1
|
Amani Hamedani H, Stegall T, Yang Y, Wang H, Menon A, Bhalotia A, Karathanasis E, Capadona JR, Hess-Dunning A. Flexible multifunctional titania nanotube array platform for biological interfacing. MRS BULLETIN 2023; 49:299-309. [PMID: 38645611 PMCID: PMC11026245 DOI: 10.1557/s43577-023-00628-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 10/19/2023] [Indexed: 04/23/2024]
Abstract
Abstract The current work presents a novel flexible multifunctional platform for biological interface applications. The use of titania nanotube arrays (TNAs) as a multifunctional material is explored for soft-tissue interface applications. In vitro biocompatibility of TNAs to brain-derived cells was first examined by culturing microglia cells-the resident immune cells of the central nervous system on the surface of TNAs. The release profile of an anti-inflammatory drug, dexamethasone from TNAs-on-polyimide substrates, was then evaluated under different bending modes. Flexible TNAs-on-polyimide sustained a linear release of anti-inflammatory dexamethasone up to ~11 days under different bending conditions. Finally, microfabrication processes for patterning and transferring TNA microsegments were developed to facilitate structural stability during device flexing and to expand the set of compatible polymer substrates. The techniques developed in this study can be applied to integrate TNAs or other similar nanoporous inorganic films onto various polymer substrates. Impact statement Titania nanotube arrays (TNAs) are highly tunable and biocompatible structures that lend themselves to multifunctional implementation in implanted devices. A particularly important aspect of titania nanotubes is their ability to serve as nano-reservoirs for drugs or other therapeutic agents that slowly release after implantation. To date, TNAs have been used to promote integration with rigid, dense tissues for dental and orthopedic applications. This work aims to expand the implant applications that can benefit from TNAs by integrating them onto soft polymer substrates, thereby promoting compatibility with soft tissues. The successful direct growth and integration of TNAs on polymer substrates mark a critical step toward developing mechanically compliant implantable systems with drug delivery from nanostructured inorganic functional materials. Diffusion-driven release kinetics and the high drug-loading efficiency of TNAs offer tremendous potential for sustained drug delivery for scientific investigations, to treat injury and disease, and to promote device integration with biological tissues. This work opens new opportunities for developing novel and more effective implanted devices that can significantly improve patient outcomes and quality of life. Graphical abstract Supplementary information The online version contains supplementary material available at 10.1557/s43577-023-00628-y.
Collapse
Affiliation(s)
- Hoda Amani Hamedani
- Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, USA
- Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, USA
| | - Thomas Stegall
- Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, USA
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
| | - Yi Yang
- Department of Electrical, Computer, and Systems Engineering, Case Western Reserve University, Cleveland, USA
| | - Haochen Wang
- Department of Electrical, Computer, and Systems Engineering, Case Western Reserve University, Cleveland, USA
| | - Ashwin Menon
- Department of Mechanical Engineering, Case Western Reserve University, Cleveland, USA
| | - Anubhuti Bhalotia
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
| | - Efstathios Karathanasis
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
- Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, USA
| | - Jeffrey R. Capadona
- Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, USA
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
| | - Allison Hess-Dunning
- Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, USA
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
- Department of Electrical, Computer, and Systems Engineering, Case Western Reserve University, Cleveland, USA
| |
Collapse
|
2
|
Zheng Y, Zhao L, Li Y, Zhang X, Zhang W, Wang J, Liu L, An W, Jiao H, Ma C. Nanostructure Mediated Piezoelectric Effect of Tetragonal BaTiO 3 Coatings on Bone Mesenchymal Stem Cell Shape and Osteogenic Differentiation. Int J Mol Sci 2023; 24:4051. [PMID: 36835464 PMCID: PMC9961896 DOI: 10.3390/ijms24044051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/05/2023] [Accepted: 02/15/2023] [Indexed: 02/19/2023] Open
