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A benchmark of RNA-seq data normalization methods for transcriptome mapping on human genome-scale metabolic networks.
- Source :
- NPJ Systems Biology & Applications; 10/24/2024, Vol. 10 Issue 1, p1-12, 12p
- Publication Year :
- 2024
-
Abstract
- Genome-scale metabolic models (GEMs) cover the entire list of metabolic genes in an organism and associated reactions, in a tissue/condition non-specific manner. RNA-seq provides crucial information to make the GEMs condition-specific. Integrative Metabolic Analysis Tool (iMAT) and Integrative Network Inference for Tissues (INIT) are the two most popular algorithms to create condition-specific GEMs from human transcriptome data. The normalization method of choice for raw RNA-seq count data affects the model content produced by these algorithms and their predictive accuracy. However, a benchmark of the RNA-seq normalization methods on the performance of iMAT and INIT algorithms is missing in the literature. Another important phenomenon is covariates such as age and gender in a dataset, and they can affect the predictivity of analysis. In this study, we aimed to compare five different RNA-seq data normalization methods (TPM, FPKM, TMM, GeTMM, and RLE) and covariate adjusted versions of the normalized data by mapping them on a human GEM using the iMAT and INIT algorithms to generate personalized metabolic models. We used RNA-seq data for Alzheimer's disease (AD) and lung adenocarcinoma (LUAD) patients. The results demonstrated that RNA-seq data normalized by the RLE, TMM, or GeTMM methods enabled the production of condition-specific metabolic models with considerably low variability in terms of the number of active reactions compared to the within-sample normalization methods (FPKM, TPM). Using these models, we could more accurately capture the disease-associated genes (average accuracy of ~0.80 for AD and ~0.67 for LUAD) for the RLE, TMM, and GeTMM normalization methods. An increase in the accuracies was observed for all the methods when covariate adjustment was applied. We found a similar accuracy trend when we compared the metabolites of perturbed reactions to metabolome data for AD. Together, our benchmark study shows that the between-sample RNA-seq normalization methods reduce false positive predictions at the expense of missing some true positive genes when mapped on GEMs. [ABSTRACT FROM AUTHOR]
- Subjects :
- ALZHEIMER'S disease
METABOLIC models
RNA sequencing
DATA mapping
PRODUCTION methods
Subjects
Details
- Language :
- English
- ISSN :
- 20567189
- Volume :
- 10
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- NPJ Systems Biology & Applications
- Publication Type :
- Academic Journal
- Accession number :
- 180501424
- Full Text :
- https://doi.org/10.1038/s41540-024-00448-z