Cited by 214Neurobiology and Insect Physiology ResearchNeuroscience and Neuropharmacology ResearchRegulation of Appetite and Obesity

Drosophila mushroom bodies integrate hunger and satiety signals to control innate food-seeking behavior

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Tsao, Chang-Hui, Chen, Chien-Chun, Lin, Chen-Han, Yang, Hao-Yu, Lin, Suewei·2018·eLife

Abstract

The fruit fly can evaluate its energy state and decide whether to pursue food-related cues. Here, we reveal that the mushroom body (MB) integrates hunger and satiety signals to control food-seeking behavior. We have discovered five pathways in the MB essential for hungry flies to locate and approach food. Blocking the MB-intrinsic Kenyon cells (KCs) and the MB output neurons (MBONs) in these pathways impairs food-seeking behavior. Starvation bi-directionally modulates MBON responses to a food odor, suggesting that hunger and satiety controls occur at the KC-to-MBON synapses. These controls are mediated by six types of dopaminergic neurons (DANs). By manipulating these DANs, we could inhibit food-seeking behavior in hungry flies or promote food seeking in fed flies. Finally, we show that the DANs potentially receive multiple inputs of hunger and satiety signals. This work demonstrates an information-rich central circuit in the fly brain that controls hunger-driven food-seeking behavior.

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  • Other aminergic systems associated with the mushroom bodies modify the neural output of the mushroom body such that food-associated stimuli are only attractive if an insect is food-deprived.

    “For example, other aminergic systems associated with the mushroom bodies modify the neural output of the mushroom such that food-associated stimuli are only attractive if an insect is food-deprived [74].”

    From Phenomenal interface theory: a model for basal consciousness (2025) · cites this paper as [74]

    The Results sections on dopaminergic neurons and mushroom-body output neurons report that hunger-related dopamine signaling regulates flies’ food-seeking behavior and that starvation changes output-neuron responses to yeast odor. The paper also says hungry flies, rather than fed flies, approach yeast food. Its experiments concern fruit flies and yeast odor, so the claim’s broader wording about insects and food-associated stimuli is not established. (LLM, conf=0.84)

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Authors
Tsao, C.-H., Chen, C.-C., Lin, C.-H., Yang, H.-Y., & Lin, S.
Affiliations
Institute of Molecular Biology, Academia Sinica (TW)
Corresponding author
Lin, Suewei
Venue
eLife
Published
2018-03-16
Volume
7
ISSN
2050-084X (ISSN-L)
OpenAlex
W2790008006
Cited by
214
References
131
Citations by year
2026: 26 · 2025: 28 · 2024: 36 · 2023: 33 · 2022: 22 · 2021: 26 · 2020: 20 · 2019: 16 · 2018: 7
FWCI
7.85
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Ministry of Science and Technology, Taiwan (105-2628-B-001-005-MY3)
  • Academia Sinica
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
mushroom body, hunger, satiety, food-seeking behavior, Kenyon cells, mushroom body output neurons, dopaminergic neurons, starvation, food odor, energy state, Drosophila, neural circuits
MeSH terms
Animals, Appetitive Behavior, Brain, Drosophila melanogaster, Feeding Behavior, Food, Hunger, Instinct, Satiety Response, Starvation, Gene Expression, Mushroom Bodies, Drosophila Proteins, Dopaminergic Neurons

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