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Xu B, Santos SAA, Hinton BT. Protein tyrosine kinase 7 regulates extracellular matrix integrity and mesenchymal intracellular RAC1 and myosin II activities during Wolffian duct morphogenesis. Dev Biol 2018; 438:33-43. [PMID: 29580943 DOI: 10.1016/j.ydbio.2018.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/21/2018] [Accepted: 03/13/2018] [Indexed: 01/15/2023]
Abstract
Wolffian duct morphogenesis must be highly coordinated with its specialized function of providing an optimal microenvironment for sperm maturation. Without normal Wolffian duct morphogenesis, male infertility will result. Our previous study showed that mediolateral and radial intercalation of epithelial and mesenchymal cells respectively, were major drivers of ductal elongation and were regulated by protein tyrosine kinase 7 (PTK7), a member of the planar cell polarity (PCP) non-canonical Wnt pathway. To understand the mechanism by which PTK7 regulates cell rearrangement/intercalation, we investigated the integrity of the extracellular matrix (ECM) and the activity of intracellular cytoskeleton mediators following loss of Ptk7. Abnormal assembly of nephronectin, laminin, and collagen IV at the basement membrane and fibrosis-like deposition of fibrilla collagen in the interstitium were observed in Ptk7 knockout Wolffian ducts. Further, the activity levels of RAC1 and myosin II, two cytoskeleton mediators, decreased in the Ptk7 knockout mesenchyme compared to controls. In addition, in-vitro experiments suggested that alterations of ECM and cytoskeleton mediators resulted in changes in Wolffian duct morphogenesis. When in-vitro-cultured Wolffian ducts were treated with collagenase IV, the degree of cross-linked fibrilla collagen was reduced, Wolffian duct elongation and coiling were significantly reduced, and an expanded cyst-like duct was observed. When Wolffian ducts were treated with RAC1 inhibitor NSC23766, mesenchymal fibrilla collagen was disassembled, and Wolffian duct elongation was significantly reduced. Our findings provide evidence that PTK7 regulates ECM integrity and the activity levels of RAC1 and myosin II, which in turn regulates Wolffian duct morphogenesis and therefore, epididymal function.
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Affiliation(s)
- Bingfang Xu
- Department of Cell Biology, University of Virginia Health System, PO Box 800732, Charlottesville, VA 22908, USA
| | - Sérgio A A Santos
- Institute of Biosciences, São Paulo State University (UNESP), Botucatu, Brazil
| | - Barry T Hinton
- Department of Cell Biology, University of Virginia Health System, PO Box 800732, Charlottesville, VA 22908, USA.
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2
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Buzgo M, Filova E, Staffa AM, Rampichova M, Doupnik M, Vocetkova K, Lukasova V, Kolcun R, Lukas D, Necas A, Amler E. Needleless emulsion electrospinning for the regulated delivery of susceptible proteins. J Tissue Eng Regen Med 2017; 12:583-597. [PMID: 28508471 DOI: 10.1002/term.2474] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 04/12/2017] [Accepted: 05/09/2017] [Indexed: 12/12/2022]
Abstract
In the present work, we developed a novel needleless emulsion electrospinning technique that improves the production rate of the core/shell production process. The nanofibres are based on poly-ε-caprolactone (PCL) as a continuous phase combined with a droplet phase based on Pluronic F-68 (PF-68). The PCL-PF-68 nanofibres show a time-regulated release of active molecules. Needleless emulsion electrospinning was used to encapsulate a diverse set of compounds to the core phase [i.e. 5-(4,6-dichlorotriazinyl) aminofluorescein -PF-68, horseradish peroxidase, Tetramethylrhodamine-dextran, insulin growth factor-I, transforming growth factor-β and basic fibroblast growth factor]. In addition, the PF-68 facilitates the preservation of the bioactivity of delivered proteins. The system's potential was highlighted by an improvement in the metabolic activity and proliferation of mesenchymal stem cells. The developed system has the potential to deliver susceptible molecules in tissue-engineering applications.
