1
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Zhao X, Zhang Y, Wang P, Guan J, Zhang D. Construction of multileveled and oriented micro/nano channels in Mg doped hydroxyapitite bioceramics and their effect on mimicking mechanical property of cortical bone and biological performance of cancellous bone. BIOMATERIALS ADVANCES 2024; 161:213871. [PMID: 38692181 DOI: 10.1016/j.bioadv.2024.213871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 04/13/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024]
Abstract
Drawing on the structure and components of natural bone, this study developed Mg-doped hydroxyapatite (Mg-HA) bioceramics, characterized by multileveled and oriented micro/nano channels. These channels play a critical role in ensuring both mechanical and biological properties, making bioceramics suitable for various bone defects, particularly those bearing loads. Bioceramics feature uniformly distributed nanogrooves along the microchannels. The compressive strength or fracture toughness of the Mg-HA bioceramics with micro/nano channels formed by single carbon nanotube/carbon fiber (CNT/CF) (Mg-HA(05-CNT/CF)) are comparable to those of cortical bone, attributed to a combination of strengthened compact walls and microchannels, along with a toughening mechanism involving crack pinning and deflection at nanogroove intersections. The introduction of uniform nanogrooves also enhanced the porosity by 35.4 %, while maintaining high permeability owing to the capillary action in the oriented channels. This leads to superior degradation properties, protein adsorption, and in vivo osteogenesis compared with bioceramics with only microchannels. Mg-HA(05-CNT/CF) exhibited not only high strength and toughness comparable to cortical bone, but also permeability similar to cancellous bone, enhanced cell activity, and excellent osteogenic properties. This study presents a novel approach to address the global challenge of applying HA-based bioceramics to load-bearing bone defects, potentially revolutionizing their application in tissue engineering.
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Affiliation(s)
- Xueni Zhao
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China.
| | - Yu Zhang
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Pengfei Wang
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Jinxin Guan
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, PR China
| | - Dexin Zhang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, PR China.
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2
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Gupta A, Das A, Barui A, Das A, Roy Chowdhury A. Evaluating the cell migration potential of TiO 2 nanorods incorporated in a Ti 6Al 4V scaffold: A multiscale approach. J Mech Behav Biomed Mater 2023; 144:105940. [PMID: 37300993 DOI: 10.1016/j.jmbbm.2023.105940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/19/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023]
Abstract
Improvement of cell migration by the nano-topographical modification of implant surface can directly or indirectly accelerate wound healing and osseointegration between bone and implant. Therefore, modification of the implant surface was done with TiO2 nanorod (NR) arrays to develop a more osseointegration-friendly implant in this study. Modulating the migration of a cell, adhered to a scaffold, by the variations of NR diameter, density and tip diameter in vitro is the primary objective of the study. The fluid structure interaction method was used, followed by the submodelling technique in this multiscale analysis. After completing a simulation over a global model, fluid structure interaction data was applied to the sub-scaffold finite element model to predict the mechanical response over cells at the cell-substrate interface. Special focus was given to strain energy density at the cell interface as a response parameter due to its direct correlation with the migration of an adherent cell. The results showed a huge rise in strain energy density after the addition of NRs on the scaffold surface. It also highlighted that variation in NR density plays a more effective role than the variation in NR diameter to control cell migration over a substrate. However, the effect of NR diameter becomes insignificant when the NR tip was considered. The findings of this study could be used to determine the best nanostructure parameters for better osseointegration.
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Affiliation(s)
- Abhisek Gupta
- Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | - Ankita Das
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | - Ananya Barui
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | - Apurba Das
- Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India
| | - Amit Roy Chowdhury
- Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India.
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3
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Erdogan Y, Ercan B. Anodized Nanostructured 316L Stainless Steel Enhances Osteoblast Functions and Exhibits Anti-Fouling Properties. ACS Biomater Sci Eng 2023; 9:693-704. [PMID: 36692948 PMCID: PMC9930089 DOI: 10.1021/acsbiomaterials.2c01072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Poor osseointegration and infection are among the major challenges of 316L stainless steel (SS) implants in orthopedic applications. Surface modifications to obtain a nanostructured topography seem to be a promising method to enhance cellular interactions of 316L SS implants. In this study, arrays of nanodimples (NDs) having controlled feature sizes between 25 and 250 nm were obtained on 316L SS surfaces by anodic oxidation (anodization). Results demonstrated that the fabrication of NDs increased the surface area and, at the same time, altered the surface chemistry of 316L SS to provide chromium oxide- and hydroxide-rich surface oxide layers. In vitro experiments showed that ND surfaces promoted up to a 68% higher osteoblast viability on the fifth day of culture. Immunofluorescence images confirmed a well-spread cytoskeleton organization on the ND surfaces. In addition, higher alkaline phosphate activity and calcium mineral synthesis were observed on the ND surfaces compared to non-anodized 316L SS. Furthermore, a 71% reduction in Staphylococcus aureus (S. aureus) and a 58% reduction in Pseudomonas aeruginosa (P. aeruginosa) colonies were observed on the ND surfaces having a 200 nm feature size compared to non-anodized surfaces at 24 h of culture. Cumulatively, the results showed that a ND surface topography fabricated on 316L SS via anodization upregulated the osteoblast viability and functions while preventing S. aureus and P. aeruginosa biofilm synthesis.
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Affiliation(s)
- Yasar
Kemal Erdogan
- Biomedical
Engineering Program, Middle East Technical
University, Ankara 06800, Turkey,Department
of Biomedical Engineering, Isparta University
of Applied Science, Isparta 32260, Turkey
| | - Batur Ercan
- Biomedical
Engineering Program, Middle East Technical
University, Ankara 06800, Turkey,Department
of Metallurgical and Materials Engineering, Middle East Technical University, Ankara 06800, Turkey,BIOMATEN,
METU Center of Excellence in Biomaterials and Tissue Engineering, Ankara 06800, Turkey,. Phone: +90 (312) 210-2513
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4
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Moxon SR, Richards D, Dobre O, Wong LS, Swift J, Richardson SM. Regulation of Mesenchymal Stem Cell Morphology Using Hydrogel Substrates with Tunable Topography and Photoswitchable Stiffness. Polymers (Basel) 2022; 14:polym14245338. [PMID: 36559706 PMCID: PMC9788018 DOI: 10.3390/polym14245338] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/02/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Cell function can be directly influenced by the mechanical and structural properties of the extracellular environment. In particular, cell morphology and phenotype can be regulated via the modulation of both the stiffness and surface topography of cell culture substrates. Previous studies have highlighted the ability to design cell culture substrates to optimise cell function. Many such examples, however, employ photo-crosslinkable polymers with a terminal stiffness or surface profile. This study presents a system of polyacrylamide hydrogels, where the surface topography can be tailored and the matrix stiffness can be altered in situ with photoirradiation. The process allows for the temporal regulation of the extracellular environment. Specifically, the surface topography can be tailored via reticulation parameters to include creased features with control over the periodicity, length and branching. The matrix stiffness can also be dynamically tuned via exposure to an appropriate dosage and wavelength of light, thus, allowing for the temporal regulation of the extracellular environment. When cultured on the surface of the hydrogels, the morphology and alignment of immortalised human mesenchymal stem cells can be directly influenced through the tailoring of surface creases, while cell size can be altered via changes in matrix stiffness. This system offers a new platform to study cellular mechanosensing and the influence of extracellular cues on cell phenotype and function.
