Open Access

Methylsulfonylmethane inhibits cortisol‑induced stress through p53‑mediated SDHA/HPRT1 expression in racehorse skeletal muscle cells: A primary step against exercise stress

  • Authors:
    • Nipin Sp
    • Dong Young Kang
    • Do Hoon Kim
    • Hyo Gun Lee
    • Yeong‑Min Park
    • Il Ho Kim
    • Hak Kyo Lee
    • Byung‑Wook Cho
    • Kyoung‑Jin Jang
    • Young Mok Yang
  • View Affiliations

  • Published online on: November 13, 2019     https://doi.org/10.3892/etm.2019.8196
  • Pages: 214-222
  • Copyright: © Sp et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Cortisol is a hormone involved in stress during exercise. The application of natural compounds is a new potential approach for controlling cortisol‑induced stress. Tumour suppressor protein p53 is activated during cellular stress. Succinate dehydrogenase complex subunit A (SDHA) and hypoxanthine phosphoribosyl transferase 1 (HPRT1) are considered to be two of the most stable reference genes when measuring stress during exercise in horses. In the present study cells were considered to be in a ʻstressed stateʼ if the levels of these stable genes and the highly stress responsive gene p53 were altered. It was hypothesized that a natural organic sulphur‑containing compound, methylsulfonylmethane (MSM), could inhibit cortisol‑induced stress in racing horse skeletal muscle cells by regulating SDHA, HPRT1 and p53 expression. After assessing cell viability using MTT assays, 20 µg/ml cortisol and 50 mM MSM were applied to horse skeletal muscle cell cultures. Reverse transcription‑quantitative PCR and western blot analysis demonstrated increases in SDHA, HPRT1 and p53 expression in cells in response to cortisol treatment, which was inhibited or normalized by MSM treatment. To determine the relationship between p53 and SDHA/HPRT1 expression at a transcriptional level, horse gene sequences of SDHA and HPRT1 were probed to identify novel binding sites for p53 in the gene promoters, which were confirmed using a chromatin immunoprecipitation assay. The relationship between p53 and SDHA/HPRT1 expression was confirmed using western blot analysis following the application of pifithrin‑α, a p53 inhibitor. These results suggested that MSM is a potential candidate drug for the inhibition of cortisol‑induced stress in racehorse skeletal muscle cells.
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January-2020
Volume 19 Issue 1

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Sp N, Kang DY, Kim DH, Lee HG, Park YM, Kim IH, Lee HK, Cho BW, Jang KJ, Yang YM, Yang YM, et al: Methylsulfonylmethane inhibits cortisol‑induced stress through p53‑mediated SDHA/HPRT1 expression in racehorse skeletal muscle cells: A primary step against exercise stress. Exp Ther Med 19: 214-222, 2020
APA
Sp, N., Kang, D.Y., Kim, D.H., Lee, H.G., Park, Y., Kim, I.H. ... Yang, Y.M. (2020). Methylsulfonylmethane inhibits cortisol‑induced stress through p53‑mediated SDHA/HPRT1 expression in racehorse skeletal muscle cells: A primary step against exercise stress. Experimental and Therapeutic Medicine, 19, 214-222. https://doi.org/10.3892/etm.2019.8196
MLA
Sp, N., Kang, D. Y., Kim, D. H., Lee, H. G., Park, Y., Kim, I. H., Lee, H. K., Cho, B., Jang, K., Yang, Y. M."Methylsulfonylmethane inhibits cortisol‑induced stress through p53‑mediated SDHA/HPRT1 expression in racehorse skeletal muscle cells: A primary step against exercise stress". Experimental and Therapeutic Medicine 19.1 (2020): 214-222.
Chicago
Sp, N., Kang, D. Y., Kim, D. H., Lee, H. G., Park, Y., Kim, I. H., Lee, H. K., Cho, B., Jang, K., Yang, Y. M."Methylsulfonylmethane inhibits cortisol‑induced stress through p53‑mediated SDHA/HPRT1 expression in racehorse skeletal muscle cells: A primary step against exercise stress". Experimental and Therapeutic Medicine 19, no. 1 (2020): 214-222. https://doi.org/10.3892/etm.2019.8196