miR-361-3P调控转化生长因子β1诱导成骨细胞凋亡的研究
王帆, 王鹏皓中国医科大学附属第一医院骨科, 沈阳 110001
收稿日期:
2022-11-16出版日期:
2023-07-30发布日期:
2023-07-08通讯作者:
王鹏皓E-mail:phwang@cmu.edu.cn作者简介:
王帆(1987-),女,护师,本科.基金资助:
国家自然科学基金(81971322)关键词: 成骨细胞, miR-361-3P, 转化生长因子β1, caspase 3, 细胞凋亡
Abstract: Objective To investigate the effect of microRNA(miR)-361-3p on transforming growth factor-β1(TGF-β1)expression and apoptosis marker molecule caspase 3 protein activity,and the apoptotic mechanism of the miR-361-3p/TGF-1 pathway in human osteoblasts. Methods The miR-361-3p mimic or miR-361-3p and small interferingRNA(si-TGF-β1)were transfected into human osteoblasts (hFob1.19). The expression and binding of miR-361-3p and TGF-β1 were assessed by real-time quantitative PCR(RT-qPCR),CCK-8 kit, and luciferase gene reporter assay. Results Within hFob1.19 cells,the miR-361-3p mimic significantly downregulated TGF-1 mRNA expression and significantly inhibited TGF-β1 protein activity(P<0.05). Cell proliferation was significantly decreased in hFob1.19 cells after 48 h by the miR-361-3p mimic(P<0.05),and the activity of caspase 3 significantly increased(P<0.05). The miR-361-3p mimic also reduced the luciferase activity of WT-TGF-β1. The miR-361-3p inhibitor enhanced the proliferation of hFob1.19 cells and inhibited the protein activity of caspase 3 in the cells,while si-TGF-β1 enhanced the active expression of caspase 3. Conclusion miR-361-3p may negatively regulate the proliferation of hFob1.19 cells and promote apoptosis by inhibiting TGF-β1.
Key words: osteoblasts, miR-361-3p, transforming growth factor-β1, caspase 3, cell apoptosis
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