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Transparent titanium dioxide nanotubes: Processing, characterization, and application in establishing cellular

Jevin G Meyerink1, Divya Kota2, Scott T Wood2

  • 1Biomedical Engineering Program, South Dakota School of Mines & Technology, 501 E St Joseph St, BioSNTR Rapid City, SD 57701, United States.

Acta Biomaterialia
|September 3, 2018
PubMed
Summary

We developed transparent titanium dioxide nanotubes for live-cell imaging, enabling dynamic study of cellular responses to implant surfaces. This platform reveals how nanotube features influence cell behavior, advancing implant material design.

Keywords:
Cytoskeletal dynamicsEpifluorescenceFocal adhesionLive-cell microscopyTitanium dioxideTransparent nanotubes

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Nanotechnology

Background:

  • Titanium dioxide (TiO2) nanotubes enhance osteogenic surface treatments for implants, but mechanisms are unclear due to imaging limitations.
  • Existing cellular imaging methods struggle with opaque implant substrates, hindering understanding of TiO2 nanotube effects on cell behavior.

Purpose of the Study:

  • To develop transparent TiO2 nanotube (NT) imaging platforms for dynamic live-cell investigations.
  • To define the relationship between TiO2 NT physical characteristics and cellular responses.
  • To overcome limitations of opaque substrates in studying cell-implant interactions.

Main Methods:

  • Fabrication of transparent TiO2 NT arrays with controlled diameters (56-116 nm).
  • Utilizing fluorescently tagged vinculin and actin in osteoblasts (MC3T3-E1 cells).
  • High-resolution fluorescent microscopy for real-time observation of live-cell interactions with TiO2 NT substrates.

Main Results:

  • Successful production of transparent TiO2 NTs with tailorable diameters.
  • Demonstrated real-time, high-resolution imaging of osteoblast interactions with TiO2 NTs.
  • Visualized focal adhesion protein vinculin and actin cytoskeletal dynamics.

Conclusions:

  • The developed transparent TiO2 NT platform enables unprecedented dynamic investigation of cell-nanostructure interactions.
  • This technology is crucial for elucidating the mechanisms underlying TiO2 nanotube-mediated cellular responses.
  • The platform holds significant potential for optimizing nanostructured implant surface designs for improved osseointegration.