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Kim J, Jeon J, Lee J, Khoroldulam B, Choi S, Bae J, Hyun JK, Kang S. Electroceuticals for Regeneration of Long Nerve Gap Using Biodegradable Conductive Conduits and Implantable Wireless Stimulator. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302632. [PMID: 37340589 PMCID: PMC10460856 DOI: 10.1002/advs.202302632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 12/12/2012] [Indexed: 06/22/2023]
Abstract
Regeneration of over 10 mm long peripheral nerve defects remains a challenge due to the failure of regeneration by prolonged axotomy and denervation occurring in long-term recovery. Recent studies reveal that conductive conduits and electrical stimulation accelerate the regeneration of long nerve defects. In this study, an electroceutical platform combining a fully biodegradable conductive nerve conduit and a wireless electrical stimulator is proposed to maximize the therapeutic effect on nerve regeneration. Fully biodegradable nerve conduit fabricated using molybdenum (Mo) microparticles and polycaprolactone (PCL) can eliminate the unwanted effects of non-degradable implants, which occupy nerve paths and need to be removed through surgery increasing the risk of complications. The electrical and mechanical properties of Mo/PCL conduits are optimized by controlling the amounts of Mo and tetraglycol lubricant. The dissolution behavior and electrical conductivity of biodegradable nerve conduits in the biomimetic solutions are also evaluated. In in vivo experiments, the integrated strategy of a conductive Mo/PCL conduit with controlled therapeutic electrical stimulation shows accelerated axon regeneration for long sciatic nerve defects in rats compared to the use of the Mo/PCL conduit without stimulation and has a significant therapeutic effect based on the results obtained from the functional recovery test.
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Affiliation(s)
- Jio Kim
- Department of Materials Science and EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Jooik Jeon
- Department of Nanobiomedical Science and BK21 NBM Global Research Center for Regenerative MedicineDankook UniversityCheonan31116Republic of Korea
| | - Ju‐Yong Lee
- Department of Materials Science and EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Badamgarav Khoroldulam
- Department of Nanobiomedical Science and BK21 NBM Global Research Center for Regenerative MedicineDankook UniversityCheonan31116Republic of Korea
| | - Sung‐Geun Choi
- Department of Materials Science and EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Jae‐Young Bae
- Department of Materials Science and EngineeringSeoul National UniversitySeoul08826Republic of Korea
| | - Jung Keun Hyun
- Department of Nanobiomedical Science and BK21 NBM Global Research Center for Regenerative MedicineDankook UniversityCheonan31116Republic of Korea
- Department of Rehabilitation MedicineCollege of MedicineDankook UniversityCheonan31116Republic of Korea
- Institute of Tissue Regeneration Engineering (ITREN)Dankook UniversityCheonan31116Republic of Korea
| | - Seung‐Kyun Kang
- Department of Materials Science and EngineeringSeoul National UniversitySeoul08826Republic of Korea
- Research Institute of Advanced Materials (RIAM)Seoul National UniversitySeoul08826Republic of Korea
- Nano Systems Institute SOFT FoundrySeoul National UniversitySeoul08826Republic of korea
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2
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Frenzel J, Kupferer A, Zink M, Mayr SG. Laminin Adsorption and Adhesion of Neurons and Glial Cells on Carbon Implanted Titania Nanotube Scaffolds for Neural Implant Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3858. [PMID: 36364633 PMCID: PMC9656521 DOI: 10.3390/nano12213858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/17/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Interfacing neurons persistently to conductive matter constitutes one of the key challenges when designing brain-machine interfaces such as neuroelectrodes or retinal implants. Novel materials approaches that prevent occurrence of loss of long-term adhesion, rejection reactions, and glial scarring are highly desirable. Ion doped titania nanotube scaffolds are a promising material to fulfill all these requirements while revealing sufficient electrical conductivity, and are scrutinized in the present study regarding their neuron-material interface. Adsorption of laminin, an essential extracellular matrix protein of the brain, is comprehensively analyzed. The implantation-dependent decline in laminin adsorption is revealed by employing surface characteristics such as nanotube diameter, ζ-potential, and surface free energy. Moreover, the viability of U87-MG glial cells and SH-SY5Y neurons after one and four days are investigated, as well as the material's cytotoxicity. The higher conductivity related to carbon implantation does not affect the viability of neurons, although it impedes glial cell proliferation. This gives rise to novel titania nanotube based implant materials with long-term stability, and could reduce undesirable glial scarring.
