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Publication Detail
The effect of adherens junction components on keratinocyte adhesion in vitro: potential implications for sealing the skin-implant interface of intraosseous transcutaneous amputation prostheses.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Pendegrass CJ, Tucker B, Patel S, Dowling R, Blunn GW
  • Publication date:
    12/2012
  • Pagination:
    3463, 3471
  • Journal:
    J Biomed Mater Res A
  • Volume:
    100
  • Issue:
    12
  • Country:
    United States
  • Language:
    eng
  • Keywords:
    Adherens Junctions, Amputation Stumps, Animals, Cadherins, Cell Adhesion, Keratinocytes, Mice, Prostheses and Implants, Skin, Time Factors, Vinculin, beta Catenin
Abstract
Amputation places a significant burden on healthcare systems worldwide as patients suffer life-long complications associated with the stump-socket interface. Skin penetrating, osseointegrated implants like intraosseous transcutaneous amputation prostheses, could overcome this, however, they rely on the formation and maintenance of an infection-free seal at the skin-implant interface. Epithelial cell migration around transcutaneous implants creates downgrowth, which leads to infection and implant failure. Epithelial cells form cell-cell attachments via adherens junctions and desmosomes that prevent cell migration via contact inhibition. If epithelial cells formed cell-cell attachments with an implant surface, it could facilitate stronger cell attachment and prevent downgrowth. In adherens junctions, E-cadherin is essential in homotypic cell attachment. In this study, we have demonstrated that cell-cell adherens junctions can be formed on substrates adsorbed with E-cadherin. We have assessed the effects of two E-cadherin peptides and determined an optimal concentration for increasing cell attachment via adherens junctions. We have demonstrated that adsorption of 15 μg/mL of the full extracellular domain of E-cadherin to titanium alloy significantly increases metabolic activity, cell area, and attachment of murine keratinocytes in vitro, with a fourfold increase in attachment via adherens junctions at 24, 48, and 72 h.
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Inst of Orthopaedics & Musculosk Sci
Inst of Orthopaedics & Musculosk Sci
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