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Tissue-engineered trachea regeneration using decellularized trachea matrix treated with laser micropore technique.

Yong Xu1, Dan Li2, Zongqi Yin2

  • 1Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, PR China.

Acta Biomaterialia
|May 27, 2017
PubMed
Summary

Laser micropore technique enhances decellularized trachea matrix scaffolds for tissue engineering. This improved scaffold promotes robust cartilage regeneration, offering a promising strategy for trachea reconstruction.

Keywords:
CartilageDecellularized matrixLaser micropore techniqueTissue-engineered trachea

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Tissue-engineered trachea offers a solution for tracheal defects but is limited by scaffold availability.
  • Decellularized trachea matrix (DTM) is a potential scaffold, but cell residues and low porosity cause immunogenicity and hinder cartilage regeneration.

Purpose of the Study:

  • To address limitations of DTM by enhancing porosity and decellularization efficacy using a laser micropore technique (LMT).
  • To evaluate the potential of LMT-treated DTM (LDTM) as a scaffold for tubular cartilage regeneration and functional trachea reconstruction.

Main Methods:

  • A laser micropore technique (LMT) was applied to native trachea to increase porosity.
  • Optimized LMT and decellularization protocols were used to create LDTM, preserving tubular structure and minimizing matrix damage.
  • Chondrocytes were seeded onto LDTM, followed by in vitro culture and in vivo implantation to assess cartilage formation.

Main Results:

  • LMT facilitated more efficient cell removal from the trachea matrix compared to untreated samples.
  • LDTM constructs maintained tubular shape with minimal extracellular matrix damage.
  • In vitro and in vivo studies demonstrated that LDTM scaffolds supported homogeneous chondrocyte distribution and formed mature tubular cartilage with enhanced matrix content and mechanical strength, comparable to native trachea.

Conclusions:

  • LMT-treated DTM (LDTM) serves as an ideal scaffold for tubular cartilage regeneration.
  • LDTM provides a promising strategy for the functional reconstruction of trachea cartilage defects.