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Heterogeneous Expression of Drosophila Gustatory Receptors in Enteroendocrine Cells

Journal Article · · PLoS ONE
 [1];  [2]
  1. Sungkyunkwan University, Suwon (Republic of Korea); DOE/OSTI
  2. Sungkyunkwan University, Suwon (Republic of Korea)

The gastrointestinal tract is emerging as a major site of chemosensation in mammalian studies. Enteroendocrine cells are chemosensory cells in the gut which produce regulatory peptides in response to luminal contents to regulate gut physiology, food intake, and glucose homeostasis, among other possible functions. Increasing evidence shows that mammalian taste receptors and taste signaling molecules are expressed in enteroendocrine cells in the gut. Invertebrate models such as Drosophila can provide a simple and genetically tractable system to study the chemosensory functions of enteroendocrine cells in vivo. To establish Drosophila enteroendocrine cells as a model for studying gut chemosensation, we used the GAL4/UAS system to examine the expression of all 68 Gustatory receptors (Grs) in the intestine. We find that 12 Gr-GAL4 drivers label subsets of enteroendocrine cells in the midgut, and examine colocalization of these drivers with the regulatory peptides neuropeptide F (NPF), locustatachykinin (LTK), and diuretic hormone 31 (DH31). RT-PCR analysis provides additional evidence for the presence of Gr transcripts in the gut. Our results suggest that the Drosophila Grs have chemosensory roles in the intestine to regulate physiological functions such as food uptake, nutrient absorption, or sugar homeostasis.

Research Organization:
Sungkyunkwan University, Suwon (Republic of Korea)
Sponsoring Organization:
Faculty Research Fund, Sungkyunkwan University
OSTI ID:
1627491
Journal Information:
PLoS ONE, Journal Name: PLoS ONE Journal Issue: 12 Vol. 6; ISSN 1932-6203
Publisher:
Public Library of Science
Country of Publication:
United States
Language:
English

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Cited By (16)

A mannitol/sorbitol receptor stimulates dietary intake in Tribolium castaneum journal June 2017
Allatostatin A Signalling in Drosophila Regulates Feeding and Sleep and Is Modulated by PDF journal September 2016
Diverse roles for the Drosophila fructose sensor Gr43a journal November 2013
A mannitol/sorbitol receptor stimulates dietary intake in Tribolium castaneum journal October 2017
A cell atlas of the adult Drosophila midgut journal January 2020
Drosophila Gr64e mediates fatty acid sensing via the phospholipase C pathway journal February 2018
An obligatory role for neurotensin in high-fat-diet-induced obesity journal May 2016
A Sugar Gustatory Receptor Identified from the Foregut of Cotton Bollworm Helicoverpa armigera journal December 2012
Expression Patterns of the Drosophila Neuropeptide CCHamide-2 and Its Receptor May Suggest Hormonal Signaling from the Gut to the Brain journal October 2013
Anatomy and Physiology of the Digestive Tract of Drosophila melanogaster journal October 2018
Genetic Dissection of Anopheles gambiae Gut Epithelial Responses to Serratia marcescens journal March 2014
Toxins induce ‘malaise’ behaviour in the honeybee (Apis mellifera) journal August 2014
Taste processing in Drosophila larvae journal October 2015
A Drosophila Model to Decipher the Toxicity of Nanoparticles Taken Through Oral Routes book January 2018
The amazing complexity of insect midgut cells: types, peculiarities, and functions journal July 2019
Identification and functional characterization of D-fructose receptor in an egg parasitoid, Trichogramma chilonis journal June 2019

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