Multiplexing information flow through dynamic signalling systems

Giorgos Minas, Dan J. Woodcock, Louise Ashall, Claire V. Harper, Michael R.H. White, David A. Rand

Research output: Contribution to journalArticle

26 Downloads (Pure)

Abstract

We consider how a signalling system can act as an information hub by multiplexing information arising from multiple signals. We formally define multiplexing, mathematically characterise which systems can multiplex and how well they can do it. While the results of this paper are theoretical, to motivate the idea of multiplexing, we provide experimental evidence that tentatively suggests that the NF-κB transcription factor can multiplex information about changes in multiple signals. We believe that our theoretical results may resolve the apparent paradox of how a system like NF-κB that regulates cell fate and inflammatory signalling in response to diverse stimuli can appear to have the low information carrying capacity suggested by recent studies on scalar signals. In carrying out our study, we introduce new methods for the analysis of large, nonlinear stochastic dynamic models, and develop computational algorithms that facilitate the calculation of fundamental constructs of information theory such as Kullback-Leibler divergences and sensitivity matrices, and link these methods to a new theory about multiplexing information. We show that many current models such as those of the NF-κB system cannot multiplex effectively and provide models that overcome this limitation using post-transcriptional modifications.

Original languageEnglish
Pages (from-to)e1008076
JournalPLoS Computational Biology
Volume16
Issue number8
DOIs
Publication statusPublished - 3 Aug 2020

Keywords

  • Multiplexing information
  • dynamic signalling systems

Fingerprint Dive into the research topics of 'Multiplexing information flow through dynamic signalling systems'. Together they form a unique fingerprint.

  • Cite this

    Minas, G., Woodcock, D. J., Ashall, L., Harper, C. V., White, M. R. H., & Rand, D. A. (2020). Multiplexing information flow through dynamic signalling systems. PLoS Computational Biology, 16(8), e1008076. https://doi.org/10.1371/journal.pcbi.1008076