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Microwrinkled conducting polymer interface for anisotropic multicellular alignment.

Francesco Greco1, Toshinori Fujie, Leonardo Ricotti

  • 1Center for MicroBioRobotics @SSSA, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy. francesco.greco@iit.it

ACS Applied Materials & Interfaces
|January 1, 2013
PubMed
Summary
This summary is machine-generated.

Researchers created tunable conductive nanowrinkles on polymer surfaces for cell alignment and electrical stimulation. This novel method advances smart scaffolds for bioelectronic devices and tissue engineering applications.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Cell Biology

Background:

  • Controlled topographical cues on surfaces are essential for smart scaffolds and biointerfaces in cell culture.
  • Conducting polymers are of increasing interest for biocompatible, conductive biointerfaces and bioelectronic devices.

Purpose of the Study:

  • To present a novel method for creating anisotropic micro- and nanoscale topographical cues on conducting polymer surfaces.
  • To investigate the use of these surfaces as smart scaffolds for cell alignment and electrical stimulation.

Main Methods:

  • Fabrication of micro/nanowrinkles on conducting polymer films via heat-shrinking of a thermo-retractable substrate.
  • Tuning topography by controlling conductive film thickness.
  • Patterning conductive properties of wrinkled substrates.
  • Evaluating cell adhesion, proliferation, and alignment (C2C12 cells) on different topographies.
  • Assessing myotube formation and maturation, including co-culture with fibroblasts.

Main Results:

  • Successfully produced tunable micro and nanowrinkled structures on conducting polymers.
  • Demonstrated preferential anisotropic alignment of C2C12 skeletal muscle cells along the wrinkles.
  • Observed enhanced aligned and mature myotube formation, particularly with co-culture.

Conclusions:

  • The developed method offers a versatile approach to create tunable conductive nanowrinkled surfaces.
  • These surfaces act as effective smart scaffolds, promoting functional cell alignment and myogenesis.
  • The combination of living cells and conductive nanowrinkles holds promise for innovative biomedical devices and tissue engineering.