrix; therefore, eliminating any potential intercellular communications. The nanofibrous micropatterned matrix, which mimicked both the physical architecture and chemical composition of natural extracellular matrix, was fabricated by a combination of electrospinning, chemical crosslinking, and UV-initiated photolithography. Compared to the non-nanofibrous architecture, a bone marrow mesenchymal stem cell (BMSC) cultured on the nanofibrous microisland exhibited a more in vivo-like morphology, a smaller spreading area, less focal adhesion, and fewer stress fibers. The BMSC cultured on the nanofibrous microisland also had higher alkaline phosphatase activity, indicating nanofibrous architecture promoted BMSC differentiation. A mechanistic study reveals that nanofibers regulate single BMSC osteogenesis via the FAK/RhoA/YAP1 pathway. The nanofibrous micropatterned matrix developed in this study is an excellent platform to promote the fundamental understanding of cell-matrix interactions, ultimately provide valuable insights for the development of novel bio-inspired scaffolds for tissue regeneration.
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Affiliation(s)
- Bei Chang
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas 75246, United States
| | - Chi Ma
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas 75246, United States
| | - Xiaohua Liu
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas 75246, United States
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37
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Guo J, Ling S, Li W, Chen Y, Li C, Omenetto FG, Kaplan DL. Coding cell micropatterns through peptide inkjet printing for arbitrary biomineralized architectures. Adv Funct Mater 2018; 28:1800228. [PMID: 32440260 PMCID: PMC7241601 DOI: 10.1002/adfm.201800228] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Indexed: 05/20/2023]
Abstract
Well-designed micropatterns present in native tissues and organs involve changes in extracellular matrix compositions, cell types and mechanical properties to reflect complex biological functions. However, the design and fabrication of these micropatterns in vitro to meet task-specific biomedical applications remains a challenge. A de novo design strategy to code and synthesize functional micropatterns is presented to engineer cell alignment through the integration of aqueous-peptide inkjet printing and site-specific biomineralization. The inkjet printing provides direct writing of macroscopic biosilica selective peptide-R5 patterns with micrometer-scale resolution on the surface of a biopolymer (silk) hydrogel. This is combined with in situ biomineralization of the R5 peptide for site-specific growth of silica nanoparticles on the micropatterns, avoiding the use of harsh chemicals or complex processing. The functional micropatterned systems are used to align human mesenchymal stem cells and bovine serum albumin. This combination of peptide printing and site-specific biomineralization provides a new route for developing cost-effective micropatterns, with implications for broader materials designs. Coding cell micropatterns through peptide inkjet printing for arbitrary biomineralized architectures is demonstrated here. The functional micropatterned systems are used to align human mesenchymal stem cells and bovine serum albumin in vitro, avoiding the use of harsh chemicals or complex processing, while providing potential applications in developing cost-effective micropatterns to meet task-specific biomedical applications.
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Affiliation(s)
- Jin Guo
- Department of Biomedical Engineering, Tufts University, MA 02155, USA
| | - Shengjie Ling
- Department of Biomedical Engineering, Tufts University, MA 02155, USA
| | - Wenyi Li
- Department of Biomedical Engineering, Tufts University, MA 02155, USA
| | - Ying Chen
- Department of Biomedical Engineering, Tufts University, MA 02155, USA
| | - Chunmei Li
- Department of Biomedical Engineering, Tufts University, MA 02155, USA
| | | | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, MA 02155, USA
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38
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Ma C, Qu T, Chang B, Jing Y, Feng JQ, Liu X. 3D Maskless Micropatterning for Regeneration of Highly Organized Tubular Tissues. Adv Healthc Mater 2018; 7:10.1002/adhm.201700738. [PMID: 29121452 PMCID: PMC5803393 DOI: 10.1002/adhm.201700738] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/04/2017] [Indexed: 12/20/2022]
Abstract
Micropatterning is a widely used powerful tool to create highly ordered microstructures on material surfaces. However, due to technical limitations, the integration of micropatterned microstructures into bioinspired 3D scaffolds to successfully regenerate well-organized functional tissues is not achieved. In this work, a unique maskless micropatterning technology is reported to create 3D nanofibrous matrices with highly organized tubular architecture for tissue regeneration. This micropatterning method is a laser-guided, noncontact, high-precision, flexible computer programming of machining process that can create highly ordered tubules with the density ranged from 1000 to 60 000 mm-2 and the size varied from 300 nm to 30 µm in the bioinspired 3D matrix. The tubular architecture presents pivotal biophysical cues to control dental pulp stem cell alignment, migration, polarization, and differentiation. More importantly, when using this 3D tubular hierarchical matrix as a scaffold, this study successfully regenerates functional tubular dentin that has the same well-organized microstructure as its natural counterpart. This 3D maskless micropattern approach represents a powerful avenue not only for the exploration of cell-material interactions in 3D, but also for the regeneration of functional tissues with well-organized microstructures.