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Affiliation(s)
- Samuel R. Moxon
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PL, UK
- The Henry Royce Institute, University of Manchester, Manchester M13 9PL, UK
| | - David Richards
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PL, UK
| | - Oana Dobre
- Centre for the Cellular Microenvironment, Advanced Research Centre, University of Glasgow, Glasgow G12 8LT, UK
| | - Lu Shin Wong
- Manchester Institute of Biotechnology and School of Chemistry, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
- Correspondence: (L.S.W.); (J.S.); (S.M.R.)
| | - Joe Swift
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PL, UK
- Wellcome Centre for Cell-Matrix Research, University of Manchester, Oxford Road, Manchester M13 9PT, UK
- Correspondence: (L.S.W.); (J.S.); (S.M.R.)
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PL, UK
- Correspondence: (L.S.W.); (J.S.); (S.M.R.)
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5
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Benčina M, Junkar I, Vesel A, Mozetič M, Iglič A. Nanoporous Stainless Steel Materials for Body Implants-Review of Synthesizing Procedures. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2924. [PMID: 36079962 PMCID: PMC9457931 DOI: 10.3390/nano12172924] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/18/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Despite the inadequate biocompatibility, medical-grade stainless steel materials have been used as body implants for decades. The desired biological response of surfaces to specific applications in the body is a highly challenging task, and usually not all the requirements of a biomaterial can be achieved. In recent years, nanostructured surfaces have shown intriguing results as cell selectivity can be achieved by specific surface nanofeatures. Nanoporous structures can be fabricated by anodic oxidation, which has been widely studied for titanium and its alloys, while no systematic studies are so far available for stainless steel (SS) materials. This paper reviews the current state of the art in the anodisation of SS; correlations between the parameters of anodic oxidation and the surface morphology are drawn. The results reported by various authors are scattered because of a variety of experimental configurations. A linear correlation between the pores' diameter anodisation voltage was deduced, while no correlation with other processing parameters was found obvious. The analyses of available data indicated a lack of systematic experiments, which are recommended to understand the kinetics of pore formation and develop techniques for optimal biocompatibility of stainless steel.
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Affiliation(s)
- Metka Benčina
- Department of Surface Engineering, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
- Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Ita Junkar
- Department of Surface Engineering, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
| | - Alenka Vesel
- Department of Surface Engineering, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
| | - Miran Mozetič
- Department of Surface Engineering, Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia
| | - Aleš Iglič
- Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia
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6
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Becerikli M, Kopp A, Kröger N, Bodrova M, Wallner C, Wagner JM, Dadras M, Jettkant B, Pöhl F, Lehnhardt M, Jung O, Behr B. A novel titanium implant surface modification by plasma electrolytic oxidation (PEO) preventing tendon adhesion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:112030. [PMID: 33812645 DOI: 10.1016/j.msec.2021.112030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/11/2021] [Accepted: 03/02/2021] [Indexed: 10/21/2022]
Abstract
Titanium is one of the most commonly used materials for implants in trauma applications due to its low density, high corrosion resistance and biocompatibility. Nevertheless, there is still a need for improved surface modifications of Titanium, in order to change surface properties such as wettability, antibacterial properties or tissue attachment. In this study, different novel plasma electrolytic oxidation (PEO) modifications have been investigated for tendon adhesion to implants commonly used in hand surgery. Titanium samples with four different PEO modifications were prepared by varying the electrolyte composition and analyzed with regards to their surface properties. Unmodified titanium blanks and Dotize® coating served as controls. Samples were examined using scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), contact angle measuring system and analyzed for their biocompatibility and hemocompatibility (according to DIN ISO 10993-5 and 10,993-4). Finally, tendon adhesion of these specific surfaces were investigated by pull-off tests. Our findings show that surface thickness of PEO modifications was about 12-20 μm and had porous morphology. One modification demonstrated hydrophilic behavior accompanied by good biocompatibility without showing cytotoxic properties. Furthermore, no hemolytic effect and no significant influence on hemocompatibility were observed. Pull-off tests revealed a significant reduction of tendon adhesion by 64.3% (35.7% residual adhesion), compared to unmodified titanium (100%). In summary, the novel PEO-based ceramic-like porous modification for titanium surfaces might be considered a good candidate for orthopedic applications supporting a more efficient recovery.
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Affiliation(s)
- Mustafa Becerikli
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | | | | | | | - Christoph Wallner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Johannes Maximilian Wagner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Mehran Dadras
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Birger Jettkant
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Fabian Pöhl
- Chair of Materials Technology, Ruhr-University Bochum, Bochum, Germany
| | - Marcus Lehnhardt
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, Head- and Neurocenter, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Björn Behr
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany.
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7
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Tai CS, Lan KC, Wang E, Chan FE, Hsieh MT, Huang CW, Weng SL, Chen PC, Chen WL. Nanotopography as Artificial Microenvironment for Accurate Visualization of Metastasis Development via Simulation of ECM Dynamics. NANO LETTERS 2021; 21:1400-1411. [PMID: 33522822 DOI: 10.1021/acs.nanolett.0c04209] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Metastatic progression is mediated by complex interactions between deregulated extracellular matrix (ECM) and cancer cells and remains a major challenge in cancer management. To investigate the role of ECM dynamics in promoting metastasis development, we developed an artificial microenvironment (AME) platform comprised of nanodot arrays of increasing diameter. Cells cultured on the platform showed increasing signs of mesenchymal-like cell transition as AME diameter increased, suggesting accurate simulation of ECM-mediated gene regulation. Gene expression was analyzed to determine genes significant to transition, which were then used to select appropriate small molecule drugs for time course treatments. Our results suggest that the platform can identify critical target genes as well as possible drug candidates. Overall, the AME platform allows for the study of intricate ECM-induced gene expression trends across metastasis development that would otherwise be difficult to visualize in vivo and may open new avenues toward successful personalized cancer management.
