Alternative Titleラット頭蓋冠欠損モデルにおける-リン酸三カルシウムとゼラチンの複合スポンジを用いた脱分化脂肪細胞による骨再生
Note (General)Mechanical and resorbable scaffolds are in high demand for stem cell-based regenerative medi-cine, to treat refractory bone defects in craniofacial abnormalities and injuries. Multipotent pro-genitor cells, such as dedifferentiated fat (DFAT) cells, are prospective sources for regenerative therapies. Herein, we aimed to demonstrate that a composite gelatin sponge (α-TCP/GS) of al-fa-tricalcium phosphate (α-TCP) mixed with gelatin scaffolds (GS), with/without DFATs, induced bone regeneration in a rat calvarial defect model in vivo. α-TCP/GS was prepared by mixing α-TCP and 2% GS using vacuum-heated methods. α-TCP/GS samples with/without DFATs were transplanted into the model. After 4 weeks of implantation, the samples were subjected to mi-cro-computed tomography (μ-CT) and histological analysis. α-TCP/GS possessed adequate me-chanical strength; α-TCP did not convert to hydroxyapatite upon contact with water, as deter-mined by X-ray diffraction. Moreover, stable α-TCP/GS was formed by electrostatic interactions, and verified based on the infrared peak shifts. μ-CT analyses showed that bone formation was higher in the α-TCP/GS+ DFAT group than in the α-TCP/GS group. Therefore, the implantation of α-TCP/GS comprising DFAT cells enhanced bone regeneration and vascularization, demon-strating the potential for healing critical-sized bone defects.
2021年度
Collection (particular)国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
Date Accepted (W3CDTF)2022-06-05T18:01:14+09:00
Data Provider (Database)国立国会図書館 : 国立国会図書館デジタルコレクション