Cited by 54Gene Regulatory Network AnalysisAdvanced Differential Equations and Dynamical SystemsNonlinear Dynamics and Pattern Formation

A structural classification of candidate oscillatory and multistationary biochemical systems

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Blanchini, Franco, Franco, Elisa, Giordano, Giulia·2014·Bulletin of Mathematical Biology

Published version of a preprint

Abstract

Molecular systems are uncertain: The variability of reaction parameters and the presence of unknown interactions can weaken the predictive capacity of solid mathematical models. However, strong conclusions on the admissible dynamic behaviors of a model can often be achieved without detailed knowledge of its specific parameters. In systems with a sign-definite Jacobian, for instance, cycle-based criteria related to the famous Thomas' conjectures have been largely used to characterize oscillatory and multistationary dynamic outcomes. We build on the rich literature focused on the identification of potential oscillatory and multistationary behaviors using parameter-free criteria. We propose a classification for sign-definite non-autocatalytic biochemical networks, which summarizes several existing results in the literature. We call weak (strong) candidate oscillators systems which can possibly (exclusively) transition to instability due to the presence of a complex pair of eigenvalues, while we call weak (strong) candidate multistationary systems those which can possibly (exclusively) transition to instability due to the presence of a real eigenvalue. For each category, we provide a characterization based on the exclusive or simultaneous presence of positive and negative cycles in the associated sign graph. Most realistic examples of biochemical networks fall in the gray area of systems in which both positive and negative cycles are present: Therefore, both oscillatory and bistable behaviors are in principle possible. However, many canonical example circuits exhibiting oscillations or bistability fall in the categories of strong candidate oscillators/multistationary systems, in agreement with our results.

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  • The mutual inhibition between HPG and HPA axes gives rise to a positive loop; therefore, the dynamic system is a candidate multistable system that can admit multiple equilibria.

    “The mutual inhibition between HPG and HPA axes gives rise to a positive loop; therefore, the dynamic system is a candidate multistable system that can admit multiple equilibria [130].”

    From Fibromyalgia pathogenesis explained by a neuroendocrine multistable model (2024) · cites this paper as [130]

    Figure 1b describes mutual inhibition as an overall positive feedback loop, and Proposition 3 (under Definition 9; page unavailable) says a non-critical system with a positive cycle is a candidate multistationary system. The paper does not establish mutual inhibition between the HPG and HPA axes or assess that particular system; its conclusion about possible multiple equilibria is therefore a conditional application, not a finding about those axes. (LLM, conf=0.85)

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Research works printed but not linked: 1

  1. Angeli, D., Sontag, E. (2008). Oscillations in I/O monotone systems. IEEE Transactions on Circuits and Systems: Special Issue on Systems Biology 55:166-176

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Authors
Blanchini, F., Franco, E., & Giordano, G.
Affiliations
  • University of Udine (IT)
  • University of California, Riverside (US)
Corresponding author
Blanchini, Franco
Venue
Bulletin of Mathematical Biology
Published
2014-09-18
Volume
76
Issue
10
Pages
2542-2569
ISSN
  • 0092-8240 (ISSN-L)
  • 1522-9602
OpenAlex
W1980077650
Cited by
54
References
70
Citations by year
2025: 5 · 2024: 4 · 2023: 2 · 2022: 6 · 2021: 3 · 2020: 4 · 2019: 6 · 2018: 5 · 2017: 6 · 2016: 4 · 2015: 6 · 2014: 3
FWCI
2.60
Type
journal article
Language
en
Open access
Licence
Locations
  • Bulletin of Mathematical Biology (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Institutional Research Information System (University of Udine) (submittedVersion)
  • Iris (University of Trento) (submittedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • National Science Foundation (1266402)
  • Division of Civil, Mechanical and Manufacturing Innovation (1266402, CMMI-1266402)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Physical Sciences › Mathematics › Geometry and Topology › Advanced Differential Equations and Dynamical Systems
  • Physical Sciences › Computer Science › Computer Networks and Communications › Nonlinear Dynamics and Pattern Formation
Keywords
multistationarity, bistability, eigenvalue analysis, complex eigenvalues, real eigenvalues
MeSH terms
Biochemical Phenomena, Models, Chemical, Models, Genetic, Feedback, Physiological, Systems Biology, Gene Regulatory Networks, Mathematical Concepts, Synthetic Biology

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