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Affiliation(s)
- Jan Frenzel
- Leibniz Institute of Surface Engineering (IOM), 04318 Leipzig, Germany
- Division of Surface Physics, Faculty of Physics and Earth Sciences, Leipzig University, 04103 Leipzig, Germany
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Leipzig University, 04103 Leipzig, Germany
| | - Astrid Kupferer
- Leibniz Institute of Surface Engineering (IOM), 04318 Leipzig, Germany
- Division of Surface Physics, Faculty of Physics and Earth Sciences, Leipzig University, 04103 Leipzig, Germany
| | - Mareike Zink
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Leipzig University, 04103 Leipzig, Germany
| | - Stefan G. Mayr
- Leibniz Institute of Surface Engineering (IOM), 04318 Leipzig, Germany
- Division of Surface Physics, Faculty of Physics and Earth Sciences, Leipzig University, 04103 Leipzig, Germany
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3
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Basturkmen B, Ergene E, Doganay D, Yilgor Huri P, Unalan HE, Aksoy EA. Silver nanowire loaded poly(ε-caprolactone) nanocomposite fibers as electroactive scaffolds for skeletal muscle regeneration. BIOMATERIALS ADVANCES 2022; 134:112567. [PMID: 35527139 DOI: 10.1016/j.msec.2021.112567] [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: 06/21/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 06/14/2023]
Abstract
Volumetric muscle loss (VML) due to trauma and tumor removal operations affects millions of people every year. Although skeletal muscle has a natural repair mechanism, it cannot provide self-healing above a critical level of VML. In this study, nanocomposite aligned fiber scaffolds as support materials were developed for volumetric skeletal muscle regeneration. For this purpose, silver nanowire (Ag NW) loaded poly(ε-caprolactone) (PCL) nanocomposite fiber scaffolds (PCL-Ag NW) were prepared to mimic the aligned electroactive structure of skeletal muscle and provide topographic and conductive environment to modulate cellular behavior and orientation. A computer-aided rotational wet spinning (RWS) system was designed to produce high-yield fiber scaffolds. Nanocomposite fiber bundles with lengths of 50 cm were fabricated via this computer-aided RWS system. The morphological, chemical, thermal properties and biodegradation profiles of PCL and PCL-Ag NW nanocomposite fibers were characterized in detail. The proliferation behavior and morphology of C2C12 mouse myoblasts were investigated on PCL and PCL-Ag NW nanocomposite fibrous scaffolds with and without electrical stimulation. Significantly enhanced cell proliferation was observed on PCL-Ag NW nanocomposite fibers compared to neat PCL fibers with electrical stimulations of 1.5 V, 3 V and without electrical stimulation.
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Affiliation(s)
- Berk Basturkmen
- Department of Polymer Science and Technology, Hacettepe University, Ankara 06800, Turkey
| | - Emre Ergene
- Department of Biomedical Engineering, Ankara University, Ankara 06830, Turkey
| | - Doga Doganay
- Department of Metallurgical and Materials Engineering, Middle East Technical University (METU), Ankara 06800, Turkey
| | - Pinar Yilgor Huri
- Department of Biomedical Engineering, Ankara University, Ankara 06830, Turkey
| | - Husnu Emrah Unalan
- Department of Metallurgical and Materials Engineering, Middle East Technical University (METU), Ankara 06800, Turkey
| | - Eda Ayse Aksoy
- Department of Polymer Science and Technology, Hacettepe University, Ankara 06800, Turkey; Department of Basic Pharmaceutical Sciences, Hacettepe University, Ankara 06100, Turkey.
