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논문 기본 정보

자료유형
학술저널
저자정보
Chang Jiyeon (Department of Integrated Biomedical Science Soonchunhyang University) Song Woo Jin (Department of Plastic and Reconstructive Surgery Soonchunhyang University Hospital) Soedono Shindy (Department of Integrated Biomedical Science Soonchunhyang University) Sharlene Sharlene (Department of Integrated Biomedical Science Soonchunhyang University) Kim Yeong Jin (Department of Plastic and Reconstructive Surgery Soonchunhyang University Hospital) Choi Chang Yong (Department of Plastic and Reconstructive Surgery Soonchunhyang University Hospital) Cho Kae Won (Soonchunhyang Institute of Medi-Bio Science (SIMS) Soonchunhyang University)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제19권 제5호
발행연도
2022.10
수록면
1,051 - 1,061 (11page)
DOI
10.1007/s13770-022-00470-4

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BACKGROUND: Angiogenesis plays an important role in determining the fat graft survival. However, clinical preconditioning techniques that target angiogenesis during fat grafting have not been established so far. Adenosine has emerged as a regulator of angiogenesis under hypoxic conditions; therefore, the aim of this study was to investigate the effects and underlying mechanisms of adenosine prefabrication on fat graft survival. METHODS: In the first animal study, a total of 32 mice were transplanted with fat prefabricated with vehicle (Control, N = 16) or adenosine (Adenosine, N = 16). In the second animal study, 24 mice were divided into three groups based on the type of fat graft: Control (N = 8), Adenosine (N = 8), and Axitinib (cotreatment of adenosine with axitinib, N = 8). At 1- and 4-weeks post-transplantation, grafts were evaluated by histopathological and biochemical assessment. Adenosine-induced vascular endothelial growth factor (VEGF) production and angiogenesis were determined using cell cultures. RESULTS: The retention volumes of fat grafts in the adenosine group were significantly increased until 4 weeks. Fat grafts from the adenosine group exhibited greater structural integrity, reduced fibrosis, and increased blood vessels. The expression levels of angiogenesis-related genes, Vegfa, Vegfr1, Vegfr2, and Vwf, were elevated in the adenosine group. Furthermore, adenosine upregulated VEGF production in preadipocytes, thereby enhancing the migration of endothelial cells. Treatment with the axitinib, VEGF receptor inhibitor, abrogated the adenosine-induced angiogenesis in the fat grafts. CONCLUSION: Adenosine prefabrication in fat improved the graft survival by enhancing angiogenesis through the VEGF/VEGFR axis in the preadipocytes and endothelial cells. Therefore, this method may be used as a novel strategy to increase the retention rate in fat grafts.

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