Inference of gene regulatory networks and compound mode of action from time course gene expression profiles

  • Authors:
  • Mukesh Bansal;Giusy Della Gatta;Diego Di Bernardo

  • Affiliations:
  • Telethon Institute of Genetics and Medicine Via P. Castellino 111, 80131 Naples, Italy;Telethon Institute of Genetics and Medicine Via P. Castellino 111, 80131 Naples, Italy;Telethon Institute of Genetics and Medicine Via P. Castellino 111, 80131 Naples, Italy

  • Venue:
  • Bioinformatics
  • Year:
  • 2006

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Abstract

Motivation: Time series expression experiments are an increasingly popular method for studying a wide range of biological systems. Here we developed an algorithm that can infer the local network of gene--gene interactions surrounding a gene of interest. This is achieved by a perturbation of the gene of interest and subsequently measuring the gene expression profiles at multiple time points. We applied this algorithm to computer simulated data and to experimental data on a nine gene network in Escherichia coli. Results: In this paper we show that it is possible to recover the gene regulatory network from a time series data of gene expression following a perturbation to the cell. We show this both on simulated data and on a nine gene subnetwork part of the DNA-damage response pathway (SOS pathway) in the bacteria E. coli. Contact: dibernardo@tigem.it Supplementary information: Supplementary data are available at http://dibernado.tigem.it