FGF21 induces PGC-1α and regulates carbohydrate and fatty acid metabolism during the adaptive starvation response

Matthew J. Potthoff, Takeshi Inagaki, Santhosh Satapati, Xunshan Ding, Tianteng He, Regina Goetz, Moosa Mohammadi, Brian N. Finck, David J. Mangelsdorf, Steven A. Kliewer, Shawn C. Burgess

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Abstract

The liver plays a crucial role in mobilizing energy during nutritional deprivation. During the early stages of fasting, hepatic glycogenolysis is a primary energy source. As fasting progresses and glycogen stores are depleted, hepatic gluconeogenesis and ketogenesis become major energy sources. Here, we show that fibroblast growth factor 21 (FGF21), a hormone that is induced in liver by fasting, induces hepatic expression of peroxisome proliferator- activated receptor γ coactivator protein-1α (PGC-1α), a key transcriptional regulator of energy homeostasis, and causes corresponding increases in fatty acid oxidation, tricarboxylic acid cycle flux, and gluconeogenesis without increasing glycogenolysis. Mice lacking FGF21 fail to fully induce PGC-1α expression in response to a prolonged fast and have impaired gluconeogenesis and ketogenesis. These results reveal an unexpected relationship between FGF21 and PGC-1α and demonstrate an important role for FGF21 in coordinately regulating carbohydrate and fatty acid metabolism during the progression from fasting to starvation.

Original languageEnglish (US)
Pages (from-to)10853-10858
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume106
Issue number26
DOIs
StatePublished - Jun 30 2009

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Starvation
Fatty Acids
Carbohydrates
Gluconeogenesis
Fasting
Liver
Glycogenolysis
Peroxisome Proliferator-Activated Receptors
Citric Acid Cycle
Glycogen
Homeostasis
fibroblast growth factor 21
Hormones
Proteins

Keywords

  • Gluconeogenesis
  • Glycogenolysis
  • Ketogenesis
  • Lipid metabolism
  • Liver

ASJC Scopus subject areas

  • General

Cite this

FGF21 induces PGC-1α and regulates carbohydrate and fatty acid metabolism during the adaptive starvation response. / Potthoff, Matthew J.; Inagaki, Takeshi; Satapati, Santhosh; Ding, Xunshan; He, Tianteng; Goetz, Regina; Mohammadi, Moosa; Finck, Brian N.; Mangelsdorf, David J.; Kliewer, Steven A.; Burgess, Shawn C.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 106, No. 26, 30.06.2009, p. 10853-10858.

Research output: Contribution to journalArticle

Potthoff, Matthew J. ; Inagaki, Takeshi ; Satapati, Santhosh ; Ding, Xunshan ; He, Tianteng ; Goetz, Regina ; Mohammadi, Moosa ; Finck, Brian N. ; Mangelsdorf, David J. ; Kliewer, Steven A. ; Burgess, Shawn C. / FGF21 induces PGC-1α and regulates carbohydrate and fatty acid metabolism during the adaptive starvation response. In: Proceedings of the National Academy of Sciences of the United States of America. 2009 ; Vol. 106, No. 26. pp. 10853-10858.
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