Reactive oxygen species contribute to TRAIL receptors upregulation; the mechanism for PH II-7 augmenting TRAIL induced apoptosis in leukemia cells

Eur J Pharmacol. 2015 Jan 5:746:344-52. doi: 10.1016/j.ejphar.2014.10.028. Epub 2014 Nov 15.

Abstract

Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) can selectively induce apoptosis in cancer cells and is verified to be effective in various cancers. However, a variety of cancer cells are found to be resistant to TRAIL and the mechanisms are largely unknown. Moreover, multidrug resistance to traditional chemotherapeutic agents still remains a tough problem in clinical practice. Fortunately, our previous work proved the ability of PH II-7 in overcoming MDR phenotype through reactive oxygen species production in K562 and its MDR counterpart K562/A02 cells. Additionally, we further explored its potential in augmenting TRAIL induced apoptosis in cancer cells with various tissue origins. Our results showed PH II-7 up-regulated DR4/DR5 expression and augment TRAIL cytotoxicity through reactive oxygen species production, which provide a solid foundation for TRAIL in combination with PH II-7 in future clinical application.

Keywords: Apoptosis; Multidrug resistance; PH II-7; Reactive oxygen species; Tumor necrosis factor related apoptosis inducing ligand (TRAIL).

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / pharmacology*
  • Apoptosis / drug effects*
  • Cell Line, Tumor
  • Cell Survival / drug effects
  • Drug Resistance, Neoplasm
  • Gene Expression Regulation, Leukemic / drug effects
  • Humans
  • Indoles / pharmacology*
  • Leukemia / drug therapy*
  • Leukemia / metabolism
  • Leukemia / pathology
  • Oxidative Stress / drug effects
  • Peptide Fragments / agonists
  • Peptide Fragments / antagonists & inhibitors
  • Peptide Fragments / genetics
  • Peptide Fragments / metabolism
  • RNA Interference
  • RNA, Messenger / metabolism
  • RNA, Small Interfering
  • Reactive Oxygen Species / metabolism*
  • Receptors, TNF-Related Apoptosis-Inducing Ligand / agonists*
  • Receptors, TNF-Related Apoptosis-Inducing Ligand / antagonists & inhibitors
  • Receptors, TNF-Related Apoptosis-Inducing Ligand / genetics
  • Receptors, TNF-Related Apoptosis-Inducing Ligand / metabolism
  • Solubility
  • Up-Regulation / drug effects*

Substances

  • Antineoplastic Agents
  • Indoles
  • PHII-7 compound
  • Peptide Fragments
  • RNA, Messenger
  • RNA, Small Interfering
  • Reactive Oxygen Species
  • Receptors, TNF-Related Apoptosis-Inducing Ligand
  • TNFRSF10A protein, human
  • TNFRSF10B protein, human