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@ARTICLE{Sugie:139158,
author = {Sugie, Atsushi and Möhl, Christoph and Hakeda-Suzuki,
Satoko and Matsui, Hideaki and Suzuki, Takashi and
Tavosanis, Gaia},
title = {{A}nalyzing {S}ynaptic {M}odulation of {D}rosophila
melanogaster {P}hotoreceptors after {E}xposure to
{P}rolonged {L}ight.},
journal = {JoVE journal},
volume = {Neuroscience},
number = {120},
issn = {1940-087X},
address = {New Delhi},
publisher = {JoVE124831},
reportid = {DZNE-2020-05480},
pages = {55176},
year = {2017},
abstract = {The nervous system has the remarkable ability to adapt and
respond to various stimuli. This neural adjustment is
largely achieved through plasticity at the synaptic level.
The Active Zone (AZ) is the region at the presynaptic
membrane that mediates neurotransmitter release and is
composed of a dense collection of scaffold proteins. AZs of
Drosophila melanogaster (Drosophila) photoreceptors undergo
molecular remodeling after prolonged exposure to natural
ambient light. Thus the level of neuronal activity can
rearrange the molecular composition of the AZ and contribute
to the regulation of the functional output. Starting from
the light exposure set-up preparation to the
immunohistochemistry, this protocol details how to quantify
the number, the spatial distribution, and the delocalization
level of synaptic molecules at AZs in Drosophila
photoreceptors. Using image analysis software, clusters of
the GFP-fused AZ component Bruchpilot were identified for
each R8 photoreceptor (R8) axon terminal. Detected
Bruchpilot spots were automatically assigned to individual
R8 axons. To calculate the distribution of spot frequency
along the axon, we implemented a customized software plugin.
Each axon's start-point and end-point were manually defined
and the position of each Bruchpilot spot was projected onto
the connecting line between start and end-point. Besides the
number of Bruchpilot clusters, we also quantified the
delocalization level of Bruchpilot-GFP within the clusters.
These measurements reflect in detail the spatially resolved
synaptic dynamics in a single neuron under different
environmental conditions to stimuli.},
keywords = {Animals / Drosophila Proteins: metabolism / Drosophila
melanogaster: metabolism / Green Fluorescent Proteins:
metabolism / Light / Luminescent Agents: metabolism /
Photoreceptor Cells, Invertebrate: metabolism /
Photoreceptor Cells, Invertebrate: radiation effects /
Presynaptic Terminals / Protein Binding / Protein Transport
/ Synapses: metabolism / Synaptic Transmission: physiology /
Drosophila Proteins (NLM Chemicals) / Luminescent Agents
(NLM Chemicals) / Green Fluorescent Proteins (NLM
Chemicals)},
cin = {AG Tavosanis / IDAF},
ddc = {570},
cid = {I:(DE-2719)1013018 / I:(DE-2719)1040200},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28287587},
pmc = {pmc:PMC5408834},
doi = {10.3791/55176},
url = {https://pub.dzne.de/record/139158},
}