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Affiliation(s)
- Chun-San Tai
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Molecular Medicine and Bioengineering, National Chiao Tung University, Hsinchu, Taiwan
| | - Kuan-Chun Lan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Molecular Medicine and Bioengineering, National Chiao Tung University, Hsinchu, Taiwan
| | - Erick Wang
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
| | - Fu-Erh Chan
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Ming-Ting Hsieh
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Ching-Wen Huang
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Division of Thoracic Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Shun-Long Weng
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Department of Obstetrics and Gynecology, Hsinchu MacKay Memorial Hospital, Hsinchu City, Taiwan
| | - Po-Chun Chen
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan
- Institute of Material Science and Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Wen Liang Chen
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Center for Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Chiao Tung University, Hsinchu, Taiwan
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8
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Promoted migration of fibroblast cells on low aspect ratio isotropic nanopore surface by reduced maturation of focal adhesion at peripheral region. Colloids Surf B Biointerfaces 2020; 195:111229. [DOI: 10.1016/j.colsurfb.2020.111229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 01/08/2023]
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9
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Ghilardi SJ, O'Reilly BM, Sgro AE. Intracellular signaling dynamics and their role in coordinating tissue repair. WILEY INTERDISCIPLINARY REVIEWS. SYSTEMS BIOLOGY AND MEDICINE 2020; 12:e1479. [PMID: 32035001 PMCID: PMC7187325 DOI: 10.1002/wsbm.1479] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/20/2019] [Accepted: 12/31/2019] [Indexed: 12/11/2022]
Abstract
Tissue repair is a complex process that requires effective communication and coordination between cells across multiple tissues and organ systems. Two of the initial intracellular signals that encode injury signals and initiate tissue repair responses are calcium and extracellular signal-regulated kinase (ERK). However, calcium and ERK signaling control a variety of cellular behaviors important for injury repair including cellular motility, contractility, and proliferation, as well as the activity of several different transcription factors, making it challenging to relate specific injury signals to their respective repair programs. This knowledge gap ultimately hinders the development of new wound healing therapies that could take advantage of native cellular signaling programs to more effectively repair tissue damage. The objective of this review is to highlight the roles of calcium and ERK signaling dynamics as mechanisms that link specific injury signals to specific cellular repair programs during epithelial and stromal injury repair. We detail how the signaling networks controlling calcium and ERK can now also be dissected using classical signal processing techniques with the advent of new biosensors and optogenetic signal controllers. Finally, we advocate the importance of recognizing calcium and ERK dynamics as key links between injury detection and injury repair programs that both organize and execute a coordinated tissue repair response between cells across different tissues and organs. This article is categorized under: Models of Systems Properties and Processes > Mechanistic Models Biological Mechanisms > Cell Signaling Laboratory Methods and Technologies > Imaging Models of Systems Properties and Processes > Organ, Tissue, and Physiological Models.
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Affiliation(s)
- Samuel J. Ghilardi
- Department of Biomedical Engineering and the Biological Design CenterBoston UniversityBostonMassachusetts
| | - Breanna M. O'Reilly
- Department of Biomedical Engineering and the Biological Design CenterBoston UniversityBostonMassachusetts
| | - Allyson E. Sgro
- Department of Biomedical Engineering and the Biological Design CenterBoston UniversityBostonMassachusetts
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10
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Dhawan U, Wang WL, Gautam B, Aerathupalathu Janardhanan J, Hsiao PC, Tu HL, Yu HH. Mechanotactic Activation of TGF-β by PEDOT Artificial Microenvironments Triggers Epithelial to Mesenchymal Transition. ACTA ACUST UNITED AC 2020; 4:e1900165. [PMID: 32293138 DOI: 10.1002/adbi.201900165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 11/13/2019] [Indexed: 11/11/2022]
Abstract
Epithelial to mesenchymal transition (EMT) is integral for cells to acquire metastatic properties, and ample evidence links it to bioorganic framework of the tumor microenvironment (TME). Hydroxymethyl-functionalized 3,4-ethylenedioxythiophene polymer (PEDOT-OH) enables construction of diverse nanotopography size and morphologies and is therefore exploited to engineer organic artificial microenvironments bearing nanodots from 300 to 1000 nm in diameter to understand spatiotemporal EMT regulation by biophysical components of the TME. MCF-7 breast cancer cells are cultured on these artificial microenvironments, and temporal regulation of cellular morphology and EMT markers is investigated. The results show that upon physical stimulation, cells on 300 nm artificial microenvironments advance to EMT and display a decreased extracellular matrix (ECM) protein secretion. In contrast, cells on 500 nm artificial microenvironments are trapped in EMT-imbalance. Interestingly, cells on 1000 nm artificial microenvironments resemble those on control surfaces. Upon further investigation, it is found that EMT induction is triggered via transforming growth factor β (TGF-β) and ECM cleaving protein, matrix metalloproteinease-9. Immunostaining EMT proteins highlighted that EMT induction is achieved through attenuation of cell-cell and cell-microenvironment adhesions. The physical stimulation-induced TGF-β perturbation can have a profound impact on the understanding of tumor-promoting signaling cascades originated by cellular microenvironment.
