Minimal oscillating subnetwork in the Huang-Ferrell model of the MAPK cascade

Otto Hadač, František Muzika, Vladislav Nevoral, Michal Přibyl and Igor Schreiber

PLOS ONE, 2017, vol. 12, issue 6, 1-25

Abstract: Prompted by the recent growing evidence of oscillatory behavior involving MAPK cascades we present a systematic approach of analyzing models and elucidating the nature of biochemical oscillations based on reaction network theory. In particular, we formulate a minimal biochemically consistent mass action subnetwork of the Huang-Ferrell model of the MAPK signalling that provides an oscillatory response when a parameter controlling the activation of the top-tier kinase is varied. Such dynamics are either intertwined with or separated from the earlier found bistable/hysteretic behavior in this model. Using the theory of stability of stoichiometric networks, we reduce the original MAPK model, convert kinetic to convex parameters and examine those properties of the minimal subnetwork that underlie the oscillatory dynamics. We also use the methods of classification of chemical oscillatory networks to explain the rhythmic behavior in physicochemical terms, i.e., we identify of the role of individual biochemical species in positive and negative feedback loops and describe their coordinated action leading to oscillations. Our approach provides an insight into dynamics without the necessity of knowing rate coefficients and thus is useful prior the statistical evaluation of parameters.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0178457

DOI: 10.1371/journal.pone.0178457

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