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Article

Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes

  • Authors:
    • Huiting Li
    • Xihai Li
    • Guozhong Liu
    • Jiashou Chen
    • Xiaping Weng
    • Fayuan Liu
    • Huifeng Xu
    • Xianxiang Liu
    • Hongzhi Ye
  • View Affiliations / Copyright

    Affiliations: Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350002, P.R. China, Fujian Provincial Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
  • Pages: 1329-1336
    |
    Published online on: October 14, 2013
       https://doi.org/10.3892/ijmm.2013.1527
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Abstract

Bauhinia championi (Benth.) Benth. polysaccharides (BCBPs), extracted from Bauhinia championi (Benth.) Benth., which has been used in traditional Chinese medicine (TCM) for the treatment of osteoarthritis (OA), are the bioactive constituents of Bauhinia championi (Benth.) rattan. However, the molecular mechanisms responsible for their effects on OA are poorly understood. The Wnt/β-catenin signaling pathway plays an important role in the proliferation of chondrocytes. In the present study, the effects of BCBPs on Wnt/β-catenin signaling in chondrocytes were investigated. BCBPs were obtained by hot-water extraction and identified by the modified high performance liquid chromatography (HPLC) method. Chondrocytes were isolated from the knees of Sprague‑Dawley rats and identified by type II collagen immunohistochemistry. The chondrocytes were treated with or without BCBPs for 48 h. Cell viability was evaluated by MTT assay. The mRNA and protein levels of Wnt-4, β-catenin, Frizzled-2, glycogen synthase kinase (GSK)-3β, cyclin D1 and collagen II were detected by western blot analysis and reverse transcription PCR (RT-PCR), respectively. We found that the BCBPs contained at least seven monosaccharides, including D-mannose, rhamnose, D-(+) glucuronic acid, D-(+) galacturonic acid, D-glucose, galactose and arabinose. The cell viability of the chondrocytes treated with 50, 100 and 200 µg/ml BCBPs was significantly higher than that of the chondroctyes in the control group (treated with 0 µg/ml BCBPs). Furthermore, compared with the control group, the mRNA and protein expression of Wnt-4, β-catenin, Frizzled-2 and cyclin D1 in the BCBP-treated groups markedly increased, whereas the mRNA and protein expression of GSK-3β significantly decreased. Of note, the dose of 100 µg/ml BCBPs was more effective than the dose of 50 µg/ml BCBPs and 200 µg/ml BCBPs. In addition, we found that treatment with BCBPs upregulated the protein levels of collagen II in the chondrocytes. These results indicate that BCBPs upregulate Wnt/β-catenin signaling, thus promoting chondrocyte proliferation.
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Copy and paste a formatted citation
Spandidos Publications style
Li H, Li X, Liu G, Chen J, Weng X, Liu F, Xu H, Liu X and Ye H: Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes. Int J Mol Med 32: 1329-1336, 2013.
APA
Li, H., Li, X., Liu, G., Chen, J., Weng, X., Liu, F. ... Ye, H. (2013). Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes. International Journal of Molecular Medicine, 32, 1329-1336. https://doi.org/10.3892/ijmm.2013.1527
MLA
Li, H., Li, X., Liu, G., Chen, J., Weng, X., Liu, F., Xu, H., Liu, X., Ye, H."Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes". International Journal of Molecular Medicine 32.6 (2013): 1329-1336.
Chicago
Li, H., Li, X., Liu, G., Chen, J., Weng, X., Liu, F., Xu, H., Liu, X., Ye, H."Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes". International Journal of Molecular Medicine 32, no. 6 (2013): 1329-1336. https://doi.org/10.3892/ijmm.2013.1527
Copy and paste a formatted citation
x
Spandidos Publications style
Li H, Li X, Liu G, Chen J, Weng X, Liu F, Xu H, Liu X and Ye H: Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes. Int J Mol Med 32: 1329-1336, 2013.
APA
Li, H., Li, X., Liu, G., Chen, J., Weng, X., Liu, F. ... Ye, H. (2013). Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes. International Journal of Molecular Medicine, 32, 1329-1336. https://doi.org/10.3892/ijmm.2013.1527
MLA
Li, H., Li, X., Liu, G., Chen, J., Weng, X., Liu, F., Xu, H., Liu, X., Ye, H."Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes". International Journal of Molecular Medicine 32.6 (2013): 1329-1336.
Chicago
Li, H., Li, X., Liu, G., Chen, J., Weng, X., Liu, F., Xu, H., Liu, X., Ye, H."Bauhinia championi (Benth.) Benth. polysaccharides upregulate Wnt/β-catenin signaling in chondrocytes". International Journal of Molecular Medicine 32, no. 6 (2013): 1329-1336. https://doi.org/10.3892/ijmm.2013.1527
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