Magnetically Assisted Electrodeposition of Aligned Collagen Coatings

Zhuang, Jingjing; Lin, Suya; Dong, Lingqing; Cheng, Kui; Weng, Wenjian

doi:10.1021/acsbiomaterials.7b01038

Cited by 19 publications

(25 citation statements)

References 46 publications

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“…They can be used in situ as scaffolds that topographically guide cell growth, e.g. of neurites [35] or mesenchymal stem cells [36] growing significantly farther and better aligned on such aligned fibers than on a pure hydrogel. On the other hand, tensile strength and thermal conductivity of such nanofiber mats or corresponding nano-composites were found to be significantly enhanced due to fiber alignment [37].…”

Section: Methodsmentioning

confidence: 99%

“…On the other hand, such aligned magnetic nanofibers were shown to have high longitudinal elasto-magnetic strain and transverse magnetic deflection, making them useful for microelectronic or biomedical applications in which deformations occur or a magnetic anisotropy is necessary [26]. They can be used in situ as scaffolds that topographically guide cell growth, e.g., of neurites [35] or mesenchymal stem cells [36] growing significantly farther and better aligned on such aligned fibers than on a pure hydrogel. On the other hand, tensile strength and thermal conductivity of such nanofiber mats or corresponding nano-composites were found to be significantly enhanced due to fiber alignment [37].…”

Section: Introductionmentioning

confidence: 99%

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Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas

et al. 2019

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Electrospinning can be used to create nanofibers from diverse polymers in which also other materials can be embedded. Inclusion of magnetic nanoparticles, for example, results in preparation of magnetic nanofibers which are usually isotropically distributed on the substrate. One method to create a preferred direction is using a spinning cylinder as the substrate, which is not always possible, especially in commercial electrospinning machines. Here, another simple technique to partly align magnetic nanofibers is investigated. Since electrospinning works in a strong electric field and the fibers thus carry charges when landing on the substrate, using partly conductive substrates leads to a current flow through the conductive parts of the substrate which, according to Ampère’s right-hand grip rule, creates a magnetic field around it. We observed that this magnetic field, on the other hand, can partly align magnetic nanofibers perpendicular to the borders of the current flow conductor. We report on the first observations of electrospinning magnetic nanofibers on partly conductive substrates with some of the conductive areas additionally being grounded, resulting in partly oriented magnetic nanofibers.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas

et al. 2019

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“…Formation of fibrils with periodic D ‐spacing was not disturbed by the magnetic field, as shown by SEM and AFM . Weaker magnetic fields were also able to induce alignment of fibrils, provided that magnetic particles (e.g., iron oxide nanoparticles) were embedded in the collagen matrix . However, the presence of these extra particles could hamper the mineralization process.…”

Section: Biomineralization‐inspired Materialsmentioning

confidence: 89%

Biomineralization‐Inspired Material Design for Bone Regeneration

Pereira

Habibović

2018

Adv Healthcare Materials

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Synthetic substitutes of bone grafts, such as calcium phosphate–based ceramics, have shown some good clinical successes in the regeneration of large bone defects and are currently extensively used. In the past decade, the field of biomineralization has delivered important new fundamental knowledge and techniques to better understand this fascinating phenomenon. This knowledge is also applied in the field of biomaterials, with the aim of bringing the composition and structure, and hence the performance, of synthetic bone graft substitutes even closer to those of the extracellular matrix of bone. The purpose of this progress report is to critically review advances in mimicking the extracellular matrix of bone as a strategy for development of new materials for bone regeneration. Lab‐made biomimicking or bioinspired materials are discussed against the background of the natural extracellular matrix, starting from basic organic and inorganic components, and progressing into the building block of bone, the mineralized collagen fibril, and finally larger, 2D and 3D constructs. Moreover, bioactivity studies on state‐of‐the‐art biomimicking materials are discussed. By addressing these different topics, an overview is given of how far the field has advanced toward a true bone‐mimicking material, and some suggestions are offered for bridging current knowledge and technical gaps.

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“…Co-deposit various components (ceramics, nanoparticles, proteins) [42,[149][150][151][152] • Chitosan derivatives (3,4-dihydroxybenzaldehyde) [153] Co-deposit with gelatin for conformal coatings [96], osteoblast adhesion [154] and acetylsalicylic acid incorporation [155] • Collagen Couple migration and assembly with calcium phosphate mineralization [156,157] Anodic neutralization • Alginic acid [142] Deposition through anodic neutralization…”

Section: Chitosanmentioning

confidence: 99%

Electrobiofabrication: electrically based fabrication with biologically derived materials

Kim

et al. 2019

Biofabrication

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While conventional material fabrication methods focus on form and strength to achieve function, the fabrication of material systems for emerging life science applications will need to satisfy a more subtle set of requirements. A common goal for biofabrication is to recapitulate complex biological contexts (e.g. tissue) for applications that range from animal-on-a-chip to regenerative medicine. In these cases, the material systems will need to: (i) present appropriate surface functionalities over a hierarchy of length scales (e.g. molecular features that enable cell adhesion and topographical features that guide differentiation); (ii) provide a suite of mechanobiological cues that promote the emergence of native-like tissue form and function; and (iii) organize structure to control cellular ingress and molecular transport, to enable the development of an interconnected cellular community that is engaged in cell signaling. And these requirements are not likely to be static but will vary over time and space, which will require capabilities of the material systems to dynamically respond, adapt, heal and reconfigure. Here, we review recent advances in the use of electrically based fabrication methods to build material systems from biological macromolecules (e.g. chitosan, alginate, collagen and silk). Electrical signals are especially convenient for fabrication because they can be controllably imposed to promote the electrophoresis, alignment, self-assembly and functionalization of macromolecules to generate

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Magnetically Assisted Electrodeposition of Aligned Collagen Coatings

Cited by 19 publications

References 46 publications

Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas

Orientation of Electrospun Magnetic Nanofibers Near Conductive Areas

Biomineralization‐Inspired Material Design for Bone Regeneration

Electrobiofabrication: electrically based fabrication with biologically derived materials

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