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Affiliation(s)
- Matej Buzgo
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.,Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.,University Centre of Energetically Efficient Buildings, Czech Technical University, Buštěhrad, Czech Republic
| | - Eva Filova
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.,Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Andrea Mickova Staffa
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.,Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.,University Centre of Energetically Efficient Buildings, Czech Technical University, Buštěhrad, Czech Republic
| | - Michala Rampichova
- Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.,University Centre of Energetically Efficient Buildings, Czech Technical University, Buštěhrad, Czech Republic
| | - Miroslav Doupnik
- University Centre of Energetically Efficient Buildings, Czech Technical University, Buštěhrad, Czech Republic
| | - Karolina Vocetkova
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.,Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.,University Centre of Energetically Efficient Buildings, Czech Technical University, Buštěhrad, Czech Republic
| | - Vera Lukasova
- Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.,University Centre of Energetically Efficient Buildings, Czech Technical University, Buštěhrad, Czech Republic
| | - Radka Kolcun
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.,Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - David Lukas
- Department of Nonwovens and Nanofibrous Materials, Technical University of Liberec, Liberec, Czech Republic
| | - Alois Necas
- Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Evzen Amler
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.,Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.,University Centre of Energetically Efficient Buildings, Czech Technical University, Buštěhrad, Czech Republic
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3
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Islam A, Romijn EI, Lilledahl MB, Martinez-Zubiaurre I. Non-linear optical microscopy as a novel quantitative and label-free imaging modality to improve the assessment of tissue-engineered cartilage. Osteoarthritis Cartilage 2017; 25:1729-1737. [PMID: 28668541 DOI: 10.1016/j.joca.2017.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 05/22/2017] [Accepted: 06/20/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Current systems to evaluate outcomes from tissue-engineered cartilage (TEC) are sub-optimal. The main purpose of our study was to demonstrate the use of second harmonic generation (SHG) microscopy as a novel quantitative approach to assess collagen deposition in laboratory made cartilage constructs. METHODS Scaffold-free cartilage constructs were obtained by condensation of in vitro expanded Hoffa's fat pad derived stromal cells (HFPSCs), incubated in the presence or absence of chondrogenic growth factors (GF) during a period of 21 d. Cartilage-like features in constructs were assessed by Alcian blue staining, transmission electron microscopy (TEM), SHG and two-photon excited fluorescence microscopy. A new scoring system, using second harmonic generation microscopy (SHGM) index for collagen density and distribution, was adapted to the existing "Bern score" in order to evaluate in vitro TEC. RESULTS Spheroids with GF gave a relative high Bern score value due to appropriate cell morphology, cell density, tissue-like features and proteoglycan content, whereas spheroids without GF did not. However, both TEM and SHGM revealed striking differences between the collagen framework in the spheroids and native cartilage. Spheroids required a four-fold increase in laser power to visualize the collagen matrix by SHGM compared to native cartilage. Additionally, collagen distribution, determined as the area of tissue generating SHG signal, was higher in spheroids with GF than without GF, but lower than in native cartilage. CONCLUSION SHG represents a reliable quantitative approach to assess collagen deposition in laboratory engineered cartilage, and may be applied to improve currently established scoring systems.
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Affiliation(s)
- A Islam
- Institute of Clinical Medicine, University of Tromsø, Norway.
| | - E I Romijn
- Department of Physics, Norwegian University of Science and Technology, Norway.
| | - M B Lilledahl
- Department of Physics, Norwegian University of Science and Technology, Norway.
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4
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Ng JL, Knothe LE, Whan RM, Knothe U, Tate MLK. Scale-up of nature's tissue weaving algorithms to engineer advanced functional materials. Sci Rep 2017; 7:40396. [PMID: 28074876 PMCID: PMC5225443 DOI: 10.1038/srep40396] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 12/07/2016] [Indexed: 01/13/2023] Open
Abstract
We are literally the stuff from which our tissue fabrics and their fibers are woven and spun. The arrangement of collagen, elastin and other structural proteins in space and time embodies our tissues and organs with amazing resilience and multifunctional smart properties. For example, the periosteum, a soft tissue sleeve that envelops all nonarticular bony surfaces of the body, comprises an inherently "smart" material that gives hard bones added strength under high impact loads. Yet a paucity of scalable bottom-up approaches stymies the harnessing of smart tissues' biological, mechanical and organizational detail to create advanced functional materials. Here, a novel approach is established to scale up the multidimensional fiber patterns of natural soft tissue weaves for rapid prototyping of advanced functional materials. First second harmonic generation and two-photon excitation microscopy is used to map the microscopic three-dimensional (3D) alignment, composition and distribution of the collagen and elastin fibers of periosteum, the soft tissue sheath bounding all nonarticular bone surfaces in our bodies. Then, using engineering rendering software to scale up this natural tissue fabric, as well as multidimensional weaving algorithms, macroscopic tissue prototypes are created using a computer-controlled jacquard loom. The capacity to prototype scaled up architectures of natural fabrics provides a new avenue to create advanced functional materials.
