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Related Experiment Video

Updated: Aug 2, 2025

Autologous Endothelial Progenitor Cell-Seeding Technology and Biocompatibility Testing For Cardiovascular Devices in Large Animal Model
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Personalized tissue-engineered veins - long term safety, functionality and cellular transcriptome analysis in large

Klas Österberg1, Yalda Bogestål2, Lachmi Jenndahl3

  • 1Sahlgrenska Academy, Institution of Medicine, Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Blå Stråket 5 B, 41345 Gothenburg, Sweden.

Biomaterials Science
|April 20, 2023
PubMed
Summary
This summary is machine-generated.

Personalized tissue engineered veins (P-TEV) show promise as a safe and functional alternative to traditional vascular grafts. This advanced therapy medicinal product demonstrated successful recellularization and patency in large animal models.

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Vascular Surgery

Background:

  • Tissue engineering offers a novel approach for creating advanced therapy medicinal products (ATMPs).
  • Current vascular grafts, including autologous and synthetic options, have limitations in reconstructive vein surgery.
  • Personalized tissue engineered veins (P-TEV) are proposed as an improved alternative.

Purpose of the Study:

  • To evaluate the efficacy and safety of personalized tissue engineered veins (P-TEV) as vascular grafts.
  • To test the hypothesis that individualization via autologous blood reconditioning enhances graft performance.
  • To assess the potential of P-TEV as a clinical transplant graft.

Main Methods:

  • Development of personalized tissue engineered veins (P-TEV) using decellularized allogenic grafts reconditioned with autologous blood.
  • Transplantation of P-TEVs into the vena cava of a porcine model.
  • Long-term analysis of graft patency, recellularization, and revascularization.
  • Gene expression profiling (qPCR and sequencing) to compare P-TEV cells with native vena cava cells.

Main Results:

  • All transplanted P-TEVs remained fully patent after 6, 12, and 14 months.
  • Successful recellularization and revascularization of the engineered tissue were observed.
  • Gene expression analysis confirmed high similarity between cells from P-TEV and native vena cava cells one year post-transplantation.

Conclusions:

  • Personalized tissue engineered veins (P-TEV) are functional and safe in large animal models.
  • The P-TEV demonstrated successful integration and cellular similarity to native tissue.
  • P-TEV holds significant potential for clinical application in reconstructive vein surgery.