Large-Scale Computational Modeling of Genetic Regulatory Networks

  • Authors:
  • M. Stetter;G. Deco;M. Dejori

  • Affiliations:
  • Siemens AG, Corporate Technology, Information and Communications, CT IC 4, 81730 Munich, Germany (author for correspondence, e-mail: stetter@siemens.com);University Pompeu Fabra, Technology Department, 08003 Barcelona, Spain;Siemens AG, Corporate Technology, Information and Communications, CT IC 4, 81730 Munich, Germany&semi/ Department of Computer Science, Technical University of Munich, 85747 Garching, Germany

  • Venue:
  • Artificial Intelligence Review
  • Year:
  • 2003

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Abstract

The perhaps most important signaling network in living cells is constitutedby the interactions of proteins with the genome – the regulatory geneticnetwork of the cell. From a system-level point of view, the variousinteractions and control loops, which form a genetic network, represent thebasis upon which the vast complexity and flexibility of life processesemerges. Here we provide a review over some efforts towards gaining aquantitative understanding of regulatory genetic networks by means of largescale computational models. After a brief description of the biologicalprinciples of gene regulation, we summarize recent advances in massivegene-expression measurements by DNA-microarrays, which form the to date mostpowerful data basis for models of genetic networks. One class of models suchas reaction-diffusion networks and nonlinear dynamical descriptions arebiased towards using explicit molecular biological knowledge. A secondclass, centered around machine learning approaches like neural networks andBayesian networks, adopts a more data-driven approach and thereby makesmassive use of the novel gene expression measurement techniques.