title: Energy metabolism in neuroblastoma and Wilms tumor.
abstract: To support high proliferation, the majority of cancer cells undergo fundamental metabolic changes such as increasing their glucose uptake and shifting to glycolysis for ATP production at the expense of far more efficient mitochondrial energy production by oxidative phosphorylation (OXPHOS), which at first glance is a paradox. This phenomenon is known as the Warburg effect. However, enhanced glycolysis is necessary to provide building blocks for anabolic growth. Apart from the generation of ATP, intermediates of glycolysis serve as precursors for a variety of biosynthetic pathways essential for cell proliferation. In the last 10-15 years the field of tumor metabolism has experienced an enormous boom in interest. It is now well established that tumor suppressor genes and oncogenes often play a central role in the regulation of cellular metabolism. Therefore, they significantly contribute to the manifestation of the Warburg effect. While much attention has focused on adult solid tumors, so far there has been comparatively little effort directed at elucidation of the mechanism responsible for the Warburg effect in childhood cancers. In this review we focus on metabolic pathways in neuroblastoma (NB) and Wilms tumor (WT), the two most frequent solid tumors in children. Both tumor types show alterations of the OXPHOS system and glycolytic features. Chromosomal alterations and activation of oncogenes like MYC or inactivation of tumor suppressor genes like TP53 can in part explain the changes of energy metabolism in these cancers. The strict dependence of cancer cells on glucose metabolism is a fairly common feature among otherwise biologically diverse types of cancer. Therefore, inhibition of glycolysis or starvation of cancer cells through glucose deprivation via a high-fat low-carbohydrate diet may be a promising avenue for future adjuvant therapeutic strategies.
authors.affiliation: 1 Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, 2 Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria.
authors.forename: Sepideh
authors.initials: S
authors.lastname: Aminzadeh
authors.affiliation: 1 Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, 2 Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria.
authors.forename: Silvia
authors.initials: S
authors.lastname: Vidali
authors.affiliation: 1 Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, 2 Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Sperl
authors.affiliation: 1 Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, 2 Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria.
authors.forename: Barbara
authors.initials: B
authors.lastname: Kofler
authors.affiliation: 1 Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, 2 Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria.
authors.forename: René G
authors.initials: RG
authors.lastname: Feichtinger
keywords: Cancer metabolism; Wilms tumor (WT); mitochondria; neuroblastoma (NB); oxidative phosphorylation (OXPHOS)
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