Obesity control by SHIP inhibition requires pan-paralog inhibition and an intact eosinophil compartment

Sandra Fernandes, Neetu Srivastava, Chiara Pedicone, Raki Sudan, Elizabeth A. Luke, Otto M. Dungan, Angela Pacherille, Shea T. Meyer, Shawn Dormann, Stéphane Schurmans, Benedict J. Chambers, John D. Chisholm, William G. Kerr

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Here we extend the understanding of how chemical inhibition of SHIP paralogs controls obesity. We compare different classes of SHIP inhibitors and find that selective inhibitors of SHIP1 or SHIP2 are unable to prevent weight gain and body fat accumulation during increased caloric intake. Surprisingly, only pan-SHIP1/2 inhibitors (pan-SHIPi) prevent diet-induced obesity. We confirm that pan-SHIPi is essential by showing that dual treatment with SHIP1 and SHIP2 selective inhibitors reduced adiposity during excess caloric intake. Consistent with this, genetic inactivation of both SHIP paralogs in eosinophils or myeloid cells also reduces obesity and adiposity. In fact, pan-SHIPi requires an eosinophil compartment to prevent diet-induced adiposity, demonstrating that pan-SHIPi acts via an immune mechanism. We also find that pan-SHIPi increases ILC2 cell function in aged, obese mice to reduce their obesity. Finally, we show that pan-SHIPi also reduces hyperglycemia, but not via eosinophils, indicating a separate mechanism for glucose control.

Original languageEnglish (US)
Article number106071
JournaliScience
Volume26
Issue number2
DOIs
StatePublished - Feb 17 2023

Keywords

  • Human metabolism
  • Immunology
  • Molecular biology

ASJC Scopus subject areas

  • General

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