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Related Experiment Video

Updated: Feb 9, 2026

A Simplified Model for Heterotopic Heart Valve Transplantation in Rodents
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Bioengineered self-seeding heart valves.

James E Jordan1, J Koudy Williams, Sang-Jin Lee

  • 1Department of Cardiothoracic Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA.

The Journal of Thoracic and Cardiovascular Surgery
|November 4, 2011
PubMed
Summary
This summary is machine-generated.

Engineered heart valves conjugated with CD133 antibodies showed rapid endothelialization and improved biomechanical properties in vivo. This self-seeding approach offers a faster, clinically relevant alternative for heart valve replacement surgery.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cardiovascular Surgery

Background:

  • Current heart valve prostheses (mechanical and biological) have significant limitations.
  • Bioengineering cell-seeded heart valve scaffolds is complex and time-consuming.

Purpose of the Study:

  • To engineer self-seeding heart valves with reduced preparation time.
  • To achieve rapid in vivo maturation of engineered heart valves.

Main Methods:

  • Decellularized porcine pulmonary valves were prepared as unconjugated, cell-seeded, or CD133 antibody-conjugated constructs.
  • Constructs were implanted into sheep pulmonary positions.
  • Evaluated cell/matrix content and biomechanical properties at 1 and 3 months post-implantation.

Main Results:

  • Conjugated valves demonstrated complete endothelialization within 1 month.
  • Increased interstitial cells, matrix proteins, and improved biomechanical strength in conjugated valves.
  • Unconjugated and cell-seeded valves showed limited cellular infiltration.

Conclusions:

  • CD133 antibody conjugation facilitates rapid, in vivo self-seeding and maturation of engineered heart valves.
  • This approach offers a quicker, potentially more effective solution for heart valve replacement.