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Affiliation(s)
- Joanna L. Ng
- Graduate School of Biomedical Engineering, University of New South Wales (UNSW) Australia, Sydney, Australia
| | - Lillian E. Knothe
- Graduate School of Biomedical Engineering, University of New South Wales (UNSW) Australia, Sydney, Australia
- School of Art & Design, University of New South Wales (UNSW) Australia, Sydney, Australia
| | - Renee M. Whan
- Biomedical Imaging Facility, Mark Wainwright Analytical Centre, UNSW Australia, Sydney, Australia
| | - Ulf Knothe
- Cleveland Clinic, Cleveland, USA
- TissuTex Pty Ltd, Wentworth Falls, Australia
| | - Melissa L. Knothe Tate
- Graduate School of Biomedical Engineering, University of New South Wales (UNSW) Australia, Sydney, Australia
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5
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FILOVÁ E, JAKUBCOVÁ B, DANILOVÁ I, KUŽELOVÁ KOŠŤÁKOVÁ E, JAROŠÍKOVÁ T, CHERNYAVSKIY O, HEJDA J, HANDL M, BEZNOSKA J, NEČAS A, ROSINA J, AMLER E. Polycaprolactone Foam Functionalized With Chitosan Microparticles – a Suitable Scaffold for Cartilage Regeneration. Physiol Res 2016; 65:121-31. [DOI: 10.33549/physiolres.932998] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
For biodegradable porous scaffolds to have a potential application in cartilage regeneration, they should enable cell growth and differentiation and should have adequate mechanical properties. In this study, our aim was to prepare biocompatible scaffolds with improved biomechanical properties. To this end, we have developed foam scaffolds from poly-Ɛ-caprolactone (PCL) with incorporated chitosan microparticles. The scaffolds were prepared by a salt leaching technique from either 10 or 15 wt% PCL solutions containing 0, 10 and 20 wt% chitosan microparticles, where the same amount and size of NaCl was used as a porogen in all the cases. PCL scaffolds without and with low amounts of chitosan (0 and 10 wt% chitosan) showed higher DNA content than scaffolds with high amounts of chitosan during a 22-day experiment. 10 wt% PCL with 10 and 20 wt% chitosan showed significantly increased viscoelastic properties compared to 15 wt% PCL scaffolds with 0 and 10 wt% chitosan. Thus, 10 wt% PCL scaffolds with 0 wt% and 10 wt% chitosan are potential scaffolds for cartilage regeneration.
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Affiliation(s)
- E. FILOVÁ
- Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic
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6
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Vielreicher M, Gellner M, Rottensteiner U, Horch RE, Arkudas A, Friedrich O. Multiphoton microscopy analysis of extracellular collagen I network formation by mesenchymal stem cells. J Tissue Eng Regen Med 2015; 11:2104-2115. [PMID: 26712389 DOI: 10.1002/term.2107] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 08/31/2015] [Accepted: 10/05/2015] [Indexed: 12/19/2022]
Abstract
Collagen I is the major fibrous extracellular component of bone responsible for its ultimate tensile strength. In tissue engineering, one of the most important challenges for tissue formation is to get cells interconnected via a strong and functional extracellular matrix (ECM), mimicking as closely as possible the natural ECM geometry. Still missing in tissue engineering are: (a) a versatile, high-resolution and non-invasive approach to evaluate and quantify different aspects of ECM development within engineered biomimetic scaffolds online; and (b) deeper insights into the mechanism whereby cellular matrix production is enhanced in 3D cell-scaffold composites, putatively via enhanced focal adhesion linkage, over the 2D setting. In this study, we developed sensitive morphometric detection methods for collagen I-producing and bone-forming mesenchymal stem cells (MSCs), based on multiphoton second harmonic generation (SHG) microscopy, and used those techniques to compare collagen I production capabilities in 2D- and 3D-arranged cells. We found that stimulating cells with 1% serum in the presence of ascorbic acid is superior to other medium conditions tested, including classical osteogenic medium. In contrast to conventional 2D culture, having MSCs packed closely in a 3D environment presumably stimulates cells to produce strong and complex collagen I networks with defined network structures (visible in SHG images) and improves collagen production. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Martin Vielreicher
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich Alexander University of Erlangen-Nürnberg, Germany
| | - Monika Gellner
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich Alexander University of Erlangen-Nürnberg, Germany
| | - Ulrike Rottensteiner
- Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nürnberg, Germany
| | - Raymund E Horch
- Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nürnberg, Germany
| | - Andreas Arkudas
- Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nürnberg, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich Alexander University of Erlangen-Nürnberg, Germany
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7
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Burdikova Z, Svindrych Z, Hickey C, Wilkinson MG, Auty MAE, Samek O, Bernatova S, Krzyzanek V, Periasamy A, Sheehan JJ. Application of advanced light microscopic techniques to gain deeper insights into cheese matrix physico-chemistry. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s13594-015-0253-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Kiyomatsu H, Oshima Y, Saitou T, Miyazaki T, Hikita A, Miura H, Iimura T, Imamura T. Quantitative SHG imaging in osteoarthritis model mice, implying a diagnostic application. BIOMEDICAL OPTICS EXPRESS 2015; 6:405-20. [PMID: 25780732 PMCID: PMC4354585 DOI: 10.1364/boe.6.000405] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 12/23/2014] [Accepted: 12/29/2014] [Indexed: 05/28/2023]
