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The utility of human dedifferentiated fat cells in bone tissue engineering in vitro
https://osaka-dent.repo.nii.ac.jp/records/48
https://osaka-dent.repo.nii.ac.jp/records/481936f51a-9020-4609-a838-06022c8a79ed
名前 / ファイル | ライセンス | アクション |
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学位論文 (1.4 MB)
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論文内容要旨・審査結果要旨 (141.3 kB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2016-08-01 | |||||
本文言語 | ||||||
言語 | eng | |||||
タイトル | ||||||
タイトル | The utility of human dedifferentiated fat cells in bone tissue engineering in vitro | |||||
著者 |
坂本, 章人
× 坂本, 章人× Sakamoto, Fumito |
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資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||
資源タイプ | doctoral thesis | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We compared the osteoblastic differentiation abilities of dedifferentiated fat cells (DFATs) and human bone marrow mesenchymal stem cells (hMSCs) as a cell source for bone regeneration therapies. In addition, the utility of DFATs in bone tissue engineering in vitro was assessed by an alpha-tricalcium phosphate (α-TCP)/collagen sponge (CS). Human DFATs were isolated from the submandibular of a patient by ceiling culture. DFATs and hMSCs at passage 3 were cultured in control medium or osteogenic medium (OM) for 14 days. Runx2 gene expression, alkaline phosphatase (ALP) activity, as well as osteocalcin (OCN) and calcium contents were analyzed to evaluate the osteoblastic differentiation ability of both cell types. DFATs seeded in a α-TCP/CS and cultured in OM for 14 days were analyzed by scanning electron microscopy (SEM) and histologically. Compared with hMSCs, DFATs cultured in OM generally underwent superior osteoblastogenesis by higher Runx2 gene expression at all days tested, as well as higher ALP activity at day 3 and 7, OCN expression at day 14, and calcium content at day 7. In SEM analyses, DFATs seeded in a α-TCP/CS were well spread and covered the α-TCP/CS by day 7. In addition, numerous spherical deposits were found to almost completely cover the α-TCP/CS on day 14. Von Kossa staining showed that DFATs differentiated into osteoblasts in the α-TCP/CS and formed cultured bone by deposition of a mineralized extracellular matrix. The combined use of DFATs and an α-TCP/CS may be an attractive option for bone tissue engineering. | |||||
学位名 | ||||||
学位名 | 博士(歯学) | |||||
学位授与機関 | ||||||
学位授与機関識別子Scheme | kakenhi | |||||
学位授与機関識別子 | 34408 | |||||
学位授与機関名 | 大阪歯科大学 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 2014-03-07 | |||||
学位授与番号 | ||||||
学位授与番号 | 甲第722号 |