RRC ID 11650
Author Carlsson MA, Diesner M, Schachtner J, Nässel DR.
Title Multiple neuropeptides in the Drosophila antennal lobe suggest complex modulatory circuits.
Journal J. Comp. Neurol.
Abstract The fruitfly, Drosophila, is dependent on its olfactory sense in food search and reproduction. Processing of odorant information takes place in the antennal lobes, the primary olfactory center in the insect brain. Besides classical neurotransmitters, earlier studies have indicated the presence of a few neuropeptides in the olfactory system. In the present study we made an extensive analysis of the expression of neuropeptides in the Drosophila antennal lobes by direct profiling using matrix-assisted laser desorption/ionization-time-of-flight (MALDI-TOF) mass spectrometry and immunocytochemistry. Neuropeptides from seven different precursor genes were unambiguously identified and their localization in neurons was subsequently revealed by immunocytochemistry. These were short neuropeptide F, tachykinin related peptide, allatostatin A, myoinhibitory peptide, SIFamide, IPNamide, and myosuppressin. The neuropeptides were expressed in subsets of olfactory sensory cells and different populations of local interneurons and extrinsic (centrifugal) neurons. In some neuron types neuropeptides were colocalized with classical neurotransmitters. Our findings suggest a huge complexity in peptidergic signaling in different circuits of the antennal lobe.
Volume 518(16)
Pages 3359-80
Published 2010-8-15
DOI 10.1002/cne.22405
PMID 20575072
MeSH Amino Acid Sequence Animals Brain / anatomy & histology Brain / metabolism Drosophila Proteins / chemistry* Drosophila Proteins / genetics Drosophila Proteins / metabolism* Drosophila melanogaster / anatomy & histology* Drosophila melanogaster / metabolism Female Hormone Antagonists / metabolism Interneurons / cytology Interneurons / metabolism Male Molecular Sequence Data Neuropeptides / chemistry* Neuropeptides / genetics Neuropeptides / metabolism* Olfactory Pathways / anatomy & histology Olfactory Pathways / physiology Olfactory Receptor Neurons / cytology Olfactory Receptor Neurons / metabolism Signal Transduction / physiology Smell / physiology Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
IF 3.4
Times Cited 68
Drosophila snpf-Gal4 (NP6301 DGRC#105193 or DGRC#113901)