Abstract
Background
Chondroitin sulfate (CS) is found in humans’ cartilage, bone, cornea, skin, and arterial wall. It consists of the foundation substance in the extracellular matrix (ECM) of connective tissue. The oral supplement form of CS is clinically used in treating osteoarthritis (OA).
Methods
Cell migration was observed by the transwell assay. The EMT, Akt/IKK/IϰB pathways, TIMPs, collagen and MMPs in cell lysate were determined by Western blotting. The expression of MMP activity was determined by gelatin zymography. The production of reactive oxygen species (ROS) was determined by using a fluorescence spectrophotometer.
Results
In the current report, we demonstrated that CS can increase the cell proliferation and migration of chon-001 chondrocytes. Treatment with CS induced the epithelial—mesenchymal transition and increased the expression of type II collagen and TIMP-1/TIMP2 and inhibited the expressions and activities of metalloproteinase-9 (MMP-9) and metalloproteinase-2 (MMP-2). The phosphorylation of Akt, IϰB kinase (IKK), IϰB and p65 was decreased by CS. CS treatment resulted in β-catenin production and XAV939, a β-catenin inhibitor, and inhibited the cell proliferation by CS treatment. In addition, also significantly induced intracellular ROS generation. Treatment with antioxidant propyl gallate blocked cell migration induced by CS.
Conclusion
We demonstrated that CS induced cell proliferation and migration of chondrocytes by inducing β-catenin and enhancing ROS production. Moreover, our studies demonstrated that CS can increase the activity of chondrocytes and help patients with osteoarthritis to restore cartilage function.
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Funding: Funding for the work was supported by the Chang Gung Memorial Hospital Research Project Grant, Taiwan [grant numbers CMRPG6J0411; CMRPG670261; CMRPG690482].
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Hsu, HC., Ke, YL., Lai, YH. et al. Chondroitin Sulfate Enhances Proliferation and Migration via Inducing β-Catenin and Intracellular ROS as Well as Suppressing Metalloproteinases through Akt/NF-ϰB Pathway Inhibition in Human Chondrocytes. J Nutr Health Aging 26, 307–313 (2022). https://doi.org/10.1007/s12603-022-1752-5
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DOI: https://doi.org/10.1007/s12603-022-1752-5