Construction and Control of Genetic Regulatory Networks:A Multivariate Markov Chain Approach

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DOI: 10.4236/jbise.2008.11003    3,796 Downloads   8,296 Views   Citations


In the post-genomic era, the construction and control of genetic regulatory networks using gene expression data is a hot research topic. Boolean networks (BNs) and its extension Probabilistic Boolean Networks (PBNs) have been served as an effective tool for this purpose. However, PBNs are difficult to be used in practice when the number of genes is large because of the huge computational cost. In this paper, we propose a simplified multivariate Markov model for approximating a PBN The new model can preserve the strength of PBNs, the ability to capture the inter-dependence of the genes in the network, qnd at the same time reduce the complexity of the network and therefore the computational cost. We then present an optimal control model with hard constraints for the purpose of control/intervention of a genetic regulatory network. Numerical experimental examples based on the yeast data are given to demonstrate the effectiveness of our proposed model and control policy.

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Zhang, S. , Wu, L. , Ching, W. , Jiao, Y. and Chan, R. (2008) Construction and Control of Genetic Regulatory Networks:A Multivariate Markov Chain Approach. Journal of Biomedical Science and Engineering, 1, 15-21. doi: 10.4236/jbise.2008.11003.


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