Seong Yong Park1, Jae Won Choi2, Ju-Kyeong Park3, Eun Hye Song2, Su A Park4, Yeon Soo Kim2, Yoo Seob Shin5, Chul-Ho Kim3. 1. Department of Thoracic and Cardiovascular Surgery, Ajou University, Suwon, Republic of Korea. 2. Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea. 3. Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea Department of Molecular Science & Technology, Ajou University, Suwon, Republic of Korea. 4. Nature-Inspired Mechanical System Team, Nano Convergence & Manufacturing Systems Research Division, Korea Institute of Machinery and Materials, Daejeon, Republic of Korea. 5. Department of Otolaryngology, School of Medicine, Ajou University, Suwon, Republic of Korea ysshinmd@ajou.ac.kr.
Abstract
OBJECTIVES: There has been a recent focus on 3D printing with regard to tissue engineering. We evaluated the efficacy of a 3D-printed (3DP) scaffold coated with mesenchymal stem cells (MSCs) seeded in fibrin for the repair of partial oesophageal defects. METHODS: MSCs from rabbit bone marrow were cultured, and a 3DP polycaprolactone (PCL) scaffold was coated with the MSCs seeded in fibrin. The fibrin/MSC-coated 3DP PCL scaffold was implanted on a 5 × 10 mm artificial oesophageal defect in three rabbits (3DP/MSC group) and 3DP PCL-only scaffolds were implanted in three rabbits (3DP-only group). Three weeks post-procedure, the implanted sites were evaluated radiologically and histologically. RESULTS: None of the rabbits showed any infection, stenosis or granulation on computed tomography. In the 3DP/MSC group, the replaced scaffolds were completely covered with regenerating mucosal epithelium and smooth muscle cells as determined by haematoxylin and eosin and Desmin staining. However, mucosal epithelium and smooth muscle cell regeneration was not evident in the 3DP-only group. CONCLUSIONS: Use of the 3DP scaffold coated with MSCs seeded in fibrin resulted in successful restoration of the shape and histology of the cervical oesophagus without any graft rejection; thus, this is a promising material for use as an artificial oesophagus.
OBJECTIVES: There has been a recent focus on 3D printing with regard to tissue engineering. We evaluated the efficacy of a 3D-printed (3DP) scaffold coated with mesenchymal stem cells (MSCs) seeded in fibrin for the repair of partial oesophageal defects. METHODS: MSCs from rabbit bone marrow were cultured, and a 3DP polycaprolactone (PCL) scaffold was coated with the MSCs seeded in fibrin. The fibrin/MSC-coated 3DP PCL scaffold was implanted on a 5 × 10 mm artificial oesophageal defect in three rabbits (3DP/MSC group) and 3DP PCL-only scaffolds were implanted in three rabbits (3DP-only group). Three weeks post-procedure, the implanted sites were evaluated radiologically and histologically. RESULTS: None of the rabbits showed any infection, stenosis or granulation on computed tomography. In the 3DP/MSC group, the replaced scaffolds were completely covered with regenerating mucosal epithelium and smooth muscle cells as determined by haematoxylin and eosin and Desmin staining. However, mucosal epithelium and smooth muscle cell regeneration was not evident in the 3DP-only group. CONCLUSIONS: Use of the 3DP scaffold coated with MSCs seeded in fibrin resulted in successful restoration of the shape and histology of the cervical oesophagus without any graft rejection; thus, this is a promising material for use as an artificial oesophagus.
Authors: Yoo Suk Kim; Yoo Seob Shin; Do Yang Park; Jae Won Choi; Joo Kyung Park; Dong Ho Kim; Chul Ho Kim; Su A Park Journal: Ann Biomed Eng Date: 2015-01-31 Impact factor: 3.934
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Authors: Edward Hannon; Marco Pellegrini; Federico Scottoni; Natalie Durkin; Soichi Shibuya; Roberto Lutman; Toby J Proctor; J Ciaran Hutchinson; Owen J Arthurs; Demetra-Ellie Phylactopoulos; Elizabeth F Maughan; Colin R Butler; Simon Eaton; Mark W Lowdell; Paola Bonfanti; Luca Urbani; Paolo De Coppi Journal: iScience Date: 2022-09-22