Morphology of living cells cultured on nanowire arrays with varying nanowire densities and diameters

  • Zhen Li
  • Henrik Persson
  • Karl Adolfsson
  • Stina Oredsson
  • Christelle N. Prinz
Research Paper THEMATIC ISSUE: Nanotechnology and nanomedicine
  • 3 Downloads

Abstract

Vertical nanowire arrays are increasingly investigated for their applications in steering cell behavior. The geometry of the array is an important parameter, which influences the morphology and adhesion of cells. Here, we investigate the effects of array geometry on the morphology of MCF7 cancer cells and MCF10A normal-like epithelial cells. Different gallium phosphide nanowire array-geometries were produced by varying the nanowire density and diameter. Our results show that the cell size is smaller on nanowires compared to flat gallium phosphide. The cell area decreases with increasing the nanowire density on the substrate. We observed an effect of the nanowire diameter on MCF10A cells, with a decreased cell area on 40 nm diameter nanowires, compared to 60 and 80 nm diameter nanowires in high-density arrays. The focal adhesion morphology depends on the extent to which cells are contacting the substrate. For low nanowire densities and diameters, cells are lying on the substrate and we observed large focal adhesions at the cell edges. In contrast, for high nanowire densities and diameters, cells are lying on top of the nanowires and we observed point-like focal adhesions distributed over the whole cell. Our results constitute a step towards the ability to fine-tune cell behavior on nanowire arrays.

Keywords

nanowires cell morphology diameter density aspect ratio 

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Notes

Acknowledgements

This work was supported by the Swedish Research Council (VR), NanoLund, the Crafoord Foundation, the China Scholarship Council (CSC) and by a Donation from Carolina LePrince with the “Kalenderflickorna” and Associated Sponsors. The nanowire array fabrication was performed at Lund Nano Lab.

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Zhen Li
    • 1
    • 2
  • Henrik Persson
    • 1
    • 2
  • Karl Adolfsson
    • 1
    • 2
  • Stina Oredsson
    • 3
  • Christelle N. Prinz
    • 1
    • 2
  1. 1.Division of Solid State PhysicsLund UniversityLundSweden
  2. 2.NanoLundLund UniversitySweden
  3. 3.Department of BiologyLundSweden

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