Open Access

Wnt-β-catenin signaling pathway inhibition by sclerostin may protect against degradation in healthy but not osteoarthritic cartilage

  • Authors:
    • Jiang Wu
    • Long Ma
    • Long Wu
    • Qunhua Jin
  • View Affiliations

  • Published online on: March 3, 2017     https://doi.org/10.3892/mmr.2017.6278
  • Pages: 2423-2432
  • Copyright: © Wu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present study was to determine the regulation of sclerostin (SOST) in osteoarthritis (OA) and its effect on articular cartilage degradation. Human cartilage samples from healthy and OA subjects were assessed by Safranin O staining and immunohistochemistry. Primary chondrocytes were pre‑incubated with 250 ng/ml SOST, 10 ng/ml interleukin‑1‑α (IL‑1α) or a combination of the two. The effects of treatment on the Wnt-β-catenin signaling pathway and cartilage degradation were examined by reverse transcription‑quantitative polymerase chain reaction and western blotting. SOST was detected in the cartilage focal area, demonstrating secretion by osteocytes and chondrocytes. SOST has been identified to inhibit the Wnt-β-catenin signaling pathway by binding to low‑density lipoprotein‑related receptors 5 and 6, and catabolic factors were decreased in healthy chondrocytes. However, SOST did not influence human OA chondrocytes. IL‑1α activated the Wnt-β-catenin signaling pathway and promoted cartilage degradation, which was inhibited by SOST in healthy and OA cartilage. The results of the present study suggested that SOST is important in maintaining the integrity of healthy, but not end‑stage OA, cartilage.
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May-2017
Volume 15 Issue 5

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Copy and paste a formatted citation
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Spandidos Publications style
Wu J, Ma L, Wu L and Jin Q: Wnt-β-catenin signaling pathway inhibition by sclerostin may protect against degradation in healthy but not osteoarthritic cartilage. Mol Med Rep 15: 2423-2432, 2017.
APA
Wu, J., Ma, L., Wu, L., & Jin, Q. (2017). Wnt-β-catenin signaling pathway inhibition by sclerostin may protect against degradation in healthy but not osteoarthritic cartilage. Molecular Medicine Reports, 15, 2423-2432. https://doi.org/10.3892/mmr.2017.6278
MLA
Wu, J., Ma, L., Wu, L., Jin, Q."Wnt-β-catenin signaling pathway inhibition by sclerostin may protect against degradation in healthy but not osteoarthritic cartilage". Molecular Medicine Reports 15.5 (2017): 2423-2432.
Chicago
Wu, J., Ma, L., Wu, L., Jin, Q."Wnt-β-catenin signaling pathway inhibition by sclerostin may protect against degradation in healthy but not osteoarthritic cartilage". Molecular Medicine Reports 15, no. 5 (2017): 2423-2432. https://doi.org/10.3892/mmr.2017.6278