Network-Based Analysis of Affected Biological Processes in Type 2 Diabetes Models

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Network-Based Analysis of Affected Biological Processes in Type 2 Diabetes Models

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Title: Network-Based Analysis of Affected Biological Processes in Type 2 Diabetes Models
Author: Liu, Manway; Liberzon, Arthur; Lai, Weil R; Kasif, Simon; Kong, Sek Won Won; Park, Peter J.; Kohane, Isaac Samuel

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Citation: Liu, Manway, Arthur Liberzon, Sek Won Kong, Weil R. Lai, Peter J. Park, Isaac S. Kohane, and Simon Kasif. 2007. Network-based analysis of affected biological processes in type 2 diabetes models. PLoS Genetics 3(6): e96.
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Abstract: Type 2 diabetes mellitus is a complex disorder associated with multiple genetic, epigenetic, developmental, and environmental factors. Animal models of type 2 diabetes differ based on diet, drug treatment, and gene knockouts, and yet all display the clinical hallmarks of hyperglycemia and insulin resistance in peripheral tissue. The recent advances in gene-expression microarray technologies present an unprecedented opportunity to study type 2 diabetes mellitus at a genome-wide scale and across different models. To date, a key challenge has been to identify the biological processes or signaling pathways that play significant roles in the disorder. Here, using a network-based analysis methodology, we identified two sets of genes, associated with insulin signaling and a network of nuclear receptors, which are recurrent in a statistically significant number of diabetes and insulin resistance models and transcriptionally altered across diverse tissue types. We additionally identified a network of protein–protein interactions between members from the two gene sets that may facilitate signaling between them. Taken together, the results illustrate the benefits of integrating high-throughput microarray studies, together with protein–protein interaction networks, in elucidating the underlying biological processes associated with a complex disorder.
Published Version: doi:10.1371/journal.pgen.0030096
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