The mitochondrial chaperone TRAP1 promotes neoplastic growth by inhibiting succinate dehydrogenase

Marco Sciacovelli, Giulia Guzzo, Virginia Morello, Christian Frezza, Liang Zheng, Nazarena Nannini, Fiorella Calabrese, Gabriella Laudiero, Franca Esposito, Matteo Landriscina, Paola Defilippi, Paolo Bernardi, Andrea Rasola

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Abstract

We report that the mitochondrial chaperone TRAP1, which is induced in most tumor types, is required for neoplastic growth and confers transforming potential to noncancerous cells. TRAP1 binds to and inhibits succinate dehydrogenase (SDH), the complex II of the respiratory chain. The respiratory downregulation elicited by TRAP1 interaction with SDH promotes tumorigenesis by priming the succinate-dependent stabilization of the proneoplastic transcription factor HIF1α independently of hypoxic conditions. These findings provide a mechanistic clue to explain the switch to aerobic glycolysis of tumors and identify TRAP1 as a promising antineoplastic target.

Original languageEnglish
Pages (from-to)988-999
Number of pages12
JournalCell Metabolism
Volume17
Issue number6
DOIs
Publication statusPublished - Jun 4 2013

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ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology
  • Physiology

Cite this

Sciacovelli, M., Guzzo, G., Morello, V., Frezza, C., Zheng, L., Nannini, N., Calabrese, F., Laudiero, G., Esposito, F., Landriscina, M., Defilippi, P., Bernardi, P., & Rasola, A. (2013). The mitochondrial chaperone TRAP1 promotes neoplastic growth by inhibiting succinate dehydrogenase. Cell Metabolism, 17(6), 988-999. https://doi.org/10.1016/j.cmet.2013.04.019