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Affiliation(s)
- Udesh Dhawan
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Academia Road, Nankang, Taipei, 11529, Taiwan, ROC
| | - Wei-Li Wang
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Academia Road, Nankang, Taipei, 11529, Taiwan, ROC
| | - Bhaskarchand Gautam
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Academia Road, Nankang, Taipei, 11529, Taiwan, ROC.,Taiwan International graduate Program (TIGP), Sustainable Chemical Science and technology (SCST), Academia Sinica, Academia Road, Nankang, Taipei, 11529, Taiwan, ROC.,Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 1001 University Road, Hsinchu, Taiwan, 300, ROC
| | - Jayakrishnan Aerathupalathu Janardhanan
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Academia Road, Nankang, Taipei, 11529, Taiwan, ROC.,Taiwan International graduate Program (TIGP), Sustainable Chemical Science and technology (SCST), Academia Sinica, Academia Road, Nankang, Taipei, 11529, Taiwan, ROC.,Department of Applied Chemistry, National Chiao Tung University, Hsinchu, 1001 University Road, Hsinchu, Taiwan, 300, ROC
| | - Po-Chiang Hsiao
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
| | - Hsiung-Lin Tu
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
| | - Hsiao-Hua Yu
- Smart Organic Materials Laboratory, Institute of Chemistry, Academia Sinica, Academia Road, Nankang, Taipei, 11529, Taiwan, ROC
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11
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Pathak A. Modeling and predictions of biphasic mechanosensitive cell migration altered by cell-intrinsic properties and matrix confinement. Phys Biol 2018; 15:065001. [DOI: 10.1088/1478-3975/aabdcc] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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12
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Lim J, Choi A, Kim HW, Yoon H, Park SM, Tsai CHD, Kaneko M, Kim DS. Constrained Adherable Area of Nanotopographic Surfaces Promotes Cell Migration through the Regulation of Focal Adhesion via Focal Adhesion Kinase/Rac1 Activation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14331-14341. [PMID: 29649358 DOI: 10.1021/acsami.7b18954] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cell migration is crucial in physiological and pathological processes such as embryonic development and wound healing; such migration is strongly guided by the surrounding nanostructured extracellular matrix. Previous studies have extensively studied the cell migration on anisotropic nanotopographic surfaces; however, only a few studies have reported cell migration on isotropic nanotopographic surfaces. We herein, for the first time, propose a novel concept of adherable area on cell migration using isotropic nanopore surfaces with sufficient nanopore depth by adopting a high aspect ratio. As the pore size of the nanopore surface was controlled to 200, 300, and 400 nm in a fixed center-to-center distance of 480 nm, it produced 86, 68, and 36% of adherable area, respectively, on the fabricated surface. A meticulous investigation of the cell migration in response to changes in the constrained adherable area of the nanotopographic surface showed 1.4-, 1.5-, and 1.6-fold increase in migration speeds and a 1.4-, 2-, and 2.5-fold decrease in the number of focal adhesions as the adherable area was decreased to 86, 68, and 36%, respectively. Furthermore, a strong activation of FAK/Rac1 signaling was observed to be involved in the promoted cell migration. These results suggest that the reduced adherable area promotes cell migration through decreasing the FA formation, which in turn upregulates FAK/Rac1 activation. The findings in this study can be utilized to control the cell migration behaviors, which is a powerful tool in the research fields involving cell migration such as promoting wound healing and tissue repair.
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Affiliation(s)
- Jiwon Lim
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-gu , Pohang , Gyeongbuk 37673 , Korea
| | - Andrew Choi
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-gu , Pohang , Gyeongbuk 37673 , Korea
| | - Hyung Woo Kim
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-gu , Pohang , Gyeongbuk 37673 , Korea
| | - Hyungjun Yoon
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-gu , Pohang , Gyeongbuk 37673 , Korea
| | - Sang Min Park
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-gu , Pohang , Gyeongbuk 37673 , Korea
| | - Chia-Hung Dylan Tsai
- Department of Mechanical Engineering , Osaka University , 1-1 Yamadaoka , Suita , Osaka 565-0871 , Japan
| | - Makoto Kaneko
- Department of Mechanical Engineering , Osaka University , 1-1 Yamadaoka , Suita , Osaka 565-0871 , Japan
| | - Dong Sung Kim
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-Ro, Nam-gu , Pohang , Gyeongbuk 37673 , Korea
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13
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Dhawan U, Sue MW, Lan KC, Buddhakosai W, Huang PH, Chen YC, Chen PC, Chen WL. Nanochip-Induced Epithelial-to-Mesenchymal Transition: Impact of Physical Microenvironment on Cancer Metastasis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:11474-11485. [PMID: 29557633 DOI: 10.1021/acsami.7b19467] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Epithelial-to-mesenchymal transition (EMT) is a highly orchestrated process motivated by the nature of physical and chemical compositions of the tumor microenvironment (TME). The role of the physical framework of the TME in guiding cells toward EMT is poorly understood. To investigate this, breast cancer MDA-MB-231 and MCF-7 cells were cultured on nanochips comprising tantalum oxide nanodots ranging in diameter from 10 to 200 nm, fabricated through electrochemical approach and collectively referred to as artificial microenvironments. The 100 and 200 nm nanochips induced the cells to adopt an elongated or spindle-shaped morphology. The key EMT genes, E-cadherin, N-cadherin, and vimentin, displayed the spatial control exhibited by the artificial microenvironments. The E-cadherin gene expression was attenuated, whereas those of N-cadherin and vimentin were amplified by 100 and 200 nm nanochips, indicating the induction of EMT. Transcription factors, snail and twist, were identified for modulating the EMT genes in the cells on these artificial microenvironments. Localization of EMT proteins observed through immunostaining indicated the loss of cell-cell junctions on 100 and 200 nm nanochips, confirming the EMT induction. Thus, by utilizing an in vitro approach, we demonstrate how the physical framework of the TME may possibly trigger or assist in inducing EMT in vivo. Applications in the fields of drug discovery, biomedical engineering, and cancer research are expected.
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Affiliation(s)
| | | | | | | | | | - Yi Cheng Chen
- Department of Materials and Mineral Resources Engineering , National Taipei University of Technology , 1, Section 3, Zhongxiao E. Rd , Taipei , Taiwan 10608 , ROC
| | - Po-Chun Chen
- Department of Materials and Mineral Resources Engineering , National Taipei University of Technology , 1, Section 3, Zhongxiao E. Rd , Taipei , Taiwan 10608 , ROC
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14
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Kim MH, Kino-oka M. Bioprocessing Strategies for Pluripotent Stem Cells Based on Waddington’s Epigenetic Landscape. Trends Biotechnol 2018; 36:89-104. [DOI: 10.1016/j.tibtech.2017.10.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 10/02/2017] [Accepted: 10/10/2017] [Indexed: 12/12/2022]
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15
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Ma XY, Feng YF, Wang TS, Lei W, Li X, Zhou DP, Wen XX, Yu HL, Xiang LB, Wang L. Involvement of FAK-mediated BMP-2/Smad pathway in mediating osteoblast adhesion and differentiation on nano-HA/chitosan composite coated titanium implant under diabetic conditions. Biomater Sci 2018; 6:225-238. [PMID: 29231215 DOI: 10.1039/c7bm00652g] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nanophase HA/CS composite coated porous titanium implant exhibited superior biological performance under diabetic conditions compared to pure Ti.
