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Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation

  • Authors:
    • Zhongfu Zhao
    • Xiaoguang Li
    • Dexun Zou
    • Yongyun Lian
    • Shaohua Tian
    • Zhi Dou
  • View Affiliations / Copyright

    Affiliations: Department of Orthopaedic Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China, Department of Orthopaedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China, Department of Orthopaedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China, Department of Orthopaedics (Ⅱ), The First Hospital of Qiqihar City, Qiqihar, Heilongjiang 161005, P.R. China
    Copyright: © Zhao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 709-714
    |
    Published online on: November 21, 2018
       https://doi.org/10.3892/etm.2018.6998
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Abstract

Expression of microRNA‑21 in bone tissue and serum of patients with osteoporosis (OP) and its involvement in the regulation of osteogenic differentiation of rat bone marrow mesenchymal stem cells (BMSCs) were investigated. Bone tissue and serum were collected from 48 patients with OP and 48 normal subjects. Reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) was used to detect the expression of six microRNAs. Among these microRNAs, the expression level of microRNA‑21 in bone tissue and serum of OP patients was the lowest. In addition, BMSCs of SD rats were isolated and cultured. Subculture was performed 3 times, transfection of microRNA‑21 was performed and osteogenic differentiation was induced. Control group [negative control (NC)] was transfected with microRNA‑21 mimics followed by osteogenic induction. Experimental groups were transfected with microRNA‑21 analogue (mimics) and microRNA‑21 inhibitor (inhibitor) followed by osteogenic induction. Ten days after osteogenic induction, alkaline phosphatase (ALP) staining and alizarin red staining were performed to measure the mineralized stained area and the number of mineralized nodules in each treatment group. RT‑qPCR was used to detect the expression of osteogenic genes in each group of cells. RT‑qPCR results showed that microRNA‑21 expression was lower in bone tissue and serum of patients with OP than that of normal subjects. Moreover, compared with control group, BMSCs showed increased stained mineralized areas, deeper color and increased number of mineralized nodules. In addition, increased mRNA expression of osteogenic genes was evident after microRNA‑21 mimics transfection and osteogenic induction (p<0.05). Compared with control group, BMSCs showed decreased stained mineralized areas, lighter color, decreased number of mineralized nodules, and decreased mRNA expression of osteogenic genes after microRNA‑21 inhibitor transfection and osteogenic induction (p<0.05). MicroRNA‑21 is expressed at low level in bone tissue and serum in patients with OP, and microRNA‑21 can promote osteogenic differentiation of BMSCs. Our study provided theoretical basis for drug treatment of OP.
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Copy and paste a formatted citation
Spandidos Publications style
Zhao Z, Li X, Zou D, Lian Y, Tian S and Dou Z: Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation. Exp Ther Med 17: 709-714, 2019.
APA
Zhao, Z., Li, X., Zou, D., Lian, Y., Tian, S., & Dou, Z. (2019). Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation. Experimental and Therapeutic Medicine, 17, 709-714. https://doi.org/10.3892/etm.2018.6998
MLA
Zhao, Z., Li, X., Zou, D., Lian, Y., Tian, S., Dou, Z."Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation". Experimental and Therapeutic Medicine 17.1 (2019): 709-714.
Chicago
Zhao, Z., Li, X., Zou, D., Lian, Y., Tian, S., Dou, Z."Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation". Experimental and Therapeutic Medicine 17, no. 1 (2019): 709-714. https://doi.org/10.3892/etm.2018.6998
Copy and paste a formatted citation
x
Spandidos Publications style
Zhao Z, Li X, Zou D, Lian Y, Tian S and Dou Z: Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation. Exp Ther Med 17: 709-714, 2019.
APA
Zhao, Z., Li, X., Zou, D., Lian, Y., Tian, S., & Dou, Z. (2019). Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation. Experimental and Therapeutic Medicine, 17, 709-714. https://doi.org/10.3892/etm.2018.6998
MLA
Zhao, Z., Li, X., Zou, D., Lian, Y., Tian, S., Dou, Z."Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation". Experimental and Therapeutic Medicine 17.1 (2019): 709-714.
Chicago
Zhao, Z., Li, X., Zou, D., Lian, Y., Tian, S., Dou, Z."Expression of microRNA‑21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation". Experimental and Therapeutic Medicine 17, no. 1 (2019): 709-714. https://doi.org/10.3892/etm.2018.6998
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