کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1935317 | 1050663 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: β1 integrins regulate chondrogenesis and rock signaling in adipose stem cells β1 integrins regulate chondrogenesis and rock signaling in adipose stem cells](/preview/png/1935317.png)
β1 integrins play a controversial role during chondrogenesis. Since the maturation of chondrocytes relies on a signaling switch from cell–cell to cell–matrix interactions, we hypothesized that β1 integrins play a different role at the earlier (mainly cell–cell interaction) from the later stage (mainly cell–matrix interaction) of chondrogenesis. Our data showed: in plain medium, sox9, collagen X, and collagen II gene expressions of ASCs were induced by β1-integrin blockage at day 14. In chondrogenic medium, however, sox 9, sox6, and collagen II gene expression were induced at day 4 but inhibited at day 14. In addition, both β1-integrin blockage and TGF-β1 down-regulated Rock-1 and -2 gene expression and produced the round cells. We concluded that β1 integrins play a more important role at the later stages than earlier stages of chondrogenesis, and that the onset of chondrogenesis promoted by β1-integrin blockage might be through inhibiting Rock signaling.
Journal: Biochemical and Biophysical Research Communications - Volume 372, Issue 4, 8 August 2008, Pages 547–552