摘要：SummaryMetabolic perturbations can affect gene expression, for instance to rewire metabolism. While numerous efforts have measured gene expression in response to individual metabolic perturbations, methods that determine all metabolic perturbations that affect the expression for a given gene or set of genes have not been available. Here, we use a gene-centered approach to derive a first-pass metabolic regulatory network forCaenorhabditis elegansby performing RNAi of more than 1,400 metabolic genes with a set of 19 promoter reporter strains that express a fluorescent protein in the animal’s intestine. We find that metabolic perturbations generally increase promoter activity, which contrasts with transcription factor (TF) RNAi, which tends to repress promoter activity. We identify several TFs that modulate promoter activity in response to perturbations of the electron transport chain and explore complex genetic interactions among metabolic pathways. This work provides a blueprint for a systems-level understanding of how metabolism affects gene expression.Graphical abstractDisplay OmittedHighlights•RNAi screen delineates the first animal intestinal metabolic regulatory network•In contrast to TF knockdown, metabolic gene RNAi mainly activates promoter activity•Lipid, amino acid, and energy metabolism changes impact promoter activity the most•Several TFs that modulate promoter expression downstream of the ETC were identifiedMolecular biology; Systems biology; Experimental models in systems biology.