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Affiliation(s)
- Chi Ma
- Texas A&M University College of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Tiejun Qu
- Texas A&M University College of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Bei Chang
- Texas A&M University College of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Yan Jing
- Texas A&M University College of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Jerry Q Feng
- Texas A&M University College of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
| | - Xiaohua Liu
- Texas A&M University College of Dentistry, 3302 Gaston Ave, Dallas, TX, 75246, USA
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39
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López-Doménech G, Covill-Cooke C, Ivankovic D, Halff EF, Sheehan DF, Norkett R, Birsa N, Kittler JT. Miro proteins coordinate microtubule- and actin-dependent mitochondrial transport and distribution. EMBO J 2018; 37:321-336. [PMID: 29311115 PMCID: PMC5793800 DOI: 10.15252/embj.201696380] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 11/24/2017] [Accepted: 12/04/2017] [Indexed: 11/28/2022] Open
Abstract
In the current model of mitochondrial trafficking, Miro1 and Miro2 Rho-GTPases regulate mitochondrial transport along microtubules by linking mitochondria to kinesin and dynein motors. By generating Miro1/2 double-knockout mouse embryos and single- and double-knockout embryonic fibroblasts, we demonstrate the essential and non-redundant roles of Miro proteins for embryonic development and subcellular mitochondrial distribution. Unexpectedly, the TRAK1 and TRAK2 motor protein adaptors can still localise to the outer mitochondrial membrane to drive anterograde mitochondrial motility in Miro1/2 double-knockout cells. In contrast, we show that TRAK2-mediated retrograde mitochondrial transport is Miro1-dependent. Interestingly, we find that Miro is critical for recruiting and stabilising the mitochondrial myosin Myo19 on the mitochondria for coupling mitochondria to the actin cytoskeleton. Moreover, Miro depletion during PINK1/Parkin-dependent mitophagy can also drive a loss of mitochondrial Myo19 upon mitochondrial damage. Finally, aberrant positioning of mitochondria in Miro1/2 double-knockout cells leads to disruption of correct mitochondrial segregation during mitosis. Thus, Miro proteins can fine-tune actin- and tubulin-dependent mitochondrial motility and positioning, to regulate key cellular functions such as cell proliferation.
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Affiliation(s)
| | - Christian Covill-Cooke
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - Davor Ivankovic
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - Els F Halff
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - David F Sheehan
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - Rosalind Norkett
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - Nicol Birsa
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - Josef T Kittler
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
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40
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Li CW, Davis B, Shea J, Sant H, Gale BK, Agarwal J. Optimization of micropatterned poly(lactic-co-glycolic acid) films for enhancing dorsal root ganglion cell orientation and extension. Neural Regen Res 2018; 13:105-111. [PMID: 29451214 PMCID: PMC5840975 DOI: 10.4103/1673-5374.224377] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Nerve conduits have been a viable alternative to the 'gold standard' autograft for treating small peripheral nerve gap injuries. However, they often produce inadequate functional recovery outcomes and are ineffective in large gap injuries. Ridge/groove surface micropatterning has been shown to promote neural cell orientation and guide growth. However, optimization of the ratio of ridge/groove parameters to promote orientation and extension for dorsal root ganglion (DRG) cells on poly(lactic-co-glycolic acid) (PLGA) films has not been previously conducted. Photolithography and micro-molding were used to define various combinations of ridge/groove dimensions on PLGA films. The DRG cells obtained from chicken embryos were cultured on micropatterned PLGA films for cell orientation and migration evaluation. Biodegradation of the films occurred during the test period, however, this did not cause deformation or distortion of the micropatterns. Results from the DRG cell orientation test suggest that when the ridge/groove ratio equals 1 (ridge/groove width parameters are equal, i.e., 10 μm/10 μm (even)), the degree of alignment depends on the size of the ridges and grooves, when the ratio is smaller than 1 (groove controlled) the alignment increases as the ridge size decreases, and when the ratio is larger than 1 (ridge controlled), the alignment is reduced as the width of the grooves decreases. The migration rate and neurite extension of DRG neurons were greatest on 10 μm/10 μm and 30 μm/30 μm micropatterned PLGA films. Based on the data, the 10 μm/10 μm and 30 μm/30 μm micropatterned PLGA films are the optimized ridge/groove surface patterns for the construction of nerve repair devices.
