Naringin promotes differentiation of bone marrow stem cells into osteoblasts by upregulating the expression levels of microRNA‑20a and downregulating the expression levels of PPARγ

Fan,Jifeng; Li,Jie; Fan,Qinbo

doi:10.3892/mmr.2015.3996

Naringin promotes differentiation of bone marrow stem cells into osteoblasts by upregulating the expression levels of microRNA‑20a and downregulating the expression levels of PPARγ

Authors:
- Jifeng Fan
- Jie Li
- Qinbo Fan
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Affiliations: Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
Published online on: June 24, 2015 https://doi.org/10.3892/mmr.2015.3996
Pages: 4759-4765

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Abstract

Naringin is a dihydrotestosterone flavonoid compound that significantly inhibits bone loss, improves bone density, and enhances biomechanical anti‑compression performance. Previous studies have demonstrated that naringin improves the activity levels of osteocalcin (OC) and alkaline phosphatase (ALP) in MC3T3‑E1 osteoblast precursor cells. The present study investigated the effects of naringin on osteoblastic differentiation and inhibition of adipocyte formation in bone marrow stem cells (BMSCs). The levels of osteogenesis were modulated via upregulation of the expression levels of microRNA (miR)‑20a, and downregulation of the expression levels of peroxisome proliferator‑activated receptor γ (PPARγ). The results indicated that naringin significantly enhanced BMSC proliferation in a dose‑dependent manner. In addition, naringin significantly increased the mRNA expression levels of OC, ALP, and collagen type I. Furthermore, naringin decreased the protein expression levels of PPARγ, and increased the expression levels of miR‑20a in the BMSCs. These results suggested that miR‑20a may regulate the expression of PPARγ in BMSCs. To our knowledge, this is the first study to report naringin‑induced osteogenesis via upregulation of the expression levels of miR‑20a, and downregulation of the expression levels of PPARγ. These results indicated the important role of naringin in BMSC differentiation.

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