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Ref Type | Journal Article | ||||||||||||
PMID | (18598947) | ||||||||||||
Authors | Turcotte S, Chan DA, Sutphin PD, Hay MP, Denny WA, Giaccia AJ | ||||||||||||
Title | A molecule targeting VHL-deficient renal cell carcinoma that induces autophagy. | ||||||||||||
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Abstract Text | Renal cell carcinomas (RCCs) are refractory to standard therapies. The von Hippel-Lindau (VHL) tumor suppressor gene is inactivated in 75% of RCCs. By screening for small molecules selectively targeting VHL-deficient RCC cells, we identified STF-62247. STF-62247 induces cytotoxicity and reduces tumor growth of VHL-deficient RCC cells compared to genetically matched cells with wild-type VHL. STF-62247-stimulated toxicity occurs in a HIF-independent manner through autophagy. Reduction of protein levels of essential autophagy pathway components reduces sensitivity of VHL-deficient cells to STF-62247. Using a yeast deletion pool, we show that loss of proteins involved in Golgi trafficking increases killing by STF-62247. Thus, we have found a small molecule that selectively induces cell death in VHL-deficient cells, representing a paradigm shift for targeted therapy. |