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Genetic identification of thiosulfate sulfurtransferase as an adipocyte-expressed antidiabetic target in mice selected for leanness

Research output: Contribution to journalArticle

  • Jasmina Beltram
  • Clare McFadden
  • Sergio Rodriguez-Cuenca
  • Matthew T G Gibbins
  • José Maria Moreno-Navarrete
  • Steven C Munger
  • Karen L Svenson
  • Annalisa Gastaldello
  • Lynne Ramage
  • Maximilian Zeyda
  • Zhao V Wang
  • Alexander F Howie
  • Aila Saari
  • Petra Sipilä
  • Thomas M Stulnig
  • Vilmundur Gudnason
  • Gary A Churchill
  • Antonio Vidal-Puig
  • José Manuel Fernandez-Real
  • Valur Emilsson
  • Simon Horvat

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Original languageEnglish
JournalNature Medicine
DOIs
Publication statusPublished - 6 Jun 2016

Abstract

The discovery of genetic mechanisms for resistance to obesity and diabetes may illuminate new therapeutic strategies for the treatment of this global health challenge. We used the polygenic 'lean' mouse model, which has been selected for low adiposity over 60 generations, to identify mitochondrial thiosulfate sulfurtransferase (Tst; also known as rhodanese) as a candidate obesity-resistance gene with selectively increased expression in adipocytes. Elevated adipose Tst expression correlated with indices of metabolic health across diverse mouse strains. Transgenic overexpression of Tst in adipocytes protected mice from diet-induced obesity and insulin-resistant diabetes. Tst-deficient mice showed markedly exacerbated diabetes, whereas pharmacological activation of TST ameliorated diabetes in mice. Mechanistically, TST selectively augmented mitochondrial function combined with degradation of reactive oxygen species and sulfide. In humans, TST mRNA expression in adipose tissue correlated positively with insulin sensitivity in adipose tissue and negatively with fat mass. Thus, the genetic identification of Tst as a beneficial regulator of adipocyte mitochondrial function may have therapeutic significance for individuals with type 2 diabetes.

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