|
|||||
|
|
miR-125b inhibits osteoblastic differentiation by down-regulation of cell proliferation |
|
| Authors: | Mizuno Yosuke Yagi Ken Tokuzawa Yoshimi Kanesaki-Yatsuka Yukiko Suda Tatsuo Katagiri Takenobu Fukuda Toru Maruyama Masayoshi Okuda Akihiko Amemiya Tomoyuki Kondoh Yasumitsu Tashiro Hideo Okazaki Yasushi |
| Institution: | a Division of Functional Genomics & Systems Medicine, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka City, Saitama 350-1241, Japan b Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka City, Saitama 350-1241, Japan c Division of Developmental Biology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka City, Saitama 350-1241, Japan d Division of Translational Research, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka City, Saitama 350-1241, Japan e Probing Technology Laboratory, RIKEN, 2-1 Hirosawa, Wako City, Saitama 351-0198, Japan |
| Abstract: | Although various microRNAs regulate cell differentiation and proliferation, no miRNA has been reported so far to play an important role in the regulation of osteoblast differentiation. Here we describe the role of miR-125b in osteoblastic differentiation in mouse mesenchymal stem cells, ST2, by regulating cell proliferation. The expression of miR-125b was time-dependently increased in ST2 cells, and the increase in miR-125b expression was attenuated in osteoblastic-differentiated ST2 cells induced by BMP-4. The transfection of exogenous miR-125b inhibited proliferation of ST2 cells and caused inhibition of osteoblastic differentiation. In contrast, when the endogenous miR-125b was blocked by transfection of its antisense RNA molecule, alkaline phosphatase activity after BMP-4 treatment was elevated. These results strongly suggest that miR-125b is involved in osteoblastic differentiation through the regulation of cell proliferation. |
| Keywords: | miRNA-125b Differentiation Osteoblast |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |