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MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects

  • Authors:
    • Zhenlin Wang
    • Dawei Zhang
    • Zhiqiang Hu
    • Jiwei Cheng
    • Chuanmeng Zhuo
    • Xiancong Fang
    • Yongming Xing
  • View Affiliations / Copyright

    Affiliations: Department of Orthopaedics, No. 113 Hospital of PLA, Ningbo, Zhejiang 315000, P.R. China, Department of Orthopaedics, Xijing Hospital of PLA, Xi'an, Shaanxi 710032, P.R. China, Department of Otorhinolaryngology, No. 113 Hospital of PLA, Ningbo, Zhejiang 315000, P.R. China
    Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].
  • Pages: 3345-3350
    |
    Published online on: May 18, 2015
       https://doi.org/10.3892/mmr.2015.3795
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Abstract

Tissue-engineered bone substitutes are frequently used to repair bone defects. Adipose-derived stem cells (ASCs) are a promising source of cells for repairing bone tissue, however, insufficient osteogenic potency remains the main obstacle for their application. The present study aimed to enhance the osteogenic potency of ASCs by transfection of microRNA (miR)‑26a, a novel osteogenic and angiogenic promoting miRNA. An inverted fluorescence microscope was used to observe transfection efficiency, while a scanning electron microscope was used to detect morphological alterations. Cell proliferation was monitored continuously for 7 days using a Cell Counting kit‑8 assay. Osteogenic differentiation was determined by reverse transcription quantitative polymerase chain reaction, alkaline phosphatase (ALP) staining, collagen secretion and extracellular matrix (ECM) mineralization. ASCs were incorporated with a porous hydroxyapatite (HA) scaffold to create a novel tissue‑engineered bone substitute and inserted into the critical tibia defect of rats. New bone formation was evaluated by hematoxylin and eosin and Masson's trichrome staining. The results demonstrated that miR‑26a was successfully delivered into the cytoplasm, while the morphology and proliferation of ASCs were not significantly altered. Osteogenic‑associated genes were markedly upregulated and ALP production, collagen secretion and ECM mineralization were all increased following transfection of miR‑26a. Histological evaluation demonstrated that the modified cells accompanied with a porous HA scaffold markedly promoted new bone formation within the defective area. In conclusion, miR‑26a transfection significantly improved the osteogenic potency of ASCs suggesting that modified ASCs incorporated with a HA scaffold may be used as a potential bone substitute.
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Copy and paste a formatted citation
Spandidos Publications style
Wang Z, Zhang D, Hu Z, Cheng J, Zhuo C, Fang X and Xing Y: MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects. Mol Med Rep 12: 3345-3350, 2015.
APA
Wang, Z., Zhang, D., Hu, Z., Cheng, J., Zhuo, C., Fang, X., & Xing, Y. (2015). MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects. Molecular Medicine Reports, 12, 3345-3350. https://doi.org/10.3892/mmr.2015.3795
MLA
Wang, Z., Zhang, D., Hu, Z., Cheng, J., Zhuo, C., Fang, X., Xing, Y."MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects". Molecular Medicine Reports 12.3 (2015): 3345-3350.
Chicago
Wang, Z., Zhang, D., Hu, Z., Cheng, J., Zhuo, C., Fang, X., Xing, Y."MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects". Molecular Medicine Reports 12, no. 3 (2015): 3345-3350. https://doi.org/10.3892/mmr.2015.3795
Copy and paste a formatted citation
x
Spandidos Publications style
Wang Z, Zhang D, Hu Z, Cheng J, Zhuo C, Fang X and Xing Y: MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects. Mol Med Rep 12: 3345-3350, 2015.
APA
Wang, Z., Zhang, D., Hu, Z., Cheng, J., Zhuo, C., Fang, X., & Xing, Y. (2015). MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects. Molecular Medicine Reports, 12, 3345-3350. https://doi.org/10.3892/mmr.2015.3795
MLA
Wang, Z., Zhang, D., Hu, Z., Cheng, J., Zhuo, C., Fang, X., Xing, Y."MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects". Molecular Medicine Reports 12.3 (2015): 3345-3350.
Chicago
Wang, Z., Zhang, D., Hu, Z., Cheng, J., Zhuo, C., Fang, X., Xing, Y."MicroRNA-26a-modified adipose-derived stem cells incorporated with a porous hydroxyapatite scaffold improve the repair of bone defects". Molecular Medicine Reports 12, no. 3 (2015): 3345-3350. https://doi.org/10.3892/mmr.2015.3795
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