Growth differentiation factor 15 is a myomitokine governing systemic energy homeostasis

Hyo Kyun Chung, Dongryeol Ryu, Koon Soon Kim, Joon Young Chang, Yong Kyung Kim, Hyon Seung Yi, Seul Gi Kang, Min Jeong Choi, Seong Eun Lee, Saet Byel Jung, Min Jeong Ryu, Soung Jung Kim, Gi Ryang Kweon, Hail Kim, Jung Hwan Hwang, Chul Ho Lee, Se Jin Lee, Christopher E. Wall, Michael Downes, Ronald M. EvansJohan Auwerx, Minho Shong

Research output: Contribution to journalArticlepeer-review

Abstract

Reduced mitochondrial electron transport chain activity promotes longevity and improves energy homeostasis via cell-autonomous and-non-autonomous factors in multiple model systems. This mitohormetic effect is thought to involve the mitochondrial unfolded protein response (UPRmt), an adaptive stress-response pathway activated by mitochondrial proteotoxic stress. Using mice with skeletal muscle-specific deficiency of Crif1 (muscle-specific knockout [MKO]), an integral protein of the large mitoribosomal subunit (39S), we identified growth differentiation factor 15 (GDF15) as a UPRmt-associated cell-non-autonomous myomitokine that regulates systemic energy homeostasis. MKO mice were protected against obesity and sensitized to insulin, an effect associated with elevated GDF15 secretion after UPRmt activation. In ob/ob mice, administration of recombinant GDF15 decreased body weight and improved insulin sensitivity, which was attributed to elevated oxidative metabolism and lipid mobilization in the liver, muscle, and adipose tissue. Thus, GDF15 is a potent mitohormetic signal that safeguards against the onset of obesity and insulin resistance.

Original languageEnglish (US)
Pages (from-to)149-165
Number of pages17
JournalJournal of Cell Biology
Volume216
Issue number1
DOIs
StatePublished - 2017

ASJC Scopus subject areas

  • Cell Biology

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