Abstract
Here we demonstrated that sepantronium bromide (YM155), a survivin suppressant, inhibited esophageal squamous-cell carcinoma (ESCC) growth in mice bearing human ESCC xenografts without affecting body weight. In cell culture, YM155 decreased survivin levels and caused PARP-1 activation, poly-ADP polymer formation, and AIF translocation from the cytosol to the nucleus. Genetic knockdown of PARP-1 or AIF abrogated YM155-induced parthanatos cell death. Furthermore, FOS, JUN and c-MYC gene transcription, which is stimulated by activated PARP-1, was increased following YM155 treatment. Our data demonstrate that YM155 did not trigger apoptosis, but induced parthanatos, a cell death dependent on PARP-1 hyper-activation, and support clinical development of YM155 in ESCC.
Keywords:
PARP; chemotherapy; esophageal cancer; parthanatos.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Blotting, Western
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Carcinoma, Squamous Cell / drug therapy*
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Carcinoma, Squamous Cell / genetics
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Carcinoma, Squamous Cell / metabolism
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Cell Death / drug effects
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Cell Death / genetics
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Cell Line, Tumor
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Cell Survival / drug effects
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Cell Survival / genetics
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Dose-Response Relationship, Drug
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Esophageal Neoplasms / drug therapy*
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Esophageal Neoplasms / genetics
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Esophageal Neoplasms / metabolism
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Female
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Gene Expression Profiling
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Gene Expression Regulation, Neoplastic / drug effects
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Humans
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Imidazoles / pharmacology*
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Inhibitor of Apoptosis Proteins / antagonists & inhibitors
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Mice, Nude
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Microscopy, Electron, Transmission
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Microscopy, Fluorescence
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Naphthoquinones / pharmacology*
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Oligonucleotide Array Sequence Analysis
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Poly(ADP-ribose) Polymerases / genetics
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Poly(ADP-ribose) Polymerases / metabolism*
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RNA Interference
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Reverse Transcriptase Polymerase Chain Reaction
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Survivin
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Tumor Burden / drug effects
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Tumor Burden / genetics
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Xenograft Model Antitumor Assays*
Substances
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BIRC5 protein, human
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Imidazoles
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Inhibitor of Apoptosis Proteins
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Naphthoquinones
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Survivin
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Poly(ADP-ribose) Polymerases
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sepantronium