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Endothelial cell interactions with native surfaces.

J Hoch1, B E Jarrell, T Schneider

  • 1Department of Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania 19107.

Annals of Vascular Surgery
|April 1, 1989
PubMed
Summary
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Researchers studied endothelial cell interactions with natural surfaces to find ideal conditions for cell attachment. Surfaces rich in basement membrane collagen, like human amnion and injured arteries, promote rapid endothelial cell coverage, suggesting potential for biomimetic materials.

Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Vascular Biology

Background:

  • Native blood vessels provide an ideal surface for endothelial cells.
  • Understanding endothelial cell interactions with natural surfaces is key to developing effective biomaterials.

Purpose of the Study:

  • To evaluate endothelial cell attachment and spreading on various natural surfaces.
  • To establish a benchmark for endothelialization on natural substrates.

Main Methods:

  • Examined endothelial cell interactions with human amnion, superficially-injured human arteries, and tanned bovine carotid arteries.
  • Utilized electron microscopy to assess cell spreading and surface coverage.
  • Quantified endothelial cell coverage over time (1-2 hours).

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Main Results:

  • Human amnion and injured arteries, rich in basement membrane collagen, showed rapid endothelial cell attachment and spreading, achieving near-confluent monolayers within 1-2 hours.
  • Tanned bovine carotid arteries, composed of interstitial collagen, demonstrated slower but significant endothelial cell coverage.
  • Electron microscopy confirmed excellent endothelial cell spreading with minimal exposed underlying basement membrane on tested surfaces.

Conclusions:

  • Natural surfaces, particularly those with basement membrane collagen, facilitate rapid endothelialization.
  • These findings suggest that synthetic polymeric surfaces mimicking injured native surfaces could achieve rapid endothelialization within minutes to hours.
  • This has implications for developing advanced vascular grafts and tissue engineering scaffolds.