The proliferating cell hypothesis: a metabolic framework for Plasmodium growth and development

Trends Parasitol. 2014 Apr;30(4):170-5. doi: 10.1016/j.pt.2014.02.001. Epub 2014 Mar 11.

Abstract

We hypothesise that intraerythrocytic malaria parasite metabolism is not merely fulfilling the need for ATP generation, but is evolved to support rapid proliferation, similar to that seen in other rapidly proliferating cells such as cancer cells. Deregulated glycolytic activity coupled with impaired mitochondrial metabolism is a metabolic strategy to generate glycolytic intermediates essential for rapid biomass generation for schizogony. Further, we discuss the possibility that Plasmodium metabolism is not only a functional consequence of the 'hard-wired' genome and argue that metabolism may also have a causal role in triggering the cascade of events that leads to developmental stage transitions. This hypothesis offers a framework to rationalise the observations of aerobic glycolysis, atypical mitochondrial metabolism, and metabolic switching in nonproliferating stages.

Keywords: Warburg effect; dormancy; epigenetics; gametocytes; glycolysis; malaria.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Aerobiosis
  • Animals
  • Cell Proliferation
  • Glycolysis
  • Host-Parasite Interactions*
  • Humans
  • Life Cycle Stages / physiology
  • Plasmodium / cytology
  • Plasmodium / growth & development*
  • Plasmodium / metabolism*