Abstract
In recent years, porous titanium (Ti) scaffolds with BaTiO3 coatings have been designed to promote bone regeneration. However, the phase transitions of BaTiO3 have been understudied, and their coatings have yielded low effective piezoelectric coefficients (EPCs < 1 pm/V). In addition, piezoelectric nanomaterials bring many advantages in eliciting cell-specific responses. However, no study has attempted to design a nanostructured BaTiO3 coating with high EPCs. Herein, nanoparticulate tetragonal phase BaTiO3 coatings with cube-like nanoparticles but different effective piezoelectric coefficients were fabricated via anodization combining two hydrothermal processes. The effects of nanostructure-mediated piezoelectricity on the spreading, proliferation, and osteogenic differentiation of human jaw bone marrow mesenchymal stem cells (hJBMSCs) were explored. We found that the nanostructured tetragonal BaTiO3 coatings exhibited good biocompatibility and an EPC-dependent inhibitory effect on hJBMSC proliferation. The nanostructured tetragonal BaTiO3 coatings of relatively smaller EPCs (<10 pm/V) exhibited hJBMSC elongation and reorientation, broad lamellipodia extension, strong intercellular connection and osteogenic differentiation enhancement. Overall, the improved hJBMSC characteristics make the nanostructured tetragonal BaTiO3 coatings promising for application on implant surfaces to promote osseointegration.
Collapse
Affiliation(s)
- Yafei Zheng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China
| | - Lingzhou Zhao
- Air Force Medical Center, The Fourth Military Medical University, 30 Fucheng Road, Beijing 100089, China
| | - Ying Li
- Air Force Medical Center, The Fourth Military Medical University, 30 Fucheng Road, Beijing 100089, China
| | - Xinyuan Zhang
- School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Wei Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China
| | - Jing Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China
| | - Lipeng Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China
| | - Weikang An
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China
| | - Hua Jiao
- School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Chufan Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China
- Air Force Medical Center, The Fourth Military Medical University, 30 Fucheng Road, Beijing 100089, China
| |
Collapse
|
3
|
Bertel L, Miranda DA, García-Martín JM. Nanostructured Titanium Dioxide Surfaces for Electrochemical Biosensing. SENSORS (BASEL, SWITZERLAND) 2021; 21:6167. [PMID: 34577374 PMCID: PMC8468921 DOI: 10.3390/s21186167] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/03/2021] [Accepted: 09/13/2021] [Indexed: 12/03/2022]
Abstract
TiO2 electrochemical biosensors represent an option for biomolecules recognition associated with diseases, food or environmental contaminants, drug interactions and related topics. The relevance of TiO2 biosensors is due to the high selectivity and sensitivity that can be achieved. The development of electrochemical biosensors based on nanostructured TiO2 surfaces requires knowing the signal extracted from them and its relationship with the properties of the transducer, such as the crystalline phase, the roughness and the morphology of the TiO2 nanostructures. Using relevant literature published in the last decade, an overview of TiO2 based biosensors is here provided. First, the principal fabrication methods of nanostructured TiO2 surfaces are presented and their properties are briefly described. Secondly, the different detection techniques and representative examples of their applications are provided. Finally, the functionalization strategies with biomolecules are discussed. This work could contribute as a reference for the design of electrochemical biosensors based on nanostructured TiO2 surfaces, considering the detection technique and the experimental electrochemical conditions needed for a specific analyte.
Collapse
Affiliation(s)
- Linda Bertel
- CMN-CIMBIOS Group, Escuela de Física, Universidad Industrial de Santander, Cra 27 Cll 9, Bucaramanga 680002, Colombia; (L.B.); (D.A.M.)
| | - David A. Miranda
- CMN-CIMBIOS Group, Escuela de Física, Universidad Industrial de Santander, Cra 27 Cll 9, Bucaramanga 680002, Colombia; (L.B.); (D.A.M.)
