3,3'‑diindolylmethane potentiates tumor necrosis factor‑related apoptosis‑inducing ligand-induced apoptosis of gastric cancer cells

  • Authors:
    • Yang Ye
    • Shuhan Miao
    • Yan Wang
    • Jianwei Zhou
    • Rongzhu Lu
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  • Published online on: March 3, 2015     https://doi.org/10.3892/ol.2015.3008
  • Pages: 2393-2397
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Abstract

Tumor necrosis factor‑related apoptosis‑inducing ligand (TRAIL) specifically kills cancer cells without destroying the majority of healthy cells. However, numerous types of cancer cell, including gastric cancer cells, tend to be resistant to TRAIL. The bioactive product 3,3'‑diindolylmethane (DIM), which is derived from cruciferous vegetables, is also currently recognized as a candidate anticancer agent. In the present study, a Cell Counting Kit 8 cell growth assay and an Annexin V‑fluorescein isothiocyanate apoptosis assay were performed to investigate the potentiating effect of DIM on TRAIL‑induced apoptosis in gastric cancer cells, and the possible mechanisms of this potentiation. The results obtained demonstrated that, compared with TRAIL or DIM treatment alone, co‑treatment with TRAIL (25 or 50 ng/ml) and DIM (10 µmol/l) induced cytotoxic and apoptotic effects in BGC‑823 and SGC‑7901 gastric cancer cells. Furthermore, western blot analysis revealed that the protein expression levels of death receptor 5 (DR5), CCAAT/enhancer binding protein homologous protein (CHOP) and glucose‑regulated protein 78 (GRP78) were upregulated in the co‑treated gastric cancer cells. To the best of our knowledge, the present study is the first to provide evidence that DIM sensitizes TRAIL‑induced inhibition of proliferation and apoptosis in gastric cancer cells, accompanied by the upregulated expression of DR5, CHOP and GRP78 proteins, which may be involved in endoplasmic reticulum stress mechanisms.
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May-2015
Volume 9 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Ye Y, Miao S, Wang Y, Zhou J and Lu R: 3,3'‑diindolylmethane potentiates tumor necrosis factor‑related apoptosis‑inducing ligand-induced apoptosis of gastric cancer cells . Oncol Lett 9: 2393-2397, 2015.
APA
Ye, Y., Miao, S., Wang, Y., Zhou, J., & Lu, R. (2015). 3,3'‑diindolylmethane potentiates tumor necrosis factor‑related apoptosis‑inducing ligand-induced apoptosis of gastric cancer cells . Oncology Letters, 9, 2393-2397. https://doi.org/10.3892/ol.2015.3008
MLA
Ye, Y., Miao, S., Wang, Y., Zhou, J., Lu, R."3,3'‑diindolylmethane potentiates tumor necrosis factor‑related apoptosis‑inducing ligand-induced apoptosis of gastric cancer cells ". Oncology Letters 9.5 (2015): 2393-2397.
Chicago
Ye, Y., Miao, S., Wang, Y., Zhou, J., Lu, R."3,3'‑diindolylmethane potentiates tumor necrosis factor‑related apoptosis‑inducing ligand-induced apoptosis of gastric cancer cells ". Oncology Letters 9, no. 5 (2015): 2393-2397. https://doi.org/10.3892/ol.2015.3008