MISC

2003年5月

Transplantation of skin fibroblasts expressing BMP-2 promotes bone repair more effectively than those expressing Runx2

BONE
  • K Hirata
  • ,
  • T Tsukazaki
  • ,
  • A Kadowaki
  • ,
  • K Furukawa
  • ,
  • Y Shibata
  • ,
  • T Moriishi
  • ,
  • Y Okubo
  • ,
  • K Bessho
  • ,
  • T Komori
  • ,
  • A Mizuno
  • ,
  • A Yamaguchi

32
5
開始ページ
502
終了ページ
512
記述言語
英語
掲載種別
DOI
10.1016/S8756-3282(03)00054-1
出版者・発行元
ELSEVIER SCIENCE INC

We investigated the osteogenic potential of skin fibroblasts that overexpressed BMP-2 or Runx2 by using adenoviral vectors. In in vitro experiments, skin fibroblasts infected with adenovirus vector encoding BMP-2 (AdBMP-2) released substantial levels of BMP-2 proteins into culture media, and those infected with adenovirus vector encoding Runx2 (AdRunx2) produced its protein. Transduction of BMP-2 or Runx2, respectively, increased alkaline phosphatase (ALP) activity and induced expression of mRNAs of ALP, osteocalcin, and osterix in skin fibroblasts. In in vivo experiments, we investigated the bone induction activity by transplantation of a complex composed of carrier [poly-D,L-lactic-co-glycolic acid/gelatin sponge (PGS)] and skin fibroblasts (PGS/SF complex). Transplantation of PGS/SF complexes composed of skin fibroblasts transduced with AdBMP-2-induced ectopic bone formation when transplanted into the subfascia of back muscle, unlike those infected with AdRunx2. Transplantation of PGS/SF complexes composed of skin fibroblasts transduced with AdBMP-2 into craniotomy defects induced bone formation from 2 weeks after transplantation, and almost all PGS was replaced by newly synthesized bone at 6 weeks. To investigate the fate of the transplanted cells, we transplanted skin fibroblasts isolated from green fluorescence protein transgenic mice into craniotomy defects. Transplantation of these skin fibroblasts transfected with AdBMP-2 generated green fluorescence protein-positive osteoblasts and osteocytes, indicating that the transplanted skin fibroblasts differentiated into osteoblastic lineage cells during bone repair. In contrast, transplantation of PGS/SF complexes composed of skin fibroblasts transduced with AdRunx2 induced a few ALP-positive cells at I week after transplantation, but their number decreased depending on time after transplantation. In addition, transplantation of these complexes was insufficient to induce bone repair. Taken together, our results suggest that skin fibroblasts expressing BMP-2 are more suitable for cell-mediated therapy of bone repair than those expressing Runx2. (C) 2003 Elsevier Science (USA). All rights reserved.

Web of Science ® 被引用回数 : 78

リンク情報
DOI
https://doi.org/10.1016/S8756-3282(03)00054-1
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000183071600006&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/S8756-3282(03)00054-1
  • ISSN : 8756-3282
  • Web of Science ID : WOS:000183071600006

エクスポート
BibTeX RIS