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Affiliation(s)
- Xiang-Yu Ma
- Department of Orthopedics
- General Hospital of Shenyang Military Area Command of Chinese PLA
- Shenyang
- China
- Department of Orthopedics of the 463 Hospital of PLA
| | - Ya-Fei Feng
- Department of Orthopedics
- Xijing Hospital
- Fourth Military Medical University
- Xi'an
- China
| | - Tian-Sheng Wang
- Department of Orthopedics of the 463 Hospital of PLA
- Shenyang
- China
| | - Wei Lei
- Department of Orthopedics
- Xijing Hospital
- Fourth Military Medical University
- Xi'an
- China
| | - Xiang Li
- School of Mechanical Engineering
- Shanghai Jiao Tong University
- State Key Laboratory of Mechanical System and Vibration
- Shanghai
- China
| | - Da-Peng Zhou
- Department of Orthopedics
- General Hospital of Shenyang Military Area Command of Chinese PLA
- Shenyang
- China
| | - Xin-Xin Wen
- Department of Orthopedics of the 463 Hospital of PLA
- Shenyang
- China
- Department of Orthopedics
- Xijing Hospital
| | - Hai-Long Yu
- Department of Orthopedics
- General Hospital of Shenyang Military Area Command of Chinese PLA
- Shenyang
- China
| | - Liang-Bi Xiang
- Department of Orthopedics
- General Hospital of Shenyang Military Area Command of Chinese PLA
- Shenyang
- China
| | - Lin Wang
- Department of Orthopedics
- Xijing Hospital
- Fourth Military Medical University
- Xi'an
- China
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16
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Dhawan U, Pan HA, Shie MJ, Chu YH, Huang GS, Chen PC, Chen WL. The Spatiotemporal Control of Osteoblast Cell Growth, Behavior, and Function Dictated by Nanostructured Stainless Steel Artificial Microenvironments. NANOSCALE RESEARCH LETTERS 2017; 12:86. [PMID: 28168610 PMCID: PMC5293702 DOI: 10.1186/s11671-016-1810-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 12/23/2016] [Indexed: 06/06/2023]
Abstract
The successful application of a nanostructured biomaterial as an implant is strongly determined by the nanotopography size triggering the ideal cell response. Here, nanoporous topography on 304L stainless steel substrates was engineered to identify the nanotopography size causing a transition in the cellular characteristics, and accordingly, the design of nanostructured stainless steel surface as orthopedic implants is proposed. A variety of nanopore diameters ranging from 100 to 220 nm were fabricated by one-step electrolysis process and collectively referred to as artificial microenvironments. Control over the nanopore diameter was achieved by varying bias voltage. MG63 osteoblasts were cultured on the nanoporous surfaces for different days. Immunofluorescence (IF) and scanning electron microscopy (SEM) were performed to compare the modulation in cell morphologies and characteristics. Osteoblasts displayed differential growth parameters and distinct transition in cell behavior after nanopore reached a certain diameter. Nanopores with 100-nm diameter promoted cell growth, focal adhesions, cell area, viability, vinculin-stained area, calcium mineralization, and alkaline phosphatase activity. The ability of these nanoporous substrates to differentially modulate the cell behavior and assist in identifying the transition step will be beneficial to biomedical engineers to develop superior implant geometries, triggering an ideal cell response at the cell-nanotopography interface.
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Affiliation(s)
- Udesh Dhawan
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan, ROC
| | - Hsu-An Pan
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan, ROC
| | - Meng-Je Shie
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan, ROC
| | - Ying Hao Chu
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan, ROC
| | - Guewha S. Huang
- Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan, ROC
| | - Po-Chun Chen
- Institute of Materials Science and Engineering, National Taipei University of Technology, Section 3, Zhongxiao E Road, Taipei City, 106 Taiwan, ROC
| | - Wen Liang Chen
- Department of Biological Science and Technology, National Chiao Tung University, 1001 University Road, Hsinchu, 300 Taiwan, ROC
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Dhawan U, Pan HA, Chu YH, Huang GS, Chen PC, Chen WL. Temporal Control of Osteoblast Cell Growth and Behavior Dictated by Nanotopography and Shear Stress. IEEE Trans Nanobioscience 2016; 15:704-712. [PMID: 28029616 DOI: 10.1109/tnb.2016.2605686] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Biomaterial design involves assessment of cellular response to nanotopography parameters such as shape, dimension of nanotopography features. Here, the effect of nanotopography alongside the in vivo factor, shear stress, on osteoblast cell behavior, is reported. Tantalum oxide nanodots of 50 or 100 nm diameter were engineered using anodized aluminum oxide as a template. Bare tantalum nitride coated silicon substrates were taken as control (flat). MG63 (osteoblast) cells were seeded for 72 hours on flat, 50 or 100 nm nanodots and modulation in cell morphology, cell viability and expression of integrins was studied. Cells displayed a well-extended morphology on 50 nm nanodots in contrast to an elongated morphology on 100 nm nanodots, as observed by scanning electron microscopy and immunofluorescence staining, thereby confirming the cellular response to different nanotopographies. Based on quantitative real-time polymerase chain reaction data, a greater fold change in the expression of α1 , α2 , α3 , α8 , α9 , [Formula: see text], β1 , β4 , β5 , β7 and β8 integrins was observed in cells cultured on 100 nm than on 50 nm nanodots. Moreover, in the presence of a shear stress of 2 dyne/cm2, a 52% increase in the cell viability after culturing the cells for 72 hours was observed on 100 nm nanodots as compared to 50 nm nanodots, thereby validating the effect of shear stress on cell behavior. Duration-of-culture experiments revealed 100 nm nanodots to be an ideal nanotopography choice to engineer optimized implant geometries for an ideal cell response. This study highlights the in vivo factors which need to be considered while designing nanotopographies for in vivo applications, for an ideal response as the cell-nanomaterial interface. Applications in the field of Biomedical, tissue engineering and cancer research are expected.
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18
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Nanochips of Tantalum Oxide Nanodots as artificial-microenvironments for monitoring Ovarian cancer progressiveness. Sci Rep 2016; 6:31998. [PMID: 27534915 PMCID: PMC4989222 DOI: 10.1038/srep31998] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 08/01/2016] [Indexed: 01/17/2023] Open
Abstract
Nanotopography modulates cell characteristics and cell behavior. Nanotopological cues can be exploited to investigate the in-vivo modulation of cell characteristics by the cellular microenvironment. However, the studies explaining the modulation of tumor cell characteristics and identifying the transition step in cancer progressiveness are scarce. Here, we engineered nanochips comprising of Tantalum oxide nanodot arrays of 10, 50, 100 and 200 nm as artificial microenvironments to study the modulation of cancer cell behavior. Clinical samples of different types of Ovarian cancer at different stages were obtained, primary cultures were established and then seeded on different nanochips. Immunofluorescence (IF) was performed to compare the morphologies and cell characteristics. Indices corresponding to cell characteristics were defined. A statistical comparison of the cell characteristics in response to the nanochips was performed. The cells displayed differential growth parameters. Morphology, Viability, focal adhesions, microfilament bundles and cell area were modulated by the nanochips which can be used as a measure to study the cancer progressiveness. The ease of fabrication of nanochips ensures mass-production. The ability of the nanochips to act as artificial microenvironments and modulate cell behavior may lead to further prospects in the markerless monitoring of the progressiveness and ultimately, improving the prognosis of Ovarian cancer.
