Discriminating Dietary Responses by Combining Transcriptomics and Metabolomics Data in Nutrition Intervention Studies

Kathryn J. Burton-Pimentel*, Grégory Pimentel, Maria Hughes, Charlotte C.J.R. Michielsen, Attia Fatima, Nathalie Vionnet, Lydia A. Afman, Helen M. Roche, Lorraine Brennan, Mark Ibberson, Guy Vergères

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Scope: Combining different “omics” data types in a single, integrated analysis may better characterize the effects of diet on human health. Methods and results: The performance of two data integration tools, similarity network fusion tool (SNFtool) and Data Integration Analysis for Biomarker discovery using Latent variable approaches for “Omics” (DIABLO; MixOmics), in discriminating responses to diet and metabolic phenotypes is investigated by combining transcriptomics and metabolomics datasets from three human intervention studies: a postprandial crossover study testing dairy foods (n = 7; study 1), a postprandial challenge study comparing obese and non-obese subjects (n = 13; study 2); and an 8-week parallel intervention study that assessed three diets with variable lipid content on fasting parameters (n = 39; study 3). In study 1, combining datasets using SNF or DIABLO significantly improve sample classification. For studies 2 and 3, the value of SNF integration depends on the dietary groups being compared, while DIABLO discriminates samples well but does not perform better than transcriptomic data alone. Conclusion: The integration of associated “omics” datasets can help clarify the subtle signals observed in nutritional interventions. The performance of each integration tool is differently influenced by study design, size of the datasets, and sample size.

Original languageEnglish
Article number2000647
JournalMolecular Nutrition and Food Research
Volume65
Issue number4
Early online date16 Dec 2020
DOIs
Publication statusPublished - Feb 2021

Keywords

  • classification
  • data integration
  • Data Integration Analysis for Biomarker discovery using Latent variable approaches for “Omics”
  • nutritional intervention
  • Similarity Network Fusion tool

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