Oligomeric proanthocyanidins protects A549 cells against H2O2-induced oxidative stress via the Nrf2-ARE pathway

  • Authors:
    • Chao Sun
    • Weiguo Jin
    • Hongcan Shi
  • View Affiliations

  • Published online on: April 27, 2017     https://doi.org/10.3892/ijmm.2017.2971
  • Pages: 1548-1554
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Abstract

Oxidative signaling and oxidative stress contribute to aging, cancer and diseases resulting from lung fibrosis. In this study, we explored the anti-oxidative potential of oligomeric proanthocyanidins (OPCs), natural flavonoid compounds. We examined the protective effects of OPCs against hydrogen peroxide (H2O2)-induced oxidative stress in non-small cell lung cancer cells (A549). We demonstrated that OPC markedly attenuated H2O2-induced A549 cell viability, as shown by by 3-[4,5-dimethylthiazol-2-yl)]-2,5-diphenyl-tetrazolium bromide (MTT) assay. At the same time, OPC inhibited H2O2-induced oxidative stress by significantly increasing the activities of superoxide dismutase, catalase and glutathione, and reducing the levels of reactive oxygen species (ROS) and malondialdehyde (MDA). Treatment of the A549 cells with OPC significantly promoted the nuclear translocation of NF-E2-related factor 2 (Nrf2) and significantly enhanced the expression of its target genes [heme oxygenase-1 (HO-1), NAD(P)H quinone dehydrogenase 1 (NQO1) and thioredoxin reductase 1 (TXNRD1)] with different fold change values at both the mRNA and protein level. The knockout of Nrf2 using CRISPR/Cas9 technology attenuated OPC-mediated ARE gene transcription, and almost abolished the OPC-mediated protective effects against H2O2-induced oxidative stress. On the whole, our study suggests that OPC plays an important role in controlling the antioxidant response of A549 cells via the Nrf2-ARE pathway.
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June-2017
Volume 39 Issue 6

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

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Spandidos Publications style
Sun C, Jin W and Shi H: Oligomeric proanthocyanidins protects A549 cells against H2O2-induced oxidative stress via the Nrf2-ARE pathway. Int J Mol Med 39: 1548-1554, 2017.
APA
Sun, C., Jin, W., & Shi, H. (2017). Oligomeric proanthocyanidins protects A549 cells against H2O2-induced oxidative stress via the Nrf2-ARE pathway. International Journal of Molecular Medicine, 39, 1548-1554. https://doi.org/10.3892/ijmm.2017.2971
MLA
Sun, C., Jin, W., Shi, H."Oligomeric proanthocyanidins protects A549 cells against H2O2-induced oxidative stress via the Nrf2-ARE pathway". International Journal of Molecular Medicine 39.6 (2017): 1548-1554.
Chicago
Sun, C., Jin, W., Shi, H."Oligomeric proanthocyanidins protects A549 cells against H2O2-induced oxidative stress via the Nrf2-ARE pathway". International Journal of Molecular Medicine 39, no. 6 (2017): 1548-1554. https://doi.org/10.3892/ijmm.2017.2971