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4
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Current Progress in Vascular Engineering and Its Clinical Applications. Cells 2022; 11:cells11030493. [PMID: 35159302 PMCID: PMC8834640 DOI: 10.3390/cells11030493] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 01/28/2022] [Accepted: 01/29/2022] [Indexed: 02/04/2023] Open
Abstract
Coronary heart disease (CHD) is caused by narrowing or blockage of coronary arteries due to atherosclerosis. Coronary artery bypass grafting (CABG) is widely used for the treatment of severe CHD cases. Although autologous vessels are a preferred choice, healthy autologous vessels are not always available; hence there is a demand for tissue engineered vascular grafts (TEVGs) to be used as alternatives. However, producing clinical grade implantable TEVGs that could healthily survive in the host with long-term patency is still a great challenge. There are additional difficulties in producing small diameter (<6 mm) vascular conduits. As a result, there have not been TEVGs that are commercially available. Properties of vascular scaffolds such as tensile strength, thrombogenicity and immunogenicity are key factors that determine the biocompatibility of TEVGs. The source of vascular cells employed to produce TEVGs is a limiting factor for large-scale productions. Advanced technologies including the combined use of natural and biodegradable synthetic materials for scaffolds in conjunction with the use of mesenchyme stem cells or induced pluripotent stem cells (iPSCs) provide promising solutions for vascular tissue engineering. The aim of this review is to provide an update on various aspects in this field and the current status of TEVG clinical applications.
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Casella A, Panitch A, Leach JK. Endogenous Electric Signaling as a Blueprint for Conductive Materials in Tissue Engineering. Bioelectricity 2021; 3:27-41. [PMID: 34476376 PMCID: PMC8370482 DOI: 10.1089/bioe.2020.0027] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Bioelectricity plays an important role in cell behavior and tissue modulation, but is understudied in tissue engineering research. Endogenous electrical signaling arises from the transmembrane potential inherent to all cells and contributes to many cell behaviors, including migration, adhesion, proliferation, and differentiation. Electrical signals are also involved in tissue development and repair. Synthetic and natural conductive materials are under investigation for leveraging endogenous electrical signaling cues in tissue engineering applications due to their ability to direct cell differentiation, aid in maturing electroactive cell types, and promote tissue functionality. In this review, we provide a brief overview of bioelectricity and its impact on cell behavior, report recent literature using conductive materials for tissue engineering, and discuss opportunities within the field to improve experimental design when using conductive substrates.
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Affiliation(s)
- Alena Casella
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
| | - Alyssa Panitch
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
- Department of Surgery and UC Davis Health, Sacramento, California, USA
| | - J. Kent Leach
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, California, USA
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Ambrožić G, Kolympadi Markovic M, Peter R, Kavre Piltaver I, Jelovica Badovinac I, Čakara D, Marković D, Knez M. Building organosilica hybrid nanohemispheres via thiol-ene click reaction on alumina thin films deposited by atomic layer deposition (ALD). J Colloid Interface Sci 2020; 560:303-311. [DOI: 10.1016/j.jcis.2019.10.074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/14/2019] [Accepted: 10/19/2019] [Indexed: 10/25/2022]
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7
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Komuro H, Wint WY, Horiuchi N, Nozaki K, Sasano T, Miyashin M, Yamashita K, Nagai A. An oriented hydroxyapatite film with arrayed plate‐like particles enhance chondrogenic differentiation of ATDC5 cells. J Biomed Mater Res A 2019; 108:537-544. [DOI: 10.1002/jbm.a.36834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 10/30/2019] [Accepted: 11/01/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Hiroaki Komuro