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Affiliation(s)
- Ching-Wen Li
- Department of Mechanical Engineering, National Chung Hsing University, Taichung, Taiwan, China
| | - Brett Davis
- Department of Surgery, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Jill Shea
- Department of Surgery, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Himanshu Sant
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, USA
| | - Bruce Kent Gale
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, USA
| | - Jayant Agarwal
- Department of Surgery, School of Medicine, University of Utah, Salt Lake City, UT, USA
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41
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Liu D, Xiang T, Gong T, Tian T, Liu X, Zhou S. Bioinspired 3D Multilayered Shape Memory Scaffold with a Hierarchically Changeable Micropatterned Surface for Efficient Vascularization. ACS Appl Mater Interfaces 2017; 9:19725-19735. [PMID: 28540725 DOI: 10.1021/acsami.7b05933] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
How to achieve three-dimensional (3D) cell alignment and subsequent prompt tissue regeneration remains a great challenge. Here, inspired by the interior 3D architecture of native arteries, we develop a new 3D multilayered shape memory vascular scaffold with a hierarchically changeable micropatterned surface for vascularization. The shape memory function renders the implantation of the scaffold safe and convenient via minimally invasive surgery. By co-culturing endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) on the 3D multilayered structure, the inner monolayer, which has a square micropatterned surface, can promote EC adhesion and migration, resulting in a rapid endothelialization, and the outer multilayers, which have rectangular micropatterned surfaces, can induce a circumferential alignment of VSMCs. After implantation in the cervical artery of a New Zealand rabbit for 120 days, the graft developed a high capacity for modulating cellular 3D alignment, to generate a neonatal functional blood vessel with an endothelium layer in the inner layer and multilevel VSMC circumferential alignments in the outer layers.
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Affiliation(s)
- Dian Liu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, China
| | - Tao Xiang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, China
| | - Tao Gong
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, China
| | - Tian Tian
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, China
| | - Xian Liu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, China
| | - Shaobing Zhou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, China
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42
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Jiang L, Qian H, Chen G, Li C, Yan G, Luo Y, Liu P, Chen Y. Fabrication of micropatterns on polypropylene films via plasma pretreatment combined with UV-initiated graft polymerization. J Biomater Appl 2017; 31:1346-1357. [PMID: 28517976 DOI: 10.1177/0885328217707100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this study, micropatterns on polypropylene films were fabricated via plasma pretreatment and UV-initiated graft polymerization. Firstly, radio-frequency plasma, which does not significantly influence bulk attributes of substrates due to limited penetration depth, was utilized to activate polypropylene films. Then, different sizes of micropatterns of poly(hydroxyethyl methacrylate) (PHEMA) were fabricated on the polypropylene films via UV-initiated graft polymerization of hydroxyethyl methacrylate by using photo-masks. Scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle (CA) were employed to characterize changes of pristine polypropylene films and modified ones in surface morphology, roughness, hydrophilicity, free energy and the surface chemical composition. All of these confirmed the successful grafting of different sizes of PHEMA micropatterns on the polypropylene surface. Furthermore, the influence of PHEMA micropatterns on cell proliferation and cytotoxicity was evaluated in vitro. Analysis of cell behaviour indicated that PHEMA micropatterns of the appropriate size can promote cellular adhesion and proliferation, and the PHEMA-micropatterned polypropylene films had good biocompatibility. The approach presented here provides an alternative to synthesize on the surface of polypropylene films' micropatterns with the aim of using them in a diverse array of applications.