Abstract
Osteoarthritis (OA) restricts the daily activities of patients and significantly decreases their quality of life. The development of non-invasive quantitative methods for properly diagnosing and evaluating the process of degeneration of articular cartilage due to OA is essential. Second harmonic generation (SHG) imaging enables the observation of collagen fibrils in live tissues or organs without staining. In the present study, we employed SHG imaging of the articular cartilage in OA model mice ex vivo. Consequently, three-dimensional SHG imaging with successive image processing and statistical analyses allowed us to successfully characterize histopathological changes in the articular cartilage consistently confirmed on histological analyses. The quantitative SHG imaging technique presented in this study constitutes a diagnostic application of this technology in the setting of OA.
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Affiliation(s)
- Hiroshi Kiyomatsu
- Department of Orthopedic Surgery, Graduate School of Medicine, Ehime University Shitukawa Toon city, Ehime, 791-0295,
Japan
- Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Artificial Joint Integrated Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
| | - Yusuke Oshima
- Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Translational Research Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Core Research for Evolutional Science and Technology, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Division of Bio-Imaging, Proteo-Science Center, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
| | - Takashi Saitou
- Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Artificial Joint Integrated Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
| | - Tsuyoshi Miyazaki
- Department of Orthopaedic Surgery, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, 35-2, Sakaecho, Itabashi-ku, Tokyo, 173-0015,
Japan
| | - Atsuhiko Hikita
- Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Core Research for Evolutional Science and Technology, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Division of Bio-Imaging, Proteo-Science Center, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
| | - Hiromasa Miura
- Department of Orthopedic Surgery, Graduate School of Medicine, Ehime University Shitukawa Toon city, Ehime, 791-0295,
Japan
- Artificial Joint Integrated Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Translational Research Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
| | - Tadahiro Iimura
- Artificial Joint Integrated Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Translational Research Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Core Research for Evolutional Science and Technology, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Division of Bio-Imaging, Proteo-Science Center, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
| | - Takeshi Imamura
- Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Artificial Joint Integrated Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Translational Research Center, Ehime University Hospital, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Core Research for Evolutional Science and Technology, Shitukawa Toon city, Ehime, 791-0295,
Japan
- Division of Bio-Imaging, Proteo-Science Center, Ehime University, Shitukawa Toon city, Ehime, 791-0295,
Japan
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9
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Thrivikraman G, Madras G, Basu B. In vitro/In vivo assessment and mechanisms of toxicity of bioceramic materials and its wear particulates. RSC Adv 2014. [DOI: 10.1039/c3ra44483j] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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10
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Djaker N, Brustlein S, Rohman G, Huot S, de la Chapelle ML, Migonney V. Characterization of a synthetic bioactive polymer by nonlinear optical microscopy. BIOMEDICAL OPTICS EXPRESS 2013; 5:149-57. [PMID: 24466483 PMCID: PMC3891327 DOI: 10.1364/boe.5.000149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/08/2013] [Accepted: 11/14/2013] [Indexed: 05/11/2023]
Abstract
Tissue Engineering is a new emerging field that offers many possibilities to produce three-dimensional and functional tissues like ligaments or scaffolds. The biocompatibility of these materials is crucial in tissue engineering, since they should be integrated in situ and should induce a good cell adhesion and proliferation. One of the most promising materials used for tissue engineering are polyesters such as Poly-ε-caprolactone (PCL), which is used in this work. In our case, the bio-integration is reached by grafting a bioactive polymer (pNaSS) on a PCL surface. Using nonlinear microscopy, PCL structure is visualized by SHG and proteins and cells by two-photon excitation autofluorescence generation. A comparative study between grafted and nongrafted polymer films is provided. We demonstrate that the polymer grafting improves the protein adsorption by a factor of 75% and increase the cell spreading onto the polymer surface. Since the spreading is directly related to cell adhesion and proliferation, we demonstrate that the pNaSS grafting promotes PCL biocompatibility.
