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Human diseasome: A complex network approach of human diseases

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Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)

Abstract

Understanding of disease mechanisms is an important goal in human systems biology. Towards this goal, we construct and study the ``human diseasome,'' that summarizes all known disorder-gene associations to provide a global systems-level relationship between all human genetic disorders and genes implicated therein, offering a platform to integrate other human genomic and proteomic informations into single graph-theoretic framework. The obtained human diseasome suggests that diseases are modular: disorders of similar type aggregates reflecting the common genetic origin of many human disorders, and genes implicated in similar disorders show both higher likelihood of physical interactions between their products and higher expression profiling similarity for their transcripts, suggesting the presence of disease-specific functional modules. We present the applications of the diseasome concept such as to the gene centrality assessment, disease gene prediction, and the drug-target network, and discuss the prospect of its extension.

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