The multikinase inhibitor Sorafenib enhances glycolysis and synergizes with glycolysis blockade for cancer cell killing
Tesori, Valentina; Piscaglia, Anna Chiara; Samengo, Daniela; Barba, Marta; Bernardini, Camilla; Scatena, Roberto; Pontoglio, Alessandro; Castellini, Laura; Spelbrink, Johannes T; Maulucci, Giuseppe; Puglisi, Maria Ausiliatrice; Giovambattista, Pani; Gasbarrini, Antonio (2015)
Tesori, Valentina
Piscaglia, Anna Chiara
Samengo, Daniela
Barba, Marta
Bernardini, Camilla
Scatena, Roberto
Pontoglio, Alessandro
Castellini, Laura
Spelbrink, Johannes T
Maulucci, Giuseppe
Puglisi, Maria Ausiliatrice
Giovambattista, Pani
Gasbarrini, Antonio
2015
Scientific Reports 5
9149
BioMediTech - BioMediTech
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:uta-201608042136
https://urn.fi/URN:NBN:fi:uta-201608042136
Tiivistelmä
Although the only effective drug against primary hepatocarcinoma, the multikinase inhibitor Sorafenib (SFB) usually fails to eradicate liver cancer. Since SFB targets mitochondria, cell metabolic reprogramming may underlie intrinsic tumor resistance. To characterize cancer cell metabolic response to SFB, we measured oxygen consumption, generation of reactive oxygen species (ROS) and ATP content in rat LCSC (Liver Cancer Stem Cells) -2 cells exposed to the drug. Genome wide analysis of gene expression was performed by Affymetrix technology. SFB cytotoxicity was evaluated by multiple assays in the presence or absence of metabolic inhibitors, or in cells genetically depleted of mitochondria. We found that low concentrations (2.5–5 μM) of SFB had a relatively modest effect on LCSC-2 or 293 T cell growth, but damaged mitochondria and increased intracellular ROS. Gene expression profiling of SFB-treated cells was consistent with a shift toward aerobic glycolysis and, accordingly, SFB cytotoxicity was dramatically increased by glucose withdrawal or the glycolytic inhibitor 2-DG. Under metabolic stress, activation of the AMP dependent Protein Kinase (AMPK), but not ROS blockade, protected cells from death. We conclude that mitochondrial damage and ROS drive cell killing by SFB, while glycolytic cell reprogramming may represent a resistance strategy potentially targetable by combination therapies.
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