PMID- 24513530 OWN - NLM STAT- MEDLINE DCOM- 20150715 LR - 20220316 IS - 1878-5875 (Electronic) IS - 1357-2725 (Linking) VI - 50 DP - 2014 May TI - Who controls the ATP supply in cancer cells? Biochemistry lessons to understand cancer energy metabolism. PG - 10-23 LID - S1357-2725(14)00042-9 [pii] LID - 10.1016/j.biocel.2014.01.025 [doi] AB - Applying basic biochemical principles, this review analyzes data that contrasts with the Warburg hypothesis that glycolysis is the exclusive ATP provider in cancer cells. Although disregarded for many years, there is increasing experimental evidence demonstrating that oxidative phosphorylation (OxPhos) makes a significant contribution to ATP supply in many cancer cell types and under a variety of conditions. Substrates oxidized by normal mitochondria such as amino acids and fatty acids are also avidly consumed by cancer cells. In this regard, the proposal that cancer cells metabolize glutamine for anabolic purposes without the need for a functional respiratory chain and OxPhos is analyzed considering thermodynamic and kinetic aspects for the reductive carboxylation of 2-oxoglutarate catalyzed by isocitrate dehydrogenase. In addition, metabolic control analysis (MCA) studies applied to energy metabolism of cancer cells are reevaluated. Regardless of the experimental/environmental conditions and the rate of lactate production, the flux-control of cancer glycolysis is robust in the sense that it involves the same steps: glucose transport, hexokinase, hexosephosphate isomerase and glycogen degradation, all at the beginning of the pathway; these steps together with phosphofructokinase 1 also control glycolysis in normal cells. The respiratory chain complexes exert significantly higher flux-control on OxPhos in cancer cells than in normal cells. Thus, determination of the contribution of each pathway to ATP supply and/or the flux-control distribution of both pathways in cancer cells is necessary in order to identify differences from normal cells which may lead to the design of rational alternative therapies that selectively target cancer energy metabolism. CI - Copyright (c) 2014 Elsevier Ltd. All rights reserved. FAU - Moreno-Sanchez, Rafael AU - Moreno-Sanchez R AD - Instituto Nacional de Cardiologia, Departamento de Bioquimica, Tlalpan, Mexico D.F., Mexico. Electronic address: rafael.moreno@cardiologia.org.mx. FAU - Marin-Hernandez, Alvaro AU - Marin-Hernandez A AD - Instituto Nacional de Cardiologia, Departamento de Bioquimica, Tlalpan, Mexico D.F., Mexico. FAU - Saavedra, Emma AU - Saavedra E AD - Instituto Nacional de Cardiologia, Departamento de Bioquimica, Tlalpan, Mexico D.F., Mexico. FAU - Pardo, Juan P AU - Pardo JP AD - Universidad Nacional Autonoma de Mexico, Facultad de Medicina, Departamento de Bioquimica, Mexico D.F., Mexico. FAU - Ralph, Stephen J AU - Ralph SJ AD - School of Medical Sciences, Griffith University, Gold Coast Campus, Qld, Australia. FAU - Rodriguez-Enriquez, Sara AU - Rodriguez-Enriquez S AD - Instituto Nacional de Cardiologia, Departamento de Bioquimica, Tlalpan, Mexico D.F., Mexico; Instituto Nacional de Cancerologia, Laboratorio de Medicina Translacional, Tlalpan, Mexico D.F., Mexico. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20140207 PL - Netherlands TA - Int J Biochem Cell Biol JT - The international journal of biochemistry & cell biology JID - 9508482 RN - 0RH81L854J (Glutamine) RN - 8L70Q75FXE (Adenosine Triphosphate) SB - IM MH - Adenosine Triphosphate/*metabolism MH - Animals MH - Biological Transport MH - Energy Metabolism MH - Glutamine/metabolism MH - Humans MH - Neoplasms/*metabolism MH - Oxidative Phosphorylation OTO - NOTNLM OT - Cancer glutamine metabolism OT - Isocitrate dehydrogenase OT - Oxidative phosphorylation OT - Warburg hypothesis EDAT- 2014/02/12 06:00 MHDA- 2015/07/16 06:00 CRDT- 2014/02/12 06:00 PHST- 2013/10/21 00:00 [received] PHST- 2014/01/21 00:00 [revised] PHST- 2014/01/26 00:00 [accepted] PHST- 2014/02/12 06:00 [entrez] PHST- 2014/02/12 06:00 [pubmed] PHST- 2015/07/16 06:00 [medline] AID - S1357-2725(14)00042-9 [pii] AID - 10.1016/j.biocel.2014.01.025 [doi] PST - ppublish SO - Int J Biochem Cell Biol. 2014 May;50:10-23. doi: 10.1016/j.biocel.2014.01.025. Epub 2014 Feb 7.