A Flux Balance of Glucose Metabolism Clarifies the Requirements of the Warburg Effect.

Published

Journal Article

The Warburg effect, or aerobic glycolysis, is marked by the increased metabolism of glucose to lactate in the presence of oxygen. Despite its widespread prevalence in physiology and cancer biology, the causes and consequences remain incompletely understood. Here, we show that a simple balance of interacting fluxes in glycolysis creates constraints that impose the necessary conditions for glycolytic flux to generate lactate as opposed to entering into the mitochondria. These conditions are determined by cellular redox and energy demands. By analyzing the constraints and sampling the feasible region of the model, we further study how cell proliferation rate and mitochondria-associated NADH oxidizing and ATP producing fluxes are interlinked. Together this analysis illustrates the simplicity of the origins of the Warburg effect by identifying the flux distributions that are necessary for its instantiation.

Full Text

Duke Authors

Cited Authors

  • Dai, Z; Shestov, AA; Lai, L; Locasale, JW

Published Date

  • September 2016

Published In

Volume / Issue

  • 111 / 5

Start / End Page

  • 1088 - 1100

PubMed ID

  • 27602736

Pubmed Central ID

  • 27602736

Electronic International Standard Serial Number (EISSN)

  • 1542-0086

International Standard Serial Number (ISSN)

  • 0006-3495

Digital Object Identifier (DOI)

  • 10.1016/j.bpj.2016.07.028

Language

  • eng