Negative regulation of Odd-skipped related 2 by TGF-beta achieves the induction of cellular migration and the arrest of cell cycle

作者：Kawai Shinji^*; Amano Atsuo

来源：Biochemical and Biophysical Research Communications, 2012, 421(4): 696-700.

DOI：10.1016/j.bbrc.2012.04.064

• Transcription factor
• Odd-skipped related 2
• Transforming growth factor-beta
• Cellular migration
• Promoter

The transcription factor Odd-skipped related 2 (Osr2) functions in craniofacial and limb developments in mammals. We previously found that Osr2 gene expression is regulated by intracellular transcription factors such as Runx2, and C/EBP, whereas it remains unclear if extracellular factors would functionally regulate the Osr2 expression. In this study, we showed that TGF-beta down-regulated the Osr2 expression, which is involved in regulation of cellular migration and cell cycle. Furthermore, the down-regulation was found to be mediated by Smad3/Smad4 and p38/ATF2 signaling molecules. The Osr2 promoter was shown to possess Smad3/4 binding element and ATF2 binding element between -647 and -64 of promoter. TGF-beta induced cellular migration in C3H10T1/2 cells and arrested cell cycle at G1 phase in NMuMG-Fucci cells. In contrast, the Osr2 reduced the migration and also stimulated the cell-cycle progression. These results suggest that Osr2 is involved in TGF-beta regulating cell migration and cell cycle via a Smad3-ATF2 transcriptional complex mediating pathway.

• 出版日期2012-5-18