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Affiliation(s)
- Liu Jiang
- 1 Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Huaming Qian
- 1 Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Gang Chen
- 2 School of Foreign Languages, Shaanxi Normal University, Xi'an, China
| | - Chunyan Li
- 1 Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Guangjun Yan
- 1 Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Yanling Luo
- 1 Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Peng Liu
- 3 Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China
| | - Yashao Chen
- 1 Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
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43
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Kim D, Kim J, Ko Y, Shim K, Kim JH, You J. A Facile Approach for Constructing Conductive Polymer Patterns for Application in Electrochromic Devices and Flexible Microelectrodes. ACS Appl Mater Interfaces 2016; 8:33175-33182. [PMID: 27934196 DOI: 10.1021/acsami.6b10103] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We developed a novel strategy for fabricating poly(3,4-ethylenedioxythiophene) (PEDOT) patterns on various substrates, including hydrogels, via sequential solution procedure without multistep chemical etching or lift-off processes. First, PEDOT nanothin films were prepared on a glass substrate by solution phase monomer casting and oxidative polymerization. As a second step, after UV-induced poly(ethylene glycol) (PEG) photolithography at the PEDOT/PEG interface through a photomask, the hydrogel was peeled away from the PEDOT-coated glass substrate to detach the UV-exposed PEDOT region, which left the UV nonexposed PEDOT region intact on the glass substrate, resulting in PEDOT patterns. In a final step, the PEDOT patterns were cleanly transferred from the glass to a flexible hydrogel substrate by a direct-transfer process based on a second round of gelation process. Using this strategy, PEDOT patterns on ITO glass or ITO film were used to successfully fabricate an electrochromic (EC) device that exhibited stable electrochromic switching as a function of applied potential. Furthermore, PEDOT patterns on hydrogel were used to fabricate all organic, flexible microelectrodes with good electrical properties and excellent mechanical flexibility. Importantly, the conductivity of PEDOT patterns on hydrogel (ca. 235 S cm-1) described here is significantly higher than that previously reported (ca. 20-70 S cm-1). This approach can be easily integrated into various technological fabrication steps for the development of next-generation bioelectronics systems.
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Affiliation(s)
- Dabum Kim
- Department of Plant & Environmental New Resources, Kyung Hee University , 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, South Korea
| | - Jeonghun Kim
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong , North Wollongong, NSW 2500, Australia
| | - Youngsang Ko
- Department of Plant & Environmental New Resources, Kyung Hee University , 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, South Korea
| | - Kyubin Shim
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong , North Wollongong, NSW 2500, Australia
| | - Jung Ho Kim
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong , North Wollongong, NSW 2500, Australia
| | - Jungmok You
- Department of Plant & Environmental New Resources, Kyung Hee University , 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, South Korea
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Lv T, Cheng Z, Zhang D, Zhang E, Zhao Q, Liu Y, Jiang L. Superhydrophobic Surface With Shape Memory Micro/Nanostructure and Its Application in Rewritable Chip for Droplet Storage. ACS Nano 2016; 10:9379-9386. [PMID: 27654220 DOI: 10.1021/acsnano.6b04257] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Recently, superhydrophobic surfaces with tunable wettability have aroused much attention. Noticeably, almost all present smart performances rely on the variation of surface chemistry on static micro/nanostructure, to obtain a surface with dynamically tunable micro/nanostructure, especially that can memorize and keep different micro/nanostructures and related wettabilities, is still a challenge. Herein, by creating micro/nanostructured arrays on shape memory polymer, a superhydrophobic surface that has shape memory ability in changing and recovering its hierarchical structures and related wettabilities was reported. Meanwhile, the surface was successfully used in the rewritable functional chip for droplet storage by designing microstructure-dependent patterns, which breaks through current research that structure patterns cannot be reprogrammed. This article advances a superhydrophobic surface with shape memory hierarchical structure and the application in rewritable functional chip, which could start some fresh ideas for the development of smart superhydrophobic surface.
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Affiliation(s)
| | | | | | | | | | | | - Lei Jiang
- Institute of Chemistry, Chinese Academy of Sciences , Beijing 100080, PR China
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Yang L, Han L, Jia L. A Novel Platelet-Repellent Polyphenolic Surface and Its Micropattern for Platelet Adhesion Detection. ACS Appl Mater Interfaces 2016; 8:26570-26577. [PMID: 27652806 DOI: 10.1021/acsami.6b08930] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Surface patterning provides a powerful tool to the diagnosis of platelet adhesion. However, the current methodologies of constructing platelet-patterned surfaces require laborious and complicated steps. Herein, a novel and simple platelet-repellent surface was reported by metal (Fe3+ ions)-polyphenol (tannic acid, TA) coordination interaction. The platelet-repellent effect was significantly better than that of poly(ethylene glycol) (PEG) in a long-term. Moreover, the platelet-repellent behavior could extend to other polyphenols-functionalized surfaces. On the basis of these observations, a TA-based micropattern was fabricated in situ by one-step microcontact printing for well-defined platelet adhesion, which can effectively avoid the traditional introduction of inert hydrophilic polymers and bioactive ligands. Afterward, the TA-based micropattern was applied to monitor the adhesion of defective platelets treated with an antiplatelet drug (tirofiban). This work provided a facile, versatile, and environmentally friendly strategy to construct platelet-repellent polyphenolic surfaces and their micropattern. We expect that this simple micropattern could act as a low-cost and label-free platform for biomaterials and biosensors, and could be widely used in the clinical diagnoses of platelet adhesive functions and the evaluation of antiplatelet therapies.
