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Bioinformatics Advance Access originally published online on October 9, 2007
Bioinformatics 2007 23(24):3409-3411; doi:10.1093/bioinformatics/btm491
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

CellLine, a stochastic cell lineage simulator

Andre S. Ribeiro *, Daniel A. Charlebois and Jason Lloyd-Price

Institute for Biocomplexity and Informatics, University of Calgary, Canada

*To whom correspondence should be addressed.


  Abstract

Summary: We present CellLine, a simulator of the dynamics of gene regulatory networks (GRN) in the cells of a lineage. From user-defined reactions and initial substance quantities, it generates cell lineages, i.e. genealogic pedigrees of cells related through mitotic division. Each cell's dynamics is driven by a delayed stochastic simulation algorithm (delayed SSA), allowing multiple time delayed reactions.

The cells of the lineage can be individually subject to ‘perturbations’, such as gene deletion, duplication and mutation. External interventions, such as adding or removing a substance at a given moment, can be specified. Cell differentiation lineages, where differentiation is stochastically driven or externally induced, can be modeled as well. Finally, CellLine can generate and simulate the dynamics of multiple copies of any given cell of the lineage.

As examples of CellLine use, we simulate the following systems: cell lineages containing a model of the P53-Mdm2 feedback loop, a differentiation lineage where each cell contains a 4 gene repressilator (a bistable circuit), a model of the differentiation of the cells of the retinal mosaic required for color vision in Drosophila melanogaster, where the differentiation pathway depends on one substance's concentration that is controlled by a stochastic process, and a 9 gene GRN to illustrate the advantage of using CellLine rather than simulating multiple independent cells, in cases where the cells of the lineage are dynamically correlated.

Availability: The CellLine program, instructions and examples are available at http://www.cs.tut.fi/~sanchesr/CellLine/CellLine.html

Contact: andre.sanchesribeiro{at}tut.fi

Associate Editor: Limsoon Wong

Received on July 23, 2007; revised on August 20, 2007; accepted on September 23, 2007

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