| | - José Miguel García-Martín
- Instituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, E-28760 Madrid, Spain
| |
Collapse
|
4
|
Gulati K, Zhang Y, Di P, Liu Y, Ivanovski S. Research to Clinics: Clinical Translation Considerations for Anodized Nano-Engineered Titanium Implants. ACS Biomater Sci Eng 2021; 8:4077-4091. [PMID: 34313123 DOI: 10.1021/acsbiomaterials.1c00529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Titania nanotubes (TNTs) fabricated on titanium orthopedic and dental implants have shown significant potential in "proof of concept" in vitro, ex vivo, and short-term in vivo studies. However, most studies do not focus on a clear direction for future research towards clinical translation, and there exists a knowledge gap in identifying key research challenges that must be addressed to progress to the clinical setting. This review focuses on such challenges with respect to anodized titanium implants modified with TNTs, including optimized fabrication on clinically utilized microrough surfaces, clinically relevant bioactivity assessments, and controlled/tailored local release of therapeutics. Further, long-term in vivo investigations in compromised animal models under loading conditions are needed. We also discuss and detail challenges and progress related to the mechanical stability of TNT-based implants, corrosion resistance/electrochemical stability, optimized cleaning/sterilization, packaging/aging, and nanotoxicity concerns. This extensive, clinical translation focused review of TNTs modified Ti implants aims to foster improved understanding of key research gaps and advances, informing future research in this domain.
Collapse
Affiliation(s)
- Karan Gulati
- The University of Queensland, School of Dentistry, Herston, Queensland 4006, Australia
| | - Yifan Zhang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology and National Clinical Research Centre for Oral Diseases and National Engineering Laboratory for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Ping Di
- Department of Oral Implantology, Peking University School and Hospital of Stomatology and National Clinical Research Centre for Oral Diseases and National Engineering Laboratory for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Sašo Ivanovski
- The University of Queensland, School of Dentistry, Herston, Queensland 4006, Australia
| |
Collapse
|
5
|
Srimurugan V, Jothiprakash CG, Prasanth R. Efficiency enhancement in a stoichiometrically stable CdS/TiO 2 nanotube heterostructure electrode for sunlight-driven hydrogen generation. NEW J CHEM 2021. [DOI: 10.1039/d1nj00735a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A stoichiometrically stable CdS/TiO2 heterostructured electrode was developed via electrodeposition for efficient photoelectrochemical conversion.
Collapse
Affiliation(s)
- V. Srimurugan
- UNESCO Madanjeet School of Green Energy Technologies
- Pondicherry University
- Pondicherry
- India
| | - C. G. Jothiprakash
- UNESCO Madanjeet School of Green Energy Technologies
- Pondicherry University
- Pondicherry
- India
| | - R. Prasanth
- UNESCO Madanjeet School of Green Energy Technologies
- Pondicherry University
- Pondicherry
- India
| |
Collapse
|
6
|
Arkusz K, Paradowska E. Impedimetric Detection of Femtomolar Levels of Interleukin6, Interleukin 8, and Tumor Necrosis Factor Alpha Based on Thermally Modified Nanotubular Titanium Dioxide Arrays. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2399. [PMID: 33266223 PMCID: PMC7760759 DOI: 10.3390/nano10122399] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/23/2020] [Accepted: 11/30/2020] [Indexed: 01/07/2023]
Abstract
An inexpensive, easy to prepare, and label-free electrochemical impedance spectroscopy-based biosensor has been developed for the selective detection of human interleukin 6 (IL-6), interleukin 8 (CXCL8, IL-8), and tumor necrosis factor (TNFα)-potential inflammatory cancer biomarkers. We describe a, so far, newly developed and unexplored method to immobilize antibodies onto a titanium dioxide nanotube (TNT) array by physical adsorption. Immobilization of anti-IL-6, anti-IL-8, and anti-TNFα on TNT and the detection of human IL-6, IL-8, and TNFα were examined using electrochemical impedance spectroscopy (EIS). The impedimetric immunosensor demonstrates good selectivity and high sensitivity against human biomarker analytes and can detect IL-6, IL-8, and TNFα at concentrations as low as 5 pg/mL, equivalent to the standard concentration of these proteins in human blood. The calibration curves evidenced that elaborated biosensors are sensitive to three cytokines within 5 ÷ 2500 pg/mL in the 0.01 M phosphate-buffered saline solution (pH 7.4).
