Related Experiment Video
Updated: Jul 30, 2026
Rapid Isolation of BMPR-IB+ Adipose-Derived Stromal Cells for Use in a Calvarial Defect Healing Model
Published on: February 24, 2017
miR-468-3p suppresses osteogenic differentiation of BMSCs by targeting Runx2 and inhibits bone formation
Tao Fang1, Ranxi Zhang2, Feng Song1
1Department of Orthopedic Surgery, Qingdao Municipal Hospital, Qingdao, Shandong, 266000, China.
Abstract:
An improved understanding of the molecular actions underpinning bone marrow mesenchymal stem cell (BMSC) differentiation could highlight new therapeutics for osteoporosis (OP). Current evidence indicates that microRNAs (miRNAs) exert critical roles in many biological systems, including osteoblast differentiation. In this study, we examined miR-468-3p effects on osteogenic differentiation (OD). Distinct miR-468-3p reductions were identified during OD. MiR-468-3p also suppressed BMSC OD in gain- and loss-of-function assays, while it negatively regulated Runx2 as shown by molecular, protein, and bioinformatics approaches. When Runx2 was inhibited by small-interfering RNA (siRNA), the inhibitory effects of miR-468-3p toward BMSC osteogenesis were considerably reversed. Also, silenced miR-468-3p in ovariectomized (OVX) and sham mice augmented bone mass (BM) and bone formation (BF) and improved trabecular (Tb) microarchitecture. Therefore, miR-468-3p is a novel Runx2 regulator with key physiological action in BF and OD.
Insights
MicroRNAs (miRNAs) like miR-468-3p play a role in bone marrow mesenchymal stem cell (BMSC) differentiation. Lowering miR-468-3p levels promotes bone formation, suggesting therapeutic potential for osteoporosis.
Area of Science:
- Molecular Biology
- Stem Cell Biology
- Bone Biology
Background:
- MicroRNAs (miRNAs) are crucial regulators of biological processes, including osteoblast differentiation.
- Understanding the molecular mechanisms of bone marrow mesenchymal stem cell (BMSC) differentiation is key for developing osteoporosis (OP) therapeutics.
Purpose of the Study:
- To investigate the role of miR-468-3p in osteogenic differentiation (OD) of BMSCs.
- To identify miR-468-3p as a potential therapeutic target for bone diseases.
Main Methods:
- Assessed miR-468-3p expression during OD.
- Performed gain- and loss-of-function assays to evaluate miR-468-3p's impact on BMSC OD.
- Utilized molecular, protein, and bioinformatics analyses to determine miR-468-3p's interaction with Runx2.
- Investigated the effects of miR-468-3p silencing in an ovariectomized (OVX) mouse model.
Main Results:
- miR-468-3p levels decreased during BMSC osteogenic differentiation.
- miR-468-3p suppressed BMSC osteogenic differentiation.
- miR-468-3p negatively regulated Runx2 expression.
- Silencing miR-468-3p in OVX mice increased bone mass, bone formation, and improved trabecular microarchitecture.
Conclusions:
- miR-468-3p is a novel regulator of Runx2, impacting bone formation and osteogenic differentiation.
- Targeting miR-468-3p may offer a new therapeutic strategy for osteoporosis and related bone disorders.
More Related Videos
08:58Isolation and Cultivation of Mandibular Bone Marrow Mesenchymal Stem Cells in Rats
Published on: August 25, 2020
10:32Author Spotlight: Simple Establishment of a Vascularized Osteogenic Bone Marrow Niche Using Pre-Cast Poly(Ethylene Glycol) (PEG) Hydrogels in an Imaging Microplate
Published on: May 19, 2023
