| Item type |
学位論文 / Thesis or Dissertation(1) |
| 公開日 |
2020-04-07 |
| タイトル |
|
|
タイトル |
Three-dimensional spheroids of mesenchymal stem/stromal cells promote osteogenesis by activating stemness and Wnt/β-catenin. |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題 |
Bone regeneration |
| キーワード |
|
|
言語 |
en |
|
主題 |
Mesenchymal stem/stromal cells |
| キーワード |
|
|
言語 |
en |
|
主題 |
Three dimension spheroid |
| キーワード |
|
|
言語 |
en |
|
主題 |
Wnt/beta-catenin |
| キーワード |
|
|
言語 |
en |
|
主題 |
Stemness |
| 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 |
| 著者 |
Imamura, Ayaka
Kajiya, Hiroshi
Fujisaki, Seiichi
Maeshiba, Munehisa
Yanagi, Tsukasa
Kojima, Hiroshi
Ohno, Jun
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Mesenchymal stem/stromal cells (MSCs) are multipotent and self-renewal cells that are widely used in regenerative medicine. The culture of three-dimensional (3D) spheroid MSCs more accurately mimics the biological microenvironment. However, it is unclear which key molecules are responsible for the cell fate control of MSCs during 3D spheroid formation and their impact on the functional characteristics of these stem cells. Furthermore, it remains unclear what effects 3D spheroid MSC transplantation has on new bone formation compared with that of 2D monolayer MSCs. We assessed whether the osteogenerative potential of 3D spheroid MSCs is greater than that of 2D monolayer MSCs in vitro. In addition, to elucidate the ability of 3D spheroid MSCs to regenerate bone, we examined the effects of transplanting wild-type (WT) or knockout (KO) spheroid MSCs on new bone formation in mice calvarial defect model in vitro. The 3D spheroid MSC culture dramatically upregulated into stemness markers compared with the 2D monolayer MSC culture. In contrast, BMP-2 significantly increased the osteogenesis-related molecules in the 3D spheroid MSCs but, in turn, downregulated the stemness markers. BMP-2 activated Smad1/5 together with Wnt/β-catenin in 3D spheroid MSCs. Transplantation of these MSCs into aged mice with calvarial defects promoted new bone formation compared with that of 2D monolayer MSCs. In contrast, transplantation of 3D or 2D β-catenin knockout MSCs induced little new bone formation. The 3D spheroid MSC culture had higher stemness compared with the 2D monolayer MSC culture. The culture of 3D spheroid MSCs rapidly promoted osteoblastogenesis and bone formation through synergistic activation of the Wnt/β-catenin pathway in vitro. The transformation of 3D spheroid, but not 2D monolayer, MSCs promoted new bone regeneration in vivo. These results indicate that transplantation of 3D spheroid MSCs in regeneration therapy contributes to a shorter regenerative healing process, including new bone formation. |
| 学位名 |
|
|
学位名 |
博士（歯学） |
| 学位授与大学 |
|
|
|
学位授与機関識別子 |
37114 |
|
|
学位授与機関名 |
福岡歯科大学 |
| 学位授与年度 |
|
|
内容記述 |
2019年度 |
| 学位授与年月日 |
|
|
学位授与年月日 |
2020-03-14 |
| 報告番号 |
|
|
学位授与番号 |
甲第317号 |
| 関連サイト |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.bbrc.2019.12.066 |
|
|
関連名称 |
ScienceDirect |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
甲第317号_論文(今村彩香) (1.1 MB)
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