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Cell behavior on surface modified polydimethylsiloxane (PDMS).

Morgan M Stanton1, Johanna M Rankenberg, Byung-Wook Park

  • 1Worcester Polytechnic Institute, Department of Chemistry and Biochemistry, 100 Institute Road, Worcester, MA 01609, USA.

Macromolecular Bioscience
|March 7, 2014
PubMed
Summary
This summary is machine-generated.

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This study developed a micro-patterned, rough polydimethylsiloxane (PDMS) surface to guide cell growth. The engineered surface promotes cell alignment and alters gene expression for complex tissue culture applications.

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Cell Biology

Background:

  • Designing complex tissue culture systems necessitates precise control over cell alignment and extracellular matrix (ECM) interactions.
  • Current methods often lack the topographical and chemical cues required for directed cellular behavior.

Purpose of the Study:

  • To develop a novel micro-patterned and micro-topographical surface using polydimethylsiloxane (PDMS) to control human fibroblast behavior.
  • To investigate the impact of surface roughness and fibronectin (FN) patterning on cell morphology, alignment, and gene expression.

Main Methods:

  • Fabrication of a PDMS substrate with micro-patterned lines of fibronectin (FN) and bovine serum albumin (BSA).
  • Introduction of micro-roughness to the PDMS surface topography.
Keywords:
biomaterialsmicrostructuremorphologyproteinssurfaces

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  • Culture of human fibroblasts on both flat and micro-rough patterned surfaces for comparative analysis.

    • Main Results:

    • Human fibroblasts cultured on the rough, patterned PDMS exhibited aligned growth and altered morphology compared to cells on a flat surface.
    • The micro-rough PDMS topography significantly reduced fibroblast cell area.
    • Upregulation of several ECM-related genes by two-fold was observed on the rough PDMS compared to the flat PDMS.

    Conclusions:

    • A simple surface engineering approach can create advanced surface architectures for tissue engineering scaffolds.
    • Micro-roughness and chemical patterning on PDMS surfaces effectively control cell-surface interactions, influencing cell alignment, morphology, and gene expression.
    • This technology offers a method for designing and controlling the cell-surface interface in engineered tissues.