Hispolon from Phellinus linteus induces apoptosis and sensitizes human cancer cells to the tumor necrosis factor-related apoptosis-inducing ligand through upregulation of death receptors

  • Authors:
    • Ji‑Hun Kim
    • Yu Chul Kim
    • Byoungduck Park
  • View Affiliations

  • Published online on: November 20, 2015     https://doi.org/10.3892/or.2015.4440
  • Pages: 1020-1026
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Abstract

The tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a potent anticancer agent possessing the ability to induce apoptosis in various cancer cells but not in non‑malignant cells. However, certain type of cancer cells are resistant to TRAIL‑induced apoptosis and some acquire resistance after the first treatment. So development of an agent that can reduce or avoid resistance in TRAIL‑induced apoptosis has garnered significant attention. The present study evaluated the anticancer potential of hispolon in TRAIL‑induced apoptosis and indicated hispolon can sensitize cancer cells to TRAIL. As the mechanism of action was examined, hispolon was found to activate caspase‑3, caspase‑8 and caspase‑9, while downregulating the expression of cell survival proteins such as cFLIP, Bcl‑2 and Bcl‑xL and upregulating the expression of Bax and truncated Bid. We also found hispolon induced death receptors in a non‑cell type‑specific manner. Upregulation of death receptors by hispolon was found to be p53-independent but linked to the induction of CAAT enhancer binding protein homologous protein (CHOP). Overall, hispolon was demonstrated to potentiate the apoptotic effects of TRAIL through downregulation of anti‑apoptotic proteins and upregulation of death receptors linked with CHOP and pERK elevation.
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February-2016
Volume 35 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Kim JH, Kim YC and Park B: Hispolon from Phellinus linteus induces apoptosis and sensitizes human cancer cells to the tumor necrosis factor-related apoptosis-inducing ligand through upregulation of death receptors. Oncol Rep 35: 1020-1026, 2016
APA
Kim, J., Kim, Y.C., & Park, B. (2016). Hispolon from Phellinus linteus induces apoptosis and sensitizes human cancer cells to the tumor necrosis factor-related apoptosis-inducing ligand through upregulation of death receptors. Oncology Reports, 35, 1020-1026. https://doi.org/10.3892/or.2015.4440
MLA
Kim, J., Kim, Y. C., Park, B."Hispolon from Phellinus linteus induces apoptosis and sensitizes human cancer cells to the tumor necrosis factor-related apoptosis-inducing ligand through upregulation of death receptors". Oncology Reports 35.2 (2016): 1020-1026.
Chicago
Kim, J., Kim, Y. C., Park, B."Hispolon from Phellinus linteus induces apoptosis and sensitizes human cancer cells to the tumor necrosis factor-related apoptosis-inducing ligand through upregulation of death receptors". Oncology Reports 35, no. 2 (2016): 1020-1026. https://doi.org/10.3892/or.2015.4440