Micropatterning of a nanoporous alumina membrane with poly(ethylene glycol) hydrogel to create cellular micropatterns on nanotopographic substrates

Lee, Hyun Jong; Kim, Dae Nyun; Park, Saemi; Lee, Yeol; Koh, Won Gun

doi:10.1016/j.actbio.2010.11.006

Cited by 37 publications

(25 citation statements)

References 48 publications

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“…Nanowire-AAO composite polarizers are attractive devices for infrared wavelengths. Recently anodic alumina also finds applications in electronics and optoelectronics [158,249,53], photonics [161,162,39,42,305], integration of living cells with electronics [76,77,20], cells culture and tissue engineering [252,130,109], and drug-releasing platforms [253].…”

Section: Applications Of Anodic Aluminum Oxidementioning

confidence: 99%

Nanoporous Anodic Aluminum Oxide: Fabrication, Characterization, and Applications

Stępniowski

Bojar

2015

Handbook of Nanoelectrochemistry

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Anodic aluminum oxide (AAO) consists of parallel pores arranged in a honeycomb-like array. Since a two-step self-organized approach in anodic alumina fabrication was invented, tremendous attention was paid to this material. Structural features of anodic alumina, like pore diameter, interpore distance, and nanoporous oxide thickness, can be fully controlled by operating conditions, including type, concentration and temperature of the electrolyte, applied voltage, and duration of the anodization process. Moreover, these operating conditions have also a major impact on the nanoporous array arrangement. Quantitative arrangement analysis methods employing fast Fourier transforms have been developed to assess the nanopores' arrangement. The most frequent application of the anodic aluminum oxide is a template-assisted fabrication of nanostructures. Templates made of the AAO are being successfully applied in fabrication of nanowires, nanotubes, and nanodots by using diversity of techniques, including electrochemical deposition, physical and chemical vapor deposition, sol-gel techniques, etc. Due to the size of obtained nanostructures, magnetic, electric, piezoelectric, luminescent, and catalytic properties of the deposited materials can be significantly improved. Thus, control of the nanopores' structural features and arrangement is crucial for AAO applications in nanotechnology.

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Section: Applications Of Anodic Aluminum Oxidementioning

confidence: 99%

Nanoporous Anodic Aluminum Oxide: Fabrication, Characterization, and Applications

Stępniowski

Bojar

2015

Handbook of Nanoelectrochemistry

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“…Increasing the surface roughness of implants enhances their anchorage on the bone and promotes the proliferation and differentiation of progenitor osteocells or osteoblasts; therefore, favorable cell morphology and increase in surface roughness are expected, thereby strengthening implant anchorage [2,[5][6][7][8][9][10][11]. Roughness is a crucial indicator for biomaterials, but Kim et al [19,20] suggested that greater degree of roughness is not always preferable.…”

Section: Surface Roughnessmentioning

confidence: 99%

“…Numerous studies have focused on using various surface treatments, such as altering the surface hydrophobicity and hydrophilicity, surface charge, roughness, and microstructure, to modify the physicochemical surface properties of dental implants [2,[4][5][6]. Alternatively, biochemical modifications can be used to graft specific proteins, such as collagen, peptides, or genetically modified carriers, on dental implant surfaces by bioactive ceramic coatings, silane treatments, and protein/peptide coatings to reduce the time required for osseointegration, enhance the initial stability of dental implant, and increase long-term success rate [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ti surface treatments with silane and arginylglycylaspartic acid peptide on bone cell progenitors