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Shi S, Peng Q, Shao X, Xie J, Lin S, Zhang T, Li Q, Li X, Lin Y. Self-Assembled Tetrahedral DNA Nanostructures Promote Adipose-Derived Stem Cell Migration via lncRNA XLOC 010623 and RHOA/ROCK2 Signal Pathway. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19353-63. [PMID: 27403707 DOI: 10.1021/acsami.6b06528] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Sirong Shi
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Qiang Peng
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Xiaoru Shao
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Jing Xie
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Shiyu Lin
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Tao Zhang
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Qianshun Li
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Xiaolong Li
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Yunfeng Lin
- State Key Laboratory of Oral
Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
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20
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Dhawan U, Pan HA, Lee CH, Chu YH, Huang GS, Lin YR, Chen WL. Spatial Control of Cell-Nanosurface Interactions by Tantalum Oxide Nanodots for Improved Implant Geometry. PLoS One 2016; 11:e0158425. [PMID: 27362432 PMCID: PMC4928932 DOI: 10.1371/journal.pone.0158425] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 06/15/2016] [Indexed: 11/19/2022] Open
Abstract
Nanotopological cues can be exploited to understand the nature of interactions between cells and their microenvironment to generate superior implant geometries. Nanosurface parameters which modulate the cell behavior and characteristics such as focal adhesions, cell morphology are not clearly understood. Here, we studied the role of different nanotopographic dimensions in modulating the cell behavior, characteristics and ultimately the cell fate and accordingly, a methodology to improve implant surface geometry is proposed. Tantalum oxide nanodots of 50, 100nm dot diameter with an inter-dot spacing of 20, 70nm and heights 40, 100nm respectively, were engineered on Silicon substrates. MG63 cells were cultured for 72 hours and the modulation in morphology, focal adhesions, cell extensible area, cell viability, transcription factors and genes responsible for bone protein secretion as a function of the nanodot diameter, inter-dot distance and nanodot height were evaluated. Nanodots of 50nm diameter with a 20nm inter-dot spacing and 40nm height enhanced cell spreading area by 40%, promoted cell viability by 70% and upregulated transcription factors and genes twice as much, as compared to the 100nm nanodots with 70nm inter-dot spacing and 100nm height. Favorable interactions between cells and all dimensions of 50nm nanodot diameter were observed, determined with Scanning electron microscopy and Immunofluorescence staining. Nanodot height played a vital role in controlling the cell fate. Dimensions of nanodot features which triggered a transition in cell characteristics or behavior was also defined through statistical analysis. The findings of this study provide insights in the parameters of nanotopographic features which can vitally control the cell fate and should therefore be taken into account when designing implant geometries.
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Affiliation(s)
- Udesh Dhawan
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC
| | - Hsu An Pan
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC
| | - Chia Hui Lee
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC
| | - Ying Hao Chu
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC
| | | | - Yan Ren Lin
- Department of Emergency Medicine, Changhua Christian Hospital, Changhua, Taiwan, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, School of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC
| | - Wen Liang Chen
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan, ROC
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21
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Chen Y, Wang L, Huang H, Tan R, Zhao J, Yang S, Zeng R, Wu H, Zhang J, Yu B, Tu M. Mechano-regulatory cellular behaviors of NIH/3T3 in response to the storage modulus of liquid crystalline substrates. J Mech Behav Biomed Mater 2016; 57:42-54. [DOI: 10.1016/j.jmbbm.2015.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 11/02/2015] [Accepted: 11/09/2015] [Indexed: 01/07/2023]
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22
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Zhang B, Ni H, Chen R, Zhang T, Li X, Zhan W, Wang Z, Xu Y. Cytotoxicity effects of three-dimensional graphene in NIH-3T3 fibroblasts. RSC Adv 2016. [DOI: 10.1039/c6ra04018g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present an evaluation of the in vitro cytotoxicity of 3D graphene sheets fabricated by carbonization of polydopamine (PDA) films on a template of aligned nanopore arrays (NPAs) on a stainless steel surface.
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Affiliation(s)
- Bowei Zhang
- The State Key Laboratory of Refractories and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- China
| | - Hongwei Ni
- The State Key Laboratory of Refractories and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- China
| | - Rongsheng Chen
- School of Chemical Engineering and Technology
- Wuhan University of Science and Technology
- Wuhan 430081
- China
| | - Tongcun Zhang
- Institute of Biology and Medicine
- Wuhan University of Science and Technology
- Wuhan 430065
- China
| | - Xi Li
- Institute of Biology and Medicine
- Wuhan University of Science and Technology
- Wuhan 430065
- China
| | - Weiting Zhan
- The State Key Laboratory of Refractories and Metallurgy
- Wuhan University of Science and Technology
- Wuhan 430081
- China
| | - Zhenyu Wang
- Institute of Biology and Medicine
- Wuhan University of Science and Technology
- Wuhan 430065
- China
| | - Yao Xu
- Institute of Biology and Medicine
- Wuhan University of Science and Technology
- Wuhan 430065
- China
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Köse C, Kaçar R, Zorba AP, Bağırova M, Allahverdiyev AM. The effect of CO2 laser beam welded AISI 316L austenitic stainless steel on the viability of fibroblast cells, in vitro. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 60:211-218. [PMID: 26706524 DOI: 10.1016/j.msec.2015.11.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 10/05/2015] [Accepted: 11/12/2015] [Indexed: 11/16/2022]
Abstract
It has been determined by the literature research that there is no clinical study on the in vivo and in vitro interaction of the cells with the laser beam welded joints of AISI 316L biomaterial. It is used as a prosthesis and implant material and that has adequate mechanical properties and corrosion resistance characteristics. Therefore, the interaction of the CO2 laser beam welded samples and samples of the base metal of AISI 316L austenitic stainless steel with L929 fibroblast cells as an element of connective tissue under in vitro conditions has been studied. To study the effect of the base metal and the laser welded test specimens on the viability of the fibroblast cells that act as an element of connective tissues in the body, they were kept in DMEMF-12 medium for 7, 14, 28 days and 18 months. The viability study was experimentally studied using the MTT method for 7, 14, 28 days. In addition, the direct interaction of the fibroblast cells seeded on 6 different plates with the samples was examined with an inverted microscope. The MTT cell viability experiment was repeated on the cells that were in contact with the samples. The statistical relationship was analyzed using a Tukey test for the variance with the GraphPad statistics software. The data regarding metallic ion release were identified with the ICP-MS method after the laser welded and main material samples were kept in cell culture medium for 18 months. The cell viability of the laser welded sample has been detected to be higher than that of the base metal and the control based on 7th day data. However, the laser welded sample's viability of the fibroblast cells has diminished by time during the test period of 14 and 28 days and base metal shows better viability when compared to the laser welded samples. On the other hand, the base metal and the laser welded sample show better cell viability effect when compared to the control group. According to the ICP-MS results of the main material and laser welded samples which were kept in the cell culture medium for 18 months, it was determined that the Fe, Ni and Cr ion concentration released to the cell culture medium from the laser welded test sample was less than that of the main material.
