| First Author | Ma W | Year | 2019 |
| Journal | Biochem Biophys Res Commun | Volume | 510 |
| Issue | 1 | Pages | 53-58 |
| PubMed ID | 30660362 | Mgi Jnum | J:291243 |
| Mgi Id | MGI:6442369 | Doi | 10.1016/j.bbrc.2019.01.003 |
| Citation | Ma W, et al. (2019) Let-7a-5p inhibits BMSCs osteogenesis in postmenopausal osteoporosis mice. Biochem Biophys Res Commun 510(1):53-58 |
| abstractText | PURPOSE: The aim of this study was to investigate the mechanism of let-7a-5p in osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) in postmenopausal osteoporosis (PMOP) mice. METHODS: A mouse model of PMOP was established and osteoporosis model was identified by micro-CT scan. BMSCs in the sham group and PMOP group were cultured and osteogenic differentiation was induced. The expression of let-7a-5p in BMSCs was detected by qRT-PCR, and BMSCs was induced by osteogenic differentiation in sham and PMOP group. The BMSCs treated by let-7a-5p mimics, let-7a-5p inhibitor and negative control were named as let-7a-5p mimics group, mimics NC group, let-7a-5p inhibitor group and inhibitor NC group, respectively. ALP staining and alizarin red staining were used to detect osteogenic differentiation ability, qRT-PCR and western blot were used to detect the expression of Runt-related transcription factor 2 (Runx2) and Osterix. The targeting relationship between let-7a-5p and TGFBR1 were verificated by target scan and luciferase reporter gene assay. RESULTS: The PMOP mouse model was successfully established. The expression of let-7a-5p in BMSCs of PMOP group was significantly higher than that in the sham group (P<0.05). Let-7a-5p reduced the expression of ALP and the formation of calcified nodules, while also inhibited the expression of Runx2 and Osterix. TGFBR1 is the target gene of let-7a-5p. CONCLUSION: Let-7a-5p might inhibit the osteogenic differentiation of BMSCs in PMOP mice by regulating TGFBR1. |