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Affiliation(s)
- N. Djaker
- Université Paris 13, Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS (UMR 7244), 74 rue Marcel Cachin, 93017, Bobigny,
France
| | - S. Brustlein
- Institut Fresnel, MOSAIC, CNRS, Aix-Marseille Université, Ecole Centrale Marseille, Domaine Universitaire St Jérôme,
France
| | - G. Rohman
- Université Paris 13, Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS (UMR 7244), 99 avenue JB Clément, 93430, Villetaneuse,
France
| | - S. Huot
- Université Paris 13, Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS (UMR 7244), 99 avenue JB Clément, 93430, Villetaneuse,
France
| | - M. Lamy de la Chapelle
- Université Paris 13, Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS (UMR 7244), 74 rue Marcel Cachin, 93017, Bobigny,
France
| | - V. Migonney
- Université Paris 13, Sorbonne Paris Cité, Laboratoire CSPBAT, CNRS (UMR 7244), 99 avenue JB Clément, 93430, Villetaneuse,
France
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11
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Haidarliu S, Kleinfeld D, Ahissar E. Mediation of muscular control of rhinarial motility in rats by the nasal cartilaginous skeleton. Anat Rec (Hoboken) 2013; 296:1821-32. [PMID: 24249396 PMCID: PMC4157211 DOI: 10.1002/ar.22822] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 08/29/2013] [Indexed: 11/12/2022]
Abstract
The rhinarium is the rostral-most area of the snout that surrounds the nostrils, and is hairless in most mammals. In rodents, it participates in coordinated behaviors, active tactile sensing, and active olfactory sensing. In rats, the rhinarium is firmly connected to the nasal cartilages, and its motility is determined by movements of the rostral end of the nasal cartilaginous skeleton (NCS). Here, we demonstrate the nature of different cartilaginous regions that form the rhinarium and the nasofacial muscles that deform these regions during movements of the NCS. These muscles, together with the dorsal nasal cartilage that is described here, function as a rhinarial motor plant.
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Affiliation(s)
- Sebastian Haidarliu
- Department of Neurobiology, The Weizmann Institute of Science, Rehovot, Israel
| | - David Kleinfeld
- Department of Physics and Section of Neurobiology, University of California at San Diego, La Jolla, CA 92093, USA
| | - Ehud Ahissar
- Department of Neurobiology, The Weizmann Institute of Science, Rehovot, Israel
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12
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Vielreicher M, Schürmann S, Detsch R, Schmidt MA, Buttgereit A, Boccaccini A, Friedrich O. Taking a deep look: modern microscopy technologies to optimize the design and functionality of biocompatible scaffolds for tissue engineering in regenerative medicine. J R Soc Interface 2013; 10:20130263. [PMID: 23864499 DOI: 10.1098/rsif.2013.0263] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
This review focuses on modern nonlinear optical microscopy (NLOM) methods that are increasingly being used in the field of tissue engineering (TE) to image tissue non-invasively and without labelling in depths unreached by conventional microscopy techniques. With NLOM techniques, biomaterial matrices, cultured cells and their produced extracellular matrix may be visualized with high resolution. After introducing classical imaging methodologies such as µCT, MRI, optical coherence tomography, electron microscopy and conventional microscopy two-photon fluorescence (2-PF) and second harmonic generation (SHG) imaging are described in detail (principle, power, limitations) together with their most widely used TE applications. Besides our own cell encapsulation, cell printing and collagen scaffolding systems and their NLOM imaging the most current research articles will be reviewed. These cover imaging of autofluorescence and fluorescence-labelled tissue and biomaterial structures, SHG-based quantitative morphometry of collagen I and other proteins, imaging of vascularization and online monitoring techniques in TE. Finally, some insight is given into state-of-the-art three-photon-based imaging methods (e.g. coherent anti-Stokes Raman scattering, third harmonic generation). This review provides an overview of the powerful and constantly evolving field of multiphoton microscopy, which is a powerful and indispensable tool for the development of artificial tissues in regenerative medicine and which is likely to gain importance also as a means for general diagnostic medical imaging.
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Affiliation(s)
- M Vielreicher
- Department of Chemical and Biological Engineering, Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Paul-Gordan-Strasse 3, 91052 Erlangen, Germany.
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13
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Buzgo M, Jakubova R, Mickova A, Rampichova M, Prosecka E, Kochova P, Lukas D, Amler E. Time-regulated drug delivery system based on coaxially incorporated platelet α-granules for biomedical use. Nanomedicine (Lond) 2013. [DOI: 10.2217/nnm.12.140] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Aim: Platelet derivatives serve as an efficient source of natural growth factors. In the current study, α-granules were incorporated into coaxial nanofibers. Materials & methods: A nanofiber scaffold containing α-granules was prepared by coaxial electrospinning. The biological potential of the nanofiber scaffold was evaluated in chondrocyte and mesenchymal stem cell cultivation studies. Additionally, the concentration of TGF-β1 was determined. Results: Microscopy studies showed that intact α-granules were incorporated into the coaxial nanofibers. The cultivation tests showed that the novel scaffold stimulated viability and extracellular matrix production of chondrocytes and mesenchymal stem cells. In addition, the concentration of growth factors necessary for the induction of cell proliferation significantly decreased. Conclusion: The system preserved α-granule bioactivity and stimulated cell viability and chondrogenic differentiation of mesenchymal stem cells. Core/shell nanofibers incorporating α-granules are a promising system for tissue engineering, particularly cartilage engineering. Original submitted 21 March 2012; Revised submitted 8 August 2012; Published online 2 December 2012
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Affiliation(s)
- Matej Buzgo
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, V Úvalu 84, 150 06 Prague 5, Czech Republic.
| | - Radka Jakubova
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, V Úvalu 84, 150 06 Prague 5, Czech Republic
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Andrea Mickova
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, V Úvalu 84, 150 06 Prague 5, Czech Republic
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Michala Rampichova
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, V Úvalu 84, 150 06 Prague 5, Czech Republic
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Eva Prosecka
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, V Úvalu 84, 150 06 Prague 5, Czech Republic
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Petra Kochova
- Department of Mechanics, Faculty of Applied Sciences, University of West Bohemia, Univerzitni 8, 30614 Pilsen, Czech Republic
| | - David Lukas
- Department of Nonwovens, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic
| | - Evžen Amler
- Department of Biophysics, 2nd Faculty of Medicine, Charles University in Prague, V Úvalu 84, 150 06 Prague 5, Czech Republic
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, v.v.i, Vídeňská 1083, 142 20 Prague 4, Czech Republic
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Šepitka J, Lukeš J, Staněk L, Filová E, Burdíková Z, Řezníček J. Nanoindentation of intervertebral disc tissues localised by SHG imaging. Comput Methods Biomech Biomed Engin 2012; 15 Suppl 1:335-6. [DOI: 10.1080/10255842.2012.713601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Martínez H, Brackmann C, Enejder A, Gatenholm P. Mechanical stimulation of fibroblasts in micro-channeled bacterial cellulose scaffolds enhances production of oriented collagen fibers. J Biomed Mater Res A 2012; 100:948-57. [DOI: 10.1002/jbm.a.34035] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 10/27/2011] [Accepted: 11/29/2011] [Indexed: 11/08/2022]
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