scholarly journals Stable States of Boolean Regulatory Networks Composed Over Hexagonal Grids

2018 ◽  
Vol 335 ◽  
pp. 113-130 ◽  
Author(s):  
Pedro L. Varela ◽  
Inês Lynce ◽  
Vasco Manquinho ◽  
Claudine Chaouiya ◽  
Pedro T. Monteiro
10.29007/fb4f ◽  
2020 ◽  
Author(s):  
Tarek Khaled ◽  
Belaid Benhamou

In biology, Boolean networks are conventionally used to represent and simulate gene regulatory networks. The attractors are the subject of special attention in analyzing the dynamics of a Boolean network. They correspond to stable states and stable cycles, which play a crucial role in biological systems. In this work, we study a new representation of the dynamics of Boolean networks that are based on a new semantics used in answer set programming (ASP). Our work is based on the enu- meration of all the attractors of asynchronous Boolean networks having interaction graphs which are circuits. We show that the used semantics allows to design a new approach for computing exhaustively both the stable cycles and the stable states of such networks. The enumeration of all the attractors and the distinction between both types of attractors is a significant step to better understand some critical aspects of biology. We applied and evaluated the proposed approach on randomly generated Boolean networks and the obtained results highlight the benefits of this approach, and match with some conjectured results in biology.


Author(s):  
Filipe Gouveia ◽  
Inês Lynce ◽  
Pedro T. Monteiro

AbstractMotivationComplex cellular processes can be represented by biological regulatory networks. Computational models of such networks have successfully allowed the reprodution of known behaviour and to have a better understanding of the associated cellular processes. However, the construction of these models is still mainly a manual task, and therefore prone to error. Additionally, as new data is acquired, existing models must be revised. Here, we propose a model revision approach of Boolean logical models capable of repairing inconsistent models confronted with time-series observations. Moreover, we account for both synchronous and asynchronous dynamics.ResultsThe proposed tool is tested on five well known biological models. Different time-series observations are generated, consistent with these models. Then, the models are corrupted with different random changes. The proposed tool is able to repair the majority of the corrupted models, considering the generated time-series observations. Moreover, all the optimal solutions to repair the models are produced.Contact{[email protected],[email protected]}


Author(s):  
Steffen Schober ◽  
David Kracht ◽  
Reinhard Heckel ◽  
Martin Bossert

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