- Department of Cardiovascular Physiology, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - Wit Y. Wint
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - Naohiro Horiuchi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University Tokyo Japan
| | - Kosuke Nozaki
- Department of Restorative Sciences, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - Tetsuo Sasano
- Department of Cardiovascular Physiology, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - Michiyo Miyashin
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - Kimihiro Yamashita
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University Tokyo Japan
| | - Akiko Nagai
- Department of Anatomy, School of Dentistry Aichi Gakuin University Nagoya Japan
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8
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Mazare A, Park J, Simons S, Mohajernia S, Hwang I, Yoo JE, Schneider H, Fischer MJ, Schmuki P. Black TiO 2 nanotubes: Efficient electrodes for triggering electric field-induced stimulation of stem cell growth. Acta Biomater 2019; 97:681-688. [PMID: 31419565 DOI: 10.1016/j.actbio.2019.08.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/19/2019] [Accepted: 08/11/2019] [Indexed: 11/29/2022]
Abstract
TiO2 nanostructures represent a key platform for biomedical applications, due to the combination of biocompatibility and high surface area. Especially TiO2 nanotube layers have been widely investigated due to controllable nanotopographic effects as well as for electrodes in electrostimulation experiments. In the present work we produce Ar/H2-reduced 'black' TiO2 nanotube arrays with a strongly enhanced electrical conductivity and explore their interaction with mesenchymal stem cells when used as electrodes to apply electric fields (EF) across the cells. While we observe no significant change in cell adhesion and their focal contact formation on these high conductivity nanotubes, we do observe a rapid stem cell response when EF is engaged using the 'black' TiO2 nanotube arrays as electrodes. Compared to as-formed nanotube arrays, a faster stem cell growth was observed and a lower EF intensity caused an intracellular calcium level elevation. Our results indicate that the increased conductivity in TiO2 nanotubes significantly enhances the early stem cell response to minimal electric field stimuli. STATEMENT OF SIGNIFICANCE: The use of TiO2 nanostructures in biomedical applications is widely investigated, especially considering the nanostructured surface influence on the biomaterial-cell interactions. We have previously shown that an applied electric field (EF) on stem cells grown on TiO2 nanotubes leads to synergistic osteogenic stimulation in the absence of biochemical bone-inducing supplements. Here we report that black (i.e. highly conductive nanotubes obtained by reduction treatments) TiO2 nanotubes enable short-time EF effects on stem cells: we observe a faster stem cell growth and a significantly enhanced early stem cell response to minimal EF stimuli. The application of such nanostructures under electric field is promising for therapeutic interventions for bone regeneration and tissue engineering approaches.
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Affiliation(s)
- A Mazare
- Friedrich-Alexander University, Department of Materials Science WW4-LKO, 91058 Erlangen, Germany
| | - J Park
- University Hospital Erlangen, Children Hospital, 91054 Erlangen, Germany
| | - S Simons
- Friedrich-Alexander University, Department of Materials Science WW4-LKO, 91058 Erlangen, Germany
| | - S Mohajernia
- Friedrich-Alexander University, Department of Materials Science WW4-LKO, 91058 Erlangen, Germany
| | - I Hwang
- Friedrich-Alexander University, Department of Materials Science WW4-LKO, 91058 Erlangen, Germany
| | - J E Yoo
- Friedrich-Alexander University, Department of Materials Science WW4-LKO, 91058 Erlangen, Germany
| | - H Schneider
- University Hospital Erlangen, Children Hospital, 91054 Erlangen, Germany
| | - M J Fischer
- Medical University of Vienna, Center for Physiology and Pharmacology, 1090 Vienna, Austria
| | - P Schmuki
- Friedrich-Alexander University, Department of Materials Science WW4-LKO, 91058 Erlangen, Germany.
