Linear population allocation by bistable switches in response to transient stimulation

Jaydeep K. Srimani, Guang Yao, John Neu, Yu Tanouchi, Tae Jun Lee, Lingchong You

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Many cellular decision processes, including proliferation, differentiation, and phenotypic switching, are controlled by bistable signaling networks. In response to transient or intermediate input signals, these networks allocate a population fraction to each of two distinct states (e.g. OFF and ON). While extensive studies have been carried out to analyze various bistable networks, they are primarily focused on responses of bistable networks to sustained input signals. In this work, we investigate the response characteristics of bistable networks to transient signals, using both theoretical analysis and numerical simulation. We find that bistable systems exhibit a common property: for input signals with short durations, the fraction of switching cells increases linearly with the signal duration, allowing the population to integrate transient signals to tune its response. We propose that this allocation algorithm can be an optimal response strategy for certain cellular decisions in which excessive switching results in lower population fitness.

Original languageEnglish (US)
Article numbere105408
JournalPloS one
Volume9
Issue number8
DOIs
StatePublished - Aug 20 2014

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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