Drosophila ALS Regulates Growth and Metabolism through Functional Interaction with Insulin-Like Peptides

Nathalie Arquier, Charles Géminard, Marc Bourouis, Gisèle Jarretou, Basil Honegger, Alexandre Paix, Pierre Léopold

Research output: Contribution to journalArticle

Abstract

In metazoans, factors of the insulin family control growth, metabolism, longevity, and fertility in response to environmental cues. In Drosophila, a family of seven insulin-like peptides, called Dilps, activate a common insulin receptor. Some Dilp peptides carry both metabolic and growth functions, raising the possibility that various binding partners specify their functions. Here we identify dALS, the fly ortholog of the vertebrate insulin-like growth factor (IGF)-binding protein acid-labile subunit (ALS), as a Dilp partner that forms a circulating trimeric complex with one molecule of Dilp and one molecule of Imp-L2, an IgG-family molecule distantly related to mammalian IGF-binding proteins (IGFBPs). We further show that dALS antagonizes Dilp function to control animal growth as well as carbohydrate and fat metabolism. These results lead us to propose an evolutionary perspective in which ALS function appeared prior to the separation between metabolic and growth effects that are associated with vertebrate insulin and IGFs.

Original languageEnglish (US)
Pages (from-to)333-338
Number of pages6
JournalCell Metabolism
Volume7
Issue number4
DOIs
Publication statusPublished - Apr 9 2008
Externally publishedYes

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Keywords

  • HUMDISEASE
  • SIGNALING

ASJC Scopus subject areas

  • Physiology
  • Molecular Biology
  • Cell Biology

Cite this

Arquier, N., Géminard, C., Bourouis, M., Jarretou, G., Honegger, B., Paix, A., & Léopold, P. (2008). Drosophila ALS Regulates Growth and Metabolism through Functional Interaction with Insulin-Like Peptides. Cell Metabolism, 7(4), 333-338. https://doi.org/10.1016/j.cmet.2008.02.003