Open Access

Glucosamine promotes chondrocyte proliferation via the Wnt/β‑catenin signaling pathway

  • Authors:
    • Yuhuan Ma
    • Wenwei Zheng
    • Houhuang Chen
    • Xiang Shao
    • Pingdong Lin
    • Xianxiang Liu
    • Xihai Li
    • Hongzhi Ye
  • View Affiliations

  • Published online on: March 22, 2018     https://doi.org/10.3892/ijmm.2018.3587
  • Pages: 61-70
  • Copyright: © Ma et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study investigated the mechanism underlying the effects of glucosamine (GlcN) on the proliferation of chondrocytes isolated from the knee cartilage of Sprague‑Dawley rats. Chondrocytes were treated with various concentrations of GlcN or without GlcN. The effects of GlcN on chondrocyte proliferation were determined using reverse transcription‑polymerase chain reaction, western blot analysis and immunohistochemistry. The results indicated that GlcN significantly improved chondrocyte viability, accelerated G1/S transition during progression of the cell cycle and promoted the expression of cell cycle regulatory proteins, including cyclin D1, cyclin‑dependent kinase (CDK)4 and CDK6, thus indicating that GlcN may promote chondrocyte proliferation. Furthermore, GlcN upregulated the expression levels of Wnt‑4, Frizzled‑2 and β‑catenin, and downregulated the expression of glycogen synthase kinase‑3. GlcN also promoted β‑catenin translocation; β‑catenin is able to activate numerous downstream target genes, including cyclin D1. To determine the role of the Wnt/β‑catenin signaling pathway in chondrocyte proliferation, the Wnt/β‑catenin signaling pathway was inhibited using Dickkopf‑1 (DKK‑1), after which chondrocytes were treated with GlcN. The results demonstrated that the expression levels of β‑catenin and cyclin D1 were decreased in chondrocytes treated with DKK‑1 and GlcN. These results suggested that GlcN may promote chondrocyte proliferation via the Wnt/β‑catenin signaling pathway.
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July-2018
Volume 42 Issue 1

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Copy and paste a formatted citation
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Spandidos Publications style
Ma Y, Zheng W, Chen H, Shao X, Lin P, Liu X, Li X and Ye H: Glucosamine promotes chondrocyte proliferation via the Wnt/β‑catenin signaling pathway. Int J Mol Med 42: 61-70, 2018.
APA
Ma, Y., Zheng, W., Chen, H., Shao, X., Lin, P., Liu, X. ... Ye, H. (2018). Glucosamine promotes chondrocyte proliferation via the Wnt/β‑catenin signaling pathway. International Journal of Molecular Medicine, 42, 61-70. https://doi.org/10.3892/ijmm.2018.3587
MLA
Ma, Y., Zheng, W., Chen, H., Shao, X., Lin, P., Liu, X., Li, X., Ye, H."Glucosamine promotes chondrocyte proliferation via the Wnt/β‑catenin signaling pathway". International Journal of Molecular Medicine 42.1 (2018): 61-70.
Chicago
Ma, Y., Zheng, W., Chen, H., Shao, X., Lin, P., Liu, X., Li, X., Ye, H."Glucosamine promotes chondrocyte proliferation via the Wnt/β‑catenin signaling pathway". International Journal of Molecular Medicine 42, no. 1 (2018): 61-70. https://doi.org/10.3892/ijmm.2018.3587