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9
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A Review on Biomaterials for 3D Conductive Scaffolds for Stimulating and Monitoring Cellular Activities. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9050961] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
During the last years, scientific research in biotechnology has been reporting a considerable boost forward due to many advances marked in different technological areas. Researchers working in the field of regenerative medicine, mechanobiology and pharmacology have been constantly looking for non-invasive methods able to track tissue development, monitor biological processes and check effectiveness in treatments. The possibility to control cell cultures and quantify their products represents indeed one of the most promising and exciting hurdles. In this perspective, the use of conductive materials able to map cell activity in a three-dimensional environment represents the most interesting approach. The greatest potential of this strategy relies on the possibility to correlate measurable changes in electrical parameters with specific cell cycle events, without affecting their maturation process and considering a physiological-like setting. Up to now, several conductive materials has been identified and validated as possible solutions in scaffold development, but still few works have stressed the possibility to use conductive scaffolds for non-invasive electrical cell monitoring. In this picture, the main objective of this review was to define the state-of-the-art concerning conductive biomaterials to provide researchers with practical guidelines for developing specific applications addressing cell growth and differentiation monitoring. Therefore, a comprehensive review of all the available conductive biomaterials (polymers, carbon-based, and metals) was given in terms of their main electric characteristics and range of applications.
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10
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Kavand H, Rahaie M, Koohsorkhi J, Haghighipour N, Bonakdar S. A conductive cell-imprinted substrate based on CNT-PDMS composite. Biotechnol Appl Biochem 2019; 66:445-453. [PMID: 30817028 DOI: 10.1002/bab.1741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 02/24/2019] [Indexed: 11/08/2022]
Abstract
Cell function regulation is influenced by continuous biochemical and biophysical signal exchange within the body. Substrates with nano/micro-scaled topographies that mimic the physiological niche are widely applied for tissue engineering applications. As the cartilage niche is composed of several stimulating factors, a multifunctional substrate providing topographical features while having the capability of electrical stimulation is presented. Herein, we demonstrate a biocompatible and conductive chondrocyte cell-imprinted substrate using polydimethylsiloxane (PDMS) and carbon nanotubes (CNTs) as conductive fillers. Unlike the conventional silicon wafers or structural photoresist masters used for molding, cell surface topographical replication is challenging as biological cells showed extremely sensitive to chemical solvent residues during molding. The composite showed no significant difference compared with PDMS with regard to cytotoxicity, whereas an enhanced cell adhesion was observed on the conductive composite's surface. Integration of nanomaterials into the cell seeding scaffolds can make tissue regeneration process more efficient.
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Affiliation(s)
- Hanie Kavand
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Mahdi Rahaie
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Javad Koohsorkhi
- Advanced Micro and Nano Devices Lab, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | | | - Shahin Bonakdar
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
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11
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Khokhlova M, Dykas M, Krishnan-Kutty V, Patra A, Venkatesan T, Prellier W. Oxide thin films as bioactive coatings. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:033001. [PMID: 30523972 DOI: 10.1088/1361-648x/aaefbc] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Growth and survival of biological cells (eukaryotes and prokaryotes) on artificial environments often depend on their interactions with the specific surface. Various organic materials can be coated on substrates to assist cells' adhesion and other subsequent cellular processes. However, these coatings are expensive, degrade over short time period, and may even interfere with the cells' signaling processes. Therefore, the use of inorganic surfaces in order to control cellular interactions is of scientific importance from fundamental and application perspectives. Among inorganic materials, oxide thin films have received considerable attention. Thin films of oxides have the advantage of tailoring the surfaces for cellular interactions while using a negligible amount of the oxide material. Here, we review the lesser known application of inorganic oxide coatings as biocompatible and implantable platforms for different purposes, such as biofilm inhibition, cell culture and implant enhancements.
