Histone deacetylase inhibition and blockade of the glycolytic pathway synergistically induce glioblastoma cell death.
OBJECTIVE
High-grade gliomas are difficult to treat due to their location behind the blood-brain barrier and to inherent radioresistance and chemoresistance.


METHODS
Because tumorigenesis is considered a multistep process of accumulating mutations affecting distinct signaling pathways, combinations of compounds, which inhibit nonoverlapping pathways, are being explored to improve treatment of gliomas. Histone deacetylase inhibitors (HDI) have proven antitumor activity by blocking cell proliferation, promoting differentiation, and inducing tumor cell apoptosis.


RESULTS
In this report, we show that the HDIs trichostatin A, sodium butyrate, and low nanomolar doses of LAQ824 combined with the glycolysis inhibitor 2-deoxy-d-glucose induce strong apoptosis in cancer cell lines of brain, breast, and cervix in a p53-independent manner. HDIs up-regulate p21, which is blocked by concomitant administration of 2-deoxy-d-glucose.


CONCLUSIONS
We propose simultaneous blockade of histone deacetylation and glycolysis as a novel therapeutic strategy for several major cancers.
Egler
Vivian
V
Laboratory of Molecular Neuro-oncology, Department of Research and Surgery, University Hospitals, Basel, Switzerland.
Korur
Serdar
S
Failly
Mike
M
Boulay
Jean-Louis
JL
Imber
Roland
R
Lino
Maria M
MM
Merlo
Adrian
A
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D001932:Brain Neoplasms / Q000188:drug therapy*; D002087:Butyrates / Q000494:pharmacology; D045744:Cell Line, Tumor; D003847:Deoxyglucose / Q000494:pharmacology; D004357:Drug Synergism; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005909:Glioblastoma / Q000188:drug therapy*; D006019:Glycolysis / Q000187:drug effects*; D056572:Histone Deacetylase Inhibitors; D006655:Histone Deacetylases / Q000187:drug effects; D006801:Humans; D006877:Hydroxamic Acids / Q000494:pharmacology
D002087:Butyrates; D004791:Enzyme Inhibitors; D056572:Histone Deacetylase Inhibitors; D006877:Hydroxamic Acids; C477361:LAQ824; C012589:trichostatin A; D003847:Deoxyglucose; D006655:Histone Deacetylases