Coupling of the cell cycle and metabolism in yeast cell-cycle-related oscillations via resource criticality and checkpoint gating

  • Luke Morgan Department of Mathematics, Ohio University, Athens, OH, USA
  • Gregory Moses Department of Mathematics, University of Cincinnati, Cincinnati, OH, USA
  • Todd R. Young Department of Mathematics, Ohio University, Athens, OH, USA
Keywords: Saccharomyces cerevisiae, autonomous oscillations, cell cycle synchrony

Abstract

We investigate the possibility that slow metabolic, cell-cycle-related oscillations in yeast and associated temporal clustering of cells within the cell cycle could be due to an interplay between near-critical metabolism and cell cycle checkpoints. We construct a dynamical model of the cell cycles of a large culture of cells that incorporates checkpoint gating and metabolic mode switching that are triggered by resource thresholds. We investigate the model analytically and prove that there exist open sets of parameter values for which the model possesses stable periodic solutions that exhibit metabolic oscillations with cell cycle clustering. Simulations of the model give evidence that such solutions exist for large sets of parameter values. This demonstrates that checkpoint gating coupled with critical resources can be a robust mechanism for producing the phenomena observed in experiments.

Published
2018-12-14
How to Cite
Morgan, Luke, Gregory Moses, and Todd Young. 2018. “Coupling of the Cell Cycle and Metabolism in Yeast Cell-Cycle-Related Oscillations via Resource Criticality and Checkpoint Gating”. Letters in Biomathematics 5 (1), 113-28. https://doi.org/10.1080/23737867.2018.1456366.
Section
Research