PMID- 29988033 OWN - NLM STAT- MEDLINE DCOM- 20191125 LR - 20191125 IS - 2041-4889 (Electronic) VI - 9 IP - 7 DP - 2018 Jul 9 TI - alpha-ketoglutarate dehydrogenase inhibition counteracts breast cancer-associated lung metastasis. PG - 756 LID - 10.1038/s41419-018-0802-8 [doi] LID - 756 AB - Metastasis formation requires active energy production and is regulated at multiple levels by mitochondrial metabolism. The hyperactive metabolism of cancer cells supports their extreme adaptability and plasticity and facilitates resistance to common anticancer therapies. In spite the potential relevance of a metastasis metabolic control therapy, so far, limited experience is available in this direction. Here, we evaluated the effect of the recently described alpha-ketoglutarate dehydrogenase (KGDH) inhibitor, (S)-2-[(2,6-dichlorobenzoyl) amino] succinic acid (AA6), in an orthotopic mouse model of breast cancer 4T1 and in other human breast cancer cell lines. In all conditions, AA6 altered Krebs cycle causing intracellular alpha-ketoglutarate (alpha-KG) accumulation. Consequently, the activity of the alpha-KG-dependent epigenetic enzymes, including the DNA demethylation ten-eleven translocation translocation hydroxylases (TETs), was increased. In mice, AA6 injection reduced metastasis formation and increased 5hmC levels in primary tumours. Moreover, in vitro and in vivo treatment with AA6 determined an alpha-KG accumulation paralleled by an enhanced production of nitric oxide (NO). This epigenetically remodelled metabolic environment efficiently counteracted the initiating steps of tumour invasion inhibiting the epithelial-to-mesenchymal transition (EMT). Mechanistically, AA6 treatment could be linked to upregulation of the NO-sensitive anti-metastatic miRNA 200 family and down-modulation of EMT-associated transcription factor Zeb1 and its CtBP1 cofactor. This scenario led to a decrease of the matrix metalloproteinase 3 (MMP3) and to an impairment of 4T1 aggressiveness. Overall, our data suggest that AA6 determines an alpha-KG-dependent epigenetic regulation of the TET-miR200-Zeb1/CtBP1-MMP3 axis providing an anti-metastatic effect in a mouse model of breast cancer-associated metastasis. FAU - Atlante, Sandra AU - Atlante S AD - Division of Cardiovascular Epigenetics, Department of Cardiology, Goethe University, 60596, Frankfurt am Main, Germany. FAU - Visintin, Alessia AU - Visintin A AD - Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, Italy. AD - Dipartimento di Scienza e Tecnologia del Farmaco, Universita degli Studi di Torino, 10125, Torino, Italy. FAU - Marini, Elisabetta AU - Marini E AD - Dipartimento di Scienza e Tecnologia del Farmaco, Universita degli Studi di Torino, 10125, Torino, Italy. FAU - Savoia, Matteo AU - Savoia M AD - Division of Cardiovascular Epigenetics, Department of Cardiology, Goethe University, 60596, Frankfurt am Main, Germany. FAU - Dianzani, Chiara AU - Dianzani C AD - Dipartimento di Scienza e Tecnologia del Farmaco, Universita degli Studi di Torino, 10125, Torino, Italy. FAU - Giorgis, Marta AU - Giorgis M AD - Dipartimento di Scienza e Tecnologia del Farmaco, Universita degli Studi di Torino, 10125, Torino, Italy. FAU - Surun, Duran AU - Surun D AD - Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, Italy. FAU - Maione, Federica AU - Maione F AD - Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, Italy. AD - Dipartimento di Scienza e Tecnologia del Farmaco, Universita degli Studi di Torino, 10125, Torino, Italy. FAU - Schnutgen, Frank AU - Schnutgen F AD - Department of Medicine, Hematology/Oncology, Goethe University, 60596, Frankfurt, Germany. FAU - Farsetti, Antonella AU - Farsetti A AD - Istituto di Biologia Cellulare e Neurobiologia (IBCN), Consiglio Nazionale delle Ricerche (CNR), 00143, Roma, Italy. FAU - Zeiher, Andreas M AU - Zeiher AM AD - Internal Medicine Clinic III, Department of Cardiology, Goethe University, Frankfurt am Main, Germany. FAU - Bertinaria, Massimo AU - Bertinaria M AD - Dipartimento di Scienza e Tecnologia del Farmaco, Universita degli Studi di Torino, 10125, Torino, Italy. FAU - Giraudo, Enrico AU - Giraudo E AD - Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, Italy. AD - Dipartimento di Scienza e Tecnologia del Farmaco, Universita degli Studi di Torino, 10125, Torino, Italy. FAU - Spallotta, Francesco AU - Spallotta F AD - Division of Cardiovascular Epigenetics, Department of Cardiology, Goethe University, 60596, Frankfurt am Main, Germany. FAU - Cencioni, Chiara AU - Cencioni C AD - Division of Cardiovascular Epigenetics, Department of Cardiology, Goethe University, 60596, Frankfurt am Main, Germany. chcencioni@gmail.com. AD - Istituto di Biologia Cellulare e Neurobiologia (IBCN), Consiglio Nazionale delle Ricerche (CNR), 00143, Roma, Italy. chcencioni@gmail.com. FAU - Gaetano, Carlo AU - Gaetano C AD - Laboratorio di Epigenetica, Istituti Clinici Scientifici Maugeri, Via Maugeri 4, 27100, Pavia, Italy. carlo.gaetano@gmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180709 PL - England TA - Cell Death Dis JT - Cell death & disease JID - 101524092 RN - 0 (Enzyme Inhibitors) RN - AB6MNQ6J6L (Succinic Acid) RN - EC 1.2.4.2 (Ketoglutarate Dehydrogenase Complex) SB - IM MH - Animals MH - Breast Neoplasms/*complications/drug therapy/*metabolism MH - Cell Adhesion/drug effects MH - Cell Line, Tumor MH - Cell Movement/drug effects MH - Enzyme Inhibitors/chemistry/*therapeutic use MH - Female MH - Human Umbilical Vein Endothelial Cells MH - Humans MH - Ketoglutarate Dehydrogenase Complex/*metabolism MH - Lung Neoplasms/*drug therapy/*etiology/*metabolism MH - Mice MH - Mice, Inbred BALB C MH - Succinic Acid/chemistry/*therapeutic use PMC - PMC6037705 COIS- The authors declare that they have no conflict of interest. EDAT- 2018/07/11 06:00 MHDA- 2019/11/26 06:00 PMCR- 2018/07/09 CRDT- 2018/07/11 06:00 PHST- 2018/01/09 00:00 [received] PHST- 2018/06/13 00:00 [accepted] PHST- 2018/05/30 00:00 [revised] PHST- 2018/07/11 06:00 [entrez] PHST- 2018/07/11 06:00 [pubmed] PHST- 2019/11/26 06:00 [medline] PHST- 2018/07/09 00:00 [pmc-release] AID - 10.1038/s41419-018-0802-8 [pii] AID - 802 [pii] AID - 10.1038/s41419-018-0802-8 [doi] PST - epublish SO - Cell Death Dis. 2018 Jul 9;9(7):756. doi: 10.1038/s41419-018-0802-8.