Collapse
Affiliation(s)
- Katarzyna Arkusz
- Department of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Gora, Licealna 9 Street, 65-417 Zielona Gora, Poland;
| | | |
Collapse
|
7
|
Hydrothermal Synthesis of FeOOH and Fe2O3 Modified Self-Organizing Immobilized TiO2 Nanotubes for Photocatalytic Degradation of 1H-Benzotriazole. Catalysts 2020. [DOI: 10.3390/catal10121371] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, titanium dioxide nanotubes were prepared by electrochemical anodization technique and modified with an aqueous solution of FeCl3 using hydrothermal synthesis method to control the amount and distribution of iron compounds on the anatase TiO2 nanotubes. The objective was to synthesize immobilized FeOOH@TiO2 or Fe2O3@TiO2 photocatalysts designed for the flow-through reactor systems; to investigate thermal treatment effect on the photocatalytic efficiency; to determine appropriate Fe-compounds concentration for the maximum photocatalytic activity improvement, and to explain the mechanism responsible for the enhancement. The photocatalysts were tested for the degradation of 1H-benzotriazole in water under UV/solar light irradiation. Up to two times increase in the photocatalytic activity was obtained when TiO2 nanotubes were modified with 0.8 mM Fe. At higher Fe concentrations (8 mM and 80 mM), the photocatalytic activity of the given photocatalysts decreased. To confirm the formation of FeOOH or Fe2O3 species, and to clarify the mechanism of photoactivity, X-ray diffraction (XRD), Raman spectroscopy (RS), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray spectroscopy (EDS) and UV-Vis spectroscopy were used.
Collapse
|
8
|
Highly ordered combined structure of anodic TiO2 nanotubes and TiO2 nanoparticles prepared by a novel route for dye-sensitized solar cells. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2019.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
9
|
Ng S, Sopha H, Zazpe R, Spotz Z, Bijalwan V, Dvorak F, Hromadko L, Prikryl J, Macak JM. TiO 2 ALD Coating of Amorphous TiO 2 Nanotube Layers: Inhibition of the Structural and Morphological Changes Due to Water Annealing. Front Chem 2019; 7:38. [PMID: 30775363 PMCID: PMC6367259 DOI: 10.3389/fchem.2019.00038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/14/2019] [Indexed: 12/02/2022] Open
Abstract
The present work presents a strategy to stabilize amorphous anodic self-organized TiO2 nanotube layers against morphological changes and crystallization upon extensive water soaking. The growth of needle-like nanoparticles was observed on the outer and inner walls of amorphous nanotube layers after extensive water soakings, in line with the literature on water annealing. In contrary, when TiO2 nanotube layers uniformly coated by thin TiO2 using atomic layer deposition (ALD) were soaked in water, the growth rates of needle-like nanoparticles were substantially reduced. We investigated the soaking effects of ALD TiO2 coatings with different thicknesses and deposition temperatures. Sufficiently thick TiO2 coatings (≈8.4 nm) deposited at different ALD process temperatures efficiently hamper the reactions between water and F− ions, maintain the amorphous state, and preserve the original tubular morphology. This work demonstrates the possibility of having robust amorphous 1D TiO2 nanotube layers that are very stable in water. This is very practical for diverse biomedical applications that are accompanied by extensive contact with an aqueous environment.
