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Metformin AND Oxamate

Gabriela Figueroa-González, Verónica García-Castillo, Jossimar Coronel-Hernández, Eduardo López-Urrutia, Sonia León-Cabrera, Luis E Arias-Romero, L I Terrazas, Miriam Rodríguez-Sosa, Alma Delia Campos-Parra, Eduardo Zúñiga-Calzada, Cesar Lopez-Camarillo, Fermín Morales-González, Nadia J Jacobo-Herrera, Carlos Pérez-Plasencia
Colorectal cancer (CRC) is an important health issue worldwide, accounting for the third place of cancer incidence. Chronic inflammation, as seen in Crohn's disease and ulcerative colitis, is the most important risk factor for developing CRC, as it favours neoplastic transformation by enhancing epithelial cell turnover in the colonic mucosa. Treatments for CRC need to be improved; currently they are not specific and have several secondary effects in patients. The main objective of this work was to evaluate a new therapeutic strategy against a colitis-related colorectal cancer in vivo and in vitro by targeting mTOR-signaling and lactate dehydrogenase A...
2016: Journal of Cancer
Chrysi Xintaropoulou, Carol Ward, Alan Wise, Hugh Marston, Arran Turnbull, Simon P Langdon
Many cancer cells rely on aerobic glycolysis for energy production and targeting of this pathway is a potential strategy to inhibit cancer cell growth. In this study, inhibition of five glycolysis pathway molecules (GLUT1, HKII, PFKFB3, PDHK1 and LDH) using 9 inhibitors (Phloretin, Quercetin, STF31, WZB117, 3PO, 3-bromopyruvate, Dichloroacetate, Oxamic acid, NHI-1) was investigated in panels of breast and ovarian cancer cell line models. All compounds tested blocked glycolysis as indicated by increased extracellular glucose and decreased lactate production and also increased apoptosis...
September 22, 2015: Oncotarget
W Keith Miskimins, Hyun Joo Ahn, Ji Yeon Kim, Sun Ryu, Yuh-Seog Jung, Joon Young Choi
Phenformin (phenethylbiguanide; an anti-diabetic agent) plus oxamate [lactate dehydrogenase (LDH) inhibitor] was tested as a potential anti-cancer therapeutic combination. In in vitro studies, phenformin was more potent than metformin, another biguanide, recently recognized to have anti-cancer effects, in promoting cancer cell death in the range of 25 times to 15 million times in various cancer cell lines. The anti-cancer effect of phenformin was related to complex I inhibition in the mitochondria and subsequent overproduction of reactive oxygen species (ROS)...
2014: PloS One
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