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Affiliation(s)
- M Khokhlova
- Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, Normandie Université, 6 Bd Maréchal Juin, F-14050 Caen Cedex 4, France
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12
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Basu S, Ghosh A, Barui A, Basu B. Epithelial cell functionality on electroconductive Fe/Sr co-doped biphasic calcium phosphate. J Biomater Appl 2019; 33:1035-1052. [PMID: 30630385 DOI: 10.1177/0885328218821549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the perspective of dental restorative applications, co-doped bioceramics have not been explored much. From the clinical perspective, a successful dental implant is expected to interact with peri-prosthetic bones, gingival tissue, and surrounding connective tissues. The interaction of implant and implant coating materials with bone tissue is well studied. However, their interaction with surrounding epithelial components needs scientific validation. In this context, the present study aims at quantitative evaluation of the electrical properties of Fe/Sr co-doped biphasic calcium phosphate (BCP) samples and assessment of their cytocompatibility with epithelial (vero) cells. Sr/Fe co-doped BCPs were prepared by sol-gel synthesis technique, with different dopant concentration. Impact of co-doping on conductivity was assessed and interestingly an increase in conductivity with dopant amount was recorded in different co-doped BCPs. Cellular study showed the significant ( p = 0.01) increase in both cellular viability and functionality with increasing conductivity of samples. Higher epithelial cell adhesion indicates that (Sr/Fe) co-doped BCP would be favorable for faster epithelial sealing and also would reduce the chances of infection. Real-time PCR and immunofluorescence studies indicated that the expression of the epithelial marker (E-cadherin) significantly ( p = 0.01) increased in 10, 30 and 40 mol% co-doped samples in comparison to undoped BCP. In contrast to E-cadherin, fold change of β-catenin remains unchanged amongst the co-doped ceramics, implying the absence of tumorigenic potential of (Sr/Fe) co-doped BCP. In addition, immune-fluorescence signatures for cellular polarity are established from enhanced expression PARD3 protein, which has major relevance for cellular morphogenesis and cell division. Summarizing, the present study establishes the efficacy of Sr/Fe co-doped BCPs as a dental implant coating material and its ability to modulate vero cell functionality.
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Affiliation(s)
- Subhadip Basu
- 1 Laboratory for Biomaterials, Materials Research Center, Indian Institute of Science, Bangalore, India
| | - Aritri Ghosh
- 2 Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Howrah, India
| | - Ananya Barui
- 2 Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Howrah, India
| | - Bikramjit Basu
- 1 Laboratory for Biomaterials, Materials Research Center, Indian Institute of Science, Bangalore, India.,3 Center for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India
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13
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Choi SW, Choi WJ, Kim EH, Moon SH, Park SJ, Lee JO, Kim SH. Inflammatory Bone Resorption and Antiosteosarcoma Potentials of Zinc Ion Sustained Release ZnO Chips: Friend or Foe? ACS Biomater Sci Eng 2016; 2:494-500. [DOI: 10.1021/acsbiomaterials.5b00395] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Sik-Won Choi
- Laboratory of Translational Therapeutics,
Pharmacology Research Center, Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
| | - Won Jin Choi
- Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
| | - Eun Hye Kim
- Laboratory of Translational Therapeutics,
Pharmacology Research Center, Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
| | - Seong-Hee Moon
- Laboratory of Translational Therapeutics,
Pharmacology Research Center, Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
- Department of Biology, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Sang-Joon Park
- Department of Histology, College of Veterinary
Medicine, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Jeong-O Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
| | - Seong Hwan Kim
- Laboratory of Translational Therapeutics,
Pharmacology Research Center, Drug Discovery Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
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14