2014

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Achieving optimal aesthetic appearance is a major objective in dental implant design, and the interaction between the materials and the bone cell progenitors is an important factor in the attainment of this objective. In this study, a novel concept was evaluated by varying the surface modifications on titanium (Ti). Different levels of roughness can be attained by machine grinding (M), sand blasting, and acid etching (SLA) of the samples. The behavior of bone cell progenitors (D1) on the surfaces of Ti disks with different surface modifications was investigated. The surfaces of M or SLA disks were silanized (MS or SLAS group) through treatment with silane/Gly-Arg-Gly-Asp-Ser (GRGDS) peptide (MSP or SLASP group) and anchored particles of tetracalcium phosphate (TTCP) on the specimen surfaces (SLA-TTCP group). Physicochemical analysis was performed by metallographic microscopy, scanning electron microscopy, and contact angle analysis. The proliferation and the quantitative alkaline phosphatase (ALP) production of D1 cells on the surface of different sample groups were determined. The SLASP group had a significantly larger D1 cell proliferation than the other groups after 4 and 7 d of incubation (p < 0.05). ALP expression was a very early marker of differentiation, and was the first indication of the increasing number of cells at 7 d of culture. Among the groups in the M substrate series (i.e., M, MS, and MSP) and in the SLA series (i.e., SLA, SLAS, and SLASP), the MSP and SLASP specimens exhibited superior differentiation abilities on respective cultures until day 7 and day 10. A high number of hydrophilic surfaces dominated cell proliferation in the early stage of cell attachment. However, factors affecting the pore structure and the surface morphology can improve cell proliferation and differentiation. According to analyses of proliferation and ALP expression of bone cell progenitors D1, the original SLA implant surface can be improved with surface treatment methods, such as silanization and treatment with graft GRGDS pentapeptide. These methods can be potential candidates for the promotion of bone growth.

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“…Nowadays, organosilane precursors bearing functional groups such as amino [12][13][14][15][16][17][18][19][20][21][22], thiol, carboxyl, phosphate, vinyl [23][24][25], cyanide [26], phenyl [24,27] or sulphhydryl groups are readily available. Despite the wide variety of silane precursors available for surface modification, the majority of studies have employed aminosilanes, in particular 3-aminopropyltriethoxysilane (APTES) [11][12][13][14][15][16][17][18][19][20][21][22]. Nevertheless, the 3-chloropropyltriethoxysilane (CPTES) is also proposed by other authors [2,4,10].…”

Section: Introductionmentioning

confidence: 99%

Study on the use of 3‐aminopropyltriethoxysilane and 3‐chloropropyltriethoxysilane to surface biochemical modification of a novel low elastic modulus Ti–Nb–Hf alloy

et al. 2014

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A biocompatible new titanium alloy Ti–16Hf–25Nb with low elastic modulus (45 GPa) and the use of short bioadhesive peptides derived from the extracellular matrix have been studied. In terms of cell adhesion, a comparative study with mixtures of short peptides as RGD (Arg‐Gly‐Asp)/PHSRN (Pro‐His‐Ser‐Arg‐Asn) and RGD (Arg‐Gly‐Asp)/FHRRIKA (Phe‐His‐Arg‐Arg‐Ile‐Lys‐Ala) have been carried out with rat mesenchymal cells. The effect of these mixtures of short peptides have already been studied but there are no comparative studies between them. Despite the wide variety of silane precursors available for surface modification in pure titanium, the majority of studies have used aminosilanes, in particular 3‐minopropyltriethoxysilane (APTES). Nevertheless, the 3‐chloropropyltriethoxysilane (CPTES) is, recently, proposed by other authors. Unlike APTES, CPTES does not require an activation step and offers the potential to directly bind the nucleophilic groups present on the biomolecule (e.g., amines or thiols). Since the chemical surface composition of this new alloy could be different to that pure titanium, both organosilanes have been compared and characterized by means of a complete surface characterization using contact angle goniometry and X‐ray photoelectron spectroscopy. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 103B:495–502, 2015.

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Micropatterning of a nanoporous alumina membrane with poly(ethylene glycol) hydrogel to create cellular micropatterns on nanotopographic substrates

Cited by 37 publications

References 48 publications

Nanoporous Anodic Aluminum Oxide: Fabrication, Characterization, and Applications

Nanoporous Anodic Aluminum Oxide: Fabrication, Characterization, and Applications

Effects of Ti surface treatments with silane and arginylglycylaspartic acid peptide on bone cell progenitors

Study on the use of 3‐aminopropyltriethoxysilane and 3‐chloropropyltriethoxysilane to surface biochemical modification of a novel low elastic modulus Ti–Nb–Hf alloy

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