PMID- 32509200 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1943-8141 (Print) IS - 1943-8141 (Electronic) IS - 1943-8141 (Linking) VI - 12 IP - 5 DP - 2020 TI - Quercetin stimulates osteogenic differentiation of bone marrow stromal cells through miRNA-206/connexin 43 pathway. PG - 2062-2070 AB - The quantity and function of osteoblasts require continuous osteogenic differentiation of bone marrow mesenchymal stem cells. Recent evidence suggests that microRNAs (miRNAs) act as important post-transcriptional regulators in a wide range of biological processes, including osteoblastic differentiation. Quercetin has also been found to prevent bone loss. In this study, we investigated the osteogenesis of quercetin and miR-206 on bone marrow mesenchymal stem cells (BMSCs) and their relationship. We observed quercetin enhanced BMSCs proliferation with a dose-dependent manner in Cell Counting Kit-8 (CCK-8). Alizarin red S staining, alkaline phosphatase (ALP) quantification assay, miR-206 and mRNA levels of osteogenesis marker genes by quantitative real-time PCR (qPCR) were used to analyze osteogenic potential. We observed quercetin significantly elevated bone mineralization and the mRNA expression levels of osteoblast-specific genes including Runt-related transcription factor 2 (Runx2), Osterix (OSX), osteocalcin (OCN), and osteopontin (OPN). Correspondly, Cx43 expression were increased, while miR-206 expression were decreased. In the presence of agomir of miR-206, effects of quercetin on mineralization, alkaline phosphatase activity and osteoblast-specific genes expression were suppressed. Most of all, Cx43 protein level was also blocked while overexpression of miR-206 against quercetin effects. Taken together, these data indicated that quercetin promotes BMSCs proliferation and osteogenic differentiation. The osteogenic effect of quercetin is partly modulated through miR-206/Cx43 pathway. CI - AJTR Copyright (c) 2020. FAU - Zhang, Qihao AU - Zhang Q AD - Department of Orthopedics, The Third Affiliated Hospital (The Affiliated Luohu Hospital) of Shenzhen University Shenzhen 518000, Guangdong, P. R. China. FAU - Chang, Bo AU - Chang B AD - Department of Orthopedics, The Third Affiliated Hospital (The Affiliated Luohu Hospital) of Shenzhen University Shenzhen 518000, Guangdong, P. R. China. FAU - Zheng, Guizhou AU - Zheng G AD - Department of Orthopedics, The Third Affiliated Hospital (The Affiliated Luohu Hospital) of Shenzhen University Shenzhen 518000, Guangdong, P. R. China. FAU - Du, Shixin AU - Du S AD - Department of Orthopedics, The Third Affiliated Hospital (The Affiliated Luohu Hospital) of Shenzhen University Shenzhen 518000, Guangdong, P. R. China. FAU - Li, Xuedong AU - Li X AD - Department of Orthopedics, The Third Affiliated Hospital (The Affiliated Luohu Hospital) of Shenzhen University Shenzhen 518000, Guangdong, P. R. China. LA - eng PT - Journal Article DEP - 20200515 PL - United States TA - Am J Transl Res JT - American journal of translational research JID - 101493030 PMC - PMC7270039 OTO - NOTNLM OT - Quercetin OT - bone marrow stromal cells OT - connexin 43 OT - miR-206 OT - osteogenic differentiation COIS- None. EDAT- 2020/06/09 06:00 MHDA- 2020/06/09 06:01 PMCR- 2020/05/15 CRDT- 2020/06/09 06:00 PHST- 2019/05/15 00:00 [received] PHST- 2020/04/16 00:00 [accepted] PHST- 2020/06/09 06:00 [entrez] PHST- 2020/06/09 06:00 [pubmed] PHST- 2020/06/09 06:01 [medline] PHST- 2020/05/15 00:00 [pmc-release] PST - epublish SO - Am J Transl Res. 2020 May 15;12(5):2062-2070. eCollection 2020.