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Affiliation(s)
- Liwei Yang
- School of Life Science and Biotechnology, Dalian University of Technology , Dalian 116023, P. R. China
| | - Lulu Han
- School of Life Science and Biotechnology, Dalian University of Technology , Dalian 116023, P. R. China
| | - Lingyun Jia
- School of Life Science and Biotechnology, Dalian University of Technology , Dalian 116023, P. R. China
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Gao M, Li L, Li W, Zhou H, Song Y. Direct Writing of Patterned, Lead-Free Nanowire Aligned Flexible Piezoelectric Device. Adv Sci (Weinh) 2016; 3:1600120. [PMID: 27840806 PMCID: PMC5089621 DOI: 10.1002/advs.201600120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 04/23/2016] [Indexed: 05/29/2023]
Abstract
A high-performance flexible piezoelectric nanogenerator (PNG) is fabricated by a direct writing method, which acquires both patterned piezoelectric structure and aligned piezoelectric nanowires simultaneously. The voltage output of the as-prepared PNG is nearly 400% compared with that of the traditional spin-coated device due to the effective utilization of stress. This facile printing approach provides an efficient strategy for significant improvement of the piezoresponse.
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Affiliation(s)
- Meng Gao
- Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China; School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Lihong Li
- Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Wenbo Li
- Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China; School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Haihua Zhou
- Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
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Lee GH, Sim JY, Kim SH. Polymeric Inverse Glasses for Development of Noniridescent Structural Colors in Full Visible Range. ACS Appl Mater Interfaces 2016; 8:12473-12480. [PMID: 27124719 DOI: 10.1021/acsami.6b03217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Amorphous colloidal array with short-range order displays noniridescent structural colors due to the isotropic nature of the colloidal arrangement. The low angle dependence renders the colloidal glasses, which is promising for various coloration applications. Nevertheless, the colloidal glasses are difficult to develop red structural color due to strong cavity-like resonance from individual particles in the blue region. To suppress the cavity mode and develop the colors in the full visible range, we prepare inverse glasses composed of amorphous array of air cavities with short-range order. To produce the structures in a simple and reproducible manner, monodisperse silica particles are dispersed in a photocurable resin of poly(ethylene glycol) dimethacrylate (PEGDMA) at a volume fraction of 0.3. The particles spontaneously form the amorphous array with short-range order, which is rapidly captured in polymeric films by photopolymerization of the resin. Selective removal of silica particles from the polymerized resin leaves behind amorphous array of air cavities. The inverse glasses display structural colors with negligible backscattering in blue due to short optical path and low index in each cavity. Therefore, the colors can be tuned in full visible range by simply controlling the cavity size. The photocurable suspensions of silica particles can be patterned by photolithography, which enables the production of freestanding films containing patterned inverse glasses with noniridescent structural colors.
