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2016 ; 44
(10
): e100
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NetDecoder: a network biology platform that decodes context-specific biological
networks and gene activities
#MMPMID26975659
da Rocha EL
; Ung CY
; McGehee CD
; Correia C
; Li H
Nucleic Acids Res
2016[Jun]; 44
(10
): e100
PMID26975659
show ga
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.