PMID- 31607001 OWN - NLM STAT- MEDLINE DCOM- 20191125 LR - 20200108 IS - 1002-0098 (Print) IS - 1002-0098 (Linking) VI - 54 IP - 10 DP - 2019 Oct 9 TI - [MicroRNA-26a-5p targets Wnt5a to regulate osteogenic differentiation of human periodontal ligament stem cell from inflammatory microenvironment]. PG - 662-669 LID - 10.3760/cma.j.issn.1002-0098.2019.10.003 [doi] AB - Objective: To investigate the effect of microRNA-26a-5p on osteogenic differentiation of human periodontal ligament stem cells (hPDLSC) and its related mechanisms. Methods: hPDLSC in periodontal tissues from healthy adults and hPDLSC from periodontitis patients (PPDLSC) were isolated and cultured in vitro, respectively. The PPDLSC were divided into Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ groups. Group Ⅰ is control group, and the other four groups were transiently transfected with miR-NC, miR-26a-5p, antimiR-NC and antimiR-26a-5p lentiviral vectors, respectively. The osteogenic differentiation abilities of the cells in vitro were determined by alizarin red staining, alkaline phosphatase (ALP) activity assay and real-time quantitative PCR (qPCR). Totally 40 male mice (6-weeks) were equally divided into five groups with 8 mice in each group. The PPDLSCs cells (1x10(7)/ml) in Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ groups, which adhered to hydroxyapatine-tricalcium phosphate (HA-TCP), were implanted into the nude mice subcutaneously and the animal models were constructed to analyze the effect of miR-26a-5p on the osteogenic differentiation of PPDLSCs in vivo. PPDLSCs were divided into A, B, C, D groups, and transfected with miR-26a-5p+Wnt5a-Wt, miR-NC+Wnt5a-Wt, miR-26a-5p+Wnt5a-Mut and miR-NC+Wnt5a-Mut in each of the above mentioned 5 groups, respectively. The luciferase activity assay was used to detect the relative luciferase in A, B, C and D groups to analyze the targeting relationship between miR-26a-5p and Wnt5a. Osteogenic differentiation related proteins expression were analyzed by western blotting. Results: hPDLSC and PPDLSC were observed consistent with the characteristics of mesenchymal stem cells and had osteogenic differentiation ability in vitro. Compared with hPDLSC [(89.87+/-8.12)%], the osteogenic capacity of PPDLSC [(31.46+/-6.56)%] was significantly lower (P<0.05). The ALP activity (1.88+/-0.59), calcified nodules (79.88+/-5.92), the expression of the osteogenic differentiation markers Runt-related transcription factor 2 (Runx2) (2.40+/-0.70), ALP (2.10+/-0.60) and osteocalcin (3.00+/-0.90) mRNA in the PPDLSC from Group Ⅲ were significantly higher in comparison with the control group [(0.88+/-0.34), (29.69+/-2.65), (1.30+/-0.30), (0.09+/-0.25), (1.71+/-0.50)], while those from Group Ⅴ[(0.44+/-0.07), (14.83+/-3.05), (0.50+/-0.11), (0.30+/-0.08) and (0.80+/-0.17)] were significantly lower (P<0.05). In vivo studies in nude mice showed that the proportion of the osteogenic region [(34.96+/-5.65)%] in the miR-26a-5p group was significantly increased in comparison with the control group [(23.28+/-3.03)%], while in the antimiR-26a-5p group [(8.02+/-2.27)%] was significantly lower (P<0.05). The luciferase activity of the Group A (0.46+/-0.06) was significantly lower than Group B (3.46+/-0.45) (P<0.05). Compared with the control group, the expression levels of Wnt5a protein, calmodulin kinase Ⅱ and protein kinase C proteins in the Group Ⅲ were significantly decreased, while those in the GroupⅤ were significantly increased (P<0.05). Conclusions: MicroRNA-26a-5p could promote osteogenic differentiation of PPDLSC in vivo and in vitro, and its mechanism might be inhibiting the activation of Wnt/Ca(2+) signaling pathway by targeting Wnt5a. FAU - Zhang, K K AU - Zhang KK AD - Department of Orthodontics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. FAU - Geng, Y D AU - Geng YD AD - Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. FAU - Wang, S B AU - Wang SB AD - Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. FAU - Huo, L AU - Huo L AD - Department of Orthodontics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. LA - chi PT - Journal Article PL - China TA - Zhonghua Kou Qiang Yi Xue Za Zhi JT - Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology JID - 8711066 RN - 0 (MIRN26A microRNA, human) RN - 0 (MicroRNAs) RN - 0 (WNT5A protein, human) RN - 0 (Wnt-5a Protein) SB - IM MH - Adult MH - Animals MH - Cell Differentiation MH - Humans MH - Male MH - Mice MH - Mice, Nude MH - *MicroRNAs/physiology MH - *Osteogenesis MH - *Periodontal Ligament/metabolism MH - Stem Cells MH - *Wnt-5a Protein/metabolism OTO - NOTNLM OT - Infla- mmatory microenvironment OT - MicroRNAs OT - Osteogenic differentiation OT - Periodontal ligament stem cells EDAT- 2019/10/15 06:00 MHDA- 2019/11/26 06:00 CRDT- 2019/10/15 06:00 PHST- 2019/10/15 06:00 [entrez] PHST- 2019/10/15 06:00 [pubmed] PHST- 2019/11/26 06:00 [medline] AID - 10.3760/cma.j.issn.1002-0098.2019.10.003 [doi] PST - ppublish SO - Zhonghua Kou Qiang Yi Xue Za Zhi. 2019 Oct 9;54(10):662-669. doi: 10.3760/cma.j.issn.1002-0098.2019.10.003.