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Related Experiment Video

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Control of Cell Adhesion using Hydrogel Patterning Techniques for Applications in Traction Force Microscopy
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How to image cell adhesion on soft polymers?

Silke Seyock1, Vanessa Maybeck1, Andreas Offenhäusser1

  • 1Institute of Complex Systems (ICS-8/PGI-8), Forschungszentrum Jülich, 52428 Jülich, Germany.

Micron (Oxford, England : 1993)
|November 21, 2016
PubMed
Summary
This summary is machine-generated.

We developed a method to visualize neuronal cell adhesion on soft implant polymers like PDMS and Ecoflex. Coating polymers with iridium improved cell visualization for implant electrode applications.

Keywords:
Cell interfaceElastomersFocused ion beamPDMS

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Materials Science

Background:

  • Soft, non-conducting polymers are candidates for medical implants, but visualizing cell adhesion on them is challenging.
  • Understanding cell adhesion is crucial for developing effective implantable devices.

Purpose of the Study:

  • To present a novel method for investigating neuronal cell adhesion on soft, non-conducting polymer materials.
  • To optimize sample preparation for electron microscopy of cells cultured on elastomers.

Main Methods:

  • Neuronal cells were cultured on polydimethylsiloxane (PDMS) and Ecoflex® elastomers.
  • Samples were prepared for electron microscopy using osmium tetroxide (OsO4) and uranyl acetate (UrAc) staining.
  • A thin iridium coating was applied to the polymer surface prior to cell culture to enhance visualization.

Main Results:

  • The iridium coating significantly improved contrast and visualization of neuronal cell adhesion on soft polymers.
  • Successful visualization of cell adhesion was achieved on both PDMS and Ecoflex®.
  • The method allows for detailed examination of cell-polymer interactions.

Conclusions:

  • The developed method enables effective investigation of cell adhesion on soft polymer implant materials.
  • Iridium coating is a key step for high-quality electron microscopy imaging of cells on these substrates.
  • This technique supports the development of advanced implantable electrodes using soft polymer supports.