Reference Report

Reference
Citation	Sigrist, S.J., Thiel, P.R., Reiff, D.F., Lachance, P.E.D., Lasko, P., Schuster, C.M. (2000). Postsynaptic translation affects the efficacy and morphology of neuromuscular junctions. Nature 405(6790): 1062--1065. (Export to RIS)
FlyBase ID	FBrf0128816
Publication Type	Research paper
PubMed ID	10890448
PubMed Abstract	Long-term synaptic plasticity may be associated with structural rearrangements within the neuronal circuitry. Although the molecular mechanisms governing such activity-controlled morphological alterations are mostly elusive, polysomal accumulations at the base of developing dendritic spines and the activity-induced synthesis of synaptic components suggest that localized translation is involved during synaptic plasticity. Here we show that large aggregates of translational components as well as messenger RNA of the postsynaptic glutamate receptor subunit DGluR-IIA are localized within subsynaptic compartments of larval neuromuscular junctions of Drosophila melanogaster. Genetic models of junctional plasticity and genetic manipulations using the translation initiation factors eIF4E and poly(A)-binding protein showed an increased occurrence of subsynaptic translation aggregates. This was associated with a significant increase in the postsynaptic DGluR-IIA protein levels and a reduction in the junctional expression of the cell-adhesion molecule Fasciclin II. In addition, the efficacy of junctional neurotransmission and the size of larval neuromuscular junctions were significantly increased. Our results therefore provide evidence for a postsynaptic translational control of long-term junctional plasticity.
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Language of Publication	English
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Publication Type	Journal
Abbreviation	Nature
Title	Nature
Publication Year	1869-
ISBN/ISSN	0028-0836
Data from Reference
Aberrations (2)
	Df(2L)cl-h4 Df(2R)Pcl7B
Alleles (15)
	dnc^unspecified eag^unspecified eIF-4E^Scer\UAS.cRa GluRIIA^g9 M(2)53¹ M(2)58F^unspecified pAbp^EP310 pAbp^k10109 pAbp^Scer\UAS.cSa RpL27A¹ RpS26^unspecified Scer\GAL4^elav.PLu Scer\GAL4^Mhc.PW Sh^unspecified w^+mC
Constructs (4)
	P{GAL4-elav.L} P{GAL4-Mhc.W} P{UAS-eIF-4E.R} P{UAS-pAbp.S}
Genes (15)
	dnc eag eIF-4E Fas2 GluRIIA M(2)53 M(2)58F Mhc pAbp RpL27A RpS26 Scer\GAL4 Sh Syt1 w
Insertions (2)
	P{EP}pAbp^EP310 P{lacW}pAbp^k10109