Qualitative simulation of genetic regulatory networks using piecewise-linear models.

نویسندگان

  • Hidde De Jong
  • Jean-Luc Gouzé
  • Céline Hernandez
  • Michel Page
  • Tewfik Sari
  • Johannes Geiselmann
چکیده

In order to cope with the large amounts of data that have become available in genomics, mathematical tools for the analysis of networks of interactions between genes, proteins, and other molecules are indispensable. We present a method for the qualitative simulation of genetic regulatory networks, based on a class of piecewise-linear (PL) differential equations that has been well-studied in mathematical biology. The simulation method is well-adapted to state-of-the-art measurement techniques in genomics, which often provide qualitative and coarse-grained descriptions of genetic regulatory networks. Given a qualitative model of a genetic regulatory network, consisting of a system of PL differential equations and inequality constraints on the parameter values, the method produces a graph of qualitative states and transitions between qualitative states, summarizing the qualitative dynamics of the system. The qualitative simulation method has been implemented in Java in the computer tool Genetic Network Analyzer.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Dealing with Discontinuities in the Qualitative Simulation of Genetic Regulatory Networks

Methods developed for the qualitative simulation of dynamical systems have turned out to be powerful tools for studying genetic regulatory networks. We present a generalization of a simulation method based on piecewise-linear differential equation models that is able to deal with discontinuities. The method is sound and has been implemented in a computer tool called GNA.

متن کامل

Analyse qualitative de la dynamique de réseaux de régulation génique par des modèles linéaires par morceaux

The functioning and development of living organisms is controlled by large and complex networks of genes, proteins, small molecules, and their interactions, so-called genetic regulatory networks. In this review we discuss a method for the qualitative modeling and simulation of genetic regulatory networks which is well-adapted to the current lack of precise and quantitative biological data. The ...

متن کامل

Piecewise-linear models of genetic regulatory networks: theory and example

The experimental study of genetic regulatory networks has made tremendous progress in recent years resulting in a huge amount of data on the molecular interactions in model organisms. It is therefore not possible anymore to intuitively understand how the genes and interactions together influence the behavior of the system. In order to answer such questions, a rigorous modeling and analysis appr...

متن کامل

Parallel Analysis of Genetic Regulatory Networks

Studies of cells in silico can greatly reduce the need for expensive and prolonged laboratory experimentation. The use of model checking for the analysis of biological networks has attracted much attention [2, 6]. The individual approaches differ in reduction methods used for discretization of biological models and model-checking tools employed for the analysis. Our approach focuses on analysis...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Bulletin of mathematical biology

دوره 66 2  شماره 

صفحات  -

تاریخ انتشار 2004