Transcriptomic coordination in the human metabolic network reveals links between n-3 fat intake, adipose tissue gene expression and metabolic health

Melissa J. Morine, Audrey C. Tierney, Ben van Ommen, Hannelore Daniel, Sinead Toomey, Ingrid M.F. Gjelstad, Isobel C. Gormley, Pablo Pérez-Martinez, Christian A. Drevon, Jose López-Miranda, Helen M. Roche

Research output: Contribution to journalArticlepeer-review

Abstract

Understanding the molecular link between diet and health is a key goal in nutritional systems biology. As an alternative to pathway analysis, we have developed a joint multivariate and network-based approach to analysis of a dataset of habitual dietary records, adipose tissue transcriptomics and comprehensive plasma marker profiles from human volunteers with the Metabolic Syndrome. With this approach we identified prominent co-expressed sub-networks in the global metabolic network, which showed correlated expression with habitual n-3 PUFA intake and urinary levels of the oxidative stress marker 8-iso-PGF. These sub-networks illustrated inherent cross-talk between distinct metabolic pathways, such as between triglyceride metabolism and production of lipid signalling molecules. In a parallel promoter analysis, we identified several adipogenic transcription factors as potential transcriptional regulators associated with habitual n-3 PUFA intake. Our results illustrate advantages of network-based analysis, and generate novel hypotheses on the transcriptomic link between habitual n-3 PUFA intake, adipose tissue function and oxidative stress.

Original languageEnglish
Article numbere1002223
JournalPLoS Computational Biology
Volume7
Issue number11
DOIs
Publication statusPublished - Nov 2011
Externally publishedYes

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