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Issue title: Advances in Biological processes and Petri nets (BioPPN)
Guest editors: Anna Gambin and Monika Heiner
Article type: Research Article
Authors: Bordon, Jure; *; † | Moškon, Miha | Zimic, Nikolaj | Mraz, Miha
Affiliations: Faculty of Computer and Information Science, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia. jure.bordon@fri.uni-lj.si
Correspondence: [†] Address for correspondence: Faculty of Computer and Information Science, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
Note: [*] The research was partially supported by the scientific-research programme Pervasive Computing (P2-0359, financed by the Slovenian Research Agency in the years from 2009 to 2017), by the basic research and application project Designed cellular logic (J1-6740, financed by the Slovenian Research Agency in the years from 2014 to 2017). Results presented here are in scope of PhD thesis by Jure Bordon, University of Ljubljana, Faculty of Computer and Information science.
Abstract: Petri nets are a well-established modelling framework in life sciences and have been widely applied to systems and synthetic biology in recent years. With the various extensions they serve as graphical and simulation interface for both qualitative and quantitative modelling approaches. In terms of quantitative approaches, Stochastic and Continuous Petri nets are extensively used for modelling biological system’s dynamics if underlying kinetic data are known. However, these are often only vaguely defined or even missing. In this paper we present a fuzzy approach, which can be used to model biological processes with unknown kinetic data in order to still obtain quantitatively relevant simulation results. We define fuzzy firing rate functions, which can be used in Continuous Petri nets and are able to describe different processes that govern the dynamics of gene expression networks. They can be used in combination with the conventional firing rate functions and applied only in the parts of the system for which the kinetic data are missing. The case study of the proposed approach is performed on models of a hypothetical repressilator and Neurospora circadian rhythm.
Keywords: Petri nets, modelling biological processes, fuzzy logic, unknown kinetic parameter values
DOI: 10.3233/FI-2018-1675
Journal: Fundamenta Informaticae, vol. 160, no. 1-2, pp. 81-100, 2018
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