Genetic Dissection of Neural Circuit Anatomy Underlying Feeding Behavior in Drosophila: Distinct Classes of Hugin-expressing Neurons.
From: Institut für Genetik, Forschungszentrum Karlsruhe, 76021 Karlsruhe, Germany.
The Journal of comparative neurology
- Publish Date: Jun 2007
- ISSN: 0021-9967
- Volume: 502
- Issue: 5
- Pages: 848-56
- Medium: Print
- Language: English
- Citation (JAMA): Bader Rüdiger, Colomb Julien, Pankratz Bettina, et al. Genetic Dissection of Neural Circuit Anatomy Underlying Feeding Behavior in Drosophila: Distinct Classes of Hugin-expressing Neurons.. J. Comp. Neurol. Jun 2007;502:848-56
Abstract
The hugin gene of Drosophila encodes a neuropeptide with homology to mammalian neuromedin U. The hugin-expressing neurons are localized exclusively to the subesophageal ganglion of the central nervous system and modulate feeding behavior in response to nutrient signals. These neurons send neurites to the protocerebrum, the ventral nerve cord, the ring gland, and the pharynx and may interact with the gustatory sense organs. In this study, we have investigated the morphology of the hugin neurons at a single-cell level by using clonal analysis. We show that single cells project to only one of the four major targets. In addition, the neurites of the different hugin cells overlap in a specific brain region lateral to the foramen of the esophagus, which could be a new site of neuropeptide release for feeding regulation. Our study reveals novel complexity in the morphology of individual hugin neurons, which has functional implication for how they coordinate feeding behavior and growth.
Mesh Headings (Keywords): Animals, Animals, Genetically Modified, Behavior, Animal, Drosophila, Drosophila Proteins, Feeding Behavior, Ganglia, Invertebrate, Green Fluorescent Proteins, Nerve Net, Neurites, Neurons, Neuropeptides
Check for Full Text / PubMed Unique Identifier (PMID): 17436293
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