Taotie neurons regulate appetite in Drosophila

Nat Commun. 2016 Dec 7:7:13633. doi: 10.1038/ncomms13633.

Abstract

The brain has an essential role in maintaining a balance between energy intake and expenditure of the body. Deciphering the processes underlying the decision-making for timely feeding of appropriate amounts may improve our understanding of physiological and psychological disorders related to feeding control. Here, we identify a group of appetite-enhancing neurons in a behavioural screen for flies with increased appetite. Manipulating the activity of these neurons, which we name Taotie neurons, induces bidirectional changes in feeding motivation. Long-term stimulation of Taotie neurons results in flies with highly obese phenotypes. Furthermore, we show that the in vivo activity of Taotie neurons in the neuroendocrine region reflects the hunger/satiety states of un-manipulated animals, and that appetitive-enhancing Taotie neurons control the secretion of insulin, a known regulator of feeding behaviour. Thus, our study reveals a new set of neurons regulating feeding behaviour in the high brain regions that represents physiological hunger states and control feeding behaviour in Drosophila.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Appetite / physiology*
  • Behavior, Animal
  • Drosophila melanogaster / physiology*
  • Feeding Behavior / physiology
  • Female
  • Hunger / physiology
  • Insulin / metabolism
  • Insulin Secretion
  • Neurons / physiology*
  • Obesity / physiopathology
  • Phenotype
  • Satiation / physiology
  • Starvation / physiopathology

Substances

  • Insulin