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Affiliation(s)
- Ceyhun Köse
- Faculty of Natural Sciences and Engineering, Department of Mechanical Engineering, Gaziosmanpaşa University, Tokat, Turkey.
| | - Ramazan Kaçar
- Faculty of Technology Department of Manufacturing Engineering, Karabuk University, Karabuk 78050, Turkey.
| | - Aslı Pınar Zorba
- Graduate School of Natural and Applied Sciences, Department of Bioengineering Cell Culture and Tissue Engineering, Yıldız Technical University, Istanbul, Turkey.
| | - Melahat Bağırova
- Department of Bioengineering Cell Culture and Tissue Engineering, Yıldız Technical University, Istanbul, Turkey.
| | - Adil M Allahverdiyev
- Department of Bioengineering Cell Culture and Tissue Engineering, Yıldız Technical University, Istanbul, Turkey.
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Huang NC, Sieber M, Hsu SH. Correlating cell transfectability and motility on materials with different physico-chemical properties. Acta Biomater 2015; 28:55-63. [PMID: 26363377 DOI: 10.1016/j.actbio.2015.09.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 08/25/2015] [Accepted: 09/08/2015] [Indexed: 01/01/2023]
Abstract
Gene delivery into cells can be facilitated by adding plasmid DNA/transfection reagent complexes in culture medium or pre-adsorbing the complexes on the substrate before cell seeding. Using transfection reagents, however, often causes cytotoxicity. Effective delivery of naked plasmid without any transfection reagent remains a challenge. In this study, we cultured human umbilical cord derived mesenchymal stem cells (hMSCs) on different biomaterial substrates with different physico-chemical properties and examined the transfectability of naked plasmid. Specifically, we synthesized a negatively charged polyurethane (PU) to mimic the hyaluronan-modified chitosan (CS-HA) membranes previously found to promote the transfection of naked plasmid. We observed that the PU membranes were as effective as CS-HA membranes in substrate-mediated delivery of naked plasmid into hMSCs. PU membranes with surface microgrooves further increased the gene delivery efficiency to a similar level as the commercial transfection reagent but without the harmful effect. The gene delivery efficiency was associated with the extent of activation of cellular integrins β1 and α5 on different substrates. Moreover, the delivery efficiency was positively correlated with the cell migration rate on various substrates. The substrate-mediated gene delivery by synthetic polymeric substrates supports that integrin activation and cell behavior (e.g. migration and transfectability) changes can be modulated by synthetic polymer surface with microfeatures. The transfection by PU microgrooves is easy, nontoxic, and as effective as the commercial transfection reagent.
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25
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Dhawan U, Lee CH, Huang CC, Chu YH, Huang GS, Lin YR, Chen WL. Topological control of nitric oxide secretion by tantalum oxide nanodot arrays. J Nanobiotechnology 2015; 13:79. [PMID: 26553043 PMCID: PMC4640104 DOI: 10.1186/s12951-015-0144-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/29/2015] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Nitric oxide (NO) plays a very important role in the cardiovascular system as a major secondary messenger in signaling pathway. Its concentration regulates most of the important physiological indexes including the systemic blood pressure, blood flow, regional vascular tone and other cardiac functions. The effect of nanotopography on the NO secretion in cardiomyocytes has not been elucidated before. In this study, we report how the nanotopography can modulate the secretion profile of NO and attempt to elucidate the genetic pathways responsible for the same by using Tantalum Oxide nanodot arrays ranging from 10 to 200 nm. A series of nanodot arrays were fabricated with dot diameter ranging from 10 to 200 nm. Temporal NO release of cardiomyocytes was quantified when grown on different surfaces. Quantitative RT-PCR and Western blot were performed to verify the genetic pathways of NO release. RESULTS After hours 24 of cell seeding, NO release was slowly enhanced by the increase of dot diameter from 10 nm up to 50 nm, mildly enhanced to a medium level at 100 nm, and increase rapidly to a high level at 200 nm. The temporal enhancement of NO release dropped dramatically on day 3. On day 5, a topology-dependent profile was established that maximized at 50 nm and dropped to control level at 200 nm. The NO releasing profile was closely associated with the expression patterns of genes associated with Endothelial nitric oxide synthase (eNOS) pathway [GPCR, PI3K, Akt, Bad, Bcl-2, NFκB(p65), eNOS], but less associated with Inducible nitric oxide synthase (iNOS) pathway (TNF-α, ILK, Akt, IκBα, NFκB, iNOS). Western blotting of Akt, eNOS, iNOS, and NFκB further validated that eNOS pathway was modulated by nanotopology. CONCLUSIONS Based on the findings of the present study, 50, 100 nm can serve as the suitable nanotopography patterns for cardiac implant surface design. These two nanodot arrays promote NO secretion and can also promote the vascular smooth muscle relaxation. The results of this study can improve the heart stent design in the medical treatments.
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Affiliation(s)
- Udesh Dhawan
- Department Material Science and Technology, National Chiao Tung University Hsinchu, 1001 University Road, Hsinchu, 300, Taiwan, ROC.
| | - Chia Hui Lee
- Department Material Science and Technology, National Chiao Tung University Hsinchu, 1001 University Road, Hsinchu, 300, Taiwan, ROC.
| | - Chun-Chung Huang
- Department Material Science and Technology, National Chiao Tung University Hsinchu, 1001 University Road, Hsinchu, 300, Taiwan, ROC.
| | - Ying Hao Chu
- Department Material Science and Technology, National Chiao Tung University Hsinchu, 1001 University Road, Hsinchu, 300, Taiwan, ROC.
| | - Guewha S Huang
- Hokan Life Technology, F2, 793 Fu-Ke Road, Taichung, Taiwan, ROC.
| | - Yan-Ren Lin
- Department of Emergency Medicine, Changhua Christian Hospital, 135 Nanshiao Street, Changhua, 500, Taiwan.
| | - Wen-Liang Chen
- Department of Biological Science and Technology, National Chiao Tung University Hsinchu, 1001 University Road, Hsinchu, 300, Taiwan, ROC.