Collapse
Affiliation(s)
- Siowwoon Ng
- Central European Institute of Technology, Brno University of Technology, Brno, Czechia
| | - Hanna Sopha
- Central European Institute of Technology, Brno University of Technology, Brno, Czechia.,Faculty of Chemical Technology, Center of Materials and Nanotechnologies, University of Pardubice, Pardubice, Czechia
| | - Raul Zazpe
- Central European Institute of Technology, Brno University of Technology, Brno, Czechia.,Faculty of Chemical Technology, Center of Materials and Nanotechnologies, University of Pardubice, Pardubice, Czechia
| | - Zdenek Spotz
- Central European Institute of Technology, Brno University of Technology, Brno, Czechia
| | - Vijay Bijalwan
- Central European Institute of Technology, Brno University of Technology, Brno, Czechia
| | - Filip Dvorak
- Faculty of Chemical Technology, Center of Materials and Nanotechnologies, University of Pardubice, Pardubice, Czechia
| | - Ludek Hromadko
- Central European Institute of Technology, Brno University of Technology, Brno, Czechia.,Faculty of Chemical Technology, Center of Materials and Nanotechnologies, University of Pardubice, Pardubice, Czechia
| | - Jan Prikryl
- Faculty of Chemical Technology, Center of Materials and Nanotechnologies, University of Pardubice, Pardubice, Czechia
| | - Jan M Macak
- Central European Institute of Technology, Brno University of Technology, Brno, Czechia.,Faculty of Chemical Technology, Center of Materials and Nanotechnologies, University of Pardubice, Pardubice, Czechia
| |
Collapse
|
10
|
Zare M, Solaymani S, Shafiekhani A, Kulesza S, Ţălu Ş, Bramowicz M. Evolution of rough-surface geometry and crystalline structures of aligned TiO 2 nanotubes for photoelectrochemical water splitting. Sci Rep 2018; 8:10870. [PMID: 30022150 PMCID: PMC6052034 DOI: 10.1038/s41598-018-29247-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 07/09/2018] [Indexed: 02/07/2023] Open
Abstract
Nowadays, increasing awareness of environment and fossil fuels protection stimulates intensive research on clean and renewable sources of energy. Production of hydrogen from water through solar-driven splitting reactions is one of the most promising approaches in the field of photoelectrochemistry (PEC). In this work we have fabricated well-aligned, highly-ordered, smooth-mouth TiO2 nanotube arrays (TNAs) in a two-step anodization process of titanium foil, which were then used as photoelectrodes for PEC water splitting. It demonstrates for the first time correspondence between non-linear component characteristics of multiscale rough surface and crystalline structure of annealed TNAs measured at various fabrication stages and their photoelectrochemical response. The as-anodized TNAs with isotropic surface (deduced from AFM and SEM images) and largest figure of merit (according to their PEC performance) were annealed at 450 °C in air. Scale-invariant descriptors of the surface structure of the deposits involved: fractal dimension, corner frequency, roughness, size of nanostructures and their dominant habits. Moreover, X-ray diffraction data processed using the Rietveld method confirmed co-existence of various oxides, for example: TiO2 in the form of anatase, TiO and Ti3O5 phases in the TNAs under study pointing that previous well-established mechanisms of the TNA growth were to certain degree incomplete.
Collapse
Affiliation(s)
- Maryam Zare
- School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran, Iran
| | - Shahram Solaymani
- Young Researchers and Elite Club, West Tehran Branch, Islamic Azad University, Tehran, Iran.
