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Abstract

Bioengineering

Surgical Model for Single-Staged Tissue-Engineered Urothelial Tubes in Minipigs

Published: July 5th, 2024

DOI:

10.3791/66936

1Division of Pediatric Surgery, Department of Surgery and Transplantation, Copenhagen University Hospital - Rigshospitalet, 2Laboratory of Tissue Engineering, Department of Clinical Medicine, University of Copenhagen, 3Laboratory of Tissue Engineering, Department of Women's and Children's Health, Karolinska Institutet, 4Department of Experimental Medicine, University of Copenhagen

Abstract

Reconstructive surgeries are often challenged by a lack of grafting tissue. In the treatment of urogenital malformations, the conventional solution has been harvesting gastrointestinal tissue for non-orthotopic reconstruction due to its abundance to reestablish normal function in the patient. The clinical outcomes after rearranging native tissues within the body are often associated with significant morbidity; thus, tissue engineering holds specific potential within this field of surgery. Despite substantial advances, tissue-engineered scaffolds have not yet been established as a valid surgical treatment alternative, mainly due to the costly and complex requirements of materials, production, and implantation. In this protocol, we present a simple and accessible collagen-based tubular scaffold embedded with autologous organ-specific tissue particles, designed as a conduit for urinary diversion. The scaffold is constructed during the primary surgical procedure, comprises commonly available surgical materials, and requires conventional surgical skills. Secondly, the protocol describes an animal model designed to evaluate the short-term in vivo outcomes post-implantation, with the possibility of additional variations to the procedure. This publication aims to demonstrate the procedure step-by-step, with special attention to the use of autologous tissue and a tubular form.

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