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Updated: Jun 2, 2026

Elastomeric PGS Scaffolds in Arterial Tissue Engineering
08:35

Elastomeric PGS Scaffolds in Arterial Tissue Engineering

Published on: April 8, 2011

Elastomeric PGS scaffolds in arterial tissue engineering.

Kee-Won Lee1, Yadong Wang

  • 1Department of Bioengineering, University of Pittsburgh, USA.

Journal of Visualized Experiments : Jove
|April 21, 2011
PubMed
Summary

Tissue engineering offers promising small-diameter arterial grafts. Elastomeric scaffolds combined with mechanical conditioning enhanced cell orientation and extracellular matrix production for improved arterial tissue engineering.

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Cardiovascular Research

Background:

  • Cardiovascular disease, particularly coronary artery disease, is a leading cause of mortality, exacerbated by aging and obesity.
  • Current arterial grafts face limitations in small-diameter applications (<6 mm) due to availability, thrombosis, compliance mismatch, and intimal hyperplasia.
  • Tissue engineering aims to create compliant, non-thrombogenic small-diameter arterial constructs.

Purpose of the Study:

  • To introduce a fabrication technique for porous tubular scaffolds using an elastomeric biomaterial.
  • To investigate the effect of dynamic mechanical conditioning on vascular cells within these scaffolds for arterial tissue engineering.
  • To address limitations of low elastin production and compliance in existing engineered arterial grafts.

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Elastomeric PGS Scaffolds in Arterial Tissue Engineering
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Elastomeric PGS Scaffolds in Arterial Tissue Engineering

Published on: April 8, 2011

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Main Methods:

  • Fabrication of porous tubular scaffolds using a biodegradable elastomer, poly (glycerol sebacate) (PGS), via the salt fusion method.
  • Seeding of adult primary baboon smooth muscle cells (SMCs) onto the lumen of PGS scaffolds.
  • Culture of seeded scaffolds in a custom-designed pulsatile flow bioreactor for 3 weeks.

Main Results:

  • PGS scaffolds exhibited consistent thickness with randomly distributed macro- and micro-pores.
  • Mechanical conditioning via pulsatile flow promoted SMC orientation along the scaffold axis.
  • Enhanced extracellular matrix (ECM) production was observed in SMCs cultured under pulsatile flow conditions.

Conclusions:

  • Elastomeric scaffolds, specifically PGS, are suitable for fabricating porous tubular structures for arterial tissue engineering.
  • Dynamic mechanical conditioning in a pulsatile flow bioreactor significantly improves cellular organization and ECM synthesis.
  • This combined approach of elastomeric scaffolds and mechanical conditioning shows promise for developing functional small-diameter arterial grafts.