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Related Experiment Video

Updated: Jun 16, 2025

Seeding and Implantation of a Biosynthetic Tissue-engineered Tracheal Graft in a Mouse Model
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Multi-Tissue Integrated Tissue-Engineered Trachea Regeneration Based on 3D Printed Bioelastomer Scaffolds.

Xingqi Song1, Peiling Zhang1, Bin Luo2

  • 1Department of Plastic and Reconstructive Surgery, Department of Cardiology, Shanghai Key Lab of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 19, 2024
PubMed
Summary

Researchers developed a multi-tissue integrated tissue-engineered trachea (MI-TET) using 3D-printed scaffolds and various cells. This advanced tissue-engineered trachea closely mimics natural trachea structure and function, offering hope for thoracic surgery.

Keywords:
3D printingbioelastomercartilagetissue engineeringtrachea regeneration

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Area of Science:

  • Biomaterials Engineering
  • Regenerative Medicine
  • Thoracic Surgery

Background:

  • Tissue-engineered trachea (TET) is a promising solution for functional segmental trachea reconstruction.
  • Current TET lacks the complex multi-tissue structure of natural trachea, limiting its physiological function restoration.

Purpose of the Study:

  • To develop a multi-tissue integrated tissue-engineered trachea (MI-TET) that replicates the natural trachea's intricate structure and function.
  • To assess the regenerative capacity of MI-TET for essential tracheal components.

Main Methods:

  • Orderly assembly of chondrocytes, fibroblasts, and epithelial cells on 3D-printed poly(glycolic acid-co-trimethylene carbonate) (PGS) bioelastomer scaffolds.
  • Construction of a multi-tissue construct mimicking the C-shaped cartilage ring, O-shaped vascularized fiber ring, axial fiber bundle, and airway epithelium.

Main Results:

  • Successful development of MI-TET with integrated regeneration of four key tracheal components.
  • MI-TET demonstrated structural and functional similarities to natural trachea.
  • The construct achieved regeneration of C-shaped cartilage rings, O-shaped vascularized fiber rings, axial fiber bundles, and airway epithelium.

Conclusions:

  • The developed MI-TET closely resembles natural trachea in multi-tissue structure and physiological function.
  • MI-TET shows significant potential for future clinical applications in functional tissue-engineered trachea.
  • This approach advances the field of regenerative medicine for complex organ reconstruction.