Open Access

Protective effects of SS31 on t‑BHP induced oxidative damage in 661W cells

  • Authors:
    • Wei Ma
    • Xiaobo Zhu
    • Xiaoyan Ding
    • Tao Li
    • Yijun Hu
    • Xuting Hu
    • Lin Yuan
    • Lei Lei
    • Andina Hu
    • Yan Luo
    • Shibo Tang
  • View Affiliations

  • Published online on: July 7, 2015     https://doi.org/10.3892/mmr.2015.4055
  • Pages: 5026-5034
  • 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 aimed to investigate the ability of SS31, a novel mitochondria‑targeted peptide to protect against t‑BHP‑induced mitochondrial dysfunction and apoptosis in 661W cell lines. The 661W cells were treated with various concentrations of SS‑31 and an MTT assay was used to determine cell viability. The expression of nitrotyrosine and 8‑hydroxydeoxyguanosine (8‑OHdG) was detected using immunofluorescent staining. Apoptosis were assessed using Hoechst staining and an annexin V/propidium iodide flow cytometer. Reactive oxygen species (ROS) were detected using MitoSOXTM with confocal microscopy. Changes in mitochondrial membrane potential were analyzed using flow cytometry. In addition, the release of cytochrome c was analyzed using confocal microscopy. The viability of the cells improved following treatment with SS31 between 100 nM and 1 µM, compared with untreated control group. Compared with the t‑BHP treatment group (20.0±3.8%), the number of annexin V‑positive cells decreased dose‑dependently to 13.6±2.6, 9.8±0.5 and 7.4±2.0% in the SS‑31 treated group at concentrations of 10 nM, 100 nM and 1 µM, respectively. Treatment with SS‑31 significantly prevented the t‑BHP‑induced expression of nitrotyrosine and 8‑OHdG, decreased the quantity of mitochondrial ROS, increased mitochondrial potential, and prevented the release of cytochrome c from mitochondria into the cytoplasm. Therefore, the SS31 mitochondria‑targeted peptide protected the 661W cells from the sustained oxidative stress induced by t‑BHP.
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October-2015
Volume 12 Issue 4

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
Ma W, Zhu X, Ding X, Li T, Hu Y, Hu X, Yuan L, Lei L, Hu A, Luo Y, Luo Y, et al: Protective effects of SS31 on t‑BHP induced oxidative damage in 661W cells. Mol Med Rep 12: 5026-5034, 2015
APA
Ma, W., Zhu, X., Ding, X., Li, T., Hu, Y., Hu, X. ... Tang, S. (2015). Protective effects of SS31 on t‑BHP induced oxidative damage in 661W cells. Molecular Medicine Reports, 12, 5026-5034. https://doi.org/10.3892/mmr.2015.4055
MLA
Ma, W., Zhu, X., Ding, X., Li, T., Hu, Y., Hu, X., Yuan, L., Lei, L., Hu, A., Luo, Y., Tang, S."Protective effects of SS31 on t‑BHP induced oxidative damage in 661W cells". Molecular Medicine Reports 12.4 (2015): 5026-5034.
Chicago
Ma, W., Zhu, X., Ding, X., Li, T., Hu, Y., Hu, X., Yuan, L., Lei, L., Hu, A., Luo, Y., Tang, S."Protective effects of SS31 on t‑BHP induced oxidative damage in 661W cells". Molecular Medicine Reports 12, no. 4 (2015): 5026-5034. https://doi.org/10.3892/mmr.2015.4055