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Thrivikraman G, Lee PS, Hess R, Haenchen V, Basu B, Scharnweber D. Interplay of Substrate Conductivity, Cellular Microenvironment, and Pulsatile Electrical Stimulation toward Osteogenesis of Human Mesenchymal Stem Cells in Vitro. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23015-23028. [PMID: 26418613 DOI: 10.1021/acsami.5b06390] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The influences of physical stimuli such as surface elasticity, topography, and chemistry over mesenchymal stem cell proliferation and differentiation are well investigated. In this context, a fundamentally different approach was adopted, and we have demonstrated the interplay of inherent substrate conductivity, defined chemical composition of cellular microenvironment, and intermittent delivery of electric pulses to drive mesenchymal stem cell differentiation toward osteogenesis. For this, conducting polyaniline (PANI) substrates were coated with collagen type 1 (Coll) alone or in association with sulfated hyaluronan (sHya) to form artificial extracellular matrix (aECM), which mimics the native microenvironment of bone tissue. Further, bone marrow derived human mesenchymal stem cells (hMSCs) were cultured on these moderately conductive (10(-4)-10(-3) S/cm) aECM coated PANI substrates and exposed intermittently to pulsed electric field (PEF) generated through transformer-like coupling (TLC) approach over 28 days. On the basis of critical analysis over an array of end points, it was inferred that Coll/sHya coated PANI (PANI/Coll/sHya) substrates had enhanced proliferative capacity of hMSCs up to 28 days in culture, even in the absence of PEF stimulation. On the contrary, the adopted PEF stimulation protocol (7 ms rectangular pulses, 3.6 mV/cm, 10 Hz) is shown to enhance osteogenic differentiation potential of hMSCs. Additionally, PEF stimulated hMSCs had also displayed different morphological characteristics as their nonstimulated counterparts. Concomitantly, earlier onset of ALP activity was also observed on PANI/Coll/sHya substrates and resulted in more calcium deposition. Moreover, real-time polymerase chain reaction results indicated higher mRNA levels of alkaline phosphatase and osteocalcin, whereas the expression of other osteogenic markers such as Runt-related transcription factor 2, Col1A, and osteopontin exhibited a dynamic pattern similar to control cells that are cultured in osteogenic medium. Taken together, our experimental results illustrate the interplay of multiple parameters such as substrate conductivity, electric field stimulation, and aECM coating on the modulation of hMSC proliferation and differentiation in vitro.
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Affiliation(s)
- Greeshma Thrivikraman
- Max Bergmann Center of Biomaterials, Technische Universität Dresden , Budapester Straße 27, 01069 Dresden, Germany
- Centre for Nano Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Poh S Lee
- Max Bergmann Center of Biomaterials, Technische Universität Dresden , Budapester Straße 27, 01069 Dresden, Germany
| | - Ricarda Hess
- Max Bergmann Center of Biomaterials, Technische Universität Dresden , Budapester Straße 27, 01069 Dresden, Germany
| | - Vanessa Haenchen
- Max Bergmann Center of Biomaterials, Technische Universität Dresden , Budapester Straße 27, 01069 Dresden, Germany
| | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science , Bangalore 560012, India
| | - Dieter Scharnweber
- Max Bergmann Center of Biomaterials, Technische Universität Dresden , Budapester Straße 27, 01069 Dresden, Germany
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Javid A, Kumar M, Han JG. Nanoscale surface conductivity analysis of plasma sputtered carbon thin films. RSC Adv 2015. [DOI: 10.1039/c5ra17068k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present work demonstrates the phenomenon of nanoscale surface conductivity variation in various plasma conditions of sputtering induced carbon thin films.
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Affiliation(s)
- Amjed Javid
- Center for Advanced Plasma Surface Technology (CAPST)
- NU-SKKU Joint Institute for Plasma Nano-Materials (IPNM)
- Advanced Materials Science and Engineering
- Sungkyunkwan University
- Suwon
| | - Manish Kumar
- Center for Advanced Plasma Surface Technology (CAPST)
- NU-SKKU Joint Institute for Plasma Nano-Materials (IPNM)
- Advanced Materials Science and Engineering
- Sungkyunkwan University
- Suwon
| | - Jeon Geon Han
- Center for Advanced Plasma Surface Technology (CAPST)
- NU-SKKU Joint Institute for Plasma Nano-Materials (IPNM)
- Advanced Materials Science and Engineering
- Sungkyunkwan University
- Suwon
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