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).
Copyright © 2014 Elsevier B.V. All rights reserved.
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Antineoplastic Agents / pharmacology*
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Apoptosis / drug effects*
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Cell Line, Tumor
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Cell Survival / drug effects
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Drug Resistance, Neoplasm
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Gene Expression Regulation, Leukemic / drug effects
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Humans
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Indoles / pharmacology*
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Leukemia / drug therapy*
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Leukemia / metabolism
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Leukemia / pathology
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Oxidative Stress / drug effects
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Peptide Fragments / agonists
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Peptide Fragments / antagonists & inhibitors
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Peptide Fragments / genetics
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Peptide Fragments / metabolism
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RNA Interference
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RNA, Messenger / metabolism
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RNA, Small Interfering
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Reactive Oxygen Species / metabolism*
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Receptors, TNF-Related Apoptosis-Inducing Ligand / agonists*
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Receptors, TNF-Related Apoptosis-Inducing Ligand / antagonists & inhibitors
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Receptors, TNF-Related Apoptosis-Inducing Ligand / genetics
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Receptors, TNF-Related Apoptosis-Inducing Ligand / metabolism
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Solubility
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Up-Regulation / drug effects*
Substances
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Antineoplastic Agents
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Indoles
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PHII-7 compound
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Peptide Fragments
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RNA, Messenger
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RNA, Small Interfering
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Reactive Oxygen Species
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Receptors, TNF-Related Apoptosis-Inducing Ligand
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TNFRSF10A protein, human
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TNFRSF10B protein, human