Long Noncoding RNA H19 Promotes Osteoblast Differentiation Via TGF-β1/Smad3/HDAC Signaling Pathway by Deriving miR-675

被引:386
作者
Huang, Yiping [1 ]
Zheng, Yunfei [2 ]
Jia, Lingfei [2 ,3 ]
Li, Weiran [1 ]
机构
[1] Peking Univ, Sch & Hosp Stomatol, Dept Orthodont, Beijing 100081, Peoples R China
[2] Peking Univ, Sch & Hosp Stomatol, Dept Oral & Maxillofacial Surg, Beijing 100081, Peoples R China
[3] Peking Univ, Cent Lab, Sch & Hosp Stomatol, Beijing 100081, Peoples R China
基金
中国国家自然科学基金;
关键词
Mesenchymal stem cells; Osteoblast differentiation; lncRNA; miRNA; H19; miR-675; MESENCHYMAL STEM-CELLS; GROWTH-FACTOR-BETA; BONE-FORMATION; OSTEOGENIC DIFFERENTIATION; TGF-BETA; ECTOPIC OSTEOGENESIS; CANCER METASTASIS; EMBRYONIC STEM; MESSENGER-RNA; STROMAL CELLS;
D O I
10.1002/stem.2225
中图分类号
Q813 [细胞工程];
学科分类号
100113 [医学细胞生物学];
摘要
Long noncoding RNAs (lncRNAs) are emerging as important regulatory molecules at the transcriptional and post-transcriptional levels and may play essential roles in the differentiation of human bone marrow mesenchymal stem cell (hMSC). However, their roles and functions remain unclear. Here, we showed that lncRNA H19 was significantly upregulated after the induction of osteoblast differentiation. Overexpression of H19 promoted osteogenic differentiation of hMSCs in vitro and enhanced heterotopic bone formation in vivo, whereas knockdown of H19 inhibited these effects. Subsequently, we found that miR-675, encoded by exon1 of H19, promoted osteoblast differentiation of hMSCs and was partially responsible for the pro-osteogenic effect of H19. Investigating the underlying mechanism, we demonstrated that H19/miR-675 inhibited mRNA and protein expression of transforming growth factor-beta 1 (TGF-beta 1). The downregulation of TGF-beta 1 subsequently inhibited phosphorylation of Smad3. Meanwhile, H19/miR-675 downregulated the mRNA and protein levels of histone deacetylase (HDAC) 4/5, and thus increased osteoblast marker gene expression. Taken together, our results demonstrated that the novel pathway H19/miR-675/TGF-beta 1/Smad3/HDAC regulates osteogenic differentiation of hMSCs and may serve as a potential target for enhancing bone formation in vivo.
引用
收藏
页码:3481 / 3492
页数:12
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