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Affiliation(s)
- Gun Ho Lee
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
| | - Jae Young Sim
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
| | - Shin-Hyun Kim
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
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Poosala P, Ichinose H, Kitaoka T. Spatial Geometries of Self-Assembled Chitohexaose Monolayers Regulate Myoblast Fusion. Int J Mol Sci 2016; 17:ijms17050686. [PMID: 27164094 PMCID: PMC4881512 DOI: 10.3390/ijms17050686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 04/28/2016] [Accepted: 05/03/2016] [Indexed: 01/31/2023] Open
Abstract
Myoblast fusion into functionally-distinct myotubes to form in vitro skeletal muscle constructs under differentiation serum-free conditions still remains a challenge. Herein, we report that our microtopographical carbohydrate substrates composed of bioactive hexa-N-acetyl-d-glucosamine (GlcNAc6) modulated the efficiency of myoblast fusion without requiring horse serum or any differentiation medium during cell culture. Promotion of the differentiation of dissociated mononucleated skeletal myoblasts (C2C12; a mouse myoblast cell line) into robust myotubes was found only on GlcNAc6 micropatterns, whereas the myoblasts on control, non-patterned GlcNAc6 substrates or GlcNAc6-free patterns exhibited an undifferentiated form. We also examined the possible role of GlcNAc6 micropatterns with various widths in the behavior of C2C12 cells in early and late stages of myogenesis through mRNA expression of myosin heavy chain (MyHC) isoforms. The spontaneous contraction of myotubes was investigated via the regulation of glucose transporter type 4 (GLUT4), which is involved in stimulating glucose uptake during cellular contraction. Narrow patterns demonstrated enhanced glucose uptake rate and generated a fast-twitch muscle fiber type, whereas the slow-twitch muscle fiber type was dominant on wider patterns. Our findings indicated that GlcNAc6-mediated integrin interactions are responsible for guiding myoblast fusion forward along with myotube formation.
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Affiliation(s)
- Pornthida Poosala
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Hirofumi Ichinose
- Faculty of Agriculture, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Takuya Kitaoka
- Faculty of Agriculture, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
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Lee HJ, Park K. Development of Hybrid Surfaces with Tunable Wettability by Selective Surface Modifications. Materials (Basel) 2016; 9:ma9030136. [PMID: 28773262 PMCID: PMC5456690 DOI: 10.3390/ma9030136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 02/19/2016] [Accepted: 02/22/2016] [Indexed: 11/24/2022]
Abstract
Recent advances in micro/nano technology have driven artificial modifications of surface wettability by mimicking biological surfaces, such as superhydrophobic and water-harvesting surfaces. In this study, surface wettability of polycarbonate (PC) films was modified using various surface treatments: micropatterning using ultrasonic imprint lithography, fluorinate silane coating, and electron beam irradiation. To modify surface wettability selectively in a specified region, these three treatments were performed using profiled masks with the corresponding shapes. Various combinations of these treatments were investigated in terms of wettability changes, by measuring contact angle (CA). The semi-hydrophobic PC film (CA: 89.2°) was modified to create a super- hydrophobic state (CA: 155.9°) by virtue of the selective micropatterning and coating. The electron beam irradiation had an opposite effect, reducing the CA (48.2°), so that the irradiated region was modified to create a hydrophilic state. Two combinations of the proposed surface modifications made it possible to have a great difference in CA on a single surface (107.7°), and to have four different wetting states on a single surface. Various water-drop experiments proved that the developed hybrid surfaces were selectively wettable and showed water-collecting capability.
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Affiliation(s)
- Hyun-Joong Lee
- Graduate School of Mechanical Design and Robot Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea.
| | - Keun Park
- Department of Mechanical System Design Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea.
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Poosala P, Kitaoka T. Chitooligomer-Immobilized Biointerfaces with Micropatterned Geometries for Unidirectional Alignment of Myoblast Cells. Biomolecules 2016; 6:12. [PMID: 26784249 DOI: 10.3390/biom6010012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 01/08/2016] [Accepted: 01/12/2016] [Indexed: 11/16/2022] Open
Abstract
Skeletal muscle possesses a robust capacity to regenerate functional architectures with a unidirectional orientation. In this study, we successfully arranged skeletal myoblast (C2C12) cells along micropatterned gold strips on which chitohexaose was deposited via a vectorial chain immobilization approach. Hexa-N-acetyl-d-glucosamine (GlcNAc6) was site-selectively modified at its reducing end with thiosemicarbazide, then immobilized on a gold substrate in striped micropatterns via S–Au chemisorption. Gold micropatterns ranged from 100 to 1000 µm in width. Effects of patterning geometries on C2C12 cell alignment, morphology, and gene expression were investigated. Unidirectional alignment of C2C12 cells having GlcNAc6 receptors was clearly observed along the micropatterns. Decreasing striped pattern width increased cell attachment and proliferation, suggesting that the fixed GlcNAc6 and micropatterns impacted cell function. Possibly, interactions between nonreducing end groups of fixed GlcNAc6 and cell surface receptors initiated cellular alignment. Our technique for mimicking native tissue organization should advance applications in tissue engineering.
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