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Cancer Cell. 2013 Feb 11;23(2):228-37. doi: 10.1016/j.ccr.2012.12.007. Epub 2013 Jan 23.

Englerin A stimulates PKCθ to inhibit insulin signaling and to simultaneously activate HSF1: pharmacologically induced synthetic lethality.

Author information

1
Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.

Abstract

The natural product englerin A (EA) binds to and activates protein kinase C-θ (PKCθ). EA-dependent activation of PKCθ induces an insulin-resistant phenotype, limiting the access of tumor cells to glucose. At the same time, EA causes PKCθ-mediated phosphorylation and activation of the transcription factor heat shock factor 1, an inducer of glucose dependence. By promoting glucose addiction, while simultaneously starving cells of glucose, EA proves to be synthetically lethal to highly glycolytic tumors.

PMID:
23352416
PMCID:
PMC3574184
DOI:
10.1016/j.ccr.2012.12.007
[Indexed for MEDLINE]
Free PMC Article

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