iScience | VOL. 25
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Trans-omics analysis of insulin action reveals a cell growth subnetwork which co-regulates anabolic processes

Publication Date May 1, 2022

Abstract

Insulin signaling promotes anabolic metabolism to regulate cell growth through multi-omic interactions. To obtain a comprehensive view of the cellular responses to insulin, we constructed a trans-omic network of insulin action in Drosophila cells that involves the integration of multi-omic data sets. In this network, 14 transcription factors, including Myc, coordinately upregulate the gene expression of anabolic processes such as nucleotide synthesis, transcription, and translation, consistent with decreases in metabolites such as nucleotide triphosphates and proteinogenic amino acids required for transcription and translation. Next, as cell growth is required for cell proliferation and insulin can stimulate proliferation in a context-dependent manner, we integrated the trans-omic network with results from a CRISPR functional screen for cell proliferation. This analysis validates the role of a Myc-mediated subnetwork that coordinates the activation of genes involved in anabolic processes required for cell growth.

Concepts
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Anabolic Processes
Cell Growth
Context-dependent Manner
Drosophila Cells
Nucleotide Synthesis
Nucleotide Triphosphates
Network Of Action
Multi-omic Data Sets
Trans-omics Analysis
Proteinogenic Amino Acids

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