Depletion of MEIS2 inhibits osteogenic differentiation potential of human dental stem cells

International Journal of Clinical and Experimental Medicine

Songlin Wang¹  Zhifang Wu¹  Dayong Liu¹  Rui Dong¹  Liping Wang¹  Zhipeng Fan¹  Jinsong Wang¹ 

关键词: Mesenchymal stem cell;    osteogenic differentiation;    MEIS2;    homeobox gene;    tooth;   

DOI  :  

学科分类：医学（综合）

来源: e-Century Publishing Corporation

【 摘 要 】

Dental mesenchymal stem cells (MSCs) are a reliable and promising cell source for the regeneration of tooth,bone and other tissues . However, the molecular mechanisms underlying their differentiation are still largely unknown, which restricts their further wide application. Here, we investigate regulatory function of homeobox gene MEIS2 in the osteogenic differentiation potential of MSCs using stem cells from apical papilla (SCAPs) and dental pulp stem cells (DPSCs) by loss-of-function experiments. Our findings demonstrated that knockdown of MEIS2 in SCAPs and DPSCs decreased alkaline phosphatase (ALP) activity and mineralization, and inhibited the mRNA expression of ALP, bone sialoprotein (BSP), and osteocalcin (OCN). Besides, depletion of MEIS2 resulted in reduced expression of the key osteogenesis-related transcription factor, osterix (OSX) but not in the expression of runt-related transcription factor 2 (RUNX2). Furthermore, MEIS2 expression significantly increased during osteogenic induction and was strongly upregulated by BMP4 stimulation. Taken together, these results indicated that MEIS2 played an essential role in maintaining osteogenic differentiation potential of dental tissue- derived MSCs. These findings will provide new insights into the mechanisms underlying directed differentiation of MSCs, and identify a potential target gene in dental tissues derived MSCs for promoting the tissue regeneration.

【 授权许可】

Unknown