PMID- 31168988 OWN - NLM STAT- MEDLINE DCOM- 20190826 LR - 20231113 IS - 2618-0456 (Electronic) IS - 1000-1182 (Print) IS - 1000-1182 (Linking) VI - 37 IP - 2 DP - 2019 Apr 1 TI - [MicroRNA-29a-3p regulates osteoblast differentiation and peri-implant osseointegration in a rat model of hyperlipidemia by modulating Frizzled 4 expression]. PG - 200-207 LID - 10.7518/hxkq.2019.02.013 [doi] AB - OBJECTIVE: This work aimed to study and identify the influence and target gene of microRNA-29a-3p (miR-29a-3p) in the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) in a high-fat environment in vitro and in vivo. METHODS: 1) In vitro: BMSCs were randomly allocated into two groups and were then induced to undergo osteogenic differentiation in a normal or high-fat environment. Next, a miR-29a-3p mimic/inhibitor was transfected into the two groups of cells. The mRNA expression levels of alkaline phosphatase (ALP), Runt related gene 2 (Runx2), and miR-29a-3p and the protein expression levels of ALP and Runx2 were detected before and after transfection through reverse transcription-quantitative real-time polymerase chain reaction (RT-qPCR) and Western blot analyses. Moreover, Frizzled (Fzd) 4 was predicted as the target gene of miR-29a-3p by using an online database (Target Scan, MiRNA.org). The interactive relationship between miR-29a-3p and Fzd4 was confirmed through dual-luciferase assays. 2) In vivo: Rats were randomly divided into two groups and fed with a standard or high-fat diet. Titanium implants were grown in rats. Then, the expression levels of miR-29a-3p, ALP, and Runx2 were detected in bone tissues surrounding implants. Moreover, hard tissue sections were subjected to methylene blue-acid magenta staining and observed under microscopy to study bone formation around implants. In addition, miR-29a-3p-overexpressing lentiviral vectors were transfected into rats, and the expression levels of ALP, Runx2, and miR-29a-3p in bone tissues surrounding implants were detected at 3 and 10 days after transfection. RESULTS: The expression levels of ALP, Runx2, and miR-29a-3p and the osteogenic differentiation of BMSCs were suppressed in high-fat groups in vitro and in vivo. CONCLUSIONS: MiR-29a-3p plays a positive role in the regulation of BMSCs in a high-fat environment. It can increase ALP and Runx2 expression levels in bone tissues surrounding implants in hyperlipidemia models. This result implies that miR-29a-3p can promote implant osseointergration in a rat model of hyperlipidemia. FAU - Liu, Fei AU - Liu F AD - Dept. of Prosthodontics, School of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China. FAU - Wang, Zhi-Feng AU - Wang ZF AD - Dept. of Pediatric Dentistry, School of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China. FAU - Liu, Fang-Fang AU - Liu FF AD - Dept. of Dental Implantology, Stomatological Hospital of Nanyang, Nanyang 473000, China. FAU - Xu, Jin-Zhao AU - Xu JZ AD - Dept. of Pediatric Dentistry, School of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China. FAU - Liu, Qibo AU - Liu Q AD - Dept. of Prosthodontics, School of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China. FAU - Lan, Jing AU - Lan J AD - Dept. of Prosthodontics, School of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, China. LA - chi PT - Journal Article PL - China TA - Hua Xi Kou Qiang Yi Xue Za Zhi JT - Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology JID - 9422648 RN - 0 (Dental Implants) RN - 0 (MicroRNAs) MH - Animals MH - *Cell Differentiation MH - *Dental Implants MH - *Hyperlipidemias MH - *MicroRNAs MH - Osseointegration MH - Osteoblasts MH - *Osteogenesis MH - Random Allocation MH - Rats PMC - PMC7030145 OTO - NOTNLM OT - Frizzled 4 OT - dual luciferase reporter gene OT - hyperlipidemia OT - microRNA-29a-3p OT - osteointegration EDAT- 2019/06/07 06:00 MHDA- 2019/08/27 06:00 PMCR- 2019/04/01 CRDT- 2019/06/07 06:00 PHST- 2019/06/07 06:00 [entrez] PHST- 2019/06/07 06:00 [pubmed] PHST- 2019/08/27 06:00 [medline] PHST- 2019/04/01 00:00 [pmc-release] AID - wcjs-37-02-200 [pii] AID - 10.7518/hxkq.2019.02.013 [doi] PST - ppublish SO - Hua Xi Kou Qiang Yi Xue Za Zhi. 2019 Apr 1;37(2):200-207. doi: 10.7518/hxkq.2019.02.013.