Effect of brain-derived neurotrophic factor (BDNF) on hepatocyte metabolism

Yoni Genzer, Nava Chapnik, Oren Froy*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Brain-derived neurotrophic factor (BDNF) plays crucial roles in the development, maintenance, plasticity and homeostasis of the central and peripheral nervous systems. Perturbing BDNF signaling in mouse brain results in hyperphagia, obesity, hyperinsulinemia and hyperglycemia. Currently, little is known whether BDNF affects liver tissue directly. Our aim was to determine the metabolic signaling pathways activated after BDNF treatment in hepatocytes. Unlike its effect in the brain, BDNF did not lead to activation of the liver AKT pathway. However, AMP protein activated kinase (AMPK) was ∼3 times more active and fatty acid synthase (FAS) ∼2-fold less active, suggesting increased fatty acid oxidation and reduced fatty acid synthesis. In addition, cAMP response element binding protein (CREB) was ∼3.5-fold less active together with its output the gluconeogenic transcript phosphoenolpyruvate carboxykinase (Pepck), suggesting reduced gluconeogenesis. The levels of glycogen synthase kinase 3b (GSK3b) was ∼3-fold higher suggesting increased glycogen synthesis. In parallel, the expression levels of the clock genes Bmal1 and Cry1, whose protein products play also a metabolic role, were ∼2-fold increased and decreased, respectively. In conclusion, BDNF binding to hepatocytes leads to activation of catabolic pathways, such as fatty acid oxidation. In parallel gluconeogenesis is inhibited, while glycogen storage is triggered. This metabolic state mimics that of after breakfast, in which the liver continues to oxidize fat, stops gluconeogenesis and replenishes glycogen stores.

Original languageAmerican English
Pages (from-to)69-74
Number of pages6
JournalInternational Journal of Biochemistry and Cell Biology
Volume88
DOIs
StatePublished - 1 Jul 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

  • AMPK
  • BDNF
  • Fatty acid oxidation
  • Metabolism
  • Signaling

Fingerprint

Dive into the research topics of 'Effect of brain-derived neurotrophic factor (BDNF) on hepatocyte metabolism'. Together they form a unique fingerprint.

Cite this