4.8 Article

NetDecoder: a network biology platform that decodes context-specific biological networks and gene activities

期刊

NUCLEIC ACIDS RESEARCH
卷 44, 期 10, 页码 -

出版社

OXFORD UNIV PRESS
DOI: 10.1093/nar/gkw166

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资金

  1. National Institutes of Health [CA196631-01A1, 1U54GM114838-01]
  2. Mayo Clinic Foundation, Mayo Clinic Center for Individualized Medicine
  3. Donors Cure Foundation

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The sequential chain of interactions altering the binary state of a biomolecule represents the 'information flow' within a cellular network that determines phenotypic properties. Given the lack of computational tools to dissect context-dependent networks and gene activities, we developed NetDecoder, a network biology platform that models context-dependent information flows using pairwise phenotypic comparative analyses of protein-protein interactions. Using breast cancer, dyslipidemia and Alzheimer's disease as case studies, we demonstrate NetDecoder dissects subnetworks to identify key players significantly impacting cell behaviour specific to a given disease context. We further show genes residing in disease-specific subnetworks are enriched in disease-related signalling pathways and information flow profiles, which drive the resulting disease phenotypes. We also devise a novel scoring scheme to quantify key genes-network routers, which influence many genes, key targets, which are influenced by many genes, and high impact genes, which experience a significant change in regulation. We show the robustness of our results against parameter changes. Our network biology platform includes freely available source code (http://www.NetDecoder.org) for researchers to explore genome-wide context-dependent information flow profiles and key genes, given a set of genes of particular interest and transcriptome data. More importantly, NetDecoder will enable researchers to uncover context-dependent drug targets.

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