| | - Azizollah Shafiekhani
- School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran, Iran
- Physics Department, Alzahra University, Tehran, 1993891167, Iran
| | - Slawomir Kulesza
- University of Warmia and Mazury in Olsztyn, Faculty of Mathematics and Computer Science, Sloneczna 54, 10-710, Olsztyn, Poland
| | - Ştefan Ţălu
- Technical University of Cluj-Napoca, The Directorate of Research, Development and Innovation Management (DMCDI), Constantin Daicoviciu St., no. 15, Cluj-Napoca, 400020, Cluj county, Romania
| | - Miroslaw Bramowicz
- University of Warmia and Mazury in Olsztyn, Faculty of Technical Sciences, Oczapowskiego 11, 10-719, Olsztyn, Poland
| |
Collapse
|
11
|
Song W, Yang C, Svend Le DQ, Zhang Y, Kjems J. Calcium-MicroRNA Complex-Functionalized Nanotubular Implant Surface for Highly Efficient Transfection and Enhanced Osteogenesis of Mesenchymal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7756-7764. [PMID: 29420881 DOI: 10.1021/acsami.7b18289] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Controlling mesenchymal stem cell (MSC) differentiation by RNA interference (RNAi) is a promising approach for next-generation regenerative medicine. However, efficient delivery of RNAi therapeutics is still a limiting factor. In this study, we have developed a simple, biocompatible, and highly effective delivery method of small RNA therapeutics into human MSCs (hMSCs) from an implant surface by calcium ions. First, we demonstrated that simple Ca/siRNA targeting green fluorescent protein (GFP) nanocomplexes were able to efficiently silence GFP in GFP-expressing hMSCs with adequate Ca2+ concentration (>5 mM). In addition, a single transfection could obtain a long-lasting silencing effect for more than 2 weeks. All three of the main endocytosis pathways (clathrin- and caveolin-mediated endocytosis and macropinocytosis) were involved in the internalization of the Ca/siRNA complexes by MSCs, and macropinocytosis plays the most dominant role. Furthermore, the Ca/siRNA complexes could be efficiently loaded onto the titanium implant surface when pretreated with anodization to create a nanotube (NT) layer. Because of the hydrophilic property of the NT surface, the Ca/siRNA was quickly loaded (less than 4 h) with high efficiency (nearly 100%), forming an even amorphous coating. The Ca/siRNA-coated NT surface showed an initial burst release of 80% of the siRNA complexes over 2 h, which is adequate to achieve robust gene silencing of attached hMSCs. To demonstrate the therapeutic potential of our Ca/siRNA coating technology, Ca/antimiR-138 complexes were loaded on to the NT surface, which strongly enhanced the osteogenic differentiation of hMSCs. In conclusion, our findings suggest that Ca2+ is an effective and biocompatible carrier to deliver small RNA therapeutics into hMSCs, both in solution and from functionalized surfaces, which provides a novel approach to control the MSC differentiation and tissue regeneration.
Collapse
Affiliation(s)
- Wen Song
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology , The Fourth Military Medical University , Xi'an 710032 , China
| | | | | | - Yumei Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology , The Fourth Military Medical University , Xi'an 710032 , China
| | | |
Collapse
|
12
|
Wang X, Zhang D, Xiang Q, Zhong Z, Liao Y. Review of Water-Assisted Crystallization for TiO 2 Nanotubes. NANO-MICRO LETTERS 2018; 10:77. [PMID: 30574511 PMCID: PMC6244556 DOI: 10.1007/s40820-018-0230-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 10/29/2018] [Indexed: 05/13/2023]
Abstract
TiO2 nanotubes (TNTs) have drawn tremendous attention owing to their unique architectural and physical properties. Anodizing of titanium foil has proven to be the most efficient method to fabricate well-aligned TNTs, which, however, usually produces amorphous TNTs and needs further thermal annealing. Recently, a water-assisted crystallization strategy has been proposed and investigated by both science and engineering communities. This method is very efficient and energy saving, and it circumvents the drawbacks of thermal sintering approach. In this paper, we review the recent research progress in this kind of low-temperature crystallization approach. Here, various synthetic methods are summarized, and the mechanisms of the amorphous-crystalline transformation are analyzed. The fundamental properties and applications of the low-temperature products are also discussed. Furthermore, it is proved that the water-assisted crystallization approach is not only applicable to TNTs but also to crystallizing other metal oxides.
Collapse
Affiliation(s)
- Xiaoyi Wang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 611731 People’s Republic of China
| | - Dainan Zhang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 611731 People’s Republic of China
| | - Quanjun Xiang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 611731 People’s Republic of China
| | - Zhiyong Zhong
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 611731 People’s Republic of China
| | - Yulong Liao
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 611731 People’s Republic of China
- Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu, 611731 People’s Republic of China
| |
Collapse
|
13
|
Titania nanotube powders obtained by rapid breakdown anodization in perchloric acid electrolytes. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|