lncRNA IGF2-AS promotes the osteogenic differentiation of bone marrow mesenchymal stem cells by sponging miR-3,126-5p to upregulate KLK4.

The Journal of Gene Medicine
Jia Zhu TangBo Wang

Abstract

Osteoporosis (OP) is a bone disease characterized by reduced amount and quality of bone. This study was designed to explore the role and mechanism of lncRNA IGF2-AS in the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). Human lncRNA and miRNA microarray analyses were performed to measure the differential expression levels of lncRNAs and miRNAs in undifferentiated and osteogenically differentiated BMSCs. lncRNA IGF2-AS, miR-3,126-5p, and KLK4 levels were measured by real-time quantitative polymerase chain reaction (RT-qPCR). Osteogenic differentiation of BMSCs was assessed by alkaline phosphatase (ALP) staining and Alizarin Red staining (ARS). Protein levels of osterix (Osx), osteocalcin (OCN), and runt-related transcription factor 2 (RUNX2) were examined by RT-PCR and western blot assays. The binding relationship between miR-3,126-5p and lncRNA IGF2-AS or KLK4 was predicted by TargetScan (http://www.targetscan.org/vert_72/) and then verified with a dual-luciferase reporter assay. lncRNA IGF2-AS and KLK4 were highly expressed and miR-3,126-5p was weakly expressed in osteogenically differentiated BMSCs. Moreover, lncRNA IGF2-AS overexpression enhanced the osteogenic differentiation of BMSCs. In contrast,...Continue Reading

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