Inhibition of protein kinase CK2 facilitates cellular senescence by inhibiting the expression of HO-1 in articular chondrocytes

  • Authors:
    • Kang Mi Kim
    • Dong Hyun Sohn
    • Koanhoi Kim
    • Young Chul Park
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  • Published online on: December 4, 2018     https://doi.org/10.3892/ijmm.2018.4016
  • Pages: 1033-1040
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Abstract

Protein kinase casein kinase 2 (CK2) is important in the regulation of cell proliferation and death, even under pathological conditions. Previously, we reported that CK2 regulates the expression of heme oxygenase‑1 (HO‑1) in stress‑induced chondrocytes. In the present study, it was shown that CK2 is involved in the dedifferentiation and cellular senescence of chondrocytes. Treatment of primary articular chondrocytes with CK2 inhibitors, 4,5,6,7‑terabromo‑2‑azabenzimidazole (TBB) or 5,6‑dichlorobenzimidazole 1‑β‑D‑ribofuranoside (DRB), induced an increase in senescence‑associated β‑galactosidase (SA‑β‑gal) staining. In addition, TBB reduced the expression of type II collagen and stimulated the accumulation of β‑catenin, phenotypic markers of chondrocyte differentiation and dedifferentiation, respectively. It was also observed that the abrogation of CK2 activity by CK2 small interfering RNA induced phenotypes of chondrocyte senescence. The association between HO‑1 and cellular senescence was also examined in CK2 inhibitor‑treated chondrocytes. Pretreatment with 3‑morpholinosydnonimine hydrochloride, an inducer of the HO‑1 expression, or overexpression of the HO‑1 gene significantly delayed chondrocyte senescence. These results show that CK2 is associated with chondrocyte differentiation and cellular senescence and that this is due to regulation of the expression of HO‑1. Furthermore, the findings suggest that CK2 is crucial as an anti‑aging factor during chondrocyte senescence.
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February-2019
Volume 43 Issue 2

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

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Spandidos Publications style
Kim KM, Sohn DH, Kim K and Park YC: Inhibition of protein kinase CK2 facilitates cellular senescence by inhibiting the expression of HO-1 in articular chondrocytes. Int J Mol Med 43: 1033-1040, 2019
APA
Kim, K.M., Sohn, D.H., Kim, K., & Park, Y.C. (2019). Inhibition of protein kinase CK2 facilitates cellular senescence by inhibiting the expression of HO-1 in articular chondrocytes. International Journal of Molecular Medicine, 43, 1033-1040. https://doi.org/10.3892/ijmm.2018.4016
MLA
Kim, K. M., Sohn, D. H., Kim, K., Park, Y. C."Inhibition of protein kinase CK2 facilitates cellular senescence by inhibiting the expression of HO-1 in articular chondrocytes". International Journal of Molecular Medicine 43.2 (2019): 1033-1040.
Chicago
Kim, K. M., Sohn, D. H., Kim, K., Park, Y. C."Inhibition of protein kinase CK2 facilitates cellular senescence by inhibiting the expression of HO-1 in articular chondrocytes". International Journal of Molecular Medicine 43, no. 2 (2019): 1033-1040. https://doi.org/10.3892/ijmm.2018.4016