Cited by 272Receptor Mechanisms and SignalingNeurobiology and Insect Physiology ResearchNeuroscience and Neuropharmacology Research

Rapid, Nongenomic Responses to Ecdysteroids and Catecholamines Mediated by a Novel Drosophila G-Protein-Coupled Receptor

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Srivastava, Deepak P., Yu, Esther J., Kennedy, Karen, Chatwin, Heather, Reale, Vincenzina, Hamon, Maureen, Smith, Trevor, Evans, Peter D.·2005·The Journal of Neuroscience

Abstract

Nongenomic response pathways mediate many of the rapid actions of steroid hormones, but the mechanisms underlying such responses remain controversial. In some cases, cell-surface expression of classical nuclear steroid receptors has been suggested to mediate these effects, but, in a few instances, specific G-protein-coupled receptors (GPCRs) have been reported to be responsible. Here, we describe the activation of a novel, neuronally expressed Drosophila GPCR by the insect ecdysteroids ecdysone (E) and 20-hydroxyecdysone (20E). This is the first report of an identified insect GPCR interacting with steroids. The Drosophila melanogaster dopamine/ecdysteroid receptor (DmDopEcR) shows sequence homology with vertebrate β-adrenergic receptors and is activated by dopamine (DA) to increase cAMP levels and to activate the phosphoinositide 3-kinase pathway. Conversely, E and 20E show high affinity for the receptor in binding studies and can inhibit the effects of DA, as well as coupling the receptor to a rapid activation of the mitogen-activated protein kinase pathway. The receptor may thus represent the Drosophila homolog of the vertebrate “γ-adrenergic receptors,” which are responsible for the modulation of various activities in brain, blood vessels, and pancreas. Thus, DmDopEcR can function as a cell-surface GPCR that may be responsible for some of the rapid, nongenomic actions of ecdysteroids, during both development and signaling in the mature adult nervous system.

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Crossref · 10.1523/jneurosci.1005-05.2005

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Authors
Srivastava, D. P., Yu, E. J., Kennedy, K., Chatwin, H., Reale, V., Hamon, M., Smith, T., & Evans, P. D.
Affiliations
  • Babraham Institute (GB)
  • Northwestern University (US)
Venue
The Journal of Neuroscience
Published
2005-06-29
Volume
25
Issue
26
Pages
6145-6155
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2023092335
Cited by
272
References
114
Citations by year
2026: 4 · 2025: 27 · 2024: 24 · 2023: 7 · 2022: 4 · 2021: 13 · 2020: 15 · 2019: 11 · 2018: 13 · 2017: 10 · 2016: 16 · 2015: 9 · 2014: 15 · 2013: 19 · 2012: 15
FWCI
4.79
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • Directorate for Biological Sciences
  • Biotechnology and Biological Sciences Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
non-genomic steroid action, ecdysteroids, ecdysone, 20-hydroxyecdysone, G protein-coupled receptors, dopamine, catecholamines, cAMP signaling, phosphatidylinositol 3-kinase, mitogen-activated protein kinase, Drosophila melanogaster, neuronal receptors
MeSH terms
Animals, Catecholamines, Drosophila melanogaster, Female, Cricetinae, Oocytes, Transfection, Xenopus laevis, Restriction Mapping, Polymerase Chain Reaction, CHO Cells, DNA Primers, DNA, Complementary, Reverse Transcriptase Polymerase Chain Reaction, Drosophila Proteins, Receptors, G-Protein-Coupled

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