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논문 기본 정보

자료유형
학술저널
저자정보
Cha Jae Min (Department of Mechatronics Engineering College of Engineering Incheon National University) 황유식 (경희대학교) Kang Dong-Ku (Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology School of Dentistr) Lee Jun (Wonkwang Bone Regeneration Research Institute Wonkwang University) Cooper Elana S. (Department of Biomedical Engineering Georgia Institute of Technology) Mantalaris Athanasios (Department of Biomedical Engineering Georgia Institute of Technology)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제19권 제4호
발행연도
2022.8
수록면
739 - 754 (16page)
DOI
10.1007/s13770-022-00447-3

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Background: As stem cells are considered a promising cell source for tissue engineering, many culture strategies have been extensively studied to generate in vitro stem cell-based tissue constructs. However, most approaches using conventional tissue culture plates are limited by the lack of biological relevance in stem cell microenvironments required for neotissue formation. In this study, a novel perfusion rotating wall vessel (RWV) bioreactor was developed for mass-production of stem cell-based 3D tissue constructs. Methods: An automated RWV bioreactor was fabricated, which is capable of controlling continuous medium perfusion, highly efficient gas exchange with surrounding air, as well as low-intensity pulsed ultrasound (LIPUS) stimulation. Embryonic stem cells encapsulated in alginate/gelatin hydrogel were cultured in the osteogenic medium by using our bioreactor system. Cellular viability, growth kinetics, and osteogenesis/mineralization were thoroughly evaluated, and culture media were profiled at real time. The in vivo efficacy was examined by a rabbit cranial defect model. Results: Our bioreactor successfully maintained the optimal culture environments for stem cell proliferation, osteogenic differentiation, and mineralized tissue formation during the culture period. The mineralized tissue constructs produced by our bioreactor demonstrated higher void filling efficacy in the large bone defects compared to the group implanted with hydrogel beads only. In addition, the LIPUS modules mounted on our bioreactor successfully reached higher mineralization of the tissue constructs compared to the groups without LIPUS stimulation. Conclusion: This study suggests an effective biomanufacturing strategy for mass-production of implantable mineralized tissue constructs from stem cells that could be applicable to future clinical practice.

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