A Tissue Engineered Construct for Laryngeal Regeneration: A Proof-of-Concept Device Design Study

Area of Science:

• Regenerative Medicine
• Biomaterials Science
• Surgical Innovation

Background:

• Partial laryngectomy necessitates reconstructive solutions.
• Current reconstructive methods have limitations.
• Tissue engineering offers a promising alternative for laryngeal repair.

Purpose of the Study:

• To develop and evaluate a patient-specific tissue-engineered construct for laryngeal reconstruction.
• To assess the functional and histological outcomes of the construct in a preclinical model.

Main Methods:

• A porous polyethylene scaffold was customized and seeded with autologous canine adipose-derived stem cells in fibrin glue.
• The construct was implanted in a canine following a partial laryngectomy.
• In vivo functional assessment (voicing, breathing, eating) and histological evaluation were performed after one year.

Main Results:

• The engineered construct facilitated normal voicing, breathing, and eating functions in the canine model at one year.
• Acoustic and aerodynamic measures were within normal ranges.
• The construct showed good integration and epithelialization, with no need for additional anti-infective agents.

Conclusions:

• This study represents a significant advancement in developing patient-specific composite constructs for laryngeal reconstruction.
• The findings support the potential of tissue-engineered solutions for patients undergoing partial laryngectomies.