iScience (May 2022)

Trans-omics analysis of insulin action reveals a cell growth subnetwork which co-regulates anabolic processes

  • Akira Terakawa,
  • Yanhui Hu,
  • Toshiya Kokaji,
  • Katsuyuki Yugi,
  • Keigo Morita,
  • Satoshi Ohno,
  • Yifei Pan,
  • Yunfan Bai,
  • Andrey A. Parkhitko,
  • Xiaochun Ni,
  • John M. Asara,
  • Martha L. Bulyk,
  • Norbert Perrimon,
  • Shinya Kuroda

Journal volume & issue
Vol. 25, no. 5
p. 104231

Abstract

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Summary: 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.

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