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26
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Yildirimer L, Seifalian AM. Sterilization-Induced Changes in Surface Topography of Biodegradable POSS-PCLU and the Cellular Response of Human Dermal Fibroblasts. Tissue Eng Part C Methods 2015; 21:614-30. [DOI: 10.1089/ten.tec.2014.0270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Lara Yildirimer
- Division of Surgery & Interventional Science, UCL Centre for Nanotechnology & Regenerative Medicine, University College London, London, United Kingdom
| | - Alexander M. Seifalian
- Division of Surgery & Interventional Science, UCL Centre for Nanotechnology & Regenerative Medicine, University College London, London, United Kingdom
- Royal Free London NHS Foundation Trust Hospital, London, United Kingdom
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27
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Sun M, Deng J, Gao C. The correlation between fibronectin adsorption and attachment of vascular cells on heparinized polycaprolactone membrane. J Colloid Interface Sci 2015; 448:231-7. [DOI: 10.1016/j.jcis.2015.01.082] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/29/2015] [Accepted: 01/29/2015] [Indexed: 11/30/2022]
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Shen Y, Gao M, Ma Y, Yu H, Cui FZ, Gregersen H, Yu Q, Wang G, Liu X. Effect of surface chemistry on the integrin induced pathway in regulating vascular endothelial cells migration. Colloids Surf B Biointerfaces 2014; 126:188-97. [PMID: 25575348 DOI: 10.1016/j.colsurfb.2014.12.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 12/05/2014] [Accepted: 12/09/2014] [Indexed: 01/03/2023]
Abstract
The migration of vascular endothelial cells (ECs) is essential for reendothelialization after implantation of cardiovascular biomaterials. Reendothelialization is largely determined by surface properties of implants. In this study, surfaces modified with various chemical functional groups (CH3, NH2, COOH, OH) prepared by self-assembled monolayers (SAMs) were used as model system. Expressions and distributions of critical proteins in the integrin-induced signaling pathway were examined to explore the mechanisms of surface chemistry regulating EC migration. The results showed that SAMs modulated cell migration were in the order CH3>NH2>OH>COOH, determined by differences in the expressions of focal adhesion components and Rho GTPases. Multiple integrin subunits showed difference in a surface chemistry-dependent manner, which induced a stepwise activation of signaling cascades associated with EC migration. This work provides a broad overview of surface chemistry regulated endothelial cell migration and establishes association among the surface chemistry, cell migration behavior and associated integrin signaling events. Understanding the relationship between these factors will help us to understand the surface/interface behavior between biomaterials and cells, reveal molecular mechanism of cells sensing surface characterization, and guide surface modification of cardiovascular implanted materials.
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Affiliation(s)
- Yang Shen
- Institute of Biomedical Engineering, School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, PR China
| | - Min Gao
- Institute of Biomedical Engineering, School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, PR China
| | - Yunlong Ma
- Institute of Biomedical Engineering, School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, PR China
| | - Hongchi Yu
- Institute of Biomedical Engineering, School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, PR China
| | - Fu-zhai Cui
- State Key Laboratory of New Ceramics and Fine Processing, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, PR China
| | - Hans Gregersen
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400030, PR China
| | - Qingsong Yu
- Center for Surface Science and Plasma Technology, Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA
| | - Guixue Wang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400030, PR China
| | - Xiaoheng Liu
- Institute of Biomedical Engineering, School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, PR China.
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Zhu L, Yang J, Zhang J, Lei D, Xiao L, Cheng X, Lin Y, Peng B. In vitro and in vivo evaluation of a nanoparticulate bioceramic paste for dental pulp repair. Acta Biomater 2014; 10:5156-5168. [PMID: 25182220 DOI: 10.1016/j.actbio.2014.08.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/21/2014] [Accepted: 08/12/2014] [Indexed: 12/18/2022]
Abstract
Bioactive materials play an important role in facilitating dental pulp repair when living dental pulp is exposed after injuries. Mineral trioxide aggregate is the currently recommended material of choice for pulp repair procedures though has several disadvantages, especially the inconvenience of handling. Little information is yet available about the early events and molecular mechanisms involved in bioceramic-mediated dental pulp repair. We aimed to characterize and determine the apatite-forming ability of the novel ready-to-use nanoparticulate bioceramic iRoot BP Plus, and investigate its effects on the in vitro recruitment of human dental pulp stem cells (DPSCs), as well as its capacity to induce dentin bridge formation in an in vivo model of pulp repair. It was found that iRoot BP Plus was nanosized and had excellent apatite-forming ability in vitro. Treatment with iRoot BP Plus extracts promoted the adhesion, migration and attachment of DPSCs, and optimized focal adhesion formation (Vinculin, p-Paxillin and p-Focal adhesion kinase) and stress fibre assembly. Consistent with the in vitro results, we observed the formation of a homogeneous dentin bridge and the expression of odontogenic (dentin sialoprotein, dentin matrix protein 1) and focal adhesion molecules (Vinculin, p-Paxillin) at the injury site of pulp repair model by iRoot BP Plus. Our findings provide valuable insights into the mechanism of bioceramic-mediated dental pulp repair, and the novel revolutionary ready-to-use nanoparticulate bioceramic paste shows promising therapeutic potential in dental pulp repair application.
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Sun M, Deng J, Tang Z, Wu J, Li D, Chen H, Gao C. A correlation study of protein adsorption and cell behaviors on substrates with different densities of PEG chains. Colloids Surf B Biointerfaces 2014; 122:134-142. [DOI: 10.1016/j.colsurfb.2014.06.041] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/03/2014] [Accepted: 06/19/2014] [Indexed: 11/16/2022]
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Ni S, Sun L, Ercan B, Liu L, Ziemer K, Webster TJ. A mechanism for the enhanced attachment and proliferation of fibroblasts on anodized 316L stainless steel with nano-pit arrays. J Biomed Mater Res B Appl Biomater 2014; 102:1297-303. [DOI: 10.1002/jbm.b.33127] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 01/24/2014] [Accepted: 02/10/2014] [Indexed: 01/31/2023]
Affiliation(s)
- Siyu Ni
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 China
- Department of Chemical Engineering, College of Engineering; Northeastern University; Boston Massachusetts
| | - Linlin Sun
- Department of Chemical Engineering, College of Engineering; Northeastern University; Boston Massachusetts
| | - Batur Ercan
- Department of Chemical Engineering, College of Engineering; Northeastern University; Boston Massachusetts
| | - Luting Liu
- Department of Chemical Engineering, College of Engineering; Northeastern University; Boston Massachusetts
| | - Katherine Ziemer
- Department of Chemical Engineering, College of Engineering; Northeastern University; Boston Massachusetts
| | - Thomas J. Webster
- Department of Chemical Engineering, College of Engineering; Northeastern University; Boston Massachusetts
- Center of Excellence for Advanced Materials Research; King Abdulaziz University; Jeddah 21589 Saudi Arabia
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