Cell responses to metallic nanostructure arrays with complex geometries

Biomaterials. 2014 Nov;35(34):9363-71. doi: 10.1016/j.biomaterials.2014.07.022. Epub 2014 Aug 11.


Metallic nanopillar/nanowires are emerging as promising platforms for biological applications, as they allow for the direct characterization and regulation of cell function. Herein we study the response of cells to a versatile nanopillar platform. Nanopillar arrays of various shape, size, and spacing and different nanopillar-substrate interfacial strengths were fabricated and interfaced with fibroblasts and several unique cell-nanopillar interactions were observed using high resolution scanning electron microscopy. Nanopillar penetration, engulfment, tilting, lift off and membrane thinning, were observed by manipulating nanopillar material, size, shape and spacing. These unique cell responses to various nanostructures can be employed for a wide range of applications including the design of highly sensitive nano-electrodes for single-cell probing.

Keywords: Cell adhesion; Mechanotransduction; Nanopillar; Nanotopography sensing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Electrodes
  • Fibroblasts / cytology*
  • Mice
  • Microscopy, Electron, Scanning
  • Nanostructures / chemistry*
  • Surface Properties
  • Swiss 3T3 Cells
  • Tissue Array Analysis / methods*