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Discriminating Dietary Responses by Combining Transcriptomics and Metabolomics Data in Nutrition Intervention Studies
Kathryn J Burton-Pimentel1, Grégory Pimentel1, Maria Hughes2,3,4
1Federal Department of Economic Affairs, Education and Research EAER, Agroscope, Schwarzenburgstrasse 161, Bern, 3003, Switzerland.
Molecular Nutrition & Food Research
|December 16, 2020
Summary
Integrating "omics" data enhances understanding of diet
Area of Science:
- Nutritional science
- Bioinformatics
- Systems biology
Background:
- Dietary interventions offer insights into human health.
- Integrating multi-omics data can reveal subtle metabolic responses.
- Understanding diet-health interactions requires advanced analytical approaches.
Purpose of the Study:
- To evaluate two data integration tools: Similarity Network Fusion (SNF) and DIABLO (MixOmics).
- To assess their performance in discriminating diet responses using transcriptomics and metabolomics data.
- To compare tool efficacy across different human intervention study designs.
Main Methods:
- Combined transcriptomics and metabolomics datasets from three human intervention studies.
- Applied SNFtool and DIABLO for data integration and sample classification.
- Analyzed performance based on study design, dataset size, and sample size.
Main Results:
- Both SNF and DIABLO improved sample classification in study 1 (postprandial dairy foods).
- SNF's utility in studies 2 and 3 varied with dietary group comparisons.
- DIABLO showed good discrimination but not superior to transcriptomics alone in studies 2 and 3.
Conclusions:
- Integrated multi-omics analysis can clarify nutritional intervention effects.
- The effectiveness of data integration tools depends on study specifics.
- Tool performance is influenced by study design, dataset characteristics, and sample size.

