A new era: endoscopic tissue transplantation.

Area of Science:

• Regenerative Medicine
• Gastroenterology
• Biomedical Engineering

Background:

• Tissue engineering principles are crucial for advancing regenerative medicine.
• Gastrointestinal endoscopy presents unique opportunities for therapeutic interventions.

Purpose of the Study:

• To outline the fundamental concepts of tissue engineering.
• To explore the specific applications of tissue engineering within gastrointestinal endoscopy.

Main Methods:

• Utilizing autologous epidermal cell sheets for preventing post-endoscopic resection strictures.
• Employing seeded decellularized biological scaffolds for tissue repair.
• Investigating muscle-derived cell injections for lower esophageal sphincter augmentation.
• Applying stem cell-derived tissues for colon injury repair in animal models.
• Developing bioengineered sphincters for functional implantation.

Main Results:

• Successful prevention of strictures using cell sheets and scaffolds.
• Demonstrated potential for treating GERD with cell-based therapies.
• Effective repair of injured colon in a murine model.
• Functional implantation of a bioengineered internal anal sphincter in mice.

Conclusions:

• Mucosal repair after acute injury is an immediate application for tissue engineering in endoscopy.
• Tissue regeneration is achievable via autologous cell expansion or stem cell induction.
• Advancements in scaffolding enable bioengineering of complex gastrointestinal tissues.
• Sphincter augmentation and regeneration are emerging areas in endoscopic tissue engineering.