Journal: Molecular Systems Biology
Article Title: Modeling tissue‐relevant Caenorhabditis elegans metabolism at network, pathway, reaction, and metabolite levels
doi: 10.15252/msb.20209649
Figure Lengend Snippet: Computational pipeline to predict tissue function using tissue‐level gene expression data. Cartoon outlining the update of the C. elegans metabolic network model. GPR, gene‐protein‐reaction association. Conceptual overview of integration of iCEL1314 with four categories of genes: highly, moderately, lowly, and rarely expressed. The predicted flux state in a tissue is a flux distribution that trails reactions associated with highly expressed genes in that tissue, while avoiding those associated with lowly expressed and rarely expressed genes. Circles and arrows indicate metabolites and reactions, respectively. Black arrows show flux, with thicker arrows indicating higher flux. Boxes depict enzymes encoded by genes that have expression levels indicated by color. Dashed arrows indicate reactions with no flux in the preliminary flux distribution stage according to Fig B but are then detected as latent reactions and are forced to carry flux when possible (see text for details). To derive tissue‐relevant metabolic network functions, a gene expression dataset obtained with single‐cell RNA‐seq of L2 animals was used (Cao et al , ). Single‐cell data were combined by the authors to provide high‐quality gene expression data for the seven tissues shown. Distribution of metabolic genes in iCEL1314 in different expression categories in each individual tissue and in all tissues combined, with colors as in (B). For the combination of data, the union set of highly expressed genes and the intersection set of rarely and lowly expressed genes are illustrated with corresponding colors. One gene which was lowly expressed in some tissues and rarely expressed in others is not shown in the combined data.
Article Snippet: iCEL1314 (genome‐scale metabolic network model of C. elegans ) , This study, Yilmaz & Walhout ( ) , BioModels (Chelliah et al , ): MODEL2007280001 .
Techniques: Gene Expression, Expressing, RNA Sequencing