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Updated: Dec 25, 2025

Seeding and Implantation of a Biosynthetic Tissue-engineered Tracheal Graft in a Mouse Model
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3D-bioprinted tracheal reconstruction: an overview.

Lidia Frejo1,2, Daniel A Grande1,3

  • 1Orthopaedic Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA.

Bioelectronic Medicine
|April 2, 2020
PubMed
Summary

Tissue engineering, particularly 3D-bioprinting, offers a promising solution for airway reconstruction in conditions like tracheomalacia and tracheal stenosis. Further long-term studies are needed to ensure the safety and efficacy of engineered tracheal grafts.

Keywords:
3D-bioprintingBiomaterialsTracheal reconstruction

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Surgical Innovation

Background:

  • Congenital tracheomalacia and tracheal stenosis affect premature infants and adults, posing life-threatening risks.
  • Acquired airway dysfunctions stem from tracheostomy, intubation, trauma, infection, and tumors.
  • Current surgical interventions face limitations for extensive airway pathologies.

Purpose of the Study:

  • To explore tissue engineering as a viable approach for massive airway reconstruction.
  • To review strategies employed in tissue-engineered tracheal graft development.
  • To highlight the role of 3D-bioprinting in advancing airway reconstruction.

Main Methods:

  • Review of various strategies in tracheal reconstruction, including scaffold materials, construct designs, cellular types, and biologic components.
  • Examination of hydrogels and animal models utilized in preclinical and clinical airway reconstruction efforts.
  • Analysis of 3D-bioprinting applications in current tissue engineering research for airway repair.

Main Results:

  • 3D-bioprinting is a key technology contributing to preclinical and clinical airway reconstruction efforts.
  • Diverse strategies involving scaffolds, cells, biomaterials, and animal models are being investigated.
  • Significant progress has been made in developing tissue-engineered tracheal grafts.

Conclusions:

  • Tissue engineering presents a promising avenue for treating severe airway dysfunctions, including tracheomalacia and tracheal stenosis.
  • Long-term in vivo studies are essential to evaluate the efficacy, safety, mechanical properties, and potential for re-stenosis of engineered tracheal grafts.
  • Continued research is vital to overcome existing surgical limitations and improve patient outcomes.